Preparation method for producing efficient water flush fertilizer by biogas slurry

Abstract

The invention relates to a preparation method for producing an efficient water flush fertilizer by biogas slurry. An ozone deodorization technology and a biological aerobic fermentation technology areutilized, and peculiar smell factors and reducing substances in the biogas slurry are removed; meanwhile, through subsequent compounding and addition of macroelements, the problem of low nutrient content in the biogas slurry is solved. The prepared water flush fertilizer is small in dosage, high in fertilizer efficiency and capable of supplementing organic matters in soil; meanwhile, the biogas slurry contains many bacteriostatic factors and active substances, plant diseases can be effectively prevented and reduced, use of chemical fertilizers and pesticides is reduced, the crop yield is increased, the product quality is improved, the biogas slurry can be widely applied to agricultural planting, and resource recycling is achieved.

Description

technical field [0001] The invention relates to the field of biogas slurry treatment, in particular to a method for producing high-efficiency fertilization by using biogas slurry. Background technique [0002] With the continuous acceleration of urbanization, the treatment of urban Chinese kitchen residues has become a major environmental protection issue for governments at all levels. The general process is mechanical screening, crushing, sterilization, three-phase separation, raw water, Oxygen fermentation and biogas slurry are currently the mainstream direction of the kitchen environmental protection treatment industry, but the produced biogas slurry is facing a problem that needs to be treated: the produced biogas slurry has a strong odor, and the pungent smell is unacceptable to growers; at the same time, due to its The nutrient content is relatively low. If the biogas slurry is used to flush the crops, it is often necessary to irrigate the farmland in large quantities,...

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Problems solved by technology

[0002] With the continuous acceleration of urbanization, the treatment of urban Chinese kitchen residues has become a major environmental protection issue for governments at all levels. The general process is mechanical screening, crushing, sterilization, three-phase separation, raw water, Oxygen fermentation and biogas slurry are currently the mainstream direction of the kitchen environmental protection treatment industry, but the produced biogas slurry is facing a problem that needs to be treated: the produced biogas slurry has a strong odor, and the pungent smell is unacceptable to growers; at the same time, due to its The nutrient content is relatively low. If the biogas slurry is used to flush the crops, it is often necessary to irrigate the farmland in large quantities, which makes the transportation of the biogas slurry very inconvenient. The odor and nutrients of the biogas slurry are low, making it difficult to apply the biogas slurry on a large scale. Need a kind of production method that can utilize biogas slurry to produce high-efficiency flushing fertilization

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