摘要
用不稳定传质模型对鼓泡填料塔中水和污水氧传递进行了理论分析 ,通过定义表面更新速率和含气率导出了鼓泡填料塔中水和污水中氧传递系数与操作条件和填料特征之间的关系式 ,并通过实验确定了关系式中特征参数 .用关系式计算得到的氧传递系数与实测值基本吻合 ,最大偏差为 2 0 % .结果表明 :采用的组合型填料具有优良的氧传递性能 ;
The features of oxygen transfer in water and restaurant wastewater in bubbling packed tower were studied theoretically and experimentally. Equations for calculating liquid-phase volumetric oxygen transfer coefficient in the bubbling packed tower were obtained by defining the rate of interface renewal and correlating experimental data. The deviation of calculated values from the experimental result is within 20%. The results show that the new-style combined packing is superior to other kinds of packing in oxygen transfer, and the comparison of oxygen transfer in water with that in restaurant wastewater under the same conditions show that the volumetric oxygen transfer coefficients in restaurant wastewater are smaller than those in water.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2003年第8期1049-1054,共6页
CIESC Journal
关键词
鼓泡填料塔
水/餐厅污水
氧传递
Biochemical oxygen demand
Bubble columns
Calculations
Mass transfer
Oxygen
Packed beds
Water
