Ship domestic sewage treatment device

Abstract

The invention discloses a ship domestic sewage treatment device, which relates to the technical field of ship environmental protection equipment and comprises an aeration bin, a sedimentation bin and a disinfection bin which are sequentially arranged along the water flow direction. A lifting driving assembly and a lifting frame are arranged at the top of the aeration bin, an aeration pipe with side plates is obliquely arranged on the lifting frame, the aeration pipe is driven by a rotary driving assembly to rotate forwards and backwards, and the side plates can be overlapped to form a tile-type isolation plate and are matched with the lifting frame to lift and guide supernate; a vertical partition plate in the sedimentation bin divides an independent sedimentation cavity, the top is inclined, a liftable bottom plate at the bottom scrapes attachments on the partition plate through a tank body, and a scraper assembly returns sludge to the aeration bin for secondary decomposition. The bottom of the aeration bin is communicated with the extrusion cavity, sludge solid-liquid separation and water recovery are achieved, and the disinfection bin is provided with an ultraviolet disinfection lamp set to guarantee that effluent reaches the standard. The device integrates the functions of aeration, sedimentation, backflow and disinfection, is compact in structure, resistant to shaking, thorough in sludge treatment and convenient to maintain, and meets the environment-friendly treatment requirements of ship navigation scenes.

Description

Technical Field

[0001] This invention relates to the field of marine environmental protection equipment technology, and in particular to a marine sewage treatment device. Background Technology

[0002] Ships generate large amounts of domestic sewage and industrial wastewater during navigation. Direct discharge of these wastewaters would severely pollute the marine environment and disrupt the marine ecological balance. According to the International Maritime Organization and relevant environmental regulations, ship sewage must be treated to meet standards before discharge; untreated sewage is strictly prohibited from being discharged indiscriminately. Therefore, ship sewage treatment equipment is crucial for protecting the marine ecological environment and ensuring compliant navigation. Existing ship sewage treatment systems largely adopt the structure of land-based sewage treatment equipment, resulting in numerous compatibility issues. During ship navigation, there are complex working conditions such as continuous rocking and turbulence. Traditional settling chambers are single cavities, and the sludge in the sewage is easily resuspended due to rocking, resulting in low settling efficiency and unstable treatment effect, which is difficult to meet the treatment needs under the dynamic operation of ships. The aeration and water guiding structures are separated, requiring separate aeration devices and isolation water guiding plates. This results in high equipment redundancy, occupies limited space on the ship, and leads to complex piping connections, making it prone to blockages and high maintenance costs. The sludge treatment process is flawed; sludge easily adheres to the inner walls of the equipment and is difficult to clean, and the water in the sludge is not fully recovered, wasting water resources and increasing waste discharge, which is inconsistent with the trend of energy conservation and emission reduction in ships. Furthermore, the poor coordination between components and the lack of precise timing control make them prone to misoperation, leading to substandard effluent quality and environmental compliance risks. In view of the shortcomings of the existing technologies, there is an urgent need for a ship sewage treatment device that is suitable for ship swaying scenarios, has a compact structure, high efficiency in sludge treatment, and stable operation. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention proposes a shipboard sewage treatment device.

[0004] The present invention proposes a shipboard sewage treatment device, comprising an aeration chamber, a sedimentation chamber, and a disinfection chamber arranged sequentially along the sewage treatment flow direction. The aeration chamber and the sedimentation chamber are at the same height, and the disinfection chamber is at a lower height than the sedimentation chamber to form a water level difference. The upper half of the shared wall between the aeration chamber and the sedimentation chamber is provided with a first guide port, and the lower half of the shared wall between the sedimentation chamber and the disinfection chamber is provided with a second guide port. Both the first and second guide ports are provided with openable and closable doors. The top of the aeration chamber is equipped with a lifting drive assembly. The output end of the lifting drive assembly is connected to a lifting frame. Multiple aeration pipes are arranged at intervals along the horizontal direction on the lifting frame. Each aeration pipe is connected to an oxygen supply source, and several aeration through holes are opened on the side wall of each aeration pipe. Side plates are fixedly connected to both sides of each aeration pipe. The lifting frame is also equipped with a rotation drive assembly. The rotation drive assembly is connected to each aeration pipe to drive the aeration pipe to rotate, so that the two side plates can be stacked to form a tile-type isolation plate inclined towards the first guide port. The settling chamber is equipped with multiple parallel vertical partitions spaced along the vertical direction, which divide the interior of the settling chamber into multiple independent settling chambers. The bottom of the settling chamber is equipped with a liftable base plate, which is slidably inserted into each vertical partition. The top of each vertical partition is inclined towards the aeration chamber. When the base plate is raised to its highest point, it is flush with the top of each vertical partition to form a sludge bearing plane. The top of the settling chamber is equipped with a scraper assembly, and the scraping direction of the scraper assembly is directed towards the aeration chamber. The disinfection chamber is equipped with disinfection components.

