纳滤去除饮用水中有机物及类炭疽杆菌的研究

Study on Nanofiltration for Removal of Organics and Bacteric Contamination from Drinking Water

以某自备井水和类炭疽杆菌污染水为研究对象,考察了纳滤工艺对水中有机物和类炭疽杆菌的去除效果.结果表明：井水经10μm保安过滤器、活性炭柱、超滤处理后可满足纳滤的进水水质要求;纳滤工艺可有效去除水中的有机物及致癌、致畸、致突变物,对TOC的去除率＞90%,出水的Ames试验结果为阴性;在类炭疽杆菌含量为27000～33000 CFU/100mL的条件下,超滤膜的除菌率为89.70%,纳滤膜的除菌率为48.78%,而离子交换树脂则无除菌作用;当采用纳滤工艺去除类炭疽杆菌及其繁殖体时,需先经过消毒处理才能达到理想的净化效果.

Taking well water as the object, the effect of nanofiltration on removing organics and similar anthrax bacillus contamination was dealt with. The result shows that well water passing through 10 ~xm security filter, activated carbon and ultrafiltration meets the need for nanofihration, This craft can efficiently remove matters causing cancer, malformation and mutation. It can also remove TOC above 90%. An Ames test shows that the water is negative. The percentage of removing bacteria is 89.70% by ultrafiltration, and 48.78% by nanofihration in water sample containing similar anthrax bacillus 27 000 - 33 000 CFU/100 mL, but there is no effect by ion exchange. The ideal effect of decontamination can be achieved only after sterilizing when removing similar anthrax bacillus and its breed body by nanofihration.