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A kind of food waste sorting and screening process

A food waste and sieving technology, applied in the direction of solid waste removal, etc., can solve the problems of food waste easy to deteriorate and smell, the distribution of food waste is scattered, and the utilization rate is less than 40%, so as to improve the utilization value and save The effect of low resource and production costs

Inactive Publication Date: 2016-03-09
青岛中科海水处理有限公司
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AI Technical Summary

Problems solved by technology

Such a huge amount of resources, but the annual utilization rate is less than 40%
[0004] The production of food waste is large, but the unfavorable factor is that the distribution of food waste is scattered, which adds many difficulties to centralized recycling
On the other hand, food waste is easy to deteriorate and smell, which increases the unfavorable factors in the process of recycling

Method used

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  • A kind of food waste sorting and screening process
  • A kind of food waste sorting and screening process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. One-stage sieving, the process flow is as follows: figure 1 shown.

[0026] The collected food waste is put into the high-level food waste storage tank by the bucket elevator, and discharged into the hydraulic grid conveying tank from the sewage outlet at the bottom of the storage tank. The upper end of the hydraulic grid conveying tank is a receiving hopper, and there are cleaning teeth in the receiving hopper The rake tore apart the plastic bags and food boxes wrapped in some garbage, exposing the garbage and facilitating recycling; the hydraulic grid conveying trough is inclined at 25 degrees, and the garbage moves downward with the water flow from the high-end hopper, and passes through the large, medium and small three-layer grids. Barriers, so that food packaging bags, food boxes, chopsticks, fish, meat and bones are intercepted; relatively soft materials are conveyed into the low-level kitchen waste storage tanks, and food packaging bags are manually sorted an...

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Abstract

The invention relates to a kitchen waste screening technology. The technology comprises the steps that kitchen waste is fed into a high-level storage tank and is discharged into a hydraulic grille conveying chute from the bottom of the storage tank; soft material is conveyed to a low level storage tank after primary screening; the kitchen waste is ground into thick liquid after being subjected to coarse grinding, fine grinding and secondary grinding; after organic slurry enters a reaction still, steam is fed into the reaction still, and the organic slurry is heated to 50 DEG C and the pH value is adjusted to 4; standing and layering are performed; a grease part is subjected to emulsion breaking and floats to form a grease layer; a protein part sinks to form a protein layer; a middle part comprises starch and cellulose constituents and belongs to a starch cellulose layer; different classes of products are respectively discharged. The technology has the advantages that the material resource is rich, the technical process is safe and environmentally friendly, the technology is simple to operate, the production cost is low, different separated products can be used for further resource utilization, the utilization value is improved, and resources are saved.

Description

Technical field: [0001] The invention relates to a kitchen waste treatment process, in particular to a kitchen waste sorting process. Background technique: [0002] According to statistics from the Research Center for Solid Waste Pollution Control and Recycling of Tsinghua University, the annual output of urban kitchen waste in China is more than 60 million tons. If the dry matter food intake of these kitchen wastes is calculated, the internal food energy is equivalent to the energy output of 10 million mu of arable land. If every 100 tons of food waste can produce about 3 tons of biodiesel, the annual production of biodiesel is 1.6 million tons, and there are many carbohydrates and proteins in addition to waste oil. Such a huge amount of resources, but the annual utilization rate is less than 40%. [0003] Food waste refers to the food waste generated by food processing, catering services, unit meals and other activity centers other than residents' daily life. Compared w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 徐权汉徐志刚郑典君郑德志
Owner 青岛中科海水处理有限公司
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