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Enhanced biodegradation at the Landgraaf bioreactor test-cell

Enhanced biodegradation at the Landgraaf bioreactor test-cell
Enhanced biodegradation at the Landgraaf bioreactor test-cell
From 2001 to 2011, a bioreactor demonstration was performed in a 25,000 m3 (8 m deep, 3500 m2 surface) test-cell. In this bioreactor, biodegradation was enhanced by premixing and homogenizing of waste, recirculation of leachate and aeration. Anaerobic biodegradation was completed within four years and was followed by two years of aeration. Ultimately a residue was obtained that had lost approximately 95% of its biogas potential. Biodegradation resulted in a significantly reduced leaching potential for dissolved organic carbon (DOC) and specific heavy metals. For other inorganic components, less progress was achieved. Increased flushing would be required for further reduction of the leaching potential. A significant reduction in chemical oxygen demand (COD) and ammonia (NH+4) in leachate was not demonstrated during the relative short-term aeration: COD concentrations actually increased slightly and there was no effect on NH+4. During the project, it became clear that moisture flow through the waste followed preferential flow paths. Therefore, attention was also paid to gain better understanding of leachate flows. From a tracer test, it was concluded that part of the waste contaminants are held in immobile blocks and are to a large extent unaffected by flow occurring in the surrounding preferential flow paths.
landfill, sustainable, biodegradation, leachate, hydrology
0956-053X
2048-2060
Oonk, H.
627d4c2d-1c53-449c-8ff0-d63f66a97300
van Zomeren, A.
4b1c1986-6333-4a48-bbed-0f80a517e18b
Rees-White, T.C.
852278dd-f628-4d98-a03a-a34fea8c75d6
Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Hoekstra, N.
c0b5cd95-6905-4714-aa63-cd7cb22c697a
Luning, L.
2ceca600-b1de-4722-854c-60c4d012f6e8
Hannen, M.
2126aee5-0445-43c7-b6ea-55bc606911a8
Hermkes, H.
4f2ce1cb-c7b1-4319-a47b-d8e23598fdf9
Woelders, H.
061fc0f6-2fed-44ab-8241-caa18eb247b8
Oonk, H.
627d4c2d-1c53-449c-8ff0-d63f66a97300
van Zomeren, A.
4b1c1986-6333-4a48-bbed-0f80a517e18b
Rees-White, T.C.
852278dd-f628-4d98-a03a-a34fea8c75d6
Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Hoekstra, N.
c0b5cd95-6905-4714-aa63-cd7cb22c697a
Luning, L.
2ceca600-b1de-4722-854c-60c4d012f6e8
Hannen, M.
2126aee5-0445-43c7-b6ea-55bc606911a8
Hermkes, H.
4f2ce1cb-c7b1-4319-a47b-d8e23598fdf9
Woelders, H.
061fc0f6-2fed-44ab-8241-caa18eb247b8

Oonk, H., van Zomeren, A. and Rees-White, T.C. et al. (2013) Enhanced biodegradation at the Landgraaf bioreactor test-cell. Waste Management, 33 (10), 2048-2060. (doi:10.1016/j.wasman.2013.03.003). (PMID:23602275)

Record type: Article

Abstract

From 2001 to 2011, a bioreactor demonstration was performed in a 25,000 m3 (8 m deep, 3500 m2 surface) test-cell. In this bioreactor, biodegradation was enhanced by premixing and homogenizing of waste, recirculation of leachate and aeration. Anaerobic biodegradation was completed within four years and was followed by two years of aeration. Ultimately a residue was obtained that had lost approximately 95% of its biogas potential. Biodegradation resulted in a significantly reduced leaching potential for dissolved organic carbon (DOC) and specific heavy metals. For other inorganic components, less progress was achieved. Increased flushing would be required for further reduction of the leaching potential. A significant reduction in chemical oxygen demand (COD) and ammonia (NH+4) in leachate was not demonstrated during the relative short-term aeration: COD concentrations actually increased slightly and there was no effect on NH+4. During the project, it became clear that moisture flow through the waste followed preferential flow paths. Therefore, attention was also paid to gain better understanding of leachate flows. From a tracer test, it was concluded that part of the waste contaminants are held in immobile blocks and are to a large extent unaffected by flow occurring in the surrounding preferential flow paths.

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e-pub ahead of print date: 18 April 2013
Published date: October 2013
Keywords: landfill, sustainable, biodegradation, leachate, hydrology
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 359363
URI: https://eprints.soton.ac.uk/id/eprint/359363
ISSN: 0956-053X
PURE UUID: a95c9137-1ef1-470f-95d4-15150d517362
ORCID for T.C. Rees-White: ORCID iD orcid.org/0000-0001-9009-8432
ORCID for R.P. Beaven: ORCID iD orcid.org/0000-0002-1387-8299

Catalogue record

Date deposited: 29 Oct 2013 09:17
Last modified: 20 Jul 2019 01:16

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