Coking wastewater treatment device based on photocatalytic reaction

Abstract

The utility model discloses a coking wastewater treatment device based on photocatalytic reaction. The coking wastewater treatment device based on photocatalytic reaction comprises a water bearing plate and a water distribution pipe. The water bearing plate is provided with a water bearing groove, and the groove bottom of the water bearing groove is inclined. The water distribution pipe is provided with a plurality of water outlets arranged at intervals in the axis direction of the water distribution pipe, the water distribution pipe is located in the water bearing tank and close to the high position of the tank bottom of the water bearing tank, and the water outlets face the low position of the tank bottom. The plurality of water outlets arranged at intervals are distributed along the axis of the water distribution pipe, and all parts on the tank bottom of the water bearing tank are on the same plane, so that the coking wastewater in the plurality of water outlets can be sequentially output towards the lower part of the tank bottom along the axis of the water distribution pipe, and flows to the lower part of the tank bottom under the action of gravity; therefore, the wastewater in the water distribution pipe can be uniformly distributed at the bottom of the water bearing tank, the photocatalytic reaction area of the coking wastewater is increased, the contact time of the coking wastewater and light is prolonged, the photocatalytic reaction is promoted, and the efficiency of degrading the coking wastewater by the photocatalytic reaction is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of wastewater treatment, and specifically relates to a coking wastewater treatment device based on photocatalytic reaction. Background Art

[0002] For every ton of coke produced by a coking plant, about 0.25m 3 Up to 0.50m 3 Coking wastewater containing harmful substances such as phenol, benzene, tar, cyanide, sulfide and pyridine is usually called phenolic wastewater. Calculated by the coke consumed per ton of steel and the wastewater generated in the corresponding coke production process, large steel joint ventures produce about 0.1 tons of coking wastewater per ton of steel, while small and medium-sized steel enterprises produce much more than 0.1 tons of coking wastewater per ton of steel.

[0003] With the development of my country's steel industry, the scale of coking has been continuously expanded, the discharge of coking wastewater has increased exponentially, and the pollution intensity has also become increasingly severe.

[0004] Photocatalytic oxidation technology is an emerging treatment technology for complex organic water bodies in recent years. The principle of photocatalytic technology is that the free electrons and holes with strong reducing properties generated by light in the reaction system can produce free radicals that promote the degradation of organic matter without causing secondary pollution. The utility model patent with application number 201921072573.X discloses a water treatment device that promotes photocatalytic reactions. Although the coordination between the photocatalytic slopes in the water treatment device that promotes photocatalytic reactions increases the reaction area of ​​the photocatalytic reaction, when the sewage discharged from the "mouth"-shaped diversion trough enters the photocatalytic slope to form a water film, the sewage is gathered at the position of the V-shaped structure formed by the intersection of two adjacent photocatalytic slopes, which affects the uniform distribution of the water film and the residence time of the sewage, thereby reducing the efficiency of the photocatalytic reaction of the sewage. Utility Model Content

[0005] In order to solve the technical problem in the related art that sewage is gathered at the position of the V-shaped structure formed by the intersection of two adjacent photocatalytic slopes, affecting the uniform distribution of the water film and the residence time of the sewage, thereby reducing the photocatalytic reaction efficiency of the sewage, the present application provides a coking wastewater treatment device based on photocatalytic reaction.

[0006] The first aspect of the present application provides a coking wastewater treatment device based on photocatalytic reaction, and the coking wastewater treatment device based on photocatalytic reaction comprises:

[0007] The water receiving plate has a water receiving groove, and the bottom of the water receiving groove is inclined;

[0008] A water distribution pipe is provided with a plurality of water outlets spaced apart along the axial direction of the water distribution pipe. The water distribution pipe is located in the water receiving trough and close to the high part of the bottom of the water receiving trough, and the water outlets face the low part of the bottom of the trough.

[0009] In some embodiments, the bottom of the water receiving trough is rectangular and has a first side and a second side relatively arranged, the first side is higher than the second side, the water distribution pipe is installed on the first side and parallel to the first side, and the water outlet faces the second side.

[0010] In some embodiments, two ends of the water distribution pipe are respectively close to two ends of the first side portion.

