CN109502687B - Photocatalytic water treatment device for continuously degrading organic pollutants in river channel - Google Patents
Photocatalytic water treatment device for continuously degrading organic pollutants in river channel Download PDFInfo
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- CN109502687B CN109502687B CN201811610354.2A CN201811610354A CN109502687B CN 109502687 B CN109502687 B CN 109502687B CN 201811610354 A CN201811610354 A CN 201811610354A CN 109502687 B CN109502687 B CN 109502687B
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
Abstract
The invention discloses a photocatalytic water treatment device for continuously degrading organic pollutants in a river channel, wherein a corrugated plate covered with a photocatalyst is arranged on the outer top surface of a box body, a permanent magnet is arranged on the inner top surface of the box body, an opening is formed in the side surface of a cavity of the box body, the positions of the box body and the corrugated plate are adjusted by utilizing the opening, a liquid film is formed on the surface of the corrugated plate by utilizing the action of wind and waves, the alternative transformation of a new liquid film and an old liquid film is completed, the purpose of continuously removing organic matters in the liquid film is achieved under the irradiation of sunlight, the direction of the box body is adjusted by utilizing the action of a geomagnetic field, so that the inclined surface of the corrugated plate always faces to the north and the south, the sunlight is fully utilized, and the efficiency of removing the organic pollutants by photocatalysis is improved. In addition, the migration rate of current carriers under a magnetic field is improved under the action of the magnetic field of the permanent magnet and the iron box, the recombination probability of electron hole pairs at an interface is reduced, and the photocatalytic efficiency of the whole system is enhanced, so that organic pollutants in a river channel are more effectively degraded.
Description
Technical Field
The invention belongs to the technical field of wastewater or sewage treatment, and particularly relates to a photocatalytic water treatment device.
Background
With the rapid development of the economy of China, the water environment problem of China is increasingly prominent, and the urban and rural water environment is threatened unprecedentedly. The treatment rate of wastewater in China is extremely low, and a large amount of untreated industrial wastewater is directly discharged into rivers, so that the water quality of the rivers is seriously polluted. The excessive application of chemical fertilizers and pesticides causes a large amount of chemical fertilizers and pesticides to flow into river channels along with rainfall or irrigation water, and also become important pollution sources. Therefore, at present, many urban water bodies, especially river water bodies, are not only influenced by eutrophication, but also polluted by industrial wastewater, especially refractory organic matters, and show the characteristic of composite pollution. The ecological environment of the water body deteriorates gradually, and the biodiversity is seriously damaged, so that the normal life of human beings is influenced, and the economic development is restricted, so that the research on repairing or protecting the polluted river water body is urgent.
The treatment difficulty of the riverway water body containing industrial pollutants, particularly refractory organic matters is very high. Because the organic matters which are difficult to degrade in the river water body can not be degraded or mineralized after the general biological treatment, the polluted water body is not suitable for the conventional biological treatment method. The photocatalyst can perform photocatalytic advanced oxidation reaction under the irradiation of ultraviolet light or sunlight to generate strong oxidizing free radicals, and can quickly and selectively oxidize and decompose various toxic and harmful organic pollutants in water until the pollutants are completely mineralized into CO2And H2And O, meanwhile, the photocatalyst has no loss and no secondary pollution, and also has the advantages of high reaction speed, mild reaction conditions and the like, so the photocatalyst is regarded as a water treatment technology with great prospect.
