摘要
目的了解广州市白云区生活饮用水水质卫生状况，为改善饮用水水质提供依据。方法按照《生活饮用水标准检验方法》（GB／T5750—2006）进行水样的采集和检测，按照（GB／T5749—2006）《生活饮用水卫生标准》进行水样的评价。结果2009-2012年共检测水样1503份，合格1107份，总合格率为73．65％。各年合格率依次为76．66％、75．15％、70．78％、70．90％，差异无统计学意义（X^2=4．844，P〉0．05）。各类生活饮用水中合格率由高到低为末稍水（87．31％）、二次供水（77．20％）、深井水（57．67％）、出厂水（51．69％）、山泉水（41．67％）、水源水（31．96％），差异有统计学意义（x。=219．3，P〈0．01）；不同检测项目中合格率由低到高依次为氨氮（67．48％）、pH值（80．34％）、菌落总数（84．30％）、锰（92．98％）、总大肠菌群（93．41％）、浑浊度（93．45％）、游离余氯（93．70％），其他检测项目合格率介于95％～100％之间。结论广州市白云区生活饮用水水质合格率偏低，超标项目主要为氨氮、pH值、锰、菌落总数、浑浊度、游离余氯等指标，今后需加强对饮用水的卫生监测，水源水的保护和治理是改善饮用水水质的关键。
[ Objective]To understand the sanitary conditions of drinking water in Baiyun District of Guangzhou City, provide the basis for improving the drinking water quality. [ Methods ] The water samples were collected and detected according to the Standard examination methods for drinking water （ GB/T 5750-2006 ）, and were evaluated according to the Drinking water sanitary standard （GB/T 5749-2006 ）. [ Results ] A total of 1503 water samples were detected during 2009-2012, and 1107 were qualified with the qualified rate of 73.65%. The annual qualified rate was respectively 76.66%, 75.15%, 70.78% and 70.90%, and the difference was not statistically significant （ X^2 = 4. 844, P 〉 0.05 ）. The qualified rate of peripheral water was the highest （ 87.31% ）, followed by secondary water supply （77.20%） , deep well water （57.67% } , product water （51, 69% } , mountain spring water （41.67%） and source water （31.96%）, and the difference was not statistically significant （X^2 =219.3, P 〈0.01 ）. As for the monitored items, the qualified rates in a descending sort were as follows： ammonia and nitrogen 167. 48% ）, pH value （80.34 % ） ,total bacterial count （ 84.30% ）, manganese （92. 98% ）, total coliform bacteria colony （93.41%）, turbidity （93.45%）, free residual chlorine （93.70%）. The qualified rates of other items were between 95% and 100%. [ Conclusion] The qualified rate of drinking water is low in Baiyun District of Guangzhou City, and the unqualified items are mainly the ammonia and nitrogen, pH value, manganese, total bacterial count, turbidity and free residual chlorine. In the future, it is necessary to strengthen the health monitoring, and focus on protection and governance of source to improve the drinking water quality.
出处
《职业与健康》
CAS
2014年第13期1821-1822,1825,共3页
Occupation and Health
关键词
生活饮用水
水质
卫生状况
Drinking water
Water quality
Sanitary conditions
