Since government water quality standards were required, water is nothing like your ancestors experienced. Still, there are improvements that can be made. Using data and technology, wastewater treatment engineers continue to make strides to ensure that people throughout the world have clean, safe water.

A Brief History of Water Treatment Practices

Civilizations like Ancient Greece, Ancient Egypt, and Mesopotamia all strived to dispose of human waste to keep water sources clean. In the United States, Hans Christopher Christiansen helped launch the nation’s first public water department in Pennsylvania in 1755.

Baltimore, Maryland, and Boston, Massachusetts, were the first two cities to create municipal water treatment plants. Diseases like cholera were running rampant. These did not come into fruition until the mid-1800s. It wasn’t until the 1910s that chlorine was used to sanitize water. World War II led to new discoveries on treating water to make it clean and safe.

Surprisingly, despite the advancements, the U.S. government did not pass the Safe Drinking Water Act until 1974. At this point, tests were used to make sure the levels of certain contaminants were monitored and maintained.

Understanding How Wastewater is Processed

Wastewater is the water that travels through sewers or is trucked in after septic tank cleanings. It comes from washing machines, dishwashers, sinks, bathtubs, showers, and toilets. In a sewer, it also contains water that drains from streets on a rainy day or when the snow melts.

Wastewater contains everything from soap and cleaners to food scraps and human waste. It can be the water that comes from an industrial setting like a paper mill or manufacturing plant. For this water to be reused or returned to lakes and streams, it needs to be filtered and cleaned.

Cleaning wastewater requires multiple steps. First, the solids need to be filtered out. The remaining water, known as effluent, continues going through smaller and smaller screens that keep filtering the grit. That grit is disposed of in landfills and other facilities that can process it.

Aeration adds oxygen that can help break down gases and assist materials in the effluent as they decompose. This secondary step continues to help get rid of grit and other materials.

The third step is to help separate the sludge and scum from the wastewater. Sludge settles at the bottom is moved to digesters. Scum, such as oils and plastic materials, float to the top of the tank where mechanical rakes remove them.

Filtration is a fourth step that helps remove bacteria by running the wastewater through sand or carbon filters. In addition to removing bacteria from the water, iron is also removed.

In the final step, the filtered water is moved to tanks where chlorine helps kill off any remaining bacteria. As the chlorine destroys remaining bacteria, it also breaks down leaving minute traces of the chemical. At this point, it’s ready to enter rivers and become part of a natural water source again.

How Do Data and Technology Help?

Computers have become an important component in wastewater treatment. Not only do they help with research and data, but they also run the CAD software that can help design the right system for your needs. Once the blueprints are in place, you’ll be able to pick the equipment you need. Field engineers have the training and hands-on experience to make sure installations of entire systems go smoothly. If there are hiccups, the engineers are on-hand to figure out and implement a solution.

The EPA maintains the Industrial Wastewater Treatment Technology Database to make it easy to find Clean Water Act rules and guidelines. This resource helps make it easy to research the latest advancements, which can help companies hone their wastewater practices. You can search by topic, industry, pollutant, technology, or download the entire database.

Technology alone has led to many advancements in productivity and operational costs. Wastewater treatment systems of the past relied on humans to manage many of the controls and processes. While today’s computers can adjust the flow rate of wastewater and clean screens, humans once had to carefully monitor and manage those aspects.

Motorized rake systems remove oils, plastics, and other trash now, but humans used to have to rake these materials out. Screens are cleaned automatically. Computers can take readings, store them for management to use, and this makes it easier to manage overall costs and expenses.

Lakeside Equipment has been helping with wastewater treatment since 1928. Engineers and other wastewater specialists work with companies to create effective water treatment systems. The company can keep operating costs down and ease maintenance and repair requirements. Complete the online form to talk to a customer service representative.

Clarification is a key step in cleaning wastewater. Primary clarification helps remove solids like FOG, scum, and sludge. Secondary clarification starts to remove some of the germs, microbes, and small particles. Before your industrial wastewater heads to the sewers, you must add a wastewater clarifier. What are the benefits?

Stay in Compliance With Local, State, and Federal Regulations

Have you looked at your local, state, and federal regulations? You may be legally required to install a wastewater clarifier. 

The federal government has many restrictions on wastewater treatment in categories like battery manufacturing, the dairy industry, medical offices/hospitals, meat and poultry processing plants, paper/pulp mills, seafood processing plants, and dozens of others. If you’re one of those industries, industrial wastewater treatment is required.

States may have their own regulations. Some regions of Massachusetts set stricter rules than the EPA has for the reuse of biosolids from wastewater treatment. You can’t always follow federal government rules and still be doing everything correctly. You need to check with your local wastewater district to find out what state rules apply to you.

Finally, you might find the city or district you’re in requires it, too. In Carson City, Nevada, industries like commercial laundromats, food producers/restaurants, hotels with dining facilities, mortuaries, and wholesale bakeries have to reduce the biochemical oxygen demand (BOD) and suspended solids they send to a wastewater treatment plant. If they don’t meet the local requirements, they can pay huge fines.

Help Protect the Environment

July brought flooding rains to some areas of Vermont, and several wastewater treatment plants were either destroyed or had to reduce operations and release raw sewage directly to the rivers their facilities connect to. 

If you’re clarifying wastewater before it leaves your industrial facility, you help protect the environment. It can be tremendously beneficial to the community and bodies of water in the area if the water reaching the facility is already pretreated. You do a lot to help protect the environment in case of raw sewage releases.

Create Less Hassle Within Your District

People are going to be upset if they find they’re paying higher rates for a system that’s being overwhelmed by industrial wastewater. When you add clarifying equipment and treat the wastewater leaving your facility, you’re less likely to frustrate and even anger people in your wastewater district or the workers at the local treatment plant.

You’re not overwhelming the system and creating a strain on equipment that’s getting older. This is a win-win situation for everyone.

Heighten Worker Safety

Depending on your industrial facility, you could be releasing some hazardous liquids that can impact your wastewater treatment plant’s workers. If you have a meat processing facility, your wastewater likely contains high levels of E. coli, salmonella, or other foodborne illnesses. The workers are at a higher risk. When you clarify your industrial wastewater first, you take the initial step to help keep them safe.

Reduce Your Potential Costs

When you treat wastewater before releasing it to a sewer or body of water, you could be charged steep fines if there are any contaminants in that water. A California company was fined almost $5 million for releasing untreated wastewater into a public wastewater treatment plant without being permitted to do so. They were releasing almost 250,000 gallons taking up almost 40% of the wastewater treatment plant’s capacity.

If you’re not approved to release wastewater to the local facility and aren’t meeting regulations regarding clarification or pre-treatment, you could end up paying millions of dollars, which could bankrupt you.

