Farm crop straw anaerobic fermentation treatment method

Abstract

The invention relates to a method which adopts anaerobic fermentation technique to make resourceful disposal of the organic compounds such as crop straws and animal droppings. The collected crop straws are cut into small sections no more than 5 cm in length and then sent to a pretreatment system together with the animal droppings to make sizing agent by watering and mixing. The sizing agent is heated to 37positive and negative 2 degrees C, the pH value is adjusted to 6.5 to 7.5 and the solid-containing content of the sizing agent is adjusted to 9.6 to 10.4 percent by water. Then the sizing agent is sent to an anaerobic fermentation tank and then the fermented liquid goes through treatment of solid-liquid separation. The organic fertilizer can be obtained after manuring the solid materials obtained. The liquid separated from the fermented liquid, namely biogas slurry can be used in irrigation of the agriculture and gardening. The marsh gas produced can be used as energy sources after desulfurization treatment. The treatment process has the advantages of no poison, no peculiar smell and no pollution, and achieves the innocent treatment and resourceful disposal of the crop straws and can avoid the bacteria and virus from propagating. The treatment method of resourceful disposal of the organic compounds also has the advantages of good economy and good ecological cycle, so is a green environment-friendly treatment method of organic garbage.

Description

technical field [0001] The invention belongs to the technical field of anaerobic fermentation, and relates to a new method for resourceful treatment of organic matter such as crop stalks, poultry manure and the like—an anaerobic fermentation treatment method. Background technique [0002] A large amount of by-product crop straw is produced in agricultural production, which is mainly composed of three major organic components: cellulose, hemicellulose and lignin, and contains organic matter rich in biomass. However, due to various factors, the utilization rate is not high, and only a small part thereof is consumed as fuel, and the two major parts are directly discarded without treatment, which causes a serious waste of resources on the one hand, and on the other hand, the excess straw becomes a waste of waste. The phenomenon of environmental pollution is becoming more and more prominent, and open-air stacking poses a safety hazard, and fires caused by this occur from time to ...

AI Technical Summary

Problems solved by technology

However, due to various factors, the utilization rate is not high, and only a small part thereof is consumed as fuel, and the two major parts are directly discarded without treatment, which causes a serious waste of resources on the one hand, and on the other hand, the excess straw becomes an increasingly The phenomenon of environmental pollution is becoming more and more prominent, and open-air stacking poses a safety hazard, and fires caused by this occur from time to time

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