title: Modeling full-scale osmotic membrane bioreactor systems with high sludge retention and low salt concentration factor for wastewater reclamation.
abstract: A full-scale model was developed to find optimal design parameters for osmotic membrane bioreactor (OMBR) and reverse osmosis (RO) hybrid system for wastewater reclamation. The model simulates salt accumulation, draw solution dilution and water flux in OMBR with sludge concentrator for high retention and low salt concentration factor. The full-scale OMBR simulation results reveal that flat-sheet module with spacers exhibits slightly higher flux than hollow-fiber; forward osmosis (FO) membrane with high water permeability, low salt permeability, and low resistance to salt diffusion shows high water flux; an optimal water recovery around 50% ensures high flux and no adverse effect on microbial activity; and FO membrane cost decreases and RO energy consumption and product water concentration increases at higher DS flow rates and concentrations. The simulated FO water flux and RO energy consumption ranges from 3.03 to 13.76LMH and 0.35 to 1.39kWh/m(3), respectively.
authors.affiliation: Advanced Process and Materials R&BD Group, Korea Institute of Industrial Technology, 156 Gaetbeol-ro, Yeonsu-gu, Incheon, Republic of Korea.
authors.forename: Sung Hyuk
authors.initials: SH
authors.lastname: Park
authors.affiliation: Department of Civil Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 608-737, Republic of Korea.
authors.forename: Beomseok
authors.initials: B
authors.lastname: Park
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), Post Box 129, Broadway 2007, NSW, Australia.
authors.forename: Ho Kyong
authors.initials: HK
authors.lastname: Shon
authors.affiliation: Department of Civil Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 608-737, Republic of Korea. Electronic address: suhankim@pknu.ac.kr.
authors.forename: Suhan
authors.initials: S
authors.lastname: Kim
mesh_terms: D019149:Bioreactors / Q000382:microbiology*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008567:Membranes, Artificial; D008956:Models, Chemical; D064587:Osmoregulation; D059027:Recycling / Q000379:methods; D012492:Salts / Q000737:chemistry* / Q000302:isolation & purification; D012722:Sewage / Q000382:microbiology*; D014462:Ultrafiltration / Q000295:instrumentation / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D012492:Salts; D012722:Sewage; D014874:Water Pollutants, Chemical
keywords: Flat-sheet module; Full-scale OMBR model; Osmotic membrane bioreactor (OMBR); Reverse osmosis (RO); Wastewater reclamation