[0005] Preferably, the aeration chamber has a sludge outlet at the bottom, and a squeezing chamber is connected below the sludge outlet. The squeezing chamber is equipped with a squeezing drive assembly and a squeezing plate. The squeezing plate has several through holes, and the bottom of the squeezing chamber has a waste discharge outlet. A return water pipe is connected to the side wall of the squeezing chamber corresponding to the area below the squeezing plate. A return water pump is installed on the return water pipe, and the output end of the return water pipe extends to the middle and lower part of the settling chamber. When the squeezing drive assembly drives the squeezing plate to squeeze the sludge, the water in the sludge is discharged through the through holes of the squeezing plate and then flows into the settling chamber through the return water pipe. The squeezed waste falls to the waste discharge outlet and is discharged. By performing solid-liquid separation on the sludge, the water in the sludge can be recovered for reprocessing, while reducing the amount of waste discharged and reducing the pressure on ship waste storage and treatment.

[0006] Preferably, the lifting drive component is a cylinder, the cylinder body is fixed to the top of the aeration chamber, and the piston rod of the cylinder is fixedly connected to the lifting frame. The cylinder drive has the characteristics of rapid response and stable operation, and can accurately drive the lifting frame to achieve lifting action. It is suitable for the vibration environment during ship navigation and ensures the stability of the lifting of the aeration pipe and the water guiding of the tile-type isolation plate.

[0007] Preferably, the rotary drive assembly includes a waterproof drive component, a worm gear, and turbines located at the ends of each aeration pipe. The waterproof drive component is fixed inside the lifting frame, and a sealing structure is provided inside the lifting frame corresponding to the installation area of ​​the drive component. The output end of the waterproof drive component is fixedly connected to the worm gear to drive the worm gear to rotate. Each turbine is meshed with the worm gear, and the rotation of the worm gear synchronously drives the rotation of all aeration pipes. The waterproof drive component has a protection rating of not less than IP65. The worm gear drive can realize the synchronous rotation of multiple aeration pipes, ensuring the accuracy of side plate stacking. The waterproof drive component, together with the sealing structure, can effectively prevent water vapor in the water environment from entering the drive component and causing damage, thereby improving the service life and operational reliability of the assembly.

[0008] Preferably, the side plate edges of the tile-type isolation plate are provided with elastic sealing strips. The elastic sealing strips are made of rubber. The rubber elastic sealing strips can fill the gaps between adjacent side plates, improve the sealing performance of the tile-type isolation plate, prevent sludge from leaking out of the gaps during water diversion, ensure the purity of the sewage introduced into the sedimentation chamber, and guarantee the subsequent sedimentation effect.

[0009] Preferably, the tilt angle of the top of the vertical partition is 15°-20°. This angle range can ensure that the sludge slides and converges towards the aeration chamber under its own gravity, which is convenient for subsequent scraper assembly to scrape it back for processing. It can also prevent the sludge from sliding off the inclined surface when the ship is rocking, thus ensuring the settling stability in the settling chamber.

