Coal-containing sewage treatment device for bulk cargo terminal

Abstract

The present invention discloses a sewage treatment device for coal-containing bulk cargo terminals, comprising: a sedimentation tank; a first water pipe, one end of which is communicated with the sedimentation tank; a sewage purification tank, which includes: a tank body; a dispersion plate, which is conical, the side wall of the dispersion plate is a hollow structure, and a plurality of first liquid outlet holes are arranged at the edge of the side wall of the dispersion plate; a support rod, the inside of which is communicated with the hollow structure; a plurality of second liquid outlet holes are arranged at the bottom of the support rod; a partition plate, which divides the inside of the support rod into an upper cavity and a lower cavity; a plurality of first plate bodies; a plurality of second plate bodies; a plurality of first guide plates; a first chemical dosing device, which is communicated with the upper cavity; a second chemical dosing device, which is communicated with the lower cavity; a second guide plate; a clean water tank; a second water pipe, one end of which is communicated with the lower part of the tank body, and the other end of which is communicated with the clean water tank. The present invention can simultaneously realize the mixing of sewage with a coagulant and a flocculant aid in the tank body, and the increase of flocculation particles, and there is no need to set up a stirring device, thus the cost can be saved.

Description

Technical Field

[0001] The present invention relates to the field of coal-containing sewage treatment. More specifically, the present invention relates to a coal-containing sewage treatment device for bulk terminals. Background Art

[0002] During sea transportation, a stockyard is usually set up near the terminal. If it rains or the coal conveyor belt is washed, coal-containing sewage will be generated. The coal-containing sewage will pollute the nearby sea area, so the coal-containing sewage needs to be treated before being discharged.

[0003] When treating the existing coal-containing sewage, for example, with the application number 201620747117.0, the coal-containing sewage is first introduced into a sedimentation tank for sedimentation, and then the sedimented coal-containing sewage is introduced into a coagulation tank, where a coagulant is mixed with the coal-containing sewage and gradually forms larger flocs. The flocs sink under the action of gravity. The coal-containing sewage after coagulation treatment enters a sewage purification device, where the coal-containing sewage is mixed with a coagulant aid and gradually forms larger flocs. The flocs sink under the action of gravity. The treated water is introduced into a clear water tank. However, a coagulation tank and a sewage purification device need to be set up separately, and stirring devices need to be set up in both the coagulation tank and the sewage purification device, so the cost is relatively high. Summary of the Invention

[0004] The object of the present invention is to provide a coal-containing sewage treatment device for bulk terminals, in which the dispersion plate, each first plate body, each second plate body, each first baffle, each first guide plate and the second guide plate are used in cooperation to simultaneously achieve the mixing of sewage with a coagulant and a coagulant aid and the increase of flocculation particles in the pool body, so that it is not necessary to separately set up a coagulation tank, a sewage purification device and a stirring device, thereby saving costs.

[0005] To achieve these objects and other advantages of the present invention, there is provided a coal-containing sewage treatment device for bulk terminals, including:

[0006] A sedimentation tank, whose water inlet is communicated with a conduit for introducing coal-containing sewage;

[0007] A first water pipe, one end of which is communicated with the water outlet of the sedimentation tank;

[0008] A sewage purification tank, which includes:

[0009] A pool body, which is cylindrical. The other end of the first water pipe vertically passes through the center of the top of the pool body, and a sewage discharge port is arranged at the bottom of the pool body;

[0010] The dispersion plate is a conical shape with a hollow interior and an open bottom, and is coaxially arranged with the pool body. The dispersion plate is spaced apart from the inner side wall of the pool body by a certain distance. The dispersion plate is located below the other end of the first water pipe and is opposite to and spaced apart from the end of the other end of the first water pipe by a certain distance. The side wall of the dispersion plate is a hollow structure. A plurality of first liquid outlet holes are arranged at intervals along the circumferential direction of the side wall of the dispersion plate. The plurality of first liquid outlet holes are located between the outer wall and the inner wall of the side wall of the dispersion plate and communicate with the hollow structure;

