Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Use of Chlorine for the Correction of Sludge Bulking in the Activated Sludge Process.
Author Smit, Russell S. ; Purd, W. C. ;
CORP Author Public Health Service, Cincinnati, Ohio. Stream Pollution Investigations Station.
Year Published 1935
Stock Number PB-218 169
Additional Subjects ( Sewage treatment ; Microorganism control(Sewage)) ; ( Fungi ; Microorganism control(Sewage)) ; ( Chlorination ; Microorganism control(Sewage)) ;
Library Call Number Additional Info Location Last
NTIS  PB-218 169 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 16p
The efficiency of many activated sludge sewage treatment plants is materially affected at times by a diffuse or fluffy condition of the sludge particles, which, in the clarification tank following aeration, results in slow settlement and hence increased volume or 'bulking' of the sludge. Consequently, in aggravated cases large amounts of these sludge solids may be carried over the effluent weirs instead of being removed through the bottom sludge outlets. The report discusses a method of control involving the addition of some material in a concentration toxic to the fungus but not to the other microscopic organisms normal to proper functioning activated sludge.