Ship domestic sewage purification treatment equipment

Abstract

The invention belongs to the field of ship sewage treatment equipment, and particularly relates to ship domestic sewage purification treatment equipment which is arranged in a sewage cabin of a ship, and the sewage cabin comprises a sewage tank, an aeration tank and a secondary sedimentation tank which are communicated in sequence; the ship domestic sewage purification treatment equipment further comprises a pretreatment device, a biological treatment device, a sediment treatment device, an adsorption device and a controller, and the pretreatment device is arranged in the sewage pool and used for preliminarily filtering domestic sewage in the sewage pool and removing floating oil on the surface of the sewage; the biological treatment device is used for putting a medicament into the sewage tank, so that pollutants in the aeration tank are biodegraded; the precipitate treatment device is used for drying the precipitate in the secondary sedimentation tank; an adsorption device is arranged at a discharge port of the secondary sedimentation tank and is used for adsorbing sewage to be discharged. Therefore, the problems of unstable sewage treatment quality, high energy consumption and high operation and maintenance cost of a ship domestic sewage treatment device in the prior art can be solved.

Description

Technical Field

[0001] The invention belongs to the field of ship sewage treatment equipment, and in particular relates to ship domestic sewage purification treatment equipment. Background Art

[0002] Domestic sewage from ships mainly comes from the living and sanitary activities of personnel during the navigation and operation of ships. These sewage mainly include kitchen wastewater, bathroom wastewater, toilet wastewater, laundry wastewater, tea water, marine water tank flushing wastewater, etc. These sewage contain a large amount of organic matter and microorganisms. If they are not treated or treated improperly, they will be directly discharged into the ocean, which will pollute the marine environment, damage water quality, and threaten marine ecology and human health. Therefore, it is necessary to purify domestic sewage from ships.

[0003] In the patent with announcement number CN215667588U, a domestic sewage treatment device for ships is disclosed. The whole device is connected by pipelines. The device includes a sewage collection tank, a sewage tank, a primary contact tank, a secondary contact tank, and an MBR membrane tank. The sewage collection tank is located at the outermost end of the whole device. The sewage tank is arranged side by side with the primary contact tank, the secondary contact tank, and the MBR membrane tank. A flushing water outlet is arranged at the upper end of the sewage tank. The sewage tank is connected to the domestic sewage pipe, and a backwashing pipeline is connected to the left. An emergency discharge port is arranged on the backwashing pipeline. A vent and an air pump unit are arranged at the upper end of the primary contact cabinet, and the vent is arranged at the front end of the air pump unit. The primary contact cabinet is connected between the sewage tank and the secondary contact cabinet. A first filter device is arranged at the upper end of the secondary contact cabinet. The first filter device is arranged at the upper end of the secondary contact cabinet; the upper end of the secondary contact cabinet is also provided with a vent; the MBR membrane cabinet is located at the rear end of the secondary contact cabinet, and is provided with an MBR membrane; the upper end of the MBR membrane cabinet is provided with a liquid level switch, and the side is also connected with an emergency overflow cabinet discharge port, and the emergency overflow cabinet discharge port overflows the sewage of the MBR membrane cabinet to the sewage tank; the upper end of the MBR membrane cabinet is connected with the second filter device; the front end pipeline of the second filter device is also provided with an MBR membrane backwashing water port; the tail end of the second filter device is connected with an ultraviolet disinfection device; the left side of the MBR membrane cabinet is also provided with an air lift device; the air lift device is connected with the air pump unit for use, and the sediment is returned to the contact cabinet through the air lift device, and reflux is caused; the pressure water tank discharge port is arranged on the right side of the lower end of the entire device, and the pressure water tank discharge port is connected with the backwashing pipeline for use. As a result, the device has the advantages of small size and strong processing capacity.

[0004] However, in actual tests, it was found that a large number of MBR membranes (membrane bioreactors) were used in the device, and the cost of the membrane itself was high, making the infrastructure investment higher than the traditional sewage treatment process. Furthermore, the MBR membrane mud-water separation process needs to maintain a certain membrane driving pressure. At the same time, in order to maintain a sufficient oxygen transfer rate and flush the membrane surface to reduce membrane pollution, it is necessary to increase the aeration intensity and flow rate, resulting in higher energy consumption than the traditional biological treatment process. In addition, the MBR membrane assembly requires a higher membrane surface flow rate to reduce the deposition of pollutants on the membrane surface, resulting in a higher flow rate for the configured circulation pump, and the unit water production energy consumption is very high. Furthermore, the MBR membrane process is not ideal for the treatment of certain special water qualities (such as high-concentration organic wastewater, containing special harmful substances, etc.). In addition, when the MBR membrane assembly is in operation, the high shear force in the circulation pump will cause the destruction of biological flocs, resulting in a decrease in biological activity. It is worth noting that the MBR membrane is prone to membrane pollution during operation, and needs to be cleaned and maintained regularly, which increases the operating cost. In addition, the MBR process requires professional technicians to carry out operation management and maintenance, and the requirements for operation management are relatively high.

