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Kitchen garbage processing method and application

A technology of food waste and treatment methods, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve problems such as improper disposal methods, affecting food safety and ecological safety, and achieve simple and easy-to-operate treatment process Strong, reduce environmental pollution effect

Inactive Publication Date: 2018-03-02
GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the lack of attention and improper disposal methods, it has become a potential source of danger affecting food safety and ecological security.

Method used

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  • Kitchen garbage processing method and application

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Experimental program
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Effect test

Embodiment 1

[0030] This embodiment provides a treatment method for kitchen waste, which mainly includes:

[0031] Screen the kitchen waste to remove waste such as broken tableware, glass, used cans and stones.

[0032] A filter press is used to filter and dehydrate the screened kitchen waste to obtain the first oil-water mixture and filter residue.

[0033] Under the condition of vacuum degree of -0.01MPa and pyrolysis temperature of 350°C, vacuum pyrolysis is carried out on the press filter residue for a pyrolysis time of 30 minutes to obtain the second oil-water mixture and pyrolysis residue. A granulator is used to granulate the pyrolysis slag, and the particle diameter of the obtained activated carbon particles is 0.2 cm.

[0034] The oil-water separation of the first oil-water mixture and the second oil-water mixture is carried out by adopting gravity separation and centrifugal separation to obtain grease and waste water. A spiral vertical ozone reactor was used to oxidize the wast...

Embodiment 2

[0036] This embodiment provides a treatment method for kitchen waste, which mainly includes:

[0037] Screen the kitchen waste to remove waste such as broken tableware, glass, used cans and stones.

[0038] A filter press is used to filter and dehydrate the screened kitchen waste to obtain the first oil-water mixture and filter residue.

[0039] Under the condition of vacuum degree of -0.1MPa and pyrolysis temperature of 700°C, vacuum pyrolysis was carried out on the press filter residue for 90 minutes to obtain the second oil-water mixture and pyrolysis residue. A granulator is used to granulate the pyrolysis slag, and the particle diameter of the obtained activated carbon particles is 0.5 cm.

[0040] The oil-water separation of the first oil-water mixture and the second oil-water mixture is carried out by adopting gravity separation and centrifugal separation to obtain grease and waste water. A spiral vertical ozone reactor was used to oxidize the wastewater under the con...

Embodiment 3

[0042] This embodiment provides a treatment method for kitchen waste, which mainly includes:

[0043] Screen the kitchen waste to remove waste such as broken tableware, glass, used cans and stones.

[0044] A filter press is used to filter and dehydrate the screened kitchen waste to obtain the first oil-water mixture and filter residue.

[0045]Under the conditions of vacuum degree of -0.05MPa and pyrolysis temperature of 550°C, vacuum pyrolysis was carried out on the press filter residue for a pyrolysis time of 40 minutes to obtain the second oil-water mixture and pyrolysis residue. A granulator is used to granulate the pyrolysis slag, and the particle diameter of the obtained activated carbon particles is 0.3 cm.

[0046] The oil-water separation of the first oil-water mixture and the second oil-water mixture is carried out by adopting gravity separation and centrifugal separation to obtain grease and waste water. A spiral vertical ozone reactor was used to oxidize the was...

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Abstract

The invention provides a kitchen garbage processing method and application, and relates to the field of resource recovery. The kitchen garbage processing method comprises the following steps: carryingout filter pressing dehydration on screened kitchen garbage to obtain first oil-water mixture and filter pressing slags; carrying out vacuum pyrolysis on the filter pressing slags to obtain pyrolysisslags and second oil-water mixture, and carrying out granulation on the pyrolysis slags to obtain activated carbon; carrying out oil-water separation on the first oil-water mixture and second mixtureto obtain grease and wastewater, and realizing standard-reaching discharge after the wastewater is subjected to oxidation treatment. The method has the advantages of convenience in operation, high controllability, resource recycling, economic benefit and social benefit, wastes are changed to treasure, and environment pollution is lightened.

Description

technical field [0001] The invention relates to the field of resource recovery, and in particular to a processing method and application of kitchen waste. Background technique [0002] Kitchen waste, commonly known as swill, also known as swill and swill, is the domestic waste formed by residents in the process of daily consumption. It is easy to rot and deteriorate, emits foul smell, and spreads bacteria and viruses. The main components of food waste include rice and flour food residues, vegetables, animal and vegetable oils, meat and bones, etc. From the chemical composition, there are starch, cellulose, protein, lipids and inorganic salts. The main characteristics of kitchen waste are rich in organic matter, high in water content, and perishable. Its properties and odor will have a bad impact on environmental sanitation, and it is easy to breed harmful substances such as pathogenic microorganisms and mycotoxins. The table waste in China is astonishing, and a huge amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00B09B2101/02
Inventor 任杰陈楠纬孙水裕杨帆叶茂友林伟雄任随周张文治赵科明任珂
Owner GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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