Sludge & Biosolids Processing Resources

  1. Challenging Aeration Design Standards Results In Lower Cost, Higher Performance 6/20/2022

    By using airflow-based aeration controls, the Brockton, MA wastewater treatment plant (WWTP) was able to reduce energy usage by 23% while producing higher-quality effluent.

  2. A Growing Demand For Reliable And Resilient Renewable Energy 6/8/2022

    From the increase in electronic cars to solar power, the benefits of renewable energy range from improved public health to reliability and resilience. Governments and private organizations have established climate goals to reduce their carbon emissions, and exploring renewable energy sources — such as solar, wind, and renewable natural gas — are key to meeting these goals.

  3. A Time-Based Alternative To Multi-Stage Biological Nutrient Removal 6/6/2022

    A phase-activated sludge system (PASS) reduces energy consumption by combining the aerobic and anoxic tanks and alternating diffusers between the on and off position based on a preprogrammed schedule.

  4. Devising A Unique Dewatering System In A No-Room-For-Error Bypass Project 6/3/2022

    Xylem Rental Solutions engineered an affordable and functional temporary bypass system to keep water out of a sedimentation basin so crews could erect a weir to reduce the potential for carbon discharge into the Niagara River.

  5. Evaluating Polychem Fiberglass Flight Scraper Profiles 5/23/2022

    With six different Polychem fiberglass flight scraper profiles to choose from, Brentwood offers more flight options than any other chain and flight manufacturer. All Polychem flights feature a flat-face design to minimize recirculation of solids and are fabricated from isophthalic polyester resin. They offer flexible solutions to accommodate tank wall variations and can be supplied pre-drilled and notched to account for chain center lines and floor and return rail wear strip locations.

  6. Defining Lamella In The Sedimentation Process 5/23/2022

    Lamella, or lamellae, is a term frequently used when discussing sedimentation and clarifier design. Lamella clarifiers can be used in applications ranging from municipal water and wastewater treatment to various industrial applications. The primary benefit of utilizing lamella clarifiers over conventional clarifiers is reduced footprint. However, the term “lamella” is often used too broadly in the industry without clear intention.

  7. Top 5 Considerations When Choosing A Flight Scraper For Your Rectangular Clarifier 5/20/2022

    What should you consider when planning to replace the flights in your rectangular clarifier? Flights are also known as scrapers, c-channels, flight boards, drag flights, and sludge pushers. Regardless of what you call them, they serve the same purpose. Flights convey settled solids to a hopper or collection pit and push surface debris into a scum removal device in a straight-line clarifier system. Although flights may all seem the same at first glance, there are some key characteristics to think about when evaluating which type you may need for your chain and scraper system.

  8. Tube Settlers Vs. Plate Settlers: Comparing Lamella Technologies 5/17/2022

    Although both types of lamella sedimentation equipment operate on the same principles of solids settling, there are several notable differences between them. 

  9. Comparing Sludge Removal Systems For Water Treatment Plants 5/12/2022

    Due to limited clearance and accessibility, effective removal of settled sludge beneath tube settlers has long been a challenge for plant owners and design engineers. They needed a sludge removal solution with a low-profile design that would offer flexibility during operation and maintenance.

  10. Trickling Filter Technology Is Still Relevant 5/12/2022

    Trickling filters have proven to efficiently remove pollutants from wastewater since their inception, earning recognition as a technology that will continue to serve the industry well into the future.