Prior to the installation of BioMag, the Mystic facility’s total nitrogen discharge was over 30 lbs per day. Two months after BioMag installation, that number had shrunk to 12 lbs per day.
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Stonington, CT (Vocus) July 26, 2010
The Town of Stonington Connecticut’s Water Pollution Control Authority today announced its plans to embark on a “significant upgrade” of its Mystic Water Pollution Control Facility. Plans call for the installation of a state-of-the-art nutrient removal system called BioMag™, developed and implemented by Cambridge Water Technology, to meet the plant’s performance goals. Cambridge Water Technology has already successfully completed a full-scale, 4 month-long demonstration at the Mystic site which confirmed the efficacy of the technology and its cost effectiveness.
To improve the water quality of Long Island Sound, The Mystic Water Pollution Control Facility is required to comply with the State of Connecticut's General Permit for Nitrogen Discharges, which sets the plant's average effluent nitrogen concentration goal to less than 5 mg/L. To achieve this level of treatment with conventional technology, the Mystic WPCF would have to be significantly expanded. In the 2009 trial, CWT’s BioMag™ process demonstrated that the plant could meet its future effluent limits without adding new tankage or treatment steps.
“Prior to the installation of BioMag, the Mystic facility’s total nitrogen discharge was over 30 lbs per day (greater than 7.5mg/L). Two months after BioMag installation, that number had shrunk to 12 lbs per day (less than 4 mg/L). That level of nitrogen reduction was more than we could have hoped for,” said James Sisk, Chairman of Stonington’s Water Pollution Control Authority. “Last year’s trial proved how the BioMag process would provide Mystic with a stable, high performance and economical wastewater treatment system well into the foreseeable future.”
Stonington’s Water Pollution Control Authority has been actively evaluating plant upgrade options for submittal to the DEP as part of its Facilities Plan to meet the long-term needs of the town and improve wastewater effluent. Camp Dresser and McKee Inc. (CDM) has been the town’s engineer in the facilities planning effort.
“The town of Stonington has known for some time that its aging wastewater treatment facilities needed to be brought into compliance with state-mandates. We’ve evaluated available processes and technology options for their ability to meet WPCA goals,” said Bill McConnell, Project Engineer, CDM. “In BioMag, we have identified the best, most cost-effective technology to provide the necessary treatment within the physical constraints of an aging Mystic facility. This technology positions the town with a long term, environmentally responsible and cost-effective solution.”
Cambridge Water Technology’s patented BioMag ballasted activated sludge process is a technology that achieves low effluent suspended solids, BOD, nitrogen, and phosphorus concentrations in a compact footprint. BioMag has the ability to substantially reduce biological treatment tank volume requirements and dramatically decrease the footprint needed for BOD and nitrogen removal. The key to BioMag’s effectiveness is its marked ability to improve the rate and reliability of the clarification process of biological treatment systems.
“Our BioMag technology represents the future for a wide spectrum of aging treatment facilities that require improved nutrient removal and higher treatment capacity,” said Charles Hamlin, President, Cambridge Water Technology. “When we were contacted by CDM about Stonington’s Mystic facility and its unique needs, we were confident that BioMag would be an excellent long-term solution at an attractive price point. With the support of the Town, CDM and United Water, our full-scale demonstration proved that BioMag is the best solution to the treatment and facility challenges facing the Mystic plant. We look forward to working with the Town to establish a new standard of effluent quality for the citizens of Stonington.”
About the Town of Stonington, CT
For additional information about the town of Stonington, CT, please visit: http://www.stonington-ct.gov/pages/index
About Cambridge Water Technology, Inc.
Cambridge Water Technology, Inc. develops, designs and provides practical and innovative solutions to the economic and operating challenges of water and wastewater treatment for industries and municipalities. The Company’s patented technologies include CoMag, a high performance and low cost particulate and Phosphorous removal process; and BioMag, a unique process that enhances the performance of biological treatment systems. For additional information please visit: http://www.cambridgewatertech.com
About Camp, Dresser and McKee
CDM is a consulting, engineering, construction, and operations firm delivering exceptional service to public and private clients worldwide, and works with many cities and towns in Connecticut that face wastewater treatment challenges similar to Stonington.
Town of Stonington, CT
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