Record Display for the EPA National Library Catalog


Main Title Electroosmotic Pumping for Dewatering Sewage Sludge.
Author Greyso, Jerome ;
CORP Author Rocketdyne, Canoga Park, Calif.
Year Published 1970
Report Number FWQA-14-12-568; FWQA-17070-EHE; 05385,; 17070-EHE-07/70
Stock Number PB-197 889
Additional Subjects ( Sludge disposal ; Dewatering) ; ( Sewage treatment ; Sludge disposal) ; ( Electroosmosis ; Sludge disposal) ; Pumps ; Membranes ; Electrodes ; Cost estimates ; Zeta potential ; Surfactants ; Water flow ;
Library Call Number Additional Info Location Last
NTIS  PB-197 889 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 70p
An experimental program was conducted to determine equipment configurations for efficient solids removal, identification of critical parameters involved in the efficiency of electroosmotic pumping, and the design and testing of two prototype electroosmotic pumps. It was determined that electroosmosis can be applied to dewatering waste sludges of various types. For efficient dewatering from very wet sludge (2%) to burnable solids, it is necessary to orient the pumping apparatus with a cathode screen beneath the anode so that an initial sludge film can be formed by gravity settling at the cathode surface. Sludge cannot be thickened to a solids level exceeding 20% if the cake is beneath the liquid level of the sludge suspension and for drying beyond the 20% value, the cake must be brought out of the liquid. (WRSIC abstract)