摘要
以自来水为原水，采用反渗透（ＲＯ）和纳滤（ＮＦ）进行深度处理试验研究．比较了２种膜对致突变物和无机离子的去除率．结果表明，ＲＯ和ＮＦ均能使Ａｍｅｓ试验呈阳性的水转变为阴性；ＮＦ对一价阳离子（Ｋ＋、Ｎａ＋）的去除率比ＲＯ低１０％左右，对二价阳离子（Ｃａ２＋、Ｍｇ２＋）的去除率略低于ＲＯ，ＮＦ比ＲＯ能多保留一些离子．
In order to get superior drinking water,tap water was treated respectively by reverse osmosis (RO) and nanofiltration(NF) in the laboratory.The removal effects of mutagens and ions by Ro and NF were compared.The Ames test results showed that both RO and NF could convert mutagenicity from positive to negative,while the ions removal effects of the RO and NF membranes are different,the removal rate of one valence positive ions (Na +,K +) by NF is tenpercent lower than that by RO,the removal rate of two valence positive ions(Ca 2+ ,Mg 2+ ) is a little lower than that by RO.More ions which are beneficial to human health pass through nanofiltration mombrane into drinking water.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第5期65-67,共3页
Environmental Science
关键词
NF膜
RO膜
致突变物
水深度处理
无机离子
净化
reverse osmosis,nanofiltration,advanced water,mutagens,inoganic ions,Ames test.