[0010] Preferably, the scraper assembly includes a screw drive assembly, a scraper body, and a guide rail; the screw drive assembly includes a screw motor and a screw body, the screw motor is fixed to the crossbeam at the top of the settling chamber, the screw body is arranged along the scraping direction of the scraper and fixedly connected to the output end of the screw motor, a nut seat is fitted on the screw body, and the nut seat is fixedly connected to the middle of the scraper body; the guide rail is laid on the top of the settling chamber along the scraping direction of the scraper, and both ends of the scraper body slide in cooperation with the guide rail; a polyurethane elastic scraper strip is provided at the bottom of the scraper body, the elastic scraper strip is detachably fixed to the bottom of the scraper body by bolts, and the elastic scraper strip is in close contact with the sludge bearing surface. The screw drive enables the scraper body to move smoothly and accurately, and the guide rail further improves the scraping stability; the polyurethane elastic scraper strip can closely fit the bearing surface to ensure thorough sludge removal, and the detachable design facilitates replacement after wear, reducing maintenance costs.

[0011] Preferably, the disinfection component is an ultraviolet disinfection lamp group, which is spaced apart along the length of the disinfection chamber. Ultraviolet disinfection does not require the addition of chemical agents and will not produce secondary pollution, thus meeting the environmental protection requirements of ships. The spaced arrangement along the length can achieve comprehensive coverage disinfection of sewage, improve disinfection uniformity, and ensure that the effluent meets the discharge standards.

[0012] Preferably, the bottom of the settling chamber is equipped with a base plate drive assembly, which is a lifting cylinder. At least two sets of lifting cylinders are spaced apart along the width of the settling chamber, and the output end of each lifting cylinder is fixedly connected to one side of the bottom of the base plate. The base plate has grooves that match each vertical partition. The vertical partitions are embedded in the corresponding grooves. When the base plate is raised, the inner wall of the groove can scrape off the attachments on the vertical partitions. At least two sets of lifting cylinders can drive the base plate to rise and fall smoothly, avoiding tilting and jamming of the base plate. During the raising of the base plate, the inner wall of the groove can automatically scrape off the attachments on the vertical partitions, eliminating the need for manual cleaning, reducing maintenance workload, and preventing the accumulation of attachments from affecting the settling effect.

[0013] The shipboard sewage treatment device proposed in this invention has the following beneficial effects: 1. It has strong adaptability and outstanding anti-swaying ability. The settling chamber is divided into multiple independent settling chambers by partitions, which can effectively limit the surge amplitude of sewage when the ship is rocking, prevent the settled sludge from being resuspended, and significantly improve the settling efficiency and treatment effect stability. 2. The structure is compact and highly integrated. The aeration pipe and side plate are integrated into the aeration chamber. By rotating the aeration pipe, the side plate is stacked to form a tile-like isolation plate, which realizes both aeration and water isolation functions at the same time. There is no need to set up an additional independent water isolation device, reducing equipment redundancy and saving ship space. 3. Thorough sludge treatment and high resource recycling rate: The bottom plate of the settling tank is connected to the tank body and the baffle. During the lifting process, the sludge on the inner wall of the baffle can be automatically scraped off. With the help of the scraper, the sludge is scraped back to the aeration tank for recycling. After solid-liquid separation in the squeezing chamber, the sludge at the bottom of the aeration tank is recycled to the settling tank for secondary treatment through the return water pipeline. The waste residue is discharged separately through the waste residue outlet, which not only avoids sludge accumulation but also improves water resource utilization. 4. Stable operation and low maintenance cost. Each component adopts a mature cylinder and screw drive structure, combined with a sealing and waterproof design, which is suitable for the vibration of ships and the water environment. Key vulnerable parts, such as elastic scraper strips and sealing strips, adopt a detachable design, which facilitates later maintenance and replacement and reduces operation and maintenance costs. 5. High degradation efficiency and thorough wastewater purification: During the aeration stage, the forward and reverse rotation of the aeration pipes and the up and down movement of the lifting frame work together to improve the contact efficiency between wastewater and oxygen, thereby enhancing the decomposition of organic pollutants. At the same time, the design of sedimentation and reflux in the settling chamber further improves the pollutant removal rate. Only the recalcitrant waste residue is discharged through the waste residue discharge outlet, reducing pollutant emissions. 6. Precise and leak-free water diversion: The use of a lift-type water diversion system replaces natural diversion, avoiding disturbance of the sediment at the bottom of the aeration chamber during the water diversion process; the inclined design of the sedimentation chamber bottom plate combined with the sedimentation reflux structure can effectively prevent sediment from leaking with the supernatant, ensuring the purity of the sewage entering the disinfection chamber.

