title: Enhanced performance of a submerged membrane bioreactor with powdered activated carbon addition for municipal secondary effluent treatment.
abstract: The aim of this study was to investigate the feasibility of PAC-MBR process treating municipal secondary effluent. Two laboratory-scale submerged MBRs (SMBR) with and without PAC addition were continuously operated in parallel for secondary effluent treatment. Approximately 63%TOC, 95% NH(4)(+)-N and 98% turbidity in secondary effluent were removed by the PAC-MBR process. Most organics in the secondary effluent were found to be low molecular weight (MW) substances, which could be retained in the reactor and then removed to some extent by using PAC-MBR process. Parallel experiments showed that the addition of PAC significantly increased organic removal and responsible for the largest fraction of organic removal. Membrane fouling analysis showed the enhanced membrane performance in terms of sustainable operational time and filtration resistances by PAC addition. Based on these results, the PAC-MBR process was considered as an attractive option for the reduction of pollutants in secondary effluent.
authors.affiliation: College of Geography and Environmental Sciences, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua, Zhejiang Province 321004, PR China. hjlin@zjnu.cn
authors.forename: Hongjun
authors.initials: H
authors.lastname: Lin
authors.forename: Fangyuan
authors.initials: F
authors.lastname: Wang
authors.forename: Linxian
authors.initials: L
authors.lastname: Ding
authors.forename: Huachang
authors.initials: H
authors.lastname: Hong
authors.forename: Jianrong
authors.initials: J
authors.lastname: Chen
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Lu
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002244:Carbon / Q000737:chemistry*; D002606:Charcoal; D002681:China; D004867:Equipment Design; D005374:Filtration / Q000379:methods; D008567:Membranes, Artificial; D008970:Molecular Weight; D009930:Organic Chemicals / Q000737:chemistry; D011208:Powders; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D009930:Organic Chemicals; D011208:Powders; D014874:Water Pollutants, Chemical; D002606:Charcoal; D002244:Carbon