纳滤膜净化地下水时预处理工艺的选择研究

针对不同地下水水质,分别以活性炭、石英砂、锰砂进行预处理,采用纳滤膜工艺制取优质饮用水。旨在为不同地区、不同水质的地下水净化探索一种更为有效的预处理方法。研究表明,活性炭更适合用作有机污染物含量较高的浅层地下水的预处理;而石英砂、锰砂更适合用作铁、锰含量较高的深层地下水的预处理。也可以将几种预处理工艺联用,以获得更好的效果。

Pretreatment technology selection for groundwater purified by nanofiltration membrane

To find effective pretreatment technologies for groundwater purification in different regions and with different water qualities, groundwater of different water qualities is pretreated by active carbon, quartz sand and manganese sand respectively before nanofiltration membrane technology is used to obtain drinking water of high quality. It is concluded that active carbon is the best suitable for the pretreatment of shallow groundwater with high organic pollutants, while quartz sand and manganese sand are effective in treating deep groundwater with high contents of iron and manganese. Better results can be acquired through the combination of these pretreatment methods.