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为了探讨北京农村地区饮用水中病原细菌的污染特征,2008年9月~2009年12月对该地区居民饮用水中的细菌总数、耐热大肠菌群和总大肠菌群3项细菌学指标进行了检测。结果表明:水样中细菌总数、总大肠菌群、耐热大肠菌群的数量均存在超标现象,平均超限值百分率分别为5.67%,80.77%和25.00%。分散式供水的3项细菌学指标的超标率均高于集中式供水。不同水源类型微生物指标超标率由高到低依次为山泉水、浅井水、深井水。不同取水方式中,微生物指标超标率由高到低依次为手压泵取水、机器取水、缸内储水。由此得出,农村居民饮用水细菌指数均有超标,存在着不同程度的污染,应采取相应措施,使农村饮用水微生物学指标合格。
In order to explore the characteristics of the contamination of pathogenic bacteria in drinking water in rural areas of Beijing, from September 2008 to December 2009, the total number of bacteria, heat-resistant coliform bacteria and total coliform bacteria The test. The results showed that the total number of bacteria, total coliforms and heat-resistant coliform bacteria were over-standard in water samples with the average over-limit percentages of 5.67%, 80.77% and 25.00%, respectively. The exceeding standard rate of three bacteriological indexes of distributed water supply was higher than that of centralized water supply. Different types of water exceeded the standard microbial indicators from high to low mountain spring water, shallow well water, deep well water. Different ways of taking water, microbial indicators of excessive rate of descending order followed by hand-pressure pump to take water, the machine to take water, water storage tank. It is concluded that the bacterial index of drinking water for rural residents are over standard, there are different levels of pollution, measures should be taken to make the indicators of rural drinking water microbiology qualified.