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Ozone catalyst for water treatment and preparation method thereof

A catalyst and water treatment technology, applied in physical/chemical process catalysts, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as loss, and achieve the effect of improving catalytic performance and not easy to be lost with water

Active Publication Date: 2016-06-15
北京鑫天环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, potassium oxide is very soluble in water. If potassium oxide and other metal oxides are loaded on the carrier as effective components, it will quickly lose with water during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Choose 150 mesh potassium feldspar powder and 150 mesh activated carbon powder and mix according to the mass ratio of 1:20, then add the binder polyvinyl alcohol with a mass of 10% of the mass of the mixture and the pore-forming agent ammonium carbonate with a mass of 5% of the mass of the mixture and stir After uniformity, use a granulator to extrude into a columnar shape, then bake in an anaerobic state at 450°C for 4 hours and cool naturally to form a carrier; soak the carrier in a hydrochloric acid solution with a mass concentration of 1% to activate it for 24 hours, and dry it for later use; Manganese nitrate , copper nitrate, and ferric nitrate according to the molar ratio of 1:1:1 to make a salt solution with a mass concentration of 10%, then add an equal volume of columnar carrier, soak for 24 hours, dry at 105°C for 4 hours, and then anaerobic state , 450 ° C roasting for 4 hours and then cooling naturally, which is the ozone catalyst for water treatment.

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Embodiment 2

[0031] Select 100 mesh potassium feldspar powder and 180 mesh activated carbon powder to mix according to the mass ratio of 1:10, then add the binder polyvinyl alcohol with a mass of 12% of the mass of the mixture and the pore-forming agent ammonium carbonate with a mass of 7% of the mass of the mixture and stir After uniformity, it is prepared into a spherical shape with a granulator, and then it is baked in an anaerobic state at 450°C for 4 hours and naturally cooled as a carrier; manganese nitrate and iron nitrate are formulated into a salt solution with a mass concentration of 15% according to a molar ratio of 1:1. Then add an equal volume of spherical carrier, soak for 24 hours, dry at 105°C for 4 hours, then bake at 450°C for 4 hours in an anaerobic state, then cool naturally, which is the ozone catalyst for water treatment.

[0032]The COD of a refinery wastewater after biochemical treatment is 105mg / L, pH=8.0. The ozone catalyst prepared in this example is used for tre...

Embodiment 3

[0034] Select 150 mesh potassium feldspar powder and 150 mesh activated carbon powder to mix according to the mass ratio of 1:7, then add 10% binder water glass and 10% pore-forming agent ammonium bicarbonate After stirring evenly, use a granulator to prepare a columnar shape, then bake in an anaerobic state at 450°C for 4 hours and cool naturally to form a carrier; soak the carrier in a hydrochloric acid solution with a mass concentration of 3% to activate it for 24 hours, and dry it for later use; Manganese nitrate , cobalt nitrate according to the molar ratio of 1:1 to prepare a salt solution with a mass concentration of 15%, then add an equal volume of columnar carrier, dry at 105°C for 4 hours after impregnating for 24 hours, and then roast at 450°C for 4 hours in an anaerobic state. Naturally cool after hours, it is the ozone catalyst for the water treatment.

[0035] A certain chemical wastewater has a COD of 120mg / L and a pH of 8.1 after biochemical treatment. The ozo...

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Abstract

The invention relates to an ozone catalyst for water treatment and a preparation method thereof. The preparation method includes the steps of: 1) preparation of a carrier: mixing potassium feldspar powder with activated carbon powder, adding an adhesive and a pore forming agent, performing extrusion moulidng, and roasting the mixture with oxygen isolated, and cooling the mixture to form the catalyst carrier; 2) activation on the carrier; soaking the carrier in a nitric acid solution, and drying the carrier for later use; and 3) preparation of the catalyst: soaking the carrier, in an isovolumetric manner, in a nitrate solution containing active components, and drying the carrier, roasting the carrier with oxygen isolated, and naturally cooling the catalyst. The ozone catalyst for water treatment has a wide distribution range of pore diameter, so that organic substances in different molecular weight in the wastewater can be captured effectively. The catalyst has wide applicability on wastewater, especially the wastewater having complex components. The preparation method is simple, is scientific and reasonable and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an ozone catalyst for water treatment and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, the industrial wastewater produced not only increases in water volume, but also develops towards the trend of complex composition and high content of inorganic salts. At present, most of the industrial wastewater treatment processes at home and abroad adopt economical biological methods for treatment. However, with the increasingly stringent discharge standards in various places, it is difficult to meet the discharge targets only by biochemical treatment, especially high-salt and refractory wastewater. Require. [0003] The treatment of high-salt and refractory wastewater is a hot research topic of domestic and foreign scholars in recent years. In order to achieve a higher treatment depth, physical adsorption and chemical oxidat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/78C02F1/78
CPCB01J23/002B01J23/78B01J23/8892B01J2523/00C02F1/725C02F1/78B01J2523/13B01J2523/17B01J2523/31B01J2523/41B01J2523/72B01J2523/842B01J2523/845B01J2523/847
Inventor 隽玉杰王浩英
Owner 北京鑫天环境科技有限公司
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