Anaerobic digestion of the organic fraction of municipal solid waste in a two-stage membrane process
Article
Article Title | Anaerobic digestion of the organic fraction of municipal solid waste in a two-stage membrane process |
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ERA Journal ID | 4696 |
Article Category | Article |
Authors | Trzcinski, A. P. (Author) and Stuckey, D. C. (Author) |
Journal Title | Water Science and Technology |
Journal Citation | 60 (8), pp. 1965-1978 |
Number of Pages | 14 |
Year | 2009 |
Publisher | IWA Publishing |
Place of Publication | United Kingdom |
ISSN | 0273-1223 |
1996-9732 | |
Digital Object Identifier (DOI) | https://doi.org/10.2166/wst.2009.498 |
Web Address (URL) | http://wst.iwaponline.com/content/60/8/1965 |
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. |
Keywords | Anaerobic digestion (AD); Submerged Anaerobic Membrane Bioreactor (SAMBR); Organic Fraction of Municipal Solid Waste (OFMSW); refractory organics; |
ANZSRC Field of Research 2020 | 400410. Wastewater treatment processes |
400409. Separation technologies | |
410404. Environmental management | |
401102. Environmentally sustainable engineering | |
Byline Affiliations | Imperial College London, United Kingdom |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3v34/anaerobic-digestion-of-the-organic-fraction-of-municipal-solid-waste-in-a-two-stage-membrane-process
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