Improve Your Company or Brand’s Image

Your brand’s image can take a hit if you’re not clarifying your industrial wastewater. Bad press can destroy a business’s reputation. While adding an industrial wastewater system does cost money, it can pay off when it comes to how the public feels about your business.

As an example, breweries often send a lot of wastewater to local wastewater treatment plants every day. Organic materials and grains that are in a brewery’s wastewater are hard to treat. When an abundance of brewery wastewater comes in and needs extra time to treat, it takes up room from others in the municipality. It becomes frustrating to area residents and wastewater treatment plant operators

When a brewery looks for grants and other financing options to add its own clarification equipment, it can do a lot for its reputation. Plus, the grains that are filtered out can become feed for cattle and livestock and the organic matter can be used as fertilizer. 

Factors to Consider When Choosing a Wastewater Clarifier

Before you invest in an industrial wastewater clarifier, make sure you purchase the best wastewater treatment equipment for your needs. Your budget will play a major role in what you eventually purchase, but there are several other things to keep in mind.

The Different Types of Clarifiers

There are different types of clarifiers. With some, the wastewater enters on the side at the top and travels downward with a whirlpool type of flow. Others enter the center. It helps to learn a little more about these popular options to understand what they can do and how they work.

Spiraflo:

Wastewater comes into the outer perimeter of the clarifier tank at the top and travels along a raceway that’s positioned between the outer wall and skirt. Water spirals down the skirt to the main area where settling occurs. Suspended solids are then caught in a sludge blanket for removal through the central hopper.

A peripheral-feed spiral clarifier like the Spiraflo often performs up to 4x better than a center-feed clarifier.

Spiravac:

Like the Spiraflo, the Spiravac has wastewater entering from a pipe at the top of the raceway and spiraling down to the settling area at the bottom. Sludge is then removed through Controlled Removal using separate sludge removal pipes that lead to a sludge well or Direct Removal using a header pipe that uses a rotating manifold to discharge the sludge.

In addition to those two popular wastewater clarifiers, full surface skimming is also recommended. There are full-surface ducking skimmers that cost less and have hinges that allow the skimmer to fit under a scum trough. A motorized full-surface skimmer has a drive that rotates the skimmer arm and a blade that pushes floating scum and FOG to a trough for removal.

Your Facility’s Available Space

How much space is available? If you don’t have a lot of space, you need to find a clarifier that takes up as little space as possible. A Spiraflo ranges in size from 8 feet in diameter to 130 feet, so it’s a good option if you need to stick within a certain amount of space.

The Maintenance Requirements

Finally, look for a clarifier that requires little maintenance. If you choose a system that has a lot of steps to keep it maintained, hire additional staff to ensure you have a team available for routine maintenance. 

Work With a Water Treatment Professional 

An industrial wastewater clarifier is a valuable asset for any facility, and it’s one you shouldn’t rush into purchasing without research and expert knowledge. You need a system that helps you save money, stay in compliance, keep people in your municipality happy, and reduce the strain on your area’s wastewater treatment plant. 

Ensure you get exactly what your plant needs by working with a water treatment expert. The team at Lakeside Equipment is highly knowledgeable in all aspects of water treatment, including clarifiers. Talk to our team to discuss your facility’s goals, the space you have, and your budget. We’ll help you find the best clarifier for industrial wastewater.

Hauled waste, according to the Environmental Protection Agency (EPA), is waste that is comprised of sewage, domestic waste, non-domestic waste, or a combination of both types of waste. Some types of waste are toilet waste and domestic septage, ground water, sand or grease traps, restaurant grease, wastewater from drilling processes, and pass through from landfills. Hauled waste is generally transported by a hauler system which is discharged to a public facility, often known as a Publicly Owned Treatment Works.

Depending on where you live, your home is likely connected to either the city’s sanitary sewer collection system, or you may have an in-home septic system. A septic system is a highly efficient, self-contained, underground wastewater treatment system. The tank is a water-tight box that is connected to a pipe which connects to the public sewer system. Within the tank, solids are separated from wastewater, and the wastewater is what flows into the pipe that is connected to a drainfield of pipes that flow to the public system.

On the receiving end, the waste is received by a hauled waste system. This system works by removing debris and inorganic solids from all of the forms of waste, such as the domestic waste, restaurant grease, residual landfill solids, and other waste. A machine, which is the primary component of the hauled waste system is a piece of equipment that handles the waste with its screens which filter the waste. Some of the machines have cylinders with rotating screens, and various other mechanical functions that work to ensure that grease, grit and small debris don’t plug everything up. In some cases, a separate, additional grease trap might be connected to the main machine for added support. As a part of the process, the waste that is screened is essentially compacted, dewatered and reduced to a cleaner solid.

One problem that often occurs with hauled waste systems is that the waste is more concentrated and therefore is not equally distributed; this can cause several septage and maintenance problems. With a higher concentration, the screening process becomes more tedious, which reduces overall efficiency and has the likelihood to slow down operations. For these reasons, it is necessary to have a hauled waste system that is able to control for large amounts of waste for maximum functioning. Having a fully automated machine that has the capability to screen and filter large amounts of waste without being overburdened allows the waste to be unloaded more rapidly. The waste gets unloaded into a septic acceptance plant or waste hauler.

During the process of hauled waste removal there is a potential for contamination. Contamination may occur due to hazardous waste materials that Publicly Owned Treatment Works come into contact with, and this is certainly something to consider. To avoid contamination, maintenance or facility issues and any other adverse effects, a system that is designed to handle heavy solid loads and high grease concentrations, for example, is required. This can be obtained by using a high quality water treatment system. Of course, following the appropriate safety guidelines are compulsory.

The Environmental Protection Agency suggests these specific controls regarding the discharge of waste.

• applying limits to non-domestic hauled waste,
• issuing permits to waste haulers,
• implementing tracking systems,
• sampling loads, and
• refusing all hauled waste.

As mentioned before, a high quality water treatment system is necessary. Not only does it take into account the above suggestions, but also offers these components and advantages:

• Compact design with screening and grit removal in one unit
• Security control station allows access for authorized haulers
• All stainless steel construction resists corrosion
• Available for indoor or outdoor environments
• Multiple sized units to suit your application
• Unload up to two (2) waste haulers at the same time

At Lakeside Equipment Corporation, we have considered how to manage a maximum efficiency water treatment system. We are proud not only of the individual components of our hauled waste systems, but of the full service we provide with it. Lakeside Equipment Corporation has customer specific designs to meet your unique needs, the latest in CAD-based engineering designs, experienced field service engineers to help with on-site installations, locally authorized service personnel to contact on a daily basis, and parts and inventory ready to ship when you need it. We also offer an option for dual inlets to allow two haulers to unload at the same time. Keep in mind that a pre-engineered design reduces engineering costs. Our integrated designs allow haulers to unload faster than any haulers on the market — again, creating maximum efficiency. Contact us today so we can assist with your waste removal needs!

