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目的了解莆田市2011—2015年生活饮用水微生物污染状况,为加强饮用水管理措施提供依据。方法定期采集城市饮用水(市政供水的水源水、出厂水、末梢水和二次供水水样)和农村饮用水(集中式供水的出厂水、末梢水、学校自备供水和分散式供水水样),按GB/T 5750-2006进行微生物指标检测和分析。结果 2011—2015年检测水样总合格率为80.2%(2 444/3 049),农村饮用水合格率(56.8%)明显低于城市(97.6%);城市饮用水不合格主要是二次供水,农村4种饮用水类型中,学校自备供水设施水样的合格率最高(78.6%),分散式供水合格率最低(52.8%);农村饮用水丰水期合格率(55.4%)略低于枯水期(58.2%)。结论莆田市2011—2015年生活饮用水存在微生物超标,尤其是农村饮用水微生物污染较严重,应加强监测和监督,以保障城乡饮用水安全。
Objective To understand the status of microbial contamination of drinking water in Putian City from 2011 to 2015, and to provide basis for strengthening drinking water management measures. Methods Collect drinking water (municipal water supply, factory water, peripheral water and secondary water supply) and rural drinking water (centralized water supply, peripheral water, school-owned water supply and decentralized water supply ), According to GB / T 5750-2006 microbial indicators detection and analysis. Results The total qualified rate of water samples tested in 2011-2015 was 80.2% (2 444/3 049), the passing rate of drinking water in rural areas was 56.8%, significantly lower than that of urban areas (97.6%). The unqualified urban drinking water mainly consisted of secondary water supply Among the four types of drinking water in rural areas, the highest passing rate (78.6%) of decentralized water supply was the lowest (52.8%); the passing rate of rural drinking water during the wet season was slightly lower (55.4%) In dry season (58.2%). Conclusion In 2011-2015, drinking water in Putian City exceeded the standard of microorganisms. In particular, the microbial contamination of drinking water in rural areas was more serious. Monitoring and supervision should be strengthened to ensure drinking water safety in urban and rural areas.