Method for preparing marsh gas from deer manure through efficient anaerobic fermentation

The invention relates to a method for preparing marsh gas from deer manure through efficient anaerobic fermentation. The method is characterized in that the marsh gas is prepared through mixed anaerobic fermentation by using the deer manure as a major fermentation raw material, using mushroom fungus slag, organic wastewater, zeolite and magnetic powder as auxiliary materials, and using lime water as a PH value regulator. The method comprises the following concrete processes of 1, firstly preparing magnetic powder particles, zeolite particles and mushroom mushroom slag; 2, mixing the mushroom fungus slag and the deer manure to prepare a deer manure and mushroom fungus slag mixed material, wherein the mass ratio of the deer manure to the mushroom fungus slag is 16:5-8:5; 3, regulating the water content of the deer manure and mushroom fungus slag mixed material by the organic wastewater; 4, distributing the magnetic powder and the zeolite, wherein the addition quantity of the magnetic powder is 2 percent to 8 pe