[0005] Therefore, in view of the problems of unstable sewage treatment quality, high energy consumption and high operation and maintenance costs in the ship's domestic sewage treatment device, a more reasonable technical solution is needed to solve the current technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a ship domestic sewage purification treatment equipment to solve the problems of unstable sewage treatment quality, high energy consumption and high operation and maintenance costs in the prior art ship domestic sewage treatment devices.

[0007] In order to achieve the above-mentioned object, the present invention provides a ship domestic sewage purification treatment equipment, which is arranged in the sewage tank of the ship, and the sewage tank includes a sewage tank, an aeration tank and a secondary sedimentation tank, wherein the sewage tank is used to contain sewage; the aeration tank is connected to the sewage tank to receive the sewage discharged from the sewage tank; the secondary sedimentation tank is connected to the aeration tank to receive the sewage discharged from the aeration tank; wherein the secondary sedimentation tank is also provided with a circulation pump to introduce the sediment in the secondary sedimentation tank into the aeration tank;

[0008] The ship domestic sewage purification treatment equipment also includes a pretreatment device, a biological treatment device, a sediment treatment device, an adsorption device and a controller, wherein the pretreatment device is arranged in the sewage tank, and is used to preliminarily filter the domestic sewage in the sewage tank and remove the floating oil on the sewage surface;

[0009] The biological treatment device is used to add reagents to the sewage pool to biodegrade the pollutants in the aeration tank; the sediment treatment device is used to dry the sediment in the secondary sedimentation tank; the discharge port of the secondary sedimentation tank is provided with an adsorption device to adsorb the sewage to be discharged;

[0010] The controller is communicatively connected to the pretreatment device, biological treatment device, sediment treatment device and adsorption device respectively, wherein the controller controls the upstream and / or downstream devices to perform corresponding actions according to the working status of the pretreatment device, biological treatment device, sediment treatment device and adsorption device.

[0011] Optionally, the pretreatment device is configured as an oil-water separator, which includes a body, a separation chamber for allowing liquid to circulate, a top of the separation chamber is provided with an inlet connected to the sewage tank, and a filter is provided at the inlet to intercept solid particles, sediments and other impurities; wherein, an oil discharge port is also provided at the upper part of the separation chamber, and the oil discharge port is connected to a first recovery container; the lower part of the separation chamber is connected to an aeration tank so that the separated sewage can be introduced into the aeration tank.

[0012] Optionally, the inner wall of the separation chamber is provided with a silicon dioxide layer.

[0013] Optionally, the oil discharge port is arranged to be inclined downward, and the inclination angle of the oil discharge port relative to the horizontal plane is 15° to 35°.

[0014] Optionally, a waste port is provided on the side of the separation chamber, a driving member and a gate are provided on the body, the gate is formed into a structure adapted to the waste port and is movably connected to the body, and a driving shaft of the driving member is connected to the gate to expose or close the waste port; a second recovery container is provided outside the waste port;

[0015] The gate is movable through a driving member and a pressure sensor is provided at the bottom of the filter element. The pressure sensor is used to measure the current pressure information of the filter element. The pressure sensor and the driving member are both communicatively connected to the controller. The controller controls the driving member to perform corresponding actions according to the current pressure information.

[0016] Optionally, the biological treatment device includes a dosing mechanism, an oxygen supply mechanism and a heating mechanism, the dosing mechanism is used to add chemicals to the aeration tank, the heating mechanism is used to heat the sewage in the aeration tank, and the oxygen supply mechanism is used to introduce oxygen-containing gas into the sewage in the aeration tank.

[0017] Optionally, the biological treatment device further comprises an oxygen concentration detector, a temperature detector and a particle size detector, wherein the oxygen concentration detector is used to detect the current oxygen concentration information of the sewage in the aeration tank, the temperature detector is used to detect the current temperature information of the sewage in the aeration tank, and the particle size detector is used to detect the current particle information at the bottom of the sewage tank;

[0018] The oxygen concentration detector, temperature detector and particle size detector are all communicatively connected to the controller to control the dosing mechanism, oxygen supply mechanism and heating mechanism to perform corresponding actions according to the current oxygen concentration information, current temperature information and current particle information.

[0019] Optionally, the biological treatment device comprises a stirring mechanism, which is connected to the ship to stir the sewage in the aeration tank;

[0020] Wherein, the stirring mechanism includes a driver, a transmission shaft and stirring blades, the output shaft of the driver is connected to the transmission shaft to drive the transmission shaft to rotate along its rotation center; the stirring blades are provided in plurality and are arranged on the transmission shaft at intervals.

[0021] Optionally, the stirring blade is L-shaped so as to push the sewage to move in different directions; and the edge of the stirring blade is formed into a smooth rounded corner; wherein the folded angle of the stirring blade is an obtuse angle.

[0022] Optionally, the driver is connected to the ship via a lifting mechanism, and a lifting end of the lifting mechanism is fixedly connected to the stirring mechanism to drive the stirring blades of the stirring mechanism to sink into or leave the sewage.

