title: Impact of temperature on feed-flow characteristics and filtration performance of an upflow anaerobic sludge blanket coupled ultrafiltration membrane treating municipal wastewater.
abstract: The objective of this study was to assess the operational feasibility of an anaerobic membrane bioreactor (AnMBR), consisting of an upflow anaerobic sludge blanket (UASB) reactor coupled to an ultrafiltration membrane unit, at two operational temperatures (25°C and 15°C) for the treatment of municipal wastewater. The results showed that membrane fouling at 15°C was more severe than that at 25°C. Higher chemical oxygen demand (COD) and soluble microbial products (SMP) concentrations, lower mean particle diameter, and higher turbidity in the UASB effluent at lower temperature aggravated membrane fouling compared to the 25°C operation. However, the overall AnMBR treatment performance was not significantly affected by temperature, which was attributed to the physical membrane barrier. Cake resistance was found responsible for over 40% of the total fouling in both cases. However, an increase was observed in the contribution of pore blocking resistance at 15°C related to the larger amount of fine particles in the UASB effluent compared to 25°C. Based on the overall results, it is concluded that an AnMBR, consisting of a UASB coupled membrane unit, is not found technically feasible for the treatment of municipal wastewater at 15°C, considering the rapid deterioration of the filtration performance.
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469 Istanbul, Turkey. Electronic address: H.Ozgun@tudelft.nl.
authors.forename: Hale
authors.initials: H
authors.lastname: Ozgun
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Tao
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469 Istanbul, Turkey.
authors.forename: Mustafa Evren
authors.initials: ME
authors.lastname: Ersahin
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China.
authors.forename: Zhongbo
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; Departament d'Enginyeria Quimica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Avda. De la Universitat s/n, 46100 Burjassot, Valencia, Spain.
authors.forename: Juan B
authors.initials: JB
authors.lastname: Gimenez
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands.
authors.forename: Henri
authors.initials: H
authors.lastname: Spanjers
authors.affiliation: Department of Water Management, Section Sanitary Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands.
authors.forename: Jules B
authors.initials: JB
authors.lastname: van Lier
mesh_terms: D000693:Anaerobiosis; D019149:Bioreactors; D012722:Sewage / Q000032:analysis*; D013696:Temperature; D014462:Ultrafiltration / Q000295:instrumentation; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D012722:Sewage; D062065:Wastewater
keywords: Anaerobic membrane bioreactor; Membrane fouling; Municipal wastewater; Temperature; Upflow anaerobic sludge blanket reactor