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THE HIGHEST LEVEL OF PHOSPHORUS REMOVAL PRACTICABLE FROM MUNICIPAL WASTEWATER TREATMENT PLANTS

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Abstract:

This paper presents results of eleven (11) full-scale plant data on the reliability and efficiency of various phosphorus removal technologies. A selection of process options are offered that can be used to comply with a range of NPDES permit limits. They include biological phosphorus removal with or without chemical addition; chemical treatment at multiple application points, both with and without filtration; and a new membrane process with chemical addition. A discharge permit limit for phosphorus concentration below 0.1 mg/l has been achieved with a combination of chemical addition, followed by filtration and land application.

For a new phosphorous limit of 0.03 mg/l, pilot testing has shown that the target can be achieved by two-step chemical coagulation, followed by a new filtration process. A full-scale demonstration is recommended for generating reliability and efficiency data.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864701790864953

Publication date: 2001-01-01

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