5种不同类型饮用水水质检测及分析.pdf

分析检测 Analysis and Testing doi:10.16736/j.cnki.cn41-1434/ts.2022.01.050 5 种不同类型饮用水水质检测及分析 Detection and Analysis of Five Different Types of Drinking Water Quality ◎ 闫杨娟，杨倩霞，莫镜池，何佳艳 （祥云县综合检验检测院，云南 祥云 672100 ） YAN Yangjuan, YANG Qianxia, MO Jingchi, HE Jiayan (Xiangyun County Comprehensive Inspection and Testing Institute, Xiangyun　672100, China) 摘　要： 5 pH 15 6 关键词： Abstract ： Objective: Through the detection of microorganisms and physical and chemical indicators, to compare and analyze the water quality of different types of water before and after purification, so as to provide a reference for residents to choose reasonable and healthy drinking water. Method: Five kinds of water with different treatment methods were tested for microbiological and physical and chemical indicators. The specific items are total number of colonies 、total coliforms 、 thermotolerant coliform bacteria 、 Escherichia coli 、 pH 、 total dissolved solids 、 total hardness, arsenic 、 mercury 、 lead 、 cadmium 、 sulfate, chloride 、 fluoride and nitrate. Result: The 15 indicators of tap water and purified tap water are all qualified; there are 6 indicators of well water that are unqualified, namely total number of colonies, total coliforms, Escherichia coli, thermotolerant coliform, total solubility solids and total hardness; aerobic plate count in well water and direct drinking water after purification is unqualified. Conclusion: The quality of the well water is poor, contaminated by feces, and the water hardness is high. The quality of purified water is better, but secondary pollution should be prevented in the process of purification and transportation. On the premise that the water quality meets the standard requirements, people can drink tap water, purified water, direct drinking water, and cool boiled water