论文部分内容阅读
目的了解张家口市宣化区二次供水水质卫生状况,为加强二次供水卫生管理提供科学依据。方法根据《生活饮用水卫生标准》(GB 5749-2006)对2011-2013年辖区内二次供水的检测结果进行评价分析。结果 2011-2013年共检测二次供水水样183份,合格167份,合格率为92.3%。各年度二次供水合格率分别为87.5%、91.9%、93.8%,差异无统计学意义(P>0.05)。所检项目中,不合格的主要为余氯、菌落总数、总大肠菌群,差异有统计学意义(P<0.005)。结论张家口市宣化区二次供水合格率较高,但仍存在污染风险,应继续加强卫生监督管理,提高二次供水的卫生质量。
Objective To understand the status of secondary water supply and sanitation in Xuanhua District of Zhangjiakou City and to provide a scientific basis for strengthening secondary water supply and sanitation management. Methods According to the “drinking water health standards” (GB 5749-2006) on the 2011-2013 area of secondary water supply test results were evaluated. Results A total of 183 secondary water samples were tested from 2011 to 2013, with 167 qualified ones, with a pass rate of 92.3%. The annual secondary water supply pass rates were 87.5%, 91.9% and 93.8% respectively, with no significant difference (P> 0.05). The seized items, the main unqualified residual chlorine, the total number of colonies, total coliform bacteria, the difference was statistically significant (P <0.005). Conclusion The qualified rate of secondary water supply in Xuanhua District of Zhangjiakou City is high, but there is still the risk of pollution. Health supervision and management should be strengthened to improve the quality of secondary water supply.