论文部分内容阅读
目的及时掌握松滋市农村居民生活饮用水水质状况。方法 2010—2012年对全市农村集中式供水点在丰水期和枯水期分别采集出厂水和末梢水各1份,按照GB/T 5750-2006检测色度、浑浊度等20个常规指标。结果2010—2012年共采集水样360份,合格200份,总合格率为55.6%,3年合格率分别为43.3%、54.2%和69.2%,呈逐渐上升趋势;枯水期总合格率(57.8%)与丰水期(53.3%)差异无统计学意义。微生物指标不合格率最高,其中总大肠菌群41.4%,菌落总数36.1%,耐热大肠菌群21.1%;其次为感官指标,浑浊度不合格率17.2%,肉眼可见物11.7%;色度、臭和味、pH值、氟化物、砷、硝酸盐氮、氯化物、硫酸盐、溶解性总固体、余氯或二氧化氯合格率均为100%。结论应做好水源防护,不断完善水厂水处理工艺,加强净化消毒工作,提高全民饮水安全意识。
Objective To grasp the status of drinking water quality of rural residents in Songzi City in time. Methods From 2010 to 2012, a total of 20 samples of factory water and peripheral water were collected from rural centralized water supply points in wet season and dry season respectively. Twenty standard indexes such as colorimetric and turbidity were tested in accordance with GB / T 5750-2006. Results A total of 360 water samples were collected from 2010 to 2012, with a total passing rate of 55.6% and a passing rate of 55.6%. The three-year pass rates were 43.3%, 54.2% and 69.2% respectively, showing a gradual upward trend. The total passing rate in the dry season was 57.8% ) And wet period (53.3%), the difference was not statistically significant. Microbiological indicators of the highest failure rate, of which 41.4% of the total coliforms, the total number of colonies 36.1%, heat-resistant coliforms 21.1%; followed by the sensory indicators, turbidity failure rate of 17.2%, 11.7% visible macroscopic; Odor and taste, pH, fluoride, arsenic, nitrate nitrogen, chloride, sulfate, total dissolved solids, residual chlorine or chlorine dioxide pass rate of 100%. Conclusion Water source protection should be well done, and the water treatment technology of the waterworks should be constantly improved, the purification and disinfection work should be intensified, and the safety awareness of drinking water should be enhanced.