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A kind of sewage purification agent with photocatalytic and coagulation composite performance and its application

A sewage purifier and photocatalytic technology, which is applied in the directions of oxidized water/sewage treatment, light water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. Low efficiency and other problems, to achieve the effect of simple use method, fast decomposition speed, and efficient purification effect

Active Publication Date: 2019-09-27
INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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Problems solved by technology

Titanium dioxide is the semiconductor photocatalyst that has received the most attention so far. It not only has high activity and good thermal stability, but also has stable chemical properties and strong photooxidation resistance. However, the spectral response range is limited to the ultraviolet region, and there is quantum efficiency in practical applications. Low, light energy utilization rate is not high, the utilization rate of visible light is low

Method used

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  • A kind of sewage purification agent with photocatalytic and coagulation composite performance and its application
  • A kind of sewage purification agent with photocatalytic and coagulation composite performance and its application

Examples

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Embodiment 1

[0027] The preparation of the composite purifying agent with photocatalytic degradation performance:

[0028] (1) Adjust the pH of 20wt% sodium silicate solution to 3 with 0.1mol / L dilute sulfuric acid, then stop stirring, and stand for polymerization at 40°C for 1 hour to obtain an activated polysilicate solution;

[0029] (2) At room temperature, mix 8.5 mL of butyl titanate with 20 mL of absolute ethanol, and record it as solution A, and mix a solution consisting of 20 mL of absolute ethanol, 5 mL of glacial acetic acid and 2.5 mL of deionized water , recorded as solution B, add solution A to solution B drop by drop, stir continuously until the dropwise addition is complete, and let it stand for 0.5 h to form a uniform and transparent sol; the sol is ground into powder after standing and air-dried, and dried at 150 After 2 h, the obtained xerogel powder was put into a muffle furnace and heat-treated at 500 °C for 3 h, then ground and sieved to obtain nano-TiO 2 powder;

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Abstract

The invention belongs to the technical field of environment-friendly materials, and particularly relates to a sewage purifying agent with photocatalysis and coagulation composite performance and application thereof. Titanium dioxide powder is prepared through butyl titanate hydrolysis and then is compounded with iron trioxide, and finally a nanometer Fe2O3-TiO2 composite material is chelated with a polysilicic acid solution, aluminum chloride and iron chloride together to prepare the sewage purifying agent of modified titanium dioxide chelated polysilicate aluminum ferrite. The sewage purifying agent prepared by the invention has a coagulation performance as well as an efficient photocatalysis and oxidization performance,can photocatalytically degrade sewage, such as organics with high concentration, ammonia-nitrogen wastewater and heavy metals, and has a very good practical application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection materials, and in particular relates to a sewage purifying agent with photocatalytic degradation and coagulation composite performance and application thereof. Background technique [0002] Since the 20th century, the rapid economic development and large-scale industrial production have brought huge negative effects——the deterioration of the earth's ecology. At present, the governments of various countries have realized the seriousness of environmental problems, and raised a series of issues such as environmental purification and energy development to the height of the country's survival and development. Therefore, research and technology development in this area have attracted the attention of the world. [0003] In industrial production, the pollution of food industry wastewater is worthy of attention, typically such as the pollution of candied fruit food processing wastewater. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/30C02F1/72C02F101/16C02F101/20C02F101/30C02F103/06C02F103/20C02F103/22C02F103/32
Inventor 陈彪肖艳春黄婧魏云华钱庆荣张燕青林香信
Owner INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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