[0014] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a top view of the tile-type isolation plate in this invention; Figure 5 This is a schematic diagram of the settling chamber in this invention; Figure 6 This is a schematic diagram of the structure of the settling chamber after the bottom plate is raised in this invention; Figure 7 This is a partial structural diagram of the aeration chamber in the aeration state of the present invention; Figure 8 This is a schematic diagram of the process by which the aeration chamber introduces wastewater into the sedimentation chamber in this invention. The following are the labels in the diagram: 1. Aeration chamber; 2. Sedimentation chamber; 3. Disinfection chamber; 4. First guide port; 5. Second guide port; 6. Chamber door; 7. Squeezing chamber; 701. Squeezing plate; 702. Return water pipe; 703. Waste discharge port; 101. Lifting drive assembly; 102. Lifting frame; 103. Aeration pipe; 104. Aeration through hole; 105. Side plate; 106. Waterproof drive component; 107. Worm gear; 108. Turbine; 201. Baffle plate; 202. Bottom plate; 203. Scraper. Detailed Implementation

[0016] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] like Figures 1-8 The illustrated ship sewage treatment device includes an aeration chamber 1, a settling chamber 2, and a disinfection chamber 3 arranged sequentially along the sewage treatment flow direction, forming a natural flow guiding force through the height difference; a first guide port 4 is opened on the upper half of the shared chamber wall of the aeration chamber 1 and the settling chamber 2, and a second guide port 5 is opened on the lower half of the shared chamber wall of the settling chamber 2 and the disinfection chamber 3; electromagnetically driven chamber doors 6 are installed at both the first guide port 4 and the second guide port 5, and an annular rubber sealing ring is embedded on the edge of the chamber door 6 to ensure a tight seal and prevent leakage.

[0018] A lifting cylinder, or lifting drive assembly 101, is installed on the top of the aeration chamber 1. The cylinder body of the lifting cylinder is bolted to the steel frame on the top of the aeration chamber 1. The piston rod extends vertically downward and is welded and fixed to the lifting frame 102. Along the inclined direction towards the first guide port 4, the lifting frame 102 has an inclination angle of 15°, consistent with the tile-type partition plate. Twelve aeration pipes 103 are spaced apart. One end of each aeration pipe 103 is sealed and connected to the oxygen supply pipeline via a rotary joint, and the other end extends into the lifting frame 102 and is fixedly installed with a turbine 108. The aeration pipes 10... The sidewall of the aeration pipe 103 is uniformly provided with aeration through holes 104 with a diameter of 0.8 mm. Each aeration pipe 103 has stainless steel side plates 105 welded to both sides. The edge of the side plate 105 is bonded with a rubber elastic sealing strip 26. The lifting frame 102 is fixedly installed with a waterproof stepper motor, i.e. a waterproof drive component 106, with a protection level of IP67, through a sealed chamber. The output end of the waterproof stepper motor is fixedly connected to the worm gear 107 through a coupling. The worm gear 107 meshes with the turbine 108 at the end of each aeration pipe 103 to achieve synchronous rotation of the 6 aeration pipes 103.

