2 Autothermal Thermophilic Organic Acid Fermentation Reactor and 2-Phase Anaerobic Digestion System Thereof

摘要

The present invention relates to a method for anaerobic digestion by fermenting by a self-heating method so as to stably operate an apparatus and to provide an excellent economical efficiency of an anaerobic digestion process and to provide an optimum acid fermentation environment and efficiently supply a low- A high-temperature acid fermentation tank for converting low-molecular-weight methane to organic acid by hydrolyzing an organic component into a dissolved state, And an anaerobic digestion tank for anaerobically digesting the organic matter that has undergone the acid fermentation process in the high temperature acid fermentation tank and stably methane fermenting the organic matter to produce biogas, wherein the high temperature acid fermentation tank contains sewage containing organic wastes A fermentation tank body for forming an enclosed treatment space for hydrolyzing and organic fermentation of an organic component of organic matter among high concentration organic wastes; and an internal gas generated in the upper part of the fermentation tank main body is circulated and supplied together with external fresh air A gas circulation unit provided at a lower portion of the main body of the fermentation tank and connected to be able to inject air together with the gas from the gas circulation unit, and gas and air are mixedly injected into the wastewater in the fermentation tank main body, An aquarium aerator which is fixedly installed on the upper portion of the fermenter main body A self-heating high-temperature acid fermenter comprising a foam breaker configured to stir a slurry layer of the organic waste contained in the water and to remove scum floating on the water surface due to gas agitation from the water aerator The present invention provides a two-phase anaerobic digestion system comprising a self-heating type high temperature acid fermentation tank.