Application of Encapsulated Quorum Quenching Strain Acinetobacter pittii HITSZ001 to a Membrane Bioreactor for Biofouling Control

Separations

article

Yongmei Wang¹  Xiaochi Feng¹  Wenqian Wang¹  Hongtao Shi¹  Zijie Xiao¹  Chenyi Jiang¹  Yujie Xu¹  Xin Zhang¹  Nanqi Ren¹ 

[1] State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology;Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering

关键词: membrane bioreactor;    quorum quenching;    quorum sensing;    membrane biofouling;    Acinetobacter pittii;    bacterium immobilization;   

DOI  :  10.3390/separations10020127

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Quorum quenching (QQ) is a novel anti-biofouling strategy for membrane bioreactors (MBRs) used in wastewater treatment. However, actual operation of QQ-MBR systems for wastewater treatment needs to be systematically studied to evaluate the comprehensive effects of QQ on wastewater treatment engineering applications. In this study, a novel QQ strain, Acinetobacter pittii HITSZ001, was encapsulated and applied to a MBR system to evaluate the effects of this organism on real wastewater treatment. To verify the effectiveness of immobilized QQ beads in the MBR system, we examined the MBR effluent quality and sludge characteristics. We also measured the extracellular polymeric substances (EPS) and soluble microbial products (SMP) in the system to determine the effects of the organism on membrane biofouling inhibition. Additionally, changes in microbial communities in the system were analyzed by high-throughput sequencing. The results indicated that Acinetobacter pittii HITSZ001 is a promising strain for biofouling reduction in MBRs treating real wastewater, and that immobilization does not affect the biofouling control potential of QQ bacteria.

【 授权许可】

CC BY