Crossing the Border between Laboratory and Field: Bacterial Quorum Quenching for Anti-Biofouling Strategy in an MBR

Environmental Science & Technology
Seonki LeeTaewoo Yi

Abstract

Quorum quenching (QQ) has recently been acknowledged to be a sustainable antifouling strategy and has been investigated widely using lab-scale membrane bioreactor (MBR) systems. This study attempted to bring this QQ-MBR closer to potential practical application. Two types of pilot-scale QQ-MBRs with QQ bacteria entrapping beads (QQ-beads) were installed and run at a wastewater treatment plant, feeding real municipal wastewater to test the systems' effectiveness for membrane fouling control and thus the amount of energy savings, even under harsh environmental conditions. The rate of transmembrane pressure (TMP) build-up was significantly mitigated in QQ-MBR compared to that in a conventional-MBR. Consequently, QQ-MBR can substantially reduce energy consumption by reducing coarse bubble aeration without compromising the effluent water quality. The addition of QQ-beads to a conventional MBR substantially affected the EPS concentrations, as well as microbial floc size in the mixed liquor. Furthermore, the QQ activity and mechanical stability of QQ-beads were well maintained for at least four months, indicating QQ-MBR has good potential for practical applications.

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Citations

Nov 24, 2016·Environmental Microbiology·Chuan Hao TanScott A Rice
Jan 14, 2020·Applied Microbiology and Biotechnology·E PaluchK Jermakow
Jun 30, 2019·Microbial Ecology·So-Yeon JeongTae Gwan Kim
Aug 28, 2020·Frontiers in Bioengineering and Biotechnology·Ying XiaoJie Liu
Apr 26, 2019·Journal of Industrial Microbiology & Biotechnology·Safiye Selen ÖzcanChristine M Foreman
Nov 18, 2018·Microbial Cell Factories·Wah Seng See-TooKok-Gan Chan
Feb 13, 2017·Environmental Science and Pollution Research International·Muhammad AslamJeonghwan Kim
May 23, 2018·International Journal of Environmental Research and Public Health·Albert SolerSusana Serrano
Apr 16, 2019·Frontiers in Microbiology·Michael SchwabMikael Elias
May 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S AhmedA Justin
Nov 11, 2019·The Science of the Total Environment·Zahid Ur RehmanTorOve Leiknes
Feb 13, 2021·Marine Drugs·Andrea MurasAna Otero
Jun 12, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Yin CuiManjun Zhan
Jan 24, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Sejin JungJinkee Lee
Dec 6, 2021·The Science of the Total Environment·Ashish Sengar, Arya Vijayanandan
Jan 20, 2020·The Science of the Total Environment·Naga Raju Maddela, Fangang Meng

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