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 transporters and nitrogen metabolism was found in MBBF-SMBR biofilm, implying that this system has significant industrial application potential for organics removal from SGW.
Efficient removal of organic compounds from shale gas wastewater by coupled ozonation and moving-bed-biofilm submerged membrane bioreactor / Liu, Xinyu; Tang, Peng; Liu, Yuanhui; Xie, Wancen; Chen, Chen; Li, Tong; He, Qiping; Bao, Jin; Tiraferri, Alberto; Liu, Baicang. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - 344(2022), p. 126191. [10.1016/j.biortech.2021.126191]
Titolo: | Efficient removal of organic compounds from shale gas wastewater by coupled ozonation and moving-bed-biofilm submerged membrane bioreactor | |
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Data di pubblicazione: | 2022 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.biortech.2021.126191 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2935025