• The rise in the use of disposable wipes and other non-dispersible debris is driving the need for more efficient handling of solids in pumps at municipal lift stations and wastewater treatment plant headworks.

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

  • 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.

  • 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 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.

  • 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.

  • 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.

  • 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.

  • 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.

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

  • 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 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.

  • 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.

  • 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.


  • Flow And Concentration Measurement For Automated Sludge Thickening

    Learn how a wastewater treatment plant in eastern Switzerland relies on the targeted use of flocculants to prevent sludge washout. 

  • Godwin SD150M Dri-Prime Pump

    The Godwin SD150M Dri-Prime pump is a versatile, general purpose dewatering pump designed for use in the industry’s most challenging construction, municipal, industrial and emergency response applications.

  • Godwin HL150M

    The Godwin Dri-Prime HL150M pump offers flow rates to 1,650 US GPM (374 m³/hr) and has the capability to discharge pressures to 219 psi (148 m).

  • Godwin CD150S

    The Godwin CD150S Dri-Prime pump is a versatile, general purpose dewatering pump designed for use in the industry's most challenging construction, municipal, industrial, and emergency response applications. 

  • Biological Treatment Technologies

    Brentwood has the ability to provide you with products and solutions that offer safe and effective biological treatment, while also addressing your most complex environmental, cost, and treatment concerns.

  • Tube Settler Systems

    Brentwood tube settlers consist of a series of sloped, tubular channels and structural wave sheets that reduce settling distance and combine to form an increased effective settling area. Constructed of robust, yet lightweight PVC, the modules can be supported with minimal structures while maintaining tensile, flexural, and impact strength. Heavy duty sheets are available for high-load applications.

  • MRI Ultra-Scraper™ Sludge Collector

    The MRI Ultra-Scraper has unmatched quality and design. Equipped with heavy-duty components and reciprocating linear blades, the MRI Ultra-Scraper is more robust than conventional scrapers, with quicker installation times. The high-capacity system has four key components:

  • Hydro MicroScreen

    Drastically reduce the cost, footprint and energy consumption for industrial and municipal wastewater and process water treatment.

  • Hydro-Sludge Screen

    Remove, compact and dewater solids from sludge to cut maintenance, reduce handling costs and increase biosolids value.

  • Natural Wastewater Solutions

    In waste water, we offer a natural solution for volatile solids, toxins and pathogens, fats and oils - while lowering tipping, hauling and labor costs, water and energy use, and some other, recurring costs. Our wastewater products are a concentrate with aerobic and anaerobic bacteria, living together in a proprietary chain, waiting to devour bio solids, oils, toxic chemicals and more - leaving pathogen-free, safe-to-discharge water.

  • IGNITE™ Integrated Nitrification Process

    The IGNITE™ Integrated Nitrification process is a non-activated sludge solution for upgrading lagoon based treatment plants to achieve improved BOD and ammonia removal. The process utilizes a combination of Parkson’s Biofuser® lagoon aeration system and the TumbleOx™ Nitrification Reactor process.

  • TumbleOx™ Nitrification Reactor

    The Parkson TumbleOx™ Bioreactor consists of a treatment tank(s) containing a series of slowly rotating drums. Each drum is partially filled with loose media which freely tumbles inside the five-foot diameter drum as it rotates. A thin biofilm grows on the media and provides biological treatment. The unique media design maximizes surface area for biological growth and also aerates the wastewater as the drum turns, providing dissolved oxygen for the micro-organisms. The system components include the rotating drum, plastic media, and the bearings and simple drive mechanism to slowly rotate the drum. No supplemental aeration system is required.

  • Recording & Control: Online Data Recording And Control In Anaerobic Digestion Processes

    Solids present in wastewater need to be safely and comprehensively treated and removed. This means not only removing toxic compounds, including both organic and inorganic materials such as heavy metals, but also eliminating any harmful bacteria present in the solids.


Trickling filters have been effectively removing pollutants from wastewater for over one hundred years. Learn more about how this technology has evolved since its inception, and how it became a part of the South Monmouth Regional Sewerage Authority's secondary treatment process.