Anaerobic digestion of the organic fraction of municipal solid waste in a two-stage membrane process

Trzcinski, A. P. and Stuckey, D. C. (2009) Anaerobic digestion of the organic fraction of municipal solid waste in a two-stage membrane process. Water Science and Technology, 60 (8). pp. 1965-1978. ISSN 0273-1223

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Abstract

A batch of the Organic Fraction of Municipal Solid Waste (OFMSW) was treated in a two-step process with effluent recirculation comprising a novel hydrolytic reactor (HR) followed by a Submerged Anaerobic Membrane Bioreactor (SAMBR) operating at a stable permeate flux of 5.6 L/m².hr (LMH). A soluble COD removal higher than 95% was obtained from the SAMBR. The soluble COD as well as the Total Suspended Solids (TSS) did not build up due to efficient hydrolysis inside the SAMBR, and no VFA accumulation occurred due to the complete retention of methanogens by the membrane as well as the formation of syntrophic associations. Because of the microfiltration membrane in the second reactor a stabilized leachate was obtained from the very first days of the treatment and the highly stable process enabled shorter treatment periods compared to traditional leach bed processes. This experiment showed that the recycle of the stabilised leachate does not lead to a build up of SCOD. Size exclusion chromatography analysis confirmed that high molecular weight compounds were completely degraded and did not appear in the SAMBR permeate, and that low molecular weight fulvic-like and medium MW material were present in the permeate of the SAMBR but their concentration remained stable with time.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty / Department / School: No Faculty
Date Deposited: 11 Dec 2017 05:33
Last Modified: 13 Dec 2017 01:34
Uncontrolled Keywords: Anaerobic digestion (AD); Submerged Anaerobic Membrane Bioreactor (SAMBR); Organic Fraction of Municipal Solid Waste (OFMSW); refractory organics;
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes
09 Engineering > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies
05 Environmental Sciences > 0502 Environmental Science and Management > 050205 Environmental Management
09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
Socio-Economic Objective: D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961101 Physical and Chemical Conditions of Water for Urban and Industrial Use
Identification Number or DOI: 10.2166/wst.2009.498
URI: http://eprints.usq.edu.au/id/eprint/30140

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