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Journal article

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

Alvarez-Vazquez H, Jefferson B, Judd S...(+3 more)

Journal of Chemical Technology and Biotechnology, vol. 79, issue 10 (2004) pp. 1043-1049

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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.

Author-supplied keywords

  • Aerobic treatment
  • Anaerobic treatment
  • COD removal
  • Hydraulic retention time
  • Landfill leachate
  • Membrane bioreactors
  • Treatability

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