COAGULANT FOR PURIFYING WATER, WATER PURIFYING METHOD AND WATER PURIFYING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a coagulant to remove the large quantity of an organic acid in a wastewater at high speed. SOLUTION: An ion bond 7 comprising a water soluble high polymer 6 having organic acid 5 and amino group is formed by adding a water soluble high polymer 6 having the amino group in the wastewater containing the organic acid 5. Next, an ion bond 9 comprising carboxyl group of a water soluble high polymer 8 having carboxyl and the amino group of a water soluble high polymer 6 having the amino group by adding the water soluble high polymer 8 having carboxyl group. As a result, the organic acid is deposited as a trapped coagulate 10. The coagulate 10 formed by trapping the organic acid is separated by being passed through a filtration tank. COPYRIGHT: (C)2010,JPO&INPIT