浅析微生物检验技术在生活饮用水监测中的应用

Analysis on the Application of Microbiological Testing Technology in the Monitoring of Drinking Water

目的探究在生活饮用水监测中运用微生物检验技术的价值。方法纳入2017年4月枯水期93份与2017年8月丰水期93份总共186份生活饮用水样本于2017年3月—2018年3月开展研究。所有生活饮用水样本均采用滤膜法检验(研究1组)与多管发酵法检验(研究2组),统计枯水期与丰水期两组微生物检出情况。结果研究2组枯水期大肠埃希菌与耐热大肠菌群检出率分别为94.62%(88/93)、91.40%(85/93),相较于研究1组的79.57%(74/93)、58.06%(54/93)更好;丰水期两组耐热大肠菌群检出率分别为79.57%(74/93)、93.55%(87/93),大肠埃希菌检出率分别为80.65%(75/93)、96.77%(90/93),组间比较差异有统计学意义(P<0.05)。结论该研究中两种微生物检验技术运用于生活饮用水中具有重要意义,多管发酵法相较于滤膜法更佳,更为值得推广。

Objective To explore the value of using microbiological testing techniques in drinking water monitoring.Methods A total of 186 drinking water samples from 93 dry seasons in April 2017 and 93 wet seasons in August 2017 were included in the study from March 2017 to March 2018.All drinking water samples were tested by filter method(study group 1)and multi-tube fermentation method(study group 2),and the microbial detection status of the two groups in the dry and wet seasons was counted.Results The detection rates of Escherichia coli and heat-resistant coliform bacteria in the two groups were 94.62%(88/93)and 91.40%(85/93),respectively,compared with 79.57%(74/93),58.06%(54/93)in the study group was better;the detection rates of heat-resistant coliforms in the two groups during the wet season were 79.57%(74/93)and 93.55%(87/93),respectively.The detection rate of Escherichia coli was respectively 80.65%(75/93),96.77%(90/93),comparison between groups(P<0.05).Conclusion In this study,two microbial testing techniques are of great significance in the application of water in living applications.The multi-tube fermentation method is better than the membrane method and is worthy of promotion.