CSTR反应器处理白酒酒糟的启动研究  

Study of CSTR Reactor Starting on Distillers Grains Wastewater Treatment

作　　者：蒋兴荣[1] 王双飞[2] 周敬红[2] 

机构地区：[1]广西大学环境学院,广西南宁530004 [2]广西大学轻工与食品工程学院,广西南宁530004

出　　处：《广西科学》2013年第4期335-340,共6页Guangxi Sciences

基　　金：广西科技攻关项目(桂科攻1211816-2B)资助

摘　　要：在中温条件（35℃）下,利用CSTR厌氧反应器半分批式启动处理白酒酒糟,对启动过程的工艺参数（如pH值,VFA等）进行研究.结果,CSTR反应器采用初始物料低容积负荷1.0kgVS/（m3·d）,并以负荷0.5kg VS/（m3·d）逐增的方式启动,当容积负荷在1.0～2.5kg VS/（m3·d）范围,厌氧系统单位容积日产气量基本保持在1.45L/（L·d）以上,甲烷含量稳定在60％左右,pH值稳定在6.9～7.3,VFA稳定在1000mg/L左右,COD去除率稳定在78.7％～93.7％.研究提高了糟渣的利用率及沼气产量,降低了反应器启动的成本,具有经济可行性.In mesophilic temperature conditions （35℃）,full-mix anaerobic digestion reactor CSTR（continuous stirred tank reactor） was used to treat distillers grains by semi-batch start,of which the parameters of start-up processing （such as pH,VFA,etc.） were studied.The results show that the CSTR reactor was started with low initial material volume load of 1.0kg VS/（m3 · d） and gradually increased by the rate of 0.5kg VS/（m3 · d）.When the range of volume load was 1.0 to 2.5kg VS/（m3 · d）,the daily biogas yield per unit volume kept in more than 1.45L/（L · d）,the content of methane stabilized at around 60%,pH value was stable at 6.9 to 7.3,VFA value stably kept in the vicinity of 1000mg/L and COD removal was stable at 78.7% to 93.7%.This study improved the utilization of distillers grains and biogas production,and reduced production costs of start-up processing,which might be feasible in economics.

关 键 词：酒糟 半分批式 日产气量 

分 类 号：TQ920.5[轻工技术与工程—发酵工程]