Featured Articles

  1. Biological Nutrient Removal With Advanced Primary Treatment 2/1/2024

    Learn how advanced primary treatment can increase settled solids without the use of chemical additions, reducing capital and operating costs and ensuring more consistent effluent.

  2. 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.

  3. Microplastic Removal With Cloth Media Filtration 4/18/2022

    Pile cloth media filters are a cost-effective and simple solution to prevent microplastics from entering water systems through industrial effluent and municipal wastewater.

  4. Ushering In A New Era Of Sustainable Biological Treatment 9/14/2021

    Conventional activated sludge treatment for wastewater is becoming increasingly problematic over time. Not only does the process require significant amounts of energy, which drives up operating expenses, but utilities are under mounting pressure from the U.S. EPA to go green.

  5. Cloth Media Offers Chemical-Free Alternative For Advanced Primary Treatment 9/8/2020

    Pile cloth media filtration technology has been around for decades, used mainly for tertiary wastewater treatment — a final stage of the treatment process — to filter effluent before it leaves the plant. However, the technology is now poised to provide extensive benefits as an advanced primary treatment technology. It stacks up well against other methods, which include chemically enhanced solutions that present additional operating costs and ultrafine screens that remove fewer solids.

  6. AquaSBR® Replaces 60-Year-Old Treatment Plant 9/1/2020

    The Moab Water Reclamation Facility (WRF) was initially constructed in the late 1950’s to provide primary treatment of domestic wastewater for the Moab area. However, the plant could no longer keep up with the higher flows and loading due to population growth and rising tourism. In addition, with aging infrastructure and the new permit cycle in sight, upgrades to the biological treatment were necessary to ensure full compliance. Read the full case study to learn more.

  7. AquaNereda® Aerobic Granular Sludge Technology 4/10/2020

    The AquaNereda® Aerobic Granular Sludge (AGS) Technology is an innovative biological wastewater treatment technology that provides advanced treatment using the unique features of aerobic granular biomass. An aerobic granular biomass is comprised of compact granules that provide advantages compared to other secondary treatment processes.

  8. Abbottstown Retrofitted A Flow-Through System With An AquaSBR® System To Meet Stringent Effluent Requirements 4/9/2020

    The Abbottstown-Paradise Joint Sewer Authority was incorporated in 1973 and utilized a continuous flow activated sludge system with an average daily design flow of 0.21 MGD. At that time the plant was only required to reduce total suspended solids (TSS) and effuent ammonia to required levels to serve the area population of about 2000. Due to urban growth and increased storm flow runoffs, the plant was in need of an expansion and upgrade by the late 1990s. 

  9. AquaDiamond Cloth Media Filters Achieve 0.1 mg/L Total Phosphorus Limit 4/8/2020

    With the current national emphasis on restoring the water quality of America’s urban waterways, the City of Brockton, Massachusetts, Advanced Water Reclamation Facility (AWRF) wanted to stay ahead of the regulatory cycle – in particular, phosphorus discharge limits set forth by the National Pollution Discharge Elimination System (NPDES) program of the United States Environmental Protection Agency (U.S. EPA). For this region of the country, the U.S. EPA has proposed total phosphorus (TP) discharge limits of 0.1 mg/L.

  10. AquaDisk® Filters Reduce TSS And NTU For Power Plant Process Water 4/6/2020

    Shepard Energy Centre (owned by Enmax and Capital Power Corporation) is located in Calgary, Alberta, Canada. It began operating in March 2015 and is capable of generating over 800 megawatts of electricity to Alberta residents using natural gas. The facility utilizes (2) combustion turbines featuring a combinedcycle technology to generate electricity, and in addition, processes waste heat through a steam turbine to produce even more electricity. This electricity generation process makes Shepard approximately 30% more efficient than traditional coal-fired plants, and reduces overall fuel costs. Not only is Shepard’s plant more efficient, but better for the environment by emitting less than half of the CO2 emmissions per megawatt hour compared to a coal generated facility. Sulphur dioxide and nitrogen dioxide emissions are also reduced.