Biological treatment of fracturing waste liquid in a membrane-coupled internal circulation aerobic biological fluidized bed with the assistance of coagulation. Issue 24 (17th December 2017)

• Record Type: Journal Article
• Authors: Tu, Yizhou; Liu, Xing-peng; Li, Hui-qiang; Yang, Ping
• Is Part Of: Environmental technology. Volume 38:Issue 24(2017)
• Page Start: 3074
• Page End: 3083
• Publication Date: 2017-12-17
• Subjects: Fracturing waste liquid -- coagulation -- membrane coupled -- internal circulation aerobic biological fluidized bed -- biological treatment; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2017.1290141
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: Fracturing waste liquid (FWL) is generated during shale gas extraction and contains high concentrations of suspended solid, salinity and organic compounds, which needs proper management to prevent excessive environmental disruption. Biological treatment of the FWL was attempted in this study using a membrane-coupled internal circulation aerobic biological fluidized bed (MC-ICABFB) after being treated by coagulation. The results showed that poly aluminum chloride (PAC) of 30 g/L, polyacrylamide (PAM) of 20 mg/L and pH of 7.0 were suitable choices for coagulation. The pretreated FWL mixed with synthetic wastewater at different ratios were used as the influent wastewater for the reactor. The MC-ICABFB had relatively good performance on COD and NH4 + -N removal and the main residual organic compound in the effluent was phthalates according to the analysis of GC-MC profiles. In addition, a suitable pretreatment process for the FWL to facilitate biological treatment of the wastewater needs further research.