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目的了解2013年郑州市管城回族区二次供水卫生状况,为加强二次供水卫生监督管理工作提供依据。方法按《生活饮用水卫生标准》(2001)和《二次供水设施卫生规范》(GB17501-1997)及《生活饮用水水质卫生标准》(GB5479-2006)对管城区二次供水卫生状况深入现场调查并采取二次供水水质样品进行卫生检测和评价;结果调查管城区共有二次供水设施30个,各项检查指标均符和要求的2个,多数供水单位卫生管理不到位;检测二次供水水质样品30份,各项指标全部合格的18份,合格率为60.00%。每份水样检测27项指标,合计检测780项次,合格740项次,合格率为94.87%。主要不合格的项目为游离余氯、浑浊度、耗氧量、氨氮、亚硝酸盐氮。结论水质检测合格率比较高与二次供水系统多是新开发建造使用有关,但需加强卫生管理及供水设施消毒环节的监督,尤其是居民小区的二次供水的监管力度,加大供管水人员的培训力度,争取全面覆盖,保障供水安全。
Objective To understand the status of secondary water supply in Guancheng Hui nationality area in 2013 and provide basis for strengthening secondary supervision and management of water supply. Methods According to the standards of Sanitary Standard for Drinking-water (2001) and Sanitary Standards for Secondary Water Supply Facilities (GB17501-1997) and Sanitary Standard for Drinking-water Quality (GB5479-2006), the secondary sanitation of Guancheng District was deeply investigated In the investigation, there were 30 secondary water supply facilities in Guancheng District, with all the inspection indicators conforming to and required 2, and most of the water supply units were not in good sanitary management; testing secondary water supply 30 samples of water quality, all the 18 indicators of qualified, pass rate of 60.00%. Each water sample test 27 indicators, a total of 780 tests, 740 qualified times, with a pass rate of 94.87%. Major unqualified items are free residual chlorine, turbidity, oxygen consumption, ammonia nitrogen, nitrite nitrogen. Conclusion The relatively high qualified rate of water quality test is related to the newly developed water supply and drainage system. However, it is necessary to supervise the hygiene management and disinfection of water supply facilities, especially for the secondary water supply in residential areas, Personnel training efforts for full coverage, to protect water supply security.