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Preparation method of cow manure organic fertilizer

The technology of organic fertilizer and cow dung is applied in the field of preparation of cow dung organic fertilizer, which can solve the problems of cow dung pollution, large amount of cow dung, serious environmental pollution, etc., and achieves high fermentation degree, easy digestion and utilization, and wide source of raw materials. Effect

Inactive Publication Date: 2017-11-24
当涂县海纳农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the existing problems: cow dung pollution, large amount of cow dung produced, serious environmental pollution, becoming the number one problem restricting cattle breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of cow dung organic fertilizer, comprising the following steps:

[0021] (1) Cow dung pretreatment: pass the cow dung through a press to remove the moisture, and dry it until the moisture content is kept at 30%-40%;

[0022] (2) Pulverization treatment: the rice husk and cow dung after drying are respectively pulverized by a pulverizer;

[0023] (3) Mixing: Mix the pulverized rice husk and cow dung evenly according to the mass ratio of 2-3:4-5 to obtain the mixture;

[0024] (4) Ammonification treatment: Fill the mixture into the ammoniation tank, add ammonia water in an amount of 9% of the total mass of the mixture in the ammoniation tank, close the ammoniation tank, and perform ammoniation treatment: The temperature is 42°C, and the ammoniation time is 8 days;

[0025] (5) Fermentation tank fermentation: Add the ammonified mixed material to 4% of the total mass of the mixed material with a starter, mix evenly, fill it into the fermentation tank,...

Embodiment 2

[0034] Present embodiment 2 is compared with embodiment 1, and step changes in the following aspects:

[0035] Step (4) ammoniation treatment, wherein the amount of ammonia added is 10% of the total mass of the mixture, the temperature of the ammoniation pool is 47°C, and the ammoniation time is 9 days.

[0036] Step (5) Fermentation in the fermenter, the process parameters are:

[0037] Fermentation bacteria culture, first under the condition of unclosed fermentation tank, temperature 26 ℃, time 6h; anaerobic fermentation, closed fermentation tank, fermentation tank temperature 30 ℃, time 6 days; sterilized fermentation, open the fermentation tank cover, the temperature in the tank is 25 ℃, ferment for 14h.

[0038] Step (6) Deodorization fermentation, its process parameters are:

[0039] The thickness of each layer of mixture is 6cm, the air intake at the bottom is 3L / min, the temperature is 69%, the humidity is 60%-64%, and the fermentation time is 3 days.

[0040] Compa...

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Abstract

The invention discloses a preparation method of cow manure organic fertilizer. The preparation method is characterized by comprising steps as follows: (1) cow manure pretreatment: cow manure is squeezed and aired until the moisture content ranges from 30% to 40%; (2) pulverization treatment: a pulverizer performs pulverization treatment; (3) mixing: pulverized rice husk and cow manure are mixed uniformly; (4) ammoniation treatment: 9%-11% of ammonium hydroxide is added for ammoniation treatment; (5) fermentation in a fermentation pool: a leavening agent accounting for 3%-6% of the total mass of the mixture is added, and fermentation is performed in the fermentation pool; (6) deodorized fermentation: a fertilizer leavening agent accounting for 2%-3% of the total mass of the mixture is added for layered fermentation; (7) drying and granulation: the granular cow manure organic fertilizer with the moisture ranging from 15% to18% is prepared. The obtained cow manure fertilizer contains rich nutrition, ingredients are decomposed sufficiently, operation is simple, practicability is realized, and the utilization rate of the cow manure and rice husk is increased.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizer processing, and in particular relates to a method for preparing cow dung organic fertilizer. Background technique [0002] Cattle or dairy cows can produce about 6-7 tons of cow dung every year. A medium-scale cattle farm can produce tens of thousands of tons of cow dung every year. Cow dung is a serious environmental pollution. Departmental headaches. Cow dung is a metabolite of cattle. Dried cow dung contains 10%-20% crude protein, 1%-3% crude fat, 20%-30% nitrogen-free extract, 15%-30% crude fiber, rich in nutrients ; Therefore, cow dung can be used in feed processing, organic fertilizer production, biogas fermentation, etc. However, cow dung is currently used as a raw material for feed processing, and the current utilization rate is low, and it is difficult to digest cow dung on a large scale; biogas fermentation, cow dung is used for biogas fermentation, and it cannot be used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00
CPCC05C3/00C05F17/00C05G5/12C05F3/00C05F5/002C05F11/08Y02W30/40
Inventor 胡晨
Owner 当涂县海纳农业科技有限公司
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