厌氧发酵池搅拌强度控制及有效性预测研究  

Study on Effectiveness Prediction and Intensity Control of Mixing in Anaerobic Digestion Tanks

作　　者：王耀华[1,2] 朱洪光[1,2] 

机构地区：[1]同济大学新农村发展研究院生物质能源研究中心,上海201804 [2]同济大学国家设施农业工程技术研究中心

出　　处：《现代农业科技》2014年第23期226-230,233,共6页Modern Agricultural Science and Technology

基　　金：上海市科技兴农项目"生态型养殖场配套装备技术集成与示范"(沪农科推字〔211〕第3-2号)

摘　　要：总结了厌氧发酵过程中搅拌作用的发挥,从而论证了搅拌的必要性。阐述了过度搅拌对发酵的抑制,进而提出了临界起始强度和临界时间强度概念,结合对搅拌强度的定量化分析手段,对搅拌强度进行控制。提出可以利用一些搅拌设备性能的评价性指标对搅拌效果进行预测,而后利用LDA、ERT、CFD技术手段描述实际的流场情况,对搅拌效果进行检验,从而提供了由控制到预测,再从预测到检验的搅拌方案制定的方法学基础。This paper summarized the role of mixing in the process of anaerobic fermentation, and the necessity of mixing was thus demonstrated. Inhibition of excessive mixing intensity to fermentation was also listed. Then the concepts of critical initial mixing strength and critical time mixing strength were put forward,using this concept and quantitative analysis method of stirring intensity to control the mixing intensity. In addition, the author considered that it was possible tc, use some evaluation indicators for mixing equipment performance to predict mixing effect. Then,the flow field of actual situation with the method of LDA,ERT and CFD technology were described,and the mixing effect was tested. It provided the foundation of methodology for mixing scheme with mixing control, mixing prediction and mixing test.

关 键 词：厌氧发酵 搅拌 临界起始强度 临界时间强度 有效性预测 

分 类 号：X503.221[环境科学与工程—环境工程]