[0011] The support rod is hollow inside. The top of the support rod is connected to the top of the dispersion plate, and the inside is communicated with the hollow structure; a plurality of second liquid outlet holes are arranged at intervals at the bottom of the support rod;

[0012] The partition plate is arranged inside the support rod and divides the inside of the support rod into an upper cavity and a lower cavity;

[0013] A plurality of first plate bodies are arranged at intervals in the vertical direction below the dispersion plate. Each first plate body is circular and horizontally arranged. Each first plate body is fixedly connected to the inner side wall of the upper part of the pool body. The support rod passes through each first plate body and is fixedly connected to each first plate body. Each first plate body is provided with a first opening, and each first opening is arranged around the support rod. The edge of the side wall of the dispersion plate is opposite to the part of the topmost first plate body located outside the first opening;

[0014] A plurality of second plate bodies. An annular second plate body is horizontally arranged between any two adjacent first plate bodies up and down. Each second plate body is spaced apart from the inner side wall of the pool body and the outer side wall of the support rod by a certain distance. Any second plate body includes a first part, a second part and a third part. The second part is opposite to the first openings located above and below it. The first part and the third part are respectively located outside and inside the second part. At least one circle of first baffles are arranged at intervals at the top and bottom of the first part and the third part of each second plate body. Each circle of first baffles is arranged at intervals along the circumferential direction of the corresponding second plate body; at least one circle of first baffles at the top and / or bottom of each second plate body is connected to the first plate body located above and / or below it;

[0015] A plurality of first guiding plates are arranged at intervals in the vertical direction below the lowermost first plate body. Each first guiding plate is hollow inside. The top surface of each first guiding plate gradually depresses downward from its edge towards the middle, and the bottom surface is horizontal. A through hole is respectively arranged in the middle of the top surface of each first guiding plate. The support rod passes through each through hole and the bottom of each first guiding plate and is fixedly connected to the bottom of each first guiding plate. The size of each through hole is larger than the outer diameter of the support rod. The lowermost first opening faces the side wall of the uppermost first guiding plate; a second opening is arranged at the edge of the bottom of each first guiding plate, and each second opening is arranged around the support rod;

[0016] A second guiding plate, whose top surface gradually depresses downward from its edge towards the middle, and the bottom surface is horizontal. A cavity is formed between the top surface and the bottom surface of the second guiding plate. The middle part of the top surface of the second guiding plate is open and faces the plurality of second liquid outlet holes and is separated by a certain distance. A spiral flow guiding groove is arranged between the top surface and the bottom surface of the second guiding plate. The starting end of the flow guiding groove is located in the middle of the second guiding plate. A third opening is arranged at the edge of the bottom surface of the second guiding plate, and the third opening is communicated with the end of the flow guiding groove;

[0017] A first chemical dosing device, which contains a coagulant, and the first chemical dosing device is communicated with the upper cavity through a pipeline;

[0018] A second chemical dosing device, which contains a coagulant aid, and the second chemical dosing device is communicated with the lower cavity through a pipeline;

[0019] A clear water tank;

[0020] A second water pipe, one end of which is communicated with the lower part of the pool body, and the other end is communicated with the clear water tank.

[0021] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, the sewage purification tank further includes:

[0022] A plurality of third guiding plates are arranged at intervals in the vertical direction inside the lower part of the pool body and are located below the second guiding plate. Any two adjacent upper and lower third guiding plates are arranged staggeredly. Each third guiding plate is arranged along an inclined section of the pool body. The higher end of each third guiding plate is fixedly connected to the inner side wall of the pool body and is seamlessly connected. The lower end is separated from the inner side wall of the pool body by a certain distance. The higher end of the uppermost third guiding plate faces the third opening, and one end of the second water pipe is located above the uppermost third guiding plate.

[0023] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, the support rod is cylindrical and is coaxially arranged with the dispersion plate.

[0024] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, each of the first openings is circular ring-shaped, and the center of the circle is located on the axis of the support rod. Each of the second plate bodies is circular ring-shaped, and the center of the circle is located on the axis of the support rod.

