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    金艳, 张永红, 宋兴福, 连伟, 何化, 于建国. 耐盐菌MBR系统处理页岩气采出水性能及膜污染特性[J]. 华东理工大学学报(自然科学版), 2020, 46(6): 730-736. DOI: 10.14135/j.cnki.1006-3080.20190606001
    引用本文: 金艳, 张永红, 宋兴福, 连伟, 何化, 于建国. 耐盐菌MBR系统处理页岩气采出水性能及膜污染特性[J]. 华东理工大学学报(自然科学版), 2020, 46(6): 730-736. DOI: 10.14135/j.cnki.1006-3080.20190606001
    JIN yan, ZHANG Yonghong, SONG Xingfu, LIAN Wei, HE Hua, YU Jianguo. Performance and Membrane Fouling of Produced Water from Shale Gas Treated by MBR System with Salt-Tolerant Bacteria[J]. Journal of East China University of Science and Technology, 2020, 46(6): 730-736. DOI: 10.14135/j.cnki.1006-3080.20190606001
    Citation: JIN yan, ZHANG Yonghong, SONG Xingfu, LIAN Wei, HE Hua, YU Jianguo. Performance and Membrane Fouling of Produced Water from Shale Gas Treated by MBR System with Salt-Tolerant Bacteria[J]. Journal of East China University of Science and Technology, 2020, 46(6): 730-736. DOI: 10.14135/j.cnki.1006-3080.20190606001

    耐盐菌MBR系统处理页岩气采出水性能及膜污染特性

    Performance and Membrane Fouling of Produced Water from Shale Gas Treated by MBR System with Salt-Tolerant Bacteria

    • 摘要: 利用耐盐菌降解页岩气采出水中有机物和氨氮,分别考察了缺氧反应器-膜生物反应器(AR-MBR)和单独膜生物反应器(MBR)的处理性能和膜污染特性。研究结果表明,AR-MBR系统的处理能效优于单独MBR,总有机碳(TOC)去除率分别为88%和80%,氨氮去除率分别为90%和75%,并且AR-MBR的跨膜压差(TMP)上升相对缓慢,AR-MBR总膜污染速率比MBR中的总膜污染速率小,主要原因一方面是AR-MBR中菌絮体粒径相比MBR中的菌絮体粒径更大,不易堵塞膜孔;另一方面是AR-MBR中溶解性微生物代谢产物(SMP)和微生物胞外聚合物(EPS)含量较低,而蛋白质与多糖的质量浓度比值较高,膜污染物质减少缓解了膜污染现象。

       

      Abstract: The salt-tolerant bacteria were used to degrade the organic matter and ammonia nitrogen in the shale field produced water. The degradation performance and membrane fouling characteristics of the anoxic reactor-membrane bioreactor (AR-MBR) as well as the separate MBR reactor were investigated. The difference between the two reactors was that the AR-MBR system was provided with a filament filler to form an anoxic circumstance in front of the MBR reactor. The results showed that the degradation of the AR-MBR combined reaction system was better than that of the MBR reactor alone. The removal efficiencies of TOC were 88% in AR-MBR and 80% in MBR, respectively. The removal efficiencies of ammonia nitrogen were 90% in AR-MBR and 75% in MBR, respectively. The rising of transmembrane pressure (TMP) and the total membrane fouling rate of the AR-MBR were slower than those of the MBR reactor. The main reason was that the particle size of the floc in the AR-MBR reactor was larger than that in the MBR reactor, which was not easy to block the membrane pores. On the other hand, the mass concentrations of soluble microbial products (SMP) and extracellular polymeric substances (EPS) in AR-MBR reactor were lower than those of the MBR reactor, while the mass concentration ratio of protein to polysaccharide (\rho _\rmPN\rm/\rho _\rmPS) was higher, the reduction of fouling substance on membrane alleviated the membrane fouling phenomenon.

       

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