Optimization of wastewater treatment process for coalbed methane extraction at different stages
A lot of wastewater would produce during the process of coalbed methane extraction,causing environmental pollu-tion.In order to achieve harmless treatment of waste water during coalbed methane extraction and reduce environmental pol-lution,different optimized treatment processes have been proposed based on the characteristics of coalbed methane extraction wastewater at different stages.The results show that for drilling wastewater,the"Fe/C microelectrolysis H2O2 coupling process"is proposed for treatment.For fracturing wastewater,the"microelectrolysis+Fenton oxidation+flocculation"process is proposed for treatment.For drainage wastewater,the"coagulation sedimentation+ion exchange+degassing+re-verse osmosis"process is proposed for treatment.After process optimization,the removal rates for different types of pollu-tants have significantly improved,thus meeting relevant requirements for discharge and water use.
coalbed methanedrilling wastewaterfracturing wastewaterdrainage and extraction wastewatertreatment process
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