DVGW-Technologiezentrum Wasser, Karlsruhe, Germany.
Water Sci Technol. 2012;66(1):151-7. doi: 10.2166/wst.2012.141.
This study examines mechanisms for removal of bacteriophages (MS2 and phiX174) by ceramic membranes without application of flocculants. The ceramic membranes considered included ultra- and microfiltration membranes of different materials. Phages were spiked into the feed water in pilot scale tests in a waterworks. The membranes with pore sizes of 10 nm provided a 2.5-4.0 log removal of the phages. For pore sizes of 50 nm, the log removal dropped to 0.96-1.8. The membrane with a pore size of 200 nm did not remove phages. So, the removal of both MS2- and phiX174-phages depended on the pore size of the membranes. But apart from pore size also other factors influence the removal of phages. Removal was 0.5-0.9 log higher for MS2-phages compared with phiX174-phages. Size exclusion seems to be the major but not the only mechanism which influences the efficiency of phage removal by ceramic membranes.
本研究考察了在不投加絮凝剂的情况下，通过陶瓷膜去除噬菌体（MS2 和 phiX174）的机制。所考虑的陶瓷膜包括不同材料的超滤和微滤膜。在水厂的中试规模试验中，将噬菌体添加到进料水中。孔径为 10nm 的膜对噬菌体的去除率为 2.5-4.0 个对数。对于孔径为 50nm 的膜，对数去除率降至 0.96-1.8。孔径为 200nm 的膜不能去除噬菌体。因此，MS2 和 phiX174 噬菌体的去除都取决于膜的孔径。但是，除了孔径之外，其他因素也会影响噬菌体的去除。MS2 噬菌体的去除率比 phiX174 噬菌体高 0.5-0.9 个对数。尺寸排阻似乎是影响陶瓷膜去除噬菌体效率的主要机制，但不是唯一机制。
