Micro-plasma arc discharge catalyzed water treatment method utilizing alternating-current power source

A technology of micro-plasma and AC power supply, applied in the direction of electrochemical water/sewage treatment, etc., can solve the problems of small reaction area, fast anode corrosion, and low efficiency, and achieve the effects of alleviating electrode corrosion, easy access, and low energy consumption

Inactive Publication Date: 2015-06-17
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the reaction area of ​​this water treatment technology

Method used

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  • Micro-plasma arc discharge catalyzed water treatment method utilizing alternating-current power source

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Effect test

Embodiment 1

[0051] A method for treating water with micro-plasma arc discharge catalyzed by AC power supply has the following steps:

[0052] 1) Add additives to the liquid to be treated 1;

[0053] 2) Turn on the ventilation system and magnetic stirring system 6;

[0054] 3) Insert electrode I2 and electrode II3 into the reaction cell 4;

[0055] 4) Add the liquid to be treated 1 containing additives into the reaction tank 4;

[0056] 5) Switch on the power supply between the electrode I2 and the electrode II3, and gradually increase the voltage so that the power supply discharges stably under the parameters of the power supply;

[0057] 6) Analyze the water treatment effect: take regular samples to test the water quality change of the liquid to be treated 1, calculate the treatment time in advance, and combine the test results to determine the end of the treatment;

[0058] 7) End of water treatment: After gradually reducing the power supply voltage to 10-20V, turn off the power supply, the magneti...

Embodiment 2

[0069] A method for treating water with micro-plasma arc discharge catalyzed by AC power supply has the following steps:

[0070] 1) Add additives to the liquid to be treated 1;

[0071] 2) Turn on the ventilation system and magnetic stirring system 6;

[0072] 3) Insert electrode I2 and electrode II3 into the reaction cell 4;

[0073] 4) Add the liquid to be treated 1 containing additives into the reaction tank 4;

[0074] 5) Switch on the power supply between the electrode I2 and the electrode II3, and gradually increase the voltage so that the power supply discharges stably under the parameters of the power supply;

[0075] 6) Analyze the water treatment effect: take regular samples to test the water quality change of the liquid to be treated 1, calculate the treatment time in advance, and combine the test results to determine the end of the treatment;

[0076] 7) End of water treatment: After gradually reducing the power supply voltage to 10-20V, turn off the power supply, the magneti...

Embodiment 3

[0086] A method for treating water with micro-plasma arc discharge catalyzed by AC power supply has the following steps:

[0087] 1) Add additives to the liquid to be treated 1;

[0088] 2) Turn on the ventilation system and magnetic stirring system 6;

[0089] 3) Insert electrode I2 and electrode II3 into the reaction cell 4;

[0090] 4) Add the liquid to be treated 1 containing additives into the reaction tank 4;

[0091] 5) Switch on the power supply between the electrode I2 and the electrode II3, and gradually increase the voltage so that the power supply discharges stably under the parameters of the power supply;

[0092] 6) Analyze the water treatment effect: take regular samples to test the water quality change of the liquid to be treated 1, calculate the treatment time in advance, and combine the test results to determine the end of the treatment;

[0093] 7) End of water treatment: After gradually reducing the power supply voltage to 10-20V, turn off the power supply, the magneti...

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Abstract

The invention discloses a micro-plasma arc discharge catalyzed water treatment method utilizing an alternating-current power source. The method comprises the following steps: adding a 0.5-50g/L additive to a to-be-treated liquid; turning on a ventilation system and a magnetic stirring system; inserting an electrode I and an electrode II into a reaction tank; adding the to-be-treated liquid containing the additive to the reaction tank; switching on an alternating current power source between the electrode I and the electrode II, and gradually increasing the voltage so that the power source can discharge stably under the parameters of the power source; and analyzing the water treatment effect and finishing the water treatment. According to the method, the micro-plasma arc discharge catalyzed water treatment technique under the alternating-current power source is adopted, and then the two electrodes are enabled to generate liquid-phase micro-arc discharge alternately and the water treatment region can be increased. In addition, the alternating of the positive and negative voltages generates appropriate stop and passivation to the discharge electrodes, so that the electrode corrosion also can be relieved, and a film structure more advantageous for discharge-catalysis is formed; besides, the alternating-current power source is simpler and easier to obtain in comparison with a unipolar pulsed power source, and is lower in energy consumption.

Description

Technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, and relates to a liquid-phase plasma discharge catalytic water treatment method. Background technique [0002] Under the action of an electric field, the plasma produced by the liquid phase discharge process contains a large number of high-energy active particles, which have a destructive effect on many molecules. The combination of these high-energy active particles and the catalyst can effectively improve the discharge treatment effect and promote the decomposition of organic molecules, thus becoming a hot spot in the research and development of pollution treatment technology. [0003] Micro-arc discharge, the "plasma-catalysis" mode with titanium as the anode, is combined with the titanium dioxide generated in situ by the electrode to form a naturally integrated discharge catalysis coordination system. This method combines the plasma and the catalyst to give full pl...

Claims

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Application Information

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IPC IPC(8): C02F1/46
Inventor 严志宇王鑫门漫婷孙冰王巧敏文密
Owner DALIAN MARITIME UNIVERSITY
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