摘要
研究了在旋转填料床中O3氧化处理染料废水。主要考察了超重力因子β、初始pH值和气液比等因素对脱色率的影响。试验结果表明,随着β的增大脱色率增大,β大于100后对脱色率增大不明显;脱色率随染料废水初始pH值增加呈先增大后略微下降的趋势;最佳初始pH值为10～11;气液比的增加有助于脱色率的提高。与传统O3气液反应设备相比,旋转填料床的高效传质特性可以提高O3的氧化功效和利用率,节约O3的消耗量。
In this paper, a novel rotating packed bed used in the ozone oxidative treatment of dye wastewater was investigated. Ozone oxidation experiments were conducted to examine the effects of various operation variables, including high gravity factors β, initial pH of dye wastewater and gas to liquid ratio on the decolorization efficiency. Experimental results indicated that the decolorization efficiency increased with increasing high gravity factors and ratio of gas to liquid ratio. However, the effect was not obvious at a high gravity factor higher than 100. The decolorization efficiency increased with increasing pH value initially, and then gently decreased. The optimal initial pH value was 10-11. Compared with conventional O3 contactors, a rotating packed bed could be used to increase the efficiency of the ozone oxidative treatment of dye wastewater, due to its high mass transfer characteristics.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2007年第4期542-545,共4页
Chemical Industry and Engineering Progress
关键词
超重力
旋转填料床
O3
染料废水
脱色率
high-gravity
rotating packed bed
ozone
dye wastewater
decolorization efficiency
