An environment-friendly straw oxygen pressure fermentation treatment process

Abstract

The invention discloses an environment-friendly process for anaerobic fermentation treatment of straw. The process comprises the steps of smashing treatment, pretreatment, solid phase fermentation treatment and liquid phase fermentation treatment. According to the scheme, before entering a pretreatment area, straw first is smashed into small sizes, and the degradation speed in the straw fermentation process is improved; during pretreatment, biogas slurry generated in a liquid fermentation area is used to soak the straw, waste of the biogas slurry is effectively avoided, and resource recycling is implemented; biogas residue generated in the solid phase fermentation treatment stage is resent into a hopper under the effect of a conveying belt to be re-fermented, and material waste is effectively avoided. Therefore, according to the scheme, the biogas slurry and the biogas residue generated in the fermentation process are recycled, waste is effectively avoided, and the process is very environmentally friendly.

Description

technical field [0001] The invention relates to a straw treatment process, in particular to an environment-friendly straw oxygen pressure fermentation treatment process. Background technique [0002] Straw usually refers to the remaining part of crops such as wheat, rice, and corn after the seeds are harvested. my country is a large agricultural country and is also a major producer of straw. Statistics show that in 2010, my country's theoretical straw resources amounted to 840 million tons, the amount of resources that could be collected was about 700 million tons, and the amount of resources that could be comprehensively utilized was about 500 million tons. However, due to the lack of effective treatment methods, about 247 million tons of straw Being directly incinerated will not only pollute the surrounding air environment, endanger human health, but also cause traffic accidents, affect road traffic and aviation safety, and is a waste of energy. At present, there are many ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are the following problems in the treatment process of oxygen fermentation using straw as raw material: 1. The biogas residue and biogas slurry produced in the process of oxygen fermentation cannot be effectively recycled, and these biogas residues and biogas slurry are discharged to the external environment , on the one hand, it causes a waste of resources, on the other hand, it also pollutes the environment to a certain extent.

2. The hyperbaric fermentation process generally includes solid-phase fermentation reaction and liquid-phase fermentation reaction. The traditional hyperbaric fermentation process requires artificial control of solid-phase fermentation reaction and liquid-phase fermentation reaction, which will greatly reduce the work of hyperbaric fermentation. efficiency and waste of human resources

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