二重管充てん塔における酸素移動 : 物質移動容量係数に対する諸因子の影響

概要

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The effects of air flow rate, liquid viscosity, packing height, temperature, antifoam agent concentration and dead cell concentration on the volumetric mass transfer coefficient of oxygen, K_Lα, were investigated by using a cylindrical double pipe packed tower with high treatment efficiency of waste water. The K_Lα values were proportional to the superficial gas velocity raised to 0.78th power and were inversely proportional to the liquid viscosity raised to 0.25 th power. The K_Lα values increased with the increase of temperature or packing height, while they decreased with the addition of antifoam agent or contamination by dead cells. The effect of antifoam agent was more than that of dead cells, and the K_Lα values were about 50 per cent of those of water, when the concentraitons of antifoam agent were over 5 ppm. It was found that the aeration of this system was more effective than other systems.
社団法人日本生物工学会の論文
1977-09-25