纯培养条件下细菌需氯量和存活性的试验研究  

Experiment of chlorine demand and survival of bacteria in pure cultural conditions

作　　者：李荣光[1] 何文杰[1,2] 韩宏大[2] 孙星凡[3] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]天津自来水集团有限公司,天津300040 [3]北京桑德环保集团有限公司,北京101102

出　　处：《供水技术》2011年第6期12-15,共4页Water Technology

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07420-005)

摘　　要：以埃希氏大肠杆菌和粪肠球菌作为研究对象,在纯培养条件下考察了自由氯、氯胺和二氧化氯的投加量以及细菌初始浓度对需氯量的影响。结果表明:灭活率达到99.9%时,两种细菌的需氯量均随初始菌浓度和消毒剂投加量的提高而增大,粪肠球菌的需氯量大于埃希氏大肠杆菌;投加自由氯时两种细菌的需氯量差别最大,其次是二氧化氯,氯胺的差别最小。The effects of free chlorine, chloramine and chlorine dioxide dosage and initial concentrations of E. coli and Enterococcus faecalis on chlorine demand were investigated under pure cultural condition. The results indicated that the chlorine demand to kill the two kinds of bacteria was increased with the initial bacteria concentration and the disinfectant dosage when the inactivation rate reached 99.9% , the chlorine demand for Enterococcus faecalis was higher than E. coll. The maximum difference of chlorine demand for the two kinds of bacteria was observed when it was dosed by free chlorine, then it was chlorine dioxide. The minimum difference when it was dosed by chloramine.

关 键 词：埃希氏大肠杆菌 粪肠球菌 需氯量 存活率 

分 类 号：TU991.25[建筑科学—市政工程]