[0025] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, the outer edges of each of the first guide plates are fixed to the inner side wall of the pool body and are seamlessly connected.

[0026] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, it further includes:

[0027] A third water pipe, one end of which is communicated with the sewage discharge port, and the other end of which is communicated with the sedimentation tank.

[0028] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, multiple circles of first baffles are arranged on the first part and the third part of each of the second plate bodies. The adjacent two circles of first baffles on the first part and the third part of each of the second plate bodies are arranged staggeredly. The first baffles at the top and the bottom of each of the second plate bodies are respectively connected to the bottom of the first plate body above it and the top of the first plate body below it. Each of the first baffles gradually slopes downward from its top to its bottom. The top of the first baffle at the top of each of the second plate bodies is closer to the edge of the corresponding second plate body than its bottom. The bottom of the first baffle at the bottom of each of the second plate bodies is closer to the edge of the corresponding second plate body than its top. From top to bottom, the included angle between each circle of first baffles and the vertical direction gradually increases.

[0029] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, multiple circles of second baffles are arranged at intervals on the top of the first plate body at the uppermost position. Each circle of second baffles is arranged at intervals along the circumferential direction of the corresponding first plate body and is located outside the corresponding first opening. Each of the second baffles is arranged vertically, and the top of each of the second baffles is fixedly connected to the bottom of the dispersion plate. The adjacent two circles of second baffles are arranged staggeredly.

[0030] Preferably, in the coal-containing sewage treatment device of the bulk cargo terminal, the through hole is circular, and the center of the circle of the through hole is on the axis of the support rod. Among any two adjacent first guide plates up and down, the distance between the edge of the top surface and the edge of the bottom surface of the first guide plate located above is ≤ the distance between the edge of the bottom surface of the first guide plate located above and the edge of the top surface of the first guide plate located below ≤ the distance between the middle of the top surface and the middle of the bottom surface of the first guide plate located below.

[0031] The present invention has at least the following beneficial effects:

[0032] The present invention can disperse the coal-containing sewage, coagulant and flocculant aid by setting a dispersion plate. After dispersion, it is beneficial for the coal-containing sewage to be mixed with the coagulant and flocculant aid. The dispersed coal-containing sewage and coagulant are preliminarily mixed at the first plate body at the top. Then, the flocculated water body is continuously dispersed by each first plate body and the second plate bodies, which helps the coal-containing sewage and coagulant to be mixed. And during the dispersion process, the coal-containing sewage is disturbed when passing through each first baffle, forming vortices. Under the action of the vortices, the flocculated water body is accelerated to form flocs. Then, it flows under the action of multiple first guiding plates. Since the flow space gradually increases during the flowing process, it helps the rapid growth of particles and can also reduce the breakage of large-sized particles. Then, it is mixed with the dispersed flocculant aid in the flow guiding groove of the second guiding plate. Since the flow guiding groove is spiral and the top surface of the second guiding plate gradually sinks downward from its edge towards the middle, the flow space gradually increases during the flowing process of the sewage, which helps the rapid growth of particles and can also reduce the breakage of large-sized particles. Then, the flocculated particles flow from the third opening to the bottom of the pool for precipitation. Since the mixing of the sewage with the coagulant and flocculant aid is carried out in the pool, there is no need to separately set a coagulation tank and a sewage purification device. The dispersion plate, each first plate body, each second plate body, each first baffle, each first guiding plate and the second guiding plate are used in cooperation to realize the mixing of the sewage with the coagulant and flocculant aid, as well as the increase of the flocculated particles. Therefore, there is no need to separately set a stirring device.

[0033] The present invention sets multiple third guiding plates, so that the sewage first flows through the third opening to the higher end of the topmost third guiding plate. The flocculated particles sink along the inclined surfaces of each third guiding plate to the bottom of the pool under the action of gravity, which is beneficial for the rapid separation of the flocculated particles from the water. When pumping the water in the pool into the clear water pool, the multiple third guiding plates can also prevent the sediment at the bottom of the pool from being disturbed.

