title: Characterization of organic membrane foulants in a forward osmosis membrane bioreactor treating anaerobic membrane bioreactor effluent.
abstract: In this study, two aerobic forward osmosis (FO) membrane bioreactors (MBR) were utilized to treat the effluent of mesophilic (35°C) and atmospheric (25°C) anaerobic MBRs, respectively. The results showed that the FO membrane process could significantly improve the removal efficiencies of N and P. Meanwhile, the flux decline of the FOMBR treating effluent of mesophilic AnMBR (M-FOMBR) was higher than that treating effluent of atmospheric AnMBR (P-FOMBR). The organic membrane foulants in the two FOMBRs were analyzed to understand the membrane fouling behavior in FO processes. It was found that the slightly increased accumulation of protein-like substances into external foulants did not cause faster flux decline in P-FOMBR than that in M-FOMBR. However, the quantity of organic matter tended to deposit or adsorb into FO membrane pores in P-FOMBR was less than that in M-FOMBR, which was accordance with the tendency of membrane fouling indicated by flux decline.
authors: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors: Yi
authors: Y
authors: Ding
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: hittianyu@163.com.
authors: Yu
authors: Y
authors: Tian
authors: School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264200, China.
authors: Zhipeng
authors: Z
authors: Li
authors: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264200, China.
authors: Feng
authors: F
authors: Liu
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264200, China.
authors: Hong
authors: H
authors: You
mesh_terms: D000693:Anaerobiosis; D057219:Biofouling; D001704:Biopolymers / Q000032:analysis; D019149:Bioreactors; D008567:Membranes, Artificial; D009930:Organic Chemicals / Q000302:isolation & purification*; D009995:Osmosis; D012995:Solubility; D013050:Spectrometry, Fluorescence; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D001704:Biopolymers; D008567:Membranes, Artificial; D009930:Organic Chemicals; D062065:Wastewater
keywords: Anaerobic membrane bioreactor (AnMBR); Extracellular polymeric substances (EPS); Forward osmosis membrane bioreactor (FOMBR); Membrane fouling; Soluble microbial products (SMP)