Biological wastewater treatment is a process where bacteria break down the organic substances in wastewater. Wastewater typically contains food particles, toilet paper, solids, and even pharmaceuticals, pathogens, toxins like cleaning products, and heavy metals.

All of these have to be cleaned from the wastewater before it is clean enough to be released to nearby lakes, rivers, or ponds. It’s an essential part of any wastewater treatment program. Whether you own a wastewater treatment plant or have a plant or industrial facility that produces a lot of wastewater each day, you need a biological treatment system that helps clean wastewater.

How Does Biological Wastewater Treatment Work?

The wastewater that comes into a treatment plant is contaminated with many things. You have urine, feces, water from showers, dishwashers, washing machines, and baths. Water coming in from a sewer may have wastewater from factories, car washes, industrial laundromats, and public toilets. It has to be cleaned properly before it is released back into your community’s lakes, rivers, ponds, etc.

To do this, water flows or is pumped into a septage acceptance plant and goes through screens into clarifying tanks where solids sink to the bottom and are removed using pumps. Floating items like fats, oils, and grease float to the surface and are removed. Trash rakes work with the screens to clear out larger items like plastics, rags, and flushable wipes, which really should never be flushed as they do not break down as you’d expect.

While you may have removed a lot of material and sludge from the wastewater, there are still many contaminants in the wastewater. It will go into an aeration tank where it is pumped full of small oxygen bubbles. This oxygen is important as it’s part of a biological aerobic treatment process.

With this, oxygen feeds the bacteria, which gets them energized to start feeding on the pollutants. That breaks down pollutants and converts them into phosphate, nitrate, and carbon dioxide. The wastewater settles again, and any remaining sludge is removed. This process continues with bacteria helping remove pollutants 

Aerobic treatments are faster than the anaerobic process that skips the use of oxygen. With this process, biogas is produced, which can affect the environment. Because of this, aeration is often preferred as it’s fast, efficient, and effective. 

If you need a cost-effective option for biological treatment using aeration, a Sequencing Batch Reactor has a small footprint and can be expanded if that’s needed in the future. It has a continuous feed system that repeats the aeration, settling, and decanting phases in a reactor basin. It’s a five-phase operation:

• Mix Fill – The valve opens to allow raw wastewater into the tank as the mixer turns on, but aeration is turned off.
• React Fill – Aeration turns on and off as phosphorus, nitrogen, Chemical Oxygen Demand (COD), and Biological Oxygen Demand (BOD), are processed or treated. 
• React – The valve allowing raw wastewater into the tank shuts off the flow. Aeration and mixing continue to completely treat the wastewater for the final stages before release.
• Settle – Aeration and mixing stop to allow any solids to sink to the bottom or rise to the top. 
• Sludge Removal – Sludge and scum are removed from the system and the clear water is released or decanted. 

What Are Biological Wastewater Treatment’s Benefits?

Biological wastewater treatment is an essential part of a wastewater treatment plant. It’s what keeps pollution out of rivers, lakes, and oceans. It also helps conserve water in some regions as treated water goes into tanks where it’s drawn into the water treatment facility for additional disinfection to make it safe for the community members to drink, cook with, and shower in.

Facilities that use a lot of water can also benefit from biological wastewater treatment processes. If you own a facility like a meat processing plant, the strain you put on a local wastewater treatment district is tremendous. You can improve your company’s reputation by taking extra steps to lower the strain you’re putting on your district’s facilities.

With industrial wastewater facilities that handle biological treatments before releasing your wastewater to the sewers, you help out. You lower the work required to treat the wastewater you’re releasing, which reduces your district’s operating costs.

Wastewater treatment districts that use biological treatment processes find it easier to comply with federal and state regulations. Businesses that pre-treat wastewater help keep districts in compliance. 

People also benefit. With an increased number of industrial wastewater facilities at different factories and plants, it creates jobs for people in your community.

It creates cleaner water that’s going into lakes, rivers, and oceans. If you live in an area where you spend time in the water, you want the assurance that you’re swimming or boating in clean water and not being exposed to contaminants. You don’t want to eat fish that are a potential health risk because they’ve ingested too many pharmaceuticals or toxins.

Studies have found that fish that are exposed to water with high levels of birth control medications are impacted. They don’t lay as many eggs, which can deplete the availability of seafood. Biological wastewater treatment is an important step in protecting waterways.

What Types of Biological Wastewater Treatment Systems Are Popular Today?

As mentioned earlier, aerobic is quicker as you add oxygen into the process. But, anaerobic is best when you want to convert your organic materials into methane, carbon dioxide, and biomass. A third option, Anoxic, requires the use of nitrates, nitrites, selenite, or sulfate to feed the bacteria.

Activated sludge is the most commonly used biological wastewater treatment method and it’s been around for over a century. It’s an aerobic wastewater treatment technology. It’s going to be the first choice in many districts.

Ultimately, the decision is yours, but it’s a conversation you should have with an expert in wastewater treatment. You need to make sure whatever changes you make remain in compliance with federal and state regulations.

If your wastewater treatment facility isn’t using biological wastewater treatment processes, it’s time. Lakeside Equipment can help guide you into the best processes to add to your current system. Our wastewater experts advise you on the cost of biological wastewater treatment to ensure any additions fit your district’s budget. We’ll help you make sure you are following regulatory requirements. 

Lakeside Equipment has been helping clean water around the world for close to a century. Our team has the solutions you need at a budget you can afford. Reach us online or by phone to talk about your facility’s needs and what improvements will help make wastewater treatment processes efficient and effective.

Your business and the machines within it are only as good as the people who work alongside them. That’s why when you’re looking to invest in a project that requires an industrial screw pump and a partnership with its manufacturers, you want to ensure that you’re working with a company whose goals align with yours. A screw pump made by a reliable and trustworthy company will make your project easier from start to finish and beyond.  All you need to know is precisely what you’re looking for in a partner company and how to find it. Don’t be intimidated by the specificity of your need for a screw pump! No matter what the need, a potential business partner is a potential business partner, and partners of all stripes deserve the same basic research and respect.

Performing a Needs Assessment

Before you start choosing which industrial screw pump manufacturer you want to work with, you’ll need to perform a needs assessment in order to better understand what you’ll require of a partner and of your screw pump. Consider, of course, the screw pump’s function. Industrial screw pumps are used to move large amounts of water and other liquids from one area to another, thereby making it simpler for debris and the like to pass more easily through the system with which it is affiliated. The screw pump, then, prevents damage to the delicate parts by effectively separating reusable fluid from any solids that may have been included in the mix, be that inclusion intentional or otherwise.

