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Method for producing biogas co-production organic fertilizer through peat gasket material

A gasket material and biogas production technology are applied in the preparation of organic fertilizers, organic fertilizers, and the treatment of bio-organic parts. It can solve the problems of low cost, single utilization mode, and single economic value of products, so as to improve quality, environment, and Realize the effect of environmental protection and economic benefits

Inactive Publication Date: 2014-04-30
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in the present invention is to overcome the defects of the prior art, and provide a method for producing biogas and organic fertilizer with peat gasket material, which uses the material characteristics of peat gasket material to mix peat and livestock manure, and anaerobic fermentation Produce biogas and prepare organic fertilizer from biogas residue, which solves the problem that peat is only used as a gasket material in a single way and the peat gasket material is directly composted, which cannot effectively kill pathogenic bacteria and the economic value of a single product is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 200g of peat gasket material and add livestock urine to adjust the carbon-nitrogen ratio to 25:1, adjust the pH to 7.5, add anaerobic activated sludge accounting for 60% of the total mass of the material, add water to adjust the solid-liquid ratio to 1:10 g / ml, Biogas was prepared by anaerobic fermentation at 28°C for 27 days. During the fermentation process, the fermentation device was stirred and oscillated 4 times a day, and 22,853ml of biogas was collected by drainage and gas collection. The average methane content in the biogas was 56% as determined by gas chromatography.

[0024] Peat gasket material anaerobic fermentation residue, add cow dung and urine equivalent to 40% of the total residue mass fraction and 50% water content, adjust the water content to 55%, stack and ferment at 50°C for 10 days, dry after granulation to obtain organic fertilizer.

[0025] The organic fertilizer contains humic acid 26%, organic matter (dry basis) 45%, total nutrient (dry b...

Embodiment 2

[0027] Take 300g of peat gasket material and add livestock urine to adjust the carbon-nitrogen ratio to 28:1, adjust the pH to 7.0, add anaerobic activated sludge accounting for 50% of the total mass of the material, add water to adjust the solid-liquid ratio to 1:20g / ml, at 30 Biogas was prepared by anaerobic fermentation at ℃ for 30 days. During the fermentation process, the fermentation device was stirred and oscillated 4 times a day, and 28974ml of biogas was collected by the drainage and gas collection method. The average methane content in the biogas was 58% as determined by gas chromatography.

[0028] The anaerobic fermentation residue of the peat gasket material is added with sheep manure equivalent to 50% of the residue mass fraction and 55% of the water content, adjusted to 50% of the water content, stacked and fermented at 50°C for 20 days, granulated and dried to obtain organic fertilizer.

[0029] The organic fertilizer contains humic acid 28%, organic matter (dry...

Embodiment 3

[0031] Take 100g of peat gasket material and add livestock urine to adjust the carbon-nitrogen ratio to 25:1, adjust the pH to 6.5, add anaerobic activated sludge accounting for 40% of the total mass of the material, add water to adjust the solid-liquid ratio to 1:1g / ml, at 50 Biogas was prepared by anaerobic fermentation at ℃ for 7 days. During the fermentation process, the fermentation device was stirred and oscillated 4 times a day, and 14532ml of biogas was collected by the drainage and gas collection method. The average methane content in the biogas was 60% as determined by gas chromatography.

[0032] For the anaerobic fermentation residue of peat gasket material, add pig manure equivalent to 30% of the residue mass fraction and 50% of the water content to adjust the water content to 70%, stack and ferment at 60°C for 30 days, granulate and dry to obtain organic fertilizer.

[0033] The organic fertilizer contains humic acid 26%, organic matter (dry basis) 42%, total nutr...

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Abstract

The invention discloses a method for producing a biogas co-production organic fertilizer through a peat gasket material. Livestock urine is added into the peat gasket material to regulate a carbon nitrogen ratio to be (25-30):1; the pH value is regulated to be 6.5-7.5, anaerobic activated sludge which accounts for 30-60 percent of the total mass of the material is added, a solid-to-liquid ratio is regulated to be 1:(1-20) g / ml, and the biogas is prepared through anaerobic fermentation within 7-40 days at the temperature of 28-50 DEG C. The production method comprises the following steps: performing anaerobic fermentation on residues through the peat gasket material, adding auxiliary materials to regulate the moisture content to be 50-70 percent, performing compost fermentation at the temperature of 50-60 DEG C for 10-40 days, granulating and drying to obtain the organic fertilizer. The problems that the peat only serves as a gasket material and is single in utilization mode, the peat gasket material is used for directly composting, pathogenic bacteria cannot be effectively killed, and the product is single and low in economic value are solved, the purposes of the peat are finally enlarged, the additional value of the peat is increased, and the economic benefits of peat mining and utilization are improved.

Description

[0001] technical field [0002] The invention relates to a method for producing biogas and co-producing organic fertilizer from a peat washer material, belonging to the application field of coal resource utilization. Background technique [0003] Coal is the most widely distributed and abundant energy resource in my country, and it plays a major role in my country's energy consumption structure. Coal can be divided into peat, lignite, bituminous coal and anthracite according to the degree of coalification. Peat, also known as peat or peat, is the coal with the lowest degree of coalification. It is formed by long-term accumulation of swamp plant residues under the conditions of excessive water, poor ventilation, and low temperature. A kind of organic matter that is not easy to decompose and has stable properties and accumulates in layers. [0004] Gasket refers to the bedding of dry soil, broken grass, peat, etc. on the circle of livestock. Peat has better water holding an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04C05F17/00C05F15/00
CPCY02E50/30Y02W30/40
Inventor 李珺马力通
Owner INNER MONGOLIA UNIV OF SCI & TECH
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