Electrocoagulation(EC) treatment of petroleum cracking catalyst wastewater
The petroleum cracking catalyst wastewater contains high concentration of salinity and turbidity,and great variation is often observed in both character and flow rate.The wastewater was treated with electrocoagulation (EC) of aluminium anode.The parameters of initial pH,electrode distance,current intensity,and electrolysis time on treatment efficiency were optimized by the orthogonal experiment.Results showed that EC was an effective treatment technique for the petroleum cracking catalyst wastewater.For three different water samples,the removal rates of turbidity and suspended substance (SS) were above 97％ and 95％,respectively,the turbidity and SS of effluent after EC treatment were below 5 NTU and 15 mg/L under the optimal conditions that pH was 8,electrode distance was 1.5 cm,current density was 25 mA/cm2,electrolysis time was 40 min.The average power and aluminum anode consumption were 0.723 kW · h and 0.1497 kg,respectively for one ton wastewater.The EC process is suitable to treat the petroleum cracking catalyst wastewater and has good prospects in application for its favorable adaptability and maneuverability.
国家科技期刊平台
NSTL
万方数据
维普
