Record Display for the EPA National Library Catalog


Main Title Biological Removal of Colloidal Matter from Wastewater.
Author Maie, Walter J. ;
CORP Author Minnesota Univ., Minneapolis.
Year Published 1973
Report Number EPA-17030-DGQ; 13984,; R2-73-147
Stock Number PB-223 136
Additional Subjects ( Organic wastes ; Sewage treatment) ; Colloids ; Starch ; Glucose ; Proteins ; Performance evaluation ; Activated sludge process ; Flow rate ; Slime ; Films ; Reaction kinetics ; Mass transfer ; Enzymes ; Film flow reactors
Library Call Number Additional Info Location Last
NTIS  PB-223 136 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 180p
The research program was designed to provide a more basic understanding of the mechanism and rates of removal of organic materials from waste waters by biological processes. Pure compound feed materials were used with the exception of a series of tests on sewage solids obtained from the Minneapolis-St. Paul Sewage Treatment Plant by centrifugation of primary effluent. Two model reactor systems were used to measure rates of substrate removal. The film flow reactor, characterized by a stationary biological slime layer, was used to study removal kinetics under conditions where mass transfer may be a limiting factor. A well mixed batch reactor was used to study rates of removal under conditions where biological processes are rate controlling. Rates of substrate degradation and carbon removal are reported for each of the pure compounds using acclimated innoculum. Rate data from batch reactors are expressed in terms of microbial growth rate coefficients. Rate data from the film flow reactor is reported as the quantity of substrate removed per unit of slime surface per unit of time.