Screw pumps are most frequently affiliated with water treatment plants, but they can also be used on a day to day basis in more engineering-oriented as well. As such, look for a manufacturer who specializes in the applications which most closely apply to your needs.

Location, Location, Location

While the modern age of technology has made it simpler to work with companies all over the world, you may still, when looking for a screw pump manufacturer, want to work with a company based a little closer to home. The installation of a screw pump inside your plant or business will require the attention and effort of dozens of outside employees, and if you’re working with a manufacturer who is located nearby or at a minimum offers service in your area, you’ll be able to meet these employees beforehand to ensure it is a good match.

If you’re feeling braver and find a manufacturer whose goals align with your own, even though they’re located a significant distance away, do what you can to try and meet with critical implementation team members in person. You’ll want to do what you can to treat your new screw pump partner like any other business partner. Communication and time spent face to face is key.

Reliability

It’s important to consider the reputation of your new partner alongside their location. If you find that local manufacturers are nearby but less than stellar in their work or product offerings, it’s natural that you may want to broaden your range. When searching for potential screw pump manufacturers don’t be afraid to ask a company representative about the previous projects they’ve worked on. Experience and reputation go hand in hand, and it’s especially important that your new partner makes good on both.

Communication

Having touched on communication already as a part of a partner’s location, it makes sense that the ability to frequently get in touch with a potential manufacturer would be important. There’s more to communication than that, though. When asking yourself, “What should I look for in a screw pump manufacturer,” you’ll want to ensure that you consider your potential partner’s ability to stay in touch with you. This means that an ideal screw pump manufacturer would not only get in touch while your screw pump was being installed, but that they would remain accessible after installation and offer on-going support and maintenance when needed.

Expected Schedule

Speaking of expectations: you’ll naturally want to have developed a schedule for yourself and your company by the time you start looking for a screw pump manufacturer to partner with. In your first meetings with a potential partner, it’s important to ensure that your workable schedules align. You will  want to consider the time it’ll take your potential partner to meet your needs for a screw pump. Outside of this, however, it’s important that your expectations of your partner’s ability to work and keep to a deadline are reasonable, and that their expectations of you are equally based in reality.

Estimated Price

Most importantly is your budget. When you start looking for a screw pump manufacturer to partner with, you’ll want a range of prices in mind so you can both pay your partner fairly and negotiate costs so that you remain in the black. Do your research. Find the screw pump manufacturers who work within your desired range and reach out to them to gather quotes regarding how expensive a partnership between the two of you may be.  Like all business partnerships, while price is important, make sure you are comparing apples to apples.  Experience and reputation often come at a premium.

Though their purpose may be complex, screw pump manufacturers are like any other manufacturer or business partner who you might start a partnership with. Make sure that your goals align, that your schedules remain flexible, and that you communicate with one another, and you’re likely to have the screw pump you need with little to no hassle!

Wastewater treatment plants in the U.S. treat around 238 billion gallons of wastewater each week. In addition, about 20% of U.S. homes and businesses are on septic systems that have underground tanks and piping that work with the sand and bedrock to filter wastewater and capture solids in the tank to be pumped out every year or two. Any wastewater has an abundance of phosphorus and nitrogen from household cleaners, personal care products, and human waste. That’s a problem.

Nitrogen and phosphorus damage water ecosystems as they cause algae blooms and pollution that harms fish and other aquatic creatures. Plus, water that contains toxic blue-green algae is fatal to pets. To protect people and animals from contaminated water, wastewater treatment plants must comply with regulatory standards.

What Regulations Are There?

Water treatment regulations exist on federal, state, and city/town levels. It’s impossible to know exactly what the regulations that apply to you are going to be as it comes down to your municipality and the percentage of homes, businesses, industries, and type of sewer system. When it comes to the federal government’s regulations, you’re looking at these two areas.

The Clean Water Act (CWA):

The CWA includes federal regulations that wastewater treatment plants must meet. When they apply for a permit to operate, the EPA sets the limits that the plant must adhere to. If those levels are not met, the wastewater treatment plant must alert the EPA and face fines if the problem could have been avoided. Sudden floods are often harder to avoid, but planning in advance for record-breaking rainfall and storms is beneficial.

The regulations in the CWA are designed to get pollutants out of the water before it’s released into a lake, river, or ocean. Nitrogen and phosphorus are just two of the things that are treated. Wastewater also needs to have pollutants like cadmium, cyanide, lead, nickel, silver, etc. removed to the required levels. 

Different districts will experience different contaminants, and that’s why the EPA will set limits. A city that has an abundance of paper mills or meat processing plants will have different pollutants to one that only has banks, houses, and office buildings. To help with this, some wastewater treatment plants require industrial plants in their municipality to add their own industrial wastewater treatment plants for pre-treatment.

A city that has an abundance of restaurants will deal with more fats, oil, and grease (FOG) than one that is more industrial or residential. FOG is notorious for solidifying in sewers and pipes and merging with tissue paper and plastic wrappers, which creates costly blockages. For that reason, some wastewater treatment districts also require restaurants and food service industries to have grease traps installed in their kitchens.

Does your district also accept hauled septage? If so, you’re going to be getting trucks full of wastewater from septic tanks at homes and businesses. As a septic tank has pipes that release wastewater to the leach field, and solids and FOG remain in the tank, hauled septage will have a higher percentage of solids.

One more thing that is considered when issuing wastewater permits and regulations is what type of sewer system it is. A separate sanitary sewer only has wastewater from homes and businesses. Combined sewers combine a sanitary sewer with stormwater runoff. As they have to deal with an influx of water during a storm or when snow melts, these systems may experience more flooding than a separate system.

The Safe Drinking Water Act (SDWA):

Some wastewater treatment plants send their water back to a water treatment plant for a sustainable water system. It lowers the amount of water that’s drawn from lakes or rivers, which is essential in areas where droughts are common. For water treatment plants, regulations set forth by the SDWA come into play.

The SDWA requires water treatment plants to get arsenic, asbestos, lead, mercury, and microbials out of the district’s drinking water. The list of microbes is long and includes things like E. coli, giardia, and legionella. Treatment processes must target these and other regulated contaminants that states, cities, and towns may add. 

Water treatment often uses chemicals like chlorine to kill bacteria and parasites. That chlorine also must be filtered to get it to safe levels. Many districts must add fluoride for oral health, but it has to be at the right levels so water treatment workers have to test and ensure water is safe before it’s released to the public water system.

How Do You Make Sure You’re in Compliance?

A wastewater district manager needs to make sure regulations are followed, otherwise, fines and penalties are possible. This can be tougher than originally thought as weather patterns change and a flood can be devastating and lead to a sudden release of raw sewage. Proper measures are needed to prevent this. Use these tips to stay in compliance.

