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Garbage treatment method and equipment using vibration screening

A kind of garbage treatment equipment and garbage treatment technology, applied in the direction of bio-organic part treatment, combined biological treatment, recycling technology, etc., can solve the problems of inability to provide selectivity, difficult to use fine mesh, etc.

Active Publication Date: 2019-03-05
SUEZ ENVIRONNEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Unfortunately, at present, it is difficult to use fine mesh without encountering clogging problems
Thus, existing devices use larger mesh sizes that avoid loss of organics but do not provide the selectivity required to purify these organics

Method used

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  • Garbage treatment method and equipment using vibration screening
  • Garbage treatment method and equipment using vibration screening
  • Garbage treatment method and equipment using vibration screening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] figure 1 It is to allow the invention to be understood in its relevant context. On the upper left you can see the line entry where the garbage to be processed is entered. After the "primary sieve" called "main sieve", the fine fraction less than 450mm passes through the pre-fermentation rotary tube and then the trommel where the finer fraction less than 80mm is recovered and pass through a second trommel where the finest fractions with a particle size of less than 20 mm are recovered in order to pass through a sieve, the sieve according to the invention, which allows the very fine fraction with a particle size of less than 5 mm A fine first fraction is separated from a second fraction with a particle size between 5 mm and 20 mm.

[0046] Subsequently, the first part passes through a mechanically agitated horizontal digester and is at least partially recirculated through a mixing hopper.

[0047] It is during this digestion stage that the biogas is extracted. The dig...

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PUM

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Abstract

Process for treating waste, in particular municipal waste, containing organic matter mixed with undesirables, especially metals, mineral materials, plastics, glass, according to which process: - the waste is subjected to a first sorting by screening, - the fraction of waste passing through the screening is subjected to a pre-fermentation treatment in a rotating tube with supply at one end and extraction at the other end, - at least one portion of the material exiting the pre-fermentation treatment tube is subjected to a methanization treatment in a digester, the waste, without prior grinding, being subjected to sorting by screening through a screen comprising a grid (2) located in a plane inclined by an angle α with respect to the horizontal, the grid (2) being subjected to vibrations in a transverse direction substantially orthogonal to the direction of flow of the waste on top of the inclined screen.

Description

technical field [0001] The present invention relates to a method for the treatment of waste, in particular domestic waste, which contains organic matter mixed with unwanted substances, especially metals, inorganic substances, plastics, glass, according to which method : [0002] - Garbage is first sorted by sieving, [0003] - The sieved part of the garbage is subjected to pre-fermentation treatment in the rotating tube, wherein the material is supplied at one end of the rotating tube and discharged at the other end, [0004] - At least a portion of the material leaving the pre-fermentation tube is methanated in the digester. Background technique [0005] Household waste from non-selective recycling contains different categories of materials such as perishable waste (food waste, glass waste), paper, cardboard, glass, plastics, ferrous or non-ferrous metals, textiles, sanitary textiles, toxic items (batteries, paint bucket). [0006] The methanation and composting of thes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/06B07B13/11B07B1/34B07B1/52C05F9/02B07B1/46
CPCB03B9/06C05F17/50C05F17/957C05F17/964C12M21/04C12M45/04Y02E50/30Y02P20/145Y02W30/40Y02W30/62
Inventor A·索曼
Owner SUEZ ENVIRONNEMENT