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Material pretreatment device for aerobic composting and biological drying of solid waste and material pretreatment method

A technology of solid waste and pretreatment device, applied in biological organic part treatment, fertilization device, organic fertilizer and other directions, can solve the problems of adding conditioner, uneven mixing of materials, etc., to reduce the volatilization of ammonia gas, reduce ammonia gas Release and enhance the effect of biological nitrification

Active Publication Date: 2016-01-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that a large amount of conditioner needs to be added due to uneven material mixing in the existing composting and biological drying pretreatment process, and provides a material pretreatment device for solid waste aerobic composting and biological drying and material pretreatment methods

Method used

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  • Material pretreatment device for aerobic composting and biological drying of solid waste and material pretreatment method

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine figure 1 To illustrate this embodiment, the material pretreatment device for aerobic composting and biological drying of solid waste in this embodiment includes a press machine 1 and a mixer 2. Connected with the mixer 2, the top of the press 1 is provided with a feed inlet 4 of the press, the left end of the top of the mixer 2 is provided with a first inlet 3, and the inside of the mixer 2 is provided with a spiral stirring knife 5, The bottom of the mixer 2 is provided with a discharge port 6 .

specific Embodiment approach 2

[0018] Specific implementation mode two: the material pretreatment method of solid waste aerobic composting and biological drying in this implementation mode is carried out according to the following steps:

[0019] 1. Put the organic solid waste with a moisture content of ≤70% after drying, mechanical pressure filtration, biological drying, aerobic composting or without any treatment into the mixer 2 through the first feeding port 3 for crushing. When the average particle diameter is below 3cm, it is material 2;

[0020] Two, then put the organic solid waste with a moisture content ≥ 50% into the press machine 1 through the feed port 4 of the press machine, and press it into strips with a diameter of 0.1 to 2 cm or granules with a particle size of 0.1 to 2 cm. for material one;

[0021] 3. Material 1 is added to material 2 of mixer 2 at a uniform speed by feeder 1, and the mixed material of material 1 and material 2 is stirred and mixed by mixer 2 during the addition process...

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 2 in that: in step 1, the particles are crushed until the average diameter of the particles is 2 cm. Others are the same as in the second embodiment.

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Abstract

The invention discloses a material pretreatment device for aerobic composting and biological drying of solid waste and a material pretreatment method, relates to a material pretreatment device and method and aims to solve the problems that a large quantity of conditioners are required to be added due to non-uniform mixing of materials in the conventional composting and biological drying pretreatment process. The device comprises a press machine, a pulverizer and a stirring machine. The method comprises steps as follows: 1), organic solid waste with the water content smaller than or equal to 70% is smashed after biological drying or aerobic composting, and a material II is obtained and is put in the stirring machine; 2), the organic solid waste with the water content larger than or equal to 50% is put in the press machine to be pressed to form a material I; 3), the material I is added to the material II at a constant speed, the mixture is stirred and mixed, and a mixed material III with the water content lower than 70% is formed; 4), the mixed material III is directly subjected to follow-up biological drying or aerobic composting treatment. According to the method, a conditioner is not required to be added, and the aerobic composting and biological drying time can be shortened. The material pretreatment device and method are used for treating the solid waste.

Description

technical field [0001] The invention relates to a material pretreatment device and method. Background technique [0002] The aerobic composting process refers to the mixing of organic solid waste and conditioner to form a material pile of a certain volume. Under aerobic conditions, a large number of microorganisms are used to rapidly degrade the organic matter and biological residues in the material to generate carbon dioxide, water, and biological heat. , And form organic fertilizer products rich in humus. Bio-drying is a drying treatment process that utilizes the biothermal energy generated by microorganisms to degrade organic matter during the composting process, and promotes water evaporation through process control methods, thereby achieving rapid water removal. [0003] In order to improve the oxygen mass transfer effect inside the compost, it is necessary to add a large amount of conditioner or leavening agent in the process of composting and biological drying to inc...

Claims

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Application Information

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IPC IPC(8): C05F17/02C05F17/00
CPCY02W30/40
Inventor 王科王哲
Owner HARBIN INST OF TECH
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