The task of modeling the processes of anaerobic microbiological fermentation with keeping the balance at the acetogenesis stage was considered in this work. It was proposed and justified to build models at these stages in the form of interval discrete dynamic model. The structure identification method of IDDM on the principles of honey bee colony functioning in the food search process, which provides the possibility of obtaining simple IDDDM structures with specified prognostic properties relative to existing methods, was substantiated.