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Monitoring reactor and use method thereof

A technology of reactor and outsourcing steel, which is applied in the direction of biochemical equipment and methods, instruments, soil material testing, etc., and can solve the problems of lack of real-time monitoring of the health degree of petroleum hydrocarbon-contaminated soil

Active Publication Date: 2021-06-01
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, microbial electrochemical technology has achieved efficient degradation of petroleum hydrocarbon molecules in soil, but there is still a lack of real-time monitoring and stable operation of petroleum hydrocarbon-contaminated soil health.

Method used

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  • Monitoring reactor and use method thereof
  • Monitoring reactor and use method thereof
  • Monitoring reactor and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Build the monitoring reactor: firstly design an outer-wrapped steel mesh with an upper radius of 5.2cm, a lower radius of 2.5cm, and a height of 16cm (aperture 10 mesh, thickness 0.5cm) to protect the stability of the monitoring reactor in the soil, and then place the upper radius of 5cm , a biochar structure with a lower radius of 2.2 cm and a height of 15 cm (thickness is 2.0 cm) is placed inside the outer steel mesh, and titanium wires are embedded as electron collection wires. Finally, a hollow cylindrical steel mesh structure with a radius of 2 cm and a height of 14 cm (aperture diameter 10 mesh, 0.2cm) is placed in the center as a counter electrode, and a mixture of cross-linked sodium polyacrylate and soil particles is placed between the outsourcing steel mesh and the biochar structure, and between the biochar structure and the hollow cylindrical steel mesh structure, The mass ratio is 1:1;

[0031]A 0.2V DC power supply voltage is applied between the biochar str...

Embodiment 2

[0034] Build a monitoring reactor: the difference from Example 1 is that the mass ratio of cross-linked sodium polyacrylate to soil particles is 1:2.5; a 0.5V DC power supply voltage is applied between the biochar structure and the hollow cylinder steel mesh structure, and the obtained Current data such as Figure 4 As shown, the arrow before it is the change of the electrical signal generated when the microorganisms are enriched and a small amount of organic matter in the soil is consumed. The electrical signal reaches the maximum, indicating that the microbial enrichment is complete, and the electric potential is continued. When the electrical signal is lower than 0.01mA, the pretreatment complete.

[0035] Insert the pretreated monitoring reactor into soil contaminated with 50 mg / kg petroleum hydrocarbons, and indicate the molecular content of petroleum hydrocarbons in the soil through the fluctuation of electrical signals, such as Figure 4 The change of the electrical si...

Embodiment 3

[0037] The construction of the monitoring reactor: the difference from Example 1 is that the mass ratio of cross-linked sodium polyacrylate and soil particles is 1:5, and a 0.7V DC power supply voltage is applied between the biochar structure and the hollow cylinder steel mesh structure, The obtained current data are as Figure 5 As shown, the arrow before it is the change of the electrical signal generated when the microorganisms are enriched and a small amount of organic matter in the soil is consumed; the electrical signal reaches the maximum, indicating that the microbial enrichment is complete, and the electric potential is continued. When the electrical signal is lower than 0.01mA, the pretreatment complete.

[0038] Insert the pretreated monitoring reactor into soil contaminated with 200mg / kg petroleum hydrocarbons, and indicate the molecular content of petroleum hydrocarbons in the soil through the fluctuation of electrical signals, such as Figure 5 The change of the...

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Abstract

The invention provides a monitoring reactor and a use method thereof, and belongs to the technical field of microbial electrochemical early warning. Before the monitoring reactor is used, microorganisms in the monitoring reactor are enriched, organic matters are consumed, and when the organic matters in the monitoring reactor are completely consumed, namely the microorganisms are in a starvation state, the monitoring reactor is put into a system to be detected for detection; interference of organic matters in monitoring reactor soil on electric signals can be avoided, and the monitoring accuracy is improved; and electric signals in the monitoring reactor are transmitted through the electrogenesis bacteria, the electrogenesis process of the electrogenesis bacteria is the growth and reproduction process of microorganisms, and the process is slightly influenced by the monitoring environment, so that the signal output process is stable, and the situation that the electric signals suddenly rise and fall is avoided.

Description

technical field [0001] The invention relates to the technical field of microbial electrochemical early warning, in particular to a monitoring reactor and a use method thereof. Background technique [0002] The exploitation and utilization of oil fields have greatly improved the country's economic level, but it has also brought about serious oil pollution problems in the process of exploitation and transportation. The "Law of the People's Republic of China on the Prevention and Control of Soil Pollution" promulgated in 2018 also puts forward higher requirements for efficient and environmentally friendly restoration of oil-contaminated soil. As countries around the world continue to recognize the ecological toxicity and health risks caused by oil pollution, timely and rapid monitoring of leaked petroleum hydrocarbons can greatly reduce the workload of remediation, thereby reducing soil pollution. [0003] At present, monitoring the microbial respiration process is the most co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
CPCG01N27/3277G01N33/24C12Q1/02G01N27/327B09C1/10
Inventor 李田周启星
Owner NANKAI UNIV