中文摘要：

引言 近年来，絮凝分离研究发展令人瞩目，其研究内容主要在新絮凝剂的制备、絮凝机理与性能的探讨及絮凝工艺较优条件的探索等方面，而对发酵液絮凝分离的微观过程研究国内外文献报道较少。

英文摘要：

In order to understand the flocculation and separation processes of fermentation broth and improve the separation efficiency, this paper, at a microscale, examined the influence of shearing force and size of floes in the flocculation process of fermentation broth on the effect of removing the floes by filtration. With micronomicin fermentation broth as the research target, the research changed the shearing force on the floes in the flocculation process. The size and size distribution of the floes under different shearing forces were measured within 0.02 2000 /~m with a laser particle size analyzer. The filtering rate and settling rate of the floes were determined. The experiment results showed that the size of the floes decreased with increasing shearing force and the size distribution span of the floes increased with increasing shearing force. The settling rate of the floes increased with increasing size of the flocs; under a moderate shearing force, the floes had a moderate size and size distribution span and a bigger compaction degree, and the filtering rate of the floes reached a maximum value. The experiment results indicated that the shearing force in the flocculation process evidently affected the size, size distribution span and compaction degree of the floes and affected the filtering rate and settling rate of the floes.