深圳市宝安区游泳池水中三氯甲烷浓度及影响因素分析

刘庆成; 赵凌国; 夏挺松; 吴志强; 曾艳萍; 王熙; 何育玲; 潘海珊; 林嘉军

doi:10.19428/j.cnki.sjpm.2021.19866

深圳市宝安区游泳池水中三氯甲烷浓度及影响因素分析

Analysis on the concentration of chloroform and risk factors of swimming pools in Bao’an District of Shenzhen City

摘要

摘要:
目的了解广东省深圳市宝安区游泳池水中三氯甲烷的水平，分析其影响因素。
方法2019年5—7月选择宝安区新安街道取得卫生许可证并正常开放的40家游泳场所的110份泳池水进行卫生学和三氯甲烷检测，同时在游泳池入水口采集游泳池原水38份，检测三氯甲烷和游离性余氯，并对结果进行统计分析。共抽检40个游泳场所，原水均为市政供自来水，且均采用含氯消毒剂进行消毒。
结果游泳池水中三氯甲烷浓度为（43.400±27.802）μg/L，中位数为37.343 μg/L；经Pearson相关分析，泳池水中三氯甲烷浓度与细菌总数呈正相关（P<0.05），与浑浊度、游离性余氯和pH值也呈明显正相关（P<0.01）。
结论深圳市宝安区游泳池水质消毒水平有待提高，需进一步探索游泳池水中三氯甲烷等消毒副产物（DPBs）的影响因素，从而控制DPBs的浓度。

Abstract:
ObjectiveTo investigate the concentration level of chloroform in the water of swimming pool in Baoan District of Shenzhen City，and determine the risk factors.
MethodsDuring May and July，2019，a total of 110 water samples from 40 swimming pools were collected in Xin’an subdistrict of Bao’an District for the examination of chloroform routine indicators. In addition， 38 pipe water samples were collected for the examination of chloroform and free residual chlorine．
ResultsThe concentration of chloroform in the swimming pools was determined to be （43.400±27.802） μg/L with the median of 37.343 μg/L. Chloroform was correlated positively with total bacterial count（P<0.05），turbidity， free chlorine residual， and PH value（P<0.01）.
ConclusionThe disinfection quality of swimming pool water in Bao’an District remains low. It is necessary to determine the risk factors associated with chloroform in the swimming pool and further reduce the concentration level of disinfection by-products.

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