[0023] Through the above technical scheme, through biodegradation and adsorption treatment, the equipment can effectively remove pollutants in domestic sewage, including organic matter, suspended matter, grease, etc., to ensure that the treated water quality meets the discharge requirements of relevant national and international standards, thereby greatly reducing the pollution of ship emissions to the marine environment. The treated water quality can be recycled, such as for flushing toilets, etc., thereby saving fresh water resources on the ship. By monitoring and controlling the entire system through the controller, intelligent and automated operation can be achieved, reducing the difficulty and workload of the crew, and also improving the treatment efficiency. The equipment combines multiple links such as pretreatment, biological treatment, sediment treatment and adsorption treatment to form a complete treatment process, which can quickly and effectively treat domestic sewage generated on ships. The equipment can adapt to ships of different types and sizes, whether large passenger ships or small fishing boats, can meet their specific treatment needs and has good applicability; the equipment can ensure that the domestic sewage generated on the ship is effectively treated, and can play an effective role in energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of the ship domestic sewage purification treatment equipment provided by the present invention in the first embodiment.

[0026] In the above drawings: 11-sewage tank, 12-aeration tank, 13-secondary sedimentation tank, 21-filter element, 22-gate, 3-oxygen supply mechanism, 4-stirring mechanism, 5-lifting mechanism, 6-first recovery container, 7-adsorption device, 81-oil, 82-sewage, 83-sedimentation, 84-standard water. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0028] According to a specific embodiment of the present invention, a ship sewage purification device is provided, which is arranged in the sewage tank of the ship and can purify the discharged sewage so that the discharged wastewater can meet the discharge standards and reduce the pollution to the water body. Figure 1 One specific embodiment is shown.

[0029] See also Figure 1 As shown, the ship's domestic sewage purification treatment equipment is arranged in the ship's sewage tank, and the sewage tank includes a sewage tank 11, an aeration tank 12 and a secondary sedimentation tank 13, wherein the sewage tank 11 is used to hold sewage 82; the aeration tank 12 is connected to the sewage tank 11 to receive the sewage 82 discharged from the sewage tank 11; the secondary sedimentation tank 13 is connected to the aeration tank 12 to receive the sewage 82 discharged from the aeration tank 12; wherein the secondary sedimentation tank 13 is also provided with a circulating pump for introducing the sediment in the secondary sedimentation tank 13 into the aeration tank 12.

[0030] The ship domestic sewage purification treatment equipment also includes a pretreatment device, a biological treatment device, a sediment treatment device, an adsorption device 7 and a controller, wherein the pretreatment device is arranged in the sewage pool 11, and is used to preliminarily filter the domestic sewage in the sewage pool 11 and remove floating oil on the surface of the sewage 82.

[0031] The biological treatment device is used to inject chemicals into the sewage pool 11 to biodegrade the pollutants in the aeration tank 12; the sediment treatment device is used to dry the sediment in the secondary sedimentation tank 13; the discharge port of the secondary sedimentation tank 13 is provided with an adsorption device 7 for adsorbing the sewage 82 to be discharged.

[0032] The controller is communicatively connected to the pretreatment device, the biological treatment device, the sediment treatment device and the adsorption device 7 respectively, wherein the controller controls the upstream and / or downstream devices to perform corresponding actions according to the working status of the pretreatment device, the biological treatment device, the sediment treatment device and the adsorption device 7.

[0033] The sewage tank 11 is used to hold domestic sewage on the ship. The aeration tank 12 receives sewage 82 from the sewage tank 11 and promotes biodegradation through the aeration process. The secondary sedimentation tank 13 receives the sewage 82 treated by the aeration tank 12, performs solid-liquid separation, and precipitates and deposits on the bottom of the tank.

[0034] The pretreatment device is arranged in the sewage tank 11, and is used for preliminary filtering of the sewage 82 and removing floating oil. The biological treatment device puts reagents into the aeration tank 12 to promote the biodegradation of pollutants. The sediment treatment device dries the sediment in the secondary sedimentation tank 13. The adsorption device 7 is arranged at the discharge port of the secondary sedimentation tank 13, and is used for the final adsorption treatment of the sewage 82 to be discharged. The controller coordinates the work of each device according to the preset treatment program (existing technology).

[0035] The working process of the ship domestic sewage purification treatment equipment is summarized as follows: the sewage 82 first enters the sewage tank 11, and is initially filtered and removed from the floating oil by the pretreatment device. The pretreated sewage 82 enters the aeration tank 12, and the biological treatment device puts reagents into the tank to promote the biodegradation of pollutants. The aerated sewage 82 enters the secondary sedimentation tank 13 for solid-liquid separation, and the precipitate 83 is deposited at the bottom of the tank. The sediment treatment device dries the precipitate 83 in the secondary sedimentation tank 13. The qualified water 84 in the secondary sedimentation tank 13 flows out through the discharge port, and is finally adsorbed by the adsorption device 7 to ensure that the water quality meets the standard before discharge.

[0036] The controller monitors and controls the working status of each device through a preset processing program. When a device fails or needs maintenance, the controller will promptly issue an alarm and activate the backup device or the corresponding emergency plan to ensure the normal operation of the entire system and the continuous treatment of sewage 82. At the same time, the controller can also adjust the working parameters of each device according to the water quality monitoring data to optimize the treatment effect.

