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Method and system for automatically measuring aerobic respiratory capacity of biodegradable material

A biodegradable material and respiration technology, applied in the field of automatic determination of aerobic respiration of biodegradable materials, can solve problems such as large differences and inability to copy, reduce test errors, high repeatability, and realize real-time online monitoring. Effect

Pending Publication Date: 2021-12-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current oxygen consumption meter is only suitable for water samples with good fluidity. The aerobic respiration of solid samples is tested in the inoculation method, sample pretreatment method, reoxygenation method, oxygen concentration control range and humidity maintenance. All aspects are quite different from liquid samples, and it is impossible to copy the test system of aerobic respiration of liquid samples

Method used

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  • Method and system for automatically measuring aerobic respiratory capacity of biodegradable material
  • Method and system for automatically measuring aerobic respiratory capacity of biodegradable material
  • Method and system for automatically measuring aerobic respiratory capacity of biodegradable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Take the compost produced by the kitchen waste mechanical composting reactor and record it as C1. Adjust the moisture content of the compost to 50%, inject 300 g of compost with the adjusted moisture content into the culture bottle, and place the culture bottle in an incubator at 20° C. for cultivation. Set the upper limit of oxygen concentration to 20.7%, and the lower limit of oxygen concentration to 18%. Start the PLC controller 5 to control the oxygen concentration and record data. Compost aerobic respiration test system such as figure 1 shown. After 96 hours of cultivation, the amount of oxygen consumed by the C1 reactor was 37.6mg-O 2 / g-dry basis, the cumulative oxygen consumption changes with time as figure 2 shown. Repeat the test twice by the same operation, the amount of oxygen consumed by the material in 96 hours is 37.9mg-O 2 / g-dry basis and 36.5mg-O 2 / g - dry basis. The test results are highly repeatable.

Embodiment 2

[0085] Take the compost produced by the sunshine composting house in rural areas, and record it as C2. Adjust the moisture content of the compost to 50%, inject 40 g of compost with the adjusted moisture content into the culture bottle, and place the culture bottle in an incubator at 20° C. for cultivation. Set the upper limit of oxygen concentration to 20.5%, and the lower limit of oxygen concentration to 18%. Start the PLC controller 5 to control the oxygen concentration and record data. Compost aerobic respiration test system such as figure 1 shown. After 96 hours of cultivation, the amount of oxygen consumed by the C2 reactor was 35.6 mg-O 2 / g-dry basis, the cumulative oxygen consumption changes with time as figure 2 shown.

Embodiment 3

[0087] Take the compost product that has undergone secondary fermentation and decompose, and record it as C3. Adjust the moisture content of the compost to 50%, inject 40 g of compost with the adjusted moisture content into the culture bottle, and place the culture bottle in an incubator at 20° C. for cultivation. Set the upper limit of oxygen concentration to 20.5%, and the lower limit of oxygen concentration to 18%. Start the PLC controller 5 to control the oxygen concentration and record data. Compost aerobic respiration test system such as figure 1 shown. After 96 hours of cultivation, the amount of oxygen consumed by the C3 reactor was 23.0mg-O 2 / g-dry basis, the cumulative oxygen consumption changes with time as figure 2 shown.

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Abstract

The invention relates to a method and a system for automatically measuring the aerobic respiratory capacity of a biodegradable material. The system comprises a culture device, a detection device, a ventilation device and a control device. The culture device is used for culturing a biodegradable material; the detection device is connected with the culture device through a gas detection circulating pipeline and is used for detecting the content of gas in the culture device; the ventilation device is connected with the culture device through a ventilation pipeline and used for replacing the gas in the culture device; and the control device is electrically connected with the detection device and the ventilation device and used for receiving an electric signal from the detection device and controlling starting and stopping of the ventilation device. Compared with the prior art, the method and the system have the advantages of adaptability to multi-source materials, stable and reliable test result, short test time, test result close to reality, low cost, environmental friendliness and the like, and can be applied to scenes such as evaluation of biological stability before final treatment or resource utilization of various biodegradable materials and treatment products thereof.

Description

technical field [0001] The invention belongs to the fields of environmental protection and resource comprehensive utilization, and in particular relates to a method and system for automatically measuring aerobic respiration of biodegradable materials. Background technique [0002] Biodegradable materials such as kitchen waste are usually treated with anaerobic digestion, aerobic fermentation or insect farming processes. On the one hand, the biological stability of biodegradable materials is an important index for evaluating the efficiency of biological treatment, and on the other hand, it is also an important index for the land use of biodegradable materials. Biostability refers to the degree to which a material can no longer be degraded by microorganisms in a specific environment and tends to be stable. In a certain period of time, the aerobic respiration of biodegradable materials can reflect its biological stability. In addition, the aerobic respiration of biodegradable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G05D11/13C12M1/34C12M1/36
CPCG01N33/0036G01N33/004G05D11/138C12M41/34C12M41/48
Inventor 彭伟何品晶吕凡章骅邵立明
Owner TONGJI UNIV
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