Patent ID: 6416213
Filing Date: 2002-07-09
Classification: B01D,B01F,C02F

Abstract:
A coagulating/condensing device comprising a liquid supplying unit for supplying a liquid being treated containing fine particles, and a solid-liquid separation unit disposed in a lower position than the liquid supplying unit, the liquid supplying unit comprising a delivering chamber for delivering a liquid being treated, and a liquid dispersing chamber, and wherein a spiral mixing pipe for permitting a liquid from the liquid dispersing chamber to flow down therethrough and an amount increasing pipe for supplying from the delivering chamber a liquid being treated are joined together at a merging portion disposed downstream, a spiral injection pipe with an opening facing downstream is provided in the spiral mixing pipe, two liquids at different electric potentials supplied separately to the spiral mixing pipe and the spiral injection pipe are caused to contact with each other at the opening to form a floc-containing liquid, and the floc-containing liquid is further made to mix with the liquid being treated at the merging portion downstream of the amount increasing pipe to be made a mass-floc.