作　　者： ; ; ; ;

机构地区： 湖南大学土木工程学院

出　　处： 《湖南大学学报（自然科学版）》 2006年第4期31-35,共5页

摘　　要： 通过测量Zeta电位、界面沉降性能及比阻,对应用高分子絮凝剂、表面活性剂、石灰、酸和碱进行水厂排泥水的化学调质处理效果进行了研究.结果表明:有机高分子絮凝剂对污泥的调质效果明显优于无机絮凝剂,且调质效果随絮凝剂相对分子质量的增大而加强;阳离子型表面活性剂十六烷基三甲基氯化铵(CTAC)调质对污泥处理有促进作用而阴离子型表面活性剂十二烷基硫酸钠(SDS)却有负面影响;投加石灰能有效地降低污泥比阻(SRF),但对污泥沉淀无明显改善且增加了泥饼干重;污泥的沉淀和脱水性能随pH值的降低而改善. The chemical conditioning of water treatment plant sludge using polymer flocculants, surfactants, lime, acids and bases was investigated by measuring the sludge＇s Zeta potential, sedimentation properties and specific resistance to filtration （SRF）. Results showed that organic polymer flocculants were much better than inorganic ones on sludge conditioning, and the larger the molecular weight of the flocculants, the more effective the flocculants. It was found that cationic surfactant CTAC had positive effects while anionic surfactant SDS had negative effects on the sludge conditioning. The addition of lime efficiently reduced the sludge＇ s SRF but did not significantly improve the sludge＇s sedimentation. The settlement and dewatering of the sludge were enhanced with the decrease of the pH value.

关 键 词： 污泥 化学调质 脱水 比阻

领　　域： [环境科学与工程]