青浦区出厂水中总硬度和溶解性总固体分析
Analysis on Total Hardness and Total Dissolved Solids of Finished Water in Qingpu District
胡洁兰 1姚新民 1沈燕 1陈云1
作者信息
- 1. 上海市青浦区疾病预防控制中心,上海 201799
- 折叠
摘要
目的:了解青浦区出厂水中总硬度和溶解性总固体水平,为改善饮用水水质提供科学依据.方法:对 2014-2022年青浦区市政水厂出厂水总硬度和溶解性总固体进行统计分析.结果:294份水样中,总硬度中位数为127 mg·L-1,溶解性总固体中位数为278 mg·L-1,合格率为100%.趋势性检验发现,两指标在2014-2022 年均呈下降趋势(Rs=-0.357,P＜0.01;Rs=-0.374,P＜0.01).3 家水厂出厂水的总硬度均在枯水期、平水期和丰水期依次下降(P＜0.05).比较不同水源,以淀山湖水系为水源的出厂水中溶解性总固体高于以青草沙水库为水源的出厂水(P＜0.05).结论:青浦区出厂水口感好,但总硬度略低,建议居民增加钙镁的摄入.
Abstract
Objective:To study the contents of total hardness and total dissolved solids in finished water of water plants in Qingpu district,and to provide support for the improvement of drinking water quality.Method:Collect the testing results of total hardness and total dissolved solids of finished water from 2014 to 2022 for analysis.Result:294 samples of finished water were collected.The median total hardness was 127 mg·L-1,and the median total dissolved solids was 278 mg·L-1,the qualification rate is 100%.Statistical analysis showed that the two items had a downward trend from 2014 to 2022(Rs=-0.375,P＜0.01;Rs=-0.375,P＜0.01).By comparison,total hardness of finished water from three water plants descended sequentially from low water season,usual water season to abundant water season(P＜0.05).Finished water from Dianshan lake has higher total dissolved solids than that from Qingcaosha reservoir(P＜0.05).Conclusion:Finished water in Qingpu district has good taste,but the total hardness level is a little low.It is suggested that local residents increase their intake of calcium and magnesium.
关键词
出厂水/总硬度/溶解性总固体/水质Key words
finished water/total hardness/total dissolved solids/water quality引用本文复制引用
出版年
2024
NETL
NSTL
万方数据