剩余污泥与酒精糟液高温共厌氧消化能量平衡及动力学研究  

Energy balance and kinetic assessment of anaerobic thermophilic co-digestion of waste activated sludge and alcohol distillery vinasse

作　　者：台明青[1] 陆浩洋 袁可佳 

机构地区：[1]南阳理工学院土木工程学院,河南南阳473000 [2]河南天冠企业集团有限公司,河南南阳473000

出　　处：《可再生能源》2015年第6期915-920,共6页Renewable Energy Resources

基　　金：国家自然科学基金资助项目(30571636);高等学校博士学科点专项科研基金资助项目(20060698002)

摘　　要：利用酒精糟液易降解及其具有的热能资源优势,在实验室条件下考察了剩余污泥与酒精糟液高温共厌氧消化运行情况。结果表明,当剩余污泥和酒精糟液以体积比3∶1混合、有机负荷率为1.73 g/(L·d)、污泥停留时间为12.5 d的条件下稳定运行时,污泥挥发性固体(VS)去除率为49.4%,日产气率为0.54 L/g,能量平衡值为39.73 k J/d,突破了剩余污泥厌氧消化能量平衡为负值的瓶颈,充分利用了酒精糟液的热能资源。采用ChenHashimoto一级动力学模型方程评价厌氧消化过程,剩余污泥高温厌氧消化和剩余污泥与酒精糟液混合高温共厌氧消化的动力学常数K和最大比生长速率μmax分别为0.640 0,0.084 9 d-1和1.914 1,0.261 9 d-1,表明剩余污泥与酒精糟液混合高温共厌氧消化体系明显优于剩余污泥高温厌氧消化体系。In order to utilize the degradation and resource of hot energy of alcohol distillery vinasse, the different operating characteristics were observed under the conditions of different sludge retention time, organic load, different mixture. The optimum operations on anaerobic thermophilic co-digestion of WAS and ADV were those： volumetric ratio of WAS to ADV（3∶1）,400 m L of total volume,12.5 d of sludge retention time,1.73 g VS/（L·d） of organic loading rate; results indicated that the biogas yield was0.54 L/（g VS·d）,net energy balance value was＋39.73 k J/d which breakthroughs the bottle neck barrier of negative value in anaerobic digestion of WAS,the positive net energy balance value in co-digestion was due to both improving biogas yield and utilizing fully heat energy resource of ADV. Based on the evaluation of anaerobic digestion process by Chen-Hashimoto first-order kinetic model, the model kinetic constant（K）and the maximum specific growth rate（？max） for anaerobic thermophilic digestion of WAS and co-digestion of WAS and ADV were 0.064,0.084 9 d^-1and 1.914 1,0.261 9 d^-1,respectively.Hence,the anaerobic thermophilic co-digestion of WAS and ADV was superier to anaerobic thermophilic digestion of WAS.

关 键 词：剩余污泥 酒精糟液 高温共厌氧 能量平衡 动力学 

分 类 号：TK6[动力工程及工程热物理—生物能] X705[环境科学与工程—环境工程]