AN ISOTOPIC INVESTIGATION OF THE EFFECT OF LAND APPLICATION OF STABILIZED SEWAGE SLUDGE ON THE QUALITY OF GROUNDWATER IN THE GREAT MIAMI RIVER BASIN: A CASE STUDY AT THE TRI-CITIES NORTH REGIONAL WASTEWATER AUTHORITY'S WASTEWATER TREATMENT PLANT NEAR DAYTON, OHIO
Anaerobically digested sludge from the TCA wastewater treatment plant is land applied, as a fertilizer, on TCA's dedicated sludge farms. This study was undertaken to investigate the possibility of this land applied sludge as a potential source of high nitrate concentrations in the groundwater. Analysis of nitrogen isotopes in nitrate in the groundwater samples demonstrated that commercial chemical fertilizers, as opposed to digested sludge, was responsible for the elevated levels of nitrate.
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Document Type: Research Article
Publication date: 01 January 2005
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