[0034] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of a coal-containing sewage treatment device at a bulk cargo terminal according to an embodiment of the present invention;

[0036] Figure 2 is a schematic structural diagram of a sewage purification tank according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0038] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] As Figure 1 and Figure 2 shown, the present invention provides a sewage treatment device for coal-containing bulk terminals, including:

[0040] A sedimentation tank 1, whose water inlet is connected to the inlet pipe of the coal-containing sewage;

[0041] A first water pipe 2, one end of which is connected to the water outlet of the sedimentation tank 1;

[0042] A sewage purification tank 3, which includes:

[0043] A tank body 31, which is cylindrical. The other end of the first water pipe 2 vertically passes through the center of the top of the tank body 31,

[0044] A sewage discharge port is arranged at the bottom of the tank body 31;

[0045] A dispersion plate 32, which is internally hollow and has an open bottom in a conical shape, and is coaxially arranged with the tank body 31. The dispersion plate 32 is separated from the inner side wall of the tank body 31 by a certain distance. The dispersion plate 32 is located below the other end of the first water pipe 2 and is opposite to and separated from the end of the other end of the first water pipe 2 by a certain distance. The side wall of the dispersion plate 32 is a hollow structure. A plurality of first liquid outlet holes 321 are arranged at intervals along the circumferential direction of the side wall of the dispersion plate 32. The coagulant is evenly sprayed through the first liquid outlet holes 321. The plurality of first liquid outlet holes 321 are located between the outer wall and the inner wall of the side wall of the dispersion plate 32 and are communicated with the hollow structure;

[0046] A support rod 33, which is internally hollow. The top of the support rod 33 is connected to the top of the dispersion plate 32 and is internally communicated with the hollow structure; a plurality of second liquid outlet holes 331 are arranged at intervals at the bottom of the support rod 33, and the coagulant aid is evenly sprayed through the second liquid outlet holes 331;

[0047] A partition plate 34, which is arranged in the support rod 33 and divides the interior of the support rod 33 into an upper cavity and a lower cavity;

[0048] A plurality of first plate bodies 35 are vertically and spacedly arranged below the dispersion plate 32. Each first plate body 35 is circular and horizontally arranged. Each first plate body 35 is fixedly connected to the inner side wall of the upper part of the pool body 31. The support rod 33 passes through each first plate body 35 and is fixedly connected to each first plate body 35. An annular first opening 351 is provided on each first plate body 35. Each first opening 351 is arranged around the support rod 33. The sewage on the first plate body 35 passes downward through the first opening 351. The edge of the side wall of the dispersion plate 32 is opposite to the part of the topmost first plate body 35 located outside the first opening 351, so that the coagulant and the coal-containing sewage dispersed by the dispersion plate 32 can be preliminarily mixed on the topmost first plate body 35;

[0049] A plurality of second plate bodies 36. A circular second plate body 36 is horizontally arranged between any two adjacent first plate bodies 35 up and down. Each second plate body 36 is spaced a certain distance from the inner side wall of the pool body 31 and the outer side wall of the support rod 33, so that the sewage can flow downward. Any second plate body 36 includes a first part, a second part and a third part. The second part is opposite to the first openings 351 located above and below it. The first part and the third part are respectively located outside and inside the second part. At least one circle of first baffles 361 is spacedly arranged at the top and bottom of the first part and the third part of each second plate body 36. Each circle of first baffles 361 is spacedly arranged along the circumferential direction of the corresponding second plate body 36; At least one circle of first baffles 361 at the top or bottom of each second plate body 36 is connected to the first plate body 35 located above or below it, or at least one circle of first baffles 361 at the top of each second plate body 36 is connected to the first plate body 35 located above it, and at the same time, at least one circle of first baffles 361 at the bottom of each second plate body 36 is connected to the first plate body 35 located below it, so as to fix the second plate body 36 on the first plate body 35, and at the same time generate vortices through the first baffles 361 during the flow of sewage;

