Kitchen waste desalting, fermenting and composting technology

A food waste and desalination technology, which is applied to organic fertilizers, fertilization devices, fertilizer mixtures, etc., can solve the problems of restricting microbial fermentation efficiency, high moisture content of domestic waste, and unstable incineration process, so as to improve resource utilization efficiency and automation High degree, realize the effect of resource utilization

Inactive Publication Date: 2021-08-06
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Landfill occupies land resources; due to the high moisture content in domestic waste, the incineration process is unstable and has high potential safety hazards
Compost uses microorganisms to degrade and transform it. However, the presence of salt restricts the fermentation efficiency of microorganisms on the one hand, and seriously hinders its soil application in compost products on the other hand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A food waste desalination fermentation and composting technology, which adopts continuous adding of organic waste, uses the extrusion and crushing effect of double-screw conveying combined with water washing, after the food waste is desalted, the solid matter is fermented to ensure the composting process is efficient, stable and continuous, In this way, the efficient reduction, harmlessness and recycling of food waste can be realized, and the influence of salt on the recycling products can be effectively removed. The steps are as follows:

[0020] 1) After mixing the food waste composed of canteens and catering enterprises with water at a ratio of 10:2, the food waste is squeezed and crushed by a double-screw conveying device, and then continuously enters the aerobic composting reaction device after dehydration;

[0021] 2) After the material enters the aerobic reaction device, after staying in the raw material adjustment area for a period of time, it is further dehydrat...

Embodiment 2

[0028] A food waste desalination fermentation and composting technology, which adopts continuous adding of organic waste, uses the extrusion and crushing effect of double-screw conveying combined with water washing, after the food waste is desalted, the solid matter is fermented to ensure the composting process is efficient, stable and continuous, In this way, the efficient reduction, harmlessness and recycling of food waste can be realized, and the influence of salt on the recycling products can be effectively removed. The steps are as follows:

[0029] 1) After mixing the food waste composed of kitchen waste, fruit and vegetable waste from canteens, catering enterprises, and residential waste sorted with water at a ratio of 10:4, the food waste is squeezed and crushed by a double-screw conveying device, and dehydrated Continuously enter the aerobic composting reactor;

[0030] 2) After the material enters the aerobic reaction device, after staying in the raw material adjustm...

Embodiment 3

[0037] A food waste desalination fermentation and composting technology, which adopts continuous adding of organic waste, uses the extrusion and crushing effect of double-screw conveying combined with water washing, and after the food waste is desalted, the solid matter is fermented to ensure that the composting process is efficient, stable and continuous. In this way, the efficient reduction, harmlessness and recycling of food waste can be realized, and the influence of salt on the recycling products can be effectively removed. The steps are as follows:

[0038] 1) After mixing the food waste composed of food waste from catering enterprises and residents after classification with water at a ratio of 10:3, the food waste is squeezed and crushed by a double-screw conveying device, and then enters aerobic composting continuously after dehydration reaction device;

[0039] 2) After the material enters the aerobic reaction device, after staying in the raw material adjustment area ...

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PUM

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Abstract

The invention relates to a kitchen waste desalting, fermenting and composting technology. Organic waste is continuously added, the extruding and crushing effects of double-screw conveying are matched with water washing, after the kitchen waste is desalted, solid substances are fermented, and the efficient, stable and continuous composting process is ensured, so that the efficient reduction, harmlessness and recycling of the kitchen waste are realized, and the influence of salt on resource products is effectively removed. The technology has the advantages of simplicity and convenience in operation, simple process, high automation degree, small occupied area and the like, and circulating water is used for desalting treatment, so that the utilization efficiency of water resources is improved, and meanwhile, the resource value of products is greatly improved; and the application of the technology can effectively reduce the pollution of the kitchen waste to the environment, and also realizes the resource utilization of the waste.

Description

technical field [0001] The invention relates to a method for aerobic fermentation and composting of kitchen waste, in particular to a technology for desalination, fermentation and composting of kitchen waste. Background technique [0002] Kitchen waste, commonly known as swill, also known as swill and swill, is domestic waste formed by residents in the process of daily consumption. The main components include rice and flour food residues, vegetables, animal and vegetable oils, meat and bones, etc. From the chemical composition, Contains starch, cellulose, protein, lipid and inorganic salts. It has the characteristics of rich organic matter content, high water content and perishability. Its properties and odor will have a bad impact on environmental sanitation, and it is easy to breed harmful pathogenic microorganisms and mycotoxins. substance. Due to improper disposal methods, it has become a potential source of danger affecting food safety and ecological security. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/04C05G3/80
CPCC05F9/04C05D9/00C05G3/80Y02A40/20
Inventor 李维尊季鹏于明言
Owner NANKAI UNIV
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