Marine sewage treatment device and method based on constructed wetland method

Abstract

The invention belongs to the technical field of sewage treatment, and discloses a marine sewage treatment device and method based on an artificial wetland method.The device comprises a treatment module, the left side of the treatment module is connected with a marine aquaculture area, the right side of the treatment module is connected with an artificial wetland area, and the device further comprises a motor winding module and a feeding module which are arranged above the treatment module; the movable module is mounted in the processing module; wherein the processing module comprises two shells, and limiting grooves for limiting rotation of the movable module are formed in the two sides of an inner cavity of each shell; through cooperation of structures such as the movable module, the feeding module and the treatment module, the mixing effect of sewage and a microbial agent at the initial end of the wetland is improved, and when the sewage rushes into the shell, it is ensured that the microbial agent is rapidly and fully mixed with the sewage at the initial end of the wetland and activates metabolism, and the denitrification efficiency of the initial stage of the wetland is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to a marine sewage treatment device and method based on an artificial wetland method. Background Art

[0002] In the process of using seawater for aquaculture, aquaculture organisms will produce a large amount of feces, leftover bait and metabolites. If the pollutants are discharged directly into the marine environment without treatment, it will cause water quality deterioration and affect the growth and health of aquaculture organisms. The existing artificial wetland method is to establish a seawater artificial wetland below the sewage outlet of the seawater aquaculture area as a wastewater treatment system, use artificial wetlands to simulate the functions of natural wetlands for treatment, and place powdered salt-tolerant bacteria near the water inlet of the artificial wetland to improve the denitrification efficiency in the initial stage and prevent sewage from being directly discharged into the wetland, resulting in nitrogen and phosphorus eutrophication of the wetland water body. However, the existing bacterial agents in the artificial wetland method are all spread during the normal discharge of sewage, which makes it impossible for the bacterial agents and sewage to be fully mixed at the initial end of the wetland before being discharged into the wetland. When the sewage is discharged into the initial section of the wetland without being fully mixed with the bacterial agents, it will delay the wetland's ability to treat sewage, so it needs to be improved. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a marine sewage treatment device and method based on artificial wetland method.

[0004] To achieve the above object, the present invention provides the following technical solution: a marine sewage treatment device based on artificial wetland method, comprising a treatment module, the left side of the treatment module is connected to the marine aquaculture area, the right side is connected to the artificial wetland area, and further comprising:

[0005] A motor reeling module and a feeding module are arranged above the processing module;

[0006] An activity module installed inside the processing module;

[0007] Wherein, the processing module comprises two shells, and limiting grooves for rotationally limiting the movable module are respectively provided on both sides of the inner cavity of the shells, and abutment rods for resisting the movable module are installed on the inner walls of both sides of the shells;

[0008] The movable module comprises a baffle, both ends of which are movably sleeved inside the shell, and an outer wall of the baffle at one end inside the shell is provided with a first spring sheet for resetting the baffle, and a mesh plate and a flip assembly are provided inside the baffle;

[0009] The mesh plate includes a plate body movably connected to the inside of the baffle, partitions are fixed on both sides of the plate body through connecting rods, and the top of the plate body is connected to the motor winding module, and a first coarse filter membrane is installed on the surface of the plate body; the flip assembly includes a rotating plate hinged at the lower end of the baffle, and the top of the rotating plate is connected to the baffle through the second coarse filter membrane.

[0010] Preferably, a guide plate and a guide block are installed on the top and both sides of the inner cavity of the shell, respectively, and the guide block has an arc shape;

[0011] One side of the shell is connected with a connecting pipe.

[0012] Preferably, the feeding module includes an air compressor, one end of which is connected to a first pipe connected to the inner cavity of the baffle, and the outer wall of the first pipe is movably connected to the inner wall of the limiting groove, and elastic sealing membranes for sealing the shell are respectively installed on both sides of the first pipe in the limiting groove.

[0013] Preferably, the connecting pipe includes a second pipe, one end of which is plugged into the interior of the shell, the other end of the second pipe is equipped with an outlet pipe connected to the water distribution pipe at the bottom of the artificial wetland area, and a first solenoid valve is provided at the connecting end of the second pipe and the inner cavity of the shell.

