盐度对MBR处理高氨氮废水的运行及微生物群落影响研究
作者:叶芳凝,石先阳
单位: 安徽大学资源环境与工程学院,安徽合肥,230601
关键词: MBR;高氨氮;盐度;微生物群落
分类号: X703.1
出版年,卷(期):页码: 2018,38(5):77-83

摘要:
 通过运行一体式好氧膜生物反应器(MBR),研究盐度的变化(0%-6%)对MBR高氨氮废水处理及其膜污染和微生物群落变化的影响。结果表明,随进水盐度增加MBR的NH4+-N去除率降低、氨氧化速率(AOR)下降;膜上污泥中胞外聚合物(EPS)的含量增加,跨膜压差(TMP)持续增加,膜污染速率加快;高通量测序结果证实0.5%盐度时MBR微生物群落最稳定,而高盐度导致其微生物群落多样性降低。
 An integrated aerobic membrane bioreactor (MBR) was operated. The effect of increasing salinity (0%-6%) on the treatment of high ammonia nitrogen wastewater and its membrane fouling and microbial community change in MBR were explored. The results showed that the ammonia removal rate and ammonia oxidation rate decreased with increasing in the salinity, but a reverse trend was observed for the content of extracellular polymer in membrane fouling, the transmembrane pressure difference and the membrane fouling rate. The results from high throughput sequencing demonstrated that the microbial community in MBR was the most stable at salinity of 0.5%, whereas high salinity might lead to decrease in the diversity of microbial community.

基金项目:
国家自然科学基金项目(51278001)

作者简介:

参考文献:
 [1]Chai L Y, Ali M, Min X B, et al. Partial nitrification in an air-lift reactor with long-term feeding of increasing ammonium concentrations[J]. Bioresour Technol Bioresource Technology, 2015, 185(3-4):134-42. 
[2]Aloui F, Fki F, Loukil S, et al. Application of combined membrane biological reactor and electro-oxidation processes for the treatment of landfill leachates[J]. Water Sci. Technol, 2009, 60(3):605-614. 
[3]Jin L, Deshuang Y, Peiyu Z. Comparison between MBR and A/O processes treating saline wastewater[J]. Desalin Water Treatation & Water Treatment, 2013, 51(19-21):3821-3825. 
[4]Mannina G, Capodici M, Cosenza A, et al. Sequential batch membrane bio-reactor for wastewater treatment: The effect of increased salinity.[J]. Bioresour TechnolBioresource Technology, 2016, 209(): 205-212.
[5]Jang D, Hwang Y, Shin H, et al. Effects of salinity on the characteristics of biomass and membrane fouling in membrane bioreactors[J]. Bioresour TechnolBioresource Technology, 2013, 141(4):50-56. 
[6]Hu D, Zhou Z, Shen X, et al. Effects of alkalinity on membrane bioreactors for reject water treatment: Performance improvement, fouling mitigation and microbial structures.[J]. Bioresour TechnolBioresource Technology, 2015, 197():217-226. 
[7]Cortés-Lorenzo C, Rodríguez-Díaz M, Sipkema D, et al. Effect of salinity on nitrification efficiency and structure of ammonia-oxidizing bacterial communities in a submerged fixed bed bioreactor[J]. Chem Eng JChemical Engineering Journal, 2015, 266(6):233-240.
[8]王铸. 膜生物反应器处理高氨氮废水及其微生物学特性研究[D]. 城市南京:南京大学, 2015.
[9]Li X Y, Yang S F. Influence of loosely bound extracellular polymeric substances (EPS) on the flocculation, sedimentation and dewaterability of activated sludge.[J]. Water Research, 2007, 41(5):1022-1030. 
[10]安莹, 王志伟, 李彬, 等. 盐度冲击下MBR污泥SMP和EPS的三维荧光光谱解析[J]. 中国环境科学, 2014, 34(7):1754-1762.
[11]Liu Y, Liu Z, Zhang A, et al. The role of EPS concentration on membrane fouling control: Comparison analysis of hybrid membrane bioreactor and conventional membrane bioreactor[J]. Desalination, 2012, 305(9):38-43.
[12]Omar S, María C, Estrella A, et al. Nitrification rates in a saline medium at different dissolved oxygen concentrations [J]. Biotechnol LettBiotechnology Letters, 2001, 23(19):1597-1602. 
[13]Wang Z C, Gao M C, Ren Y, et al. Effect of hydraulic retention time on performance of an anoxic–aerobic sequencing batch reactor treating saline wastewater[J]. Int J Environ Sci TechnolInternational Journal of Environmental Science & Technology, 2015, 12(6):2043-2054.
[14]Zichao W, Mengchun G, Zhe W, et al. Effect of salinity on extracellular polymeric substances of activated sludge from an anoxic-aerobic sequencing batch reactor.[J]. Chemosphere, 2013, 93(11):2789-2795. 
[15]Shen R, Sheng G P, Yu H Q. Determination of main components in the extracellular polymeric substances extracted from activated sludge using a spectral probing method.[J]. Coll Environm & Biol EngnColloids & Surfaces B Biointerfaces, 2012, 94(94):151-156.
[16]Zhang Z J, Chen S H, Wang S M, et al. Characterization of extracellular polymeric substances from biofilm in the process of starting-up a partial nitrification process under salt stress.[J]. Appl Microbiol BiotechnolApplied Microbiology & Biotechnology, 2011, 89(5):1563-1571.
[17]Hou J, Miao L, Wang C, et al. Effect of CuO nanoparticles on the production and composition of extracellular polymeric substances and physicochemical stability of activated sludge flocs[J]. Bioresour TechnolBioresource Technology, 2015(a), 176: 65-70.
[18]Zhu W, Gan L, Li J, et al. Response of performance and ammonia oxidizing bacteria community to high salinity stress in membrane bioreactor with elevated ammonia loading[J]. Bioresour TechnolBioresource Technology, 2016, 216():714-721. 
 

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