Carbon nanometer pipe catalytic ozonization water treatment method

A technology of carbon nanotubes and treatment methods, which can be used in oxidation water/sewage treatment, chemical instruments and methods, catalyst carriers, etc., and can solve the problems of low strength, easy breakage, and activated carbon decomposition.

Inactive Publication Date: 2006-11-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that active carbon is easy to be oxidized and decomposed by ozone in the current catalytic ozonation process using activated carbon as a catalyst, has low streng

Method used

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specific Embodiment approach 1

[0004] Specific implementation mode 1: In this embodiment, the carbon nanotube catalyzed ozonation water treatment method: the water to be treated is firstly pretreated, then the carbon nanotube catalyzed ozonation treatment is carried out, and then the water is discharged after post-treatment; The molar ratio of carbon nanotubes and ozone in the catalyst is 0.01-5:1, the dosage of ozone is 0.1-1000mg / L, the water flow velocity in the catalytic ozonation reactor is 1-20m / h, the ozone and carbon nanotubes and water The contact time is 30s ~ 300min.

[0005] The catalytic ozonation reactor used in this embodiment is the same as the existing equipment, and the water pretreatment and post-treatment processes are also the same as those used in the existing water plant, so there is no need to increase or modify the existing water treatment equipment. The catalytic ozonation reactor in this embodiment is a continuous reactor, a circulating reactor or a multi-cascade reactor, and can ...

specific Embodiment approach 2

[0006] Specific embodiment two: the difference between this embodiment and specific embodiment one is: carbon nanotubes are single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, oriented growth carbon nanotubes and / or carbon nanotubes fiber. Others are the same as the first embodiment.

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the carbon nanotubes are carbon nanotubes loaded with active substances. Others are the same as the first or second embodiment.

[0008] The removal rate of organic pollutants in the water treatment process of this embodiment is greater than 85%.

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Abstract

A process for treating water by catalytic ozonizing method includes such steps as pre-treating the water to be treated, catalytic ozonizing by using the carbon nanotubes as catalyst instead of activated carbon, and post-treating. It can oxidize the organic pollutants to become CO2 and H2O.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] At present, more than 90% of my country's drinking water sources are polluted, and typical pollutants are organic pollutants such as pesticides, algae toxins, and organic solvents, and conventional water treatment processes are difficult to effectively remove these organic pollutants. Ozone oxidation technology has been used in the field of water treatment for a long time, and it is widely used in special industries that require high water purity. However, the ozone oxidation technology still has the problem of strong ozone oxidation selectivity, which makes it difficult to effectively remove persistent and refractory organic pollutants in water; most of the oxidation products are organic acids. At present, the catalytic ozonation water treatment process using activated carbon as a catalyst is mostly used to replace the ozone oxidation technology. Although activated carbo...

Claims

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Application Information

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IPC IPC(8): C02F1/78B01J32/00
Inventor 马军刘正乾赵雷
Owner HARBIN INST OF TECH
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