Anaerobic digestion of pressed off leachate from the organic fraction of municipal solid waste

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2009.09.019· OSTI ID:21457152

Nayono, Satoto E ^[1]; Winter, Josef ^[2]; Gallert, Claudia ^[2]

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1. Department of Civil Engineering, Yogyakarta State University, Campus UNY Karangmalang Yogyakarta 55281 (Indonesia)
2. Institute of Biology for Engineers and Biotechnology of Wastewater, University of Karlsruhe, Am Fasanengarten, 76131 Karlsruhe (Germany)

A highly polluted liquid ('press water') was obtained from the pressing facility for the organic fraction of municipal solid waste in a composting plant. Methane productivity of the squeezed-off leachate was investigated in batch assays. To assess the technical feasibility of 'press water' as a substrate for anaerobic digestion, a laboratory-scale glass column reactor was operated semi-continuously at 37 {sup o}C. A high methane productivity of 270 m{sup -3} CH{sub 4} ton{sup -1} COD{sub added} or 490 m{sup -3} CH{sub 4} ton{sup -1} VS{sub added} was achieved in the batch experiment. The semi-continuously run laboratory-scale reactor was initially operated at an organic loading rate of 10.7 kg COD m{sup -3} d{sup -1}. The loading was increased to finally 27.7 kg COD m{sup -3} d{sup -1}, corresponding to a reduction of the hydraulic retention time from initially 20 to finally 7.7 days. During the digestion, a stable elimination of organic material (measured as COD elimination) of approximately 60% was achieved. Linearly with the increment of the OLR, the volumetric methane production of the reactor increased from 2.6 m{sup 3} m{sub reactor}{sup -3} d{sup -1} to 7.1 m{sup 3} m{sub reactor}{sup -3} d{sup -1}. The results indicated that 'press water' from the organic fraction of municipal solid waste was a suitable substrate for anaerobic digestion which gave a high biogas yield even at very high loading rates.

• OSTI ID: 21457152
• Journal Information: Waste Management, Vol. 30, Issue 10; Other Information: DOI: 10.1016/j.wasman.2009.09.019; PII: S0956-053X(09)00373-0; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
ANAEROBIC DIGESTION
CHEMICAL REACTORS
COMPOSTING
LOADING RATE
METHANE
PLANTS
PRESSING
PRODUCTIVITY
SOLID WASTES
WATER POLLUTION
YIELDS
ALKANES
BIOCONVERSION
DIGESTION
FABRICATION
HYDROCARBONS
MANAGEMENT
MATERIALS WORKING
ORGANIC COMPOUNDS
POLLUTION
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES