A COAGULANT FOR USE OF WATER PURIFICATION AND A WATER PURIFYING METHOD AND A WATER PURIFYING APPARATUS WITH APPLYING THE SAME

摘要

A coagulant for removing or extracting a large amount or volume of organic acid in wastewater at high speed, a water-soluble polymer having an amino group is added into the wastewater containing the organic acid therein, thereby producing an ionic bond built up with the organic acid and the water-soluble polymer having an amino group. Next, with addition of a water-soluble polymer having carboxyl group, an ionic bond is built up with the carboxyl group of the water-soluble polymer having carboxyl group and the amino group of water-soluble polymer having an amino group. With this, the organic acid is precipitated as an aggregate. The aggregate trapping the organic acid is separated when it passes through a filtering tank.