[0050] A plurality of first guide plates 37 are arranged at intervals in the vertical direction below the lowermost first plate body 35. Each first guide plate 37 is hollow inside. The top surface of each first guide plate 37 gradually sinks downward from its edge toward the middle, and the bottom surface is horizontal. When sewage flows from the middle of the first guide plate 37 toward the edge, the flow space gradually increases, which helps the rapid growth of particles and can also reduce the breakage of large-sized particles. A through hole 371 is respectively arranged in the middle of the top surface of each first guide plate 37. The support rod 33 passes through each through hole 371 and the bottom of each first guide plate 37 and is fixedly connected to the bottom of each first guide plate 37. The size of each through hole 371 is larger than the outer diameter of the support rod 33, so that sewage can flow into the first guide plate 37 through the through hole 371. The lowermost first opening 351 is opposite to the side wall of the uppermost first guide plate 37, so that the water flowing out of the lowermost first opening 351 can flow down along the top surface of the first guide plate 37 into the first guide plate 37; a second opening 372 is arranged at the edge of the bottom of each first guide plate 37, and each second opening 372 is arranged around the support rod 33;

[0051] A second guide plate 38, the top surface of which gradually sinks downward from its edge toward the middle, and the bottom surface is horizontal. When sewage flows from the middle of the second guide plate 38 into the diversion groove, the flow space gradually increases, which helps the rapid growth of particles and can also reduce the breakage of large-sized particles. A cavity is formed between the top surface and the bottom surface of the second guide plate 38. The middle of the top surface of the second guide plate 38 is open and is opposite to the plurality of second liquid outlet holes 331 and is separated by a certain distance, so that sewage and coagulant aid can flow downward into the first end of the diversion groove. A spiral diversion groove is formed between the top surface and the bottom surface of the second guide plate 38. The first end of the diversion groove is located in the middle of the second guide plate 38. A third opening 381 is arranged at the edge of the bottom surface of the second guide plate 38, and the third opening 381 is communicated with the end of the diversion groove;

[0052] A first chemical dosing device containing a coagulant, and the first chemical dosing device is communicated with the upper cavity through a pipeline;

[0053] A second chemical dosing device containing a coagulant aid, and the second chemical dosing device is communicated with the lower cavity through a pipeline;

[0054] A clear water tank 4;

[0055] A second water pipe 5, one end of which is communicated with the lower part of the tank body 31, and the other end of which is communicated with the clear water tank 4.

[0056] When the coal-containing sewage treatment device provided by this solution is in use, the coal-containing sewage is introduced into the sedimentation tank 1 by a pump. After sedimentation in the sedimentation tank 1, the coal-containing sewage is introduced into the tank body 31 through the first water pipe 2. The sewage is first dispersed by the dispersion plate 32 and is preliminarily mixed with the coagulant sprayed out from the first liquid outlet hole 321 on the topmost first plate body 35. After that, the flocculated water body falls onto the topmost second plate body 36 after passing through the uppermost first opening 351. After being dispersed by the second plate body 36, it then falls onto the lower first plate body 35 and then continues to move downward. During this process, the sewage is continuously dispersed by each first plate body 35 and each second plate body 36, which helps the coal-containing sewage and the coagulant to be mixed. And during the dispersion process, the coal-containing sewage is disturbed when passing through each first baffle 361 to form vortices, and the flocculated water body is accelerated to form flocs under the action of the vortices. Then it flows under the action of multiple first guiding plates 37. Because during the flowing process, the flowing space gradually increases, it helps the rapid growth of particles and can also reduce the breakage of large-sized particles. Then it is mixed with the coagulant aid sprayed out from the second liquid outlet hole 331 at the bottom of the support rod 33 in the diversion groove of the second guiding plate 38. Because the diversion groove is spiral and the top surface of the second guiding plate 38 gradually depresses downward from its edge towards the middle, the flowing space gradually increases during the rotational flow of the sewage, which helps the rapid growth of particles and can also reduce the breakage of large-sized particles. Then the flocculated particles flow from the third opening 381 to the bottom of the tank body 31 for sedimentation. Since the mixing of the sewage with the coagulant and the coagulant aid is carried out in the tank body 31, there is no need to separately set up a coagulation tank and a sewage purification device. The dispersion plate 32, each first plate body 35, each second plate body 36, each first baffle 361, each first guiding plate 37 and the second guiding plate 38 are used in cooperation to achieve the mixing of the sewage with the coagulant and the coagulant aid, as well as the increase of the flocculated particles, so there is no need to separately set up a stirring device.

