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An organic solid waste composting device with double-layer material circulation and ventilation and a composting method using the device

A technology of organic solids and material circulation, which is applied in the preparation of organic fertilizers, organic fertilizers, fertilization devices, etc., can solve the problems of low secondary fermentation efficiency, long composting cycle, and large floor area, so as to improve the efficiency of secondary fermentation , Increase nitrogen content, reduce the effect of odor load

Active Publication Date: 2018-03-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of long composting period, odor pollution, low secondary fermentation efficiency, high energy consumption and large floor area of ​​the above-mentioned film-covered compost, and provide a double-layer material circulation and ventilation organic Solid waste composting device and composting method using the same

Method used

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  • An organic solid waste composting device with double-layer material circulation and ventilation and a composting method using the device

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine figure 1 As shown, the organic solid waste composting device with double-layer material circulation and ventilation in this embodiment includes a fermentation bin door 1, a fermentation bin 3, a fermentation bin cover 2, an annular perforated aeration pipe 8, a secondary fermentation tank 4, and a blower 5. Air intake valve 6, exhaust gas circulation valve 7, exhaust gas collection port 9, exhaust gas circulation pipe 10, temperature and oxygen concentration probe 11; a ring-shaped perforated aeration pipe 8 is arranged at the bottom of the fermentation chamber, and the exhaust gas circulation pipe 10 passes through the blower 5 Tail gas circulation valve 7 controls, secondary fermentation tank 4 is set in the middle of the fermentation bin, the secondary fermentation tank 4 adopts a porous plate or a screen, the temperature and oxygen concentration probe 11 is set under the secondary fermentation tank 4, and the top of the ferme...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment is different from Embodiment 1 in that the side wall of the fermentation bin 3 is made of cement or metal plates. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0025] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that the depth of the secondary fermentation tank 4 is 30-300 cm. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a double-layered material circulating ventilation organic solid waste composting device and a method for composting by using the device, and relates to a composting device and a method for composting by using the device. Problems that a film covering type composting period is long, bad smell pollution is heavy, secondary fermentation efficiency is low, energy consumption is high and occupied area is large are solved. The device comprises a fermentation bin door, a fermentation bin, a fermentation bin cover, an annular perforated aerator pipe, a secondary fermentation groove, an air blower, an air feeding valve, a tail gas circulating valve, a tail gas collecting opening, a tail gas circulating pipe and a temperature and oxygen concentration probe. The method comprises the following steps of (1) placing materials; (2) performing tail gas circular fermentation; (3) feeding fresh air to ferment; and (4) taking out the materials from a secondary fermentation groove, taking out fermenting wastes, performing secondary fermentation on the fermenting wastes, and adding fresh wastes to perform next fermentation. By the method for composting, an odor adsorption effect is improved, the secondary fermentation efficiency is improved, a fermentation period is shortened and only lasts for 20-30 days, and occupied area is reduced.

Description

technical field [0001] The invention relates to a composting device and a composting method using the device. Background technique [0002] Aerobic composting treatment means that solid waste and conditioner are fully mixed 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, generate carbon dioxide and water, and release A large number of thermal biochemical processes. During the aerobic composting process, a large amount of ammonia, hydrogen sulfide and other odors will be produced, which will cause serious air pollution if not treated. Membrane-covered composting is to cover the material pile with expanded polytetrafluoroethylene film to reduce the escape of odor, thereby saving the odor treatment unit. However, the existing membrane-covered composting process mainly has the following main problems: [0003] 1. Slow water volatilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 王科王哲
Owner HARBIN INST OF TECH
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