Analyze Flow Rates

Analyze the flow rates throughout the day. You’re going to have fluctuations throughout the day. Incoming wastewater may be worse in the morning when people are showering for work or school, but much slower throughout the day. After 5 p.m. when people come back home and cook dinner, rates increase again. 

As you learn when more wastewater comes in, make sure pumps and equipment keep up with those rates. You can do this manually, but it’s better to have an automated pump that adjusts for changes in flow rates. This is ideal during storms when there may be higher flow rates than usual because of rainfall coming in from stormwater drains.

Consider the Wastewater

What are you more likely to have coming in? If you are in a district with a combined sewer, dirt and gravel are going to come in whenever it rains and drains into the stormwater system. Gravel, dirt, and sand wear out components quickly, but a grit collection system continually washes and separates grit to protect your equipment. 

Embrace Technology

Technology is helpful when it comes to staying up-to-date on wastewater regulations. As the EPA adds new contaminants to the list, you need to quickly address those items within your treatment process. With advanced technology helping out, you’re in a good place to adapt to changes.

Add a SharpBNR system to continually monitor your wastewater treatment equipment and processes and adjust them automatically if anything is off. Before a catastrophe occurs, you’ll get the alert and can get to the plant to check on things. 

What’s Your Budget? 

Finally, you do have to keep your budget in mind. While government grants to improve the nation’s infrastructure are available, they may not cover everything. Sometimes, a low-interest loan is needed to make improvements within your wastewater treatment plant. 

Work with an expert in wastewater treatment to find the best improvements for the budget you have. Lakeside Equipment has been in business since 1928 and is ready to help you meet your wastewater treatment regulations and be prepared for future changes. Our team of engineers and plant operators have the expertise you need to run an effective, efficient plant.

According to the Environmental Protection Agency (EPA), wastewater treatment is one of the most common forms of pollution control in the U.S. Lakeside Equipment Corporation is proud to supply equipment and systems that are used across the country at wastewater treatment plants, which are facilities that clean wastewater before discharging it back into the environment.

The Need For Wastewater Treatment Plants: Then and Now

Wastewater treatment plants were not always necessary. In the past, bacteria and other organisms found in waterways would break down sewage into harmless byproducts in a naturally occurring purification process. But, the bacteria and other organisms could not keep up with the increase in population and production of sewage. Wastewater is now sent to wastewater treatment plants—many of which use the same purification process found in nature to clean water.

Most wastewater treatment plants prepare wastewater for reuse in two separate stages: the primary and secondary stage.

The Primary Stage of Wastewater Treatment

Sewage enters the primary stage of treatment as soon as it arrives at a wastewater treatment facility. First, it is sent through a screen that is designed to remove large pieces of debris that could damage Lakeside equipment used elsewhere in the facility. Some facilities have multiple screens in place to remove objects and materials of different sizes from the sewage.

After passing through the screen, the sewage water moves into the grit chamber. Grit can include sand, gravel, eggshells, or any other type of solid material that makes it through the screening process. There are several different types of grit chambers, but Lakeside’s aerated grit chamber is among the most popular. The wastewater flows in a spiral pattern inside this chamber. Air is slowly introduced into one side of the chamber, creating a perpendicular pattern that separates heavier materials from the rest of the water. The heavier materials, or grit, then sink to the bottom of the chamber.

Even though the wastewater has been through screens and a grit chamber, it still contains other materials that need to be removed. The wastewater slowly flows through a sedimentation tank, and as it flows, the solids that remain in the water start to drift towards the bottom of the tank.

This is the final step in the primary stage of the wastewater treatment process. At this point, the majority of the solids have been removed from the water. But, the water is still not clean enough to be released back into the environment, so it enters the secondary stage so it can be purified even further.

The Secondary Stage of Wastewater Treatment

The secondary stage of the treatment process is designed to remove up to 85% of organic matter that remains in the wastewater. There are a number of different ways to achieve this goal, but many facilities use either the trickling filter or activated sludge process.

If the facility uses the trickling filter method, the wastewater is pumped into an area that contains between three to six feet of stones after leaving the sedimentation tank. Bacteria and other small organisms grow on these stones, so they consume or break down the organic matter in the water as it flows through the tank. The water is then removed from the trickling filter through pipes and sent back to a sedimentation tank for yet another round of purification.

Most facilities use the activated sludge process, which takes place immediately following the sedimentation tank in the primary stage of treatment. The wastewater enters an aeration tank, where it is mixed with sludge. Air is then pumped into the aeration tank to facilitate the growth of bacteria and other small organisms within the sludge. The bacteria and other microorganisms break down the organic matter in the water into harmless byproducts. The wastewater will remain in the aeration tank for between three to six hours, which gives the bacteria and microorganisms plenty of time to break down all of the remaining organic material. After leaving the aeration tank, the wastewater is usually sent to another sedimentation tank to separate the solids from the water.

Regardless of which method is used, the wastewater will go through one more round of treatment before it is released back into the environment.          After the water leaves the sedimentation tank in the secondary stage of the treatment process, it is sent into tanks where it is exposed to chlorine. Wastewater typically spends between 15-20 minutes inside these tanks with chlorine. This chemical kills the harmful bacteria that could be lurking in the water, and it also gets rid of the unpleasant smell of wastewater. Wastewater treatment plants can kill up to 99% of bacteria in water with chlorine, so this is an important step in the process.

Some facilities do not use chlorine to kill bacteria in the final stage of the treatment process. Instead, these facilities use alternatives such as ultraviolet (UV) light or ozone to kill bacteria in the water before releasing it to the environment. These alternatives do not involve the use of chemicals, so they are considered safer for the environment and wildlife.

After the water is sent through this final stage, it is released into waterways in the community. The final stage ensures that the vast majority of bacteria in the water is killed so it will not harm humans, animals, or the environment once it has been discharged.

Treating wastewater is a complex process that involves the use of high-tech and reliable equipment. Lakeside is proud to supply the equipment and purification systems that wastewater treatment plants need to filter, clean, and disinfect water before it is sent back into local waterways.  If you are interested in purchasing Lakeside equipment or systems, speak to one of our representatives today by calling 630-837-5640.

U.S. wastewater treatments function at approximately 81% of their capacity. About 15% have reached or exceeded capacity, and that’s a problem. Unusual weather patterns wreak havoc on wastewater treatment plants, leading to raw sewage ending up in rivers, lakes, ponds, and the ocean. Aging wastewater treatment facilities need upgrading. It’s not something to put off until something goes wrong.

In 2019. The Infrastructure Report Card found that despite expenditures of more than $3 billion, there was a gap of more than $80 billion needed to fix all of the problems in wastewater treatment plants across the country. Typically, a wastewater treatment plant is designed to last about 40 to 50 years.