At present, the sewage treatment equipment utilizing photocatalysis advanced oxidation generally adopts a photocatalyst film (such as TiO)2Catalytic membrane) is arranged on the wall surface of the reaction cavity, the ultraviolet lamp is arranged in the reaction cavity, and the air pump is utilized to aerate the bottom of the reaction cavity, so that the flow of sewage in the reaction cavity is realized, and the purification treatment of the sewage in the whole reaction cavity is realized. The flow of the waste water in the reaction chamber is not uniform, so that the photocatalyst film (such as TiO)2Catalytic membrane) wall surface, which causes the sewage treatment efficiency in the reaction chamber to be low, and especially causes the sewage purification effect in the reaction chamber to be poor due to the lack of effective degradation of macromolecular complex organic pollutants; meanwhile, the space occupancy rate of the light film device and the aeration device in the existing photocatalytic advanced oxidation sewage treatment equipment in the reaction cavity is higher, so that the effective sewage treatment capacity is relatively lower. For example, chinese patent No. ZL201610415838.6 discloses a sewage purification reactor, comprising: the shell comprises a shell, a bottom shell arranged at the bottom of the shell and an upper cover arranged at the top of the shell, the bottom shell and the upper cover enclose a sewage treatment reaction cavity, a water inlet close to the bottom shell and a water outlet close to the upper cover are arranged outside the shell, and the water inlet and the water outlet are respectively communicated with the sewage treatment reaction cavity; a photocatalysis advanced oxidation filtering module which is arranged in the sewage treatment reaction cavity and has advanced photocatalysisThe oxidation filtering module comprises a ceramic membrane component, a photocatalytic component and a switch valve control component, wherein the ceramic membrane component is connected with the switch valve component, and the photocatalytic component is supported by the ceramic membrane component; the aeration device is arranged outside the shell and is connected with the switch valve component through a joint component arranged on the bottom shell. In order to improve the sewage treatment efficiency, the ceramic membrane ultrafiltration technology and the photocatalysis advanced oxidation technology are combined in the patent document, but the ceramic ultrafiltration membrane is expensive, and the backwashing consumes energy and is easy to block, so that the equipment investment and maintenance cost are high, the application of the equipment is limited, particularly, a water pressure pump, an air pump and a water suction pump need to continuously provide power, and the equipment cannot be applied to a river water body to remove organic pollution because the power maintenance is difficult in the field.
At present, photocatalytic treatment equipment for organic pollutants in river water bodies is not reported, and a photocatalytic water treatment device for degrading organic pollutants in river water bodies is urgently needed to be developed.
Disclosure of Invention
In view of the above, the present invention provides a photocatalytic water treatment device for degrading organic pollutants in a river water body, which can continuously perform photocatalytic reactions and effectively degrade organic pollutants, and is maintenance-free and requires no additional power.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a photocatalysis water treatment facilities for degrading organic pollutant in river course water, includes the box, the box is confined cuboid cavity the inside top surface of box is fixed with flat permanent magnet be equipped with the trompil on the side of box the outside top surface of box is provided with the buckled plate, the surface load of buckled plate has the photocatalyst the bottom of box still is connected with the soft rope, the other end of soft rope is connected with the heavy thing of weight downwards.
In the photocatalytic water treatment device, the outer surface of the box body is coated with the antirust and anticorrosive coating; alternatively, the box body is made of an antirust and corrosion-resistant material, such as a stainless steel material.
In the above photocatalytic water treatment device, the photocatalyst is a visible light photocatalyst, such as common visible light photocatalyst, for example, bismuth oxyhalide or silver phosphate, and can be supported on the surface of the corrugated plate by sintering or other conventional methods.
In the photocatalytic water treatment device, the corrugated plate is made of graphite.
Similarly, in order to achieve the above object, the present invention may further adopt the following technical solutions:
a photocatalytic water treatment device for degrading organic pollutants in a river water body comprises: a box body and a solar cell panel, wherein,
the box body is a closed cuboid and is made of an iron material;
a flat permanent magnet is adsorbed on the inner top surface of the box body, a storage battery pack is placed on the inner bottom surface of the box body, a cavity is formed in the middle of the interior of the box body, and an opening is formed in the outer surface of the cavity;
the outer top surface of the box body is connected with a corrugated plate, and the surface of the corrugated plate is loaded with a photocatalyst; a solar cell panel is arranged on the side edge outside the box body, the solar cell panel is connected with the storage battery pack through a lead, the anode of the storage battery pack is connected with a carbon rod, the carbon rod is suspended in water, and the cathode of the storage battery pack is connected with the corrugated plate; the bottom of the box body is also connected with a soft rope, and the other end of the soft rope is downwards connected with a falling object.
In the above photocatalytic water treatment device, the photocatalyst is a visible light photocatalyst, such as common visible light photocatalyst, for example, bismuth oxyhalide or silver phosphate, and can be supported on the surface of the corrugated plate by sintering or other conventional methods.
In the photocatalytic water treatment apparatus, the corrugated plate is made of graphite.
In the photocatalytic water treatment device, the solar cell panel can be connected with the box body through the hard rod, and can also be directly fixed in a river channel through the hard rod.
In the photocatalytic water treatment device, the output voltage of the storage battery pack is 6-12V.
