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Method and device for electromagnetic enhanced wood fiber liquefying-jet rotational flow multi-level energy conversion

A technology of wood fiber and electromagnetic strengthening, which is applied in biochemical cleaning devices, biochemical equipment and methods, methods for stress-stimulated microbial growth, etc., can solve problems such as low degradation rate and easy crusting of fermentation tanks

Pending Publication Date: 2018-01-02
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the disadvantages of low degradation rate of lignin, cellulose and hemicellulose, easy crusting of fermentation tank and mutual inhibition of stage microorganisms in the existing anaerobic digestion method for biomass energy production. The object of the present invention is to provide a method for electromagnetically strengthening wood fiber liquefaction-jet swirling multi-stage energy conversion, which has high degradation efficiency of lignin, cellulose and hemicellulose, stage-by-stage strengthening of microbial flora advantages, process The conditions and biomass energy products are controllable, and the operation process is simple, etc.; specifically, the following steps are included:

Method used

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  • Method and device for electromagnetic enhanced wood fiber liquefying-jet rotational flow multi-level energy conversion
  • Method and device for electromagnetic enhanced wood fiber liquefying-jet rotational flow multi-level energy conversion
  • Method and device for electromagnetic enhanced wood fiber liquefying-jet rotational flow multi-level energy conversion

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Effect test

Embodiment 1

[0058] The treatment object of this embodiment: domestic sewage of a city sewage treatment plant, its COD is 300-400mg / L, BOD is 200mg / L, ammonia nitrogen is 30mg / L, total phosphorus is 2-3mg / L, cellulose, hemifiber The content of lignin and lignin is 30%.

[0059] The anaerobic fermentation process of domestic sewage in this embodiment is carried out independently in stages, specifically including the following three stages:

[0060] (1) Pretreatment and hydrolysis section: the pre-purchased and cultivated composite strain MC1 is divided into 5×10 9 The inoculum amount of cfu / mL is evenly mixed with the raw materials, and the pH of the mixture is adjusted to 5 by acetic acid, and the mixture is sent tangentially into the hydrolysis tank at 6m / s to form a stable swirl in the tank. Under the action of 0.8V and a magnetic field strength of 0.5T, carry out hydrolysis treatment for 24 hours to strengthen the degradation of cellulose, hemicellulose and lignin in the raw materials;...

Embodiment 2

[0071] The treatment object of this embodiment: the dairy cow manure filtrate produced by a certain dairy farming factory, its COD is 40000~50000mg / L, BOD is 20000-30000mg / L, ammonia nitrogen 40mg / L, cellulose, hemicellulose and lignin content are 70%; cow manure filtrate passed through 80 mesh sieve;

[0072] The anaerobic fermentation process of domestic sewage in this embodiment is carried out independently in stages, specifically including the following three stages:

[0073] (1) Pretreatment hydrolysis section: Mix the pre-purchased and cultivated Phanerochaete chrysosporium and Penicillium rugosa in a mass ratio of 6:4, and mix them with 6.5×10 9 The inoculation density of cfu / mL is uniformly mixed with the raw materials, the pH of the mixture is adjusted to 4 by citric acid, and the mixture is sent tangentially into the hydrolysis tank at 8m / s to form a stable swirl in the tank. Under the action of 1V and a magnetic field strength of 5T, carry out hydrolysis treatment ...

Embodiment 3

[0079] The processing object of this embodiment: waste vegetables in a certain vegetable cultivation base, its COD is 50000mg / L, BOD is 30000mg / L, and the content of cellulose, hemicellulose and lignin is 80%;

[0080] The anaerobic fermentation process of domestic sewage in this embodiment is carried out independently in stages, specifically including the following three stages:

[0081] (1) Pretreatment and hydrolysis section: the pre-purchased and cultivated compound strain WSC-6 according to 4×10 9 The inoculum amount of cfu / mL is evenly mixed with the raw materials, the pH of the mixture is adjusted to 5.1 by citric acid, and the mixture is sent tangentially into the hydrolysis tank at 10m / s to form a stable swirl in the tank. Under the action of 1.5V and a magnetic field strength of 9T, carry out hydrolysis treatment for 20 hours to strengthen the degradation of cellulose, hemicellulose and lignin in the raw materials; after the hydrolysis is completed, pass high-tempera...

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Abstract

The invention relates to a method and device for electromagnetic enhanced wood fiber liquefying-jet rotational flow multi-level energy conversion. According to the invention, an anaerobic fermentationprocess is divided into three stages of hydrolysis, acidification and fermentation which are independently performed; the electromagnetic enhanced cellulose, hemicellulose and lignin are hydrolyzed and liquefied, so that the degradation of the microorganism for the cellulose, hemicellulose and lignin is greatly improved; the three stages are independently performed, the dominant bacteria in all the stages are fully utilized and the organic compound controlled under the reaction conditions in the three stages can be anaerobically digested so as to acquire target biomass energy; due to the application of rotational flow air flotation, the raw material substrate is in full contact with the microorganism in fermenting liquor, the heat and mass transfer effect is excellent, the occurrence of the phenomena, such as, crusting and ammonia restraining, in the fermentation process can be effectively avoided, the biochemical reaction speed is greatly increased and the generation of the biomass energy is benefited; the method provided by the invention is simple; the device is easily manufactured; the method and the device are suitable for resource utilization, such as, urban and rural organicwastewater in the areas of highland, high and cold area, and the like.

Description

technical field [0001] The invention belongs to the technical field of waste resource production of biomass energy, and in particular relates to a method and device for electromagnetically strengthening wood fiber liquefaction-jet swirling multi-stage energy conversion. Background technique [0002] With the development of industry and agriculture and the improvement of human living standards, human demand for fossil energy such as coal, oil, and natural gas is increasing day by day. However, with the continuous exploitation of human beings, the depletion of fossil energy is inevitable. Century will be exhausted. [0003] Biomass energy is a renewable resource, and biomass energy can be regenerated through photosynthesis of plants. The use of organic waste anaerobic fermentation to produce biomass energy can not only effectively solve the problem of environmental pollution, but also alleviate human demand for fossil energy, which is one of the effective ways to solve energy...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12P3/00C12P7/10C12M1/42C12M1/107C12M1/04C12M1/00C02F11/04
CPCY02E50/10Y02E50/30
Inventor 瞿广飞李巍安之何康
Owner KUNMING UNIV OF SCI & TECH
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