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Composite catalyst for treating antibiotic wastewater and preparing method and application thereof

A composite catalyst and antibiotic wastewater technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as biochemical pool damage, and reduce the load of wastewater systems , reduce COD value, improve the effect of sewage treatment efficiency

Active Publication Date: 2016-11-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since antibiotics have a significant killing effect on microorganisms, and microorganisms are very sensitive to temperature, pH, salt content, oxygen content, etc., the direct treatment of high-concentration antibiotic wastewater by microbial methods is very ineffective, and it will cause irreversible damage to biochemical pools. the destruction of

Method used

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  • Composite catalyst for treating antibiotic wastewater and preparing method and application thereof
  • Composite catalyst for treating antibiotic wastewater and preparing method and application thereof
  • Composite catalyst for treating antibiotic wastewater and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of colloidal carbon spheres

[0027] Weigh 10g of sucrose and dissolve it in 80mL of distilled water, then add 0.1mL of 0.1moL / L dilute hydrochloric acid solution, place the solution in an autoclave after ultrasonication, react at a constant temperature at 180°C for 4h, centrifuge the obtained product, and use After rinsing with deionized water and ethanol, place it in a vacuum oven at 80°C for 8 hours to obtain colloidal carbon spheres, such as figure 1 .

[0028] (2) Preparation of C@2%NiO / TiO 2

[0029] Take by weighing 10g colloidal carbon spheres and join in the mixed solution of 41g tetrabutyl titanate and 82g isopropanol, disperse evenly; 0.471g Ni(NO 3 ) 2 After being dissolved in water, it was added dropwise into the obtained mixed solution with a dropper, and the obtained colloid was subjected to ultrasound, standing, and vacuum drying, and then placed in a muffle furnace at 300°C for calcination for 3 hours to obtain C@2%NiO / TiO 2 ,Such...

Embodiment 2

[0035] (1) Preparation of colloidal carbon spheres

[0036] Weigh 10g of sucrose and dissolve it in 85mL of distilled water, then add 0.20mL of 0.1moL / L dilute hydrochloric acid solution, place the solution in an autoclave after ultrasonication, react at a constant temperature at 200°C for 6h, centrifuge the obtained product, and use After rinsing with deionized water and ethanol, they were placed in a vacuum oven at 90°C for 10 h to obtain colloidal carbon spheres.

[0037] (2) Preparation of C@1.5% Fe 2 o 3 / TiO 2

[0038] Take by weighing 10g colloidal carbon spheres and join in the mixed solution of 45g tetrabutyl titanate and 135g isopropanol, disperse evenly; 0.569g Fe(NO 3 ) 3 After being dissolved in water, it was added dropwise into the obtained mixed solution with a dropper, and the obtained colloid was subjected to ultrasonication, standing still, and vacuum-dried, and then placed in a muffle furnace at 350°C for calcination for 4.5 hours to obtain C@1.5%Fe 2 ...

Embodiment 3

[0043] (1) Preparation of colloidal carbon spheres

[0044] Weigh 10g of sucrose and dissolve it in 100mL of distilled water, then add 0.30mL of 0.15moL / L dilute hydrochloric acid solution, place the solution in an autoclave after ultrasonication, and react at a constant temperature of 240°C for 8h, centrifuge the obtained product, and use After rinsing with deionized water and ethanol, place them in a vacuum oven at 140°C for 12 hours to dry to obtain colloidal carbon spheres.

[0045] (2) Preparation of C@2.5%ZnO / TiO 2 spherical structure

[0046] Take by weighing 10g colloidal carbon spheres and join in the mixed solution of 50g tetrabutyl titanate and 250g isopropanol, disperse evenly; 0.583g Zn(NO 3 ) 2 After being dissolved in water, it was added dropwise to the obtained mixed solution with a dropper, and the obtained colloid was subjected to ultrasonication, standing still, and vacuum-dried, and then placed in a muffle furnace at 400°C for calcination for 6 hours to ...

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Abstract

The invention discloses a composite catalyst for treating antibiotic wastewater and a preparing method and application thereof. The composite catalyst is expressed with the general formula of C@AxOy / TiO2@BmOn / Al2O3, wherein C represents the carrier carbon, AxOy / TiO2 and BmOn / Al2O3 are active components, wherein A is one of Ni, Fe and Zn, the mass ratio of AxOy to TiO2 is (1.5-2.5%):1, when x is equal to one, y is equal to one, and when x is equal to two, y is equal to three; B is one of Cd, Fe and Cu, the mass ratio of BmOn to Al2O3 is (3.5-5.0%):1, when m is equal to one, n is equal to one, and when m is equal to two, n is equal to three. .OH generated by excitating the composite catalyst is used, vacuum ultraviolet light catalysis cooperates with chemical catalytic oxidation treatment to degrade the antibiotic wastewater, the requirement for wastewater concentration and the pH value is low, the application scope is wide, wastewater COD value can be reduced substantially at the normal temperature, biodegradability of the wastewater can be improved within short time, and small molecule compounds high in toxicity are removed through vacuum ultraviolet light mineralization; treated wastewater can directly enter a biochemical pool, the wastewater treatment efficiency is improved, and treatment cost is reduced.

Description

technical field [0001] The present invention relates to a catalyst and its preparation method and application, in particular to a composite catalyst for treating antibiotic wastewater and its preparation method and application. Under the action of the composite catalyst, the synergistic degradation of vacuum ultraviolet photocatalysis and chemical catalytic oxidation is realized Antibiotic wastewater. This technology is a complementary technology for anaerobic-aerobic biochemical ponds. It is also the technology of choice for emergency wastewater treatment. Background technique [0002] my country is a big country in the production and use of antibiotics, and its output is increasing year by year. It has now become one of the major producers of antibiotic preparations in the world. Domestic antibiotics account for 20% to 50% of the total production of antibiotics in the world. Wastewater from API workshops in the pharmaceutical industry has the characteristics of high conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J23/745B01J23/80C02F1/32C02F1/72
CPCC02F1/32C02F1/725B01J23/06B01J23/745B01J23/80C02F2305/10B01J35/396B01J35/40
Inventor 吴敏曾平川周宇骋马东阳陈龙军倪恨美李伟杰
Owner SOUTHEAST UNIV
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