CN212246304U - Advanced sewage treatment device based on photocatalytic reaction - Google Patents
Advanced sewage treatment device based on photocatalytic reaction Download PDFInfo
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- CN212246304U CN212246304U CN202020833808.9U CN202020833808U CN212246304U CN 212246304 U CN212246304 U CN 212246304U CN 202020833808 U CN202020833808 U CN 202020833808U CN 212246304 U CN212246304 U CN 212246304U
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Abstract
The utility model discloses a sewage advanced treatment unit based on photocatalytic reaction, include: the device comprises a reaction tower, a water inlet pipe, a diversion cone, a light source, a sleeve, suspended filler, a light-contact coal coating, an air pump, a jet aeration pipe, a filler blocking net and a water outlet pipe; a water inlet pipe and a water outlet pipe are correspondingly connected above the left side wall and the right side wall of the reaction tower, the sleeve is fixed on a central axis in the reaction tower, the air pump is arranged above the reaction tower, and the jet aeration pipe is arranged in the sleeve; the bottom wall of the reaction tower is connected with a flow guide cone, the top wall of the reaction tower is connected with a plurality of light sources, the plurality of light sources are arranged along the circumferential direction and are positioned between the sleeve and the inner wall of the reaction tower, and the filler blocking net is fixed on the inner wall of the reaction tower; the reaction tower is filled with suspended fillers, and the outer surface of the suspended fillers is attached with a light-contact coal coating. The utility model discloses on the basis that improves the photocatalysis effect, further remove pollutants such as COD, BOD, ammonia nitrogen in the sewage.
Description
Technical Field
The utility model belongs to the sewage treatment field provides a sewage advanced treatment unit based on photocatalytic reaction very much.
Background
The control of pollutant emission is the key to improve the water environment quality of China and improve the quality of life of residents. With the development of society, the discharge amount of sewage is continuously increased, the environment protection situation is more severe, and the discharge standard is improved. Due to the potential of the conventional activated sludge process, the development requirement of the field of water treatment in the future cannot be met, so that the development of a suitable advanced sewage treatment technology is not slow enough.
The function of the photocatalysis technology in the field of water treatment is proved by a large number of experiments, and the practical application of engineering is less. At present, two main using modes of the photocatalyst are provided, firstly, the catalyst is loaded on the inner surface of a reactor, but the contact surface of the catalyst and liquid is limited due to the limitation of the surface area of a carrier, and the catalytic effect is influenced; secondly, the catalyst is mixed with the sewage, the method increases the contact area of the catalyst and the liquid, and improves the catalytic effect, but the recovery and the cyclic utilization of the catalyst are very difficult.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a further treatment effeciency that improves the pollutant on sewage treatment plant secondary treatment's basis, provide a sewage advanced treatment unit based on photocatalytic reaction, can effectively solve above-mentioned problem.
The technical scheme of the utility model is that: advanced wastewater treatment device based on photocatalytic reaction includes: the device comprises a reaction tower 1, a water inlet pipe 2, a diversion cone 3, a light source 4, a sleeve 5, a suspended filler 6, a light contact coal coating 7, an air pump 8, a jet aeration pipe 9, a filler blocking net 10 and a water outlet pipe 11; a water inlet pipe 2 and a water outlet pipe 11 are correspondingly connected above the left side wall and the right side wall of the reaction tower 1, and the horizontal height of the water outlet pipe 11 is lower than that of the water inlet pipe 2; the sleeve 5 is fixed on the central axis in the reaction tower 1, the air pump 8 is arranged above the reaction tower 1, the jet aeration pipe 9 is arranged in the sleeve 5, and the upper end of the jet aeration pipe is connected with the air pump 8; the bottom wall of the reaction tower 1 is connected with a flow guide cone 3, the top wall of the reaction tower 1 is connected with a plurality of light sources 4, and the plurality of light sources 4 are circumferentially arranged and positioned between the sleeve 5 and the inner wall of the reaction tower 1; the packing blocking net 10 is fixed on the inner wall of the reaction tower 1, and the horizontal height of the packing blocking net 10 is positioned between the horizontal height of the water outlet pipe 11 and the top of the sleeve 5; the reactor is characterized in that suspended fillers 6 are filled in the reactor 1 at a position below the level of a filler barrier net 10, and a light contact coal coating 7 is attached to the outer surface of each suspended filler 6.