In the above photocatalytic water treatment device, the surface of the corrugated plate has corrugations regularly arranged at intervals of upward bulges and downward depressions, and the downward depressions form grooves connected with the bulges and the depressions by inclined surfaces.
In the invention, the corrugated plate covered with the photocatalyst is arranged on the outer top surface of the box body, the permanent magnet is arranged on the inner top surface of the box body, and the side surface of the cavity of the box body is provided with the opening. The positions of the box body and the corrugated plate are adjusted by utilizing the opening hole, so that the water surface of the river channel is just positioned in the middle of the vertical height of the corrugated plate, and thus, the corrugated plate on the top surface of the box body can sink and float up and down under the action of wind and waves, a liquid film is formed on the surface, the alternate conversion of a new liquid film and an old liquid film is completed, and the purpose of continuously removing organic matters in the liquid film is achieved under the irradiation of sunlight; and, utilize the geomagnetic field effect, the permanent magnet drives the box and carries out the direction adjustment to make the recess direction of buckled plate be the east and west orientation all the time, the inclined plane of buckled plate is the north and south all the time, with make full use of sunlight, can improve the efficiency of photocatalytic degradation river course organic pollutant. Furthermore, when the iron box is adopted, the circuit formed by the storage battery pack, the corrugated plate, the box body, water and the carbon rod is arranged, the iron box body can be protected from being corroded, the electrolytic action can be formed on the surface of the corrugated plate, the migration rate of a current carrier under a magnetic field is promoted under the action of a magnetic field formed by the permanent magnet and the iron box body, the recombination probability of an electron hole pair at an interface is reduced, the photocatalytic efficiency of the whole system is enhanced, and organic pollutants in a river channel are effectively degraded.
Compared with the prior art, the invention has the following beneficial technical effects:
1) different from the common photocatalytic reaction device in the prior art in which a photocatalytic film is arranged in a reaction cavity, the device directly performs photocatalytic reaction in a river water body, forms a liquid film on the surface of the photocatalyst through the floating of a corrugated plate and completes the alternate transformation (updating of the liquid film) of a new liquid film and an old liquid film, and achieves the technical effect of continuously removing organic matters in the liquid film under the irradiation of sunlight, thereby overcoming the problems that equipment is complex and cannot be continuously performed in the photocatalytic reaction device in the cavity in the prior art.
2) Different from the common complex sunlight following device in the prior art, the invention can easily realize the direction adjustment of the box body suspended in water and the corrugated plate on the top of the box body through the arrangement of the permanent magnet, so that the inclined surface (catalyst loading surface) of the corrugated plate always faces to the north and the south (facing to the sun) to fully utilize sunlight, thereby improving the photocatalysis efficiency and removing organic pollutants more efficiently.
3) Different from the complicated arrangement of the synergy mechanism in the prior art, the invention utilizes the action of the magnetic field generated by the simple structure arrangement to improve the migration rate of the current carrier, achieves the aim of enhancing the photocatalytic efficiency, has the action of the magnetic field, and can improve the photocatalytic effect by about 2 times.
4) The device has the advantages of simple structure, easy manufacture, low cost, convenient maintenance, no need of providing additional power and suitability for popularization and application.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims, wherein like reference numerals refer to like parts throughout the several views, and wherein like reference numerals refer to like parts throughout the several views.
Drawings
Fig. 1 is a schematic structural diagram of a photocatalytic water treatment device for degrading organic pollutants in a river water body according to a first embodiment of the invention.
Fig. 2 is a schematic structural diagram of a photocatalytic water treatment device for degrading organic pollutants in a river water body according to a second embodiment of the invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings to more clearly understand the technical contents of the present invention.
Example 1
As shown in fig. 1, in an embodiment of the present invention, a first photocatalytic water treatment apparatus for degrading organic pollutants in a river water body includes a tank 1.
The light-emitting diode comprises a box body 1, a flat permanent magnet 2, a corrugated plate 5, a photocatalyst, a soft rope 8 and a falling object, wherein the box body 1 is a closed cuboid cavity, the flat permanent magnet 2 is fixed on the top surface inside the box body 1, one side surface of the box body 1 is provided with a hole 9, the top surface outside the box body 1 is provided with the corrugated plate 5, the surface of the corrugated plate 5 is loaded with the photocatalyst, the bottom of the box body 1 is further connected with the soft rope 8, and the other end of the soft rope 8 is connected with the falling object downwards.
