膜片式微孔曝气生物反应器的实验

为了适应在高营养、高密度、高溶氧、高粘度、低剪切条件下培养微生物和动植物细胞或组织的需要，研制了新型的膜片式曝气生物反应器。其关键部件是膜片微孔曝气分布器。对反应器进行了流动特性、压降、气含率等方面的研究，选取了最佳的膜片微孔曝气分布器。实验结果表明：这种生物反应器产生的气泡均匀，供氧效率高，混合性能好，且对介质无机械的剪切破坏作用，与机械搅拌生物反应器相比，可节约1／2的电能，可被广泛应用于中小型反应器。

Experimental study on membrance aeration bioreactor

In order to culture the cell of the microbe and flora or fauna, under the environment of rich nutrition, high density, rich dissolved oxygen, and high viscosity, a new membrane aeration bioreactor is developed. The key part is the distribution of membrane aeration bioreactor. The flow characteristic, pressure reduction, air-contained rate for the reactor which assembled many kinds of air distribution are studied, the best air distribution is chosen. The result indicate that this kind of membrane bioreactors can generate homogeneous air bubble, have high rate of oxygen supply, have good nature of blending and have no mechanical shear damage on mediator. Compared to mechanical string membrane bioreactor, the reactor can save about half of electric energy and can be widely used in medium and small-sized reactor.