超声_臭氧组合工艺降解乐果农药废水的实验研究.pdf

4 12 环境 工程学 报 Vol. 4, No. 12 2 0 1 0 1 2 Ch inese Journal of Environm entalEngineering Dec. 2 0 1 0 / 王利平 汪亚奇 蔡 华 陈毅忠 ( , 2131 4) ( US) /( O ), pH O COD 3 3 , ( 40 W ) US O , US O , 3 3 ; , , : 5 LpH 3O 520 mg /L 150m in COD 4 000 mg /L, COD 3 290 % , B /C 020 035: , , X7031 A 1 739108( 2010) Experimental research on degradation of dimethoate pesticide wastewater by ultrasonic/ ozone combined process W ang Liping W ang Yaqi CaiHua Chen Y izhong ( School of Environm ental and Safety Eng ineering, ChangzhouU niversity, Changzhou 2131 4, China) Abstract U ltrason ic (U S) and ozone ( O ) combined process w as used in th is study to degrade dmi e 3 thoate pesticidew astew ater. The effects of pH value, O flow, reaction tmi e and in itial concentration on the treat 3 ment efficiency w ere investigated. The resu lts show ed that the treatment efficiency ofUS ( frequency conversion, 40 W ) /O comb ined processw as h igher than singleUS or O , and they had obvious synergistic effect. Smi ulated 3 3 dmi ethoate pesticide w astew aterw as stud ied first to determ ine process param eters, then treatment effect of real w astew aterw as stud ied and the processparametersw ere optmi ized. The best cond itionsw ere w ater yield 5 L, pH 3, O flow 520 mg /L, reaction tmi e