The invention provides a method for preparing an
organic fertilizer by combining
red mud anaerobic
fermentation, which comprises the following steps: 1, pulverizing
red mud to prepare small
solid particles; 2, uniformly mixing the small
red mud solid particles serving as an additive with
livestock and poultry excrement, adding an obtained mixture into an anaerobic
fermentation reactor, inoculatinganaerobic
fermentation microorganisms, and performing anaerobic fermentation culture; 3, after gas production is finished, taking out the red mud and
livestock and
poultry manure mixture from the anaerobic fermentation reactor, and carrying out
dehydration treatment to reduce the
water content of the red mud and
livestock and
poultry manure mixture; and 4, naturally air-
drying the dehydrated redmud and livestock and
poultry manure mixture, and carrying out crushing treatment to obtain the red mud and livestock and poultry
manure mixed
organic fertilizer. After the technical scheme is adopted, the
organic fertilizer has the beneficial effects that the livestock and poultry
manure is used as a substrate, and the red mud anaerobic fermentation is combined to prepare the mixed organic
fertilizer, so that the functionality of the livestock and poultry
manure as the organic
fertilizer is improved, and the red mud is effectively utilized.