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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Effect of pure oxygen fine bubbles on the organic matter removal and bacterial community evolution treating coal gasification wastewater by membrane bioreactor
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Effect of pure oxygen fine bubbles on the organic matter removal and bacterial community evolution treating coal gasification wastewater by membrane bioreactor

机译：纯氧细气对膜生物反应器对煤气化废水处理煤气切除和细菌群落的影响

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A lab-scale study was investigated to evaluate the effect of pure oxygen fine bubbles on membrane bioreactor (O-2-MBR) performance of treating coal gasification wastewater. Compared with conventional MBR using aeration source of air (CMBR), the removal efficiencies of COD and total phenols increased by 28% and 36%, and the organic compositions of treated effluent represented significant difference that was mainly attributed to the controlled the foam expansion and enhanced the enzymatic activities in O-2-MBR. Moreover, membrane fouling mitigation was observed in O-2-MBR, probably owing to the less EPS amount and larger PSD. It was notable that the pure oxygen with fine bubbles promoted marked evolution of bacterial community from CMBR to O-2-MBR, particularly, the bacterial community richness and diversity in O-2-MBR was lower than CMBR, and the genera Phycisphaera, Comamonas, Thauera and Ohtaekwangia composed the top four most relative abundance genera in O-2-MBR, giving the total relative abundance of 26.7%. (C) 2016 Elsevier Ltd. All rights reserved.
机译：研究了实验室规模的研究，评价纯氧细气对处理煤气化废水的膜生物反应器（O-2-MBR）性能的影响。与常规MBR使用曝气空气源（CMBR）相比，鳕鱼和总酚的去除效率增加了28％和36％，处理过的流出物的有机组合物表示主要归因于受控泡沫膨胀和泡沫膨胀的显着差异增强了O-2-MBR的酶活性。此外，在O-2-MBR中观察到膜结垢减缓，可能由于较少的EPS量和较大的PSD。值得注意的是，具有细气泡的纯氧从CMBR到O-2-MBR促进了细菌群落的显着演变，特别是O-2-MBR中的细菌群落和多样性低于CMBr，以及Phycisphaera，Comamonas。 ，Thauera和Ohtaekwangia组成了O-2-MBR中最高的四个相对丰富的属，使得总相对丰度为26.7％。 （c）2016 Elsevier Ltd.保留所有权利。

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