Record Display for the EPA National Library Catalog


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
Library Call Number Additional Info Location Last
NTIS  PB-213 778 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 59p
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)