Microfiber Media Help Achieve Phosphorus Limit

Sponsored by

The City of Brockton, Massachusetts, Advanced Water Reclamation Facility (AWRF) wanted to prepare for a proposed new phosphorus discharge limit set forth by the National Pollution Discharge Elimination System (NPDES) program of the United States Environmental Protection Agency (U.S. EPA).

The plant's existing treatment scheme included physical settling, activated sludge treatment and final filtration using two AquaDiamond® cloth media filters from Aqua-Aerobic Systems, Inc.

Even though the filters performed to a level well below the current phosphorus discharge limit, plant superintendent Dave Norton began looking for ways to meet the anticipated 0.1 mg/L limit with minimal equipment modification and without raising operating costs.The Brockton staff, working with Aqua-Aerobic Systems, conducted tests using OptiFiber PES-14® microfiber cloth media installed on one of the AquaDiamond filtration units and compared its performance to the unit using the existing OptiFiber PES-13® pile cloth media.

Microfiber Media Help Achieve Phosphorus Limit

From December 2012 to April 2013, the two filters received common influent from the plant's secondary clarification system. Feed quality and discharge quality were monitored for phosphorus, as well as total suspended solids, turbidity, pH, iron and alkalinity.

The two filter units operated under identical flow and loading conditions during the study. The results show that the OptiFiber PES-14 microfiber media consistently reduced phosphorus levels to below the 0.1 mg/L target.

Additionally, the microfiber media outperformed the existing pile cloth media with respect to final total suspended solids, turbidity, particle size distribution and iron concentrations and fared extremely well during average design and peak HLR testing

The Brockton AWRF demonstrated it can meet the anticipated discharge standards. The plant also installed a third AquaDiamond CMF (with the OptiFiber PES-14 microfiber media) and a fourth is under construction and expected to be online soon. The AquaDiamond filter unit fitted with the original pile cloth media is also being retrofitted with the microfiber media.

www. aqua-aerobic.com

Sponsored by

TODAY'S HEADLINES

PA water authority adopts new smart water network

The Pittsburgh Water & Sewer Authority has announced that it will soon implement a new smart water network to better detect leaks, manage data and cut costs across the board.

Industrial water market targeted by SUEZ Environnement investment

SUEZ ENVIRONNEMENT, through its subsidiary Degremont, has taken shares in Evatherm, a Swiss engineering company specialised in evaporation and crystallization technologies.

Wastewater contract worth €2m in Portugal awarded to Acciona

Acciona Agua has been awarded a contract to design, build and start up a wastewater treatment plant at Vila do Bispo in the Algarve, which will service a population of 14,000 inhabitants...

RO membrane elements help Ghanaian beverage firm stop downtime

After suffering from filter clogging and facility downtime, North Ghana drinks company Mazareka turned to German company LANXESS to take delivery of reverse osmosis (RO) filter elements to supply clean drinking water...

FOLLOW US ON SOCIAL MEDIA