摘要
针对2,4-二氨基甲苯废水难降解的缺点,采用超临界水氧化法降解进行实验研究.实验结果表明,选用FeSO4.7H2O作为催化剂有较好的效果.通过对温度、压力、废水停留时间、催化剂用量等影响因素的研究,得出最优条件:pH值为3.5,氧化剂体积比为9%,温度选择450℃,压力为26.5MPa,时间为300s,催化剂用量10mg/L.最优条件下CODCr去除率为96.79%.
Aimed at the short coming that the degradation of wastewater with 2,4-diaminotoluene is diffi- cult, its degradation was experimentally investigated with supercritical water oxidation method. The experimental result showed that FeSO4 · 7H2O as a catalyst had better effect. It was obtained by investiga- tion of the influencing factor such as the temperature, pressure, retention time of wastewater, and catalyst dosage that the optimal working conditions would be as follows： the pH value was 3.5, antioxidant densi- ty-9%, temperature selected-450 ℃, pressure-26.5 MPa, retention time of wastewater 300 s, and catalyst dosage-10 mg/L. The optimal conditions were verified by repeated test and it was concluded that the COD removal rate would he 96.79 %.
出处
《兰州理工大学学报》
CAS
北大核心
2013年第3期57-60,共4页
Journal of Lanzhou University of Technology
关键词
TDA废水
超临界水氧化
化学需氧量
去除率
TDA wastewater
supercritical water oxidation
chemical oxygen demand~ removal rate