[0014] Preferably, a rectangular groove for enabling the rotating plate to move is provided at the lower end of the baffle, and the top of the second coarse filter membrane is fixedly connected to the top surface of the inner cavity of the rectangular groove;

[0015] The upper end of the baffle is hollow and is used for placing the mesh plate. The baffle is inclined in the initial state of the inner cavity of the shell.

[0016] Preferably, the outer wall of the first coarse filtration membrane is in contact with the baffle;

[0017] The first coarse filter membrane will intercept and adsorb the residual bait, feces and organic debris carried in the sewage.

[0018] Preferably, the outer wall of the hinged end of the rotating plate and the baffle is sleeved with a second spring sheet for resetting, and the second coarse filtration membrane is in a folded shape in the initial state.

[0019] Preferably, one end of the rotating plate abuts against the abutment rod;

[0020] When the baffle drives the rotating plate to gradually turn over and the rotating plate is blocked by the stop rod, the rotating plate is forced to turn over and pull the second coarse filter membrane to unfold.

[0021] Preferably, a second solenoid valve is installed on the outer wall of the contact end of the first pipeline with the movable module, and a section of the first pipeline is made of a rubber hose;

[0022] A triangular protrusion is arranged at the bottom of the inner cavity of the shell.

[0023] The present invention also proposes a method for treating marine sewage based on an artificial wetland method, and the treatment method is as follows:

[0024] S1. Open the gate valve of the upper sewage outlet of the marine aquaculture area through the existing power control system to allow the sewage to slowly flow downward from the inside, and at the same time start the motor reeling module so that the bottom end of the motor reeling module pulls the plate body and the baffle and the flip assembly to gradually flip upward;

[0025] S2, the bacterial agent reserved in the first pipeline will be transported to the reserved area of ​​the plate body in the baffle through the air compressor before this, so that when the plate body moves upward in the baffle, the partition plate is driven by the connecting rod to release the sealing effect on the baffle notch, and the bacterial agent will be discharged from the inside of the baffle to the outside;

[0026] S3. When the sewage is guided by the triangular protrusions and guide blocks inside the shell and "sways", it is promoted to ensure that the bacterial agent is quickly mixed with the sewage at the initial end of the artificial wetland and activates metabolism;

[0027] At the same time, the plate body will drive the first coarse filter membrane to move outward from the inside of the baffle synchronously, and the fish bait, feces and organic debris left in the marine aquaculture area will be intercepted and adsorbed by the first coarse filter membrane;

[0028] As the plate body drives the baffle to gradually turn over, it will be blocked by the rod, so that the rotating plate drives the second coarse filter membrane to unfold, which improves the sewage treatment effect and allows the sewage to flow out from the area below the baffle to avoid the phenomenon of sewage stagnation.

[0029] S4, the first solenoid valve on the second pipe can be opened to allow the mixture of sewage and bacterial agent in the initial stage to flow into the outlet pipe through the second pipe, and then replenish the water distribution pipe in the artificial wetland area through the outlet pipe;

[0030] When the gate valve of the upper sewage outlet of the marine aquaculture area is closed, some sewage will remain under the movable module. At this time, by loosening the motor winding module, the baffle plate is quickly turned downward through the first spring sheet and beats the remaining sewage. By utilizing the impact of the water body and the movement of the first coarse filter membrane descending inside the baffle plate, the remaining fish bait, feces and organic debris intercepted and attached to the side wall of the baffle plate and the surface of the first coarse filter membrane are scraped off, fall from the movable module, and gradually settle inside the shell.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention improves the mixing effect of sewage and bacterial agent at the initial end of the wetland by arranging the coordination of structures such as the movable module, the feeding module and the processing module. When sewage flows into the shell, the triangular protrusions, the guide blocks and the movable module on the shell are pulled so that the sewage is trapped and "swims" inside the shell. At the same time, the bacterial agent is driven to be discharged outward through the stretched plate body and fully mixed with the sewage, so as to ensure that the bacterial agent is quickly and fully mixed with the sewage at the initial end of the wetland and activates metabolism, thereby improving the denitrification efficiency in the initial stage of the wetland.