[0037] Through the above technical scheme, through biodegradation and adsorption treatment, the equipment can effectively remove pollutants in domestic sewage, including organic matter, suspended matter, grease, etc., to ensure that the treated water quality meets the discharge requirements of relevant national and international standards, thereby greatly reducing the pollution of ship emissions to the marine environment. The treated water quality can be recycled, such as for flushing toilets, etc., thereby saving fresh water resources on the ship. By monitoring and controlling the entire system through the controller, intelligent and automated operation can be achieved, reducing the operating difficulty and workload of the crew, while improving the treatment efficiency. The equipment combines multiple links such as pretreatment, biological treatment, sediment treatment and adsorption treatment to form a complete treatment process, which can quickly and effectively treat domestic sewage generated on ships, and the treatment effect is stable. The equipment can adapt to ships of different types and sizes, whether large passenger ships or small fishing boats, can meet their specific treatment needs, and has good applicability. The equipment can ensure that the domestic sewage generated on ships is effectively treated, and can play an effective role in energy saving and environmental protection.

[0038] Compared with the ship domestic sewage treatment device used in the background technology, the ship domestic sewage purification treatment equipment provided by the present disclosure abandons the use of MBR membrane (membrane bioreactor), reducing the equipment cost. At the same time, there is no need to consume energy to clean and maintain the equipment, so it not only reduces the requirements for technicians, but also reduces maintenance costs, effectively solving the problems of unstable sewage treatment quality, high energy consumption and high operation and maintenance costs in the ship domestic sewage treatment device in the prior art, and has good economy and practicality.

[0039] In one embodiment provided in the present disclosure, the pretreatment device is configured as an oil-water separator, which includes a body, a separation chamber for allowing liquid to circulate, an inlet connected to a sewage tank 11 is provided at the top of the separation chamber, and a filter element 21 is provided at the inlet to intercept solid particles, sediments and other impurities; wherein, an oil discharge port is also provided at the upper part of the separation chamber, and the oil discharge port is connected to a first recovery container 6; the lower part of the separation chamber is connected to an aeration tank 12, so that the separated sewage 82 can be introduced into the aeration tank 12.

[0040] The filter element 21 provided at the inlet can effectively intercept solid particles, sediments and other impurities in the sewage 82, and prevent the impurities from entering the subsequent treatment process and causing adverse effects on the equipment and treatment effect. In addition, based on the setting of the filter element 21, the surface area and time of separation can be increased. In this way, based on the density difference between oil and water, the oil molecules float upward under gravity separation, and the water settles downward 83, so that the oil 81 can be introduced into the first recovery container 6 through the oil discharge port at the top of the separation chamber, so as to realize the recovery of oil, which not only reduces environmental pollution, but also improves resource utilization. The lower part of the separation chamber is connected to the aeration tank 12, ensuring that the separated sewage 82 can be smoothly introduced into the aeration tank 12, providing conditions for the subsequent biodegradation process.

[0041] Through the pretreatment of the oil-water separator, the oil and other impurities entering the aeration tank 12 can be greatly reduced, thereby improving the effect of subsequent biodegradation and sedimentation 83 treatment, ensuring that the final discharged water quality meets the standards. The use of the oil-water separator reduces the accumulation of oil and impurities in the subsequent treatment equipment, reduces the risk of equipment blockage and failure, and improves the stability and reliability of the entire treatment system.

[0042] In the present disclosure, the filter element 21 is configured in at least two groups, and the pore size of the filter element 21 gradually decreases from top to bottom. Through the multi-stage filtration design, the filter elements 21 with different pore sizes can intercept impurities and particles of different sizes. Larger particles and impurities are intercepted when passing through the first-stage filter element 21, while smaller particles and impurities are further intercepted in the subsequent filter element 21 with a smaller pore size. This hierarchical filtration method can ensure that impurities in the sewage 82 are effectively removed and improve the overall filtration effect.

[0043] Through multi-stage filtration, impurities in the sewage 82 are gradually removed, and the quality of the effluent is guaranteed. Especially for ship domestic sewage, ensuring the quality of the effluent is of great significance for protecting the marine environment and the safety of ship operation.

[0044] Each filter element 21 is detachably mounted on the machine body, so that each filter element 21 can be replaced and cleaned independently, which is convenient for maintenance and management. When a filter element 21 of a certain level is blocked or ineffective, only the filter element 21 of that level needs to be replaced or cleaned, without replacing the entire filter system.

[0045] In a possible design, the filter element 21 includes an inclined grid, a fiber filter plate, and an ultrafiltration membrane permeation separation filter plate.

[0046] As the first line of defense, the grille mainly intercepts large solid impurities in the sewage 82, such as paper and cloth fragments. The inclined design helps the solid impurities in the sewage 82 to slide down the grille under the action of gravity and enter the subsequent second recovery container. In addition, because the filter holes of the inclined grille are larger, it can prevent clogging to a certain extent and improve the filtration efficiency.

[0047] Fiber filter plates are usually made of fiber materials, with a large specific surface area and high filtration accuracy. They can further intercept suspended matter, colloids and other tiny particles in sewage and improve the quality of effluent. In addition, fiber filter plates have stable filtration performance and a long service life, and are suitable for continuous treatment of domestic sewage on ships.

[0048] Ultrafiltration membrane permeation separation filter plate is a filter material with extremely small pore size, which can intercept bacteria, viruses, macromolecular organic matter, etc. in sewage, and can achieve efficient and reliable deep filtration.

