【摘要】 目的了解《生活饮用水卫生标准》(GB 5749—2006)于2007年实施以来广州市市政饮用水水质全分析卫生状况。方法依照国家标准进行抽样和检测,整理分析2008年-2014年广州市市政饮用水全分析监测结果。结果市政饮用水全分析合格率仅为64.8%,出厂水主要不合格项目为氨氮,管网水主要不合格项目为氨氮、菌落总数和耗氧量,二次供水主要不合格项目为游离余氯,水质非常规指标不合格项次数高于常规项目。2011年-2014年市政出厂水和管网水全分析合格率(94.9%)高于2008年-2010年(22.5%),差异有统计学意义(P<0.01)。采用水源W和常规净水工艺的市政水厂出厂水全分析合格率在2011年前后差异均有统计学意义(P<0.05)。结论广州市2011年前市政饮用水全分析合格率较低,2011年-2014年市政饮用水合格率较高,水源水的水质是出厂水水质的重要影响因素。更多还原

【Abstract】 Objective To learn the sanitary from all items inspection of municipal drinking water in Guangzhou since the implement of Standards for Drinking Water Quality( GB 5749—2006) in 2007. Methods Sampling detection was conducted according to the national standards; and the all items inspection results of municipal drinking water during 2008- 2014 were collected and analyzed. Results The qualified rate of all items inspection in municipal drinking water was 64. 8%. The main unqualified item of the finished water was ammonia nitrogen,while that of the pipe water supply were ammonia nitrogen,aerobic bacterial count and chemical oxygen demand,and the main unqualified items of second water was residual chlorine. The frequency of unqualified item of non- regular indices was higher than that of regular indices. The qualified rate of all items inspection in municipal drinking water from both the finished water and pipe network water during 2011- 2014( 94. 9%) was significant higher than that of those during 2008- 2010( 22. 5%),and the difference was statistically significant( P < 0. 01). There was statistical significance on the difference between before and after the 2011 in the qualified rate of all item inspection in municipal drinking water from the source water of W and conventional water purification system( P < 0. 05). Conclusion Before2011 in Guangzhou,the qualified rate of all item inspection in municipal drinking water is lower,while during 2011- 2014,the qualified rate of that is higher. The quality of raw water is very important influence factor for the quality of the finished water.更多还原