接种量对牛粪分离液厌氧发酵特性影响  

Effect of inoculation concentration on anaerobic fermentation by solid-liquid separated solution of dairy manure

作　　者：关正军[1] 李文哲[1] 郑国香[1] 毕兰平[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《东北农业大学学报》2011年第5期63-67,I0002,共6页Journal of Northeast Agricultural University

基　　金：黑龙江省科技攻关项目(GA09B501)

摘　　要：利用研制的螺旋挤压分离机对稀释的牛粪进行分离,在中温(35±2)℃条件下,对分离液按照不同接种量(占发酵有效容积体积百分数为10%、20%、30%、40%、50%)进行厌氧发酵试验,发酵周期为20d,以VS(Volatile solid)产气率、COD(Chemical Oxygen Demand)去除率为考察指标,研究了接种量对牛粪分离液厌氧发酵特性的影响。结果表明,接种量为40%,VS产气率达到172.96L·kg-1,COD去除率为59.87%,试验结果对提高牛粪分离液厌氧发酵效率具有参考价值。Diluted dairy manure was separated by screwpress separator and trial of anaerobic fermentation was carried out according to different inoculation quantity of separated liquid at （35±2） ℃.Biogas yield of VS（volatile solid） and COD were selected as main inspected targets,effects of inoculation quantity on anaerobic fermentation of separated liquid of dairy manure were investigated when fermentation periods was controlled for 20 d.The results showed that biogas yield of VS and COD removal rate reached 172.96 L·kg-1 and 59.87%,respectively,when inoculation quantity was 40%,which would provide important reference value for increasing anaerobic fermentation rate of separated liquid of dairy manure.

关 键 词：鸡种量 牛粪 分离液 厌氧发酵 

分 类 号：S216.4[农业科学—农业机械化工程]