CN212334918U - Overflow type photocatalysis type artificial wetland sewage treatment device - Google Patents
Overflow type photocatalysis type artificial wetland sewage treatment device Download PDFInfo
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- CN212334918U CN212334918U CN201921743359.2U CN201921743359U CN212334918U CN 212334918 U CN212334918 U CN 212334918U CN 201921743359 U CN201921743359 U CN 201921743359U CN 212334918 U CN212334918 U CN 212334918U
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Abstract
The utility model relates to an overflow formula photocatalysis type constructed wetland sewage treatment plant. The utility model aims at providing an overflow formula photocatalysis type constructed wetland sewage treatment plant to get rid of the non-biodegradable organic matter of dissolubility in the waste water. The technical scheme of the utility model is that: the device is provided with a photocatalytic reaction area and an artificial wet area; a water inlet mechanism is arranged below the photocatalytic reaction zone, a water inlet is arranged at the lower end of the water inlet mechanism, the upper end of the water inlet mechanism is communicated with the lower end of the photocatalytic reaction zone, and the water inlet mechanism and the photocatalytic reaction zone are separated by a water distribution plate I; a photocatalytic type filler is arranged in the photocatalytic reaction area, and a light source for enabling the photocatalytic type filler to perform photocatalytic reaction is arranged outside the photocatalytic reaction area; the artificial wet area is sequentially provided with an artificial wet land filler, a water distribution plate II and a communicating area from bottom to top, the communicating area is arranged at the upper part of the photocatalytic reaction area, and the lower part of the side wall of the artificial wet area is provided with a water outlet. The utility model is suitable for a sewage treatment technology field.
Description
Technical Field
The utility model relates to an overflow formula photocatalysis type constructed wetland sewage treatment plant. Is applicable to the technical field of sewage treatment.
Background
Along with the development of cities, the discharge amount of industrial wastewater and domestic sewage is increasing day by day, in order to ensure the coordinated development of economic construction and environmental protection, sewage treatment plants are built in various places in large quantity, the sewage is collected and enters the urban sewage treatment plants for treatment and then is discharged into surface water, and most tail water implements the primary A standard of pollutant discharge standard of urban sewage treatment plants (GB18918-2002), wherein the COD is less than 50mg/L, and the BOD is less than 50mg/L5Less than 10mg/L, while the COD of V-class water in the quality Standard of Water Environment on the Earth (GB3838-2002) is less than 40mg/L, BOD5And when the concentration is less than 10mg/L, tail water discharged after reaching the standard is still poor V-class water, so that the quality of regional water environment is damaged. Therefore, the advanced treatment of the tail water is of great significance for improving the water environment quality.
The artificial wetland is widely applied to purification and restoration of water quality, non-point source pollution control, early rainfall treatment and advanced treatment of tail water of municipal sewage treatment plants. However, most of the tail water treated by the sewage biochemical process is soluble non-biodegradable organic matters which are difficult to degrade and remove by means of biological treatment technologies such as artificial wetlands and the like. Therefore, how to improve the application of the artificial wetland in the advanced treatment of the tail water becomes a key point of attention in the water treatment field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the problems, the overflow type photocatalysis artificial wetland sewage treatment device is provided to remove the soluble non-biodegradable organic matters in the wastewater.
The utility model adopts the technical proposal that: the utility model provides an overflow formula photocatalysis type constructed wetland sewage treatment plant which characterized in that: a photocatalytic reaction area and an artificial wet area are provided;
a water inlet mechanism is arranged below the photocatalytic reaction zone, a water inlet is arranged at the lower end of the water inlet mechanism, the upper end of the water inlet mechanism is communicated with the lower end of the photocatalytic reaction zone, and the water inlet mechanism and the photocatalytic reaction zone are separated by a water distribution plate I;
a photocatalytic type filler is arranged in the photocatalytic reaction area, and a light source which emits light energy to enable the photocatalytic type filler to perform photocatalytic reaction is arranged outside the photocatalytic reaction area;
the artificial wet area is sequentially provided with an artificial wet land filler, a water distribution plate II and a communication area from bottom to top, the communication area is connected with the upper part of the photocatalytic reaction area, and the lower part of the side wall of the artificial wet area is provided with a water outlet.
The inside light source room that is equipped with of photocatalysis reaction zone places in the light source room the light source, light source room lateral wall is the printing opacity position.
The light-transmitting part adopts an annular quartz glass partition plate.
The artificial wetland filler comprises a substrate and microorganisms loaded on the substrate, wherein the substrate is selected from graphite particles, activated carbon particles, volcanic rock, zeolite, ceramsite and gravel.
Wetland plants are planted on the artificial wetland filler.
The photocatalytic reaction area and the artificial wet area are both arranged in the reaction container, and the inside of the reaction container is divided into the photocatalytic reaction area positioned in the center and the artificial wet area positioned on the periphery by the annular partition plate.
