论文部分内容阅读
目的了解无锡市农村地区饮用水卫生状况,为改善农村饮水提供科学依据。方法 2009-2011年对无锡市农村饮用水进行监测,按照GB5749-2006规定的方法进行检测和评价。结果 2009-2011年无锡市农村饮用水合格率呈上升趋势,不合格项目为浑浊度、菌落总数、氨氮、耗氧量、锰。液氯和二氧化氯消毒效果优于漂白粉消毒,以江河水为水源的水质优于以水库水为水源的。结论应进一步加大小水厂制水工艺的改进,提高水质合格率。
Objective To understand the sanitary status of drinking water in rural areas of Wuxi and provide scientific basis for improving rural drinking water. Methods From 2009 to 2011, Wuxi rural drinking water was monitored and tested and evaluated according to the method specified in GB5749-2006. Results The passing rate of drinking water in rural areas of Wuxi in 2009-2011 showed an upward trend. The unqualified items were turbidity, total number of colonies, ammonia nitrogen, oxygen consumption and manganese. The disinfection effect of liquid chlorine and chlorine dioxide is better than the bleaching powder disinfection. The water quality of river water is better than that of reservoir water. Conclusion It is necessary to further increase the improvement of the water system for small waterworks and improve the qualified rate of water quality.