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Catalyst for treating wastewater as well as preparation method and application of catalyst

A technology for treating wastewater and catalysts, which is applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc. It can solve the problems of single, insufficient adsorption activity, and low catalytic activity of catalysts, and achieve rich pore structure and rich adsorption. , the effect of high surface area

Active Publication Date: 2021-07-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common catalysts in the market such as ceramsite and activated carbon catalysts have the characteristics of relatively single pore distribution. When dealing with complex organic components, the narrow pore size distribution results in insufficient adsorption activity and thus lower catalytic activity of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] After a certain amount of inorganic silicon aluminum oxide is treated at 1100°C, it is fully mixed with activated carbon, polyester fiber, 20% silica sol and an appropriate amount of water, then kneaded, extruded, dried at 100°C for 6 hours, treated under nitrogen protection at 330°C for 6 hours, at room temperature Use acetone 5 times the amount of the carrier to circulate the carrier for 5 hours, separate the solid and liquid, fully remove the organic solvent in the solid particles at 50°C, add the obtained dry solid particles to the sodium hydroxide solution, and oxidize the hydroxide The sodium solution was circulated for 5 hours, filtered, and the obtained solid particles were washed with distilled water until neutral, dried at 100°C for 6 hours, and roasted at 600°C under nitrogen protection for 5 hours. After cooling, the carrier ZA was obtained, and the metal component was quantitatively loaded with a solution containing active metals. Dry at 100°C for 6 hours, t...

Embodiment 2

[0046] After a certain amount of inorganic silicon aluminum oxide is treated at 700°C, it is fully mixed with activated carbon, polyester fiber, 25% silica sol and an appropriate amount of water, then kneaded, extruded, dried at 110°C for 5 hours, treated under nitrogen protection at 300°C for 8 hours, at room temperature Use DMF 4 times the amount of the carrier to circulate the carrier for 5 hours, separate the solid and liquid, fully remove the organic solvent in the solid particles at 60 ° C, add the obtained dry solid particles to the sodium hydroxide solution, and dissolve the sodium hydroxide The solution was circulated for 5 hours, filtered, and the obtained solid particles were washed to neutral with distilled water, dried at 110°C for 6 hours, and roasted at 700°C under nitrogen protection for 4 hours. Dry at ℃ for 6 hours, then roast at 500℃ for 5 hours under the protection of nitrogen to obtain the catalyst precursor, soak the catalyst precursor in dimethyldichloros...

Embodiment 3

[0048] After a certain amount of inorganic silicon aluminum oxide is treated at 900°C, it is fully mixed with activated carbon, polyvinyl alcohol fiber, 20% water glass and an appropriate amount of water, then kneaded, extruded, dried at 90°C for 8 hours, treated under nitrogen protection at 315°C for 8 hours, At room temperature, use DMSO 4 times the amount of the carrier to circulate the carrier for 5 hours, separate the solid from the liquid, fully remove the organic solvent in the solid particles at 80°C, add the obtained dry solid particles to the sodium hydroxide solution, and dissolve the hydrogen The sodium oxide solution was circulated for 8 hours, filtered, and the obtained solid particles were washed with distilled water until neutral, dried at 110°C for 6 hours, and roasted at 800°C under nitrogen protection for 4 hours. After cooling, the carrier ZC was obtained, and the metal component was quantitatively loaded with a solution containing active metals. , dried at ...

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Abstract

The invention provides a catalyst for treating wastewater as well as a preparation method and application of the catalyst. The preparation method of the catalyst for treating wastewater comprises the following steps of: mixing inorganic silicon-aluminum oxide, activated carbon, organic fiber chopped strands, a binder and water by means of contact, and carrying out forming and drying to obtain a carrier B; and further treating the carrier B with an organic solvent and sodium hydroxide to obtain a composite carrier, then enabling the composite carrier to enter an active component to obtain a catalyst precursor, finally, contacting the catalyst precursor with an organosilane-containing solvent, and performing washing and drying to obtain the catalyst. The catalyst prepared by the preparation method disclosed by the invention has the characteristics of good catalytic performance, strong wear resistance and high activity stability, and is beneficial to improving the removal rate of organic pollutants in wastewater.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a catalytic material for treating chemical sewage and a preparation method thereof. Background technique [0002] The production process of chemical products will produce a large amount of sewage rich in compounds, such as the highly toxic wastewater produced in the daily production process of pharmaceutical factories, pesticide factories and coal chemical enterprises. This kind of wastewater generally has complex chemical components and high COD. The salt content is good, the toxicity is strong, and the biochemical property is poor. [0003] At present, most of the chemical wastewater is treated by one or a combination of several processes in micro-electrolysis, chemical oxidation, flocculation, biochemistry, and membrane technology. In these processes and process combinations, sludge, secondary pollution, and concentrated Water and other issues, the treatment effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/78B01J31/32B01J35/10B01J37/00C02F1/72C02F1/78C02F101/30
CPCB01J29/7807B01J31/0274B01J31/32B01J37/0018C02F1/725C02F1/78C02F2101/30B01J2229/20B01J2229/32B01J35/643B01J35/633B01J35/647B01J35/615Y02W10/37
Inventor 周建华蒋广安赵越李宝忠郭宏山
Owner CHINA PETROLEUM & CHEM CORP
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