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Selection, Installation, Startup and Testing of the World's First Full-Scale CoMag Phosphorus Reduction Tertiary Treatment System

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Abstract:

The Town of Concord, Massachusetts has incorporated magnetically enhanced coagulation (CoMag™) technology for phosphorus removal into a 20-year old wastewater treatment facility. Brought online in November 2007, this tertiary treatment system is the first full-scale CoMag installation in the world. Within the first three days of start-up, the system was optimized to provide discharge of less than 0.05 mg/L TP on an average daily basis prior to its final polishing magnet. As operation has continued, the system has reached low phosphorus levels at a wide range of flow rates and influent loads. The full-scale system is operating better than anticipated based on pre-design data. The CoMag system has immediately proven its ability to meet Concord's upcoming phosphorus limits as well as the lower limits required in many NPDES permits nationwide, while providing additional benefits relating to a variety of other effluent quality parameters.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864708788733017

Publication date: January 1, 2008

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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