城市污泥好氧发酵菌种放线菌的初步筛选

目的：微生物好氧发酵处理城市污泥是解决我国大中城市污水厂污泥的一种切实可行的方法，放线菌在其中起关键作用，该研究尝试分离筛选降解污泥的放线菌。方法：采用菌种分离方法，淀粉、蛋白质、纤维素水解实验进行进一步筛选。结果：从城市污泥中筛选到8个放线菌菌株。这些菌株对淀粉、蛋白质和纤维素都有一定的水解能力，其中A1和A7菌株分解淀粉和蛋白质的能力都比较强，淀粉水解实验的透明圈Up值分别为9．0和11．1，明胶液化程度也最高。A7和A8菌株分解纤维素的能力较强，透明圈Up值均为4．0。结论：A1、A7和A8菌株可以应用于城市污泥的好氧发酵。

Isolation of Actinomycete Strains for Sewage Sludge Aerobic Fermentation

Objective:Sewage sludge can become organic fertilizer through microorganism aerobic fermentation.This is a very useful approach to deal with the sewage sludge.Actinomycetes play the key roles in this process.Method:This paper used the strains screening method and protein,starch and cellulose hydrolyzation experiments to separate Actinomycete strains.Result:Eight actinomycete strains were isolated from the sewage sludge collected from different waste water treatment plants,all these strains had the ability to hydrolyze starch,protein and cellulose.Strains A1 and A7 are more suitable for hydrolyzing of starch and protein,and strains A7 and A8 are more suitable for cellulose.Conclusion:Strains A1,A7 and A8 can be used to treat sludge through aerobic fermentation.