Supercritical Water Oxidation of Phenolic Wastewater with Glycol

摘要

Phenolic wastewater is a typical kind of industrial effluents containing high toxicity and poor biodegradability. Huge quantities of polluted phenolic waters are formed through several chemical operations which includes coking, coal gasification, oil refineries, plastics, pesticides, steel and phenolic resin production. This paper deals with treatment of high concentrated phenolic wastewater by supercritical water oxidation method. The effects of H2O2 dosage, reaction time, temperature and concentration of glycol on removal efficiency of phenol were studied with laboratory bench-scale experiments. The results indicated that the removal process was more effective under the experimental conditions. The best removal efficiency of phenol reached 99.8%. This investigation will provide fundamental method for developing a pretreatment method of industrial phenolic wastewater with flexibility, simplicity and high activity.