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Titanium dioxide sieve for photocatalytic treatment of phenol-containing wastewater

A titanium dioxide and photocatalytic technology, which is applied in the directions of light water/sewage treatment, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problems of low utilization rate and poor effect, and achieve the effect of low cost and resource saving

Inactive Publication Date: 2015-12-09
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: aiming at the problem of poor effect and low utilization rate when treating phenol-containing wastewater, a method combining photocatalytic technology and adsorption technology is provided to treat phenol-containing wastewater, and the method has low energy consumption , mild reaction conditions, easy operation, can reduce secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] In an ice-salt bath at -4°C, measure 5mL of titanium tetrachloride solution and slowly add it dropwise to the mixed solution of 5mL of concentrated sulfuric acid and 100mL of distilled water for stirring. The stirring time is 3min and the stirring speed is 200r / min. At the same time, the temperature was raised, and the temperature was raised to 45°C and kept for 20 minutes; after the heat preservation was completed, 10 mL of concentrated ammonia water was quickly added dropwise to the above solution to adjust the pH value to 8. for 20 h; filter the above-mentioned aged product, wash away the chloride ion with distilled water, and detect the chloride ion with 0.15mol / L silver nitrate until it cannot be detected, then add 50mL absolute ethanol to rinse for 3 times, and the product Bake under an infrared lamp for 3 hours, dry and grind the precipitate, bake at 600° C. for 5 hours, and naturally cool to obtain a white product nano-titanium dioxide, put it aside, and set asid...

example 2

[0022] In an ice-salt bath at -4°C, measure 5mL of titanium tetrachloride solution and slowly add it dropwise to the mixed solution of 5mL of concentrated sulfuric acid and 100mL of distilled water for stirring. The stirring time is 4min and the stirring speed is 200r / min. At the same time, the temperature was raised, and the temperature was raised to 45°C and then kept for 25 minutes; after the heat preservation was completed, 10mL of concentrated ammonia water was quickly added dropwise to the above solution to adjust the pH value to 9. After the adjustment, continue to stir for 15 minutes to make the reaction homogeneous. for 22 hours; filter the above-mentioned aged product, wash away the chloride ion with distilled water, and detect the chloride ion with 0.15mol / L silver nitrate until it cannot be detected, then add 50mL absolute ethanol to rinse for 3 times, and the product Bake under infrared lamp for 4h, dry and grind the precipitate, bake at 600°C for 5h, and get the w...

example 3

[0024] In an ice-salt bath at -4°C, measure 5mL of titanium tetrachloride solution and slowly add it dropwise to the mixed solution of 5mL of concentrated sulfuric acid and 100mL of distilled water for stirring. The stirring time is 5min and the stirring speed is 200r / min. At the same time, heat up to 45°C and keep warm for 30 minutes; after the heat preservation is over, quickly add 10mL of concentrated ammonia water dropwise to the above solution to adjust the pH value to 9. After the adjustment, continue to stir for 15 minutes to make the reaction homogeneous, and stand at room temperature. for 24 hours; filter the above-mentioned aged product, wash away the chloride ion with distilled water, and detect the chloride ion with 0.15mol / L silver nitrate until it cannot be detected, then add 50mL absolute ethanol to rinse for 3 times, and the product Bake under an infrared lamp for 5h, dry and grind the precipitate, bake at 600°C for 5h, and naturally cool to obtain a white produ...

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Abstract

The invention relates to a titanium dioxide sieve for photocatalytic treatment of phenol-containing wastewater, and belongs to the technical field of environmental protection. The invention provides a photocatalysis technology and adsorption technology combination method for treating phenol-containing wastewater to solve the problems of poor treatment effect and low utilization rate of the phenol-containing wastewater. The phenol-containing wastewater is oxidized under the photocatalysis action of nanometer titanium dioxide, so photocatalytic degradation of the phenol-containing wastewater is realized; and the adsorption ability of an active carbon carrier provides high concentration environment for a photocatalytic reaction, so the photocatalytic reaction rate is improved. The titanium dioxide sieve and the method have the advantages of effective adsorption and removal phenol substances in wastewater at normal temperature under normal pressure, no secondary pollution and environmental protection.

Description

technical field [0001] The invention relates to a titanium dioxide sieve filter for photocatalytically treating wastewater containing phenol, and belongs to the technical field of environmental protection. Background technique [0002] With the rapid development of industrial production, a large amount of waste continues to enter the environment, which makes the living environment of human beings worse and worse, thus threatening the survival and health of human beings; among them, the problem of water environmental pollution is particularly serious, and phenolic wastewater is a kind of waste water with a wide range of sources and a large amount of water. It is one of the industrial wastewater with large and serious hazards; phenolic compound is a kind of protoplasmic poison, which has a toxic effect on all living organisms; it can be inhaled through skin and mucous membrane contact or soaked into living organisms through the mouth, and cell progenitors The protein in the sl...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/28C02F1/72C02F1/58C02F101/34
Inventor 徐炜
Owner CHANGZHOU UNIV
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