[0057] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, the sewage purification tank 3 further includes:

[0058] A plurality of third guide plates 39 are arranged at intervals in the lower part of the pool body 31 in the vertical direction and are located below the second guide plate 38. Any two adjacent third guide plates 39 up and down are staggeredly arranged. Each third guide plate 39 is arranged along an inclined section of the pool body 31. The higher ends of each third guide plate 39 are fixed to the inner side wall of the pool body 31 and are seamlessly connected, and the lower ends are separated from the inner side wall of the pool body 31 by a certain distance. The higher end of the topmost third guide plate 39 faces the third opening 381, and one end of the second water pipe 5 is located above the topmost third guide plate 39. By arranging a plurality of third guide plates 39, the sewage first flows through the third opening 381 to the higher end of the topmost third guide plate 39. The flocculation particles sink along the inclined surfaces of each third guide plate 39 to the bottom of the pool body 31 under the action of gravity, which is beneficial to the rapid separation of the flocculation particles from the water. When sucking the water in the pool body 31 into the clear water tank 4 through the second water pipe 5, the plurality of third guide plates 39 can also prevent the sediment at the bottom of the pool body 31 from being disturbed.

[0059] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, the support rod 33 is cylindrical and is coaxially arranged with the dispersion plate 32.

[0060] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, each first opening 351 is circular ring-shaped, and the center of the circle is located on the axis of the support rod 33. Each second plate body 36 is circular ring-shaped, and the center of the circle is located on the axis of the support rod 33.

[0061] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, the outer edges of each first guide plate 37 are fixed to the inner side wall of the pool body 31 and are seamlessly connected.

[0062] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, it further includes:

[0063] A third water pipe 6, one end of which is communicated with the sewage outlet and the other end is communicated with the sedimentation tank 1. The sediment in the pool body 31 is transported to the sedimentation tank 1 through the third water pipe 6, and the sludge sedimentated in the sedimentation tank 1 is discharged by a grab and air-dried naturally.

[0064] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, multiple circles of first baffles 361 are arranged on both the first part and the third part of each second plate body 36. The adjacent two circles of first baffles 361 on the first part and the third part of each second plate body 36 are arranged staggeredly, that is, not opposite to each other. The first baffles 361 at the top and bottom of each second plate body 36 are respectively connected to the bottom of the first plate body 35 above it and the top of the first plate body 35 below it. Each first baffle 361 gradually slopes downward from its top to its bottom. The top of the first baffle 361 at the top of each second plate body 36 is closer to the edge of the corresponding second plate body 36 than its bottom. The bottom of the first baffle 361 at the bottom of each second plate body 36 is closer to the edge of the corresponding second plate body 36 than its top. From top to bottom, the included angle between each circle of first baffles 361 and the vertical direction gradually increases, that is, from top to bottom, the inclination angle of the first baffle 361 becomes larger and larger, and the first baffle 361 gets closer and closer to the horizontal. When the sewage flows downward after passing through the uppermost first opening 351, the disturbing effect of the first baffle 361 on the water flow weakens in turn. When the disturbing effect is strong in the early stage, it is beneficial to form large and dense floc structures. After the disturbing effect decreases, it can avoid the vortex generated in the later stage of flocculation from being too large and cutting the formed flocs.

[0065] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, multiple circles of second baffles 352 are arranged at intervals on the top of the uppermost first plate body 35. Each circle of second baffles 352 is arranged at intervals along the circumferential direction of the corresponding first plate body 35 and is located outside the corresponding first opening 351. Each second baffle 352 is arranged vertically, and the top of each second baffle 352 is fixedly connected to the bottom of the dispersion plate 32. The adjacent two circles of second baffles 352 are arranged staggeredly, that is, not opposite to each other. Since each second baffle 352 is arranged vertically, the disturbing effect of the second baffle 352 on the water flow is the strongest, which is more beneficial to form large and dense floc structures.

