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A kind of catalytic ozonation water treatment method using titanium oxide as catalyst

A technology of ozonated water and treatment method, which is applied in oxidation water/sewage treatment, physical/chemical process catalyst, water/sewage treatment, etc., to achieve the effect of less loss of active components, inhibiting particle growth, and increasing specific surface area

Active Publication Date: 2019-10-29
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Ti n o 2n-1 There are few reports on catalysts used in catalytic ozonation

Method used

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  • A kind of catalytic ozonation water treatment method using titanium oxide as catalyst
  • A kind of catalytic ozonation water treatment method using titanium oxide as catalyst
  • A kind of catalytic ozonation water treatment method using titanium oxide as catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 15g of glucose and 35g of rutile titanium dioxide in a beaker, add water, mix and dry, put the obtained mixture into a tube furnace, set the reaction temperature to 1075°C under the condition of flowing nitrogen, and set the calcination time to 3h , Sample 1 was obtained after the reaction. Its XRD pattern is shown in figure 1 , indicating that all diffraction peaks can be related to Ti 6 o 11 The position of the peak matches, indicating that it is Ti 6 o 11 ; Its SEM picture is shown in Figure 4 , the nano-carbon fiber on the surface of the particle is a carbon layer coated on the surface; the BET specific surface area is 7.321m 2 / g.

Embodiment 2

[0042]Weigh 20g of glucose and 30g of rutile titanium dioxide in a beaker, add water, mix, and dry, put the obtained mixture into a tube furnace, set the reaction temperature to 1050°C under the condition of flowing nitrogen, and the holding time to 1.5 h, sample 2 was obtained after the reaction was completed. Its XRD pattern is shown in figure 2 , indicating that all diffraction peaks can be related to Ti 4 o 7 The position of the peak matches, indicating that it is Ti 4 o 7 ; Its SEM picture is shown in Figure 5 , the nano-carbon fiber on the surface of the particle is a carbon layer coated on the surface; the BET specific surface area is 25.590m 2 / g.

Embodiment 3

[0044] Weigh 5g of glucose and 45g of rutile titanium dioxide in a beaker, add water, mix, and dry, put the obtained mixture into a tube furnace, set the reaction temperature to 1000°C under the condition of flowing argon, and the calcination time is After 1h, sample 3 was obtained after the reaction was completed. Its XRD pattern is shown in image 3 , indicating that all diffraction peaks can be related to Ti 9 o 17 The position of the peak matches, indicating that it is Ti 9 o 17 ; Its SEM picture is shown in Figure 6 , the nano-carbon fiber on the surface of the particle is a carbon layer coated on the surface; the BET specific surface area is 8.657m 2 / g.

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Abstract

The invention discloses a catalytic ozonation water treatment method using titanium suboxide material as a catalyst. Rutile titanium dioxide is selected as the reaction raw material and glucose is used as the reducing agent. The mixture of the two is loaded into a tube furnace and heated under vacuum conditions. Or calcine under flowing inert gas conditions to obtain a blue-black titanium suboxide catalyst; add the prepared titanium suboxide as a catalyst to the organic wastewater, adjust the pH value of the organic wastewater, introduce ozone, and stir to catalyze the ozonation reaction. This new type of catalyst has higher degradation efficiency and more complete TOC removal, which solves the problem of low utilization rate of ozone alone in the two wastewater treatments and difficulty in effectively mineralizing organic matter. At the same time, the material is non-toxic and harmless as a catalyst and has the advantage of being environmentally friendly. The catalyst can be reused after regeneration and has broad application prospects.

Description

technical field [0001] The invention provides a catalytic ozonation water treatment method using titanium dioxide as a catalyst, which belongs to the technical field of organic wastewater treatment. Background technique [0002] The economic and social development has brought about the decrease of the earth's water resources and the massive pollution of water bodies. Human beings cannot survive without water, and water resources are crucial to the sustainable development of human beings in the future. Human life, industrial production and agricultural activities all discharge a large amount of pollutants into water, which have a great impact on health and the environment. Organic toxic pollutants in water have a particularly serious impact on the environment, including polychlorinated biphenyls such as organic pesticides, strong carcinogenic fused-ring aromatic hydrocarbons, heterocyclic compounds and aromatic amines, phenols, and nitrile compounds. The development of wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06C02F1/30C02F1/72C02F1/78C02F101/30C02F101/34
CPCC02F1/30C02F1/725C02F1/78B01J21/063C02F2101/308C02F2101/345B01J35/39
Inventor 景文珩毛宪袁芳璐费朝飞邢卫红
Owner NANJING TECH UNIV
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