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液氮冻融破碎生物污泥制备生物絮凝剂

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Indexed by:期刊论文

Date of Publication:2013-02-22

Journal:环境工程

Included Journals:PKU、ISTIC、CSCD

Volume:31

Issue:1

Page Number:126-129

ISSN No.:1000-8942

Key Words:剩余生物污泥;生物絮凝剂;液氮;冻融破碎

Abstract:利用城市剩余生物污泥,采用液氮冻融破碎、提取液提取的方法制备了生物污泥絮凝剂.对絮凝剂的制备条件及其絮凝性能进行了研究,结果表明:采用液氮冻融破碎,pH为1.0的稀盐酸溶液作为提取液提取所制备的絮凝剂,对高岭土悬浮液的絮凝效率可达98.5%.液氮冻融破碎的次数对絮凝剂制备没有明显影响.同时考察了絮凝剂投加量以及絮凝体系的pH对絮凝剂絮凝活性的影响.

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