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Agriculture waste cyclic utilization system

A technology of agricultural waste and subsystems, applied in the field of agricultural waste recycling system, can solve the problems of ineffective utilization, time-consuming, and large land occupation, and achieve the effects of efficient recycling, high resource utilization rate, and convenient transportation

Inactive Publication Date: 2017-12-15
浙江一海新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main treatment method of animal manure is composting and fermentation, which is used as organic fertilizer. However, the composting process not only takes a long time, takes up a lot of land, but also tends to produce unpleasant odors, and its resource utilization rate is not high
The use of animal manure as biogas raw material for fermentation has begun. However, it uses conventional biogas fermentation methods and its main purpose is to obtain biogas. It has not effectively utilized biogas slurry and biogas sludge containing a large amount of resources, and its resource utilization is still to be determined. improve

Method used

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  • Agriculture waste cyclic utilization system

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Effect test

Embodiment 1

[0027] An agricultural waste recycling system, including anaerobic subsystem, biogas treatment subsystem, solid-liquid separation subsystem, biogas slurry concentration subsystem and aerobic composting subsystem, wherein,

[0028] The anaerobic subsystem uses the anaerobic fermentation of livestock and poultry manure to produce biogas, which includes an anaerobic reactor, which has a biogas outlet and a solid-liquid outlet; of course, as raw materials for biogas fermentation, in addition to livestock and poultry manure in agriculture, etc. , can also include organic agricultural waste such as crop stalks, fallen leaves of trees, etc. After these agricultural wastes are collected, biogas is produced through anaerobic fermentation of the anaerobic subsystem, and biogas residue and biogas slurry are produced.

[0029] The biogas treatment subsystem includes a gas separation and purification unit, which is connected to the biogas outlet of the anaerobic reactor to realize the puri...

Embodiment 2

[0035] An agricultural waste recycling system based on Example 1, the anaerobic subsystem also includes a hydrolysis tank and a primary anaerobic reactor, the hydrolysis tank is connected to the primary anaerobic reactor through a peristaltic pump, and the primary anaerobic reactor passes through a peristaltic The pump is connected to the anaerobic reactor; the primary anaerobic reactor has a biogas outlet, and the biogas outlet of the primary anaerobic reactor is connected to a gas separation and purification unit.

[0036] Among them, the total volume of materials in the anaerobic reactor is 40-50% of the total volume of materials in the primary anaerobic reactor. After the materials are fermented in the anaerobic reactor for 7-10 days, the materials are transported to the solid-liquid outlet through the solid-liquid outlet. Separation subsystem; then pump 40-50% of the material in the primary anaerobic reactor into the anaerobic reactor through a peristaltic pump; then pump ...

Embodiment 3

[0040] An agricultural waste recycling system based on embodiment 1 or 2, wherein the solid-liquid separation subsystem includes a settling tank and a dehydrator, and the feed inlet of the settling tank is connected with the solid-liquid outlet of the anaerobic reactor through a peristaltic pump, The upper end of the settling tank is provided with a biogas slurry outlet, and the lower end of the settling tank is provided with a middle biogas sludge outlet; the feed port of the dehydrator is connected to the biogas slurry outlet of the settling tank, which is provided with a biogas slurry outlet and a biogas residue outlet; the biogas slurry outlet of the settling tank and the dehydration The biogas slurry outlet of the dehydrator is connected with the biogas slurry concentration subsystem; the biogas residue outlet of the dehydrator is connected with the aerobic composting subsystem. In this way, biogas residue and biogas slurry can be separated efficiently, not only can fully ...

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Abstract

The invention provides an agriculture waste cyclic utilization system which comprises an anaerobic subsystem, a marsh gas treatment subsystem, a solid-liquid separation subsystem, a biogas fluid concentration subsystem and an aerobic composting subsystem, wherein the anaerobic subsystem comprises an anaerobic reactor; the anaerobic reactor is provided with a marsh gas outlet and a solid-liquid outlet; the marsh gas treatment subsystem comprises a gas separation and purification unit; the gas separation and purification unit is connected with the marsh gas outlet of the anaerobic reactor to realize purification of marsh gas and separation of methane from carbon dioxide; the methane and the carbon dioxide which are separated respectively enter a methane storage device and a carbon dioxide storage device; the solid-liquid separation subsystem is connected with the solid-liquid outlet of the anaerobic reactor to realize separation of biogas fluid from biogas residues; the biogas fluid and the biogas residues which are separated respectively enter the biogas fluid concentration subsystem and the aerobic composting subsystem. The cyclic utilization system can cyclically use agricultural wastes, and is high in resource utilization rate.

Description

technical field [0001] The invention relates to the technical field of agricultural waste recycling, in particular to an agricultural waste recycling system. Background technique [0002] In the field of agriculture, especially in the field of livestock, a large amount of waste is generated. In the field of animal husbandry, one of the important waste gas is animal manure. The main treatment method of animal manure is composting and fermentation, which is used as organic fertilizer. However, the composting process not only takes a long time, takes up a lot of land, but also tends to produce unpleasant odors, and its resource utilization rate is not high. The use of animal manure as biogas raw material for fermentation has begun. However, it uses conventional biogas fermentation methods and its main purpose is to obtain biogas. It has not effectively utilized biogas slurry and biogas sludge containing a large amount of resources, and its resource utilization is still to be d...

Claims

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Application Information

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IPC IPC(8): C02F11/04C10L3/10C05D7/00
CPCC02F11/04C05D7/00C10L3/101C10L3/104C10L2290/26Y02E50/30
Inventor 夏洲
Owner 浙江一海新能源科技有限公司
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