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Functional compound accelerant for methane fermentation and preparation method thereof

A composite accelerator, biogas fermentation technology, applied in fermentation, biological sludge treatment, waste fuel, etc., can solve the problems of short duration of gas production peak, low utilization rate of fermentation substrate, and inability to operate normally, and achieve improvement. Efficiency, shortened fermentation start-up time, easy operation effect

Active Publication Date: 2017-08-08
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, 1) biogas fermentation basically cannot operate normally in winter, because the activity of microorganisms is limited by cold weather, resulting in stagnant gas production
2) The fermentation cycle is longer, and the peak duration of gas production is shorter
3) The utilization rate of fermentation substrate is low, and the incompletely digested biogas residue and biogas slurry are likely to cause secondary pollution to the environment

Method used

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  • Functional compound accelerant for methane fermentation and preparation method thereof
  • Functional compound accelerant for methane fermentation and preparation method thereof
  • Functional compound accelerant for methane fermentation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Preparation of vermiculite microcrystallized powder:

[0058] Grinding and grinding 3.75 parts of vermiculite, adding 0.35 parts of ethylene glycol, and preparing it through ultra-fine processing so that the average particle size reaches 400 mesh or more to obtain microcrystalline powder, which is packed for later use;

[0059] 2) Preparation of functional accelerator:

[0060] The mass parts are 3 parts of aloe carbon material, 1.5 parts of hydrolytic bacteria, 1 part of trace element Fe, 1.6 parts of organic additives (0.4 part of urea, 0.6 part of phosphate fertilizer, 0.6 part of citric acid) and 5 parts of enzyme accelerator (protease 1.5 parts, 1 part of cellulase, 0.5 part of lipase, 1 part of amylase, 1 part of nuclease) and step 1) microcrystalline powder are mixed uniformly at room temperature to obtain a functional compound accelerator for biogas fermentation.

[0061] 3) Using functional accelerators for biogas fermentation:

[0062] With 60 parts of co...

Embodiment 2

[0064] 1) Preparation of vermiculite microcrystallized powder:

[0065] Grinding and grinding 4.2 parts of vermiculite, adding 0.3 parts of ethylene glycol, and preparing through ultra-fine processing to obtain a microcrystalline powder with an average particle size of 400 mesh or more, which is packed for later use;

[0066] 2) Preparation of functional accelerator:

[0067] The mass parts are 2.8 parts of aloe carbon material, 1.2 parts of hydrogen-producing bacteria, 1.2 parts of trace element Co, 1.6 parts of organic additives (0.8 part of urea, 0.3 part of phosphate fertilizer, 0.5 part of citric acid) and 5 parts of enzyme accelerator ( 0.5 part of protease, 2 parts of cellulase, 1 part of lipase, 1 part of amylase, 0.5 part of nuclease) and step 1) microcrystalline powder are mixed uniformly at room temperature to obtain a functional compound accelerator for biogas fermentation.

[0068] 3) Using functional accelerators for biogas fermentation:

[0069] With 60 parts ...

Embodiment 3

[0071] 1) Preparation of vermiculite microcrystallized powder:

[0072] Crush and grind 5 parts of vermiculite, add 0.4 parts of propylene diamine phosphate, and prepare through ultra-fine processing so that the average particle size reaches 400 mesh or more to obtain microcrystalline powder, which is packed for later use;

[0073] 2) Preparation of functional accelerator:

[0074] The mass parts are 3 parts of aloe charcoal material, 2 parts of acetogenic bacteria, 0.3 part of trace element Ni, 1.6 parts of organic additives (0.4 part of urea, 0.6 part of phosphate fertilizer, 0.6 part of citric acid) and 6 parts of enzyme accelerator ( 1.5 parts of protease, 2 parts of cellulase, 0.5 part of lipase, 1 part of amylase, 1 part of nuclease) and step 1) microcrystalline powder are mixed uniformly at room temperature to obtain a functional compound accelerator for biogas fermentation.

[0075] 3) Using functional accelerators for biogas fermentation:

[0076] With 80 parts of c...

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Abstract

The invention discloses a functional compound accelerant for methane fermentation and a preparation method thereof. The preparation method comprises the following steps: preparing vermiculite microcrystalline powder; uniformly mixing 2.8 to 4 parts of aloe carbon material, 1.2 to 2 parts of compound microorganism bacterium agent, 0.3 to 1.2 parts of trace elements, 1.2 to 2 parts of organic additive and 4 to 6 parts of enzyme accelerant according to mass parts with the microcrystalline powder at the normal temperature to obtain the functional compound accelerant for methane fermentation. When the functional compound accelerant for methane fermentation is applied to fermentation, livestock and poultry excrement is combined with forestry and agricultural residues or kitchen garbage to serve as a fermentation raw material, and then an inoculant and the compound accelerant are added in order to perform fermentation while controlling the total solid content of anaerobic fermentation. By adopting the functional compound accelerant for methane fermentation, the methane yield is increased by 50 percent or more, and fermentation starting time is shortened; the functional compound accelerant is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of biogas fermentation, and relates to a functional additive formula for promoting biogas fermentation and a preparation method thereof. Background technique [0002] my country is a large animal husbandry country, with 1.2 billion pigs, 150 million cattle, 570 million sheep and 17.6 billion poultry annually raised. In recent years, although the proportion of large-scale breeding has continued to increase, the overall production level is still low, and the proportion of free-range farming is still high. According to the statistical survey of the State Environmental Protection Administration in 2016, my country's livestock and poultry breeding industry produces about 3.8 billion tons of livestock and poultry manure every year , and its effective treatment rate is less than 50%. On the other hand, the rapid development of urbanization in my country has led to a sharp increase in the urban population, which has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04
CPCC02F11/04C12P5/023Y02E50/30
Inventor 云斯宁黄欣磊
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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