Treatment of landfill leachate – high tech or low tech? A case study

Schwarzenbeck, N., Leonhard, K. and Wilderer, P.A. (2004) Treatment of landfill leachate – high tech or low tech? A case study. Water Science and Technology, 48 11: 277-284.

Author Schwarzenbeck, N.
Leonhard, K.
Wilderer, P.A.
Title Treatment of landfill leachate – high tech or low tech? A case study
Journal name Water Science and Technology   Check publisher's open access policy
ISSN 0273-1223
Publication date 2004
Sub-type Article (original research)
Volume 48
Issue 11
Start page 277
End page 284
Total pages 8
Place of publication London, U.K.
Publisher IWA Publishing/Portland Press
Language eng
Subject 0907 Environmental Engineering
Abstract At the sanitary landfill of the city of Penzberg (Germany), two diverse approaches to leachate treatment were studied as parts of a three-stage treatment concept. The performance of a simple aerobic pond was compared to that of an advanced multistage treatment unit, the latter comprising a membrane biological reactor and a two-stage activated carbon filter. For 274 days of the year (75%) the pond was able to provide sufficient treatment even under cold weather conditions. For temperatures lower than 5°C, a higher biomass content and temporal storage of the raw leachate (e.g. increasing hydraulic retention time) could close the gap of insufficient treatment. In contrast, the advanced treatment system could only accomplish limited treatment capabilities due to insufficient maintenance, low loading conditions and deficient coordination between the individual treatment steps. As a result, degradation rates were low and operational problems frequent. Limits for Ntot were exceeded regularly (Ntot,e = 60-70 mg/L), throughput broke down and excessive nitrite production occurred (NO2-Ne = 10 mg/L) as a result of microbial activity inside the activated carbon filters. This case study clearly suggests aerobic ponds as an appropriate solution for the treatment of landfill leachate in areas where operational independence is essential.
Keyword Activated carbon
Aerobic pond
Decentralized treatment
Landfill leachate
Membrane biological reactor
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
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Created: Mon, 16 Feb 2009, 17:58:44 EST by Joanne Mellor on behalf of Advanced Water Management Centre