TREATING METHOD FOR CHLOROFORM FORMED IN BLEACHING PROCESS STEP OF CHEMICAL PULP FOR PAPER MAKING

摘要

PROBLEM TO BE SOLVED: To provide a method for decreasing the amount of chloroform generated in a bleaching process step by curtailing the amount of hypochlorite which is a chloroform generating source to be used while maintaining a low cost and pulp quality in a chemical pulp bleaching process step for paper making. SOLUTION: Hydrogen peroxide is added to the waste bleaching water containing the chloroform discharged in the bleaching process step of the chemical pulp for paper making.