A method and system for applying biogas slurry to large-scale drip irrigation

Abstract

The invention provides a system for applying biogas slurry to large-scale drop irrigation. The system comprises biogas slurry pretreatment equipment, a biogas slurry storage tank, a card swiping charging device, a centrifugal filter, a mass flowmeter, a water source, a differential pressure fertilization tank, a screen filter and a water outlet. The biogas slurry storage tank is connected with the biogas slurry pretreatment equipment through a pipeline. The card swiping charging device is connected with the biogas slurry storage tank. The centrifugal filter is connected with the biogas slurry storage tank through a pipeline. The mass flowmeter is arranged on the pipeline between the biogas slurry storage tank and the centrifugal filter and connected with the card swiping charging device. The water source is connected with the centrifugal filter through a pipeline. The differential pressure fertilization tank is connected with the centrifugal filter through a pipeline. The screen filter is connected with the differential pressure fertilization tank through a pipeline. The water outlet is connected with the screen filter through a pipeline. The system has the advantages that an organic whole of fertilizer and biogas slurry organic fertilizer is formed, a large amount of biogas slurry can be decomposed, perfect combination of the biogas slurry and fertilizer can be achieved, and therefore crop production efficiency is greatly improved, the soil environment is greatly improved, meanwhile, biogas slurry fertilizer is charged according to needs, payment is achieved automatically, and the use convenience and practicality of the biogas slurry fertilizer are improved.

Description

technical field [0001] The invention relates to the technical field of biogas slurry equipment, in particular to a method and system for applying biogas slurry to large-scale drip irrigation. Background technique [0002] Biogas slurry is the residue produced by anaerobic fermentation of organic waste such as human and animal manure and crop straw in a biogas digester. It is a high-quality organic fertilizer. The biogas slurry contains various elements such as nitrogen, phosphorus, potassium, magnesium and calcium. The active organic components include plant hormones such as humic acid, indole acetic acid, lactic acid bacteria, gibberellin and cytokinin, and B vitamins. Organic molecules such as amino acids, proteins, hydrolases, and various inorganic acids and certain antibiotics. The coordination between these components exists in the biogas slurry in the form of quick-acting nutrients and biopesticides, which can be directly and quickly absorbed and killed harmful bacter...

AI Technical Summary

Problems solved by technology

[0005] 1. The main problem of direct application of biogas slurry in drip irrigation will cause the clogging of the drip irrigation tank, or the clogging of the filter, or even cause the system to fail to operate normally.

[0006] 2. The biogas slurry treatment technology currently used in drip irrigation mainly includes complete solid-liquid separation (plate and frame filter press) and static filtration to obtain the supernatant. Although the separated biogas slurry can be directly applied to the irrigation system, the nutrient content should be reduced Many, high processing costs, not suitable for large-scale promotion; long period of static filtration, loss of nutrient content, need for a large site, high labor intensity of drip irrigation and fertilization, etc.

[0007] 3. The main way of biogas slurry treatment is flood irrigation. This technology has a very large consumption capacity, but there are problems such as high transportation cost and high labor intensity. At the same time, from the perspective of water saving, flood irrigation with large water is not advocated. Its acreage is decreasing

[0008] Therefore, the main contradiction of biogas slurry is the contradiction between huge biogas slurry production and backward biogas slurry application methods and imperfect supporting equipment.

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