A low-temperature plasma wastewater treatment device and its treatment method

A technology of low-temperature plasma and low-temperature plasma, which is applied in the field of plasma wastewater treatment devices, can solve the problems of high discharge of wastewater treatment standards, increase of treatment processes and facilities, and inability to increase treatment facilities, etc., to achieve the reduction of emission concentration and low replacement cost Effect

Active Publication Date: 2011-12-07
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]First of all, with the improvement and progress of technology, the degree of recycling of industrial wastewater is high, and the discharge concentration is also gradually increasing, which brings higher standards for wastewater treatment and discharge. difficulty
[0003] Secondly, the emission standards are also improving with the improvement of people's environmental protection requirements. For example, the emission standards of the beer industry will increase from 150mg / l to 90mg / l in the emission standards of the beer industry on July 1, 2011. The standard is raised to Grade B, and some places even require it to be raised to Grade A, which brings difficulties to some sewage treatment plants. Generally, it is necessary to add new treatment processes and facilities, which greatly increases cost input, and even some older sewage treatment plants The factory is limited by the site and other issues, even if the investment is increased, the treatment facilities cannot be increased

Method used

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  • A low-temperature plasma wastewater treatment device and its treatment method
  • A low-temperature plasma wastewater treatment device and its treatment method
  • A low-temperature plasma wastewater treatment device and its treatment method

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0026] Wastewater before UV treatment that flows into the reaction tank into the urban sewage treatment plant 1# that implements the first-level B discharge standard.

[0027] Adjust the discharge parameters of the dielectric barrier discharge low-temperature plasma discharge device as follows: the working gas is air at normal pressure, and the discharge power is 5.0W cm -2 , The discharge distance is 1.0 ~ 10.0cm, the water is discharged continuously, and the water sample is taken after 5 minutes to measure the water quality of the discharged water.

[0028] Inlet and outlet water quality comparison table of reaction tank:

[0029]

[0030] Among them, the measuring method of chromaticity adopts GB11903-89 dilution multiple method to measure, and the measuring method of Escherichia coli adopts the analytical method in "Water and Wastewater Monitoring and Analyzing Methods (Third and Fourth Edition)" of China Environmental Science Press. The measuring method adopts GB11901...

experiment example 2

[0032] Wastewater before UV treatment that flows into the reaction tank into 2# of urban sewage treatment plant that implements the first-level B discharge standard.

[0033] Adjust the discharge parameters of the dielectric barrier discharge low-temperature plasma discharge device as follows: the working gas is air at normal pressure, and the discharge power is 2.5W cm -2 , the discharge distance is 1.0-10.0cm, the water is discharged continuously, and the water quality of the discharged water is measured after 5 minutes.

[0034] Inlet and outlet water quality comparison table of reaction tank:

[0035]

[0036] Experimental example 1-2 shows that after the treatment, the number of coliform bacteria is basically not detected, and the disinfection and sterilization effect is obvious. It can completely replace the traditional ultraviolet disinfection pool, and the inflow and outflow of chroma, SS, COD, ammonia nitrogen, petroleum, etc. The comparison results show that the ...

experiment example 3

[0038] The reaction tank flows into the urban sewage treatment plant 1# to implement the first-level B discharge standard wastewater.

[0039] Adjust the discharge parameters of the dielectric barrier discharge low-temperature plasma discharge device as follows: the working gas is air at normal pressure, and the discharge power is 5.0W cm -2 , The discharge distance is 1.0 ~ 10.0cm, the water is discharged continuously, and the water sample is taken after 5 minutes to measure the water quality of the discharged water.

[0040] Inlet and outlet water quality comparison table of reaction tank:

[0041]

[0042]

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Abstract

The invention discloses a low-temperature plasma waste water treatment device and method. The method comprises the following steps of: draining waste water into a reaction groove and putting into a low-temperature plasma environment, wherein the low-temperature plasma environment is provided by using a dielectric barrier discharge low-temperature plasma device; and arranging the discharging anodeof the dielectric barrier discharge low-temperature plasma device at a position 1.0-10.0 centimeters away from a waste water level plane, charging waste water at the power/cm<2> 1.0-5.0 watts, and treating the waste water for at least more than 5 minutes. Waste water is treated at the depth of 5.0-10.0 centimeters, so that the discharging concentration of pollutants containing waste water is further lowered, and the discharging standard is increased; and the waste water treatment device has low replacement cost, and is suitable for large-scale investment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a low-temperature plasma wastewater treatment device and a method thereof. Background technique [0002] First of all, with the improvement and advancement of technology, the degree of recycling of industrial wastewater is high, and the discharge concentration is gradually increasing, which brings more difficulty to the discharge of wastewater treatment standards. [0003] Secondly, the emission standards are also improving with the improvement of people's environmental protection requirements. For example, the emission standards of the beer industry will increase from 150mg / l to 90mg / l in the emission standards of the beer industry on July 1, 2011. The standard is raised to Grade B, and some places even require it to be raised to Grade A, which brings difficulties to some sewage treatment plants. Generally, it is necessary to add new treatment processes and facilities, which grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30
Inventor 郑展望陈纯马仕聪许慧文
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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