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Straw dry anaerobic fermentation method based on soil multi-effect coupling effect

A coupled effect, dry anaerobic technology, used in fermentation, waste fuel, etc., can solve problems such as inefficient heat and mass transfer, and achieve the effect of inhibiting and controlling acid allergy, accelerating electron transfer, and enhancing the efficiency of electron transfer between species

Pending Publication Date: 2021-07-16
姚义清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a straw dry anaerobic fermentation method based on the multi-effect coupling effect of soil. The present invention is based on the multi-effect coupling effect of soil, by adding an appropriate amount of Soil, to solve the problem of low-efficiency heat and mass transfer in traditional fermentation systems

Method used

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  • Straw dry anaerobic fermentation method based on soil multi-effect coupling effect
  • Straw dry anaerobic fermentation method based on soil multi-effect coupling effect
  • Straw dry anaerobic fermentation method based on soil multi-effect coupling effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step 1, raw material pretreatment:

[0040] Crush the wheat straw and pass it through a 40-mesh sieve; air-dry the red loam naturally and pass it through a 40-mesh sieve to remove impurities;

[0041] Step 2, anaerobic fermentation:

[0042] It is carried out in a 500mL anaerobic reactor with an effective volume of 300mL. Add crop straw as a substrate, then add sludge from a sewage treatment plant as an inoculum, then add soil, pass nitrogen into the anaerobic reactor, and release Enter (37±2)°C incubator for anaerobic fermentation;

[0043] Among them, the dry weight of crop straw accounts for 15% of the effective reaction volume of the reactor, the dry weight of sludge accounts for 30% of the dry weight of the fermentation mixture, and the mass ratio of the dry weight of wheat straw to the dry weight of red loam is 1:1;

[0044] Shake the flask every 24 hours during the fermentation period, measure the pH in the anaerobic reactor every three days and collect the gas...

Embodiment 2

[0046] The preparation steps are the same as in Example 1, except that the mass ratio of the dry weight of wheat straw to the dry weight of red loam soil is replaced from 1:1 to 2.5:1.

Embodiment 3

[0048] The preparation steps are the same as in Example 1, except that the mass ratio of the dry weight of wheat straw to the dry weight of red loam soil is replaced from 1:1 to 5:1.

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Abstract

The invention relates to the technical field of biomass energy, and particularly relates to a straw dry anaerobic fermentation method based on a soil multi-effect coupling effect. The method comprises the following steps of: crushing crop straws, putting the crushed crop straws into a reactor, adding an inoculum, adding soil, and performing anaerobic fermentation until gas production is stopped. According to the method, based on multiple coupling effects such as acid-base buffering property, cation exchange property and enzymatic activity of components such as soil colloid, base ions and trace elements, quality and efficiency of biogas produced by dry anaerobic fermentation are improved, and an effective method is provided for solving the problem of low-efficiency heat and mass transfer of the traditional dry anaerobic fermentation.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a straw dry anaerobic fermentation method based on the multi-effect coupling effect of soil. Background technique [0002] my country is a large agricultural country, and the straw produced every year is as high as 900 million tons. If it is not used rationally, it will be used for incineration or feed, which will inevitably cause waste of resources and environmental pollution. Therefore, my country vigorously advocates the "energy, resource, and feed "chemical, raw material and base material" utilization; among them, the preparation of methane (CH 4 ) and other clean energy is a very promising technology to realize the utilization of straw resources and energy. , Reduce the pollution of fossil fuels to the environment and promote the development of agricultural green cycles. [0003] Anaerobic fermentation can be divided into dry fermentation and wet fermenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCC12P5/023Y02E50/30
Inventor 姚义清陈婧
Owner 姚义清