[0011] In some embodiments, the coking wastewater treatment device based on photocatalytic reaction further includes:

[0012] A water storage tank, located on one side of the water receiving plate and connected to the water receiving tank;

[0013] A delivery pump, wherein the inlet of the delivery pump is connected to the water storage tank, and the outlet of the delivery pump is connected to the water distribution pipe.

[0014] In some embodiments, the water receiving plate is located on the water storage tank, and a water outlet is provided at a lower part of the water receiving plate near the bottom of the trough, and the water outlet corresponds to the inlet of the water storage tank in the vertical direction.

[0015] In some embodiments, the coking wastewater treatment device based on photocatalytic reaction further includes:

[0016] A main frame, one end of which is connected to the water storage tank, and the other end of which is connected to the water receiving plate.

[0017] In some embodiments, the main frame includes:

[0018] A plurality of support plates, one end of each of the support plates is connected to the water receiving plate, and the other end of each of the support plates is connected to the water storage tank.

[0019] In some embodiments, the coking wastewater treatment device based on photocatalytic reaction further includes:

[0020] A plurality of moving wheels are connected to the bottom of the water storage tank.

[0021] In some embodiments, the main frame further comprises:

[0022] A bearing plate is located between the bottom of the water tank and the moving wheel. The water tank is installed on the bearing plate. The moving wheel is installed on a side of the bearing plate away from the water tank.

[0023] In some embodiments, the coking wastewater treatment device based on photocatalytic reaction further includes:

[0024] The illumination module is connected to the water receiving plate, and the illumination direction of the illumination module is toward the bottom of the water receiving tank.

[0025] According to the coking wastewater treatment device based on photocatalytic reaction provided by one or more embodiments of the present application, the coking wastewater treatment device based on photocatalytic reaction includes a water receiving plate and a water distribution pipe. The water receiving plate has a water receiving trough, and the bottom of the water receiving trough is inclined. The water distribution pipe is provided with a plurality of water outlets arranged at intervals along the axial direction of the water distribution pipe, and the water distribution pipe is located in the water receiving trough and close to the high part of the bottom of the water receiving trough, and the water outlet faces the low part of the bottom of the trough. Since multiple water outlets are arranged at intervals and distributed along the axis of the water distribution pipe, and each point on the bottom of the water receiving trough is on the same plane, the coking wastewater in the multiple water outlets can be discharged toward the lower part of the bottom of the trough in sequence along the axis of the water distribution pipe, and flow from the high point of the bottom of the water receiving trough to the low point of the bottom of the water receiving trough under the action of gravity. This ensures that the wastewater in the water distribution pipe can be evenly distributed on the bottom of the water receiving trough, thereby increasing the photocatalytic reaction area of ​​the coking wastewater, increasing the contact time of the coking wastewater with light, promoting the progress of the photocatalytic reaction, and improving the efficiency of the photocatalytic reaction in degrading the coking wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a coking wastewater treatment device based on photocatalytic reaction in one or more embodiments of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of a coking wastewater treatment device (water distribution pipes omitted) based on photocatalytic reaction in one or more embodiments of the present application.

[0028] Description of reference numerals:

[0029] 10. water receiving plate; 11. water receiving trough; 111. first side; 113. third side;

[0030] 20. water distribution pipe; 21. water outlet; 30. water storage tank; 40. support plate; 50. moving wheel;

[0031] 60. Lighting module; 70. Fixing block. DETAILED DESCRIPTION

[0032] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] For every ton of coke produced by a coking plant, about 0.25m 3 Up to 0.50m 3 Coking wastewater containing harmful substances such as phenol, benzene, tar, cyanide, sulfide and pyridine is usually called phenolic wastewater. Calculated by the coke consumed per ton of steel and the wastewater generated in the corresponding coke production process, large steel joint ventures produce about 0.1 tons of coking wastewater per ton of steel, while small and medium-sized steel enterprises produce much more than 0.1 tons of coking wastewater per ton of steel.

[0034] With the development of my country's steel industry, the scale of coking is also expanding, the discharge of coking wastewater has increased exponentially, and the pollution intensity is also increasing. Since the components of coking wastewater are complex and contain a large number of difficult-to-degrade components, the treatment of coking wastewater is difficult and the treatment cost is high.

