Title: Dye wastewater treatment by using ceramic membrane bioreactor

Authors: Qi Yang, Haitao Shang, Jianlong Wang

Addresses: School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China. ' School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China. ' Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, PR China

Abstract: Performance of a Micro-filtration Membrane Bioreactor (MMBR) for treatment of dye wastewater was investigated. The experimental results indicated that the removal efficiency for COD, TOC and colour was 85%, 85-90% and 70%, respectively, the effluent COD was below 70 mgl−1 on average. Gel layer resistance of COD was 10%. Particle size distribution of sludge in MMBR was 1-150 μm, and the average particle diameter was 20-40 µm. The activity of dehydrogenase of activated sludge in MMBR was 36-42 mgTTC (gVSS) −1h−1, while active dehydrogenase enzyme content was 7.95 mgVSS−1.

Keywords: MMBR; micro-filtration membrane bioreactors; dye wastewater; active enzyme; activated sludge; ceramic membrane bioreactors; wastewater treatment.

DOI: 10.1504/IJEP.2009.027227

International Journal of Environment and Pollution, 2009 Vol.38 No.3, pp.267 - 279

Published online: 18 Jul 2009 *

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