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Method for producing methane through straw anaerobic fermentation of promoted through combination with additives

An anaerobic fermentation and biomethane technology, applied in fermentation, biological sludge treatment, waste fuel, etc., can solve the problems of affecting the reaction stage, separate regulation, and inconvenient stages, so as to promote degradation and transformation, speed up the reaction process, The effect of improving production efficiency

Pending Publication Date: 2019-12-31
湖北正江环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The methane production process of straw anaerobic fermentation is often carried out in multiple reaction stages simultaneously, and it is not convenient to control each stage separately. The regulation of one reaction stage often affects the other reaction stage.

Method used

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  • Method for producing methane through straw anaerobic fermentation of promoted through combination with additives
  • Method for producing methane through straw anaerobic fermentation of promoted through combination with additives
  • Method for producing methane through straw anaerobic fermentation of promoted through combination with additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: verify the effect of the present invention on the mixed fermentation and decomposition process of rice straw and pig manure, comprising the following steps:

[0036] 1) Configuration of mixed fermentation substrate: mix crushed straw (3-5 cm in length) with a dry weight of 70 g and pig manure of the same dry weight to form a mixed fermentation substrate.

[0037] 2) Mixed filling of fermentation substrate and paddy soil in the anaerobic reactor: fill the anaerobic reactor (2 L) with a dry weight of 100 g of paddy soil and 140 g of the mixed fermentation substrate, and shake well.

[0038] 3) Configuration and addition of additives: Take 1L of distilled water, add 0.2g of Tween 20 and 0.84g of NaHCO respectively 3 , and shake well to form a compound additive; add the additive into the reactor, and mix it evenly with the reaction matrix. 3 treatments were set up repeatedly, and a control group (3 repetitions) was set up.

[0039] 4) Sealing and connection ...

Embodiment 2

[0041] Embodiment 2: verify the effect of the present invention on rice straw and pig manure mixed fermentation volatile fatty acids, comprising the following steps:

[0042] 1) Configuration of mixed fermentation substrate: mix crushed straw (3-5 cm in length) with a dry weight of 70 g and pig manure of the same dry weight to form a mixed fermentation substrate.

[0043]2) Mixed filling of fermentation substrate and paddy soil in the anaerobic reactor: fill the anaerobic reactor (2 L) with a dry weight of 100 g of paddy soil and 140 g of the mixed fermentation substrate, and shake well.

[0044] 3) Configuration and addition of additives: Take 1L of distilled water, add 0.2g of Tween 20 and 0.84g of NaHCO respectively 3 , and shake well to form a compound additive; add the additive into the reactor, and mix it evenly with the reaction matrix. 3 treatments were set up repeatedly, and a control group (3 repetitions) was set up.

[0045] 4) Sealing and connection of the reacto...

Embodiment 3

[0054] Embodiment 3: verifying the effect of the present invention on rice straw and pig manure mixed fermentation biomethane production, including the following steps:

[0055] 1) Configuration of mixed fermentation substrate: mix crushed straw (3-5 cm in length) with a dry weight of 70 g and pig manure of the same dry weight to form a mixed fermentation substrate.

[0056] 2) Mixed filling of fermentation substrate and paddy soil in the anaerobic reactor: fill the anaerobic reactor (2 L) with a dry weight of 100 g of paddy soil and 140 g of the mixed fermentation substrate, and shake well.

[0057] 3) Configuration and addition of additives: Take 1L of distilled water, add 0.2g of Tween 20 and 0.84g of NaHCO respectively 3 , and shake well to form a compound additive; add the additive into the reactor, and mix it evenly with the reaction matrix. 3 treatments were set up repeatedly, and a control group (3 repetitions) was set up.

[0058] 4) Sealing and connection of the re...

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Abstract

The invention belongs to the technical field of biomass new energy resources, and discloses a method for producing methane through straw anaerobic fermentation promoted through combination with additives. The method comprises the steps of mixing straw of which the dry weight is 70g and which is crushed with pig manure with the same dry weight as the straw to form a mixed fermentation substrate; enabling paddy oil of which the dry weight is 100g and 140g of the mixed fermentation substrate to be stuffed into an anaerobic reactor, and performing shaking up; taking 1L of distilled water, separately adding 0.2g of Tween 20 and 0.84g of NaHCO3, and performing shaking up to form a compound additive; adding the additive to the reactor, sealing the reactor, and performing connection; and periodically observing the gas collecting state, and determining gas volume and methane content. According to the method, the reaction process can be accelerated, the straw and the breeding waste can be efficiently converted into biological methane at a low cost, and the production benefits are increased. The method solves the problem of harmless disposal of the manure, the agricultural soils are improved,the generation of diseases and insect pests is reduced, and the method is worth of promotion and application.

Description

technical field [0001] The technical field of new biomass energy of the present invention relates in particular to a method for combining additives to promote anaerobic fermentation of straw to produce biomethane, which is a method for converting organic matter of straw and farmyard manure into New technologies for biomethane. Background technique [0002] Currently, the closest prior art: [0003] China is the main producer of rice, and the annual output of rice straw reaches 1.752×10 8 t. The harmless treatment of rice straw and breeding waste is the core issue of rural ecological environment protection in my country. Due to the high transportation cost of straw, low nutrient content and the production of greenhouse gases, the application of rice straw in biomass power generation, bio-feed and straw returning to the field has been limited. The method of producing biomethane through anaerobic fermentation of straw and breeding waste in the field can effectively solve th...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04
CPCC12P5/023C02F11/04Y02E50/30
Inventor 陈芳清张行黄永文秦凯官守鹏谭向前刘杨赟
Owner 湖北正江环保科技有限公司
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