Efficient removal of organic compounds from shale gas wastewater by coupled ozonation and moving-bed-biofilm submerged membrane bioreactor

Xinyu Liu; Peng Tang; Yuanhui Liu; Wancen Xie; Chen Chen; Tong Li; Qiping He; Jin Bao; Alberto Tiraferri; Baicang Liu

doi:10.1016/j.biortech.2021.126191

Efficient removal of organic compounds from shale gas wastewater by coupled ozonation and moving-bed-biofilm submerged membrane bioreactor

Bioresour Technol. 2022 Jan;344(Pt A):126191. doi: 10.1016/j.biortech.2021.126191. Epub 2021 Oct 26.

Authors

Xinyu Liu¹, Peng Tang¹, Yuanhui Liu¹, Wancen Xie¹, Chen Chen², Tong Li³, Qiping He⁴, Jin Bao⁴, Alberto Tiraferri⁵, Baicang Liu⁶

Affiliations

¹ Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Institute of New Energy and Low-Carbon Technology, Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, Sichuan 610207, PR China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Section 2, Lingang Ave., Cuiping District, Yibin, Sichuan 644000, PR China.
² Litree Purifying Technology Co., Ltd., Haikou, Hainan 571126, PR China.
³ School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, PR China.
⁴ Chuanqing Drilling Engineering Company Limited, Chinese National Petroleum Corporation, Chengdu, Sichuan 610081, PR China.
⁵ Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy.
⁶ Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Institute of New Energy and Low-Carbon Technology, Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, Sichuan 610207, PR China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Section 2, Lingang Ave., Cuiping District, Yibin, Sichuan 644000, PR China. Electronic address: bcliu@scu.edu.cn.

PMID: 34710593
DOI: 10.1016/j.biortech.2021.126191

Abstract

Shale gas wastewater (SGW) with complex composition and high salinity needs an economical and efficient method of treatment with the main goal to remove organics. In this study, a coupled system consisting of ozonation and moving-bed-biofilm submerged membrane bioreactor (MBBF-SMBR) was comprehensively evaluated for SGW treatment and compared with a similar train comprising ozonation and submerged membrane bioreactor (SMBR) without addition of carriers attaching biofilm. The average removal rates of MBBF-SMBR were 77.8% for dissolved organic carbon (DOC) and 37.0% for total nitrogen (TN), higher than those observed in SMBR, namely, 73.9% for DOC and 18.6% for TN. The final total membrane resistance in SMBR was 40.1% higher than that in MBBF-SMBR. Some genera that specifically contribute to organic removal were identified. Enhanced gene allocation for membrane transport and nitrogen metabolism was found in MBBF-SMBR biofilm, implying that this system has significant industrial application potential for organics removal from SGW.

Keywords: Microbial community; Moving-bed-biofilm submerged membrane bioreactor (MBBF-SMBR); Ozonation; Shale gas wastewater (SGW); Submerged membrane bioreactor (SMBR).

MeSH terms

Biofilms
Bioreactors
Dissolved Organic Matter
Membranes, Artificial
Natural Gas
Ozone*
Waste Disposal, Fluid
Wastewater*

Substances

Dissolved Organic Matter
Membranes, Artificial
Natural Gas
Waste Water
Ozone