SLUDGE & BIOSOLIDS PROCESSING RESOURCES

• Using Biotechnology To Restore Productivity Of Anaerobic Digesters

  When the production line of anaerobic digestion is slowed, efficiency is lost, and the reverse is true when holdups are cleared.

• Challenging Aeration Design Standards Results In Lower Cost, Higher Performance

  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.

• A Growing Demand For Reliable And Resilient Renewable Energy

  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.

• A Time-Based Alternative To Multi-Stage Biological Nutrient Removal

  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.

• Devising A Unique Dewatering System In A No-Room-For-Error Bypass Project

  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.

• Evaluating Polychem Fiberglass Flight Scraper Profiles

  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.

• Defining Lamella In The Sedimentation Process

  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.

• Top 5 Considerations When Choosing A Flight Scraper For Your Rectangular Clarifier

  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.

• Tube Settlers Vs. Plate Settlers: Comparing Lamella Technologies

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

• Comparing Sludge Removal Systems For Water Treatment Plants

  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.

• Trickling Filter Technology Is Still Relevant

  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.

• Not All Sprockets Are The Same

  In rectangular clarifiers, straight-line sludge collector mechanisms have in-tank sprocket gears that are mounted on shafting to transmit torque from the drive unit and help keep the chain and flight system in motion. There is a common misconception that all sprockets are the same, simply because they have the same number of teeth and run on 720-series chain. There are a number of other features that distinguish between a long-lasting, wear-resistant gear and a sprocket that needs to be replaced after a few years due to wear or failure.

• Thermoformed Vs. Extruded Tube Settlers

  Tube settlers use multiple tubular channels, which are adjacent to each other and sloped at nominal 60˚ angles, to form an increased effective settling area. This configuration allows for a shorter particle setting depth, and as the tube settler channels collect solids, they form a compact mass that promotes the solids to slide down the channel. Tube settlers are an inexpensive method of upgrading existing clarifiers and sedimentation basins by allowing increased flow rate and/or improved performance. They can also reduce the footprint of new clarifier construction.

• Winter Maintenance For Trickling Filters

  As winter approaches and cold weather sets in, both the air and wastewater temperatures of your trickling filter can drop to the single digit area, so we want to bundle it up to prevent it from catching a “cold.” It is critical to preserve heat within the filter so the bugs are happy, healthy, and keep working hard to clean up the wastewater that humans produce. Here are a few measures you can take to keep the bugs happy and your trickling filter efficient:

• Using Biotechnology To Restore Productivity Of Anaerobic Digesters

  When the production line of anaerobic digestion is slowed, efficiency is lost, and the reverse is true when holdups are cleared.

• Challenging Aeration Design Standards Results In Lower Cost, Higher Performance

  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.

• A Growing Demand For Reliable And Resilient Renewable Energy

  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.

• A Time-Based Alternative To Multi-Stage Biological Nutrient Removal

  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.

• Devising A Unique Dewatering System In A No-Room-For-Error Bypass Project

  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.