纳滤膜用于直饮水生产的中试研究

Pilot Study on NF Membrane for Producing Direct Drinking Water

以市政自来水为原水、纳滤膜为主体工艺生产直饮水,考察了纳滤膜对原水浊度、微量有机污染物、内分泌干扰物及无机离子的去除效果。结果表明,纳滤膜对浊度和微量有机污染物、内分泌干扰物的去除彻底,对无机盐及各种单一无机阴、阳离子的去除率与其标准脱盐率基本一致,可确保直饮水的TDS、CODMn、硫酸盐、氟化物、浊度等水质指标达到《饮用净水水质标准》(CJ94—2005)的要求,出水的口感和安全性好。

Using municipal tap water as the raw water and the NF membrane as the main process to produce direct drinking water, the removal effects of turbidity, trace organic pollutants, endocrine disrupting chemicals （EDCs） and inorganic ions were studied. The results show that NF membrane can effectively remove turbidity, trace organic pollutants and EDCs. The removal rates of inorganic salts and single inorganic cation or anion are the same as the standard desahing rate. The indexes of direct drinking water, such as TDS, CODM., sulfate, fluoride, turbidity and so on can meet the requirements of the Water Quality Standard for Fine Drinking Water （CJ 94 -2005 ） , and the taste and safety are good.