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Method for removing humic substances from an aqueous alkaline solution
Method for removing humic substances from an aqueous alkaline solution
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机译:从碱性水溶液中去除腐殖质的方法
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摘要
A method for removing humic substances comprising lignin, other lignin type compounds and their disintegration products from an aqueous alkaline waste water from a bleaching of chemical pulp, which method comprises —obtaining an aqueous alkaline waste water comprising humic substances such as dissolved lignin, and —adding a high cationic starch having a charge density value of at least 1.8 meq/g dry matter of starch derivates determined at pH 7-7.5 to the alkaline waste water to precipitate humic substances.
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