title: Biological treatment of fracturing waste liquid in a membrane-coupled internal circulation aerobic biological fluidized bed with the assistance of coagulation.
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.
authors.affiliation: a College of Architecture and Environment , Sichuan University , Chengdu , China.
authors.forename: Yizhou
authors.initials: Y
authors.lastname: Tu
authors.affiliation: b College of Communication Engineering , Chengdu Technological University , Chengdu , China.
authors.forename: Xing-Peng
authors.initials: XP
authors.lastname: Liu
authors.affiliation: a College of Architecture and Environment , Sichuan University , Chengdu , China.
authors.forename: Hui-Qiang
authors.initials: HQ
authors.lastname: Li
authors.affiliation: a College of Architecture and Environment , Sichuan University , Chengdu , China.
authors.forename: Ping
authors.initials: P
authors.lastname: Yang
mesh_terms: D000180:Acrylic Resins / Q000032:analysis; D000332:Aerobiosis; D000536:Aluminum Hydroxide / Q000032:analysis; D019149:Bioreactors; D000067071:Hydraulic Fracking; D006863:Hydrogen-Ion Concentration; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry*; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D000536:Aluminum Hydroxide; D062065:Wastewater; D000099166:Polyacrylamides; C016213:aluminum oxychloride
keywords: Fracturing waste liquid; biological treatment; coagulation; internal circulation aerobic biological fluidized bed; membrane coupled