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Membrane bioreactors vs conventional biological treatment of landfill leachate: A brief review

by H. Alvarez-Vazquez, B. Jefferson, S.J. Judd
Journal of Chemical Technology and Biotechnology ()
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Abstract

A review of quality and biological treatment of landfill leachate is presented. Conventional ex-situ treatment normally demands multistage process treatment schemes, which may encompass both aerobic and anaerobic technologies alongside chemical precipitation and/or oxidation. This is to be contrasted with the more recent membrane bioreactor technology, which generally demands much reduced pre- and post-treatment and has a much reduced footprint compared with conventional biotreatment. Results are summarised in terms of the key determinant of COD removal for waters characterised in terms of BOD/COD ratio and age. Process operation is characterised with respect to COD strength and loading rate, hydraulic retention time and number of individual unit operations. © 2004 Society of Chemical Industry.

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