[0035] There are many ways to treat coking wastewater, among which the biochemical method is a common treatment method. The biochemical treatment process can be divided into two types: 1. Two-stage treatment process, namely pretreatment process + biochemical treatment process. This method is simple and low-cost, but the treatment capacity is limited. It has been basically eliminated. Only a few small enterprises or countries with low environmental protection requirements continue to use it. 2. Three-stage treatment process, namely pretreatment process + biochemical treatment process + deep treatment process, which is the current mainstream treatment process. The effluent COD (Chemical Oxygen Demand) concentration of this treatment process is low, and some water can even be reused as production water, but the treatment process is long and the cost is high.

[0036] It should be noted that COD refers to the amount of oxidant consumed when a certain strong oxidant is used to treat a water sample under certain conditions, reflecting the degree of water pollution. The higher the COD value detected, the more serious the organic pollution in the water.

[0037] With the continuous improvement of my country's environmental protection system, the domestic treatment requirements for coking wastewater are becoming increasingly stringent, so the three-stage treatment process with deep treatment has been widely used. Due to the uncertainty of the biochemical treatment process itself and the high toxicity of coking wastewater, the treatment capacity of coking wastewater is low. In order to achieve the deep treatment and recycling of coking wastewater, a combination of multiple treatment processes is usually used in series to achieve the "zero emission" effect of pollutants, but this treatment method has a long process chain and high treatment costs. Therefore, it is necessary to develop and adopt new processes and technologies that do not use water or use less water, are pollution-free or less polluting, and continuously improve the water quality of deep treatment of coking wastewater and increase the recycling rate of coking wastewater.

[0038] Photocatalytic oxidation technology is an emerging treatment technology for complex organic water bodies in recent years. The principle of photocatalytic oxidation technology is that the free electrons and holes with strong reducing properties generated by light in the reaction system can produce free radicals that promote the degradation of organic matter without causing secondary pollution itself.

[0039] The utility model patent with application number 201921072573.X discloses a water treatment device that promotes photocatalytic reaction. By setting a photocatalytic slope, the sewage flowing out of the diversion trough forms a water film on the photocatalytic slope. Under the irradiation of the light source, the photocatalytic slope can increase the photocatalytic reaction area of ​​the coking wastewater and prolong the time of the sewage photocatalytic reaction, thereby increasing the sewage photocatalytic reaction rate. The coordination between the photocatalytic slopes increases the reaction area of ​​the photocatalytic reaction, but when the sewage discharged from the "mouth"-shaped diversion trough enters the photocatalytic slope to form a water film, the sewage is gathered at the position of the V-shaped structure formed by the intersection of two adjacent photocatalytic slopes, which affects the uniform distribution of the water film and the residence time of the sewage, thereby reducing the efficiency of the sewage photocatalytic reaction.

[0040] In order to solve the technical problem in the related art that sewage is gathered at the position of the V-shaped structure formed by the intersection of two adjacent photocatalytic slopes, affecting the uniform distribution of the water film and the residence time of the sewage, thereby reducing the photocatalytic reaction efficiency of the sewage, the present application provides a coking wastewater treatment device based on photocatalytic reaction.

[0041] See also Figure 1 and Figure 2 The coking wastewater treatment device based on photocatalytic reaction includes a water receiving plate 10 and a water distribution pipe 20. The water receiving plate 10 can be a rectangular plate, and the water receiving plate 10 has two side surfaces arranged opposite to each other, and the water receiving trough 11 is opened on one side and extends to the other side. The water receiving plate 10 is placed obliquely so that the bottom of the water receiving trough 11 is in an inclined state, so that the bottom of the water receiving trough 11 is inclined.

[0042] In some embodiments, the bottom of the water receiving groove 11 can be tilted relative to the horizontal plane (or vertical plane) by excavating the water receiving groove 11 in the water receiving plate 10, so as to achieve the tilting of the bottom of the water receiving groove 11. The tilting method of the bottom of the water receiving groove 11 can be set according to actual needs, and this application does not limit it.

