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Low-temperature plasma collaborative Fenton biomembrane reaction device and implementation method thereof

A low-temperature plasma and reaction device technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Complex post-processing problems, to achieve good environmental benefits, speed up the film hanging speed, improve the effect of COD removal rate

Inactive Publication Date: 2013-11-27
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Wastewater from chemical, textile and other industries contains a large amount of refractory organic matter, and the treatment capacity of individual plasma and Fenton technologies is limited, and for ordinary homogeneous Fenton systems, a large amount of iron-containing sludge will be generated after the reaction, post-treatment complex
cause secondary pollution
Lack of a technology that can load iron ions on the carrier so that it does not produce secondary pollution
In addition, hydrogen peroxide produced by contacting glow discharge plasma technology to degrade phenol and benzoic acid wastewater has not been effectively utilized

Method used

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  • Low-temperature plasma collaborative Fenton biomembrane reaction device and implementation method thereof
  • Low-temperature plasma collaborative Fenton biomembrane reaction device and implementation method thereof
  • Low-temperature plasma collaborative Fenton biomembrane reaction device and implementation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) The activated sludge attached to the carrier was treated with low-temperature plasma Ar, and then placed in Fe(OH) 3 Formation of deposited iron in colloidal suspension;

[0041] (2) Adjust the glow current and maintain the power at 60W. Make microbial extracellular polysaccharides attach to the surface of the carrier and multiply to form a biofilm;

[0042] (3) Adjust the glow voltage to 620V, and pass the phenol simulated wastewater into the low-temperature plasma cooperative Fenton-like biofilm reaction device through the water pump;

[0043] (4) Use contact glow discharge plasma technology to degrade, and record the concentration change of hydrogen peroxide;

[0044] (5) With the degradation of pollutants, the concentration of hydrogen peroxide gradually increases. When the concentration of hydrogen peroxide reaches 2mmol / L, the pH of the wastewater is controlled to be 4;

[0045] (6) The glow voltage is 550V, and the number of anode electrodes is 2, which ar...

Embodiment 2

[0048] With other conditions unchanged, the hydrogen peroxide concentration of 2 mmol / L in step (5) in Example 1 was changed to 3 mmol / L.

Embodiment 3

[0050] With other conditions unchanged, the hydrogen peroxide concentration of 2 mmol / L in step (5) in Example 1 was changed to the hydrogen peroxide concentration of 4 mmol / L.

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Abstract

The invention relates to equipment for treating refractory wastewater, and in particular relates to a reaction device with Fenton treatment on biomembrane deposited iron and a recovered hydrogen peroxide solution in combination with plasma and microbe actions, and an implementation method of the reaction device. The reaction device comprises a contact glow multi-electrode plasma reactor, a hydrogen peroxide content control system and a deposited iron biomembrane reaction tank. The implementation method comprises three stages, wherein the first stage is a biomembrane forming stage, the second stage is a hydrogen peroxide generation stage (primary treatment stage), and the third stage is a pollutant collaborative degradation stage. According to the reaction device and the implementation method, the hydrogen peroxide generated by the primary treatment is recycled, so that the hydrogen peroxide is unlikely to pollute the environment and cause harm to human health while the economical benefit is improved. Moreover, a carrier surface treated by plasmas generates a lot of polar functional groups to ensure that the hydrophilic property of the carrier surface is generally improved.

Description

technical field [0001] The invention relates to a kind of refractory wastewater treatment equipment, in particular to a reaction device and an implementation method of biofilm deposition of iron and recovery of hydrogen peroxide solution Fenton treatment combined with plasma and microbial action. Background technique [0002] Wastewater from chemical, textile and other industries contains a large amount of refractory organic matter, and the treatment capacity of individual plasma and Fenton technologies is limited, and for ordinary homogeneous Fenton systems, a large amount of iron-containing sludge will be generated after the reaction, post-treatment complex. cause secondary pollution. There is a lack of a technology that can load iron ions on a carrier so that it does not produce secondary pollution. In addition, the hydrogen peroxide produced by contacting glow discharge plasma technology to degrade phenol and benzoic acid wastewater has not been effectively utilized. ...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 沈拥军江国庆朱鹏施佳鸣丁建东曹宇锋张彦
Owner NANTONG UNIVERSITY
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