[0019] The settling chamber 2 has five parallel partitions 201 welded vertically at intervals of 40cm, dividing it into seven independent settling chambers. The tops of the partitions 201 are inclined towards the aeration chamber 1 at an angle of 18°. The bottom of the settling chamber 2 has a liftable stainless steel base plate 202 with grooves that correspond to the five partitions 201. The partitions 201 are embedded in the corresponding grooves and slide against the inner wall of the grooves. Three sets of lifting cylinders, i.e., the base plate drive assembly, are evenly distributed along the width direction at the bottom of the settling chamber 2. The piston rods of the lifting cylinders are welded and fixed to the bottom of the base plate 202. A crossbeam is welded to the top of the settling chamber 2. A scraper 203 is installed on the top. The scraper 203 includes a screw motor, a screw body, a nut seat, a scraper body, and a guide rail. The screw motor is fixed to one end of the crossbeam by bolts. The screw body is set towards the aeration chamber 1 along the scraping direction of the scraper 203 and is connected to the output end of the screw motor through a coupling. The nut seat is sleeved on the screw body and welded to the middle of the scraper body. The guide rail is fixed to both sides of the top of the settling chamber 2 along the length of the screw body. The two ends of the scraper body slide with the guide rail through sliders. A polyurethane elastic scraper is detachably installed at the bottom of the scraper body by bolts. The elastic scraper fits tightly with the sludge bearing plane formed when the bottom plate 202 is raised to the highest point.

[0020] The bottom of the aeration chamber 1 is provided with a sludge outlet. Below the sludge outlet, a compression chamber 7 is connected via a flange. The compression chamber 7 is equipped with a compression cylinder and a compression plate 701. The compression plate 701 has through holes with a diameter of 2mm evenly distributed. The piston rod of the compression cylinder is welded and fixed to the compression plate 701. The compression plate 701 slides and fits against the inner wall of the compression chamber 7. The bottom of the compression chamber 7 is provided with a waste discharge outlet 703. A return water pipe 702 is welded to the side wall corresponding to the area below the compression plate 701. A small submersible pump, i.e., a return water pump, is installed on the return water pipe 702. The output end of the return water pipe 702 extends to the middle and lower part of the settling chamber 2, 0.5m away from the bottom of the chamber.

[0021] Four sets of ultraviolet disinfection lamps are evenly installed along the length of the disinfection chamber 3. The power of each ultraviolet disinfection lamp set is 30W, and the spacing between adjacent lamp sets is 50cm.

[0022] In this embodiment, during operation: 1. Aeration Stage: Ship wastewater is introduced into aeration chamber 1. The lifting cylinder is activated to lower the lifting frame 102, immersing the aeration pipe 103 into the wastewater. The oxygen supply source and waterproof stepper motor are turned on, and oxygen is released into the wastewater through the aeration holes 104 of the aeration pipe 103 to achieve aeration. At the same time, the stepper motor drives the worm gear 107 to rotate, causing each aeration pipe 103 to continuously rotate in both directions (30 seconds forward, 30 seconds reverse in a cycle), keeping the side plate 105 in an open and stirring state. The lifting cylinder is synchronously controlled to drive the lifting frame 102 to move up and down repeatedly, with a lifting stroke of 50 cm and a reciprocating frequency of 1 time / minute. Through the synergistic effect of the forward and reverse stirring of the aeration pipe 103 and the up and down movement of the lifting frame 102, the contact efficiency between wastewater and oxygen is enhanced, improving the decomposition effect of organic pollutants. The aeration process lasts for 60 minutes.

[0023] 2. Lifting and Settling Stage: After aeration, the oxygen supply source and the lifting drive of the lifting frame 102 are turned off, allowing the sewage in the aeration chamber 1 to settle for 20 minutes, so that the sludge can fully settle to the bottom of the chamber. Then, the lifting cylinder is controlled to drive the lifting frame 102 to rise above the sedimentation layer. At a distance of 10cm from the top of the sedimentation layer, the waterproof stepper motor is started to drive the aeration pipe 103 to rotate, so that the side plates 105 of the adjacent aeration pipes 103 overlap to form a tile-type isolation plate facing the first guide port 4. Then, the lifting cylinder is controlled to drive the lifting frame 102 to move slowly upward, lifting the supernatant above it through the tile-type isolation plate. At the same time, the chamber door 6 of the first guide port 4 is opened. The lifted supernatant is guided by the tile-type isolation plate and flows into the independent settling chambers of the settling chamber 2 through the first guide port 4. After the supernatant is delivered, the chamber door 6 of the first guide port 4 is closed, and the sewage settles in the independent settling chambers of the settling chamber 2 for 30 minutes.