A sewage treatment method of the overflow type photocatalysis type artificial wetland sewage treatment device is characterized in that:
the wastewater uniformly enters a photocatalytic reaction zone from a water inlet through a water distribution plate I, and the photocatalytic filler degrades soluble non-biodegradable organic matters in the wastewater into biodegradable micromolecular organic matters under the irradiation of a light source;
after the wastewater is filled in the photocatalytic reaction area, the wastewater overflows and enters the artificial wet area, and micromolecular organic matters are generated after photocatalytic degradation and are oxidized and decomposed under the action of microorganisms on the artificial wetland filler;
the treated wastewater flows out through a water outlet at the lower part of the artificial wetland area.
The utility model has the advantages that: the utility model discloses be in the same place the coupling of photocatalysis technique and constructed wetland technique, utilize the characteristic of the non-selective degradation pollutant of photocatalysis, degrade the non-biodegradable organic matter of solubility for biodegradable's micro molecule organic matter in sewage treatment plant tail water earlier, then get into constructed wetland and carry out biodegradation, reinforce the getting rid of difficult degradation pollutant.
The utility model discloses photocatalysis reaction area and artifical wet area independent setting have avoided the influence of ultraviolet ray to constructed wetland filler surface microorganism, the living environment who remains stable.
The utility model discloses well waste water flows downwards perpendicularly in constructed wetland packs, forms unsaturated rivers, has improved the transfer efficiency of oxygen in to the packing layer, has improved the pollutant greatly and has got rid of the effect.
The utility model can effectively remove the toxic substances in the tail water of the sewage treatment plant, simultaneously the constructed wetland has rich biological diversity, the indigenous microorganisms of the tail water are recovered, and the self-purification capacity of the tail water is improved; the processing device is simple in structure, convenient to assemble and high in practicability.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a top view of the embodiment.
Detailed Description
As shown in fig. 1 and 2, the present embodiment is an overflow photocatalytic artificial wetland sewage treatment device, which comprises a reaction vessel 12, wherein the central position inside the reaction vessel 12 is divided into a photocatalytic reaction zone 3 located in the central area and an artificial wet area 5 located around the photocatalytic reaction zone by an annular partition 10.
In the embodiment, a funnel-shaped water inlet mechanism is arranged below the photocatalytic reaction zone 3, the lower end of the water inlet mechanism is provided with a water inlet 1, the upper end of the water inlet mechanism is communicated with the lower end of the photocatalytic reaction zone 3, and the water inlet mechanism and the photocatalytic reaction zone 3 are separated by a water distribution plate I2.
In the embodiment, a photocatalytic type filler 7 is arranged in the photocatalytic reaction area 3, a light source chamber 14 is arranged at the central position in the photocatalytic reaction area 3, the side wall of the light source chamber 14 is a light transmission part, an annular quartz glass partition plate 9 is adopted, and a light source 13 is arranged in the light source chamber 14. The light emitted by the light source 13 can enter the photocatalytic reaction zone 3 through the annular quartz glass partition plate 9, so that the photocatalytic type filler 7 in the photocatalytic reaction zone 3 performs a photocatalytic reaction under the action of the light emitted by the light source 13.
In the embodiment, an artificial wetland filler 8, a water distribution plate II 4 and a communication area are sequentially arranged in the artificial wet area 5 from bottom to top, wetland plants 11 are planted on the artificial wetland filler 8, and the communication area is communicated with the upper area of the photocatalytic filler 7 in the photocatalytic reaction area 3. In this example, a water outlet 6 is arranged at the lower part of the side wall of the artificial wet area 5.
The artificial wetland filler 8 in the embodiment comprises a substrate and microorganisms loaded on the substrate, and the substrate can be selected from graphite particles, activated carbon particles, volcanic rock, zeolite, ceramsite, gravel and the like.
In this example, the photocatalytic filler 7 is a semiconductor material attached to a substrate material, wherein the semiconductor material can be titanium dioxide, zinc oxide, tungsten trioxide, molybdenum sulfide, bismuth oxybromide, or the like, and the substrate material can be graphite particles, activated carbon particles, vesuvianite, zeolite, ceramsite, gravel, or the like.
The light source 13 is determined according to the properties of the semiconductor material of the photocatalytic type filler 7. When the semiconductor material used for the photocatalytic type filler 7 is a visible light photocatalyst such as bismuth oxybromide, the light source 13 can use a visible light source such as sunlight and a xenon lamp; when the semiconductor material used for the photocatalytic type filler 7 is an ultraviolet photocatalyst such as titanium dioxide, an ultraviolet light source such as a mercury lamp is used as the light source 13.
In this embodiment, the water inlet 1 is arranged at the bottom of the photocatalytic reaction area 3, and the water outlet 6 is arranged at the bottom of the artificial wet area 5, so that wastewater vertically flows downwards in the artificial wet land filler 8 to form unsaturated water flow, thereby improving the transfer efficiency of oxygen to the filler layer and greatly improving the pollutant removal effect.
In the reaction vessel 12 of this embodiment, a water distribution plate I2 and a water distribution plate II 4 for promoting uniform distribution of the feed water are installed. The water distribution plate I2 is arranged at the bottom of the photocatalytic reaction area 3 and is higher than the water inlet 1, so that wastewater can uniformly enter the photocatalytic reaction area 3. The water distribution plate II 4 is arranged above the artificial wetland filler 8, so that the wastewater can uniformly enter the area where the artificial wetland filler 8 is located.
