Record Display for the EPA National Library Catalog


Main Title Microbiological Characterization of Activated Sludge in a Wastewater Treatment Plant Chemically Modified for Phosphorous Removal.
Author Un, Richard F. ;
CORP Author Pennsylvania State Univ., University Park. Inst. for Research on Land and Water Resources.
Year Published 1971
Report Number DI-14-31-0001-3238; OWRR-A-018-PA; 09654,; A-018-PA(1)
Stock Number PB-210 157
Additional Subjects ( Sewage treatment ; Chemical removal(Sewage treatment)) ; ( Chemical removal(Sewage treatment) ; Phosphorus) ; ( Microbiology ; Activated sludge process) ; Precipitation(Chemistry) ; Aluminum sulfates ; Aeration ; Lagoons(Ponds) ; Microorganisms ; Flocculating ; Aeration ponds
Library Call Number Additional Info Location Last
NTIS  PB-210 157 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 33p
Combined chemical-biological wastewater treatment for simultaneous removal of organic matter and phosphorous is being attempted on a limited basis in full scale wastewater treatment plants. The study describes the first investigation involving the microbiology of a full scale combined chemical-biological wastewater treatment plant. One of the aeration basins was dosed with aluminum sulfate for the purpose of phosphorous removal. The other aeration basin (control) was operated in the conventional manner without alum addition. Results suggest the aluminum flocs formed in the chemical-biological treatment enmesh dispersed wastewater microorganisms, some of which are qualitatively unlike those indigenous to natural activated sludge.