典型再生水体中细菌含量特征与变化规律  

Content and change pattern of bacteria in typical recycling water

作　　者：王淑京[1] 王多春[1] 阚飙[1] 

机构地区：[1]中国疾病预防控制中心传染病预防控制所传染病预防控制国家重点实验室,北京102206

出　　处：《中国卫生检验杂志》2011年第8期2033-2035,共3页Chinese Journal of Health Laboratory Technology

基　　金：北京市重大科技攻关计划(D0706007040291-05)

摘　　要：目的:分析北京市的3座污水处理厂典型再生水体中,细菌含量特征和变化规律。方法:参考我国《生活饮用水标准检验法(》GB5750-85.37),《中华人民共和国国家标准(》GB/T4789.32-2002),食品卫生微生物学检验中细菌总数、总大肠菌群和耐热大肠杆菌的检测和计数。结果:三座典型污水处理厂的出水和中水中,细菌总数在57～2.4×106 cfu/ml;总大肠菌群MPN介于103～107 cfu/100 ml数量级;耐热大肠杆菌介于102～105 cfu/100 ml数量级。细菌总数、总大肠菌群和耐热大肠杆菌的数量在三座污水处理厂的出水和中水之间无差异。污水处理厂出水口中细菌的每月变化情况不明显。结论:再生水中存在对环境和公众健康的风险,应增加再生水体中微生物的检测指标。Objective：To analyze content and change pattern of bacteria in typical recycling water of 3 sewage treatment plants in Beijing.Methods：Refer to national ＂Standard Test Method of Drinking Water＂（GB5750-85.37）,＂National Standards of PRC＂（GB/T4789.32-2002） as well as ＂detection and count of total bacteria,total coliform and heat-resistant E.coli in Microbiological Examination of Food Hygiene＂ to complete this test.Results：In the samples of effluent and reclaimed water of three typical wastewater treatment plant,the total number of bacteria is 57～2.4×106 cfu/ml;the total E.coli MPN with the orders of magnitude ranged from 103～107 cfu/100 ml;heat-resistant E.coli ranged from102～105 cfu/100 ml of magnitude.The number of total bacteria,total coliform and heat-resistant E.coli were found no difference in effluent and reclaimed water of the three plants.Monthly changes of bacteria at outlet were not obvious.Conclusion：In reclaimed water,with the presence of risks to environment and public health,the microbial detection indicators of reclaimed water should be added.

关 键 词：再生水 细菌 含量 变化 

分 类 号：R123.3[医药卫生—环境卫生学]