SOLID-LIQUID SEPARATION METHOD HAVING DECOLORING FUNCTION OF TREATED WATER IN SEPTIC TANK AND APPARATUS FOR EXECUTING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a solid-liquid separation system which adopts a more convenient solid-liquid separation method and has a decoloring function of treated water in a septic tank.;SOLUTION: The solid-liquid separation method having the decoloring function of the treated water in the septic tank undergoes a first reaction step in which iron (II) polysulfate is added to cause reaction, a second reaction step in which an organic flocculant is added, a step of executing a first step of solid-liquid separation in a first sedimentation tank and a step of executing a second step of solid-liquid separation in a second sedimentation tank. Precipitate is fluidized by a low speed stirring wing near an outlet which is provided at a bottom of the first sedimentation tank and discharges solid content.;COPYRIGHT: (C)2012,JPO&INPIT