Farahbakhsh K, Smith D W
School of Engineering, University of Guelph, Guelph, Ont., Canada N1G 2W1.
Water Res. 2004 Feb;38(3):585-92. doi: 10.1016/j.watres.2003.10.018.
The efficacy of a microfiltration (MF) pilot plant in removing somatic coliphages (referred hereafter as coliphages) present in the secondary effluent was evaluated during this study. The impact of operating parameters such as feed coliphage concentrations, permeate flux and membrane fouling on the removal of coliphages by the MF plant was investigated. The study showed that membrane fouling was beneficial for removing coliphages by MF. It was also shown that the removal of coliphages by MF was initially governed by adsorption on membrane surface or in membrane pores. As the membrane fouled, however, the removal of coliphages was primarily governed by direct interception on the cake layer formed on the surface of the membrane. Increases in feed coliphage concentrations resulted in the passage of larger numbers of coliphages when the MF was clean but had little impact on the passage of coliphages when the membrane became fouled. Increasing permeate flux lowered log-removal values (LRVs) for the clean membrane but resulted in an initial increase in LRVs for the fouled membrane followed by a drop in LRVs with further increases in permeate flux.
在本研究中，对一个微滤（MF）中试装置去除二级出水中存在的体细胞噬菌体（以下简称噬菌体）的效果进行了评估。研究了诸如进水噬菌体浓度、渗透通量和膜污染等运行参数对MF装置去除噬菌体的影响。研究表明，膜污染有利于MF去除噬菌体。还表明，MF对噬菌体的去除最初受膜表面或膜孔吸附的控制。然而，随着膜的污染，噬菌体的去除主要受膜表面形成的滤饼层上的直接截留控制。进水噬菌体浓度增加时，MF清洁时会导致更多噬菌体通过，但膜污染时对噬菌体的通过影响很小。增加渗透通量会降低清洁膜的对数去除值（LRV），但会导致污染膜的LRV最初增加，随着渗透通量进一步增加，LRV会下降。
