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Springettsbury Township BNR Pilot Program

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Springettsbury Township, York County, Pennsylvania is permitted to treat 15.0 MGD from nine municipalities in the greater York, Pennsylvania region. Though upgraded in the late 1980's as a result of an inter-municipal cooperation, the plant will soon approach its limits for adequate removal of nutrients such as phosphorus and nitrogen. Although not required by its NPDES permit, the Township took a proactive approach for the removal of nutrients from its effluent. A plan was proposed to conduct a pilot plant study utilizing biological nutrient reduction technology to reduce nitrogen by up to 500,000 pounds annually. A proposal was successfully submitted and in the year 2004 the Township was the recipient of a Growing Greener State Grant for the purpose of funding the Biological Nutrient Removal (BNR) pilot program project.

Staff members from the Springettsbury Township Regional Treatment Facility, Buchart-Horn, Inc., Kruger, Inc. and Godwin Pumps of America, Inc. combined their skills and experience to conduct a two-month full-scale pilot plant test in winter of 2005. The process was modeled after the successful pilot plant test conducted at the City of Lancaster, Pennsylvania, Waste Water Treatment Plant, with the only difference being the Lancaster plant was a Pure Oxygen Activated Sludge Process. The remaining principles are unchanged. A major decision for the Springettsbury Township BNR Pilot Program's team members was to which type of activated-sludge denitrification system, between pre-anoxic or post-anoxic, was more appropriate for the Springettsbury Township Regional Treatment Facility. The ability to use the existing infrastructure guided the decision for the pre-anoxic denitrification system.

The objective of the Springettsbury BNR Pilot Program was to determine if the Township could efficiently remove additional nitrogen, measured as total nitrogen, without incurring the expense of building additional storage tanks. This presentation will address the results and conclusion of the Springettsbury BNR Pilot Program conducted at the Springettsbury Township Regional Treatment Facility.
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Document Type: Research Article

Publication date: 2005-01-01

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