Further, the upper side and the lower side of the periphery of the sleeve 5 are respectively provided with a metal sleeve 12 in a hooped mode, and two sides of the metal sleeve 12 are respectively welded on the inner wall of the reaction tower 1 through connecting rods 13.
Further, the aeration rate of the jet aeration pipe 9 is 0.1-0.5m3/h。
Furthermore, the suspension filler 6 is made of polypropylene and is spherical, the diameter of the filler is 1.5-2cm, the density of the suspension filler is 0.95-1.05 after the light contact coal coating 7 is loaded, and the filling ratio is 15% -30%.
Further, the light contact coal coating 7 is made of nano titanium dioxide or modified nano titanium dioxide.
Further, the light sources 4 are vertically connected to the top wall of the reaction tower 1, the number of the light sources is six, and the six light sources 4 are uniformly distributed along the circumferential direction; the light source 4 adopts an ultraviolet lamp, and the power is 50-200 w.
Further, the sleeve 5 is made of organic glass.
The utility model discloses following profitable effect has:
the utility model discloses to sewage treatment plant effluent design, on the basis that improves the photocatalysis effect, further remove pollutants such as COD, BOD, ammonia nitrogen in the sewage, satisfy sewage treatment plant and carry the mark and reform transform the demand.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a reaction tower; 2. a water inlet pipe; 3. a flow guide cone; 4. a light source; 5. a sleeve; 6. suspending the filler; 7. a light-contact coal coating; 8. an air pump; 9. a jet aeration pipe; 10. a filler barrier net; 11. a water outlet pipe; 12. a metal sleeve; 13. a connecting rod.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the advanced wastewater treatment device based on photocatalytic reaction comprises: the device comprises a reaction tower 1, a water inlet pipe 2, a diversion cone 3, a light source 4, a sleeve 5, a suspended filler 6, a light contact coal coating 7, an air pump 8, a jet aeration pipe 9, a filler blocking net 10 and a water outlet pipe 11.
A water inlet pipe 2 and a water outlet pipe 11 are correspondingly connected above the left side wall and the right side wall of the reaction tower 1, and the horizontal height of the water outlet pipe 11 is lower than that of the water inlet pipe 2; the sleeve 5 is made of organic glass and fixed on the central axis in the reaction tower 1, the air pump 8 is arranged above the reaction tower 1, the jet aeration pipe 9 is arranged in the sleeve 5, and the upper end of the jet aeration pipe is connected with the air pump 8; the bottom wall of the reaction tower 1 is connected with a diversion cone 3, the top wall of the reaction tower 1 is connected with six light sources 4, the light sources 4 are vertically connected to the top wall of the reaction tower 1, and the six light sources 4 are uniformly arranged along the circumferential direction and are positioned between the sleeve 5 and the inner wall of the reaction tower 1; the packing blocking net 10 is fixed on the inner wall of the reaction tower 1, and the horizontal height of the packing blocking net 10 is positioned between the horizontal height of the water outlet pipe 11 and the top of the sleeve 5; the suspended filler 6 is filled in the reaction tower 1 at a position below the level of the filler barrier net 10, and the outer surface of the suspended filler 6 is attached with the light contact coal coating 7.
In the embodiment of the utility model, 5 periphery upsides and downside hoops respectively and are equipped with metal sleeve 12, the welding is passed through connecting rod 13 respectively on 1 inner wall of reaction tower in metal sleeve 12 both sides.
In a certain sewage treatment plant, the original sewage treatment process is an oxidation ditch method, and the effluent design standard is the secondary standard of pollutant discharge standard of urban sewage treatment plant (GB 18918-2002). The effluent quality COD is 60-75mg/L, and the ammonia nitrogen is 14-23 mg/L. The sewage treatment plant is improved in standard, a sewage advanced treatment method is adopted, and a sewage advanced treatment device is configured in the project. Parameters are as follows: the aeration rate is 0.2m3H; the filling ratio is 20%; the hydraulic retention time is 50 min; the light source is a 100w ultraviolet lamp; the photocatalyst is nanometer titanium dioxide.
