Carbon supported catalyst for ozone oxidation, and preparation method and use thereof

A technology of ozone oxidation and catalyst, applied in the field of water treatment, which can solve the problems of high catalyst cost, cumbersome catalyst preparation method, difficult industrial production and application, etc.

Inactive Publication Date: 2014-02-19
BEIJING ORIGINWATER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the catalyst preparation method used in this technology is more loaded down with trivial details, and catalyst cost is higher, is difficult to realiz

Method used

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  • Carbon supported catalyst for ozone oxidation, and preparation method and use thereof
  • Carbon supported catalyst for ozone oxidation, and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Example 1: Using the catalyst of the present invention to treat biochemical effluent

[0109] The implementation steps of this embodiment are as follows:

[0110] A. Activated carbon treatment

[0111] The columnar coconut shell activated carbon was first treated with 24% nitric acid aqueous solution by weight for 1.2 days, and then the acid-treated activated carbon was washed with deionized water until the washing water was neutral; then, the acid-treated activated carbon was used for 40 days by weight % sodium hydroxide aqueous solution for 0.5 days, and then use deionized water to rinse the alkali-treated activated carbon until the washing water is neutral; finally dry at a temperature of 110 ° C and an air atmosphere for 3.0 hours;

[0112] B. Preparation of precursor solution

[0113] Dissolving the copper nitrate active component precursor in deionized water to prepare a 0.80mol / L active component precursor solution;

[0114] C. Dipping

[0115] Under the cond...

Embodiment 2

[0119] Example 2: Using the catalyst of the present invention to treat biochemical effluent

[0120] The implementation steps of this embodiment are as follows:

[0121] A. Activated carbon treatment

[0122] The coconut shell activated carbon in sheet form is first treated with 1% nitric acid aqueous solution by weight for 3 days, and then the acid-treated activated carbon is rinsed with deionized water until the washing water is neutral; then, the acid-treated activated carbon is reused by weight. 12% sodium hydroxide aqueous solution for 2 days, and then use deionized water to rinse the alkali-treated activated carbon until the washing water is neutral; finally, dry it for 2.8 hours at a temperature of 98 ° C and an air atmosphere;

[0123] B. Preparation of precursor solution

[0124] Copper nitrate active component precursor and potassium nitrate cocatalyst precursor are dissolved in deionized water to prepare a mixed solution of 0.82mol / L active component precursor and...

Embodiment 3

[0130] Example 3: Using the catalyst of the present invention to treat biochemical effluent

[0131] The implementation steps of this embodiment are as follows:

[0132] A. Activated carbon treatment

[0133] Spherical woody activated carbon was first treated with 8% nitric acid aqueous solution by weight for 2.4 days, and then the acid-treated woody activated carbon was washed with deionized water until the washing water was neutral; then, the acid-treated activated carbon was reused by weight for 1 % sodium hydroxide aqueous solution for 1.5 days, and then use deionized water to rinse the alkali-treated woody activated carbon until the washing water is neutral; finally dry it for 3.0 hours at a temperature of 90°C and in an air atmosphere;

[0134] B. Preparation of precursor solution

[0135] Dissolving manganese nitrate and nickel nitrate active component precursors in deionized water to prepare a mixed solution of 0.94mol / L manganese nitrate and 0.06mol / L nickel nitrate...

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Abstract

The invention relates to a carbon supported catalyst for ozone oxidation, and a preparation method and a use thereof. The carbon supported catalyst is composed of an active carbon supported Fe, Cu, Ni or Mg transition metal active component and a Ce, La or K cocatalyst. The catalyst has a very high catalysis activity against non-degradable organic wastewater, allows the COD removal rate to reach above 55% and the biodegradability of the wastewater to be improved to above 0.30, has the advantages of long service life, simple preparation, no secondary pollution, containing of no precious metals, and low production cost, and is very suitable for the use in the industrialized production.

Description

【Technical field】 [0001] The invention belongs to the technical field of water treatment. More specifically, the present invention relates to a carbon-supported catalyst for ozone oxidation, a preparation method of the carbon-supported catalyst, and an application of the carbon-supported catalyst. 【Background technique】 [0002] With the development of society, more and more artificially synthesized compounds have entered the water body, resulting in some highly stable and difficult-to-oxidize organic compounds in the water body, which have caused serious damage to the water environment. The economical and effective removal of such refractory organic pollutants in water has become a hot spot in research and engineering applications in the field of water treatment. [0003] Ozone is a strong oxidizing agent with a high redox potential It was discovered by German chemist Schonbein (Fernando J. Beltrán, Ozone Reaction Kinetics for Water and Wastewater Systems) in 1840. It wa...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/78B01J23/889B01J23/83C02F1/78C02F101/30
Inventor 俞开昌薛涛刘培娟刘云霞
Owner BEIJING ORIGINWATER TECH CO LTD
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