镀铜铁屑-H_2O_2催化氧化降解含酚废水

采用镀铜铁屑代替传统Fenton体系中的FeSO4作为催化剂,通过改变H2O2与镀铜铁屑的投加量、溶液的pH值、反应温度、反应时间等条件,研究了该体系对处理苯酚废水的影响。结果表明,常温下处理实际含酚印染废水,在pH值为4~6,30%H2O2 12mL/L,镀铜铁屑5g/L,反应时间为45min时,COD去除率可达96%,其CODCr从5827mg/L降至419mg/L,色度从2000降至30,符合国家三级排放标准。

Degradation of Wastewater Containing Phenol by Catalytic Oxidation of Copper-plated Scrap Iron and Hydrogen Peroxide

The optimum conditions of treating phenolic wastewater were investigated by changing amount of copper-plated scrap iron and hydrogen peroxide, pH values of solution, reaction temperature, and reaction time, and by using copper-plated scrap iron as catalyst instead of FeSO4 during the tradition Fenton process. The results showed that the COD removal efficiency could reach about 96% and CODcr of practical wastewater drop from 5827 mg/L to 419 mg/L while the chroma from 2000 to 30, reacting under the room temperature with 45 min, pH 4 ~ 6, 30% H2O2 12 mL/L and 5 g/L of the copper-plated scrap iron. The drain water could meet the standard of third grade.