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Membrane bioreactors vs conventional biological treatment of landfill leachate: a brief review
Author(s) -
AlvarezVazquez Héctor,
Jefferson Bruce,
Judd Simon J
Publication year - 2004
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1072
Subject(s) - leachate , hydraulic retention time , bioreactor , environmental science , membrane bioreactor , bioreactor landfill , waste management , anaerobic exercise , process (computing) , environmental engineering , pulp and paper industry , wastewater , chemistry , engineering , computer science , physiology , organic chemistry , biology , operating system
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. Copyright © 2004 Society of Chemical Industry