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Dual channel device for treating aqueous discharge plasma

A discharge plasma and water treatment device technology, applied in the field of wastewater treatment, can solve the problems of limited oxidation capacity and selectivity, unsafe storage and use of reagents, complex equipment, etc.

Inactive Publication Date: 2009-10-21
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of method has the following disadvantages: OH oxidation capacity and selectivity are limited, water temperature, turbidity, pH, CO 3 2- It interferes with the reaction with suspended solids, and the processing cost is high, and there are unsafe and secondary pollution problems in the storage and use of reagents
Therefore, the equipment is complex and the electrodes need to be in direct contact with water mist, which is easily corroded, affects the life of the electrodes, and will cause secondary pollution of the water body

Method used

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  • Dual channel device for treating aqueous discharge plasma
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Examples

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experiment example 1

[0021] The dual-channel discharge plasma water treatment device uses a pair of electrodes, which are thoriated tungsten alloys, with a diameter of 1mm and sharpened tips. The insulating sleeve can be polytetrafluoroethylene, with a diameter of 3mm and a thickness of 1mm. The electrodes are installed inside the insulating sleeve. The distance between the discharge ends of the electrodes is 40mm, and the flame-retardant, heat-resistant and non-deformable insulation board is made of cement asbestos board with a thickness of 10mm. The distance between the discharge end and the water surface is 0.5mm. The power supply adopts a flux leakage transformer, the input AC voltage is 220V, the output AC no-load voltage is 15kV, and the output power is 20-30W. The simulated wastewater to be treated is a methyl violet solution with a concentration of 100 mg / L and a volume of 100 ml, which is treated statically in a water tank. The results are shown in Table 1.

[0022] Table 1

[0023] ...

experiment example 2

[0025] The dual-channel discharge plasma water treatment device adopts two pairs of electrodes, the two pairs of electrodes are arranged in parallel with a distance of 50mm, and the two do not affect each other; the distance between the discharge end and the water surface is 8mm. The power supply adopts a magnetic flux leakage transformer, the input AC voltage is 220V, the output AC no-load voltage is 15-18kV, and the total output power is 60-75W, which are provided to two pairs of electrodes respectively in two circuits. The simulated waste water to be treated is an acid purple solution with a concentration volume of 40 ml, which is treated statically in a water tank. The results are shown in Table 2.

[0026] Table 2

[0027] Pollutants

[0028] Experimental example 1 and experimental example 2 illustrate that the dual-channel discharge plasma water treatment device of the present invention can generate plasma to treat water; Secondary pollution.

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Abstract

The invention discloses a dual channel device for treating aqueous discharge plasma, relating to the field of wastewater treatment. The device comprises a leakage transformer, a sink and an insulation board arranged above the sink, one pair or more of electrodes are arranged on the insulation board, the horizontal distance between the discharging ends of each pair of electrodes is at least five times of the vertical distance between the discharging ends and the water surface, the high voltage output end of the leakage transformer is connected with each pair of electrodes, the water body below each pair of electrodes is a medium conductor, and the plasma is generated between the electrodes and the water surface.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a dual-channel discharge plasma water treatment device. Background technique [0002] The treatment of refractory toxic and harmful organic wastewater is a difficult point in environmental engineering. Advanced Oxidation Technology (AOPs) is a new water treatment technology emerging in the past 20 years. The characteristic of this type of technology is to oxidize and remove pollutants by stimulating the generation of hydroxyl radicals (·OH) in water. Such as the Fenton method, its typical reaction: [0003] Fe 2+ +H 2 o 2 → Fe 3+ +OH - + OH; Fe 3+ +H 2 o 2 → Fe 2+ +HO 2 +H + . [0004] The organic pollutants are oxidized and degraded through the strong oxidation ability of OH to achieve the purpose of degrading sewage. However, this type of method has the following disadvantages: OH oxidation capacity and selectivity are limited, water temperature, turbidity, pH,...

Claims

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Application Information

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IPC IPC(8): C02F1/46
Inventor 陈杰瑢陆镝莱
Owner XI AN JIAOTONG UNIV
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