T-154为载体的微乳液膜处理焦化厂含酚废水

Treatment of phenolic waste water of coking plant by microemulsion liquid membrane with T-154 as carrier

研究了以T-154为载体的P204/煤油/NaOH微乳液膜配方及其稳定性。采用该液膜体系处理含酚废水,探讨了载体浓度、分离时间、乳水比、油相的重复使用次数等对除酚率的影响。结果表明,微乳液膜不仅稳定性好,分离速度快,除酚效率高,而且可自动破乳,油相可重复使用。当T-154在油相中的质量浓度为5%,分离时间为20m in,乳水比为1∶4,废水的pH值为5时,一次性除酚率达99.95%。将该微乳体系用于处理某焦化厂中高浓度的含酚废水,一次性除酚率均高于97%,且对高浓度含酚废水的除酚效果更佳。

The formula and stability for microemulsion liquid membrane of P204/kerosene/NaOH with T- 154 as carrier have been studied. Through removal of phenol from waste water using this microemulsion system, different factors effecting on phenol removal such as the concentration of T-154, the separation time, the volume rate of microemulsion to waste water and the times of oil recycle et al. , were investigated. The experimental results showed that microemulsion liquid membrane exhibited several advantages including good stability, fast to separate, high efficiency of separation, ease of demulsification, and also the recovered oil phase can be recycled. The removal rate of phenol was 99.95 % primary when the concentration of T-154 in oil phase was 5% , the separation time was 20 min, the volume rate of microemulsion to waste water was 1 ： 4, pH value was 5. The microemulsion system was used to treat medium or high concentration phenolic waste water of a coking plant. The removal rate of phenol were more than 97% primary. It was better to that of high concentration.