High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water

A technology of high-voltage pulse discharge and refractory organic matter, which is applied in the fields of oxidized water/sewage treatment, electrochemical water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., and can solve problems such as low efficiency

Inactive Publication Date: 2005-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects of low efficiency of the traditional high-voltage pulse discharge method for degrading organic matter, a high-efficiency high-voltage pulse discharge catalytic oxidation method for removing refractory organic matter in water is provided.

Method used

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  • High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water
  • High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water
  • High-pressure pulse discharge catalytic oxidation method for removal of undegradable organic substances in water

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specific Embodiment approach 1

[0005] Specific implementation manner 1: The following specifically describes this implementation manner with reference to FIG. 1. The technical scheme of this embodiment is: it applies a high voltage pulse between the high voltage electrode 2 and the ground electrode 4 in the reaction vessel 1 containing the water to be treated through the high voltage pulse power supply 3, and applies the high voltage pulse to the high voltage electrode 2 and the ground at the same time. Oxygen, ozone, powdered activated carbon, transition metal oxides, hydrogen peroxide or transition metal ions are added to the solution to be treated between the electrodes 4. The transition metal oxides include iron oxide or manganese oxide and some ceramic oxides. The substances specifically include silicon oxide, aluminum oxide, magnesium oxide, and zirconium oxide. The transition metal ions include ferric ions, ferric ions, manganese ions, or cobalt ions. The two output terminals of the high-voltage pulse po...

specific Embodiment approach 2

[0006] Specific implementation manner 2: The following specifically describes this implementation manner with reference to FIG. 1. The difference between this embodiment and the first embodiment is that the high-voltage electrode 2 and the ground electrode 4 have opposite ends, one is pointed and the other is elongated, or both the high-voltage electrode 2 and the ground electrode 4 are rod-shaped and the ends are arranged opposite to each other. , Or the opposite ends of the high-voltage electrode 2 and the ground electrode 4 are elongated and the other is flat, or the opposite ends of the high-voltage electrode 2 and the ground electrode 4 are both flat, and the high-voltage electrode 2 and the ground electrode 4 are flat. The material is stainless steel, the high-voltage electrode 2 and the ground electrode 4 are placed horizontally and immersed in water, and the distance between the high-voltage electrode 2 and the ground electrode 4 is 0.5-10 cm. The other steps are the same ...

specific Embodiment approach 3

[0007] Specific implementation manner three: below in conjunction with Figure 1 and figure 2 This embodiment will be described in detail. The difference between this embodiment and the first embodiment is that oxygen and ozone are exposed from the bottom of the reaction vessel 1, and the bottom of the reaction vessel 1 is provided with a number of evenly arranged air holes 1-1, which enter the reaction vessel 1 from the air holes 1-1. The size of the bubbles formed by the oxygen and ozone is 10 microns to 1.0 mm, and the gas flow rate is 0.01 to 1 liter / sec. The other steps are the same as the first embodiment.

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Abstract

The invention discloses a method of removing the non-degradable organic substance in the water by catalyzed oxidation with high-voltage discharging, comprising applying the high-voltage pulse between the high voltage electrode 2 and earth electrode 4 in the reaction container with water by high voltage impulse power source 3, and at the same time adding oxygen, ozone, powdered activated carbon, transition metal oxide, hydrogen dioxide or transition metal ion to catalyze and oxygenize the organics. The process of removal of non-degradable organic is reinforced because of the existing of diverse catalyst and the efficiency of removal is greatly improved.

Description

Technical field: [0001] The invention relates to a water treatment method, in particular to a method for removing refractory organic matter by using high-voltage pulse discharge. Background technique: [0002] With the development of industrial and agricultural production, water pollution continues to increase. Organic pollutants in water bodies pose a potential threat to human health. In particular, persistent toxic and harmful organics exist stably in water for a long time, and traditional water treatment methods are difficult to remove these highly stable organic pollutants. Advanced oxidation technology generates highly oxidizing hydroxyl radicals to oxidize organics. It is non-selective and is considered to be an effective means to solve organic pollution. High-voltage pulse discharge generates high-voltage pulses between two electrodes in the water, and generates hydroxyl radicals, hydrogen peroxide and other highly oxidizing substances in the water through the phenomenon o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/48C02F1/72
Inventor 马军杨世东
Owner HARBIN INST OF TECH
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