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Loaded ozonation catalyst and preparation method and application thereof

An ozone oxidation, supported technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the low utilization rate of ozone and the limitation of application of ozone oxidation technology , high operating costs and other issues, to achieve the effect of increasing utilization efficiency, reducing the chance of recombination, and good degradation effect

Inactive Publication Date: 2017-01-25
浙江巨能环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its oxidation selectivity, low ozone utilization rate, and high operating costs, the popularization and application of ozone oxidation technology has been severely limited.

Method used

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  • Loaded ozonation catalyst and preparation method and application thereof
  • Loaded ozonation catalyst and preparation method and application thereof
  • Loaded ozonation catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Pretreatment of carrier particles: First, place a spherical alumina with a diameter of 3-5 mm in a mixture of ethanol: acetone with a volume ratio of 1:10 and ultrasonically vibrate for 20 minutes to remove organic matter on the surface; Put the alumina particles into 0.5mol / L HNO 3 Boil for 30 minutes to remove the oxide layer on the surface; take out the acid-treated alumina particles and wash them with ultrapure water until neutral, then dry them at 105°C;

[0030] (2) Preparation of gel solution: Add 5ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, stir well and add 17.5g of SnCl 4 ·5H 2 O, after dissolving, a tin chloride solution is obtained; add 3ml analytically pure glacial acetic acid dropwise to the tin chloride solution, stir evenly, add 145ml tetrabutyl titanate, and slowly add 15ml ultrapure water under rapid stirring to obtain a transparent and stable gel solution;

[0031] (3) Impregnation: put 20 g of the pretre...

Embodiment 2

[0035] (1) Pretreatment of carrier particles: firstly, place a spherical alumina with a diameter of 3-5 mm in a mixture of ethanol: acetone with a volume ratio of 5:1 and vibrate ultrasonically for 2 minutes to remove organic matter on the surface; Put the alumina particles into 0.1mol / L HNO 3Boil for 300 minutes to remove the oxide layer on the surface; take out the acid-treated alumina particles, wash them with ultra-pure water until neutral, and dry them at 90°C;

[0036] (2) Preparation of gel solution: Add 5ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, add 17.5g of tin sulfate after stirring evenly, and obtain tin sulfate solution after dissolving; add 3ml dropwise to the tin sulfate solution for analysis Pure glacial acetic acid, after stirring evenly, add 145ml of titanium tetrachloride, and slowly add 15ml of ultrapure water dropwise under rapid stirring to obtain a transparent and stable gel solution;

[0037] (3) Impregnation: T...

Embodiment 3

[0041] (1) Pretreatment of carrier particles: first, place spherical alumina with a diameter of 3-5 mm in a mixture of ethanol: acetone with a volume ratio of 10:1 and ultrasonically vibrate for 240 minutes to remove organic matter on the surface; Put the alumina particles into 4mol / L HNO 3 Boil in medium for 10 minutes to remove the oxide layer on the surface; take out the acid-treated alumina particles and wash them with ultrapure water until neutral, then dry them at 150°C;

[0042] (2) Preparation of gel solution: Add 5ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, add 17.5g of tin nitrate after stirring evenly, and obtain tin nitrate solution after dissolving; add 3ml dropwise to the tin nitrate solution for analysis Pure glacial acetic acid, after stirring evenly, add 145ml of titanium hydroxide, slowly add 15ml of ultrapure water dropwise under rapid stirring, to obtain a transparent and stable gel solution;

[0043] (3) Impregnatio...

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Abstract

The invention belongs to the technical field of catalysts, particularly relates to an ozonation catalyst for wastewater treatment and aims to provide a loaded ozonation catalyst having the advantages of high pollutant removal rate, high catalytic activity, zero secondary pollution and little active ingredient loss and a preparation method and application thereof. The loaded ozonation catalyst uses gamma-alumina as a carrier and SnO2 and TiO2 as active components. The preparation method includes five processes: carrier particle pretreatment, gel solution preparation, impregnation, calcining and repeated treatment. The loaded ozonation catalyst can be used for ozonation treatment of antibiotic wastewater like chloromycetin wastewater, penicillin wastewater, erythromycin wastewater, streptomycin wastewater, vancomycin wastewater and pipemidic acid wastewater and has the advantages of high removal efficiency, high ozone utilization rate and needlessness of external adding of agents.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to an ozone oxidation catalyst used for waste water treatment. Background technique [0002] Antibiotic contamination is the most important type of contamination in pharmaceuticals and personal care products (PPCPs). Since the advent of penicillin, hundreds of antibiotics have been developed and used. Hundreds of antibiotics have been detected in rivers, lakes, offshore seawater and other water resources. Because antibiotics have the characteristics of wide pollution, refractory degradation, high toxicity, and easy deposition, and the traditional water treatment process is poor in removing antibiotics. Trace amounts of antibiotics may cause microbial resistance, posing a major threat to human health and ecosystems. Therefore, it is necessary to study the treatment technology of antibiotics. [0003] Commonly used treatment technologies for antibiotic wastewater include incinerat...

Claims

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Application Information

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IPC IPC(8): B01J23/14C02F1/78
CPCB01J23/14B01J37/024B01J37/036B01J2523/31B01J2523/43B01J2523/47C02F1/725C02F1/78
Inventor 凌明叶国祥李婷郭慧朱宏博
Owner 浙江巨能环境工程有限公司
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