title: Effect of sparging rate on permeate quality in a submerged anaerobic membrane bioreactor (SAMBR) treating leachate from the organic fraction of municipal solid waste (OFMSW).
abstract: This paper focuses on the treatment of leachate from the organic fraction of municipal solid waste (OFMSW) in a submerged anaerobic membrane bioreactor (SAMBR). Operation of the SAMBR for this type of high strength wastewater was shown to be feasible at 5 days hydraulic retention time (HRT), 10 L min(-1) (LPM) biogas sparging rate and membrane fluxes in the range of 3-7 L m(-2) hr(-1) (LMH). Under these conditions, more than 90% COD removal was achieved during 4 months of operation without chemical cleaning the membrane. When the sparging rate was reduced to 2 LPM, the transmembrane pressure increased dramatically and the bulk soluble COD concentration increased due to a thicker fouling layer, while permeate soluble COD remained constant. Permeate soluble COD concentration increased by 20% when the sparging rate increased to 10 LPM.
authors.affiliation: Department of Chemical Engineering and Chemical Technology, Imperial College of Science and Technology and Medicine, Prince Consort Road, London SW7 2BY, UK. Electronic address: antoinetrzcinski@hotmail.com.
authors.forename: Antoine P
authors.initials: AP
authors.lastname: Trzcinski
authors.affiliation: Department of Chemical Engineering and Chemical Technology, Imperial College of Science and Technology and Medicine, Prince Consort Road, London SW7 2BY, UK.
authors.forename: David C
authors.initials: DC
authors.lastname: Stuckey
mesh_terms: D000693:Anaerobiosis; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors; D006801:Humans; D008567:Membranes, Artificial; D062611:Solid Waste; D014865:Waste Disposal, Fluid
chemical_list: D008567:Membranes, Artificial; D062611:Solid Waste
keywords: Anaerobic digestion; Effluent quality; Landfill leachate; Sparging rate; Submerged anaerobic membrane bioreactor