Treatment of landfill leachate with different techniques: An overview

Mojiri, A; Zhou, JL; Ratnaweera, H; Ohashi, A; Ozaki, N; Kindaichi, T; Asakura, H

Treatment of landfill leachate with different techniques: An overview

Mojiri, A Zhou, JL Ratnaweera, H Ohashi, A Ozaki, N Kindaichi, T Asakura, H

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Publisher:: IWA PUBLISHING
Publication Type:: Journal Article
Citation:: Journal of Water Reuse and Desalination, 2021, 11, (1), pp. 66-96
Issue Date:: 2021-01-01

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Field	Value	Language
dc.contributor.author	Mojiri, A
dc.contributor.author	Zhou, JL
dc.contributor.author	Ratnaweera, H
dc.contributor.author	Ohashi, A
dc.contributor.author	Ozaki, N
dc.contributor.author	Kindaichi, T
dc.contributor.author	Asakura, H
dc.date.accessioned	2022-05-12T03:22:47Z
dc.date.available	2022-05-12T03:22:47Z
dc.date.issued	2021-01-01
dc.identifier.citation	Journal of Water Reuse and Desalination, 2021, 11, (1), pp. 66-96
dc.identifier.issn	2220-1319
dc.identifier.issn	2408-9370
dc.identifier.uri	http://hdl.handle.net/10453/157270
dc.description.abstract	Landfill leachate is characterised by high chemical and biological oxygen demand and generally consists of undesirable substances such as organic and inorganic contaminants. Landfill leachate may differ depending on the content and age of landfill contents, the degradation procedure, climate and hydrological conditions. We aimed to explain the characteristics of landfill leachate and define the practicality of using different techniques for treating landfill leachate. Different treatments comprising biological methods (e.g. bioreactors, bioremediation and phytoremediation) and physicochemical approaches (e.g. advanced oxidation processes, adsorption, coagulation/ flocculation and membrane filtration) were investigated in this study. Membrane bioreactors and integrated biological techniques, including integrated anaerobic ammonium oxidation and nitrification/denitrification processes, have demonstrated high performance in ammonia and nitrogen elimination, with a removal effectiveness of more than 90%. Moreover, improved elimination efficiency for suspended solids and turbidity has been achieved by coagulation/ flocculation techniques. In addition, improved elimination of metals can be attained by combining different treatment techniques, with a removal effectiveness of 40–100%. Furthermore, combined treatment techniques for treating landfill leachate, owing to its high chemical oxygen demand and concentrations of ammonia and low biodegradability, have been reported with good performance. However, further study is necessary to enhance treatment methods to achieve maximum removal efficiency.
dc.language	English
dc.publisher	IWA PUBLISHING
dc.relation.ispartof	Journal of Water Reuse and Desalination
dc.relation.isbasedon	10.2166/wrd.2020.079
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0904 Chemical Engineering, 0907 Environmental Engineering
dc.title	Treatment of landfill leachate with different techniques: An overview
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0904 Chemical Engineering
utslib.for	0907 Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
dc.date.updated	2022-05-12T03:22:45Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	1

Abstract:

Landfill leachate is characterised by high chemical and biological oxygen demand and generally consists of undesirable substances such as organic and inorganic contaminants. Landfill leachate may differ depending on the content and age of landfill contents, the degradation procedure, climate and hydrological conditions. We aimed to explain the characteristics of landfill leachate and define the practicality of using different techniques for treating landfill leachate. Different treatments comprising biological methods (e.g. bioreactors, bioremediation and phytoremediation) and physicochemical approaches (e.g. advanced oxidation processes, adsorption, coagulation/ flocculation and membrane filtration) were investigated in this study. Membrane bioreactors and integrated biological techniques, including integrated anaerobic ammonium oxidation and nitrification/denitrification processes, have demonstrated high performance in ammonia and nitrogen elimination, with a removal effectiveness of more than 90%. Moreover, improved elimination efficiency for suspended solids and turbidity has been achieved by coagulation/ flocculation techniques. In addition, improved elimination of metals can be attained by combining different treatment techniques, with a removal effectiveness of 40–100%. Furthermore, combined treatment techniques for treating landfill leachate, owing to its high chemical oxygen demand and concentrations of ammonia and low biodegradability, have been reported with good performance. However, further study is necessary to enhance treatment methods to achieve maximum removal efficiency.

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http://hdl.handle.net/10453/157270