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Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field

A high-voltage pulsed electric field, refractory organic matter technology, applied in the field of water pollution treatment, can solve the problems of high energy consumption, difficult to achieve partial discharge of fillers, unfavorable mass transfer and diffusion, etc. Effect

Inactive Publication Date: 2006-07-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for removing refractory organic matter in water by a packing bed in a high-voltage pulse electric field, so as to overcome the disadvantages of the prior art that the partial discharge of the packing is difficult to realize due to the fact that the packing is completely submerged in water, and the energy consumption is very large. Gas and liquid flow in the same direction, which is not conducive to mass transfer and diffusion.

Method used

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  • Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field
  • Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field
  • Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field

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specific Embodiment approach 1

[0010] Specific implementation mode one: the following combination figure 1 This embodiment will be specifically described. The technical solution of this embodiment is: apply pulse high voltage between the high voltage electrode 2 and the ground electrode 3 in the reaction vessel 4 filled with the particle filler 5 through the high voltage pulse power supply 1, and fill the gap between the high voltage electrode 2 and the ground electrode 3 The particle filler 5 is a high dielectric constant particle. When a pulsed high voltage is applied between the high voltage electrode 2 and the ground electrode 3, the aqueous solution to be treated passes through the spray tube arranged in the middle above the high voltage electrode and the ground electrode under the action of the water pump 7. Or the nozzle 6 sprays evenly into the reaction area in the form of mist droplets, and forms a thin layer of water film on the surface of the granular filler 5; the aeration tube 8 arranged in the...

specific Embodiment approach 2

[0011] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the surface of the particle filler 5 supports metals, metal oxides or nano-scale semiconductor catalysts; the supported metals include: cobalt, copper, nickel, chromium, vanadium, platinum , palladium, ruthenium, rhodium, lead, cerium, iron or silver; the supported metal oxides include iron oxides such as iron oxyhydroxide and ferric oxide, manganese oxides, copper oxides or vanadium oxides, and the supported nanoscale The semiconductor catalyst includes nano-scale titanium dioxide or nano-scale silicon dioxide, and the surface of the particle filler 5 can also support the above-mentioned metal compound or the above-mentioned metal oxide compound. Other composition and connection modes are the same as those in Embodiment 1.

specific Embodiment approach 3

[0012] Specific implementation mode three: the following combination figure 2 This embodiment will be specifically described. The difference between this embodiment and Embodiment 1 is: the high voltage electrode 2 and the ground electrode 3 are both metal plates, the high voltage electrode 2 and the ground electrode 3 are arranged in parallel and opposite each other, and the distance between the high voltage electrode 2 and the ground electrode 3 is 1 to 5 cm; other The composition and connection method are the same as those in the first embodiment.

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Abstract

The invention relates to a method to remove the non-degradable organic in water with a packed bed in high-voltage impulse electric field, which comprises: forcing impulse high voltage between the high-voltage electrode (2) and the grounding electrode (3) in reactor (4) filled particulate filling (5) with high dielectric constant; at the same time, pumping the being treated water to sprinkle evenly by mist liquid droplet form to the reaction area through an atomizer or sprinkler (6) on top between two electrodes, and forming a thin water film on surface of (5); exposing air, oxygen or ozone evenly by the aeration tube arranged on middle below the (2) and (3). This invention overcomes the drawbacks in prior art, such as flooding the filling, realizing hardly local filling discharge, large energy consumption, and disbenefit to mass transfer and diffusion.

Description

technical field [0001] The invention relates to a water pollution treatment method, in particular to a method for removing refractory organic matter in water by using a packed bed under the action of a high-voltage pulse electric field. Background technique [0002] With the increasingly serious pollution of water environment, it is difficult to remove refractory organic matter in water by traditional water treatment methods. The advanced oxidation technology developed in recent years can effectively remove these refractory organic substances. Its mechanism of action is to generate OH free radicals, and then induce a series of free radical chain reactions to attack various organic pollutants in water until they are degraded into carbon dioxide, water and other mineral salts. Among them, high-voltage pulse discharge plasma technology, as an emerging advanced oxidation technology, has attracted the attention of many researchers. The high-voltage pulse discharge plasma method...

Claims

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Application Information

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IPC IPC(8): C02F1/48C02F1/78C02F101/30
Inventor 马军朱丽楠杨世东
Owner HARBIN INST OF TECH
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