干湿耦合厌氧发酵工艺设计与发酵特性试验  

Wet and Dry Coupling Anaerobic Fermentation Process and Fermentation Characteristic Test

作　　者：李文哲[1] 罗立娜[1] 窦钰程[2] 徐名汉[1] 王小伟[1] 袁虎[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]黑龙江省农业机械工程科学研究院,哈尔滨150040

出　　处：《农业机械学报》2013年第5期148-153,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2011BAD15B04);国际科技合作项目(2010DFB606801)

摘　　要：针对目前大中型沼气工程存在原料单一及沼液沼渣处理难的问题,提出了干法发酵与湿法发酵相结合的干湿耦合厌氧发酵工艺,即畜禽粪便采用湿发酵,将湿法发酵产生的沼液沼渣与秸秆混合进行干法发酵。并研究了干湿耦合比例——沼液沼渣与秸秆比例(BRSR)及干法发酵渗滤液回流对发酵特性的影响,结果表明,随着湿干比例的增加启动时间缩短、产气量增加;干法发酵的渗滤液总固体质量分数为1%以下,达到了固液分离的效果,有利于循环利用和喷淋,解决了湿法厌氧发酵沼液沼渣处理难的问题,实现了沼液的循环利用。Abstract： According to the current problem of materials＇ singleness and biogas slurry and residue handling difficultly in large and medium-sized biogas engineering, wet and dry coupling anaerobic fermentation combined with dry and wet fermentation was put forward, namely wet fermentation used livestock and poultry manure as raw materials, and dry fermentation used mixture of straw and biogas slurry and residue from wet fermentation as fermentation substrate. The effect of wet and dry coupling ratio-biogas residue straw ratio and leachate recireulation on fermentation properties were studied, and the results show that with the increase of BRSR, start time is shorten and the biogas production increases. TS of leachate from dry fermentation is below 1% , achieves the effect of the solid-liquid separation, is conducive to leaehate recycling and spraying, solves the difficult problem of biogas slurry and residue treatment from wet anaerobic fermentation, and realizes the cyclic utilization of biogas slurry.

关 键 词：厌氧发酵 干湿耦合发酵 沼液沼渣与秸秆比例 发酵特性 

分 类 号：S216.4[农业科学—农业机械化工程]