A method for treating wastewater BCTMP and CTMP.

摘要

PRESENTS A METHOD FOR TREATING WASTEWATER BCTMP / CTMP to improve retention and purification SUSPENSION OF FIBER PULP AND CLARIFY THE WASTEWATER BCTMP / CTMP, the method comprising adding a coagulant CATIONIC WATERSOLUBLE HAVE A WEIGHT MOLECULAR LESS THAN 15,000,000 in an amount of from 1 to 300 ppm; And a flocculant high molecular weight selected from the group consisting of: nonionic polymers having a molecular weight in the range of about 500,000 to 30,000,000, low charge cationic polymers having a molecular weight in the range of about 5,000 .000 And 30,000,000, and low charge anionic polymers having a molecular weight in the range of about 5,000,000 to 30,000,000, in an amount of between 0.1 and 100 ppm.