期刊
BIORESOURCE TECHNOLOGY
卷 150, 期 -, 页码 149-155出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.09.111
关键词
Direct membrane filtration; Recovery of organic matter; Municipal wastewater; Membrane fouling; Chemically enhanced backwash
资金
- Core Research of Evolutional Science & Technology (CREST) for Innovative Technology and System for Sustainable Water Use from the Japan Science and Technology Agency (JST)
Direct membrane filtration (DMF) of municipal wastewater using a microfiltration membrane was investigated to capture organic matter. In contrast to the expectation that membrane fouling cannot be controlled in DMF of domestic wastewater, it was possible to stably continue membrane filtration with relatively high membrane fluxes (similar to 20 LMH) for >200 h by applying chemically enhanced backwash (CEB), whereas approximately 75% of the organic matter in wastewater could be recovered. Off-line chemical membrane cleaning could completely restore membrane permeability, indicating the possibility of a much longer operation of DMF. Selection of chemical reagents used for CEB was found to influence the amount of organic matter recovered by DMF. Based on the experimental results, feasibility of DMF was discussed by a comparison with a conventional wastewater treatment plant treating the same wastewater as studied in this study. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.
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