Method for preparing organic fertilizer by utilizing animal excrement as well as organic fertilizer

Abstract

The invention relates to a method for preparing organic fertilizer by utilizing animal excrement as well as the organic fertilizer. The method comprises the following steps: performing solid and liquid separation treatment on the animal excrement to obtain solid excrement with the water content being 45 to 50 percent by weight; adding a disinfectant into the solid excrement and stirring for 10 to15 minutes; adding straw powder and decomposed coal to enable the organic matter content of the solid excrement to be more than 45 percent by weight; adding a ripening agent and stirring for 10 to 12minutes to obtain an organic fertilizer substrate containing humic acid; mixing the organic fertilizer substrate and a soil improvement agent according to the mass ratio of 100:(15-20) and stirring for 10 to 15 minutes to obtain an improved organic fertilizer substrate; and performing pelleting and drying treatment on the improved organic fertilizer substrate to obtain an organic fertilizer finished product. The active demand on resource utilization of excrement pollutants and crop straws in breeding industry by China can be met; meanwhile, commercial organic fertilizer meeting the national standard NY525-2012 can be produced; the pain spot of environmental protection is solved; chemical fertilizer is replaced by the organic fertilizer, so that the problem of secondary pollution of soil iseffectively avoided and the time-honored planting and cultivation combined closed ring ecological system is completed completely.

Description

technical field [0001] The invention relates to a method for preparing organic fertilizer by using poultry manure and the organic fertilizer, belonging to the field of fertilizer production. Background technique [0002] According to statistics, the aquaculture industry in the country sells 50.5 million cattle, nearly 300 million sheep, 688.61 million pigs, 7.9 billion chickens, and more than 3 billion ducks every year. The excrement produced by poultry and livestock reaches 3.8 billion tons every year. If these feces cannot be treated harmlessly, they will cause great damage to the environment. [0003] First, air pollution. [0004] Farms produce more than 100 harmful gases. However, about 70% of the nitrogen-containing substances in the feed are not fully utilized and excreted, producing odorous gases such as ammonia and hydrogen sulfide, reducing the oxygen content in the air, and forming acid rain in severe cases, reducing the immunity of animals and people , respira...

AI Technical Summary

Problems solved by technology

[0022] Crops need 9 kinds of macronutrients and 7 kinds of micronutrients. Long-term use of chemical fertilizers can easily cause an imbalance in the ratio of nutrient elements, making fertilizer useless

[0023] Sixth, soil pollution

[0024] Due to the "three wastes" pollution outside the agricultural system, the excessive use of chemical fertilizers, pesticides, and residual pollution from agricultural film, as well as untreated organic fertilizer pollution, exceeded the self-purification capacity of the soil and "overflowed", destroying the ecological balance of the soil and causing a large number of beneficial organisms Death, reduction of soil biological population, decline of soil activity, deterioration of soil function, and eventually the soil loses its productive capacity and uses value

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