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Environmentally friendly disposal methods of food waste

An environmental protection treatment and waste technology, applied in the field of environmental protection treatment of food waste, can solve the problems that plague production enterprises and environmental protection departments, low thermal efficiency of food waste, low efficiency of resource utilization, etc., and achieve energy resource conservation and good promotion Application prospects, easy-to-operate effects

Active Publication Date: 2021-10-15
武汉绿农瑞益生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign countries, a mature environmental protection industry has been formed for the recycling of food waste; while in China it is still in its infancy, and the treatment methods for food processing waste are relatively limited, mainly including incineration and landfill. , food waste is not only thermally inefficient, but also produces toxins that pollute the environment, and when disposed of in landfills, it becomes a major source of seepage water that contaminates ground and ground water as well as soil
In addition, a large amount of waste generated in the processing of pasta, seafood processing, beverages, vegetable oil, etc. has not been able to be effectively disposed of, and has always been a problem for production enterprises and environmental protection departments.
Therefore, in the resource treatment of food waste at the present stage, there are defects of low resource utilization efficiency and unsatisfactory economic benefits.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] An environmentally friendly treatment method for food waste, comprising the steps of:

[0057] Ⅰ. Pretreatment: According to the mass ratio of 100:20, mix food waste and rice husk, put it under the conditions of 135°C and 0.3MPa working pressure for 20 minutes, crush it to 40 mesh, and finally put it in Dry to 10wt% at 50°C to obtain a pretreated mixture;

[0058] Ⅱ. Fermentation: Add fermenting agent to the above-mentioned pretreated mixture, the mass ratio of the pretreated mixture and fermenting agent is 100:10, stir at 70°C at a speed of 24r / min for 3h, then Placed under the condition of 50°C for aerobic fermentation for 10 days to obtain a fermentation product;

[0059] Ⅲ. Drying: Dry the above-mentioned fermentation product at 70°C and an absolute pressure of 0.04MPa for 2 hours to obtain an organic compound fertilizer.

[0060] The food waste is obtained by mixing pomelo pomace residue, potato peel, and citrus residue in a mass ratio of 3:1:1, crushing through ...

Embodiment 2

[0064] An environmentally friendly treatment method for food waste, comprising the steps of:

[0065] Ⅰ. Pretreatment: According to the mass ratio of 100:20, mix food waste and rice husk, put it under the conditions of 135°C and 0.3MPa working pressure for 20 minutes, crush it to 40 mesh, and finally put it in Dry to 10wt% at 50°C to obtain a pretreated mixture;

[0066] Ⅱ. Fermentation: Add fermenting agent, alkali-treated attapulgite and sepiolite to the above-mentioned pretreated mixture, and the pretreated mixture, fermenting agent, alkali-treated attapulgite and sepiolite The mass ratio is 100:10:5:5, stirred at 70°C at a speed of 24r / min for 3h, and then placed at 50°C for aerobic fermentation for 10 days to obtain a fermentation product;

[0067] Ⅲ. Drying: Dry the above-mentioned fermentation product at 70°C and an absolute pressure of 0.04MPa for 2 hours to obtain an organic compound fertilizer.

[0068] The food waste is obtained by mixing pomelo pomace residue, po...

Embodiment 3

[0072] An environmentally friendly treatment method for food waste, comprising the steps of:

[0073] Ⅰ. Pretreatment: According to the mass ratio of 100:20, mix food waste and rice husk, put it under the conditions of 135°C and working pressure of 0.3MPa, sterilize under high temperature and high pressure for 20 minutes, and crush it to 40 mesh to obtain sterilization food waste; the above-mentioned sterilized food waste was dried at 50°C to a moisture content of 16wt%, then extruded at 170°C for 20s, cooled to 25°C, and finally dried at 50°C to 10wt% , to obtain the pretreated mixture;

[0074] Ⅱ. Fermentation: Add fermenting agent, alkali-treated attapulgite and sepiolite to the above-mentioned pretreated mixture, and the pretreated mixture, fermenting agent, alkali-treated attapulgite and sepiolite The mass ratio is 100:10:5:5, stirred at 70°C at a speed of 24r / min for 3h, and then placed at 50°C for aerobic fermentation for 10 days to obtain a fermentation product;

[0...

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Abstract

The invention discloses an environment-friendly treatment method for food waste. The environmental protection treatment method of food waste comprises the following steps: Ⅰ. pretreatment; Ⅱ. fermentation; Ⅲ. drying. The environmental protection treatment method of food waste of the present invention uses food waste as raw material, realizes food waste recycling, high efficiency, energy saving and recycling, has the characteristics of green environmental protection, energy resource saving, etc., and has simple process, easy operation, and preparation The obtained organic compound fertilizer can provide nutrients for plants for a long time, can significantly improve soil structure, enhance soil fertility, promote crop growth, enhance crop disease resistance, and play a role in water retention. It can reduce crop diseases while increasing crop production and income. Good prospects for promotion and application.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to an environment-friendly treatment method for food waste. Background technique [0002] Food waste refers to the perishable garbage produced by people in the process of buying, selling, storing, processing and eating various foods, which covers all food-related waste, including kitchen waste, slops, food waste content. As the main component of municipal solid waste, food waste accounts for about 50% of municipal solid waste. According to the current per capita generation of urban domestic waste at 1 kg per person per day, a city with a population of 1 million will generate about 1,000 tons of organic waste per day, and the annual amount of organic waste will be as high as 360,000 tons. Among them, the processing wastes generated in the production process of the food industry are mostly food residues, which account for about 30-42% of the waste, in addition to about 2-5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/80C05F17/20
CPCY02W30/40
Inventor 陈鲜红
Owner 武汉绿农瑞益生物科技有限公司
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