Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Fluidized Bed Clarification as Applied to Wastewater Treatment.
Author Orcut, John C. ;
CORP Author Research Triangle Inst., Durham, N.C.
Year Published 1972
Report Number DI-14-12-912; EPA-17030-EYA; 06037,; R2-72-032
Stock Number PB-216 604
Additional Subjects ( Sewage treatment ; Coagulation) ; ( Sludge ; Precipitation(Chemistry)) ; ( Clarification ; sewage treatment) ; Flocculation ; Thickening ; Settling ; Aluminum sulfate ; Iron chlorides ; Silicon dioxide ; Process variables ; Alums ; Separation ; Colloids ; Phosphorus ; Chemical removal(Sewage treatment) ; Sludge treatment ; Sludge blanket clarification
Library Call Number Additional Info Location Last
NTIS  PB-216 604 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 100p
An experimental study of the application of a fluidized sludge blanket clarifier to the coagulation and separation of wastewater solids was made to determine the effects of controlled process variables on the treatment achieved. Experiments using alum and ferric chloride coagulants were carried out in 12- and 24-inch diameter columns by systematic variation of wastewater pH, coagulant dose, upflow fluid velocity, and blanket depth. The results were analyzed using regression analysis techniques and empirical relationships were derived relating the variables to the removal of suspended solids, total organic carbon, phosphorus, and coagulant metal ions. The sludge production rate was also correlated empirically with the operating variables. Both alum and ferric chloride were found to be effective coagulants. The sludge blanket acted as an efficient clarifier up to at least 15 ft/hr superficial velocity, although best removal efficiencies were achieved at lower rates. (Author Modified Abstract)