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FREMGANGSMAATE FOR BEHANDLING AV AVLOEPSVANN FRA BLEKET KJEMISK-TERMOMEKANISK MASSE (BCTMP) OG KJEMISK-TERMOMEKANISK MASSE (CTMP)
FREMGANGSMAATE FOR BEHANDLING AV AVLOEPSVANN FRA BLEKET KJEMISK-TERMOMEKANISK MASSE (BCTMP) OG KJEMISK-TERMOMEKANISK MASSE (CTMP)
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机译:漂白化学-热机械通过(BCTMP)和化学-热机械通过(CTMP)处理废水的程序
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摘要
A method of treating BCTMP/CTMP wastewater to improve retention and purification of cellulose fiber suspension and clarification of the BCTMP/CTMP wastewater which comprises the addition of a cationic, water soluble coagulant having a molecular weight less than 15,000,000 in an amount of about 1 to about 300 ppm; and a high molecular weight flocculant selected from the group consisting of: nonionic polymers having a molecular weight in the range between about 500,000 to about 30, 000,000, low charge cationic polymers having a molecular weight in the range between about 5,000,000 to about 30,000,000, and low charge anionic polymers having a molecular weight in the range between about 5,000,000 to about 30,000,000, in an amount of about 0.1 to about 100 ppm.
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