title: Effect of macroporous adsorption resin-membrane bioreactor hybrid system against fouling for municipal wastewater treatment.
abstract: Membrane bioreactor (MBR) displays significant advantages in effluent quality, sludge production, footprint, and operation. However, membrane fouling limits the application of MBR. This study investigated membrane fouling in a macroporous adsorption resin-membrane bioreactor hybrid system established by adding macroporous adsorption resin (MAR) into MBR. MAR addition increased the critical flux by 27.97%, indicating that membrane fouling was successfully mitigated. Consequently, comparative experiments were designed to analyze the pathway. MAR addition mitigated external fouling development and improved mixed liquor characteristics, thereby mitigating gel layer formation and sludge floc deposition on the membrane surface. MAR effectively reduced the supernatant viscosity and dissolved COD by adsorbing soluble microbial products. Sludge production decreased because the sludge activity in MAR-MBR was inhibited. The fouled MAR could be regenerated effectively by deionized water and chemical cleaning. This work demonstrated the feasibility of using MAR-MBR to mitigate fouling in municipal wastewater treatment.
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Chen
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Luo
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.
authors.forename: Ruyi
authors.initials: R
authors.lastname: Cao
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.
authors.forename: Yuting
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China. Electronic address: jinrong_liu@126.com.
authors.forename: Jinrong
authors.initials: J
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D019149:Bioreactors; D008567:Membranes, Artificial; D012722:Sewage; D062065:Wastewater; D018508:Water Purification / Q000295:instrumentation / Q000379:methods
chemical_list: D008567:Membranes, Artificial; D012722:Sewage; D062065:Wastewater
keywords: Cation exchange resin; Fouling; Macroporous adsorption resin; Membrane bioreactor; Powdered activated carbon