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中文摘要: 摘要：目的：了解三峡库区万州段消落带居民饮用水水质情况，为保护人群健康和饮水安全提供技术支持。方法:于2013-2015年（一期）与2017-2020年（二期）2月（枯水期）、5月（平水期）、8月（丰水期）对三峡库区万州段消落带11家水厂517件水样监测结果进行评价,分析消落带居民饮用水不安全因素。结果:监测水样合格率47.78%。一期水样合格率42.27%，二期水样合格率51.85%，两者差异有统计学意义（χ2 ＝4.65 P＜0.05 ）。枯水期水样合格率51.52%，平水期水样合格率40.91%，丰水期水样合格率51.14%，三者差异无统计学意义（χ2 ＝5.05 P＞0.05 ）。水源水、出厂水、末梢水样合格率分别为35.35%、54.55%、57.03%，三种水样前五位不合格指标分别为（1）总氮、粪大肠菌群、总磷、铁、硫酸盐;（2）游离余氯、总大肠菌群、耐热大肠菌群、三氯甲烷、铝;（3）铝、总大肠菌群、三氯甲烷、耐热大肠菌群、游离余氯。结论：三峡库区万州段消落带居民饮用水水质合格率低，水厂水源水近四层富营养化且存在粪便、铁、硫酸盐等污染，相当部分出厂水与末梢水游离余氯、总大肠菌群、耐热大肠菌群、三氯甲烷、铝等不合格，饮水安全存在隐患。
中文关键词: 关键词 三峡库区 消落带 居民饮水 水质监测
Abstract:Abstract: Objective: To evaluate the drinking water quality of residents in Wanzhou section of the Three Gorges Reservoir area, and to provide technical support for the protection of human health and drinking water safety. Methods: In February (low water period), May (normal water period) and August (high water period) of 2013-2015 (phase I) and 2017-2020 (phase II), we evaluated the results of 517 water samples monitored from 11 water plants in Wanzhou section of the Three Gorges Reservoir area, and analyzed the unsafe drinking water factors of residents in the area.Results: The qualified rate of water sample was 47.78%.The qualified rate of phase I and phase II samples was 42.27% and 51.85% respectively, with statistically significant difference (χ2 ＝4.65，P＜0.05).The qualified rate of water samples in low water period was 51.52%, while the rate in normal water period was 40.91% and in high water period was 51.14%. The difference was not statistically significant (χ2＝5.05，P>0.05).The qualified rate of source water, factory water and terminal water samples was 35.35%, 54.55% and 57.03% respectively. The top five unqualified indexes of the three water samples were (1) total nitrogen, fecal coliform group, total phosphorus, iron and sulfate. (2) Free residual chlorine, total coliform, heat-resistant coliform, trichloromethane, aluminum;(3) Aluminum, total coliform, trichloromethane, heat-resistant coliform, free residual chlorine.Conclusion: The drinking water quality qualified rate in Wanzhou section of the Three Gorges Reservoir area is low. There are nearly four-layer eutrophication in source water, the pollution of iron, sulfate and excrement. The indexes such as free residual chlorine, total coliforms, heat-resistant coliform bacteria, chloroform, aluminum are unqualified of several off-work water and pipe water. There are hidden dangers in drinking water safety in this area.
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文章编号：3202012023 中图分类号：R155.3 文献标志码：
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