农业机械学报2011，Vol.42Issue(4)：105-109,5.
牛粪厌氧发酵污泥回流试验
Sludge Recycle Trial of Cattle Manure Anaerobic Fermentation
摘要
Abstract
In order to improve the efficiency of two-stage anaerobic fermentation system, the circulation process of sludge, composed of the activated sludge online and the activated sludge of the optimal period from storage tanks, was studied. Three factors, including feed concentration, day feeding quantities and sludge recycle ratio, were selected as independent variables, while COD removal rate and biogas production amount were as evaluating indicators. With the quadratic orthogonal rotating combinatorial method, the effects of different parameters on COD removal rate and biogas production amount were analyzed. The results showed that feed concentration, day feeding quantities and sludge recycle ratio were main influencing factors on two evaluating indication, and the mixed sludge recycle ratio had a significant effect. For the anaerobic fermentation system, the optimum parameters of process were feed concentration of 8. 21% , day feeding quantities of 7. 15 L/d and sludge recycle ratio of 30% , respectively.关键词
牛粪/厌氧发酵/污泥回流Key words
Cattle manure/ Anaerobic fermentation/ Sludge recycle分类
农业科技引用本文复制引用
夏吉庆,马添翼,毕经毅,郑国香,李文哲..牛粪厌氧发酵污泥回流试验[J].农业机械学报,2011,42(4):105-109,5.基金项目
黑龙江省自然科学基金资助项目(ZD200817)和东北农业大学博士启动基金资助项目(2009RC49) （ZD200817）
