Record Display for the EPA National Library Catalog

RECORD NUMBER: 182 OF 284

OLS Field Name OLS Field Data
Main Title Optimal Conditioning Procedures for Waste Activated Sludge Disposal.
Author Randal, Clifford W. ;
CORP Author Virginia Polytechnic Inst. and State Univ., Blacksburg. Dept. of Civil Engineering.
Year Published 1972
Report Number DI-14-31-0001-3547; OWRR-A-035-VA; 02616,; A-035-VA(7)
Stock Number PB-213 494
Additional Subjects ( Sludge disposal ; Optimization) ; ( Activated sludge process ; Sludge disposal) ; ( Sewage treatment ; Sludge disposal) ; Sludge digestion ; Sludge drying ; Dewatering ; Aerobic processes ; Chlorination ; Disinfection ; Filtration ; Sludge treatment
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-213 494 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 39p
Abstract
Waste activated sludge from three full-scale wastewater treatment plants was subjected to laboratory-scale sludge handling and dewatering procedures in a series of experiments designed to evaluate the effect of commonly used techniques on dewater-ability and to define the mechanisms responsible for changes in dewaterability. The results showed that the techniques used to handle waste activated sludge can have a drastic effect on the subsequent rate of dewatering. For optimum dewatering, the sludge organisms must be maintained in a viable, aerobic condition and metabolic activity must occur. The conditioning effects of synthetic polymers are strongly affected by handling techniques. Changes in the median particle size of the sludge floc strongly affects specific resistance and the compressibility factor. (Author)