旋转填料床中O_3/H_2O_2法处理TNT红水

O_3/H_2O_2 Oxidative Treatment of TNT Red-Water in a Rotating Packed Bed

研究了在旋转填料床中O3/H2O2法处理TNT红水的特性规律。考察了超重力因子β、O3/H2O2摩尔比、红水初始pH值、液气比等因素对红水化学需氧量(COD)去除率的影响。结果表明,随着pH值的增大超重力因子β对COD去除率的影响增大,β大于100后COD去除率增大趋势变缓;最佳初始pH值为11左右;H2O2与O3最优摩尔比为1左右;COD去除率随液气比增大呈先增大后减小的趋势,适宜的液气比为0.25。

The specific property of the O3/H2O oxidative treatment of TNT red-water in a rotating packed bed was investigated. The experiments were carried out to examine the effect of various operating variables, such as high gravity factors t, the molar ratios of H2O2 to O3,initial pH value of red-water and ratio of liquid to gas on the removal efficiency of COD in red-water. The results show that the effect of high gravity factors on the removal efficiency of COD in red-water increases with increasing of initial pH value of red-water. However,the effect is not obvious as high gravity factors are higher than 100. And the removal efficiency of COD increases with increasing of ratio of liquid to gas, then decreases with increasing of ratio of liquid to gas. The optimum process conditions are found when the initial pH value is about 11, the molar ratio of H2O2 to O3 is about 1, and the ratio of liquid to gas is about 0.25.