Odor self-purification multilayer tower type aerobic composting reactor

An aerobic composting and reactor technology, which is applied in the application, organic fertilizer, fertilization device and other directions, can solve the problems such as the overall occupation of the process, the increase in the production cost of organic fertilizer, and the emission of ammonia-containing odor.

Inactive Publication Date: 2021-02-05
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of a large amount of ammonia-containing odor emissions, the existing main composting technologies such as the traditional stacking and trough aerobic composting processes

Method used

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  • Odor self-purification multilayer tower type aerobic composting reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The above-mentioned device is used to carry out aerobic composting treatment on the fungus residue. Mix the fungus residue, sawdust and fungus chaff according to the wet weight ratio of 4:4:2, and add the compound bacterial agent (dosing amount is 0.5% of the dry weight of the mixed material), to obtain a C / N ratio of 20:1~30: 1 of the compost material and pour it into the feed bin, the composting time is 48 days.

[0027] The above-mentioned device has 4 layers in total. The ratio of the headspace volume of the high-temperature fermentation bin layer, that is, the tank body 4 of the first layer, to the total headspace volume of the decomposing deodorization bin layer, that is, the second, third, and fourth layers, is 1:4. The feed box 1 lifts the stacked material along the lifting slide rail 3 and pours it into the first layer of tank body 4 . According to the moisture content information collected by the humidity sensor 17, the central control system adjusts the mois...

Embodiment 2

[0032] The odor self-purifying multi-layer tower type aerobic composting reactor is applied to the treatment of food waste. Food waste and fillers are put into the feeding box, and the stepping motor drives the feeding box along the sliding rail to pass the material through the feeding box. The material door is poured into the first layer of tanks for high-temperature fermentation. At the same time, the second, third, and fourth layers of tanks are filled with materials in the decomposing stage. In the first layer of tanks, when the oxygen sensor shows that the concentration is 10-15%, stop the aeration; Aeration; when the concentration reaches 15%, stop the aeration, and at this time the gas in the fourth layer tank will be discharged from the fourth layer exhaust port.

[0033] The heating belt in the first tank body maintains the material at 55°C to 65°C for more than 5 days. When the temperature sensor shows that the temperature drops below 55°C, turn on the heating belt ...

Embodiment 3

[0039] This embodiment is a further improvement of Example 2, the main improvements are:

[0040] (1) In embodiment 2, an oxygen sensor and an aeration system can be installed in the tank body of the fourth layer to detect the oxygen concentration. gas effect.

[0041] (2) In embodiment 2, in order to ensure that the odor is fully reacted in the circulation, fans can be installed in each pipeline to increase the gas circulation speed. The four to one layer pipelines are canceled, the four to two layer pipelines are set, and the exhaust branches are arranged in the four to two layer pipelines. When the first floor is not aerated, the first to second floor pipelines are closed, the fourth to second floor pipelines lead to the second floor, and the gas circulates between the second, third and fourth floors. When the first layer is aerated, the first to second layer pipes are opened, and the fourth to second layer pipes discharge the gas, so that the original fourth layer of gas...

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Abstract

The invention provides an odor self-purification multilayer tower type aerobic composting reactor, and belongs to the technical field of environmental protection equipment. The odor self-purificationmultilayer tower type aerobic composting reactor comprises a multi-layer tank body, a feeding and discharging device, an aeration device, a stirring device, a spraying device, a gas circulation pipeline and a central control system, the multi-layer tank body is a reactor main body, is divided into a high-temperature fermentation bin layer and a decomposition deodorization bin layer and is communicated with each layer of tank body through the gas circulation pipeline, and temperature, humidity, oxygen and odor concentration sensors are arranged in the multi-layer tank body; and after a centralcontrol system receives collected composting information, composting conditions are adjusted through all the devices, the reactor sets an organic waste high-temperature fermentation stage and a decomposition stage in different bin layers, ammonia-containing odor generated by high-temperature fermentation is sequentially introduced into different decomposition deodorization bin layers by designingthe material filling rate and the gas circulation pipeline of the reactor, on the premise of meeting the material oxygen consumption rate, the gas retention time is prolonged, and theodor self-purification multilayer tower type aerobic composting reactor has the characteristics of low operation cost, high oxygen utilization rate, self-purification of compost ammonia-containing odor and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to an odor self-purifying multi-layer tower type aerobic composting reactor. Background technique [0002] In recent years, the total amount of solid waste generated in my country, such as municipal solid waste, industrial solid waste, agricultural waste and green waste, has been increasing day by day, and its sustainable management has become one of the major challenges facing society today. Among them, organic waste, such as kitchen waste, green waste, sewage sludge, livestock and poultry manure, etc., accounted for up to 46% of the total solid waste. Compared with landfilling and incineration of solid waste, which will lead to waste of resources and environmental pollution, composting, as a technology that can convert waste into resources, is suggested to be widely used in the disposal of various organic solid wastes. [0003] Composting is to mix orga...

Claims

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Application Information

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IPC IPC(8): C05F17/90C05F17/979C05F17/993C05F17/964C05F17/986
CPCC05F17/90C05F17/964C05F17/979C05F17/986C05F17/993Y02W30/40
Inventor 吴川福谢栋杨民徐明月孟洁惠里周高明汪群慧
Owner UNIV OF SCI & TECH BEIJING
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