Effect of Suction Pressure and Aeration on the Hollow Fibre Microfiltration of Excess Activated Sludge |
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| Institution: | 1. Department of Applied Chemistry, Ehime University, Matsuyama, Japan;2. Department of Chemical Engineering, Nagoya University, Nagoya, Japan;1. Institute of Environmental and Water Resources Management, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia;2. Department of Biosciences and Health Science, Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia;3. Environmental Engineering Group, School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom;1. Dep. Informática y Automática, ETSI Informática, UNED, 28040 Madrid, Spain;2. Faculty of Engineering and the Environment, University of Southampton, Southampton, UK;3. Dep. Informática, University of Almería, ceiA3, CIESOL, 04120 Almería, Spain;4. Dep. Ingeniería Química, University of Almería, ceiA3, CIESOL, 04120 Almería, Spain;1. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;2. Faculty of Technology, Telemark University College, Box 203, N-3901 Porsgrunn, Norway;1. LEPMI, UMR 5279, CNRS, Grenoble INP - Université de Savoie - Université J. Fourier, LMOPS - INES, Bat. IUT, Campus Savoie Technolac, F-73376 Le Bourget-du Lac Cedex, France;2. Institut Nationale de l’Énergie Solaire (INES), 50 avenue du Lac Léman, 73377 Le Bourget-du Lac Cedex, France;3. EDF, R & D Matériaux et Mécanique des Composants, Avenue des Renardires - Ecuelles, 77818 Moret-sur-Loing Cedex, France;1. Department of Industrial Engineering DII, University of Padova, Via Marzolo 9, 35131, Padova, Italy;2. DYEPOWER, Via Aurora 9h, 00013, Fonte Nuova, Rome, Italy;3. C.H.O.S.E.(Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome “Tor Vergata”, Via del Politecnico 1, 00133, Rome, Italy |
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| Abstract: | Under various suction pressures (8.0–88.0 kPa), the constant pressure filtration experiment of the excess activated sludge was carried out using the hollow fibre microfiltration membrane with/without aeration. The municipal excess activated sludge was very difficult to be filtered and had the characteristics of the strong compressibility (compressibility coefficient: 1.03). The aeration stripped a large part of cake formed on the membrane surface and increased the flux of the filtrate, but the effect of the aeration reduced at high suction pressure because of the strong compressibility. The very short filtration time used in this experiment little clogged pores of the hollow fibre membrane and the filtration resistance of the formed cake was much larger than the resistance of membrane clogging. |
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