摘要
隐孢子虫通过城市供排水系统的传播给饮用水安全带来了直接威胁,引起了各国广泛的关注,但传统的混凝、沉淀、过滤和加氯消毒工艺对隐孢子虫的去除效果有限。本文对目前对可有效杀灭隐孢子虫的紫外、臭氧和二氧化氯消毒方法的研究现状进行综述,对其特性、杀灭效果和应用特点进行评述。并介绍了氯、臭氧、氯胺和二氧化氯间的协同作用,指出在只使用一种消毒剂的情况下,臭氧消毒和二氧化氯消毒是适合水厂使用的控制隐孢子虫的消毒工艺;而同时使用几种消毒剂,可在较低的剂量下获得很好的效果。本文结论对于污染突发事件的应急处理及和给水厂的工艺改造具有重要的指导意义。
Cryptosporidium spreading through water - borne in supply and drainage system has become threat to the security of drinking water great directly. The problem of cryptosporidium has attracted world wide attention. The traditional drinking water treatment processes including coagulation, precipitation, filtration and free chlorine disinfection couldnt remove cryptosporidium oocysts effectively ,while the effective capability on myptosporidium oocysts removing of UV, O3 and ClO2 has been proved out. The researches status of UV, O3 and ClO2 removal cryptosporidium oocysts are summarized, and the reaction charactels, the disinfection effect and application features are discussed here. The synergistic effects of Cl2 , O3 , chloramine and ClO2 are also introduced. The conclusion is that if only one disinfection used , O3 and ClO2 is applicable in the drinking water treatment,while better effect can be get under low dosage when several disinfection is used together,which has important meaning of guidance in the sporadic pollution accidents emergency treatment and the modification of drinking water plants.
出处
《世界科技研究与发展》
CSCD
2008年第4期426-429,共4页
World Sci-Tech R&D
基金
国家"863"计划课题(2006AA06Z309)
关键词
隐孢子虫
杀灭
给水处理
Cryptosporidium
inactivation
drinking water treatment
