Method for co-producing organic fertilizer with peat as raw material for preparing biogas and fulvic acid

A technology of organic fertilizer and fulvic acid, applied in the directions of organic chemistry, biological organic part treatment, waste fuel, etc., can solve the problems of low calorific value, waste of peat, not being comprehensively developed and utilized, etc., to achieve low cost and reduce production cost and energy consumption

Inactive Publication Date: 2015-09-02
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2010, my country produced 3.28 billion tons of coal, of which high-quality coal accounted for 68%. Coal types such as lignite and peat are often regarded as low-quality fuel power coal due to their high moisture content, high ash content, high volatile content, and low calorific value; and spontaneous combustion, it is not suitable for long-distance transportation, and it has become a coal resource that is difficult to process and utilize in different places, and has not been comprehensively developed and utilized
[0008] All of the above use a single component of peat, and the added value of the product is low, resulting in the waste of other effective components of peat, which is actually a waste of peat resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] After the peat is crushed to 50 mesh, add wheat bran to adjust the carbon-nitrogen ratio to 25:1, adjust the pH to 7.5, add the volume fraction to 60% activated sludge, add water to adjust the solid-liquid ratio to 10:1, and anaerobically at 35°C Ferment for 40 days to prepare biogas; filter biogas fermentation residue, dry at 105°C for 4 hours, crush and sieve, collect 40-mesh fine powder, add acetone solution with a mass fraction of 150% at room temperature, then add distilled water with a mass fraction of 300%, and finally add mass fraction Concentrated sulfuric acid with a fraction of 50%, stirred for 3 hours, and the solution was left to stand for 6 hours, filtered, and the filtrate was the product fulvic acid liquid; after standing during the extraction of fulvic acid, the filtered residue was adjusted to a pH of 6.5 with sodium hydroxide, and then added Cow dung with a residue mass fraction of 50% and a water content of 55% was stacked and fermented at room temper...

Embodiment 2

[0025] After the peat is crushed to 60 mesh, add wheat bran to adjust the carbon-nitrogen ratio to 25:1, adjust the pH to 7.0, add the volume fraction to 50% activated sludge, add water to adjust the solid-liquid ratio to 11:1, anaerobic at 55°C Ferment for 25 days to prepare biogas; filter biogas fermentation residue, dry at 65°C for 4 hours, crush and sieve, collect 60-mesh fine powder, add 200% acetone solution at room temperature, then add 200% distilled water, and finally add mass fraction Concentrated sulfuric acid with a fraction of 80%, stirred for 2 hours, then allowed the solution to stand for 5 hours, filtered, and the filtrate was the product fulvic acid liquid; after standing in the process of fulvic acid extraction, the filtered residue was adjusted to pH 7.0 with sodium hydroxide, and then added Cow dung with a residue mass fraction of 40% and a water content of 65% was stacked and fermented at room temperature for 30 days, and dried at 55°C after granulation to ...

Embodiment 3

[0027] After the peat is crushed to 40 mesh, add wheat bran to adjust the carbon-nitrogen ratio to 30:1, adjust the pH to 7.0, add the volume fraction to 55% activated sludge, add water to adjust the solid-liquid ratio to 11:1, anaerobic at 50°C Ferment for 20 days to prepare biogas; filter biogas fermentation residue, dry at 95°C for 2 hours, crush and sieve, collect 40-mesh fine powder, add acetone solution with a mass fraction of 120% at room temperature, then add distilled water with a mass fraction of 180%, and finally add a mass fraction 60% concentrated sulfuric acid, after stirring for 3 hours, the solution was left to stand for 4 hours, filtered, and the filtrate was the product fulvic acid liquid; after standing during the extraction of fulvic acid, the filtered residue was adjusted to pH 7.0 with sodium hydroxide, and then added equivalent Cow manure with a residue mass fraction of 45% and a water content of 65% was stacked and fermented at room temperature for 28 da...

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PUM

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Abstract

The invention discloses a co-generation method for preparing methane, fulvic acid and an organic fertilizer by taking peat as a raw material. The method comprises the following basic steps: preparing methane from peat though anerobic fermentation, extracting fulvic acid from methane fermentation residues, and further compounding, decomposing and fermenting the residues after the fulvic acid is extracted to produce the organic fertilizer rich in humic acid. The method realizes poly-generation of preparing methane, fulvic acid and the organic fertilizer from peat, solves the key problems that at present only single component of peat is utilized and the product added value of peat mainly serving as an organic fertilizer and horticultural substrate is low, and realizes high-value comprehensive utilization of peat resources.

Description

technical field [0001] The invention relates to a method for preparing biogas and fulvic acid to co-produce organic fertilizer with peat as raw material, which belongs to the field of comprehensive utilization of peat resources. Background technique [0002] Although my country's coal resources are relatively rich, high-quality coal resources only account for about half, and the rest are coal resources such as lignite and peat. In 2010, my country produced 3.28 billion tons of coal, of which high-quality coal accounted for 68%. Coal types such as lignite and peat are often regarded as low-quality fuel power coal due to their high moisture content, high ash content, high volatile content, and low calorific value; and spontaneous combustion, it is not suitable for long-distance transportation, and it has become a coal resource that is difficult to process and utilize in different places, and has not been comprehensively developed and utilized. Under the current situation of gl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P5/02C08H99/00C07G99/00C05F15/00
CPCY02E50/343Y02W30/47Y02E50/30Y02W30/40
Inventor 马力通李珺罗宁安胜利赫文秀
Owner INNER MONGOLIA UNIV OF SCI & TECH
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