In the above embodiment, the photocatalyst is a visible light photocatalyst, such as common visible light photocatalyst, such as bismuth oxyhalide or silver phosphate, and may be supported on the surface of the corrugated plate 5 by sintering or other conventional methods.
In the embodiment, the outer surface of the box body 1 is coated with the antirust and anticorrosive coating; alternatively, the case 1 is made of a rust-proof and corrosion-resistant material, such as a stainless steel material.
In the above embodiment, the material of the corrugated plate 5 is graphite. The surface of the corrugated plate 5 has corrugations regularly arranged with upward bulges and downward depressions at intervals, and the downward depressions form grooves connected with the bulges and depressions by inclined planes.
When using above-mentioned photocatalysis water treatment facilities, will connect the heavy thing of subsiding on the soft rope 8 and place the river bottom in, box 1 suspension is on the river course, add or reduce the stone in to box 1 through trompil 9, adjust the degree of depth of box 1 at the river course surface of water suspension, make the river course surface of water just in time be in the middle part of 5 vertical height of buckled plate, utilize the effect of wind and wave, it floats to drive buckled plate 5 upper and lower heavy, form the alternative transform of liquid film and completion new and old liquid film on the surface of buckled plate 5, reach the purpose of continuously getting rid of organic matter in the liquid film under the illumination of sunlight. Moreover, because the interior top surface at box 1 is fixed with permanent magnet 2, and permanent magnet 2's south north pole can point to south north pole forever under the effect of geomagnetic field, consequently, permanent magnet 2 can drive box 1 and adjust to make the recess direction of buckled plate 5 be the east and west orientation all the time, the inclined plane of buckled plate 5 can be towards north and south all the time like this, can make full use of sunlight, thereby improve the water treatment efficiency of photocatalysis degradation river course organic pollutant.
Example 2
As shown in fig. 2, in an embodiment of the present invention, a second photocatalytic water treatment apparatus for degrading organic pollutants in a river water body includes a tank 1 and a solar panel 6.
Wherein, the box body 1 is a closed cuboid box body and is made of iron materials.
Inside the box body 1, a flat permanent magnet 2 is adsorbed on the top surface, a storage battery 3 is placed on the bottom surface, and a cavity 4 is arranged in the middle.
An opening 9 is provided on one side of the case 1, and the opening 9 is located on the outer surface of the cavity 4, not on the outer surface of the portion where the permanent magnet 2 or the battery pack 3 is located.
The corrugated plate 5 is connected to the outer top surface of the box body 1, and the surface of the corrugated plate 5 is loaded with photocatalyst.
In the outside of box 1, be provided with solar cell panel 6 above the side of box 1, solar cell panel 6 passes through the wire with storage battery 3 and is connected, and carbon-point 7 has been connect in storage battery 3 anodal (positive pole), and carbon-point 7 hangs in aqueous, and storage battery 3's negative pole (negative pole) is connected with buckled plate 5.
The bottom of the box body 1 is also connected with a soft rope 8 outside the box body 1, and the other end of the soft rope 8 is connected with a falling object.
In the above embodiment, the photocatalyst is a visible light photocatalyst, such as common visible light photocatalyst, such as bismuth oxyhalide or silver phosphate, and may be supported on the surface of the corrugated plate 5 by sintering or other conventional methods.
In the above embodiment, the material of the corrugated plate 5 is graphite. The surface of the corrugated plate 5 has corrugations regularly arranged with upward bulges and downward depressions at intervals, and the downward depressions form grooves connected with the bulges and depressions by inclined planes.
In the above embodiment, the solar cell panel 6 may be connected to the box 1 through a hard rod, or may be directly fixed to a river channel through a hard rod.
In the above embodiment, the output voltage of the battery pack 3 is 6 to 12V. The battery pack 3 includes a battery and a transformer, and the output voltage is regulated by the transformer.