But, weather extremes have made it clear that Mother Nature isn’t kidding around. There were flooding rains and feet of snow in California that led to landslides and floods in areas that hadn’t experienced much rain in years, followed by a “bomb cyclone.” 

Areas of Vermont that weren’t even in flood zones saw flood waters rise by many feet, leading to the flooding of several wastewater treatment plants and damage to an under-river sewer pipe, leading to a lot of raw sewage leaking into Lake Champlain. By the end of September, Montpelier’s wastewater treatment plant was still dealing with the aftermath of clogs from flood debris. 

Many other states including Maine, Massachusetts, and Pennsylvania also experienced severe flooding. Most recently, seven inches of rain devastated New York City and experts realized that many of the city’s stormwater systems were not equipped for the amount of rain that fell. 

A combination of heavy rain and equipment failure led to the release of extra rain and a little raw sewage into a ditch at an Illinois wastewater treatment plant. While parts fail, a bigger problem for this plant is that the parts that are needed are not available. It’s expected that the back-ordered parts will take a couple of weeks to arrive.

When your wastewater treatment plant needs upgrades, you have to take action. Even if it seems okay, you have to consider changing weather patterns and be prepared. But, you also need to carefully balance the costs with what the people in your area can afford. When need to modernize, what are the best steps to ensure everyone gets what they need? 

Build Your Wastewater Treatment Facility’s Upgrades Plan

You have to start with a plan. In this, you’re going to start by looking at the budget and your needs. What within the plant is most in need of upgrading? To decide this, look at the equipment, pumps, motors, etc. that break down regularly. The more time your employees spend on repairs and maintenance, the more costly it becomes. That equipment is the first to upgrade. 

Is your community growing? Now is the time to plan for future growth. If you upgrade now with plenty of room for growth, you’re not going to ask for additional equipment 10 years from now. Plan for the community’s future needs and avoid reaching capacity before the equipment is fully depreciated.

 Once you have a list of what needs upgrading, figure out the cost to make all of the replacements. That gives you a budget, but now you need to look at what the taxpayers in your district can afford. If you’re looking at water bills going up 5%, that may get more support than asking your region’s taxpayers to agree to a 20% increase. You need to remember that they’re also dealing with increasing groceries, fuel costs, heating bills, electricity rates, etc.

Ultimately, voters approve the upgrades you need. You need to provide proof that the chances are needed. You also have stakeholders to work with. They need to support your plans to modernize your wastewater treatment facility. If they’re not on board with the changes, it’s going to become difficult to complete the different steps in your plan. 

Provide a solid plan of what’s needed, why it is important, and how much it’s going to increase their bills. A slideshow with the amount of facility downtime that’s happening and how many hours of overtime are going into the emergency repairs shows how much of a problem older equipment is. Point out the grants or loans you’ve qualified for to show how much you’ve saved in the long run through government funding for the necessary improvements.

Look Into Energy-Efficient Measures

While you’re modernizing your plan, take every possible step to improve energy efficiency within your plant. LED light fixtures are a small, important change. Motion-activated lights save money by turning off when someone isn’t in a specific area of the plant.

 Alternative energy options are another upgrade that saves a lot of money. Solar panels cost extra, but if their additional cost will be paid off within five years due to the electricity savings, it’s worth it. Solar panels typically have a lifespan of upwards of 30 years, so you’ll have 25 years or so where they’re sheer profit.

Another area to consider is the capture of methane your plant produces. You can turn that into fuel to power or heat your plant. If you use methane for heat in the winter and cooling all summer, it’s a money-saving change.

Newer pumps and motors require less energy and adjust their output to match flow rates. Plus, you can have control panels that offer wireless connectivity to enable operators to check systems from a remote location. Components that are sealed and don’t require constant lubrication work better and require less downtime for maintenance.

Is It Time to Convert Integrated Sewer and Stormwater Systems?

Around 860 facilities in the U.S. process both wastewater and stormwater from heavy rains or snowmelt. It’s easy for this type of system to flood after a storm or rapid snowmelt and cause the release of raw sewage.

 If it’s time to update your system and you have a combined sewer network, it’s time to look into separating them. The Sewer Overflow and Stormwater Reuse Municipal Grant Program was established on August 10, 2023, and helps provide around $50 million in grants for districts that are upgrading combined sewer overflows, stormwater management projects, or sanitary sewer overflows. 

Always Work With a Qualified Engineer

Whether you’re planning to separate your systems or need to make upgrades to your community’s wastewater treatment facility, work with a qualified engineer. You need an expert to help make sure the changes you make are going to improve output and efficiency while also being cost-effective at the same time.

Another reason to work with a wastewater treatment plant specialist is that your system will not be fully functional when you’re making upgrades. This lower capacity may impact people in your municipality. They need to be reassured that any disruptions are going to be minimal. A wastewater treatment specialist ensures the upgrades are handled quickly and correctly.

Lakeside Equipment is the expert you need on your side. Lakeside has been in water purification for nearly 100 years and knows the best ways to modernize your plant without exceeding your maximum budget. Give us a call or reach us online to get the help you need in wastewater treatment plant design, planning, and improvements.

Why is a biological wastewater treatment process so important? Every gallon of water brought to a wastewater treatment plant is contaminated. If it comes from a residential septic tank, it’s filled with urine, feces, and dirty water from laundry, dishes, and showers/baths. The same is true for water that is piped in from sewers. Even industrial wastewater is going to contain contaminants.

It’s important to properly clean water before releasing it into natural water sources. Too much phosphorus can cause algae blooms to take over the lake or pond. Algae will end up depleting the stores of oxygen fish and other aquatic creatures rely on. As many lakes are becoming overrun with blue-green algae, states are all taking measures to limit the chemicals, minerals, and bacteria by making sure water treatment plants meet requirements that remove these items from water.

Primary vs. Secondary Treatments

Before this water returns to lakes, streams, or public water systems, it has to be cleaned and disinfected. That’s done through several steps that include biological wastewater treatment, but there are also primary measures. You have screens that remove items that won’t break down. Many of these items should be trashed, but it doesn’t always happen. People don’t realize the problem it’s posing when they flush things that aren’t meant to be flushed. Tampon applicators, plastic wrappers, toy cars, and baby wipes are just a few of the things that make it to a wastewater treatment plant.

There are two main types of wastewater treatment: primary and secondary. Primary treatment is a fairly basic process that is used to remove suspended solid waste and reduce its biochemical oxygen demand in order to increase dissolved oxygen in the water. Primary is the use of screens and trash rakes to remove larger items. It’s also the grit removal system.

It’s estimated that primary treatment only reduces biochemical oxygen demand by about 30% and suspended solids by up to 60%. Therefore, the water needs to be treated again in order to remove additional contaminants. That’s where secondary treatment comes in.