[0033] The present invention arranges the mesh plate and the flip assembly and other structures to cooperate, and the plate body drives the first coarse filter membrane to move outward from the inside of the baffle plate, and the fish bait, feces and organic debris remaining in the marine aquaculture area will be intercepted and adsorbed by the first coarse filter membrane. At the same time, the plate body drives the baffle plate to gradually flip and be blocked by the rod, so that the second coarse filter membrane is gradually unfolded, thereby improving the treatment and filtering effect of the active module on marine sewage;

[0034] The present invention cooperates with structures such as the movable module and the motor winding module. When the sewage is not discharged through the shell, the motor winding module is released, so that the baffle plate is quickly turned downward through the first spring sheet and beats the remaining sewage. By utilizing the impact of the water body and the movement of the first coarse filter membrane descending inside the baffle plate, the fish bait, feces and organic debris intercepted and attached to the side wall of the baffle plate and the surface of the first coarse filter membrane can be scraped off smoothly, fall from the movable module, and gradually settle inside the shell, thereby ensuring the reuse rate of the movable module.

[0035] The present invention arranges the coordination of structures such as a shell and a connecting pipe, and the specific number of shells to be installed can be set according to the actual application occasion. Multiple shells improve the discharge efficiency and filtering effect of sewage. At the same time, the mixture after the sewage and the bacterial agent are mixed can be discharged into the water distribution pipe below the wet area through the second pipe and the outlet pipe, thereby improving the sewage treatment effect in the wet area. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the present invention;

[0038] Figure 3 It is a schematic diagram of the structural coordination relationship between the activity module and the processing module of the present invention;

[0039] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0040] Figure 5 It is a schematic diagram of the structural matching relationship between the housing and the motor retracting module of the present invention;

[0041] Figure 6 It is a schematic diagram of the structural coordination relationship between the movable module and the motor winding module of the present invention;

[0042] Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure at B in the middle;

[0043] Figure 8 It is a schematic diagram of the subdivision structure of the activity module of the present invention;

[0044] Fig. 9 It is a schematic diagram of the subdivision structure of the screen plate of the present invention;

[0045] Fig.10 It is a schematic diagram of the structural matching relationship between the partition and the plate body of the present invention;

[0046] Fig.11 It is a schematic diagram of the structural coordination relationship between the plate body and the first coarse filtration membrane of the present invention.

[0047] In the figure: 1. processing module; 11. shell; 12. guide plate; 13. guide block; 14. limit groove; 15. push rod; 2. motor winding module; 3. feeding module; 31. air compressor; 32. first pipeline; 4. connecting pipe; 41. second pipeline; 42. outlet pipe; 5. movable module; 51. baffle; 52. mesh plate; 521. plate body; 522. connecting rod; 523. partition; 524. first coarse filter membrane; 53. flip assembly; 531. rotating plate; 532. second coarse filter membrane. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] like Figures 1 to 11 As shown, the present invention provides a marine sewage treatment device based on artificial wetland method, including a treatment module 1, the left side of the treatment module 1 is connected to the marine aquaculture area, the right side is connected to the artificial wetland area, and also includes:

[0050] A motor winding module 2 and a feeding module 3 are arranged above the processing module 1;

[0051] An active module 5 installed inside the processing module 1;

[0052] The processing module 1 includes two shells 11, and the two sides of the inner cavity of the shell 11 are respectively provided with limit grooves 14 for rotationally limiting the movable module 5, and the inner walls of the two sides of the shell 11 are installed with stop rods 15 for contacting the movable module 5;

[0053] The movable module 5 includes a baffle 51, both ends of which are movably sleeved inside the housing 11, and an outer wall of the baffle 51 located at one end inside the housing 11 is installed with a first spring sheet for returning the baffle 51 to its original position, and a mesh plate 52 and a flip assembly 53 are arranged inside the baffle 51;

[0054] The mesh plate 52 includes a plate body 521 movably connected to the inside of the baffle 51, partitions 523 are fixed on both sides of the plate body 521 through connecting rods 522, and the top of the plate body 521 is connected to the motor winding module 2, and a first coarse filter membrane 524 is installed on the surface of the plate body 521; the flip assembly 53 includes a rotating plate 531 hinged at the lower end of the baffle 51, and the top of the rotating plate 531 is connected to the baffle 51 through a second coarse filter membrane 532.

[0055] like Figure 4 , Figure 6 and Figure 8 As shown, a guide plate 12 and a guide block 13 are respectively installed on the top and both sides of the inner cavity of the shell 11, and the guide block 13 has an arc shape;

[0056] A connecting pipe 4 is connected to one side of the housing 11 .

