Innocent treatment system and method for organic solid waste with residual plant source pathogenic bacteria

A technology for harmless treatment of organic solids, applied in the field of solid waste recycling, which can solve the problems of difficult to achieve effective inactivation of pathogenic microorganisms, safety risks, and fermentation failures.

Pending Publication Date: 2022-08-09
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the recycling of this kind of organic solid waste, if the innocence is not complete, it will inevitably bring potential safety risks to subsequent agricultural production, which will cause huge economic losses.
[0003] The treatment and utilization of organic solid waste mainly include aerobic composting and anaerobic dry fermentation. The maximum temperature of the fermentation process is limited to 55°C and 65°C respectively. If the temperature is too high, it will easily affect the reaction process and lead to fermentation failure.
Such high temperature conditions can eliminate some pathogenic microorganisms in waste, but it is difficult to achieve effective inactivation of pathogenic microorganisms that can withstand temperatures exceeding 70°C. The treatment products may still bring safety risks when applied to farmland, and cannot meet the safety requirements of agricultural production. need

Method used

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  • Innocent treatment system and method for organic solid waste with residual plant source pathogenic bacteria
  • Innocent treatment system and method for organic solid waste with residual plant source pathogenic bacteria
  • Innocent treatment system and method for organic solid waste with residual plant source pathogenic bacteria

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take vegetable waste as the main material, take appropriate crop straw and livestock and poultry feces as an auxiliary materials, adjust the particle size of the material to 5-15mm; adjust the matching parameters according to the appropriate C / N and the moisture content, and complete the initial material mixing after the initial material mixes The free airspace of the initial material is set to 65 %, the water -soluble carbon content is 12 %, the biodegradable organic matter content is 55 %, the proportion of the addition of the bacteria is 3 ‰ of the mixed material quality (the bacteria agent is VT1020, purchased from the Wo earth world and earth Biological Technology Co., Ltd). Add the mixed material to the reactor, and perform a 12-day compulsory ventilation at room temperature at a temperature of 15-20 ° C (the ventilation rate is 0.2L · min -1 · Kgdm -1 ) The biological conversion process under the condition is performed on the 3rd and 7th days. At the same time, the m...

Embodiment 2

[0044] Take vegetable waste as the main material, take appropriate crop straw and livestock and poultry feces as an auxiliary materials, adjust the particle size of the material to 5-15mm; adjust the matching parameters according to the appropriate C / N and the moisture content, and complete the initial material mixing after the initial material mixes The free airspace of the initial material is set to 60 %, the water -soluble carbon content is 10 %, the biodegradable organic matter content is 50 %, the proportion of bacteria added to the mixed material quality Biotechnology Co., Ltd.). Add the mixed material to the reactor, and the 7-day mandatory ventilation at room temperature at a temperature of 15-20 ° C (the ventilation rate is 0.15L · min -1 · Kgdm -1 ) The biological conversion process under the condition is about 60 % of the water content on the third day.

[0045] According to the biological conversion process performed above, the temperature has reached 73.2 ° C on the s...

Embodiment 3

[0048] Take vegetable waste as the main material, take appropriate crop straw and livestock and poultry feces as an auxiliary materials, adjust the particle size of the material to 5-15mm; adjust the proportion parameters according to the appropriate C / N and moisture content, and complete the initial material mixing After that, the free airspace of the initial material was set to 65 %, the water -soluble carbon content was 12 %, the biodegradable organic matter content was 55 %, the proportion of the fungus added to the mixed material quality Tiandi Biotechnology Co., Ltd.). Add the mixed material to the reactor, and the 7-day mandatory ventilation at room temperature at a temperature of 15-20 ° C (the ventilation rate is 0.2L · min -1 · Kgdm -1 ) The biological conversion process under the condition is about 60 % of the water content on the third day.

[0049] According to the biological conversion process performed above, the temperature has reached 72.8 ° C on the second day, a...

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Abstract

The invention discloses a harmless treatment system and method for organic solid waste with residual plant source pathogenic bacteria and a harmless biotransformation method for vegetable waste. According to the method, through the steps of material pretreatment, material blending, bioconversion process control, harmless evaluation and the like, specific process parameters, coefficients and the like are adjusted to achieve conditions required by harmless treatment. The method is used for inactivating plant source pathogenic bacteria in vegetable waste and eliminating safety risks in the subsequent utilization process. The conversion method provided by the invention is designed on the basis of energy density and physical, chemical and biological characteristics of materials, the ultra-high temperature process is realized by gradually adjusting the materials and process parameters, the application range comprises but is not limited to vegetable wastes, and other organic wastes possibly having safety risks can be processed by the method. The aim of inactivating pathogenic bacteria is fulfilled.

Description

Technical field [0001] The present invention is a field of solid waste resource -based, involving the harmless treatment of organic solid waste and the recycling of resourceization, and specially involves a harmless treatment method for the original organic solid waste of the residual plant source disease. Background technique [0002] The production of crops in my country is affected by climate conditions and farming models. Plant diseases have aggravated year by year. The dangers of residual diseases in their waste cannot be ignored. In 3 years, long -term survival has formed a source of infection. Under the circumstances of high temperature, high humidity, heavy stubble, ground and soil sticky, field water, soil acidity, or proper nitrogen fertilizer, it will increase the harm of the primary bacteria to plants. Some plant -source diseases still have a considerable survival in the feed to feed the livestock. In the cycle utilization of this type of organic solid waste, if it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05F17/80
CPCC05F3/00C05F17/80C05F5/002C05F11/00C05F11/08Y02W30/40
Inventor 李彦明常瑞雪王珏薛晶晶刘禹晟
Owner CHINA AGRI UNIV
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