globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2017.10.043
Scopus记录号: 2-s2.0-85039990557
论文题名:
High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor
作者: Huang C.; Liu W.-Z.; Li Z.-L.; Zhang S.-M.; Chen F.; Yu H.-R.; Shao S.-L.; Nan J.; Wang A.-J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130
起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Biofilm formed membrane filtration reactor ; Denitrification and desulfurization ; Removal of sulfide and nitrate ; S0 purity ; S0 recovery
Scopus关键词: Bacteria ; Biofilms ; Denitrification ; Desulfurization ; Efficiency ; Effluents ; Inorganic chemicals ; Membrane fouling ; Membranes ; Nitrates ; Pore size ; Recovery ; Sulfur compounds ; Contaminated wastewater ; De-sulfurization process ; Extracellular polymeric substance (EPSs) ; Membrane filtrations ; Operation conditions ; Recycling efficiency ; Sulfide concentration ; S^0 purity ; Microfiltration ; acetic acid ; nitrate ; sulfide ; sulfur ; nitric acid derivative ; sulfide ; sulfur ; bacterium ; bioactivity ; biodegradation ; biofilm ; biofiltration ; bioreactor ; chemical process ; denitrification ; efficiency measurement ; effluent ; exopolymer ; fouling ; inorganic compound ; nitrate ; purification ; recovery ; recycling ; sulfide ; sulfur ; wastewater treatment ; Article ; biofilm ; denitrification ; desulfurization ; fouling control ; nonhuman ; porosity ; priority journal ; solid ; Thauera ; waste water recycling ; bioreactor ; chemistry ; denitrification ; microbiology ; procedures ; recycling ; waste water ; Bacteria (microorganisms) ; Thauera ; Biofilms ; Bioreactors ; Denitrification ; Nitrates ; Recycling ; Sulfides ; Sulfur ; Waste Water
英文摘要: Elemental sulfur (S0) is always produced during bio-denitrification and desulfurization process, but the S0 yield and purification quality are too low. Till now, no feasible approach has been carried out to efficiently recover S0. In this study, we report the S0 generation and recovery by a newly designed, compact, biofilm formed membrane filtration reactor (BfMFR), where S0 was generated within a Thauera sp. strain HDD-formed biofilm on membrane surface, and then timely separated from the biofilm through membrane filtration. The high S0 generation efficiency (98% in average) was stably maintained under the operation conditions with the influent acetate, nitrate and sulfide concentration of 115, 120 and 100 mg/L, respectively, an initial inoculum volume of approximate 2.4 × 108 cells, and a membrane pore size of 0.45 μm. Under this condition, the sulfide loading approached 62.5 kg/m3·d, one of the highest compared with the previous reports, demonstrating an efficient sulfide removal and S0 generation capacity. Particular important, a solid analysis of the effluent revealed that the recovered S0 was adulterated with barely microorganisms, extracellular polymeric substances (EPSs), or inorganic chemicals, indicating a fairly high S0 recovery purity. Membrane biofilm analysis revealed that 80.7% of the generated S0 was accomplished within 45–80 μm of biofilm from the membrane surface and while, the complete membrane fouling due to bacteria and EPSs was generally observed after 14–16 days. The in situ generation and timely separation of S0 from the bacterial group by BfMFR, effectively avoids the sulfur circulation (S2− to S0, S0 to SO4 2−, SO4 2− to HS−) and guarantees the high S0 recovery efficiency and purity, is considered as a feasible approach for S0 recovery from sulfide- and nitrate-contaminated wastewater. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113060
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China

Recommended Citation:
Huang C.,Liu W.-Z.,Li Z.-L.,et al. High recycling efficiency and elemental sulfur purity achieved in a biofilm formed membrane filtration reactor[J]. Water Research,2018-01-01,130
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