摘要
目的了解2008-2015年广州市分质供水水质的卫生状况,为监督管理等提供科学依据。方法收集2008-2015年广州市各分质供水站的水质监测数据进行统计分析。结果 2008-2015年采集1 959份水样中17.15%存在超标现象,水源水耗氧量、浊度、锰、铁和细菌总数的超标率(7.66%、6.89%、4.29%、1.84%和17.15%)高于处理后(5.67%、0.77%、0.46%、0.00%和5.67%),差异均有统计学意义(P<0.05);2011-2015年水源水的细菌超标率(19.40%、13.58%、1.27%、6.85%和2.50%)与2010年(40.66%)相比下降,且差异有统计学意义(P<0.05)。2008-2015年末梢水的铅超标率均高于水源水和处理水(P<0.05),且超标的样品主要来自天河区,占超标总数的62.86%。结论市政水经过深度处理后各理化指标的不超标率普遍上升。但管网末梢水的铅超标率均高于水源水和处理水,应加强分质供水管道的预防性卫生审查。
Objective To understand the sanitary condition of the water quality of dual water supply from 2008 to 2015 in Guangzhou,and provide the scientific dependence for inspection. Methods A number of indexes of water quality of raw water,treating water,tap water were surveyed and analyzed from 2008 to 2015 in Guangzhou. Results 1 959 water samples were collected from 2008 to 2015,17. 15% are exceed the standard phenomenon,water consumption rate exceed the standard oxygen,turbidity,iron and manganese,the total number of bacteria（ 7. 66%,6. 89%,4. 29%,1. 84% and 17. 15%） was higher than that after treatment（ 5. 67%,0. 77%,0. 46%,0. 00% and 5. 67%）,the differences were statistically significant（ P 0. 05）;2011-2015 water bacteria exceed the standard rate（ 19. 40%,13. 58%,1. 27%,6. 85% and 2. 50%） and 2010（ 40. 66%）decreased,and the difference was statistically significant（ P 〈0. 05）. 2008-2015,lead exceeded the standard water exceeded the source water and treatment water（ P〈 0. 05）,and exceeded the sample mainly from Tianhe District,accounting for 62. 86%of the total number of excess. Conclusion After the municipal water treatment,the physical and chemical indicators of the general rate of increase. However,the standard exceeding ratios of lead in the peripheral water of pipeline network is higher than that of source water and treated water.
出处
《医学动物防制》
2017年第9期949-951,955,共4页
Journal of Medical Pest Control
基金
广州市医药卫生科技项目(20151A011054)
广州市医学重点学科建设项目(2017-2019-07)
关键词
分质供水
卫生状况
监测
Dual water supply
Sanitary condition
Surveillance