[0043] The length of the water distribution pipe 20 can be 500 mm, and a plurality of water outlets 21 are arranged at intervals along the axial direction of the water distribution pipe 20. The water distribution pipe 20 is located in the water receiving trough 11 and close to the high part of the bottom of the water receiving trough 11, and the water outlets 21 face the low part of the bottom of the trough. Since multiple water outlets 21 are arranged at intervals and distributed along the axis of the water distribution pipe 20, and each point on the bottom of the water receiving trough 11 is on the same plane, the coking wastewater in the multiple water outlets 21 can be discharged toward the lower part of the bottom of the trough in sequence along the axis of the water distribution pipe 20, and flow from the high point of the bottom of the water receiving trough 11 to the low point of the bottom of the water receiving trough 11 under the action of gravity. This ensures that the wastewater in the water distribution pipe 20 can be evenly distributed on the bottom of the water receiving trough 11 (the bottom of the water receiving trough 11 can be understood as a photocatalytic reaction slope), thereby increasing the photocatalytic reaction area of ​​the coking wastewater, increasing the contact time of the coking wastewater with light, promoting the progress of the photocatalytic reaction, and improving the efficiency of the photocatalytic reaction in degrading the coking wastewater.

[0044] It should be noted that the material of the water receiving plate 10 can be a laminated organic glass plate or other materials, which can be set according to actual needs and is not limited in this application. The length of the water distribution pipe 20 can also be determined according to the size of the water receiving tank 11, which is not limited in this application.

[0045] A plurality of water outlets 21 are arranged at intervals along the axis of the water distribution pipe 20. By reasonably setting the distance between two adjacent water outlets 21 on the water distribution pipe 20, the coking wastewater discharged from the two adjacent water outlets 21 can be prevented from overlapping, thereby improving the uniformity of distribution of the coking wastewater on the bottom of the water receiving tank 11, increasing the photocatalytic reaction area of ​​the coking wastewater, promoting the progress of the photocatalytic reaction, and improving the efficiency of degrading the coking wastewater by the photocatalytic reaction.

[0046] It should be noted that the distance between two adjacent water outlets 21 of the water distribution pipe 20 along the axial direction only needs to ensure that the coking wastewater discharged from the two adjacent water outlets 21 does not overlap. The distance between two adjacent water outlets 21 can be set according to actual needs and is not limited in this application.

[0047] See also Figure 1 to Figure 2The bottom of the water receiving trough 11 may be rectangular, and the rectangular bottom of the water receiving trough 11 has a first side 111, a second side (not shown in the figure), a third side 113 and a fourth side (not shown in the figure), the first side 111 and the second side are arranged opposite and parallel, and the third side 113 and the fourth side are arranged opposite and parallel. The first side 111 is higher than the second side. Since the water distribution pipe 20 is installed on the first side 111 and is parallel to the first side 111, the water outlet 21 faces the second side. Then the coking wastewater discharged from the water outlet 21 on the water distribution pipe 20 can be limited between the third side 113 and the fourth side, which ensures that the coking wastewater discharged from the water outlet 21 is evenly distributed on the bottom of the water receiving trough 11, and can also simplify the structure of the water receiving plate 10 and improve the practicality of the water receiving plate 10.

[0048] In order to evenly distribute the coking wastewater on the bottom of the entire water receiving tank 11, the two ends of the water distribution pipe 20 are respectively close to the two ends of the first side 111. Since the bottom of the water receiving tank 11 is rectangular, the two ends of the water distribution pipe 20 are respectively close to the two ends of the first side 111, and the two ends of the water distribution pipe 20 are respectively close to the third side 113 and the fourth side, so that the coking wastewater output by the water distribution pipe 20 can be transported from the first side 111 to the second side under the action of gravity, and the coking wastewater can be confined between the third side 113 and the fourth side, so that the coking wastewater is evenly distributed on the bottom of the entire water receiving tank 11, increasing the photocatalytic reaction area of ​​the coking wastewater, increasing the contact time between the coking wastewater and light, promoting the photocatalytic reaction, and improving the efficiency of photocatalytic reaction in degrading coking wastewater.

[0049] See also Figure 1 to Figure 2 The coking wastewater treatment device based on photocatalytic reaction also includes a lighting module 60, which is connected to the inner wall of the water receiving tank 11 near the second side, and the lighting direction of the lighting module 60 is toward the bottom of the water receiving tank 11. When the coking wastewater in the water distribution pipe 20 is transported from the first side 111 of the water receiving tank 11 to the second side, a photocatalytic reaction can be carried out under the illumination of the light source module.

