应对高藻水源水的粉末活性炭吸附预处理研究  

Study on PAC Pretreatment of High-algae Source Water

作　　者：刘成[1,2] 李俊林[2] 陈卫[2] 王嫚[2] 

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098

出　　处：《中国给水排水》2012年第1期52-55,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07421-002);国家自然科学基金资助项目(50908073)

摘　　要：针对高藻期水源水存在的水质问题,结合其水质特点,利用小试和中试结合的方法研究应对高藻水源水的粉末活性炭吸附预处理技术,具体包括优选最佳的活性炭种类、确定相应的应用方案、分析其处理效能。研究结果表明,用于高藻期水源水处理的最佳粉末活性炭应该具有相对较发达的中孔和微孔,同时具有一定含量的含氧官能团;活性炭的投加量应在15 mg/L以上,并保证有30 min以上的接触时间,同时适当增加混凝剂的使用量,此时对微囊藻毒素、土臭素、2-MIB的去除率分别为90%、86%、93%,还可在一定程度上改善混凝沉淀单元对藻类的去除率,维持滤池的正常运行;使用粉末活性炭预处理时,应尽量避免与预氧化工艺组合使用,如果的确需要组合使用,两工艺应间隔适当的距离。Based on the problem and character of source water quality in high algae period, laboratory and pilot test were used to study the powdered activated carbon （PAC） pretreatment process used for high-algae source water, including the selection of optimal PAC kind, determination of corresponding application scheme and analysis of the treatment efficiency. The study results show that the best PAC for treatment of high-algae source water should have developed mesopore, micropores and a certain number of oxygen-containing functional groups. The PAC dosage should be more than 15 mg/L, with a contact time of 30 rain and an appropriate dosage of coagulant. Under these conditions, the removal rates of microcystin, geosmin and 2-MIB are 90%, 86% and 93% respectively. The removal rate of algae in coagulation and sedimentation units can be improved to some extent, and the normal operation of filters can be maintained. When PAC is used in the pretreatment, pre-oxidation process should be avoided. If indeed need, a certain distance should be kept between the adding point of PAC and pre-oxidation.

关 键 词：高藻水源水 粉末活性炭 应急处理 

分 类 号：TU991.2[建筑科学—市政工程]