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Method for rapidly converting pig manure into organic fertilizer

A technology of organic fertilizer and pig manure, which is applied in the field of agriculture, can solve the problems of residual harmful substances, long cycle, strong odor, etc., and achieve the effect of reducing water, simple operation, and eliminating feces odor

Inactive Publication Date: 2021-05-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the existing biological fermentation method for organically fertilizing pig manure, there are problems such as long cycle, large area occupation, strong odor, slow fertilizer effect and residual harmful substances

Method used

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  • Method for rapidly converting pig manure into organic fertilizer
  • Method for rapidly converting pig manure into organic fertilizer
  • Method for rapidly converting pig manure into organic fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of method that pig manure is converted into organic fertilizer fast, comprises the steps:

[0025] (1) Add 10g red mud (100 mesh) to 50mL FeSO 4 (3g / L) solution, then pass N into the mixed solution 2 (0.1MPa), stirred at room temperature (100rpm) for 3 hours, centrifuged (4000rpm) for 5min, dried in a vacuum oven at 50°C, and crushed to 100 mesh to obtain solid powder A;

[0026] (2) uniformly mix solid powder A with zero-valent nano-iron powder (100 mesh) according to a mass ratio of 3:1 to obtain nano-carrier B;

[0027] (3) Add nanocarrier B (1g) in fresh pig manure (10g), after fully stirring at room temperature, at 100mJ / cm 2 Under the irradiation of ultraviolet light, the O 3 (1mg / L) 30min, and constantly stir (100rpm), obtain the highly active slow-release organic fertilizer C that is rich in humic acid and fulvic acid;

[0028] (4) the organic fertilizer C (5g) that step (3) obtains is mixed with aluminum ash (1g) at room temperature, obtains the high...

Embodiment 2

[0031] A kind of method that pig manure is converted into organic manure fast, comprises the steps:

[0032] (1) Add 15g red mud (150 mesh) to 60mL FeSO 4 (4g / L) solution, then pass N into the mixed solution 2 (0.2MPa), stirred at room temperature (300rpm) for 4 hours, centrifuged (4500rpm) for 7min, dried in a vacuum oven at 80°C, and crushed to 150 mesh to obtain solid powder A;

[0033] (2) Uniformly mixing solid powder A with zero-valent nano-iron powder (150 mesh) according to a mass ratio of 4:1 to obtain nanocarrier B;

[0034] (3) Add nanocarrier B (2g) in fresh pig manure (15g), after fully stirring at room temperature, at 200mJ / cm 2 Under the irradiation of ultraviolet light, the O 3 (2mg / L) 50min, and constantly stir (300rpm), obtain the highly active slow-release organic fertilizer C that is rich in humic acid and fulvic acid;

[0035] (4) the organic fertilizer C (7g) that step (3) obtains is mixed with aluminum ash (1.5g) at room temperature, obtains rich in ...

Embodiment 3

[0042] A kind of method that pig manure is converted into organic manure fast, comprises the steps:

[0043] (1) Add 20g red mud (200 mesh) to 70mL FeSO 4 (5g / L) solution, then pass N into the mixed solution 2 (0.3MPa), stirred at room temperature (400rpm) for 5 hours, centrifuged (5000rpm) for 10min, dried in a vacuum oven at 100°C, and crushed to 200 mesh to obtain solid powder A;

[0044] (2) Uniformly mix solid powder A with zero-valent nano-iron powder (200 mesh) according to a mass ratio of 5:1 to obtain nanocarrier B;

[0045] (3) Add nanocarrier B (3g) in fresh pig manure (20g), after fully stirring at room temperature, at 300mJ / cm 2Under the irradiation of ultraviolet light, the O 3 (3mg / L) 60min, and constantly stir (400rpm), obtain the highly active slow organic fertilizer C that is rich in humic acid and fulvic acid;

[0046] (4) the organic fertilizer C (10g) that step (3) obtains is mixed with aluminum ashes (2g) at room temperature, obtains the high content ...

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Abstract

The invention discloses a method for quickly converting pig manure into an organic fertilizer, and the method comprises the following steps: quickly treating fresh pig manure by using an advanced oxidation technology, and preparing a slow-release organic fertilizer rich in humic acid and fulvic acid by using red mud as a carrier; and adding aluminum ash to obtain the high-activity slow-release organic fertilizer rich in humic acid, fulvic acid, N and K. The method not only can realize harmlessness and recycling of pig manure, but also can solve the problem of large-scale stacking of red mud and aluminum ash, promotes the coordinated sustainable development of breeding industry, agriculture and industry, and has a good application prospect.

Description

technical field [0001] The invention relates to a method for quickly converting pig manure into organic fertilizer, which belongs to the technical field of agriculture. Background technique [0002] Now pig raising has become the mainstream project in our country, but with the expansion of the breeding area, the pollution to the environment is becoming more and more serious. Improper handling of pig manure can lead to eutrophication of water bodies, damage to groundwater, and air pollution. Pig manure is rich in organic matter and is a good raw material for organic fertilizers. At present, the main method of organic fertilization of pig manure is biological fermentation. However, this method has problems such as long cycle, large area, odor, slow fertilizer efficiency, and residual harmful substances. It is urgent to develop a fast, efficient and green organic pig manure. Fertilization technology. [0003] Red mud is the waste residue produced in the production of alumina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G3/80
CPCC05G3/40C05G3/80C05D9/02C05F3/00
Inventor 王冬芳蔡冬清李磊许贺李响张艾宋燕西刘亚男李瑾泽张小江吴庆川
Owner DONGHUA UNIV
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