水厂纳滤工艺的运用分析与研究

Application Analysis and Research of Nanofiltration Process in Waterworks

自来水厂需要对原水进行处理,使其达到居民用水安全要求。常规的水处理工艺主要是降低水的浊度、色度和减少致病微生物。若原水受到污染,一般用臭氧+活性炭工艺来去除有机污染物。这些工艺处理原水的稳定性不佳,会造成水质的二次污染。因此,水厂可在虹吸滤池后增设超滤膜+纳滤膜处理工艺(其中超滤膜起到纳滤膜的进水保障作用),进一步对原水进行深度处理,提高自来水的出水质量,保障居民的饮用水安全。

The water plant needs to treat the raw water to meet the water safety requirements of the residents. Conventional water treatment processes primarily reduce water turbidity, color and reduce pathogenic microorganisms. If the raw water is contaminated, the ozone ＋ activated carbon process is generally used to remove organic pollutants. The poor stability of these processes for treating raw water can cause secondary pollution of water quality. Therefore, the water plant can add an ultrafiltration membrane ＋ nanofiltration membrane treatment process after the siphon filter （the ultrafiltration membrane serves as the water supply guarantee function of the nanofiltration membrane）, and further deep treatment of the raw water to improve the effluent quality of the tap water, and ensure the safety of residents＇ drinking water.