[0057] Adopt the above solution: Combine Figure 4 and Figure 8 It can be seen that the diversion of sewage by the guide plate 12 and the blocking of water flow by the multiple guide blocks 13 when sewage flows into the inner cavity of the shell 11 , thereby enhancing the shaking effect of the water flow in the inner cavity of the shell 11 .

[0058] like Figure 5 , Fig.10 and Fig.11 As shown, the feeding module 3 includes an air compressor 31, one end of which is connected to a first pipe 32 connected to the inner cavity of the baffle 51, and the outer wall of the first pipe 32 is movably connected to the inner wall of the limiting groove 14, and elastic sealing membranes for sealing the shell 11 are respectively installed on both sides of the first pipe 32 in the limiting groove 14.

[0059] The above scheme is adopted: the powdered salt-resistant bacteria agent placed in the inner cavity of the first pipe 32 is transported to the inside of the baffle 51 by the air compressor 31, and is located at the top of both sides of the plate body 521. As for how the air compressor 31 uses high-pressure airflow to push the powdered salt-resistant bacteria agent to the target point, this adopts the existing mature technology and will not be repeated later; and combined with Fig. 9 and Fig.10It can be seen that the powdered salt-resistant bacteria agent located inside the first pipe 32 will be transported to the contact area between the bottom end of the connecting rod 522 and the plate body 521. When the plate body 521 moves upward, it will drive the powdered salt-resistant bacteria agent to move upward from the inside of the baffle 51. At the same time, the partition 523 will gradually release the closing effect on the baffle 51, causing a gap to appear in the baffle 51. At this time, the powdered salt-resistant bacteria agent will be discharged into the interior of the shell 11 through the gap.

[0060] like Figure 2 , Figure 3 and Figures 5 to 7 As shown, the connecting pipe 4 includes a second pipe 41, one end of which is plugged into the interior of the shell 11, and the other end of the second pipe 41 is equipped with an outlet pipe 42 connected to the water distribution pipe at the bottom of the artificial wetland area, and a first solenoid valve is provided at the connecting end of the second pipe 41 and the inner cavity of the shell 11.

[0061] By adopting the above scheme, the mixture of sewage and powdered salt-tolerant bacterial agent inside the shell 11 will first enter the bottom of the artificial wetland area through the second pipe 41 and the outlet pipe 42, and gradually penetrate upward from the area below the artificial wetland area. By first mixing the bacterial agent and sewage near the water inlet of the artificial wetland area and activating the metabolism, the denitrification efficiency of the sewage in the initial stage is improved. When there is no sewage flowing inside the shell 11, the water inlet end of the second pipe 41 is closed by the solenoid valve.

[0062] like Figures 8 to 10 As shown, a rectangular groove is provided at the lower end of the baffle plate 51 to enable the rotating plate 531 to move, and the top of the second coarse filter membrane 532 is fixedly connected to the top surface of the inner cavity of the rectangular groove;

[0063] The upper end of the baffle 51 is hollow and is used to place the mesh plate 52 . The baffle 51 is inclined in the initial state of the inner cavity of the shell 11 .

[0064] The above scheme is adopted: when a small amount of sewage first flows into the interior of the housing 11, the sewage will be partially intercepted by the inclined baffle 51, the mesh plate 52 and the flip assembly 53, so that the sewage will be partially turbulent inside the housing 11. During the turbulence, the powdered salt-tolerant bacteria agent discharged from the mesh plate 52 is used to quickly and fully mix the sewage, thereby improving the denitrification efficiency in the initial stage, thereby enhancing the treatment strength after the sewage is completely discharged;

[0065] At the same time, when the sewage discharge ends, the motor reeling module 2 gradually and quickly loosens the pulling force on the plate body 521, so that the baffle 51, under the action of the first spring sheet, uses the baffle 51 to quickly hit the sewage remaining inside the shell 11, so that the sewage impacts the impurities attached to the movable module 5, causing them to fall and settle in the contact area between the bottom end of the baffle 51 and the shell 11, thereby improving the subsequent reuse rate of the movable module 5 and facilitating the subsequent centralized cleaning of the precipitated impurities.

