Anaerobic digestion biogas production process

This detailed diagram depicts an anaerobic digestion system enclosed in a sealed steel bioreactor tank designed to process organic waste into biogas and fertilizers. Organic waste is fed through a hopper, pre-treated, and pumped into the insulated digester where microbes break down the waste through four phases: hydrolysis, acidogenesis, acetogenesis, and methanogenesis. The process produces biogas (methane, carbon dioxide, hydrogen sulfide) which is cleaned, stored, and used to generate electricity and heat via a combined heat and power engine. The remaining digestate exits the tank and is separated into liquid and solid fertilizers for agricultural use. Temperature control is maintained with heating coils to optimize microbial activity.