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A method for increasing the gas production of biogas fermentation

A biogas fermentation and gas production technology, applied in fermentation, waste fuel, etc., can solve the problems of human and financial loss, low gas production, and inability to obtain

Active Publication Date: 2021-05-18
JIANGSU ZHONGKE HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the actual popularization and application of biogas, the gas production in the fermentation process is low, and a large biogas production cannot be obtained during fermentation, which undoubtedly leads to a waste of fermentation resources and a loss of human and financial resources.

Method used

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  • A method for increasing the gas production of biogas fermentation

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Embodiment 1

[0032] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0033] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0034] (2) Mix the straw residue and 0.02 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 8 times the weight of the straw residue, stir well, seal the reactor, and treat it at 40kPa and 130°C for 20 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0035] (3) Preparation of inoculum: Mix activated sludge and human and animal manure evenly according to the mass ratio of 1:0.3, cover with plastic film, stack for 2 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0036] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add magne...

Embodiment 2

[0044] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0045] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0046] (2) Mix the straw residue with 0.03 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 10 times the weight of the straw residue, stir well, seal the reactor, and treat it at 60kPa and 150°C for 30 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0047] (3) Preparation of inoculum: Mix activated sludge with human and animal manure at a mass ratio of 1: 0.4, cover with plastic film, stack for 3 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0048] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add magnesium-based oliv...

Embodiment 3

[0056] A method for improving the gas yield of biogas fermentation, comprising the following steps:

[0057] (1) Cut and pulverize the dry straw to make straw powder, add water to mix, then transfer to an ultrasonic crusher, and perform intermittent crushing to obtain straw slag;

[0058] (2) Mix the straw residue with 0.02 times the weight of calcium peroxide evenly and transfer it to the reactor, then add water 10 times the weight of the straw residue, stir well, seal the reactor, and treat it at 40kPa and 150°C for 20 minutes. Cool naturally to room temperature to obtain the hydrothermally pretreated straw slurry for subsequent use;

[0059] (3) Preparation of inoculum: Mix activated sludge with human and animal manure according to the mass ratio of 1: 0.4, cover with plastic film, stack retting for 2 days, and then use 60 Co gamma-ray irradiation to obtain the inoculum;

[0060] (4) Add the inoculum obtained in step (4) to the straw slurry obtained in step (2), then add ...

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Abstract

The invention provides a method for increasing the gas production of biogas fermentation. The method comprises anaerobic fermentation of straw slurry, inoculum, magnesium-based olivine powder and mullite powder to produce biogas, the fermentation period is short, and the gas production of biogas fermentation can be effectively increased. Straw slurry is obtained through ultrasonic crushing and hydrothermal treatment, which increases the contact area between straw components and microorganisms and improves the efficiency of anaerobic fermentation; 60 Irradiated by Coγ‑rays, it promotes the degradation of organic matter; magnesium-based olivine powder and mullite powder are rich in metal elements such as magnesium and aluminum, which can play a catalytic role, promote the improvement of fermentation efficiency, and shorten the fermentation cycle.

Description

technical field [0001] The invention relates to the technical field of biogas fermentation, in particular to a method for increasing the gas production of biogas fermentation. Background technique [0002] With the development of society and the continuous improvement of people's living standards, energy crisis and environmental pollution have become important factors affecting the social progress of our country; using biogas microorganisms to ferment and decompose organic matter under anaerobic conditions to produce a flammable gas-biogas, which has already It has become one of the important means to alleviate the resource and energy crisis faced by our country in recent years; [0003] At present, rural biogas construction has become an important part of my country's energy development strategy. Biogas is one of the four major renewable energy sources that my country vigorously develops; speed up the development of rural clean energy, continue to increase investment in rur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P5/02
CPCC12P5/023C12P2201/00C12P2203/00Y02E50/30
Inventor 李德民
Owner JIANGSU ZHONGKE HEAVY IND CO LTD
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