[0066] like Fig. 9 and Fig.10 As shown, the outer wall of the first coarse filter membrane 524 is in contact with the baffle 51;

[0067] The first coarse filter membrane 524 intercepts and adsorbs the residual bait, feces and organic debris carried in the sewage.

[0068] The above scheme is adopted: when the plate body 521 drives the first coarse filter membrane 524 to move upward from the inside of the baffle 51 and contact the sewage, the first coarse filter membrane 524 will intercept and adsorb the residual bait, feces and organic debris in the sewage. The first coarse filter membrane 524 adopts an integrated design that is installed on the plate body 521 and can be moved to the inside of the baffle 51 at the same time. In the reset state, the plate body 521 together with the first coarse filter membrane 524 enters the inside of the baffle 51, and the baffle 51 is reset and flipped to impact the sewage. The contact surface between the baffle 51 and the first coarse filter membrane 524 will scrape off the residual bait, feces and organic debris on the surface of the first coarse filter membrane 524.

[0069] like Fig.10 As shown, the outer wall of the hinged end between the rotating plate 531 and the baffle plate 51 is sleeved with a second spring sheet for resetting, and the second coarse filter membrane 532 is in a folded shape in the initial state.

[0070] like Figure 4 , Figure 7 and Fig.10 As shown, one end of the rotating plate 531 abuts against the abutment rod 15;

[0071] When the baffle plate 51 drives the rotating plate 531 to gradually turn over and the rotating plate 531 is blocked by the stop rod 15 , the rotating plate 531 is forced to turn over and pull the second coarse filter membrane 532 to unfold.

[0072] The above scheme is adopted: after the rotating plate 531 rotates with the baffle 51, one side of the rotating plate 531 will resist the flipped rotating plate 531 due to the fixed-point design of the support rod 15, so that the rotating plate 531 flips at the lower end of the baffle 51 with the hinged end of the baffle 51 as the axis, and at the same time, the second coarse filter membrane 532 will be in an unfolded state. At this time, the unfolded second coarse filter membrane 532 will intercept and adsorb the sewage.

[0073] like Figure 4 , Figure 8 , Fig. 9 and Fig.11 As shown, a second solenoid valve is installed on the outer wall of the contact end of the first pipe 32 and the movable module 5, and a section of the first pipe 32 is made of a rubber hose;

[0074] A triangular protrusion is provided at the bottom of the inner cavity of the housing 11 .

[0075] The above scheme is adopted: when it is necessary to transport the powdered salt-resistant bacteria agent to the plate body 521 area, the solenoid valve on the first pipe 32 is opened, and the powdered salt-resistant bacteria agent inside the first pipe 32 is transported to the designated position in the plate body 521 by using the air compressor 31. When the transport is completed, the solenoid valve is closed to replenish the powdered salt-resistant bacteria agent inside the first pipe 32. When the powdered salt-resistant bacteria agent in the plate body 521 area is exhausted, the solenoid valve and the air compressor 31 are used again to transport and replenish. Fig.10 It is known that there are rectangular plates on both sides of the lower end of the plate body 521 for closing the first pipe 32. When the plate body 521 drives the rectangular plate at the bottom to move up, the rectangular plate will block the discharge port of the first pipe 32 to prevent sewage from entering the first pipe 32; the installation of the triangular protrusion on the inner cavity of the shell 11 changes the flow direction of the sewage when the sewage slowly flows into the shell 11 at the beginning, so that the sewage will "swim" inside the shell 11, thereby improving the initial mixing effect of the sewage and the bacterial agent.

[0076] The present invention also proposes a method for treating marine sewage based on an artificial wetland method, and the treatment method is as follows:

[0077] S1. Open the gate valve of the upper sewage outlet of the marine aquaculture area through the existing power control system to allow the sewage to slowly flow downward from the inside, and start the motor reeling module 2 at the same time, so that the bottom end of the motor reeling module 2 pulls the plate body 521, the baffle 51 and the flip assembly 53 to gradually flip upward;

[0078] S2, the bacterial agent reserved in the first pipe 32 will be transported to the reserved area of ​​the plate body 521 in the baffle 51 through the air compressor 31 before this, so that when the plate body 521 moves upward in the baffle 51, the connecting rod 522 drives the partition 523 to release the sealing effect on the notch of the baffle 51, and the bacterial agent will be discharged from the inside of the baffle 51 to the outside;

