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Catalytic ozonization water treatment method

A treatment method, ozonated water technology, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, catalyst carriers, etc., can solve the problems of easy breakage, short service life, and easy oxidation and decomposition of activated carbon by ozone

Inactive Publication Date: 2008-12-17
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 problems that activated carbon is easily oxidized and decomposed by ozone in the current catalytic ozonation water treatment method, the strength is low, easy to break, the service life is short, and the intercepting device needs to be added. Catalytic ozonation water treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0004] Specific embodiment 1: Catalytic ozonation water treatment method in this embodiment: the water to be treated is pretreated first, then catalytic ozonation treatment, and then the water can be discharged after post-treatment; the molar ratio of ozone to catalyst in the catalytic ozonation treatment process 1:0.01~5, the dosage of ozone is 0.1~1000mg / L, the water flow velocity in the catalytic ozonation reactor is 1~20m / h, the contact time between ozone and catalyst and water is 5s~300min, and the catalyst is graphite Or graphite loaded with active substances.

[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-cascad...

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the catalyst is 0.01 μm to 0.5 m. Others are the same as the first embodiment.

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the catalyst is graphite. Others are the same as the first embodiment.

[0008] The removal rate of organic pollutants in the water treatment process of this embodiment is greater than 55%.

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PUM

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Abstract

A process for treating water by catalytic ozonization method includes such steps as pre-treating the water to be treated, catalytic ozonization by using the graphite or the active substance carried graphite 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] With the development of industry and agriculture, the pollution of surface water is also increasing. Most of the organic pollutants in the water are difficult to be effectively removed by the self-purification of the water body. Most of these organic pollutants (such as pesticides, algal toxins, and organic solvents) are carcinogenic. , teratogenic, mutagenic substances or endocrine disrupting substances, if not handled thoroughly will seriously endanger human health. It is difficult to effectively remove all kinds of high-stable organic pollutants in water by ozone oxidation water treatment technology alone, and the organic acids generated by incomplete oxidation of organic pollutants will produce many disinfection by-products in the post-treatment (chlorination disinfection) process; In addition, organic acids can also be used as bio-assimilable organic matter in the pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/78B01J32/00B01J23/89
Inventor 马军刘正乾
Owner HARBIN INST OF TECH