After the device is arranged in a secondary sedimentation tank to output water, sewage enters a reaction tower 1 through a water inlet pipe 2, and is completely mixed with the sewage and the suspended filler 6 in the tank under the action of a jet aeration pipe 9 to form a circular flow inside and outside a sleeve 5; the photocatalyst is loaded on the surface of the suspended filler 6, and under the irradiation of the ultraviolet lamp light source 4, hydroxyl radicals and superoxide anions are generated to decompose organic matters in the sewage, and the oxygen content in the sewage can be increased by aeration, so that the number of the superoxide anions is increased, and the photocatalytic efficiency is improved. The packing blocking net 10 can effectively block the drainage outlet from being blocked by the packing. The photocatalytic reaction time is 50min, and the treated sewage flows out of the water outlet pipe 11.
Through the application of the advanced wastewater treatment device, the final effluent quality COD of the plant is 38-52mg/L, and the ammonia nitrogen is 5-8mg/L, so that the first-class B standard of pollutant discharge Standard of urban wastewater treatment plant (GB18918-2002) is met.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. Advanced wastewater treatment device based on photocatalytic reaction, its characterized in that includes: the device comprises a reaction tower (1), a water inlet pipe (2), a flow guide cone (3), a light source (4), a sleeve (5), a suspended filler (6), a light contact coal coating (7), an air pump (8), a jet aeration pipe (9), a filler blocking net (10) and a water outlet pipe (11); a water inlet pipe (2) and a water outlet pipe (11) are correspondingly connected above the left side wall and the right side wall of the reaction tower (1), and the horizontal height of the water outlet pipe (11) is lower than that of the water inlet pipe (2); the sleeve (5) is fixed on the central axis in the reaction tower (1), the air pump (8) is arranged above the reaction tower (1), the jet aeration pipe (9) is arranged in the sleeve (5), and the upper end of the jet aeration pipe is connected with the air pump (8); the bottom wall of the reaction tower (1) is connected with a flow guide cone (3), the top wall of the reaction tower (1) is connected with a plurality of light sources (4), and the light sources (4) are circumferentially arranged and positioned between the sleeve (5) and the inner wall of the reaction tower (1); the packing blocking net (10) is fixed on the inner wall of the reaction tower (1), and the horizontal height of the packing blocking net (10) is positioned between the horizontal height of the water outlet pipe (11) and the top of the sleeve (5); the reactor is characterized in that suspended fillers (6) are filled in the reaction tower (1) at a position below the level of the filler blocking net (10), and a light-contact coal coating (7) is attached to the outer surface of each suspended filler (6).
2. The advanced wastewater treatment device based on photocatalytic reaction as claimed in claim 1, wherein the upper and lower sides of the periphery of the sleeve (5) are respectively hooped with a metal sleeve (12), and both sides of the metal sleeve (12) are respectively welded on the inner wall of the reaction tower (1) through connecting rods (13).
3. The advanced wastewater treatment apparatus based on photocatalytic reaction as set forth in claim 1, wherein the aeration amount of the jet aeration pipe (9) is 0.1-0.5m3/h。
4. The advanced wastewater treatment device based on photocatalytic reaction as claimed in claim 1, wherein the suspended filler (6) is made of polypropylene and is spherical, the diameter of the filler is 1.5-2cm, the density of the filler is 0.95-1.05 after the photocatalyst coating (7) is loaded, and the filling ratio is 15-30%.
5. The advanced wastewater treatment device based on photocatalytic reaction as claimed in claim 1, wherein the photocatalytic coal coating (7) is made of nano titanium dioxide or modified nano titanium dioxide.
6. The advanced wastewater treatment device based on photocatalytic reaction as claimed in claim 1, wherein the light sources (4) are vertically connected to the top wall of the reaction tower (1) and are six in number, and the six light sources (4) are uniformly distributed along the circumferential direction; the light source (4) adopts an ultraviolet lamp, and the power is 50-200 w.
7. The advanced wastewater treatment plant based on photocatalytic reaction according to claim 1, characterized in that the sleeve (5) is made of organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020833808.9U CN212246304U (en) | 2020-05-19 | 2020-05-19 | Advanced sewage treatment device based on photocatalytic reaction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020833808.9U CN212246304U (en) | 2020-05-19 | 2020-05-19 | Advanced sewage treatment device based on photocatalytic reaction |
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| Publication Number | Publication Date |
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| CN212246304U true CN212246304U (en) | 2020-12-29 |
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| CN202020833808.9U Active CN212246304U (en) | 2020-05-19 | 2020-05-19 | Advanced sewage treatment device based on photocatalytic reaction |
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