脉冲电絮凝法处理黄连素制药废水

采用脉冲电絮凝方法对黄连素制药废水进行处理，比较了其与传统电絮凝的能耗差距，考察了占空比、电流密度、脉冲频率、电极间距及反应时间对处理效果的影响. 结果表明:与传统电絮凝相比，脉冲电絮凝法节能优势明显，其能耗仅为传统电絮凝法的20%；在最优反应条件(占空比为0.3，脉冲频率为1.0 kHz, 电流密度为19.44 mA/cm2，电极间距为2.0 cm，反应时间210 min)下，模拟废水中COD_Cr和黄连素的去除率分别达到69.6%和72.8%；采用最优条件处理实际废水，其COD_Cr与黄连素的去除率分别为62.6%和92.1%. 

Treatment of Berberine Hydrochloride Pharmaceutical Wastewater by Pulse Electro-coagulation

Pulse electro-coagulation (PE) technology was applied to the treatment of berberine hydrochloride pharmaceutical wastewater. A comparison between pulse electro-coagulation and traditional electro-coagulation (EC) was carried out, and the influences of pulse duty cycle, current density, pulse frequency, electrode distance, and electrolysis time on the removal efficiencies of berberine hydrochloride and COD_Cr were investigated. The results indicated that the energy cost by PE decreased 80% in comparison with that of EC. Under the optimal conditions of duty cycle of 0.3, pulse frequency of 1.0 kHz, current density of 19.44 mA/cm², electrode distance of 2.0 cm, and reaction time of 210 min, the removal efficiencies of berberine hydrochloride and COD_Cr reached 72.8% and 69.6%, respectively. Under the above optimal conditions, real berberine hydrochloride wastewater was treated by PE; the removal efficiencies of berberine hydrochloride and COD_Cr reached about 92.1% and 62.6%, respectively.