Title: Performance of Biological Powder Activated Carbon-Membrane Bioreactor (BPAC-MBR) for old-landfill leachate treatment

Authors: Chavalit Ratanatamskul, Numchai Nilthong

Addresses: Faculty of Engineering, Department of Environmental Engineering, Chulalongkorn University, Payatai Road, Patumwan, Bangkok 10330, Thailand. ' Faculty of Engineering, Department of Environmental Engineering, Chulalongkorn University, Payatai Road, Patumwan, Bangkok 10330, Thailand

Abstract: This research aims to investigate the performance of the combined BPAC-MBR system for old-landfill leachate treatment. The system was operated at two different intermittent aeration modes (aeration or non-aeration) of 120-120 min and 150-150 min. It was found that the BPAC-MBR system operating at 150-150 min could give higher removal efficiencies for all parameters; COD at 83%, colour at 85%, TKN at 97%, and TP at 68%. The reason might be that the degradation mechanism of microorganisms inside the BPAC-MBR system needed sufficient time for sequential aerobic and anaerobic periods to improve biodegradation for slowly biodegradable organic compounds.

Keywords: BPAC-MBR system; old landfills; landfill leachate; treatment performance; intermittent aeration; slow biodegradation; biodegradable organic matter; carbon membrane bioreactors; leachate treatment; activated carbon.

DOI: 10.1504/IJEWM.2009.027396

International Journal of Environment and Waste Management, 2009 Vol.4 No.3/4, pp.271 - 281

Published online: 22 Jul 2009 *

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