SETT ATT INOM PAPPERS-, MASSA- OCH BOARDINDUSTRIN FORBETTRA RETENTION ELLER RENING AV CELLULOSAFIBERSUSPENSIONER RESP AVLOPPSVATTEN

摘要

Retention and purification of fiber suspensions or waste water from the paper, pulp and fiberboard industry are improved by treatment with phenol formaldehyde resin, high-molecular polyethylene oxide and cationic starch derivatives or cationic cellulose derivatives.