[0050] It should be noted that the lighting module 60 can also be installed at other positions on the water receiving plate 10, ensuring that the lighting direction of the lighting module 60 is toward the bottom of the water receiving trough 11. The present application does not limit the installation position of the lighting module 60 on the water receiving plate 10, and it can be set according to actual needs.

[0051] When there is sufficient natural light from outside, the water receiving plate 10 can be moved to a position with strong light, and the photocatalytic reaction can be carried out using the natural light source. In this way, the photocatalytic reaction can be achieved without adding additional light sources, thus saving energy consumption of the photocatalytic reaction.

[0052] In order to make the coking wastewater circulate and react to meet the effluent standards, please refer to Figure 1 to Figure 2The coking wastewater treatment device based on photocatalytic reaction also includes a water storage tank 30 and a delivery pump (not shown in the figure).

[0053] The water storage tank 30 is located on one side of the water receiving plate 10 and is connected to the water receiving trough 11, so that the coking wastewater that has undergone photocatalytic reaction on the inclined surface of the bottom of the water receiving trough 11 in the water receiving trough 11 can be transported to the water storage tank 30, and the coking wastewater is evenly mixed in the water storage tank 30. The inlet of the delivery pump is connected to the water storage tank 30 through an inlet pipe (not shown in the figure), and the outlet is connected to the water distribution pipe 20 through an outlet pipe (not shown in the figure). The coking wastewater that has undergone photocatalytic reaction in the water receiving trough 11 in the water storage tank 30 can be transported to the water distribution pipe 20 through the delivery pump, and then the water distribution pipe 20 distributes the coking wastewater at the bottom of the water receiving trough 11 for photocatalytic reaction. In this way, the photocatalytic reaction of the coking wastewater can be circulated under the action of the delivery pump, and the water storage tank 30 can realize the storage of the coking wastewater while also realizing the circulation of the coking wastewater.

[0054] It should be noted that the delivery pump can be a peristaltic pump, etc., and the corresponding pump body can also be selected according to actual needs, which is not limited in this application. In addition to the peristaltic pump, no additional power facilities are required in this application, saving energy consumption of the photocatalytic reaction.

[0055] When the coking wastewater obtained through the photocatalytic reaction in the water storage tank 30 meets the effluent standard, the delivery pump can be shut down to stop the coking wastewater circulation reaction. When the COD concentration of the coking wastewater in the water storage tank 30 is detected to be lower than the standard concentration, it can be determined that the coking wastewater in the water storage tank 30 that has undergone the photocatalytic reaction meets the effluent standard. The detection of the COD concentration of the coking wastewater that has undergone the photocatalytic reaction in the water storage tank 30 can be carried out using conventional detection technology, which is not limited in this application and can be selected according to actual needs.

[0056] In order to ensure the storage space requirement of the coking wastewater in the water storage tank 30, the water storage tank 30 is 1000 mm long, 800 mm wide and 400 mm high, and the material of the water storage tank 30 can be organic glass, which can store the coking wastewater and also facilitate the checking of the storage amount of the coking wastewater in the water storage tank 30, thereby improving the practicality and applicability of the water storage tank 30. In some embodiments, the material and specification size of the water storage tank 30 can be set according to actual needs, and this application does not limit it.

[0057] The water receiving plate 10 is located on the water storage tank 30. A liquid outlet (not shown in the figure) is provided at the lower part of the water receiving plate 10 near the bottom of the tank, and the liquid outlet corresponds to the inlet of the water storage tank 30 in the vertical direction. In this way, the coking wastewater that has undergone photocatalytic reaction and accumulated on the second side of the water receiving tank 11 can fall into the water storage tank 30 located below through the liquid outlet under the action of gravity.

[0058] In some embodiments, the water receiving trough 11 on the water receiving plate 10 can also be connected to the water storage tank 30 through a delivery pipe (not shown in the figure). Since the water receiving trough 11 in the water receiving plate 10 is located above the water storage tank 30, the coking wastewater in the water receiving trough 11 can be transported to the water storage tank 30 through the delivery pipe. The present application does not limit the connection method between the water receiving trough 11 and the water storage tank 30, which can be set according to actual needs.

