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Supported bi-component metal oxide catalyst for advanced treatment of petrochemical wastewater and preparation method thereof

A catalyst and two-component technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, oxidized water/sewage treatment, etc., can solve the problem of low efficiency of ozone catalytic oxidation advanced treatment catalyst, Achieve the effects of low production cost, wide range of raw materials, good mechanical properties and stability

Inactive Publication Date: 2020-06-16
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to develop a kind of water quality suitable for the more stringent discharge standards faced by petrochemical comprehensive wastewater containing a large amount of low-concentration toxic and refractory organic matter, and the efficiency of ozone catalytic oxidation advanced treatment catalysts is generally not high. Ozone catalyzes the oxidant, improves the removal rate of refractory organic matter in water, reduces the dosage of ozone, and saves operating costs

Method used

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  • Supported bi-component metal oxide catalyst for advanced treatment of petrochemical wastewater and preparation method thereof
  • Supported bi-component metal oxide catalyst for advanced treatment of petrochemical wastewater and preparation method thereof
  • Supported bi-component metal oxide catalyst for advanced treatment of petrochemical wastewater and preparation method thereof

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Embodiment Construction

[0029] The present invention selects different metal active components to prepare catalysts according to different molar ratios, and the specific methods are as follows:

[0030] Step (1): Purchase commercially available activated alumina balls as the carrier, the particle size of the carrier is 3 mm, wash with deionized water until neutral, then activate with 0.1mol / L hydrochloric acid solution for 2 hours, and rinse with deionized water again until neutral , Dry at 105°C for 12 hours before use.

[0031] Step (2): Take Mn 2+ 、Cu 2+ Ionic combination, Cu 2+ , Fe 3+ Ionic combination, Zn 2+ 、Cu 2+ Ion combinations were used as catalyst active components to prepare impregnation solutions. Among the above ion combinations, Mn 2+ and Cu 2+ , Cu 2+ and Fe 3+ , Zn 2+and Cu 2+ The molar sum of the two ions in each combination is 0.2 mol. According to the molar ratio of the corresponding compound ions, it is 1:0, 0.9:0.1, 0.8:0.2, 0.7:0.3, 0.6:0.4, 0.5:0.5, 0.4:0.6, 0.3:...

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Abstract

The invention discloses a preparation method of an obligate supported bi-component metal oxide catalytic ozonation catalyst for advanced treatment of petrochemical wastewater. Specifically, the supported metal oxide catalytic ozonation catalyst is prepared from commercially available activated alumina balls through the steps of carrier activation, impregnation liquid preparation, carrier impregnation, catalyst roasting and catalyst cleaning. The method disclosed by the invention is simple, low in cost and easy to prepare, and the prepared catalyst has relatively high removal efficiency on secondary effluent of petrochemical wastewater; and the product has good stability, can be repeatedly used, and has very important meanings for application of a catalytic ozonation technology of a petrochemical sewage treatment plant, energy conservation and consumption reduction.

Description

technical field [0001] The invention belongs to the technical field of ozone catalyst preparation, especially for the secondary biological effluent quality of petrochemical wastewater, and relates to a supported two-component ozone catalytic oxidation with gamma-A12O3 pellets as the carrier and active components of copper oxide and manganese oxide Catalyst preparation method. Background technique [0002] The petrochemical industry is a pillar industry of the country, and it is also one of the heavy polluting industries. The wastewater discharged during the production process contains a large amount of toxic and refractory organic substances. If it cannot be treated effectively, it will cause serious pollution to the receiving water body. Ecological security and drinking water cause great harm to human health. At present, the total amount of industrial wastewater discharged each year in my country exceeds 2.1×1010 tons, most of which are discharged after being treated by ce...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/10C02F1/78C02F1/72C02F101/30
CPCC02F1/725C02F1/78B01J23/8892C02F2101/30B01J35/61B01J2523/00B01J37/0207B01J37/088B01J37/0203B01J23/002C02F2103/365B01J35/40B01J35/51B01J2523/17B01J2523/31B01J2523/72B01J21/04B01J37/0213B01J37/04B01J37/06B01J37/08
Inventor 吴昌永周岳溪付丽亚
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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