[0049] In this way, based on the selection and design of different filter elements 21, solid impurities, suspended matter, colloids, bacteria, viruses, etc. in the domestic sewage of ships can be effectively removed to ensure the quality of effluent water. At the same time, this design also has the advantages of simple structure, convenient operation, low maintenance cost, etc., and has good economic efficiency.

[0050] It should be noted that the grid, fiber filter plate and ultrafiltration membrane permeation separation filter plate are all existing technologies.

[0051] Furthermore, the inner wall of the separation chamber is provided with a silicon dioxide layer. The silicon dioxide layer has excellent anti-fouling properties, especially for oil stains, and can effectively prevent oil stains from adhering to and accumulating on the inner wall of the separation chamber, thereby keeping the inner wall clean and smooth, ensuring that the sewage can flow smoothly, and avoiding adhesion to the inner wall and hindering the smooth flow of sewage. In this way, it is easier for oil stains and water to form a clear interface during the separation process, thereby improving the efficiency of oil-water separation.

[0052] In addition, the silica layer also has good chemical stability and corrosion resistance, which can resist the erosion of the inner wall of the separation chamber by chemicals in the sewage, helping to extend the service life of the equipment and reduce the maintenance and replacement costs caused by corrosion.

[0053] In an embodiment provided in the present disclosure, the oil discharge port is arranged to be inclined downward, and the inclination angle of the oil discharge port relative to the horizontal plane is 15° to 35°.

[0054] The downward tilted oil discharge port can utilize gravity to make the oil flow to the discharge port more naturally. Compared with a horizontal or upward discharge port, it can more effectively prevent oil from accumulating near the discharge port, thereby improving discharge efficiency.

[0055] Setting a certain inclination angle can ensure that the oil can flow out smoothly along the inclined direction during the discharge process, thus preventing the oil from re-contaminating the treated sewage due to backflow82.

[0056] According to the design disclosed in the present invention, the angle is in the range of 15° to 35°, and this angle range has been proven to be a better choice for both effectively promoting the discharge of oil and preventing the backflow of oil.

[0057] By adjusting the inclination angle, the emission performance can be optimized according to different application scenarios and requirements.

[0058] In a preferred embodiment provided by the present disclosure, the inclination angle of the oil discharge port is 20°. In other embodiments, it can also be configured to be 15°, 25°, 30° or 35°. For example, when treating oil with high viscosity or poor fluidity, the inclination angle can be appropriately increased to improve the discharge efficiency. In this regard, those skilled in the art can flexibly set it according to actual needs.

[0059] In the present disclosure, a waste port is provided on the side of the separation chamber, and a driving member and a gate 22 are provided on the body. The gate 22 is formed into a structure adapted to the waste port and is movably connected to the body. The driving shaft of the driving member is connected to the gate 22 to expose or close the waste port; a second recovery container is provided outside the waste port.

[0060] The gate 22 is movable through a driving member. A pressure sensor is provided at the bottom of the filter element 21. The pressure sensor is used to measure the current pressure information of the filter element 21. Both the pressure sensor and the driving member are communicatively connected to the controller. The controller controls the driving member to perform corresponding actions according to the current pressure information.

[0061] A waste port is provided on the side of the separation chamber for discharging or collecting solid waste generated during the purification process. When waste needs to be discharged, the controller opens the gate 22 through the driving member to expose the waste port; after the treatment is completed, the gate 22 is closed to prevent sewage 82 or waste from leaking. In this way, the collection and treatment of waste is more convenient, and secondary pollution of the environment by waste is avoided.

[0062] A pressure sensor is provided at the bottom of the filter element 21, which can monitor the pressure change of the filter element 21 during operation in real time. The pressure sensor and the drive element are both connected to the controller for communication. The controller can determine the working state of the filter element 21 based on the data provided by the pressure sensor. If the current pressure exceeds the preset safety threshold, the controller will send an instruction to the drive element to reduce the load of the filter element 21 by adjusting the opening and closing of the gate 22, or trigger the alarm system to remind the operator to intervene.

[0063] Through the above technical solution, based on the cooperation of the controller and the driving member, the automatic opening and closing of the gate 22 is realized, the need for manual operation is reduced, and the automation level of the equipment is improved. The pressure state of the filter element 21 is monitored in real time by the pressure sensor, and the opening and closing of the gate 22 is adjusted by the controller when necessary, effectively avoiding equipment damage or safety accidents caused by overloading of the filter element 21. By discharging solid waste in a timely manner, the accumulation of waste in the separation chamber is avoided, thereby maintaining the continuous and efficient operation of the equipment.

[0064] A limiting groove may be provided on the machine body so that the gate 22 is embedded in the limiting groove. The driving member may be configured as a screw transmission mechanism, and the threaded seat on the screw transmission mechanism is connected to the gate 22, so that the gate 22 can be driven by the screw transmission mechanism to move along the limiting groove, thereby realizing the closing and opening of the waste opening.

[0065] In order to further improve the smoothness of the movement of the gate 22, a ball or roller is provided on the gate 22, which can reduce friction and enable the gate 22 to move smoothly along the limiting groove.

