超声波改性沸石去除油田废水COD的实验研究

Study on Removal of COD from Oilfield Wastewater Using Zeolite Modified by Ultrasonic Wave

为寻求廉价的吸附材料,本文利用了超声波改性沸石和活性炭处理油田废水中的COD进行吸附处理,讨论了吸附时间、投加量、废水的pH等影响因素对COD去除的影响,并对几种影响因素进行了正交实验设计.结果表明:当活性炭与改性沸石的质量比为1∶1,吸附时间为30min,pH为7时得到最佳COD去除率53.82%.考虑到成本问题,超声波改性沸石在油田废水处理方面具有较好的应用前景.

The removal of COD from oilfield wastewater with activated carbon and zeolite modified by ultrasonic wave was experimentally investigated. The effects of the adsorption time, the amount, the pH of wastewater on the removal rate of COD were studied.And the orthogonal experiment was designed through these effects. The result shows that, the optimum removal rate of COD is 53.82%, when the mass ratio of activated carbon and modified zeolite is 1 ： 1, and the time of ad- sorption is 30 min, the value of pH is 7. The modified zeolite has a good application prospect in treatment of oilfield waster- water considering of cost.