The sewage treatment method of the embodiment is as follows:
the wastewater uniformly enters the photocatalytic reaction zone 3 from the water inlet 1 through the first water distribution plate 2, and the photocatalytic filler 7 can degrade soluble non-biodegradable organic matters in the wastewater into biodegradable micromolecular organic matters under the irradiation of the light source 13;
the wastewater overflows after being filled in the photocatalytic reaction zone 3, uniformly enters the artificial wet area 5 through the second water distribution plate 4, and is subjected to photocatalytic degradation to generate micromolecular organic matters which are subjected to oxidative decomposition under the action of microorganisms on the artificial wetland filler 8;
finally, the treated wastewater flows out of the reaction device 12 through the water outlet 6.
The present invention is not particularly limited in terms of the shape, volume, and the like of the reaction vessel 12, and is preferably a cylindrical reaction vessel 12. The water inlet 1 and the water outlet 6 are generally circular holes, and the size thereof can be designed according to the wastewater treatment amount, the flow rate, and the like.
The annular partition plate 10 is used as the partition between the photocatalytic reaction area 3 and the artificial wet area 5, so that ultraviolet rays are prevented from entering the artificial wet area 3, the influence on microorganisms on the surface of the artificial wet land filler 7 is eliminated, and the stable living environment of the microorganisms is maintained.
In this embodiment, the number and variety of the wetland plants 11 are not particularly limited, and the wetland plants 11 may be gramineae or astraceae. The wetland plant 11 is preferably one or more of ryegrass, leersia hexandra, cord grass, calamus and reed, more preferably ryegrass or leersia hexandra. The wetland plants 11 planted in the reaction vessel 12 of this embodiment are preferably plants which have been cultured in a hydroponic culture for a certain period of time from germination to transplantation of the reaction vessel 12, and the transplanted wetland plants 11 preferably grow uniformly, depending on the growth conditions of the wetland plants 11.
Claims (6)
1. The utility model provides an overflow formula photocatalysis type constructed wetland sewage treatment plant which characterized in that: a photocatalytic reaction area (3) and an artificial wet area (5) are provided;
a water inlet mechanism is arranged below the photocatalytic reaction zone (3), a water inlet (1) is arranged at the lower end of the water inlet mechanism, the upper end of the water inlet mechanism is communicated with the lower end of the photocatalytic reaction zone (3), and the water inlet mechanism and the photocatalytic reaction zone (3) are separated by a water distribution plate I (2);
a photocatalytic type filler (7) is arranged in the photocatalytic reaction region (3), and a light source (13) which emits light energy to enable the photocatalytic type filler (7) to perform photocatalytic reaction on the photocatalytic reaction region (3) is arranged outside the photocatalytic reaction region (3);
the artificial wet area (5) is internally provided with an artificial wet land filler (8), a water distribution plate II (4) and a communicating area from bottom to top in sequence, the communicating area is arranged at the upper part of the photocatalytic reaction area (3), and the lower part of the side wall of the artificial wet area (5) is provided with a water outlet (6).
2. The overflow photocatalytic artificial wetland sewage treatment plant of claim 1, wherein: light source room (14) are equipped with in photocatalysis reaction area (3), place in light source room (14) light source (13), light source room (14) lateral wall is the printing opacity position.
3. The overflow photocatalytic artificial wetland sewage treatment plant of claim 2, wherein: the light-transmitting part adopts an annular quartz glass partition plate (9).
4. The overflow photocatalytic artificial wetland sewage treatment plant of claim 1, wherein: the artificial wetland filler (8) comprises a substrate and microorganisms loaded on the substrate, wherein the substrate is selected from graphite particles, activated carbon particles, volcanic rock, zeolite, ceramsite and gravel.
5. The overflow photocatalytic artificial wetland sewage treatment plant of claim 1, wherein: wetland plants (11) are planted on the artificial wetland filler (8).
6. The overflow photocatalytic artificial wetland sewage treatment plant of claim 1, wherein: the photocatalytic reaction area (3) and the artificial wet area (5) are both arranged in a reaction container (12), and the inside of the reaction container (12) is divided into the photocatalytic reaction area (3) positioned at the center and the artificial wet area (5) positioned at the periphery through an annular partition plate (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921743359.2U CN212334918U (en) | 2019-10-17 | 2019-10-17 | Overflow type photocatalysis type artificial wetland sewage treatment device |
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| CN201921743359.2U CN212334918U (en) | 2019-10-17 | 2019-10-17 | Overflow type photocatalysis type artificial wetland sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655276A (en) * | 2019-10-17 | 2020-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Overflow type photocatalysis type artificial wetland sewage treatment device and method |
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2019
- 2019-10-17 CN CN201921743359.2U patent/CN212334918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655276A (en) * | 2019-10-17 | 2020-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Overflow type photocatalysis type artificial wetland sewage treatment device and method |
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