论文部分内容阅读
[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。
[Objective] To understand the management of secondary water supply disinfection chamber in Shandong Province, find the differences among different regions and make recommendations for the disinfection management of secondary water supply tanks in future. [Method] In 2008, some water supply units were drawn from 16 cities in Shandong Province (except Qingdao) to investigate the secondary water supply management. [Results] A total of 275 water tanks of 314 secondary water supply units were investigated, accounting for 97.45% of the total, of 93.4% of them being disinfected, 73.45% of their water quality before disinfection, 45.45% of their daily water quality, 91.27% of the water was regularly inspected and 91.27% of the tested water was recorded. The quality of disinfectants used for disinfection of water was 8.36%, 37.45%, 1.09% and 10.55 respectively for liquid chlorine, bleach, chloramine, sodium hypochlorite, chlorine dioxide, ozone and ultraviolet %, 22.55%, 9.09%, 1.45%. Eastern, central and western water tanks disinfected regularly, when disinfected there is a record, disinfection before the use of water quality differences in the proportion of users, routine testing of water quality, regular testing of water quality, water quality testing were recorded when the proportion of differences were statistically (P <0.01). Chlorine dioxide (46.47%) was the most used water disinfection in the east and bleaching powder was 38.03% and 43.55% respectively in the central and western regions. [Conclusion] The water quality management of secondary water supply in east, middle and west of Shandong Province is generally unbalanced.