2018-2020年安徽省合肥市游泳场所水质分析

Analysis on water quality index swimming pools,Hefei city,An’hui province,2018 to 2020

目的分析2018-2020年安徽省合肥市游泳场所水质合格率及单项指标合格率的城乡和时间分布,为针对性开展游泳场所监管提供依据。方法运用随机抽样的方法,抽取2018-2020年安徽省合肥市9个县(市)区的游泳场所,采样分析游泳池水中细菌总数、大肠菌群、尿素、浑浊度、pH、游离性余氯、浸脚池水余氯7项水质指标。结果2018-2020年安徽省合肥市共有424家游泳场所,检测覆盖率为87.74%,合格率为83.60%。三年检测覆盖率和合格率差异均无统计学意义(P>0.05)。细菌总数、大肠菌群、尿素、浑浊度、pH、浸脚池水余氯7个单项指标三年平均合格率分别为94.35%、97.58%、97.31%、100.00%、99.46%、93.28%、90.93%,浸脚池水余氯三年平均合格率最低,游离性余氯次之。2019年、2020年城区合格率均高于乡村(P<0.05)。城区中,瑶海区在2018年(70.00%)合格率最低,包河区在2019年(53.33%)、2020年(72.50%)合格率最低。尿素、游离性余氯、浸脚池水余氯的三年平均合格率城区高于乡村(P<0.05)。结论2018-2020年安徽省合肥市游泳场所水质不容乐观,城区游泳场所水质优于乡村。

Objective To analyze the urban and rural distribution and time status of qualified rate of water quality in swimming pools and qualified rate of single index in Hefei city,An’hui province during 2018 and 2020,so as to provide the evidence for the targeted supervision of swimming places.Methods The swimming places in 9 counties(cities)of Hefei city,Anhui province from 2018 to 2020 were selected by random sampling method.7 water quality indicators,such as total bacteria,coliform,urea,turbidity,pH,free residual chlorine and residual chlorine in soaking pool water,were sampled and analyzed.SPSS20.0 was used for data analysis.Results There were 424 swimming pools in Hefei city,Anhui province during 2018-2020,with coverage rate of 87.74%and qualified rate of 83.60%.There was no significant difference in the detection coverage rate and qualified rate(P>0.05)during the 3 years.The average qualified rates of total bacteria,coliform group,urea,turbidity,pH and residual chlorine in soaking pool was 94.35%,97.58%,97.31%,100.00%,99.46%,93.28%and 90.93%,respectively.The average qualified rate of residual chlorine in swimming pools was the lowest in the 3 years,followed by free residual chlorine.Between 2019 and 2020,the qualified rate in urban was higher than that in rural,and the difference was statistically significant(P<0.05).Among urban areas,the qualified rate of Yaohai district was the lowest in 2018(70.00%),and that of Baohe district was the lowest in 2019(53.33%)and 2020(72.50%).The 3-year average qualified rate of urea,free residual chlorine and residual chlorine in swimming pool water in cities was higher than that in rural areas,and the difference was statistically significant(P<0.05).Conclusion The water quality of the city’s swimming pools is not optimistic.The water quality of urban swimming pools is better than that of rural pools.