Record Display for the EPA National Library Catalog
RECORD NUMBER: 242 OF 293
| OLS Field Name | OLS Field Data | |||||||||||
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| Main Title | Three Sludge System for Nitrogen and Phosphorus Removal. | |||||||||||
| Author | Mulbarge, M. C. ; | |||||||||||
| CORP Author | Environmental Protection Agency, Cincinnati, Ohio. Advanced Waste Treatment Research Lab. | |||||||||||
| Year Published | 1972 | |||||||||||
| Stock Number | PB-213 778 | |||||||||||
| Additional Subjects | ( Sewage treatment ; Chemical removal(Sewage treatment)) ; ( Nitrogen inorganic compounds ; Chemical removal(Sewage treatment)) ; ( Phosphorus inorganic compounds ; Chemical removal(Sewage treatment)) ; Nitrification ; Activated sludge process ; Alums ; Nutrients ; Precipitation(Chemistry) ; pH control ; Biochemical oxygen demand ; Methyl alcohol ; Suspended sediments ; Process variables ; Performance evaluation ; Denitrification ; Chemical oxygen demand | |||||||||||
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| Collation | 59p | |||||||||||
| Abstract | Three sludge (carbon removal, nitrification and denitrification) system with alum addition for phosphorus removal was evaluated. Eight months of performance data from a 0.2 mgd pilot plant, operating with diurnal flow variations over a nominal liquid temperature range of 10 to 20C, are presented. Performance data for the soluble phase (COD, nitrogen and phosphorus), solids phase (solids characterizations and unit solids production values) and miscellaneous considerations (temperature, pH, alkalinity depletion, etc.) are also presented. Split chemical treatment with alum and optimum pH values will result in optimum system performance and the least amount of precipitated inorganic solids. Soluble phosphorus residuals as low as 0.1 mg/l can be easily achieved with an additional inorganic solids production of about 40 to 60 mg/l. (Author) |