[0066] In another embodiment, the gate 22 is rotatably connected to the machine body through hinges or pins, and the driving member is configured as a cylinder or a hydraulic cylinder, so that it can drive the gate 22 to flip, thereby realizing the closing and opening of the waste port.

[0067] In one embodiment provided in the present disclosure, the biological treatment device includes a dosing mechanism, an oxygen supply mechanism 3 and a heating mechanism. The dosing mechanism is used to add chemicals to the aeration tank 12, the heating mechanism is used to heat the sewage 82 in the aeration tank 12, and the oxygen supply mechanism 3 is used to introduce oxygen-containing gas into the sewage 82 in the aeration tank 12.

[0068] The dosing mechanism is designed to put chemicals into the aeration tank 12. These chemicals may be microbial nutrients, pH regulators, flocculants or other chemicals that are helpful to the biological treatment process. By putting in appropriate chemicals, the dosing mechanism can optimize the biological environment in the aeration tank 12, increase the activity of microorganisms, and thus accelerate the biological degradation process of the sewage 82.

[0069] The oxygen supply mechanism 3 is responsible for introducing oxygen-containing gas, usually air or pure oxygen, into the sewage 82 in the aeration tank 12. Aeration is an important step in the biological treatment process. By introducing oxygen into the sewage 82, the metabolic activity of aerobic microorganisms can be promoted and the degradation of organic matter can be accelerated. The oxygen supply mechanism 3 ensures sufficient dissolved oxygen concentration in the aeration tank 12, providing the necessary living conditions for aerobic microorganisms.

[0070] The heating mechanism heats the sewage 82 in the aeration tank 12 to maintain or adjust the water temperature to a temperature range suitable for biological treatment. By adjusting the water temperature through the heating mechanism, it is possible to ensure that the microorganisms carry out metabolic activities under the optimal temperature conditions, thereby improving the efficiency of biological treatment. Especially in a cold environment, the role of the heating mechanism is particularly important, which can prevent the biological treatment efficiency from decreasing due to too low water temperature.

[0071] In this way, through the synergistic effect of the dosing mechanism, the oxygen supply mechanism 3 and the heating mechanism, good conditions are provided for the biological treatment process in the aeration tank 12, ensuring efficient purification of the sewage 82.

[0072] Furthermore, the biological treatment device also includes an oxygen concentration detector, a temperature detector and a particle size detector, wherein the oxygen concentration detector is used to detect the current oxygen concentration information of the sewage 82 in the aeration tank 12, the temperature detector is used to detect the current temperature information of the sewage 82 in the aeration tank 12, and the particle size detector is used to detect the current particle information at the bottom of the sewage tank 11;

[0073] The oxygen concentration detector, the temperature detector and the particle size detector are all communicatively connected to the controller to control the dosing mechanism, the oxygen supply mechanism 3 and the heating mechanism to perform corresponding actions according to the current oxygen concentration information, the current temperature information and the current particle information.

[0074] The oxygen concentration detector can detect the current oxygen concentration information of the sewage 82 in the aeration tank 12 in real time. By real-time monitoring of the oxygen concentration, it can ensure that the dissolved oxygen concentration in the aeration tank 12 is within a suitable range to meet the metabolic needs of aerobic microorganisms. When the oxygen concentration is lower than or higher than the preset value, the controller can adjust the working state of the oxygen supply mechanism 3 according to the data of the oxygen concentration detector to ensure that the oxygen concentration in the aeration tank 12 is stable.

[0075] The temperature detector is used to detect the current temperature information of the sewage 82 in the aeration tank 12. By real-time monitoring of the temperature, it can be ensured that the microorganisms carry out decomposition activities under the optimal temperature conditions. When the temperature is lower than or higher than the preset value, the controller can adjust the working state of the heating mechanism according to the data of the temperature detector to keep the water temperature in the aeration tank 12 at the optimal value, thereby ensuring the activity of the microorganisms and improving the decomposition efficiency.

[0076] The particle size detector is used to detect the current particle information at the bottom of the sewage pool 11, such as particle size, distribution information, etc., which can reflect the content and properties of suspended matter in the sewage 82, so as to accurately evaluate the biological treatment effect. According to the data of the particle size detector, the controller can adjust the working state of the dosing mechanism and put in an appropriate amount of flocculant or other agents to promote the sedimentation 83 and separation of suspended matter.

[0077] In this way, based on the communication connection between the three detectors and the controller, the biological treatment device can obtain key parameter information in real time, and adjust the working status of the dosing mechanism, oxygen supply mechanism 3 and heating mechanism according to this information. This closed-loop control system can not only improve the efficiency of biological treatment, but also reduce energy waste and operating costs. At the same time, it can also automatically adjust the treatment strategy according to changes in water quality, making the biological treatment process more intelligent and adaptive.

[0078] Among them, the oxygen concentration detector is equipped with an oxygen concentration sensor, and specific types include but are not limited to electrochemical oxygen sensors, optical oxygen sensors, fluorescent oxygen sensors, nano oxygen sensors, and dissolved oxygen sensors; the temperature detector is equipped with a temperature sensor, of course, it can also be a temperature detector or a temperature detection rod; the particle size detector is equipped with a sedimentation particle size analyzer. It should be noted that the structures and working principles of the oxygen concentration detector, temperature detector, and particle size detector are all prior art, and those skilled in the art can select appropriate commercially available products according to actual needs.

