电化学氧化法处理高浓度氨氮废水的实验研究

摘要

采用电化学氧化对模拟高氨氮废水进行预处理，考察了不同电极材料、电流密度、氯离子浓度和pH值等因素对氨氮去除效果的影响。研究结果表明，高电流密度和氯离子浓度有利于氨氮的去除，试验得到的适宜电解氧化条件为：电流密度15mA／cm3，氯离子浓度4000mg／L，采用Ti／RuO2～IrO2电极为阳极，电解2h。当初始氨氮浓度为500mg／L时，氨氮去除率可达99．9％。%By choosing electrochemical oxidation of simulated high strength ammonia wastewater, and investigating the effects on ammonia removal of different electrode materials, current density, chloride concentration and ph and other factors, the ex- periment shows that high current density and chloride concentration profit for the removal of ammonia nitrogen. Electrolytic oxidation condition goes as follows： current density is 15 mA/cm2and chloride concentration is 4 000 mg/L using Ti/RuOz-IrO2 electrode as ＇after electrolysis for 2 hours, ammonia nitrogen removal rate will