聚合氯化铝复配絮凝剂的絮凝性能  

Flocculation Performance of Composite Flocculants of Poly Aluminum Chloride(PAC)with Potassium Permanganate(KMnO_4) and Manganese Dioxide(MnO_2)

作　　者：叶挺进[1,2] 何君[1] 张丽[1] 梁咏梅[1] 刘伟[1] 

机构地区：[1]中山大学环境科学与工程学院,广东广州510275 [2]佛山市水业集团有限公司,广东佛山528000

出　　处：《净水技术》2010年第6期51-56,共6页Water Purification Technology

基　　金：广东省产学研专项资金项目(2009B090300369);佛山市禅城区产学研专项资金项目(2009B1042)

摘　　要：选用聚合氯化铝（PAC）和KMnO4、MnO2进行复配处理微污染水。考察了复配比例、复配成分、反应时间对絮凝效果的影响以及絮凝沉降性能。试验结果表明：KMnO4、MnO2与PAC具有极好的复配效果,复配后浊度及有机碳总量（TOC）去除率进一步提高,絮凝沉降性能也得到改善。在浊度去除方面,要达到92.33%的去除率,复配絮凝剂比单独投加PAC节省36.8%的投加量。在TOC去除方面,单独投加15 mg/L的PAC仅能达到17.2%的去除率,而投加15.8 mg/L的复配絮凝剂则能达到47.6%的去除率。在絮凝沉降性能方面,当浊度去除要求相同时,复配絮凝剂可缩短27%~50%的反应时间。Composite flocculant of PAC,KMnO4 and MnO2 was applied to treatment of micro-polluted water.The dosage of each flocculant and ratios of them and reaction time on flocculation performance were investigated.The results show that turbidity and total oxygen demand（TOC） removal can be further improved with addition of KMnO4 and MnO2 when PAC is used as main flocculant.As turbidity removal is concerned,92.33 % removal efficiency is obtained with saving of 36.8 % PAC dosage.The removal efficiency of TOC is 17.2 % when 15 mg / L PAC is used alone,whereas 42.6 % removal efficiency is obtained with composite flocculant of PAC,KMnO4 and MnO2 and the flocculation time may be shortened by 27 %~50 %.

关 键 词：聚合氯化铝 复配絮凝剂 微污染水 

分 类 号：X522[环境科学与工程—环境工程]