Method of dewatering sewage sludge particularly on recessed plat

Details Method of dewatering sewage sludge particularly on recessed plat Method of dewatering sewage sludge particularly on recessed plat

1987-09-03

1989-08-29

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210710, 210727, 210734, 210745, C02F 1114

Patent

active

048614920

ABSTRACT:
Method for dewatering sewage sludge with the aid of organic polymeric flocculating agents (polyelectrolytes) made preferably by emulsion polymerization. To obtain optimum dewatering results, a substantial amount of the aqueous phase of the sludge is removed by decantation after flocculant addition prior to the dewatering treatment proper. The flocculated and thickened sludge may then be dewatered much more quickly with the dewatering behavior improved additionally by causing a reactivating flocculation to take place on the delivery side of the sludge feed pump. The Figures show a preferred embodiment of the inventive sludge dewatering system using a recessed plate press.

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