羊粪发酵生产生物有机肥工艺优化

Optimization of Bio Organic Fertilizer Production by Sheep Manure Fermentation

选择新鲜羊粪、水稻秸秆为原料发酵,研究生物有机肥生产的最佳工艺条件,以生物有机肥发酵过程中的有效活菌数为评价指标,在初始含水率、C/N、堆体大小、复合菌接种量、翻堆频率等单因素试验的基础上,进行了正交优化试验。结果表明,羊粪发酵生产生物有机肥的最佳工艺参数为初始含水率为50%,C/N为30∶1,堆体大小为2000kg,复合菌接种量为3‰,翻堆频率为3d/次。在此优化工艺下,羊粪发酵生产的生物有机肥有效活菌数高达1.84×10^(8)CFU/g^(-1)。

Fresh sheep manure and rice straw were selected as raw materials for fermentation,and the optimal process conditions for the production of bio organic fertilizer were studied.Taking the effective number of viable bacteria in the fermentation process of bio organic fertilizer as the evaluation index,the orthogonal optimization experi⁃ment was carried out on the basis of single factor experiments such as initial moisture content,C/N,pile size,inoculation amount of compound bacteria and turning frequency.The results showed that the optimum technological parameters for the production of bio organic fertilizer by sheep manure fermentation were as follows:the initial moisture content was 50%,C/N was 30∶1,the pile size was 2000kg,the inoculation amount of compound bacteria was 3‰,and the turning frequency was once/3d.Under this optimized process,the number of effective viable bacteria in sheep manure fermentation was as high as 1.84×10^(8)CFU/g^(-1).