Treatment effect of nanofiltration membrane on organic matter in different water sources
In order to explore the characteristics of nanofiltration(NF)in removing organic matter in actual water,the treatment effect of two NF membranes(NF1 and NF2)on organic pollution in different water bodies were comprehensively studied with the conventional water quality indexes,trihalomethane-forming potential(THMFP),hydrophilic organic carbon and three-dimensional fluorescence as the main indexes,and the mechanism of membrane pollution was explored.The results showed that both NF1 and NF2 could effectively improve drinking water quality,and the removal rates of total organic carbon could reach over 94%and over 72%,respectively.The removal rate of permanganate index could reach over 80%and over 66%respectively.The removal rate of NF1 for influent THMFP was about 90%.The synergistic effect of inorganic and organic pollution was the main cause of NF membrane pollution.