膜分離プロセスにおける操作因子, 液中成分の透過フラックスに及ぼす影響に関する基礎的研究

抄録

Operational conditions, in solid-liquid separation, of a cross-flow type ultra membrane filtration system were experimentally examined to make a proper formulation of permeation flux.
Pure water with and without selected constituent substance such as polyethylene glycol and activated sludge as used as water sample.
Pure water was used to obtain the basic information of filtration. Permeation flux as well as membrane resistance (Rm) was affected predominantly by applied pressure to the filter (P). Rm was increased consistently according to the increase of P and formulated as a function of P. The other samples showed various behavior of the flux and filtration resistance. The resistance caused by cake-layer and/or gel-layer (Rcg) was obtained by reducing Rm from the filtration resistance and formulated by substance weight attached on unit filter surface area, compression factor (n) of the attached substance and P. The permeation flux was satisfactorily expressed by introducing Rm and Rcg, and the behavior of it to P was explained by the magnitude of the compression factor (n).