[0024] 3. Supernatant delivery and sedimentation return stage: After sedimentation is completed, open the door 6 of the second guide port 5, start the lifting cylinder of the bottom plate drive assembly, and drive the bottom plate 202, which is inclined towards the aeration chamber 1, to move slowly upward. Use the inclined thrust of the bottom plate 202 to push the clarified supernatant in the sedimentation chamber 2 towards the second guide port 5, so that the supernatant flows into the disinfection chamber 3. Since the bottom plate 202 is inclined towards the aeration chamber 1, the sediment at the bottom of the sedimentation chamber 2 will gather towards the aeration chamber 1 under the action of gravity and the thrust of the bottom plate 202, and will not move towards the second guide port 5, thus avoiding sediment leakage. After the supernatant delivery is completed, close the door 6 of the second guide port 5, control the bottom plate 202 to descend and reset, and at the same time start the screw motor of the scraper 203 to drive the scraper body to move towards the aeration chamber 1 along the guide rail, scraping the sludge on the sludge bearing surface and the sediment gathered at the bottom of the sedimentation chamber 2 back into the aeration chamber 1 for secondary decomposition treatment.

[0025] 4. Disinfection and discharge stage: Open the chamber door 6 of the second diversion port 5. The clarified supernatant in the sedimentation chamber 2 flows into the disinfection chamber 3 through the second diversion port 5. Turn on the ultraviolet disinfection lamp group to disinfect the sewage (disinfection time 20 minutes). After the disinfection meets the standards, it is discharged.

[0026] 5. Recalcitrant sludge compression treatment stage: For sludge that cannot be degraded even after multiple recirculation decompositions in aeration chamber 1, the sludge outlet at the bottom of aeration chamber 1 is opened periodically to allow the recalcitrant sludge to fall into the compression chamber 7; the compression cylinder is activated to drive the compression plate 701 to compress the sludge downwards, and the water in the sludge flows into the lower part of the compression chamber 7 through the through hole of the compression plate 701, and is pumped back to the settling chamber 2 for secondary settling through the return water pipe 702 and the return water pump; after compression is completed, the waste residue outlet 703 is opened to discharge and collect the compressed waste residue for treatment.

[0027] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shipboard sewage treatment device, characterized in that, It includes an aeration chamber (1), a sedimentation chamber (2) and a disinfection chamber (3) arranged sequentially along the sewage treatment flow direction. The aeration chamber (1) and the sedimentation chamber (2) are at the same height, and the disinfection chamber (3) is at a lower height than the sedimentation chamber (2) to form a water level difference. The upper half of the shared wall between the aeration chamber (1) and the sedimentation chamber (2) is provided with a first guide port (4), and the lower half of the shared wall between the sedimentation chamber (2) and the disinfection chamber (3) is provided with a second guide port (5). Both the first guide port (4) and the second guide port (5) are provided with openable and closable chamber doors (6). The top of the aeration chamber (1) is provided with a lifting drive assembly (101). The output end of the lifting drive assembly (101) is connected to a lifting frame (102). Multiple aeration pipes (103) are spaced apart on the lifting frame (102) along the inclined direction toward the first guide port (4). Each aeration pipe (103) is connected to an oxygen supply source, and several aeration through holes (104) are opened on the side wall of the aeration pipe (103). Side plates (105) are fixedly connected to both sides of each aeration pipe (103). The lifting frame (102) is also provided with a rotation drive assembly. The rotation drive assembly is connected to each aeration pipe (103) to drive the aeration pipe (103) to rotate, so that the two side plates (105) can be stacked to form a tile-type isolation plate inclined toward the first guide port (4). The settling chamber (2) is provided with multiple parallel vertical partitions (201) spaced vertically inside, which divide the settling chamber (2) into multiple independent settling chambers; the bottom of the settling chamber (2) is provided with a liftable bottom plate (202), which can be slidably inserted into each vertical partition (201). The top of the vertical partition (201) is inclined towards the aeration chamber (1), and when the bottom plate (202) is raised to the highest point, it is flush with the top of each vertical partition (201) to form a sludge bearing plane; the top of the settling chamber (2) is provided with a scraper (203) assembly, which is set towards the aeration chamber (1) in the scraping direction; The disinfection chamber (3) is equipped with disinfection components.

