Advanced wastewater treatment facilities at Washington D.C.'s Blue Plains plant are being expanded and upgraded to provide increased capacity. In order to continue meeting the very stringent discharge limitations, modifications will be made to the secondary and nitrification activated sludge systems, wastewater filters, disinfection system, and plant instrumentation. Major upgrades are planned for sludge processing including construction of centrifuge and filter press dewatering facilities, mechanical composting and fluid bed incineration.

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