Method and apparatus for purifying waste water by using discharge plasma

A discharge plasma and wastewater technology, applied in chemical instruments and methods, electrochemical water/sewage treatment, special compound water treatment, etc., can solve problems that endanger human health, affect the ecological and social environment, and achieve the promotion of degradation and removal High efficiency, the effect of improving energy utilization efficiency

Inactive Publication Date: 2017-02-15
黄华丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during this treatment process, volatile harmful substances in wastewater, especially malodorous gases, such as various organic substances such as toluene, formaldehyde, methanol, sulfide and amines, and inorganic substances such as hydrogen sulfide and ammonia, enter the atmosphere through volatilization , thus seriously affecting the ecological and social environment and endangering human health

Method used

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  • Method and apparatus for purifying waste water by using discharge plasma
  • Method and apparatus for purifying waste water by using discharge plasma
  • Method and apparatus for purifying waste water by using discharge plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: a kind of device of discharge plasma purifying waste water according to the present invention is as figure 1 shown. The device is cylindrical, the material of the cylinder is PP, the external dimensions are Φ150mm×1200mm, and it is placed vertically. electrode as figure 2 The disc-shaped mesh electrode, the electrode material is 316L stainless steel, punched and formed, the mesh is rectangular, the electrode size is Φ140mm×2mm, the single hole size is 10mm×10mm, the distance between the electrodes is about 15mm, a total of 12 groups. The electrode power supply mode is AC, the AC voltage is about 6kV, the AC frequency is about 50Hz, and the power supply is about 100W.

[0016] The treatment process is as follows: the reaction gas is introduced into the gas-liquid contact discharge plasma area of ​​the device through the gas inlet 1 through the gas distributor 2, and the positive electrode 7 of the alternating positive and negative mesh electrodes is conn...

Embodiment 2

[0029] Embodiment 2: The electrode material is a titanium-based ruthenium dioxide composite electrode, and the distance between the electrodes is about 30 mm. The electrode power supply mode is pulse, the pulse voltage is about 15kV, and the pulse frequency is about 50Hz. The wastewater spray frequency is about 1.5 times / s. Other experimental conditions are the same as in Example 1. The experimental results are shown in Tables 2-1 to 2-2.

[0030]Table 2-1 Wastewater Treatment of Comprehensive Sewage Station in an Industrial Park

[0031]

[0032] Table 2-2 Treatment of simulated organic polluted surface water (each containing one pollutant)

[0033]

Embodiment 3

[0034] Embodiment 3: a kind of device of discharge plasma purification waste water according to the present invention is as image 3 shown. The main body of the device is in the shape of a cuboid, made of PP, and the main body dimensions are 200mm×150×450mm, placed horizontally. The electrode is a rectangular mesh electrode, the electrode material is 316L stainless steel, punched and formed, the mesh is rectangular, the overall size is 180mm×130×2mm, the single hole size is 10mm×10mm, the distance between the electrodes is about 10mm, a total of 12 groups, placed horizontally . The electrode power supply mode is DC, the voltage is about 4kV, and the power supply is about 100W.

[0035] The processing process is as follows: the reaction gas is introduced into the gas-liquid contact discharge plasma area of ​​the device through the gas inlet 1 through the gas distributor 3 (inlet), and the positive electrode 8 of the alternating positive and negative mesh electrodes is connect...

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Abstract

The invention provides a method and apparatus for purifying waste water by using discharge plasma, belonging to the technical fields of air pollution control and environmental protection. According to the method, waste water is introduced into the apparatus via waste water spray thrower; a plurality of electrode pairs composed of alternate positive and negative electrodes (or positive electrodes and ground) are arranged in the apparatus and communicated with a high-voltage power source; reaction gas is introduced from a gas inlet in one end of the apparatus; waste water drops sprayed out from the waste water spray thrower contact with the electrodes, which leads to instant energization and discharge between the positive and negative electrodes, so surrounding gas is ionized to form a gas-liquid contact discharge plasma area composed of high-energy electrons, atoms, free radicals and the like; and in the gas-liquid contact discharge plasma area, harmful substances in the waste water are oxidized and degraded, so the purpose of purifying is achieved.

Description

technical field [0001] The invention relates to a method for purifying harmful substances in waste water and a special device thereof, in particular to removing pollutants such as COD, organic matter, ammonia nitrogen and chroma from waste water, and belongs to the technical field of waste water treatment and environmental protection. Background technique [0002] With the rapid development of the chemical industry, various synthetic compounds are becoming more and more diverse, and are widely used in various production processes such as chemical, pharmaceutical, semiconductor and coating industries. After use, many of these compounds are discharged with wastewater or enter water bodies. . Many of these compounds are volatile organic compounds, which have the characteristics of stable chemical structure and not easy to degrade, which brings great difficulties to environmental protection. Most of them are toxic and often have the characteristics of "three causes" (carcinogeni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/467
CPCC02F1/305C02F1/4608C02F1/467C02F1/4672C02F2301/046C02F2303/02C02F2305/023C02F2201/4618C02F2209/08C02F2209/06C02F2201/46C02F2209/14C02F2101/30C02F2101/16
Inventor 黄立维
Owner 黄华丽
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