Ship kitchen wet garbage treatment system and treatment method

Abstract

The invention provides a ship kitchen wet garbage treatment system and method. The ship kitchen wet garbage treatment system comprises a kitchen wet garbage crusher, a vacuum collection device and a storage cabinet. The kitchen wet garbage crusher, the vacuum collecting device and the storage cabinet are sequentially connected through a pipeline; the storage cabinet is connected with a plurality of discharging pipelines, each discharging pipeline is provided with a remote control gate valve, and the discharging pipelines are used for discharging crushed wet garbage to at least one of outboard facilities, shore facilities and other equipment on a ship; smashed kitchen wet garbage is stored on the storage cabinet through vacuum suction of the vacuum collecting device, so that generation of flushing water is greatly reduced, and loads of the sewage treatment device and the degreaser are reduced; and the storage cabinet is connected with a plurality of discharging pipelines, and each discharging pipeline is provided with a remote control gate valve, so that sailors can flexibly discharge the crushed wet garbage according to different sea area discharging regulations.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship design, and in particular relates to a ship kitchen wet garbage treatment system and treatment method. Background Art

[0002] Regarding the disposal of wet kitchen waste on board ships, regulations regarding its discharge vary across different sea areas, based on relevant regulations. In general waters, the discharge of wet kitchen waste is strictly prohibited within 3 nautical miles of the nearest land. Within 3 to 12 nautical miles of the nearest land, the waste must be shredded and discharged only when the vessel is underway. Beyond 12 nautical miles from the nearest land, the discharge of uncrushed wet kitchen waste is permitted. In special waters, the discharge of wet kitchen waste is only permitted beyond 12 nautical miles from the nearest land or ice shelf.

[0003] Currently, ships are commonly equipped with food grinders and degreasers (also known as skimmers). The specific processing process is as follows: food scraps are crushed in the grinder and then flow into the degreaser along with other kitchen gray water, where the oil content is removed. The remaining residue is then transferred to the sludge tank for storage. The discharge of gray water depends on the port's zero-discharge policy and can be discharged directly overboard or sent to a sewage treatment plant for treatment.

[0004] However, for ships with large crews and that often operate along coastlines or in special sea areas (where the discharge of kitchen waste is prohibited), such as passenger ferries, the amount of wet kitchen waste generated is large. The existing gravity collection method will result in the generation of a large amount of gray water. In the prohibited discharge area, this gray water must be treated in the sewage treatment plant, which undoubtedly greatly increases the operating load of the sewage treatment plant. In addition, the crushed food waste contains a large amount of grease, which significantly increases the workload of the degreaser. For ships that generate a large amount of wet kitchen waste, the capacity demand for the degreaser increases accordingly, but there is currently a lack of large-capacity marine degreaser products on the market. In addition, the degreaser filter is very prone to clogging and requires frequent cleaning and maintenance. This not only increases the labor cost of ship operation, but may also affect the normal operation of the degreaser and the treatment effect of wet kitchen waste due to untimely maintenance. Summary of the Invention

[0005] In a first aspect, an embodiment of the present invention provides a ship kitchen wet garbage treatment system, comprising a kitchen wet garbage pulverizer, a vacuum collection device, and a storage cabinet; the kitchen wet garbage pulverizer, the vacuum collection device, and the storage cabinet are connected in sequence by pipes; the output pipe of the storage cabinet is connected to multiple discharge pipes, each of which is provided with a remote control gate valve, and the discharge pipes are used to discharge the pulverized wet garbage to at least one of the following locations: overboard, onshore facilities, and other equipment on the ship.

[0006] In some embodiments, the vacuum collection device includes a vacuum storage tank, a first pneumatic discharge valve is provided at the discharge outlet of the kitchen wet garbage shredder, and is connected to the vacuum storage tank through a first pipe, the vacuum storage tank is connected to the storage cabinet through a second pipe, and the second pipe is sequentially provided with a first discharge pump and a first check valve along the direction from the vacuum storage tank to the storage cabinet.