[0079] S3, when the sewage is guided by the triangular protrusions and the guide block 13 inside the shell 11 and "swings", it is then promoted to ensure that the bacterial agent is quickly mixed with the sewage at the initial end of the artificial wetland and activates metabolism;

[0080] At the same time, the plate body 521 will drive the first coarse filter membrane 524 to move outward from the inside of the baffle plate 51 synchronously, and the fish bait, feces and organic debris remaining in the marine aquaculture area will be intercepted and adsorbed by the first coarse filter membrane 524;

[0081] As the plate body 521 drives the baffle plate 51 to gradually turn over, it will be blocked by the stop rod 15, so that the rotating plate 531 drives the second coarse filter membrane 532 to unfold, thereby improving the sewage treatment effect and allowing the sewage to flow out from the area below the baffle plate 51, thereby avoiding the phenomenon of sewage stagnation.

[0082] S4, the first solenoid valve on the second pipe 41 can be opened to allow the mixture of sewage and bacterial agent in the initial stage to flow into the outlet pipe 42 through the second pipe 41, and then replenished into the water distribution pipe in the artificial wetland area through the outlet pipe 42;

[0083] When the gate valve of the upper sewage outlet of the marine aquaculture area is closed, some sewage will remain under the movable module 5. At this time, by loosening the motor winding module 2, the baffle 51 is quickly flipped downward through the first spring leaf and beats the remaining sewage. By utilizing the impact of the water body and the movement of the first coarse filter membrane 524 descending inside the baffle 51, the fish bait, feces and organic debris intercepted and attached to the side wall of the baffle 51 and the surface of the first coarse filter membrane 524 are scraped off, fall from the movable module 5, and gradually settle inside the shell 11.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine sewage treatment device based on artificial wetland method, comprising a treatment module (1), wherein the left side of the treatment module (1) is connected to a marine aquaculture area, and the right side is connected to an artificial wetland area, characterized in that: Also includes: A motor winding module (2) and a feeding module (3) arranged above the processing module (1); An active module (5) installed inside the processing module (1); The processing module (1) comprises two shells (11), and limiting grooves (14) for rotationally limiting the movable module (5) are respectively provided on both sides of the inner cavity of the shell (11), and stop rods (15) for contacting the movable module (5) are installed on the inner walls of both sides of the shell (11); The movable module (5) comprises a baffle (51), both ends of which are movably sleeved inside the shell (11), and an outer wall of the baffle (51) at one end inside the shell (11) is provided with a first spring sheet for resetting the baffle (51), and a mesh plate (52) and a flip assembly (53) are provided inside the baffle (51); The mesh plate (52) comprises a plate body (521) movably clamped inside the baffle (51); partitions (523) are fixed to both sides of the plate body (521) via connecting rods (522); the top of the plate body (521) is connected to the motor reeling module (2); a first coarse filter membrane (524) is installed on the surface of the plate body (521); the flip assembly (53) comprises a rotating plate (531) hinged at the lower end of the baffle (51); the top of the rotating plate (531) is connected to the baffle (51) via a second coarse filter membrane (532).

2. The marine sewage treatment device based on the artificial wetland method according to claim 1 is characterized in that: A guide plate (12) and a guide block (13) are respectively installed on the top and both sides of the inner cavity of the shell (11), and the guide block (13) has an arc shape; A connecting pipe (4) is connected to one side of the housing (11).

3. The marine sewage treatment device based on artificial wetland method according to claim 1 is characterized in that: The feeding module (3) comprises an air compressor (31), one end of the air compressor (31) is connected to a first pipe (32) communicating with the inner cavity of the baffle (51), and the outer wall of the first pipe (32) is movably connected to the inner wall of the limiting groove (14), and elastic sealing membranes for sealing the shell (11) are respectively installed on both sides of the first pipe (32) located in the limiting groove (14).

4. The marine sewage treatment device based on artificial wetland method according to claim 2 is characterized in that: The connecting pipe (4) comprises a second pipe (41), one end of the second pipe (41) is plugged into the interior of the housing (11), the other end of the second pipe (41) is provided with a water outlet pipe (42) connected to a water distribution pipe at the bottom of the artificial wetland area, and a first solenoid valve is provided at the connection end of the second pipe (41) and the inner cavity of the housing (11).

