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目的了解溧阳市农村饮用水水质状况及其影响因素。方法分别于2009~2014年每年的枯水期和丰水期,采集12个监测点出厂水和末梢水进行水样检测,并根据饮用水水质监测结果进行统计分析。结果 2009~2014年检测水样294份,合格226份,合格率为76.87%,各年合格率分别为56.25%、58.33%、75.00%、89.58%、89.58%、90.74%(P<0.05)。检测项目6 468项次,合格6 362项次,合格率为98.36%,不合格项目包括浑浊度、余氯、菌落总数、耐热大肠菌群、耗氧量、氨氮、肉眼可见物。合格率丰水期(82.67%)高于枯水期(70.83%)(P<0.05)。大中型水厂(77.78%)高于小型水厂(75.00%)(P>0.05),出厂水(77.78%)高于末梢水(76.00%)(P>0.05)。结论溧阳市农村饮用水水质整体状况较好。
Objective To understand the quality of drinking water in rural Liyang City and its influencing factors. Methods Water samples were collected from factory and peripheral water at 12 monitoring points in dry season and wet season every year from 2009 to 2014 respectively. Statistical analysis was conducted based on monitoring results of drinking water quality. Results A total of 294 water samples were obtained from 2009 to 2014, with 226 qualified ones. The pass rate was 76.87%. The passing rates in each year were 56.25%, 58.33%, 75.00%, 89.58%, 89.58% and 90.74%, respectively. Test items 6 468 times, passing 6 362 times, with a pass rate of 98.36%, unqualified items include turbidity, residual chlorine, colony, heat-resistant coliform bacteria, oxygen consumption, ammonia nitrogen, macroscopic. The pass rate of wet season (82.67%) was higher than that of dry season (70.83%) (P <0.05). Large and medium-sized water plants (77.78%) were higher than small water plants (75.00%) (P> 0.05), and factory water (77.78%) was higher than that of peripheral water (76.00%) (P> 0.05). Conclusion The overall quality of drinking water in rural areas in Liyang City is good.