2019年—2021年平顶山市区生活饮用水耗氧量监测结果分析  

Monitoring and analysis of oxygen consumption of drinking water in urban area of Pingdingshan City from 2019 to 2021

作　　者：薛洪滨 王海霞 XUE Hong-bin;WANG Hai-xia(Pingdingshan Municipal Center for Disease Control and Prevention,Henan 467000,China)

机构地区：[1]平顶山市疾病预防控制中心,河南467000

出　　处：《中国卫生检验杂志》2023年第1期102-103,106,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的 了解2019年—2021年平顶山市区生活饮用水中耗氧量在年度、丰枯水期、水源类型水样中耗氧量的变化特点。方法 对2019年—2021年305份水样耗氧量测定资料进行分类整理,采用非参数检验进行结果比对。结果 3年中水样耗氧量合格率为99.67%,中位数为2.050 mg/L,各年份间耗氧量水平差异有统计学意义(H=36.683,P<0.05)。丰水期耗氧量值高于枯水期,丰水期、枯水期的耗氧量分布差异有统计学意义(H=13.666,P<0.05)。二次供水的耗氧量最高,为2.190 mg/L,出厂水最低,为1.390 mg/L,不同类型水样之间耗氧量比较差异有统计学意义(H=46.186,P<0.05)。结论 平顶山市区生活饮用水耗氧量整体处于较好水平,但仍存在一定问题,需要区别情况加以治理。Objective This paper aims to assess the oxygen consumption variations in drinking water annually, in wet and dry seasons and in different water sources in Pingdingshan City from 2019 to 2021. Methods The oxygen consumption data of 305 water samples from 2019 to 2021 were classified and sorted, and the results were compared by non-parametric test. Results The qualified rate of oxygen consumption of the water samples in three years was 99.67%, and the median was 2.050 mg/L. There was statistical significance on the differences in the oxygen consumption level among different years(H=36.683, P<0.05). The oxygen consumption in wet season was higher than that in dry season, and there was statistical significance on the difference of oxygen consumption distribution between wet season and dry season(H=13.666, P<0.05). The oxygen consumption of secondary water supply was the highest(2.190 mg/L) while that of tape water was the lowest(1.390 mg/L). The difference of oxygen consumption among different water sources was statistically significant(H=46.186, P<0.05). Conclusion The oxygen consumption of drinking water in the urban area of Pingdingshan was generally in an appropriate state, but there were still some problems that need to be treated according to different situations.

关 键 词：耗氧量 生活饮用水 水质监测 

分 类 号：R123.1[医药卫生—环境卫生学]