title: Pilot-scale temperate-climate treatment of domestic wastewater with a staged anaerobic fluidized membrane bioreactor (SAF-MBR).
abstract: A pilot-scale staged anaerobic fluidized membrane bioreactor (SAF-MBR) was operated continuously for 485 days, without chemical cleaning of membranes, treating primary-settled domestic wastewater with wastewater temperature between 8 and 30°C and total hydraulic retention time (HRT) between 4.6 and 6.8h. Average chemical oxygen demand (COD) and biochemical oxygen demand (BOD5) removals averaged 81% and 85%, respectively, during the first winter at 8-15°C before full acclimation had occurred. However, subsequently when fully acclimated, summer and winter COD removals of 94% and 90% and BOD5 removals of 98% and 90%, respectively, were obtained with average effluent COD never higher than 23 mg/L nor BOD5 higher than 9 mg/L. Operational energy requirement of 0.23 kW h/m(3) could be met with primary and secondary methane production, and could be reduced further through hydraulic change. Biosolids production in all seasons averaged 0.051 g volatile suspended solids per g COD removed.
authors.affiliation: Department of Environmental Engineering, Inha University, Namgu, Inharo 100, Incheon, Republic of Korea.
authors.forename: Chungheon
authors.initials: C
authors.lastname: Shin
authors.affiliation: Department of Environmental Engineering, Inha University, Namgu, Inharo 100, Incheon, Republic of Korea; Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA.
authors.forename: Perry L
authors.initials: PL
authors.lastname: McCarty
authors.affiliation: Department of Environmental Engineering, Inha University, Namgu, Inharo 100, Incheon, Republic of Korea.
authors.forename: Jeonghwan
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Environmental Engineering, Inha University, Namgu, Inharo 100, Incheon, Republic of Korea. Electronic address: jhb@inha.ac.kr.
authors.forename: Jaeho
authors.initials: J
authors.lastname: Bae
mesh_terms: D000693:Anaerobiosis; D057219:Biofouling / Q000517:prevention & control; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D008567:Membranes, Artificial; D008697:Methane / Q000378:metabolism; D009930:Organic Chemicals / Q000302:isolation & purification; D010865:Pilot Projects; D011312:Pressure; D012722:Sewage / Q000382:microbiology; D013816:Thermodynamics; D014835:Volatilization; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D008697:Methane; D009930:Organic Chemicals; D012722:Sewage; D062065:Wastewater
keywords: Anaerobic; Domestic wastewater; Energy; Fluidized-bed; Membrane bioreactor