摘要
采用水力空化技术的新方法降解水体中的有机污染物苯酚及二甲苯。实验研究了循环时间、苯酚初始浓度、二甲苯初始浓度等因素对降解率的影响以及水温、pH值随循环时间的变化。结果表明：苯酚、二甲苯的适宜初始浓度分别为28-38mg／L、2．9-3．6mg／L：水力空化技术适宜于处理微污染水；苯酚、二甲苯的降解率随循环时间呈线性关系，具有一级反应动力学特征；随循环时间的延长，废水的pH值可升高1个pH，水温增加18℃后趋于稳定，水温的升高会影响到苯酚、二甲苯的降解率。
A new method of hydrodynamic cavitation was applied to decompose phenol and xylene in wastewater. Effects of circulation - time , the initial concentration of phenol, the initial concentration of xylene on degradation and effects of circulation - time on water temperature and pH value were experimentally studied. The results show that the optimal concentration of phenol and xylene are 28 ~ 38 mg/ L and 2.9 ~ 3.6mg/ L respectively. Hydrodynamic cavitation is adapted to treat micro - polluted water. Phenol and xylene degradation efficiencies increase linearly with circulation - time in the first - order kinetics. With the circulation - time continuing, the water temperature improve about 18℃ and then become steady, pH values improve one pH. Phenol and xylene degradation efficiencies were infected by improvement of water temperature.
出处
《能源环境保护》
2007年第2期18-20,24,共4页
Energy Environmental Protection
关键词
水力空化
水处理
苯酚
二甲苯
hydrodynamic
cavitation
water treatment
phenol
xylene
