The effect of aeration mode on the operational effectiveness and membrane bioreactors for greywater treatment and membrane fouling

Chunhong Shi; Bo Yan; Xiangmeng Zuo; Cheng Wang; Zifu Li; Lixin Zhu

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자료유형: 학술저널

저자정보: Chunhong Shi (University of Science and Technology Beijing) Bo Yan (University of Science and Technology Beijing) Xiangmeng Zuo (University of Science and Technology Beijing) Cheng Wang (University of Science and Technology Beijing) Zifu Li (University of Science and Technology Beijing) Lixin Zhu (Nanjing Yanjiang Academy of Resources and Ecology Science)

저널정보: 대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제28권 제2호

발행연도: 2023.4

수록면: 195 - 212 (18page)

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This study aims to investigated the effect of aeration mode on membrane bioreactors (MBRs) using a self-designed integrated hollow fiber MBR and flat sheet organic MBR for rural greywater treatment. The pollutant removal efficiency, characteristics of activated sludge and mixed liquor, and mechanisms of membrane fouling were systematically analyzed under intermittent aeration and continuous modes. The results indicate that the permeability of MBRs in intermittent aeration mode is higher than that in the continuous aeration mode when operating at the same aeration rate. Due to the higher extracellular polymeric substance (EPS) and soluble microbial product (SMP) concentrations. The removal rates of TN and TP by both MBRs at the intermittent aeration mode were higher than those in the continuous aeration mode due to the difference in the aeration environment. Compared to the flat-sheet organic membrane, the hollow-fiber membrane surface was more likely to form biofilms, which cause biological fouling.The relative abundance of Thermomonas showed a positive correlation with the EPS concentration, indicating that Thermomonas participates in EPS synthesis. This study provides a theoretical basis for evaluating the influence of aeration modes on MBRs,and would be a useful guide for the better control of membrane fouling and treatment of rural greywater.

#Aeration mode #Membrane bioreactor #Membrane fouling

참고문헌 (59)

참고문헌 신청

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