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Environmentally-friendly nano-ceramic material

A nano-ceramic, environmentally friendly technology, applied in the field of nano-ceramic materials, can solve the problems of low utilization rate of visible light, light blocking, precipitation, etc., and achieve the effects of prolonging the photocatalytic reaction time, slowing down the water flow, and saving energy.

Inactive Publication Date: 2018-12-18
SHENGSHIYAOLAN SHENZHEN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the sewage treatment process, due to the presence of a large amount of granular and flocculent sludge in the sewage, the sludge is easy to agglomerate or settle on the lamp tube during the photocatalytic oxidation process, which leads to light blocking and reduces the photocatalytic effect. Conducive to sewage treatment efficiency
[0005] The commonly used photocatalyst is TiO 2 ,TiO 2 Photocatalysts have their own limitations. The band gap energy is 3.2eV. Only when ultraviolet light with a wavelength of less than 387.5nm is irradiated on its surface, its electrons can be excited, and the ultraviolet part of sunlight is less than 5%. And the utilization rate of indoor visible light is lower
In addition, after excited TiO 2 The generated photogenerated electrons and holes are easy to recombine, resulting in the reduction of excited hydroxyl radicals with high oxidation activity, which also limits the TiO 2 Applications in the field of photocatalysis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The present invention is a nano-ceramic material based on environmental protection. The weight percentage of each raw material is: 45% of diatomite, 10% of nano-shell powder, 8% of composite photocatalyst, 2% of surfactant, Dispersant 1%, deionized water 34%;

[0051] The composite photocatalyst is Zr-BiVO 4 Photocatalyst, Zr-BiVO 4 The preparation method of photocatalyst is:

[0052] (1) 10mol bismuth nitrate is dissolved in 60% concentrated nitric acid, is diluted to 5mol / L by adding water while stirring, obtains bismuth nitrate acid solution after stirring;

[0053] (2) 11mol potassium metavanadate is dissolved in 5mol / L potassium hydroxide solution, after stirring, potassium metavanadate solution is obtained;

[0054] (3) While stirring the bismuth nitrate acid solution, drop the potassium metavanadate solution into it, after the dropwise addition, stir for 15-20min;

[0055] (4) 0.12mol zirconium nitrate is added in the mixed solution of step (3), stirring and ...

Embodiment 2

[0071] Working effect experiment of energy saving and environmental protection sewage treatment device:

[0072] Choose water A:

[0073] Table 1. Selection of sewage

[0074]

[0075] Table 2. Water Quality Standards

[0076]

[0077] 1 ton of sewage A enters the sewage sink 1 from the water inlet mechanism 12, the sludge and large particles sink, the sludge is discharged along the inclined base 11 through the sewage discharge mechanism 13, the sewage passes through the filter screen 14, and enters the oxygen supply pool 2, The air generator 41 is turned on, the air supply valve 45 is opened, the air enters into the sewage through the air supply hole 44, the stirring mechanism is turned on, the oxygen in the air is dissolved in the sewage, and the oxygen-dissolved sewage passes through the filter mirror 31, and the filter hole 311 will dissolve Oxygenated sewage is evenly dispersed, and the water flow is slowed down at the same time. The ultraviolet lamp...

Embodiment 3

[0079] Working effect experiment of energy saving and environmental protection sewage treatment device:

[0080] Choose water B:

[0081] Table 2. Selection of sewage water B

[0082]

[0083] Table 2. Water Quality Standards

[0084]

[0085] 1 ton of sewage B enters the sewage sink 1 from the water inlet mechanism 12, the sludge and large particles sink, the sludge is discharged along the inclined base 11 through the sewage discharge mechanism 13, the sewage passes through the filter screen 14, and enters the oxygen supply tank 2, The air generator 41 is turned on, the air supply valve 45 is opened, the air enters the sewage through the air supply hole 44, the oxygen in the air dissolves in the sewage, and the oxygen-dissolved sewage passes through the filter mirror 31, and the filter hole 311 uniformly distributes the oxygen-dissolved sewage. disperse, and slow down the water flow at the same time, the ultraviolet lamp 35 is turned on for 4 hours, and ...

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Abstract

The invention discloses an environmentally-friendly nano-ceramic material. The nano-ceramic material comprises 30-50 wt% of diatomite, 10-15 wt% of seashell nano-powder, 5-10 wt% of a composite photocatalyst, 1-3 wt% of a surfactant, 0.5-2 wt% of a dispersant and 20-35 wt% of deionized water. The nano-ceramic material is used in an energy-saving and environmentally-friendly sewage treatment device, the energy-saving and environmentally-friendly sewage treatment device includes a precipitation tank, an oxygen supply tank and a photocatalytic tank, the photocatalytic tank comprises a filter, a triple prism and a photocatalytic system, the photocatalytic system comprises a first photocatalytic mechanism, a second photocatalytic mechanism and a light source, each of the first photocatalytic mechanism and the second photocatalytic mechanism is composed of a connecting rod and a photocatalytic net, and the photocatalytic net is made from the porous nano-ceramic material. The composite photocatalyst Zr-BiVO4 is loaded onto activated diatomite and the seashell nano-powder to increase the catalytic area of the photocatalyst, so the degradation rate of organic matters in the sewage by thecomposite photocatalyst Zr-BiVO4 is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an environment-friendly nano-ceramic material. Background technique [0002] Water pollution is one of the serious problems facing the society, and water treatment technologies can be roughly divided into two categories: biological treatment technology and physical and chemical treatment technology. Among them, biological treatment technology is the main process of wastewater purification. With the continuous development of industry, the environmental pollution is becoming more and more serious, and people's requirements for the environment are constantly improving. The physical and biological methods in the traditional water treatment process often cannot obtain satisfactory results. [0003] Photocatalytic oxidation technology is a new water treatment technology that has only appeared in the past 20 years. The application of photocatalytic oxidation in environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01J23/847B01J35/00C04B35/14C04B35/622C04B35/626C04B38/08C02F101/16C02F101/12
CPCC02F9/00C04B35/14C04B35/622C04B35/62605C04B38/08B01J23/8472C02F2305/10C02F2201/322C02F1/725C02F1/74C02F1/32C02F1/001C02F2101/12C02F2101/16C02F2001/007C04B2235/3208C04B2235/95B01J35/39C04B38/0054
Inventor 不公告发明人
Owner SHENGSHIYAOLAN SHENZHEN TECH CO LTD
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