[0066] In another solution, in the coal-containing sewage treatment device of the bulk cargo terminal, the through hole 371 is circular, and the center of the through hole 371 is on the axis of the support rod 33. Among any two adjacent first guide plates 37 up and down, the distance between the edge of the top surface and the edge of the bottom surface of the upper first guide plate 37 ≤ the distance between the edge of the bottom surface and the edge of the top surface of the upper first guide plate 37 ≤ the distance between the middle of the top surface and the middle of the bottom surface of the lower first guide plate 37, so that during the sewage flow process, the flow space gradually increases, which helps the rapid growth of particles and can also reduce the breakage of large-sized particles.

[0067] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. Bulk coal sewage treatment device at bulk cargo terminal, characterized in that Comprising: A sedimentation tank, whose water inlet is communicated with a pipe for introducing coal-containing sewage; A first water pipe, one end of which is communicated with the water outlet of the sedimentation tank; A sewage purification tank, which comprises: A tank body, which is cylindrical. The other end of the first water pipe vertically penetrates through the center of the top of the tank body, and a sewage discharge port is arranged at the bottom of the tank body; A dispersion plate, which is internally hollow and has an open bottom in a conical shape, and is coaxially arranged with the tank body. The dispersion plate is spaced from the inner side wall of the tank body by a certain distance. The dispersion plate is located below the other end of the first water pipe and is opposite to and spaced from the end of the other end of the first water pipe by a certain distance. The side wall of the dispersion plate is a hollow structure, and a plurality of first liquid outlet holes are arranged at intervals along the circumferential direction of the side wall of the dispersion plate. The plurality of first liquid outlet holes are located between the outer wall and the inner wall of the side wall of the dispersion plate and are communicated with the hollow structure; A support rod, which is internally hollow. The top of the support rod is connected to the top of the dispersion plate and the inside is communicated with the hollow structure; a plurality of second liquid outlet holes are arranged at intervals at the bottom of the support rod; A partition plate, which is arranged inside the support rod and divides the inside of the support rod into an upper cavity and a lower cavity; A plurality of first plate bodies, which are arranged at intervals in the vertical direction below the dispersion plate. Each first plate body is circular and horizontally arranged. Each first plate body is fixedly connected to the inner side wall of the upper part of the tank body. The support rod passes through each first plate body and is fixedly connected to each first plate body. Each first plate body is provided with a first opening, and each first opening is arranged around the support rod. The edge of the side wall of the dispersion plate is opposite to the part outside the first opening on the topmost first plate body; A plurality of second plate bodies, and an annular second plate body is horizontally arranged between any two adjacent first plate bodies up and down. Each second plate body is spaced from the inner side wall of the tank body and the outer side wall of the support rod by a certain distance. Any second plate body includes a first part, a second part and a third part. The second part is opposite to the first openings above and below it. The first part and the third part are respectively located outside and inside the second part. At least one circle of first baffles is arranged at intervals at the top and bottom of the first part and the third part of each second plate body. Each circle of first baffles is arranged at intervals along the circumferential direction of the corresponding second plate body; at least one circle of first baffles at the top and / or bottom of each second plate body is connected to the first plate body above and / or below it; A plurality of first guide plates, which are arranged at intervals in the vertical direction below the lowermost first plate body. Each first guide plate is internally hollow. The top surface of each first guide plate gradually depresses downward from its edge to the middle, and the bottom surface is horizontal. A through hole is respectively arranged in the middle of the top surface of each first guide plate. The support rod passes through each through hole and the bottom of each first guide plate and is fixedly connected to the bottom of each first guide plate. The size of each through hole is larger than the outer diameter of the support rod. The lowermost first opening is opposite to the side wall of the uppermost first guide plate; an edge of the bottom of each first guide plate is provided with a second opening, and each second opening is arranged around the support rod; The second guide plate, the top surface of which gradually concaves downward from its edge towards the middle, the bottom surface is horizontal, a cavity is formed between the top surface and the bottom surface of the second guide plate, the middle of the top surface of the second guide plate is open and is opposite to the plurality of second liquid outlet holes and is separated by a certain distance, there is a spiral flow guiding groove between the top surface and the bottom surface of the second guide plate, the starting end of the flow guiding groove is located in the middle of the second guide plate, a third opening is arranged at the edge of the bottom surface of the second guide plate, and the third opening is communicated with the end of the flow guiding groove; The first chemical adding device, which contains a coagulant therein, and the first chemical adding device is communicated with the upper cavity through a pipeline; The second chemical adding device, which contains a coagulant aid therein, and the second chemical adding device is communicated with the lower cavity through a pipeline; The clear water tank; The second water pipe, one end of which is communicated with the lower part of the tank body and the other end is communicated with the clear water tank.

