餐厨垃圾超高温水解酸化过程研究  

Hydrolytic Acidification of Kitchen Waste under Hyperthermal Condition

作　　者：李雪敏[1,2] 元毛毛 刘研萍[1,2] 袁海荣[1,2] 朱保宁[1,2] 李秀金[1,2] 邹德勋[1,2] 

机构地区：[1]北京化工大学环境科学与工程系,北京100029 [2]北京市高等学校环境污染控制与资源化工程研究中心,北京100029

出　　处：《中国沼气》2015年第3期23-26,共4页China Biogas

基　　金：高等学校博士学科点专项科研基金(20120010110004);北京市自然科学基金(8142030);中央高校基本科研业务费(ZY1301;JD1303)

摘　　要：文章在超高温（70℃）条件下,以厌氧混合污泥作为接种物,对餐厨垃圾水解酸化过程中气、液代谢产物组成及其变化规律进行了分析研究,并确定了其发酵类型。结果表明,其气相代谢产物主要为CO2（73.79%）及少量H2,水解酸化48 h的单位VS产气量为31.78 m L·g-1VS;液相中VFAs主要为乙酸和乙醇（77.91%~89.06%）,在水解酸化过程中乙酸含量变化较小,而乙醇增加较多,酸化结束时为初始的2.64倍;根据末端代谢产物种类和组成分析推测餐厨垃圾在超高温条件下的水解酸化类型为乙醇型发酵。With the mixed anaerobic digestion sludge as inoculum, the composition of metabolic products formed during the hydrolytic acidification of kitchen waste under hyperthermal condition（70℃ ）were investigated, and their varying regularity were analyzed. The result showed that the gas metabolites were maiuly the CO2 （73.79% and small amount of H2 ）. The gas production rate of 48-hour of hydrolysis acidification was 31.78 mL ~ g-I VS. The major products in liquid phase were mainly the ethanol and acetic acid （77.91% -89.06% ）. The acetic acid was relatively stable, but the ethanol increased much, which was 2.64 times that of origin. It was presumed that the hydrolytic acidification of kitchen waste under hyper- thermal condition was ethanol-type fermentation.

关 键 词：超高温 水解酸化 餐厨垃圾 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.4[农业科学—农业机械化工程]