Case Study
Case Study: King George County WWTP Incorporates New Technologies And Process Optimization For Effective Phosphorus And Nitrogen Removal
The King George County Wastewater Treatment Plant in Dahlgren, Virgina discharges into a tributary of the Potomac River that eventually empties into the Chesapeake Bay. In anticipation of ever-increasing ENR discharge limits, the King George Service Authority recognized the need to further optimize its total nitrogen (TN) and total phosphorus (TP) removal to meet "significant discharge" nutrient poundage caps. Its annual nutrient discharge poundage allocation is 12 mg/L TN and 0.3 mg/L TP in effluent at current flow. While the plant was meeting the acceptable 12 mg/L limit, lower discharge levels were desired. Additionally, the plant was losing process efficiency due to over-aerating the reactor.
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