含氯苯废水的超声降解研究

Studies on the sonolysis of the wastewater containing chlorobenzene

以氯苯模拟废水为考察对象 ,研究其浓度、p H、超声时间等因素对氯苯超声降解效率的影响。实验结果表明 :超声反应时间小于 5 min,氯苯降解率很低 ;5～ 2 0 min,氯苯降解率成线性增大 ;超过 2 0 min后 ,氯苯降解率增大缓慢。 p H值的增大 ,氯苯降解率略有减小。水浴温度提高 ,氯苯降解率增大。反应时间小于 15 min,初始浓度低的溶液 ,降解率增加较快 ,反应时间大于 15 min,初始浓度高的溶液 ,降解率增加较快。

The sonolyses of chlorobenzene wastewater have been conducted. The effects of wastewater concentration, pH, irradiation time has been studied. The results show that the efficiencies of chlorobenzene are very low as the sononication time is less than 5 min. Then the efficiencies of chlorobenzene increase with the increasing of sononication time between 5～20 min linearly, with augmenting of original solution concentration, with the decreasing of pH and with the increasing of the temperature of water bath. Ultrasonic technique is a simple, rapid, effective and energy-saving method for the treatment of organic wastewater.