硫酸根和总硬度微超标水源饮用水处理方案分析

Case analysis of treatment process for sulfate radical, total hardness overproof in drinking water

针对某水源硫酸根、总硬度、浑浊度、溶解性总固体4项指标不符合《生活饮用水卫生标准》(GB 5749-2006)的水质特点,对处理工艺进行了分析研究。通过微絮凝过滤和反渗透技术相结合的处理工艺,处理结果表明微絮凝过滤对硫酸根和总硬度的去除率分别为2%和3%~5%,一级反渗透对其去除率均达到了95%以上。两种工艺处理水按比例混合,出水水质达到生活饮用水卫生标准。介绍了主处理单元的设计参数,并对反渗透系统吨水运行费用进行了分析。

For the water quality indexes of sulfate radical、total hardness、NTU and total dissolved solid cannot meet the Standards for drinking water quality(GB 5749-2006),the process flow were analyzed.RO and microflocculation-filtration were used to treat the water.It was found that the removal rates of sulfate radical and total hardness by microflocculation-filtration were 2%and 3%~5%,and RO were above 95%for sulfate radical and total hardness.Then the treated water was mixed in stated proportion,which was corresponding to standard for drinking water.Design parameters and treatment efficiency of the two processes were respectively presented,and the operation cost of RO process in water treatment was also evaluated.