2. The coal-containing sewage treatment device for bulk cargo terminals according to claim 1, characterized in that The sewage purification tank further comprises: A plurality of third guide plates, which are arranged at intervals in the vertical direction in the lower part of the tank body and are located below the second guide plate, any two adjacent third guide plates up and down are staggered, each third guide plate is arranged along an inclined section of the tank body, the higher end of each third guide plate is fixed to the inner side wall of the tank body and is seamlessly connected, the lower end is separated from the inner side wall of the tank body by a certain distance, the higher end of the third guide plate at the uppermost part is opposite to the third opening, and one end of the second water pipe is located above the third guide plate at the uppermost part.

3. The coal-containing sewage treatment device for a bulk cargo terminal according to claim 1, characterized in that The support rod is cylindrical and is coaxially arranged with the dispersion plate.

4. The coal-containing sewage treatment device for bulk cargo terminals according to claim 1, characterized in that, Each first opening is circular ring-shaped and the center of the circle is located on the axis of the support rod, each second plate body is circular ring-shaped and the center of the circle is located on the axis of the support rod.

5. The coal-containing sewage treatment device for bulk cargo terminals according to claim 1, characterized in that The outer edges of each first guide plate are fixed to the inner side wall of the tank body and are seamlessly connected.

6. The coal-containing sewage treatment device for bulk cargo terminals according to claim 1, wherein It further comprises: The third water pipe, one end of which is communicated with the sewage outlet and the other end is communicated with the sedimentation tank.

7. The coal-containing sewage treatment device for bulk cargo terminals according to claim 1, characterized in that A plurality of circles of first baffles are arranged on the first part and the third part of each second plate body, the adjacent two circles of first baffles on the first part and the third part of each second plate body are staggered, the top and bottom first baffles of each second plate body are respectively connected to the bottom of the first plate body above it and the top of the first plate body below it, each first baffle gradually inclines downward from its top to its bottom, the top of the first baffle at the top of each second plate body is closer to the edge of the corresponding second plate body than its bottom, the bottom of the first baffle at the bottom of each second plate body is closer to the edge of the corresponding second plate body than its top, and from top to bottom, the included angle between each circle of first baffles and the vertical direction gradually increases.

8. The coal-containing sewage treatment device for bulk cargo terminals according to claim 7, characterized in that, A plurality of circles of second baffles are arranged at intervals on the top of the first plate body at the uppermost part, each circle of second baffles is arranged at intervals along the circumferential direction of the corresponding first plate body and is located outside the corresponding first opening, each second baffle is vertically arranged, and the top of each second baffle is fixedly connected to the bottom of the dispersion plate, and the adjacent two circles of second baffles are staggered.

9. The coal-containing sewage treatment device for bulk cargo terminals according to claim 3, wherein, The through hole is circular, and the center of the through hole is on the axis of the support rod. Among any two adjacent first guide plates above and below, the distance between the edge of the top surface and the edge of the bottom surface of the upper first guide plate ≤ the distance between the edge of the bottom surface of the upper first guide plate and the edge of the top surface of the lower first guide plate ≤ the distance between the middle of the top surface and the middle of the bottom surface of the lower first guide plate.

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