title: A submerged membrane bioreactor with pendulum type oscillation (PTO) for oily wastewater treatment: membrane permeability and fouling control.
abstract: In this study, a novel submerged membrane bioreactor (SMBR) with pendulum type oscillation (PTO) hollow fiber membrane modules was developed to treat oily wastewater and control the problem of membrane fouling. To assess the potential of PTO membrane modules, the effect of oscillation orientation and frequency on membrane permeability was investigated in detail. The forces exerted on sludge flocs in the oscillating SMBR were analyzed to evaluate the impact of membrane oscillating on the cake layer resistance reduction. Results showed that the optimized PTO SMBR system exhibited 11 times higher membrane permeability and better fouling controllability than the conventional MBR system. By hydrodynamic analysis, it was found that the cooperative effect of bubble-induced turbulence and membrane oscillation in PTO SMBR system generated strong shear stress at liquid-membrane interface in vertical and horizontal direction and effectively hindered the particles from depositing on membrane surface.
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Qin
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Fan
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Lusheng
authors.initials: L
authors.lastname: Xu
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China. Electronic address: guoliangz@zjut.edu.cn.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Guanghui
authors.initials: G
authors.lastname: Wang
authors.affiliation: Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Dexin
authors.initials: D
authors.lastname: Wu
authors.affiliation: Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
authors.forename: Xuwei
authors.initials: X
authors.lastname: Long
authors.affiliation: Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China. Electronic address: mengq@zju.edu.cn.
authors.forename: Qin
authors.initials: Q
authors.lastname: Meng
mesh_terms: D001673:Biodegradation, Environmental; D057219:Biofouling / Q000517:prevention & control*; D057919:Biological Oxygen Demand Analysis; D001704:Biopolymers / Q000737:chemistry; D019149:Bioreactors; D005427:Flocculation; D057927:Hydrophobic and Hydrophilic Interactions; D008567:Membranes, Artificial; D009821:Oils / Q000302:isolation & purification*; D010316:Particle Size; D010539:Permeability; D012722:Sewage; D033081:Shear Strength; D013314:Stress, Mechanical; D013997:Time Factors; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D001704:Biopolymers; D008567:Membranes, Artificial; D009821:Oils; D012722:Sewage; D062065:Wastewater
keywords: Fouling control; Oily wastewater; Pendulum type oscillation (PTO); Permeability; Submerged membrane bioreactor (SMBR)