filterhjelpmedel for enrichment of suspensions, particularly of municipal, industrial, and other efterfoljande for sludge dewatering

摘要

A method for the draining of sludges utilizing a filter aid composed of a mixture of porous organic materials capable of absorbing large amounts of liquid to absorb the sludge particles and a ballast liquid containing particles larger than the sludge particles is disclosed. The filtering aid prevents the redissolving of the sludge particles normally observed in chemical flocculation and chemical contamination of the agent.