Sewer Sleuthing

A sewer is someplace to discharge wastewater and to convey the flow to a POTW (Publicly Owned Treatment Works) for treatment. The average person pays very little attention to the sewer system until odors become obvious, or flow backups into the streets, businesses, or homes. Unfortunately, many residents and businesses use the sewer for trash…

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Considerations Before Beginning Your Wastewater Project

1 Do You Know What Your Wastewater Needs are? Do you know what pollutants are in your wastewater and what pollutants need to be removed? What are the sources of the pollutants in your plant?  2 Does your design engineer have experience with your type of wastewater to achieve compliance? Doing business with a company…

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ELLIS INSIGHTS 10 World Water Day

Each year on March 22nd, the United Nations brings to our attention World Water Day.  World Water Day brings awareness to the world the importance to freshwater. It is estimated that nearly two billion people do not have access to safe drinking water.   We continually hear about Global Warming and how this continues to drive…

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Simple Customized Solutions

Just like all wastewaters are not the same, the solutions are not the same. The equipment also is not the same.  A wastewater solution is not just a piece of technology, it is a process, and in most applications the process needs to be customized.  Defining the goals and objectives to achieve compliance are critical…

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Making It Fit

Sometimes you have big compliance goals but don’t have the space required for a large-scale system.  Designing high-performance systems for those tight areas is something that Ellis can deliver.  In many applications, there is a lack of floor space to install a full wastewater treatment system on the ground floor.  Taking some of that equipment…

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Visit Ludell at IPPE 2022

Ludell IPPE 2022

Are you attending IPPE in 2022? Be sure to drop by booth C12602 to see what’s new with Ludell Manufacturing and their line of Direct Contact Water Heaters, Heat Recovery Solutions, Pump and Valve Packages and more! The International Production & Processing Expo (IPPE) will be held at The Georgia World Congress Center in Atlanta,…

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How Much Do You Know About Oils And Grease In Wastewater?

Test your Oil and Grease Knowledge True or False Multiple Choice Questions were developed by Steve Spicer and John Schultz and reviewed by the Operations forum Editorial Advisory Board and the Association of Boards of Certification (Ankeny, Iowa) Wastewater Treatment Validation and Examination Committee.  To check your answers please email John Schultz at  jschultz@elliscorp.com. 

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DAF Surface Skimmer Operation and Maintenance

The Surface Skimmer on a Dissolved Air Flotation Unit is a key piece for DAF Performance.   The Surface Skimmer typically consists of a series of flight scrapers (skimmer blades) and chain mechanism.  The gearbox mechanism and motor allows for periodic skimming. A Variable Frequency Drive (VFD) is included to adjust the speed of the skimmer…

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Too Much Sludge In Your DAF? (Part 2)

Bottom Solids Some solids will settle on the bottom of the DAF separation chamber.  When this occurs, these solids need to be removed frequently.  Allowing these solids to accumulate on the bottom of the tank can become septic (anaerobic).  Septic sludge can cause the wastewater pH to decrease as well as produce sulfides which is…

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Too Much Sludge In Your DAF? (Part 1)

Dissolved Air Flotation Systems are designed to separate solids from the wastewater.  Microbubbles attach to the particulates and float to the surface of the DAF to form a sludge blanket.  We are often asked how thick should we maintain the surface sludge blanket? There are a number of factors that contribute to the thickness of…

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