投配率对连续两相厌氧发酵酸化效果的影响  

Effect of dosing rate on continuous two-phase anaerobic fermentation acidification process

作　　者：罗立娜[1] 李文哲[1] 王忠江[1] 肖佳月[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》2010年第10期116-120,共5页Journal of Northeast Agricultural University

基　　金："十一五"国家科技支撑计划项目(2006BAD7A10);国家"863"高技术研究发展计划项目(2007AA100705);黑龙江省科技厅重点攻关项目(GB06B502)

摘　　要：采用自行设计的连续两相厌氧发酵小试装置,研究投配率对牛粪酸化效果的影响。探讨了投配率分别为50%、33%、20%和14%,对挥发性脂肪酸总量及成分的影响规律。结果表明,投配率为33%组的挥发酸总量最高,达13 701.67 mg.L-1,当投配率在14%~33%范围内变化时,挥发酸总量先随着投配率的增加而升高,但投配率增加到50%时挥发酸总量下降;各组的乙酸与丁酸之和百分含量均在80%以上,属于丁酸型发酵;投配率的变化影响挥发酸总量的变化,但不会引起产酸发酵类型的改变。Influence of dosing rate on acidification of cow dung was studied in self-designed two-phase anaerobic fermentation test equipment.The content and components of volatile fatty acids were discussed with dosing rate at respectively 50%,33%,20% and 14%,the results showed that dosing rate of 33% group obtained the highest content of volatile acids,up to 13 701.67 mg.L-1,with the increasing dosing rate,the content of volatile acids first increased,but lowed when the dosing rate was added up to 50%;the percentage composition of acetic acid and butyric acid exceeded 80% belonging to butyric acid type fermentation;dosing rate influenced the content of volatile acids but had no effect on acidification fermentation type.

关 键 词：连续 投配率 酸化 挥发酸 厌氧发酵 

分 类 号：S216.4[农业科学—农业机械化工程]