Gongye shui chuli以玉米淀粉（St）为原料，环氧氯丙烷（EPI）为交联剂，甲基丙烯酰氧乙基三甲基氯化铵（DMC）为接枝单体，两步法合成了接枝交联双重改性淀粉基絮凝剂IStD。测试了投药量、pH、高岭土质量分数、絮凝温度和絮凝时间对IStD絮凝性能的影响。结果表明，当高岭土质量分数为2%，投药质量浓度为14 mg/L，pH=7，絮凝温度为25 ℃，絮凝时间为1 h时，上清液的透光率可达91.7%。通过观察投药前后水体中高岭土颗粒的分散状态，初步探讨了IStD的絮凝机理。结果表明在絮凝过程中，同时存在电中和与吸附架桥作用 ...
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