Design of Automatic Control System for Dry Anaerobic Fermentation of Kitchen Waste

Abstract

In this paper, the expert system of artificial intelligence automatic control system is designed to identify each stage of the internal fermentation reaction process of food waste anaerobic fermentation tank, and complete the real-time monitoring and whole process control. By automatically adjusting the temperature, pH, pressure and other environmental factors in the tank, the heat-resistant anaerobic fermentation bacteria in the fermenter are in a suitable growth environment, and the efficiency and quality of methane production by anaerobic fermentation bacteria are improved. The intelligent system can complete all the work such as feeding, adjusting environmental parameters in the tank, stirring, collecting and monitoring methane production, and removing primary reactants. It can automatically identify various parameters in the tank from the whole process of feeding to discharging. Display and save the data, report the abnormal situation in time and take the corresponding processing procedures. The direct control of anaerobic fermentation tank adopts STM32 single chip microcomputer and DSP as the lower machine, laptop computer as the upper machine, equipped with expert system.Nano-Fe3O4 iron powder was innovatively used to complete the work of temperature regulation module and agitation module, and the fermentation efficiency of anaerobic bacteria was improved.