WATER TREATMENT SYSTEM, WATER TREATMENT METHOD, COOLING FACILITY AND POWER GENERATING FACILITY

摘要

A water treatment system provided with: a first scale inhibitor-supplying unit which supplies a scale inhibitor to a blowdown water, the blowdown water being water to be treated that is generated in a cooling tower and contains at least a salt and silica; a first pH-adjusting unit which adjusts the pH of the blowdown water, to which the scale inhibitor has been supplied using a pH adjusting agent; a first desalinating apparatus which is provided downstream of the first pH-adjusting unit, removes the salt in the blowdown water, and separates the water into a first reclaimed water and a first concentrated water; and a first crystallizing unit which is provided downstream of the first desalinating apparatus and has a first crystallizing tank for calcium sulfate from the first concentrated water and a first seed crystal-supplying unit for supplying calcium sulfate seed crystals of calcium sulfate to the first crystallizing tank.