研究了阳离子聚丙烯酰胺与硅藻土配合施用对中生菌素发酵液的絮凝效果 ,以及几种关键因素对二者配合效果的影响。结果表明 ,硅藻土与阳离子聚丙烯酰胺配合施用的效果优于二者单独施用 ;配合施用过程中两剂的投料顺序、投料量对絮凝效果具有突出影响 ,采用先加入 0 .2 4g/L阳离子聚丙烯酰胺后加入 30 g/L硅藻土的程序 ,可获得理想的絮凝效果 ;在 p H值2～ 7的范围内 ,絮凝效果随 p H值的升高而增强 The flocculation effect of cationic polyacrylamide and diatomite on the fermentation of ceclastin was studied, and the effect of several key factors on the co-effect of the two was studied. The results showed that the effect of diatomite and cationic polyacrylamide was better than that of the two polyacrylamides. When the dosage of two agents was used in the process of application, the dosage of diatomite had a significant impact on flocculation effect. The procedure of adding 30 g / L diatomite after cationic polyacrylamide can obtain the ideal flocculation effect. When the value of p H is in the range of 2 to 7, the flocculation effect increases with the increase of p H value