Goethe-University, Goethe-Center for Scientific Computing, Kettenhofweg 139, 60325 Frankfurt a.M., Germany.
Bioresour Technol. 2013 Mar;132:414-8. doi: 10.1016/j.biortech.2012.12.031. Epub 2012 Dec 14.
In this article a mathematical model is introduced, which estimates the distribution of the four anaerobic digestion phases (hydrolysis, acidogenesis, acetogenesis and methanogenesis) that occur among the leach bed reactor and the anaerobic filter of a biogas plant. It is shown that only the hydrolysis takes place in the first stage (leach bed reactor), while all other anaerobic digestion phases take place in both reactor stages. It turns out that, besides the usually measured raw materials of the acetogenesis and the methanogenesis phases (organic acids), it is also necessary to analyze the process liquid for raw materials of the acidogenesis phase, i.e., sugars, fatty acids, amino acids, etc. The introduced model can be used to monitor the inhibition of the anaerobic digestion phases in reactor stages and can, thus, help to improve the control system of biogas plants.
本文引入了一个数学模型，用于估计沼气厂渗滤床反应器和厌氧滤池内发生的四个厌氧消化阶段（水解、酸化、产乙酸和产甲烷）的分布。结果表明，只有水解发生在第一阶段（渗滤床反应器），而所有其他厌氧消化阶段都发生在两个反应器阶段中。事实证明，除了通常测量的产乙酸和产甲烷阶段的原料（有机酸）外，还需要分析酸化阶段的原料，即糖、脂肪酸、氨基酸等。所引入的模型可用于监测反应器阶段中厌氧消化阶段的抑制情况，从而有助于改善沼气厂的控制系统。