2. The shipboard sewage treatment device according to claim 1, characterized in that, The aeration chamber (1) has a sludge outlet at the bottom, and a squeezing chamber (7) is connected below the sludge outlet. The squeezing chamber (7) is equipped with a squeezing drive assembly and a squeezing plate (701). The squeezing plate (701) has several through holes, and the bottom of the squeezing chamber (7) is equipped with a waste discharge outlet (703). The side wall of the extrusion chamber (7) is connected to the area below the extrusion plate (701) via a return water pipe (702). A return water pump is installed on the return water pipe (702), and the output end of the return water pipe (702) extends to the middle and lower part of the settling chamber (2). When the extrusion drive assembly drives the extrusion plate (701) to extrude the sludge, the water in the sludge is discharged through the through hole of the extrusion plate (701) and then flows into the settling chamber (2) through the return water pipe (702). The extruded waste residue falls to the waste residue discharge outlet (703) and is discharged.

3. The shipboard sewage treatment device according to claim 1, characterized in that, The lifting drive assembly (101) is a cylinder, the cylinder body is fixed to the top of the aeration chamber (1), and the piston rod of the cylinder is fixedly connected to the lifting frame (102).

4. A shipboard sewage treatment device according to claim 1, characterized in that, The rotary drive assembly includes a waterproof drive component (106), a worm gear (107), and a turbine (108) located at the end of each aeration pipe (103). The waterproof drive component (106) is fixed inside the lifting frame (102), and the lifting frame (102) has a sealing structure corresponding to the installation area of ​​the drive component. The output end of the waterproof drive component (106) is fixedly connected to the worm (107) to drive the worm (107) to rotate. Each of the turbines (108) meshes with the worm (107) and drives all aeration pipes (103) to rotate synchronously through the rotation of the worm (107). The protection level of the waterproof drive component (106) is not lower than IP65.

5. A shipboard sewage treatment device according to claim 1, characterized in that, The side plate (105) of the tile-type isolation plate is provided with an elastic sealing strip, which is made of rubber.

6. A shipboard sewage treatment device according to claim 1, characterized in that, The tilt angle of the top of the vertical partition (201) is 15°-20°.

7. A shipboard sewage treatment device according to claim 1, characterized in that, The scraper (203) assembly includes a screw drive assembly, a scraper (203) body, and a guide rail; the screw drive assembly includes a screw motor and a screw body, the screw motor is fixed on the crossbeam at the top of the settling tank (2), the screw body is arranged along the scraping direction of the scraper (203) and fixedly connected to the output end of the screw motor, a nut seat is sleeved on the screw body, and the nut seat is fixedly connected to the middle part of the scraper (203) body; the guide rail is laid on the top of the settling tank (2) along the scraping direction of the scraper (203), and both ends of the scraper (203) body slide in cooperation with the guide rail; the bottom of the scraper (203) body is provided with a polyurethane elastic scraper strip, the elastic scraper strip is detachably fixed to the bottom of the scraper (203) body by bolts, and the elastic scraper strip is tightly attached to the sludge bearing plane.

8. A shipboard sewage treatment device according to claim 1, characterized in that, The disinfection component is an ultraviolet disinfection lamp group, which is arranged at intervals along the length of the disinfection chamber (3).

9. A shipboard sewage treatment device according to claim 1, characterized in that, The bottom of the settling chamber (2) is equipped with a base plate (202) drive assembly. The base plate (202) drive assembly is a lifting cylinder. At least two sets of lifting cylinders are arranged at intervals along the width direction of the settling chamber (2). The output end of each lifting cylinder is fixedly connected to one side of the bottom of the base plate (202). The base plate (202) is provided with grooves that match each vertical partition (201). The vertical partition (201) is embedded in the corresponding groove. When the base plate (202) is raised, the inner wall of the groove can scrape off the attachments on the vertical partition (201).

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