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Study of Hybrid Vertical Anaerobic Sludge‐Aerobic Biofilm Membrane Bioreactor for Wastewater Treatment

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Alternative design of a hybrid biofilm reactor was developed and evaluated experimentally in this article, aimed to minimize a suspended solid in the effluent and to manage an excess sludge produced in a membrane bioreactor (MBR) system. A hybrid vertical anaerobic sludge‐aerated biofilm reactor (HyVAB) was proposed and coupled with external submerged membrane filtration for wastewater treatment application. The HyVAB featured an upper chamber of aerobic biofilm, a lower chamber of anaerobic activated sludge, and a roof-shaped separator located between the chambers, to prevent diffusion of dissolved oxygen to the anaerobic chamber. The lower chamber was used for anaerobic digestion of aerobic sludge waste. The effects of hydraulic retention time in the HyVAB on effluent quality and on membrane fouling were studied. The average suspended solids concentration in the effluent was found to be lower than 15 mg/L. The optimum operating conditions for the HyVAB MBR were investigated.

Keywords: anaerobic sludge digestion; excess sludge management; membrane bioreactor; vertical biofilm reactor

Document Type: Research Article


Publication date: 2010-03-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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