[0059] Since the water receiving plate 10 is located above the water storage tank 30, in order to make the water receiving plate 10 and the water storage tank 30 integrally arranged, the coking wastewater treatment device based on photocatalytic reaction also includes a main frame (not shown in the figure), one end of the main frame is connected to the water storage tank 30, and the other end is connected to the water receiving plate 10. Then the water storage tank 30 can support the water receiving plate 10 through the main frame, so that the water receiving plate 10 is located above the water storage tank 30, so that the water storage tank 30 and the water receiving plate 10 can be installed on the main frame respectively, so that the water receiving plate 10 and the water storage tank 30 are integrated through the main frame, and the integrity of the coking wastewater treatment device based on photocatalytic reaction is improved.

[0060] The projection of the bottom surface of the water tank 30 on the plane where the water tank 30 is located coincides with the projection of the bottom surface of the water tank 30 on the plane where the water receiving plate 10 is located. The main frame may include multiple support plates 40, and one end of the multiple support plates 40 is connected to the side wall of the water tank 30, and the other end is connected to the side wall of the water receiving plate 10. In this way, the water tank 30 can support the water receiving plate 10 through the multiple support plates 40, and the multiple support plates 40 can be respectively and sequentially connected to the peripheral side walls of the water receiving plate 10, thereby improving the stability of the water tank 30 supporting the water receiving plate 10 through the support plates 40.

[0061] The support plate 40 among the multiple support plates 40 connected to the water receiving plate 10 and parallel to the first edge 111 in the water receiving trough 11 constitutes a back plate (not shown in the figure). The angle between the plane where the water receiving plate 10 is located and the plane where the back plate is located is 75°. When the water receiving plate 10 is tilted, the water receiving trough 11 is tilted. In this way, the coking wastewater discharged from the first edge 111 of the water distribution pipe 20 located in the water receiving trough 11 can be transported to the second edge under the action of gravity, and transported to the water storage tank 30 through the liquid outlet on the water receiving plate 10 connected to the water receiving trough 11.

[0062] It should be noted that the angle between the plane where the water receiving plate 10 is located and the plane where the back plate is located can be set according to actual needs, and the bottom of the water receiving trough 11 can be tilted, and this application does not limit it.

[0063] In order to facilitate the connection between the water outlet pipe and the water distribution pipe 20, please refer to Figure 1 to Figure 2A fixing block 70 is arranged between the outer side of the first edge 111 of the water receiving groove 11 of the water receiving plate 10 and the back plate. A positioning channel (not shown in the figure) is opened in the fixing block 70. The positioning channel runs through the fixing block 70. The water outlet pipe is installed and fixed in the positioning channel and is connected with the water distribution pipe 20. In this way, the connection between the delivery pump and the water distribution pipe 20 can be achieved through the water outlet pipe, and the stability of the connection between the water outlet pipe and the water distribution pipe 20 can also be ensured.

[0064] In order to facilitate the position movement of the coking wastewater treatment device based on photocatalytic reaction, the coking wastewater treatment device based on photocatalytic reaction also includes a plurality of moving wheels 50, and the plurality of moving wheels 50 can be respectively connected to the bottom of the water storage tank 30. In this way, the coking wastewater treatment device based on photocatalytic reaction can be moved by the plurality of moving wheels 50 located at the bottom of the water storage tank under the action of external force, and the coking wastewater treatment device can be moved to the desired position according to demand.

[0065] When there is sufficient natural light outside, the coking wastewater treatment device can be moved to a location with strong light through the moving wheel 50, and the photocatalytic reaction can be carried out using natural light sources. In this way, the photocatalytic reaction can be achieved without adding additional light sources, thus saving energy consumption of the photocatalytic reaction.

[0066] To facilitate the installation of the water storage tank 30 and the moving wheel 50, please refer to Figure 1 to Figure 2 The main frame also includes a bearing plate (not shown in the figure), which is placed horizontally. A plurality of movable wheels 50 can be installed below the bearing plate, and a water tank 30 can be installed above the bearing plate to improve the integration of the water tank 30 and the bearing plate. In this way, when the water tank 30 is pushed, the plurality of movable wheels 50 can drive the water tank 30 to move smoothly.

[0067] The supporting plate can be set to a rectangular plate shape, and four moving wheels 50 can be provided and located near the four corners of the supporting plate, so that the four moving wheels 50 can be evenly distributed on the supporting plate, improving the stability of the moving wheels 50 supporting the supporting plate. In some embodiments, multiple moving wheels 50 can also be provided, and multiple moving wheels 50 are evenly installed on the supporting plate to improve the stability of the moving wheels 50 supporting the supporting plate and the smoothness of operation. It should be noted that the number of moving wheels 50 can be set according to actual needs, and this application does not limit it.