5. The marine sewage treatment device based on artificial wetland method according to claim 1 is characterized in that: A rectangular groove for enabling the rotating plate (531) to move is formed at the lower end of the baffle plate (51), and the top of the second coarse filter membrane (532) is fixedly connected to the top surface of the inner cavity of the rectangular groove; The upper end of the baffle (51) is hollow and is used to place the mesh plate (52); the baffle (51) is inclined in the initial state of the inner cavity of the shell (11).

6. The marine sewage treatment device based on artificial wetland method according to claim 1 is characterized in that: The outer wall of the first coarse filtration membrane (524) is in contact with the baffle (51); The first coarse filtration membrane (524) intercepts and adsorbs the residual bait, feces and organic debris carried in the sewage.

7. The marine sewage treatment device based on artificial wetland method according to claim 1 is characterized in that: A second spring sheet for resetting is sleeved on the outer wall of the hinged end of the rotating plate (531) and the baffle plate (51), and the second coarse filter membrane (532) is in a folded shape in the initial state.

8. The marine sewage treatment device based on artificial wetland method according to claim 7 is characterized in that: One end of the rotating plate (531) is in contact with the abutment rod (15); When the baffle plate (51) drives the rotating plate (531) to gradually turn over and the rotating plate (531) is blocked by the stop rod (15), the rotating plate (531) is forced to turn over and pull the second coarse filter membrane (532) to unfold.

9. The marine sewage treatment device based on artificial wetland method according to claim 3 is characterized in that: A second solenoid valve is installed on the outer wall of the contact end of the first pipeline (32) and the movable module (5), and a section of the first pipeline (32) is made of a rubber hose; The bottom of the inner cavity of the shell (11) is provided with a triangular protrusion.

10. A method for treating marine sewage based on artificial wetland method, applied to the marine sewage treatment device based on artificial wetland method as claimed in any one of claims 1 to 9, characterized in that: The processing method is as follows: S1, opening the gate valve of the upper sewage outlet of the marine aquaculture area through the existing power control system, allowing the sewage to slowly flow downward from the inside, and at the same time starting the motor reeling module (2), so that the bottom end of the motor reeling module (2) pulls the plate body (521) and the baffle (51) as well as the turning assembly (53) to gradually turn upward; S2, the bacterial agent reserved in the first pipe (32) is previously transported to the reserved area of ​​the plate body (521) in the baffle (51) through the air compressor (31), so that when the plate body (521) moves upward in the baffle (51), the connecting rod (522) drives the partition (523) to release the sealing effect on the notch of the baffle (51), and the bacterial agent is discharged from the inside of the baffle (51) to the outside; S3, when the sewage is guided by the triangular protrusions and the guide block (13) inside the shell (11) and a "swinging" phenomenon occurs, the bacterial agent is ensured to be quickly mixed with the sewage at the initial end of the artificial wetland and activate metabolism; At the same time, the plate body (521) will drive the first coarse filter membrane (524) to move outward from the inside of the baffle (51) synchronously, and the fish bait, feces and organic debris remaining in the marine aquaculture area will be intercepted and adsorbed by the first coarse filter membrane (524); As the plate body (521) drives the baffle plate (51) to gradually turn over, it will be blocked by the stop rod (15), so that the rotating plate (531) drives the second coarse filter membrane (532) to unfold, thereby improving the sewage treatment effect and allowing the sewage to flow out from the area below the baffle plate (51), thereby avoiding the phenomenon of sewage stagnating and flowing out; S4, the first solenoid valve on the second pipe (41) can be opened to allow the mixture of sewage and bacterial agent in the initial stage to flow into the outlet pipe (42) through the second pipe (41), and then replenished into the water distribution pipe in the artificial wetland area through the outlet pipe (42); When the gate valve of the sewage outlet in the marine aquaculture area is closed, some sewage will remain under the movable module (5). At this time, by loosening the motor reeling module (2), the baffle (51) is quickly turned downward through the first spring sheet and beats the remaining sewage. By utilizing the impact of the water body and the downward movement of the first coarse filter membrane (524) inside the baffle (51), the fish bait, feces and organic debris intercepted and attached to the side wall of the baffle (51) and the surface of the first coarse filter membrane (524) are scraped off, causing them to fall from the movable module (5) and gradually settle inside the shell (11).

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