Secondary treatment involves complex biological processes that are used to remove organic matter that was not removed during primary treatment. You’re using biology and microorganisms to devour and remove other contaminants. There are many different kinds of biological wastewater treatments, however, each treatment can be classified as either an aerobic, anaerobic, or anoxic treatment depending on whether or not oxygen is present. Here’s a quick look at the three.

What Are Biological Aerobic Treatments?

If a treatment is classified as a biological aerobic treatment, it means it takes place in the presence of oxygen. Aeration is needed to oxygenate the wastewater through the use of mixers and aerators. Aerobic treatments work faster and result in cleaner water than anaerobic treatments, which is why they are preferred.

The most popular aerobic treatment is the activated sludge process. At the start of the activated sludge process, wastewater moves into an aeration tank that is pumped full of oxygen. Aerating the wastewater increases microbial growth, which speeds up the decomposition of the organic matter that is still in the water. Then, this wastewater is transferred into a secondary clarifier, which is also known as a secondary settler or settling tank.

The sludge, or waste, within the water will start to separate, leaving only the clean and treated water behind. Remaining sludge can then be converted into a mixture of methane and carbon dioxide that can be used for heat and electricity. Any remaining sludge is dewatered (dried) and composted or sent to a landfill. The activated sludge process is one of the most efficient ways to biologically treat wastewater and it’s effective.

Another popular aerobic treatment is the trickling filter process. During the trickling filter process, wastewater flows over a bed of rocks, gravel, ceramic, peat moss, coconut fibers, or plastic. As the wastewater flows, the microorganisms in the water quickly start to attach to the bed. A layer of microbial film will soon start to grow over the bed. Over time, the aerobic microorganisms found in this layer of microbial film will start to break down the organic matter found in the water. If needed, oxygen can be infused or splashed into the wastewater to maintain aerobic conditions.

The trickling filter process can rapidly reduce high concentrations of organic matter in the water, however, there are disadvantages to this method as well. A trained professional will need to watch over this process from the start to finish, so this may not be the best choice for facilities with limited resources. Clogs are also fairly common, so the trained professional will need to know how to identify and fix this issue.

Some facilities use aerated lagoons as opposed to the activated sludge process. With this method, the wastewater sits in a treatment pond, where it is mechanically aerated. Pumping oxygen into the pond will increase microbial growth and speed up the decomposition of organic matter. However, unlike the activated sludge process, the water is not moved into another tank after it has been aerated. Instead, the separation of the sludge and the clean water happens within the treatment pond.

Using an oxidation pond is another way to biologically treat the wastewater. This process involves removing the organic matter from wastewater using an interaction between bacteria, algae, and other microorganisms. This method may seem similar to an aerated lagoon, but it is far more complex and it takes much longer to achieve the desired results. This process also requires a lot more land space than the others, so it is typically not used in areas that are densely populated.

What Are Biological Anaerobic Treatments?

Biological anaerobic treatments take place in the absence of oxygen. Aerobic treatments are usually preferred, however, it is best to use an anaerobic treatment when dealing with highly concentrated wastewater.

The upflow anaerobic sludge blanket reactor is a single-tank anaerobic treatment, which means it takes place in one tank. This process begins with the wastewater entering through the bottom of the reactor tank. As the wastewater naturally starts to flow upwards, it encounters a sludge blanket that is suspended within the tank.

The sludge blanket consists of microbial microorganisms that break down organic matter within the wastewater. When the wastewater encounters the sludge blanket, the microorganisms quickly break down the organic matter, leaving clean water behind to rise to the top of the tank. There are other similar anaerobic treatments, including the anaerobic filter, which involves a filter that has microbial microorganisms on its surface.

What About Biological Anoxic Treatments?

You also have anoxic treatments. In this case, the microorganisms use other molecules to multiply. There may not be oxygen, but nitrates and nitrates act in its place. Anoxic treatments help remove nitrates and nitrites, selenates and selenites, and sulfates from the wastewater.

People are seeing this more in areas where nitrates and sulfates are a concern. It’s the best way to remove as many of them as possible. Anoxic treatments work without adding additional chemicals.

While many states stopped using laundry detergents that contained phosphates, you still see shampoos and soaps with sulfates and nitrates. High levels of sulfates can give water an unpleasant taste and can be dehydrating. High levels of nitrates can impact how oxygen moves around the bloodstream. While it takes a lot to affect a person’s health, it’s still important for water districts to make sure water is safe for everyone.

What Happens After Wastewater is Biologically Treated?

It’s estimated that biological treatments can remove up to 90% of the wastewater’s contaminants. Because all of the contaminants have not been removed, the wastewater is usually sent through a tertiary treatment process after the biological treatment. During this stage, heavy metals, nutrients, and other impurities are removed from the wastewater.

The most common type of tertiary treatment involves the use of chlorine, which is a powerful disinfectant. Small amounts of chlorine are added to the water to remove the remaining impurities before the water is discharged into the environment. There are other ways to disinfect the water that do not involve chemicals. Many facilities avoid the use of chlorine by using UV light to treat the water.

Regardless of which method is used, it is estimated that about 99% of all contaminants have been removed from the wastewater after it has completed this treatment. Once the chlorine is at safe levels, the water can be released back into water sources or moved to storage tanks that supply homes and businesses with water.

What Equipment Is Needed?

The equipment that’s needed for biological treatment systems depends on the area and load. A large city processes far more wastewater than a small town. Systems may want to put a lot of focus on being energy efficient. So many have strict discharge restrictions that must be adhered to. Take a look at some of the equipment that’s used in biological treatments.

#1 – Closed Loop Reactor (CLR) Process

The CLR Process is ideal for its consistency and performance whether you’re in a cold climate or a warm one. It’s designed in a closed loop like a circle or extended oval like you’d see at a race track. Aerators and multi-basin designs complete the system. Because this system is customized for simple, effective operation, it can handle increased loads with ease and doesn’t require a lot of attention from workers in a wastewater treatment plant.

Not only can you save money with the CLR Process, but it also helps lower energy costs. It’s adept at removing phosphorus and nitrogen. If you need a system that works well at cleaning water without driving up costs for the members of your district.

#2 – Extended Aeration/Complete Mix Process

An economical solution biologically processing of wastewater is a package treatment plant. It’s a smaller design that’s ideal when space is limited. Choose an E.A. Aerotor Plant or a Packaged Extended Aeration Plant. What are the differences?

An E.A. Aerotor Plant uses the design from a CLR Process for aeration and mixing and a Spiraflo Clarifier to help the sludge settle. The addition of oxygen in the aeration/mixing process aides biological processing and helps remove more sludge. You add other components as needed to create a custom wastewater treatment design.

