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Sewage purification agent for modified titanium dioxide chelated polyaluminum iron silicate

A technology of polyaluminum iron silicate and sewage purifying agent, which is applied in the directions of oxidized water/sewage treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of low light energy utilization rate and visible light utilization rate. Low, low quantum efficiency and other problems, to achieve the effect of improving the efficiency of wastewater, improving the utilization rate of light, and fast decomposition speed

Active Publication Date: 2019-08-27
INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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  • Description
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  • Application Information

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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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  • Sewage purification agent for modified titanium dioxide chelated polyaluminum iron silicate
  • Sewage purification agent for modified titanium dioxide chelated polyaluminum iron silicate
  • Sewage purification agent for modified titanium dioxide chelated polyaluminum iron silicate

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Embodiment 1

[0025] (1) Adjust the pH of the 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 a polysilicic acid solution;

[0026](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;

[0027] (3) Add 7.27 g of ferric nitrate nonahydrate to 30 mL of absolute ethanol, and then add 1.5 g of nano...

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Abstract

The inventionbelongs to the technical field of environmental materials, and particularly relates to a sewage purification agent containing modified TiO2 chelated polysilicate aluminum. The sewage purification agent is prepared through steps as follows: preparing TiO2 powder from butyl titanateby hydrolysis, then, compositing the TiO2 powder with ferric oxide, and finally, chelating a nano-Fe2O3-TiO2 composite with a polysilicic acid solution, AlCl3 and FeCl3 together to obtain the sewage purification agent containing modified TiO2 chelated polysilicate aluminum. The sewage purification agent containing modified TiO2 chelated polysilicate aluminum has both coagulating property and efficientphotocatalysis property and has quite good actual application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection materials, and in particular relates to a sewage purifier for modified titanium dioxide chelated polyaluminum iron silicate. Background technique [0002] In recent years, my country's large-scale pig farms have developed rapidly, and the pollution generated in the pig farm production process has followed, which has gradually increased the large amount of pig farm wastewater discharged into the environment. However, most of the pig farm wastewater without proper recycling, treatment and disposal is directly discharged, causing serious pollution to the environment and having extremely bad effects. In many areas, the wastewater produced by livestock and poultry farming has exceeded the capacity of the environment, and is becoming a greater source of pollution than domestic sewage and industrial wastewater, and endangering the health of livestock and poultry itself and human beings. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/52C02F1/72C02F101/30
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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