农村污水阳离子聚丙烯酰胺强化絮凝研究  

Study of Rural Wastewater Enhanced Flocculation by CAPM

作　　者：刘海龙[1] 付晶淼 郭雪峰[1] 

机构地区：[1]山西大学环境与资源学院,山西太原030006

出　　处：《水处理技术》2016年第9期37-40,共4页Technology of Water Treatment

基　　金：国家自然科学基金项目(51179099/E090301);山西省科技攻关项目(20110321021-01;20140313003-3);山西省留学回国人员科技活动择优资助项目(2014);山西省回国留学人员科研资助项目(2015-004);山西省重点研发计划项目(201603D321007)

摘　　要：利用差异紫外吸收等方法研究了阳离子聚丙烯酰胺(CPAM)的强化絮凝特征,以及温度、p H、水力条件等对絮凝分离效果的影响;并研究了强化絮凝对除磷、脱氮等后续生物处理效果的影响。结果表明,CPAM对颗粒物去除效果较好,浊度去除率达到90%以上;对污水中的有机物也有较好的去除作用,但脱氮除磷效果不足。CPAM投量为0.3 mg/L时,总氮(TN)、总磷(TP)去除率仅为12%和15.86%。当投量达到对浊度的最佳去除效果后,增加CPAM投量并不能明显的提升有机物去除率。CPAM_3对构成UV_(250)附近吸收的有机物有较强的去除效果,可能提升沉后水可生化性。对比单纯的生物处理,前置强化絮凝对后续的生物脱氮除磷有明显的促进作用。Effects of cationic polyacrylamide （CPAM） on the enhanced flocculation characteristics, and factors involving in separation efficiency such as temperature, pH and hydraulic conditions were studied by methods of UV-Vis spectrum. Influence ofabove pre-separation on downstream biological treatment about removing nitrogen and phosphorus was investigated. Results show that CPAM exhibited better efficiencies for particulates removal, and turbidity removal reached above 90%. Ithadafairlygoodremovaloforganicmatter, while it had poor removal efficiencies ofnitrogen and phosphate, 12% for TN and 15.86% for TP respectively when CPAM dose was 0.3 mg/L. There was an optimum dosage of CPAM in the flocculation process. Significant improvement of organic removal was not observed with additional CPAM dosing beyond the optimum dose. CPAM could effectively remove organic with absorbance near UV250, which might enhance the biodegradability. Comparing to single biological treatment, preset enhanced flocculation showed remarkable improvement on denitrification and phosphate removal.

关 键 词：阳离子聚丙烯酰胺 强化絮凝 絮凝剂 污水处理 

分 类 号：X703.1[环境科学与工程—环境工程] TQ314.253[化学工程—高聚物工业]