You could choose the Package Extended Aeration Plant to have an all-in-one system in a single steel tank. It is designed for low usage and includes your screens, aeration, clarification, sludge tank, and disinfection in one. You don’t need a lot of manpower to effectively operate this system.

#3 – Sequencing Batch Reactors

Treat wastewater in one basin using the Sequencing Batch Reactor or Continuous Feed Sequencing Batch Reactor. This system works by aerating and mixing wastewater to create a lot of oxygen. It then “decants” so that the water is discharged without needing activated sludge pumping or external clarifiers. It allows biological wastewater processing to process for an extended period.

#4 – Magna Rotors

If you’re relying on a system that does add oxygen to help with biological wastewater treatment, Magna Rotors are one of the leading choices. Think of them as large mixers that add oxygen. The benefit is that the rotors have a fiberglass cover that does not get too cold in the winter. You’re not as likely to see the equipment stop working in the winter. The stainless steel blades are also durable and not likely to become bent or dented.

#5 – SharpBNR Process Control

This is an add-on that can help with overall energy consumption and performance. The process control can be programmed to measure things like dissolved oxygen and aeration. Adjust them as needed to meet your goals using a computer or the Human Machine Interface on the control panel. You can link it to a SCADA system, too.

Since 1928, Lakeside Equipment Corporation has been committed to providing clean and healthy water to people around the world using innovative biological treatment processes. Contact Lakeside Equipment Corporation to learn more about our biological treatment systems. Call 630-837-5640 or visit our website to connect with one of our knowledgeable representatives today.

Within a wastewater treatment or water treatment plant, a screw pump moves all of that liquid at a constant speed in the most efficient way possible. Screw pumps are designed to avoid clogging and excessive wear. They don’t require much maintenance, but that doesn’t mean they never experience issues. Here’s a list of common screw pump problems and how to resolve them.

What Is a Screw Pump?

Before getting into common screw pump problems, it helps to know how they work. There’s a giant screw inside a trough or pipe that continually rotates. As it does, water pushes from the bottom of the screw to the top with the help of momentum, the screw’s ridges, and the sides of the trough or pipe. This moves liquids from a lower point like a pool or wet well to a higher point like a basin or tank.

What Issues Are Common?

What are the most common issues people experience with their plants’ screw pumps? These six issues are the most likely to occur.

Cavitation

Sometimes, pressure changes in liquid form small cavities, and then allow vapor and gases to fill those pockets that implode. This is known as cavitation and occurs when the static pressure is lower than the liquid’s vapor pressure. 

Why does cavitation occur? If there is insufficient suction pressure, it’s common. Having high fluid viscosity or gas and air in the fluid are other causes.

When cavitation happens, it creates vibrations that can damage the mechanics within the pump and lead to the failure of the bearings, seals, or shaft. It’s important for the pressure at the suction portion of the pump to remain steady. Reduce the pump’s speed and increase the level of fluid in the suction tank. If gas or air are present, remove them before the liquid makes it to the screw pump.

High Pressure With the Discharge of Liquids

A high discharge pressure is often tied to a blockage in the discharge line. It also occurs if the valve is closed. Those can be easy fixes. Find the blockage or open the valve. It also occurs if the pump speed is set too high. Again, it’s an easy fix. 

Leaks

Leaks also create noises as the fluid levels being moved through the screw pump aren’t adequate. You should notice leaks as you’ll find fluid where it shouldn’t be. They usually occur when seals are worn or fittings are loose. The repairs for leaks involve replacing worn or damaged seals and tightening or replacing loose or broken fittings.

Loss of Flow or No Flow

If your system is not pushing water at all or the flow rate has greatly diminished, it’s often a sign that your motor is working too slowly or is overloaded. It can be tied to a loose belt if the pump is belt-driven. It can also be tied to insufficient suction or the suction pipe being inadequately sized. If the fluid pressure is too close to or matches the vapor pressure, it can lead to issues with flow. If the viscosity of the liquid is too high or the liquid is too hot, flow rates are also impacted.

When any of this is happening, the motor needs to be examined. Make sure everything is lubricated correctly, that belts are tight, and that a variable frequency drive is set correctly. Check the fluid’s temperature and viscosity, and change speed and suction rates if needed.

Loud or Excessive Noise

Is your screw pump making loud rattles, bangs, or grinding noises? Those are not normal noises and need to be investigated. A screw pump makes noise, but excessive or extremely loud noises are not okay.

Loud or excessive screw pump noise is a sign of a clog, cavitation, blocked suction or discharge, misalignment, or worn or damaged bearings. If there are problems, have the repairs made ASAP. Alignment may need to be adjusted. Any blockages need to be cleared.

Make it a point to know how a maintained, properly functioning screw pump sounds. The easier it is to identify the normal noises, the easier it is to determine when a noise isn’t the same. 

Overheating

While the maintenance of a screw pump is minimal, you still need to make sure the pump components are lubricated and working properly. When there is too much friction, overheating is possible and damages a pump in a short time.

Overheating is often linked to operating pumps at too high a speed, clogged lines, or air leaks within the system. All three of these possible causes have to be addressed. 

If you are running your pump faster than is needed, slow it down and see if the problem goes away. Check the lines for clogs, and look for air leaks. Finally, check the lubrication levels and make sure there is adequate lubrication within the pump.

Don’t Delay Troubleshooting Issues

Never delay your attempts to troubleshoot issues. If there is a problem and you wait too long, the repairs could become far more costly. Identifying issues in the earliest stages can save money in the long run. Especially if you have a screw pump expert like Lakeside Equipment to help with the repairs.

Most problems are avoidable if you perform routine maintenance on your screw pumps. You should always keep an eye out for leaks or unusual noises. If there are any concerns, call in an expert. It’s better to pay for an inspection and learn nothing is wrong than to wait and have your pump fail and need to be replaced.

Two Types of Screw Pumps

When you’re investing in screw pumps in your plant, there are open and enclosed screw pumps. Enclosed screw pumps have the screw installed within a solid pipe. Open screw pumps are in a concrete or steel trough. 

Lakeside Equipment offers two types of enclosed screw pumps: Type C or Type S. Type C has a smaller horizontal footprint and an outer rotating tube, while Type S has a stationary tube with a pivot feature to reduce the maintenance needs on the lower bearing. There’s no grouting work required, so installation costs are lower.

Open screw pumps don’t clog, so you don’t need to pre-screen your wastewater. Installation doesn’t require a wet well, and maintenance is minimal. But, they’re going to require a lot of concrete, steel, and possibly grout to build the troughs. 

Which is right for your plant’s needs? Talk to the experts at Lakeside Equipment about your goals and plant design and we’ll help you figure out the right solutions for your budget, volume, and space.