[0079] In one possible design, the biological treatment device includes a stirring mechanism 4, which is connected to the ship to stir the sewage 82 in the aeration tank 12 to ensure that organic matter, microorganisms, and chemicals in the sewage 82 are evenly mixed, thereby improving the reaction speed and efficiency of the biological treatment.

[0080] The stirring mechanism 4 includes a driver, a transmission shaft and a stirring blade. The output shaft of the driver is connected to the transmission shaft to drive the transmission shaft to rotate along its rotation center. The stirring blade is provided in multiples and arranged on the transmission shaft at intervals. The transmission shaft connects the driver and the stirring blade, and can effectively transmit the power of the driver, thereby driving the stirring blade to rotate. The stirring blade is provided in multiples and arranged on the transmission shaft at intervals.

[0081] By stirring, the organic matter, microorganisms and chemicals in the sewage 82 can be mixed more evenly, accelerating the speed of biodegradation and chemical reaction. Stirring can prevent solid particles in the sewage 82 from settling 83 at the bottom of the aeration tank 12, thereby improving the decomposition efficiency of organic matter to a certain extent.

[0082] Specifically, the stirring blade is L-shaped so as to push the sewage 82 to move in different directions; and the edge of the stirring blade is formed into a smooth rounded corner; wherein the folded angle of the stirring blade is an obtuse angle.

[0083] The L-shaped design enables the stirring blades to push the sewage 82 in different directions when rotating, which helps to form a complex flow pattern in the aeration tank 12, thereby enhancing the mixing effect of the sewage 82. Compared with straight-line or other simple-shaped stirring blades, the L-shaped blades can better adapt to the spatial layout of the aeration tank 12, ensuring effective stirring in every corner of the tank.

[0084] The edges of the stirring blades are formed into smooth rounded corners, which can reduce the friction with the sewage 82 and the pool wall during the stirring process, reduce energy consumption and noise. The rounded corner design also helps prevent the blade edges from causing unnecessary damage to the microorganisms in the sewage 82, maintaining the stability and efficiency of the biological treatment process.

[0085] Specifically, the angle of the stirring blade is an obtuse angle, so that the stirring blade can push the sewage 82 to flow more smoothly when rotating, reducing the impact and turbulence of the water flow. The design of the obtuse angle also helps to improve the structural strength of the stirring blade, so that it can withstand greater loads and impact forces, and extend its service life. In this way, the stirring mechanism 4 can play a more efficient, stable and reliable stirring role in the biological treatment device. They help to improve the efficiency and quality of biological treatment, reduce energy consumption and maintenance costs, and are an indispensable component of biological treatment devices.

[0086] Furthermore, the driver is connected to the ship via a lifting mechanism 5 , and a lifting end of the lifting mechanism 5 is fixedly connected to the stirring mechanism 4 to drive the stirring blades of the stirring mechanism 4 to sink into or leave the sewage 82 .

[0087] The lifting mechanism 5 can adjust the position of the stirring mechanism 4 in the sewage 82 as needed, thereby, through the lifting action of the lifting end, the stirring blades of the stirring mechanism 4 can be driven to sink into or leave the sewage 82, that is, the immersion depth of the stirring blades can be adjusted, so as to achieve stirring of sewage 82 at different depths. When it is necessary to treat deeper sewage 82, the stirring blades can be completely immersed in the sewage 82 for sufficient stirring; when it is necessary to stop stirring or handle other tasks, the stirring blades can quickly leave the sewage 82 to reduce energy consumption and wear.

[0088] In practical applications, the position of the stirring mechanism 4 can be adjusted by controlling the lifting mechanism 5 according to the navigation state of the ship and the treatment requirements of the sewage 82. For example, when the ship is docked or sailing at a slow speed, the stirring blades can be sunk into the sewage 82 for sufficient stirring; and when the ship is sailing at a high speed or needs to handle other tasks, the stirring blades can be lifted up and away from the sewage 82. Thus, more flexibility and operating space are provided, so that the stirring mechanism 4 can better adapt to different sewage 82 treatment requirements.

[0089] In the present disclosure, the biological treatment device, the sediment treatment device and the adsorption device 7 all adopt the treatment equipment in the prior art, and those skilled in the art can flexibly configure them with known products under the technical concept of the present disclosure. Among them, the adsorption device 7 is provided with an adsorbent (such as activated carbon, molecular sieve, etc.) to adsorb organic matter in the water body, thereby further removing impurities in the qualified water 84 and further purifying the water. On this basis, an ultraviolet disinfection device can also be added to further disinfect residual pollutants and microorganisms in the qualified water 84 to ensure that the effluent water quality meets the relevant standards.

[0090] In the present disclosure, the controller is configured as a PLC logic controller.

[0091] Specifically, in the present invention, the controller may also be configured as a central processing unit (CPU). In other embodiments, the controller may also be configured as a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA).

[0092] In the present disclosure, the controller is connected to the pretreatment device, the biological treatment device, the sediment treatment device, the adsorption device 7, the detector, other electrical equipment and electrical components through cables. In other embodiments, the controller can also be connected to the pretreatment device, the biological treatment device, the sediment treatment device, the adsorption device 7, the detector, other electrical equipment and electrical components through wireless communication modules such as WiFi modules and ZigBee modules. In this regard, those skilled in the art can flexibly configure it under the technical concept of the present disclosure.

