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目的分析深圳市南山区2008—2010年市政管网末梢水水质状况,探讨水质在不同年度、季节中的变化规律,为改善南山区饮水质量提出建议。方法对南山区2008—2010年市政管网末梢水水质监测资料进行统计分析,按照《生活饮用水卫生标准》、《生活饮用水标准检验方法》进行检验和评价。结果 3年共检测管网末梢水816份,合格696份,总合格率为85.3%;水质监测指标项次数合格率为97.1%(8 121/8 360)。各年水样合格率分别为80.5%(214/266)、84.8%(196/231)、89.7%(286/319),合格率呈逐年上升趋势(P(0.01);丰水期和枯水期水质监测合格率分别为84.4%(260/308)、87.2%(204/234),差异无统计学意义(P>0.05);合格率最低的指标是耐热大肠菌群(94.3%),其次是菌落总数(94.8%)和锰(94.5%)。结论深圳市南山区市政管网末梢水水质卫生质量逐年有所提高,但还需进一步加强水质卫生监测和管理,防止水污染事件的发生。
Objective To analyze the water quality of the municipal pipe network in Nanshan District of Shenzhen City from 2008 to 2010, discuss the variation regularity of water quality in different years and seasons, and put forward suggestions to improve the quality of drinking water in Nanshan District. Methods The data of municipal water quality monitoring of municipal pipe network in Nanshan District from 2008 to 2010 were statistically analyzed and tested and evaluated in accordance with the standards of Sanitary Standard for Drinking Water and Standard Test Method for Domestic Drinking Water. Results A total of 816 pieces of water were collected from the pipe network in the last 3 years, 696 were qualified. The total qualified rate was 85.3%. The passing rate of water quality monitoring indicators was 97.1% (8 121/8 360). The qualified rates of water samples in each year were 80.5% (214/266), 84.8% (196/231) and 89.7% (286/319), respectively. The pass rate showed an upward trend year by year (P <0.01) The qualified rate of monitoring was 84.4% (260/308) and 87.2% (204/234) respectively, with no significant difference (P> 0.05). The lowest qualified rate was heat-resistant coliforms (94.3%), followed by (94.8%) and manganese (94.5%) .CONCLUSIONS The hygiene quality of peripheral water quality of municipal pipe network in Nanshan District, Shenzhen increased year by year, but the monitoring and management of water quality hygiene needs to be further strengthened to prevent the occurrence of water pollution incidents.