Effects of module configuration on hollow fibre filtration fouling and permeability
In the present study, an orthogonal array design was adopted to investigate effects of operational parameters including aeration intensity, membrane configuration and fibre length on membrane fouling in a lab scale. Mean membrane permeability decrease rate over the operation time was used to evaluate membrane fouling rate (MFR). In a constant pressure filtration mode of 15kPa, fibre length and aeration intensity were found to have a negative influence on MFR, and membrane configuration also had an obvious influence on MFR. Due to better fibre loose and movability, Ushape module had a satisfied anti-fouling ability. The three factors in influencing MFR is in the order of fibre length>module configuration> aeration intensity. The experiments results also showed that in the range of shorter than 60cm and longer than 100cm, the mean specific permeability performed a decline trend in all the module types. But the mean specific permeability displayed a slightly rise in the range of 60-100cm which is an optimal fibre length in anti-fouling and maintaining preferable permeability. The modules which had two permeate outlet attain the best mean specific permeability in all the modules, and the modules with a U-shape configuration showed the worst permeability. According to this work, it show that membrane module design have a significance on membrane optimization.
Hollow fibre Submerged membrane Membrane module Moduleconfiguration Gas-sparging
JieWang Feng-wei Yu HuiJia nan Luo
School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160,China School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160,China
国际会议
天津
英文
325-333
2011-11-12（万方平台首次上网日期，不代表论文的发表时间）