[0093] Finally, it should be noted that the present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A ship domestic sewage purification and treatment equipment, arranged in the sewage tank of the ship, characterized in that: The sewage tank includes a sewage tank, an aeration tank and a secondary sedimentation tank, wherein the sewage tank is used to hold sewage; the aeration tank is connected to the sewage tank to receive sewage discharged from the sewage tank; the secondary sedimentation tank is connected to the aeration tank to receive sewage discharged from the aeration tank; wherein the secondary sedimentation tank is also provided with a circulation pump to guide the sediment in the secondary sedimentation tank into the aeration tank; The ship domestic sewage purification treatment equipment also includes a pretreatment device, a biological treatment device, a sediment treatment device, an adsorption device and a controller, wherein the pretreatment device is arranged in the sewage tank, and is used to preliminarily filter the domestic sewage in the sewage tank and remove the floating oil on the sewage surface; The biological treatment device is used to add reagents to the sewage pool to biodegrade the pollutants in the aeration tank; the sediment treatment device is used to dry the sediment in the secondary sedimentation tank; the discharge port of the secondary sedimentation tank is provided with an adsorption device to adsorb the sewage to be discharged; The controller is communicatively connected to the pretreatment device, biological treatment device, sediment treatment device and adsorption device respectively, wherein the controller controls the upstream and / or downstream devices to perform corresponding actions according to the working status of the pretreatment device, biological treatment device, sediment treatment device and adsorption device.

2. The ship sewage purification treatment equipment according to claim 1 is characterized in that: The pretreatment device is configured as an oil-water separator, which includes a body, a separation chamber for allowing liquid to circulate, an inlet connected to the sewage tank is provided at the top of the separation chamber, and a filter is provided at the inlet to intercept solid particles, sediments and other impurities; wherein, an oil discharge port is also provided at the upper part of the separation chamber, and the oil discharge port is connected to a first recovery container; the lower part of the separation chamber is connected to an aeration tank, so that the separated sewage can be introduced into the aeration tank.

3. The ship sewage purification treatment equipment according to claim 2 is characterized in that: The inner wall of the separation chamber is provided with a silicon dioxide layer.

4. The ship sewage purification treatment equipment according to claim 2, characterized in that: The oil discharge port is arranged to be inclined downward, and the angle of inclination of the oil discharge port relative to the horizontal plane is 15° to 35°.

5. The ship sewage purification treatment equipment according to claim 2, characterized in that: A waste port is provided on the side of the separation chamber, a driving member and a gate are provided on the body, the gate is formed into a structure adapted to the waste port and is movably connected to the body, and a driving shaft of the driving member is connected to the gate to expose or close the waste port; a second recovery container is provided outside the waste port; The gate is movable through a driving member and a pressure sensor is provided at the bottom of the filter element. The pressure sensor is used to measure the current pressure information of the filter element. The pressure sensor and the driving member are both communicatively connected to the controller. The controller controls the driving member to perform corresponding actions according to the current pressure information.

6. The ship sewage purification treatment equipment according to claim 1, characterized in that: The biological treatment device comprises a dosing mechanism, an oxygen supply mechanism and a heating mechanism. The dosing mechanism is used to add medicine to the aeration tank, the heating mechanism is used to heat the sewage in the aeration tank, and the oxygen supply mechanism is used to introduce oxygen-containing gas into the sewage in the aeration tank.

7. The ship sewage purification treatment equipment according to claim 6, characterized in that: The biological treatment device further comprises an oxygen concentration detector, a temperature detector and a particle size detector, wherein the oxygen concentration detector is used to detect the current oxygen concentration information of the sewage in the aeration tank, the temperature detector is used to detect the current temperature information of the sewage in the aeration tank, and the particle size detector is used to detect the current particle information at the bottom of the sewage tank; The oxygen concentration detector, temperature detector and particle size detector are all communicatively connected to the controller to control the dosing mechanism, oxygen supply mechanism and heating mechanism to perform corresponding actions according to the current oxygen concentration information, current temperature information and current particle information.

8. The ship sewage purification treatment equipment according to claim 6, characterized in that: The biological treatment device comprises a stirring mechanism, which is connected to the ship to stir the sewage in the aeration tank; Wherein, the stirring mechanism includes a driver, a transmission shaft and stirring blades, the output shaft of the driver is connected to the transmission shaft to drive the transmission shaft to rotate along its rotation center; the stirring blades are provided in plurality and are arranged on the transmission shaft at intervals.

9. The ship sewage purification treatment equipment according to claim 8, characterized in that: The stirring blade is L-shaped so as to push the sewage to move in different directions; and the edge of the stirring blade is formed into a smooth rounded corner; wherein the folding angle of the stirring blade is an obtuse angle.

10. The ship sewage purification treatment equipment according to claim 8, characterized in that: The driver is connected to the ship via a lifting mechanism, and the lifting end of the lifting mechanism is fixedly connected to the stirring mechanism to drive the stirring blades of the stirring mechanism to sink into or leave the sewage.

Images