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

Seonki Lee; Seung Kook Park; Hyeokpil Kwon; Sang Hyun Lee; Kibaek Lee; Chang Hyun Nahm; Sung Jun Jo; Hyun Suk Oh; Pyung Kyu Park; Kwang Ho Choo; Chung Hak Lee; Taewoo Yi

doi:10.1021/acs.est.5b04795

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

Seonki Lee, Seung Kook Park, Hyeokpil Kwon, Sang Hyun Lee, Kibaek Lee, Chang Hyun Nahm, Sung Jun Jo, Hyun Suk Oh, Pyung Kyu Park, Kwang Ho Choo, Chung Hak Lee, Taewoo Yi

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

141 Scopus citations

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.

Original language	English
Pages (from-to)	1788-1795
Number of pages	8
Journal	Environmental Science and Technology
Volume	50
Issue number	4
DOIs	https://doi.org/10.1021/acs.est.5b04795
State	Published - 16 Feb 2016

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

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.",

author = "Seonki Lee and Park, {Seung Kook} and Hyeokpil Kwon and Lee, {Sang Hyun} and Kibaek Lee and Nahm, {Chang Hyun} and Jo, {Sung Jun} and Oh, {Hyun Suk} and Park, {Pyung Kyu} and Choo, {Kwang Ho} and Lee, {Chung Hak} and Taewoo Yi",

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T2 - Bacterial Quorum Quenching for Anti-Biofouling Strategy in an MBR

AU - Lee, Seonki

AU - Park, Seung Kook

AU - Kwon, Hyeokpil

AU - Lee, Sang Hyun

AU - Lee, Kibaek

AU - Nahm, Chang Hyun

AU - Jo, Sung Jun

AU - Oh, Hyun Suk

AU - Park, Pyung Kyu

AU - Choo, Kwang Ho

AU - Lee, Chung Hak

AU - Yi, Taewoo

PY - 2016/2/16

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N2 - 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.

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

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