[0068] In order to facilitate pushing the water tank 30 to move the position of the coking wastewater treatment device, a push handle (not shown in the figure) can be installed on the side of the back plate away from the supporting plate and the water tank 30. The push handle can be used to push the coking wastewater treatment device to move, thereby improving the convenience of pushing the coking wastewater treatment device to move.

[0069] A push rod (not shown in the figure) may also be provided on the side of the back plate away from the water storage tank 30, one end of the push rod is connected to the bearing plate, and the other end extends upward. A push handle may also be installed on the side of the push rod away from the back plate. The bearing plate, the moving wheel 50, the push rod and the push handle may constitute a cart, so that the operator may directly push the cart to move the position through the push handle. The water storage tank 30 may be fixedly installed on the side of the bearing plate away from the moving wheel 50, and the position of the water receiving plate 10 supported on the water storage tank 30 may be moved by moving the cart. The structure is simple and easy to implement, which improves the convenience of the coking wastewater treatment device to realize the photocatalytic reaction.

[0070] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A coking wastewater treatment device based on photocatalytic reaction, characterized in that: The coking wastewater treatment device based on photocatalytic reaction comprises: The water receiving plate has a water receiving groove, and the bottom of the water receiving groove is inclined; A water distribution pipe is provided with a plurality of water outlets spaced apart along the axial direction of the water distribution pipe. The water distribution pipe is located in the water receiving trough and close to the high part of the bottom of the water receiving trough, and the water outlets face the low part of the bottom of the trough.

2. The coking wastewater treatment device based on photocatalytic reaction according to claim 1 is characterized in that: The bottom of the water receiving trough is rectangular and has a first side and a second side that are relatively arranged. The first side is higher than the second side. The water distribution pipe is installed on the first side and is parallel to the first side. The water outlet faces the second side.

3. The coking wastewater treatment device based on photocatalytic reaction according to claim 2 is characterized in that: Two ends of the water distribution pipe are respectively close to two ends of the first side portion.

4. The coking wastewater treatment device based on photocatalytic reaction according to claim 1 is characterized in that: The coking wastewater treatment device based on photocatalytic reaction also includes: A water storage tank, located on one side of the water receiving plate and connected to the water receiving tank; A delivery pump, wherein the inlet of the delivery pump is connected to the water storage tank, and the outlet of the delivery pump is connected to the water distribution pipe.

5. The coking wastewater treatment device based on photocatalytic reaction according to claim 4 is characterized in that: The water receiving plate is located on the water storage tank, and a liquid outlet is provided at a lower part of the water receiving plate close to the bottom of the tank, and the liquid outlet corresponds to the inlet of the water storage tank in the vertical direction.

6. The coking wastewater treatment device based on photocatalytic reaction according to claim 4 is characterized in that: The coking wastewater treatment device based on photocatalytic reaction also includes: A main frame, one end of which is connected to the water storage tank, and the other end of which is connected to the water receiving plate.

7. The coking wastewater treatment device based on photocatalytic reaction according to claim 6 is characterized in that: The main framework includes: A plurality of support plates, one end of each of the support plates is connected to the water receiving plate, and the other end of each of the support plates is connected to the water storage tank.

8. The coking wastewater treatment device based on photocatalytic reaction according to claim 7 is characterized in that: The coking wastewater treatment device based on photocatalytic reaction also includes: A plurality of moving wheels are connected to the bottom of the water storage tank.

9. The coking wastewater treatment device based on photocatalytic reaction according to claim 8 is characterized in that: The main framework also includes: A bearing plate is located between the bottom of the water tank and the moving wheel, the water tank is installed on the bearing plate, and the moving wheel is installed on a side of the bearing plate away from the water tank.

10. The coking wastewater treatment device based on photocatalytic reaction according to any one of claims 1 to 9, characterized in that: The coking wastewater treatment device based on photocatalytic reaction also includes: The illumination module is connected to the water receiving plate, and the illumination direction of the illumination module is toward the bottom of the water receiving tank.

Images