Treatment of Phenol Wastewater of Coking Plant by Microemulsion Liquid Membrane with P_(204) as Carrier
The formula and stability for microemulsion liquid membrane of Span80/kerosene/NaOH with P204 as carrier was studied.Various impacting factors on phenol removal including mass ratio of P204 to Span80,volume ratio of microemulsion to wastewater,extraction time and oil recycle times were investigated through extraction test to phenol from wastewater.Results showed that the microemulsion liquid membrane that is stable and fast to mass-transfer was used to treat medium or high concentration phenolic wastewater,with efficiency over 99% under the optimal conditions.