When using above-mentioned photocatalysis water treatment facilities, will connect the heavy thing that sinks on the soft rope 8 and place the river bottom in, box 1 suspension is on the river course, and solar cell panel 6 places the river course surface of water in more than, adds or reduces the stone through trompil 9 in to box 1, adjusts the box 1 at the floated degree of depth of river course surface of water, makes the river course surface of water just in time be in the middle part of 5 vertical height of buckled plate. The corrugated plate 5 is driven to sink and float up and down by the action of wind and waves, a liquid film is formed on the surface, the alternate transformation of a new liquid film and an old liquid film is completed, and the aim of continuously removing organic matters in the liquid film is fulfilled under the irradiation of sunlight. Simultaneously, because the interior top surface at box 1 is fixed with permanent magnet 2, and permanent magnet 2's south north pole can point to south north pole forever under the effect of geomagnetic field, consequently, permanent magnet 2 can drive box 1 and adjust to make corrugated plate 5's recess direction be the east and west direction all the time, corrugated plate 5's inclined plane can be towards north and south all the time like this, can make full use of sunlight. In addition, as the corrugated plate 5 is connected with the surface of the box body 1, and the storage battery 3, the corrugated plate 5, the box body 1, water and carbon rods form a circuit, on one hand, the iron box body 1 can be protected from being corroded, so that the water treatment device can be used in a river channel for a long time; on the other hand, electrons flow through the corrugated plate 5 and the box body 1 in the current, the electrolysis effect is formed on the surface of the corrugated plate 5, the migration rate of current carriers under a magnetic field can be improved under the action of the magnetic field formed by the permanent magnet 2 and the iron box body 1, the recombination probability of electron hole pairs at the interface is further reduced, the photocatalytic efficiency of the whole system is enhanced, and organic pollutants in a river channel are degraded more effectively.
The device has the advantages of simple structure, easy manufacture, low cost, convenient maintenance, no need of providing additional power and suitability for popularization and application.
It will thus be seen that the objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments may be modified without departing from the principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the claims.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A photocatalytic water treatment device for degrading organic pollutants in a river water body comprises a box body and is characterized in that the box body is a closed cuboid cavity, a flat-plate-shaped permanent magnet is fixed on the top surface inside the box body, a side surface of the box body is provided with an opening, a corrugated plate is arranged on the top surface outside the box body, a photocatalyst is loaded on the surface of the corrugated plate, the bottom of the box body is also connected with a soft rope, and the other end of the soft rope is downwards connected with a pendant and sinker; when the photocatalytic water treatment device is arranged in the riverway, the water surface of the riverway is positioned in the middle of the vertical height of the corrugated plate.
2. The photocatalytic water treatment apparatus as set forth in claim 1, wherein the outer surface of the tank body is coated with a rust-proof and corrosion-proof coating.
3. The photocatalytic water treatment device as recited in claim 1, wherein the tank is made of a stainless material.
4. The photocatalytic water treatment device of claim 1, wherein the photocatalyst is a bismuth oxyhalide or silver phosphate photocatalyst.
5. The photocatalytic water treatment device of claim 1, wherein the corrugated plates are made of graphite.
6. A photocatalysis water treatment device for degrading organic pollutants in a river water body is characterized by comprising a box body and a solar cell panel, wherein,
the box body is a closed cuboid and is made of an iron material;
a flat permanent magnet is adsorbed on the inner top surface of the box body, a storage battery pack is placed on the inner bottom surface of the box body, a cavity is formed in the middle of the interior of the box body, and an opening is formed in the outer surface of the cavity;
the outer top surface of the box body is connected with a corrugated plate, the corrugated plate is made of graphite, and the surface of the corrugated plate is loaded with a photocatalyst; a solar cell panel is arranged on the side edge outside the box body, the solar cell panel is connected with the storage battery pack through a lead, the anode of the storage battery pack is connected with a carbon rod, the carbon rod is suspended in water, and the cathode of the storage battery pack is connected with the corrugated plate; the bottom of the box body is also connected with a soft rope, and the other end of the soft rope is downwards connected with a falling object;
when the photocatalytic water treatment device is arranged in the riverway, the water surface of the riverway is positioned in the middle of the vertical height of the corrugated plate.
7. The photocatalytic water treatment device of claim 6, wherein the photocatalyst is a bismuth oxyhalide or silver phosphate photocatalyst.
8. The photocatalytic water treatment device according to claim 6, wherein the solar cell panel is connected to the tank body by a hard rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610354.2A CN109502687B (en) | 2018-12-27 | 2018-12-27 | Photocatalytic water treatment device for continuously degrading organic pollutants in river channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610354.2A CN109502687B (en) | 2018-12-27 | 2018-12-27 | Photocatalytic water treatment device for continuously degrading organic pollutants in river channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109502687A CN109502687A (en) | 2019-03-22 |
| CN109502687B true CN109502687B (en) | 2021-09-07 |
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