2008年山东省不同地区城市二次供水水箱消毒管理状况调查

目的]了解山东省城市二次供水消毒箱管理情况,寻找各地区间的差异,对今后二次供水水箱消毒管理提出建议。方法]2008年,在山东省16个城市（青岛除外）抽取部分供水单位,对二次供水管理状况进行调查。结果]调查314家二次供水单位的水箱275个,定期消毒的占97.45%,消毒时有记录的占93.09%,消毒后使用前检查水质的占73.45%;日常检测水质的占45.45%,定期检测水质的占91.27%,检测水质有记录的占91.27%;水质消毒使用液氯、漂白粉、氯胺、次氯酸钠、二氧化氯、臭氧、紫外线的分别占8.36%、37.45%、1.09%、10.55%、22.55%、9.09%、1.45%。东部、中部、西部水箱定期消毒、消毒时有记录、消毒后使用前检查水质者所占比例的差异,日常检测水质、定期检测水质、检测水质时有记录者所占比例的差异均有统计学意义（P〈0.01）;水质消毒使用最多的东部地区是二氧化氯（占46.47%）,中部地区和西部地区都是漂白粉（分别占38.03%和43.55%）。结论]山东省的东、中、西部地区二次供水水质管理总体上不平衡。

Investigation on Water Tank Disinfection and Management of Secondary Water Supply in Different Regions of Shandong Province in 2008

Objective]To understand the status of disinfection and management of secondary water supply system,find out the differences indifferent regions,and give suggestion on disinfection and management of the water tank of second water supply in the future.Methods]Investigation on the status of second water supply was conducted for some water supply units selected from 16 cities in Shandong province（except Qingdao） in 2008.Results]Of the 275 water tanks from 314 secondary water supply units,regular disinfection accounted for 97.45%,disinfection record accounted for 93.09%,water quality test after disinfection and before use accounted for 73.45%,routine water quality test accounted for 45.45%,regular water quality test accounted for 91.27%,record of water quality test accounted for 91.27%.Disinfection with liquid chlorine,bleaching powder,chloramine,sodium hypochlorite,chlorine dioxide,ozone,UV accounted for 8.36%,37.45%,1.09%,10.55%,22.55%,9.09% and 1.45% respectively.There was a difference of the data mentioned above in second water supply in eastern,central and western regions（P〈0.01）.Water disinfection with chlorine dioxide accounted for 46.47% in eastern region,bleaching powder accounted for 38.03% and 43.55% respectively in central and western regions.Conclusion]Water quality management of secondary water supply in eastern,central and western parts of Shandong province was imbalance.