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Kitchen waste disposal system and disposal method

A kitchen waste and treatment system technology, applied in the field of solid waste resource utilization, can solve the problems of unstable process, difficult anaerobic digestion, low methane yield, etc. Effect

Inactive Publication Date: 2020-07-24
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the process of anaerobic digestion of food waste with high solid content (total solid content > 15%) under high organic loading, the rapid accumulation of volatile organic acids often leads to problems such as low methane yield and process instability. Difficulty performing anaerobic digestion efficiently

Method used

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Embodiment Construction

[0031] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0032] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0033] Such as figure 1 As shown, the food waste treatment system of the present invention includes a pretreatment device, a diges...

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Abstract

The invention discloses a kitchen waste disposal system and a disposal method, and relates to the field of solid waste resource utilization. The disposal system comprises a pre-disposal device, a digestion device and a temperature control device, wherein, the pre-disposal device comprises kitchen waste sorting and selecting equipment, kitchen waste crushing equipment, oil-water separating equipment and a material storage tank; the digestion device comprises a feeding pump and a high solid content anaerobic digestion reactor; and the temperature control device comprises a thermometer, a water pump and a circulation water tank. An application method comprises the following steps: kitchen waste is pre-disposed; pre-disposed kitchen waste and high-solid-content (total solid content is greaterthan 15%) anaerobic sludge and biochar are loaded in the high solid content anaerobic digestion reactor for anaerobic digestion; and methane is collected and biogas residue is discharged. The system improves the methane production capacity of anaerobic digestion and disposal of kitchen waste, improves process stability, and meanwhile obtains high-quality organic fertilizer containing biochar.

Description

technical field [0001] The invention relates to the field of resource utilization of solid waste, in particular to a kitchen waste treatment system and treatment method. Background technique [0002] The Food and Agriculture Organization of the United Nations (FAO) defines food waste as healthy edible substances that are wasted, discarded and decomposed at any stage in the food supply chain. Due to factors such as dietary structure and living habits, the components of kitchen waste in different regions are different, but they are mainly composed of starch, protein, plant fiber and animal oil, etc., with high organic concentration and biodegradability. Food waste usually has high moisture content (75-90%), high volatile solid content (80-90%) and acidity (pH=4.4-5.8). [0003] With the rapid development of my country's economy, the catering industry has also developed rapidly. However, the generated kitchen waste has also become the focus of organic waste treatment. For exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00C12M1/107C12P5/02C05G3/80
CPCB09B3/00B09B5/00C05D1/00C12M21/04C12P5/023Y02E50/30
Inventor 张景新崔毓轩何义亮
Owner SHANGHAI JIAO TONG UNIV
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