天然淀粉改性絮凝剂的应用研究进展

Research Progress of Flocculants Modified by Natural Starch

化学絮凝法是将絮凝剂加入废水中,使水中的悬浮物颗粒或者胶体凝聚产生絮凝体,从废水中分离而去除污染物,使废水水质净化的技术,是一种经济实用、操作简便、效果明显的污水处理技术。天然高分子絮凝剂因具有无机絮凝剂和合成有机高分子絮凝剂不具备的优点而越来越受到人们重视,尤其是天然淀粉具有来源广、价格低、无毒、可生物降解等优点,在絮凝剂的开发利用方面得到广泛关注。综述了改性淀粉絮凝剂的研究进展,并对其应用前景作了展望。

Flocculation is a kind of technique with putting flocculants into the waste water, to make the suspended matter and colloid flocculate into floc so as to separate from the water, as a result the waste water can be purified. It is an economic and practical, easy operation and effective technique. Natural polymer flocculants get more and more attention for the distinctive advantages which the inorganic flocculants as well as the syn-thetic polymer ones don’t have. Especially natural starch get more and more attention for the advantages of wide source material, low price, non-toxic,biodegradable and so on. The paper summarized the research progress of modified starch flocculant, and made a forecast expectation.