Organicity sludge disposal manner

摘要

PPROBLEM TO BE SOLVED: To provide an organic sludge treatment method in which in vacuum precoat filtration, a precoat agent is fully obtained without supplying a carbonated material from outside, therefore the precoat is produced, in so-called "closed state", from only the carbonated material obtained by treatment of organic sludge, the treated carbonated material is used as a valuable material which does not contain metal, etc., and also a load due to drying-carbonation treatment is reduced to lower fuel consumption. PSOLUTION: Permeation of a filtration cake into the precoat agent is lowered by dehydration pretreatment in which water impact is applied to destroy the cell membrane of a microorganism, and the vacuum precoat filtration by a small amount of precoat agents is carried out. The carbonated material obtained by the treatment of organic sludge is crushed and classified to produce a sufficient amount of precoat agents. PCOPYRIGHT: (C)2011,JPO&INPIT