[0007] In some embodiments, a first liquid level switch and a second liquid level switch are provided on the vacuum storage tank; the first liquid level switch is used to control the first discharge pump to stop running when it is detected that the amount of crushed wet garbage in the vacuum storage tank is lower than a first preset threshold value; the second liquid level switch is used to control the first discharge pump to start when it is detected that the amount of crushed wet garbage in the vacuum storage tank is higher than a second preset threshold value.

[0008] In some embodiments, a pressure control system and a ventilation pipe are provided on the vacuum storage tank, and a filter, a second pneumatic discharge valve and a second discharge pump are provided in sequence along the ventilation pipe in a direction away from the vacuum storage tank; the pressure control system is used to monitor the pressure of the first pipe and control the start-up of the second discharge pump when the pressure of the first pipe is lower than a third preset threshold.

[0009] In some embodiments, the vacuum storage tank is further provided with a bypass ventilation pipe, and a third pneumatic exhaust valve is provided on the bypass ventilation pipe.

[0010] In some embodiments, the storage cabinet is provided with a third pipeline and a fourth pipeline, the third pipeline is connected to multiple discharge pipelines in sequence through a third discharge pump, an electric three-way valve and a second check valve, and the fourth pipeline is connected to the third pipeline through an electric three-way valve.

[0011] In some embodiments, a third liquid level switch and a liquid level sensor are further provided on the storage cabinet; the third liquid level switch is used to control the third discharge pump to stop running when it is monitored that the amount of crushed wet garbage in the storage cabinet is lower than a fourth preset threshold; the liquid level sensor is used to output an alarm message when it is monitored that the amount of crushed wet garbage in the storage cabinet is higher than a fifth preset threshold.

[0012] In some embodiments, other equipment on the vessel includes a dewatering device, wherein the wastewater output of the dewatering device is connected to a deoiler.

[0013] In a second aspect, the present invention provides a method for treating wet garbage in a ship kitchen, comprising: storing the crushed wet garbage in the storage cabinet based on the ship kitchen wet garbage treatment system according to any one of the first aspects; and opening the remote control gate valve on the corresponding discharge pipe according to preset marine kitchen wet garbage discharge regulations to achieve the discharge treatment of the crushed wet garbage.

[0014] In some embodiments, other equipment on the ship includes a dehydration device, and the wastewater output end of the dehydration device is connected to a degreaser. The method further includes: inputting the wastewater output from the wastewater output end of the dehydration device and the kitchen grease-containing gray water into the degreaser to separate the grease and gray water; treating the grease according to the preset offshore grease discharge regulations, and treating the gray water according to the preset offshore gray water discharge regulations.

[0015] The beneficial effects brought about by the present invention are as follows:

[0016] As can be seen from the above scheme, the embodiments of the present invention provide a system and method for treating wet kitchen waste on board a ship. The crushed wet kitchen waste is stored in a storage cabinet through the vacuum suction of a vacuum collection device, which greatly reduces the generation of flushing water and reduces the load on the sewage treatment device and the degreaser. In addition, the storage cabinet is connected to multiple discharge pipes, and a remote control gate valve is provided on each discharge pipe, which can facilitate the crew to flexibly discharge the crushed wet waste according to the discharge regulations of different sea areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a ship galley wet garbage treatment system provided by an embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of another ship galley wet garbage treatment system provided by an embodiment of the present invention;

[0019] Figure 3 A schematic flow chart of a method for treating wet garbage in a ship's galley provided by an embodiment of the present invention;

[0020] Figure 4 A schematic flow chart of another method for treating wet garbage in a ship's galley provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] Figure 1 This is a structural diagram of a ship kitchen wet garbage treatment system provided by an embodiment of the present invention. Figure 1 As shown, the ship's kitchen wet garbage processing system includes a kitchen wet garbage crusher, a vacuum collection device and a storage cabinet;

[0023] The kitchen wet garbage crusher, vacuum collection device and storage cabinet are connected in sequence through pipes; the storage cabinet is connected to multiple discharge pipes, each of which is provided with a remote control gate valve, and the discharge pipes are used to discharge the crushed wet garbage to at least one of the following locations: overboard, onshore facilities, and other equipment on the ship.

[0024] Specifically, in the ship's kitchen, many types of wet garbage are generated, such as leftovers, vegetable roots, stems and leaves, bone residues, etc. The kitchen wet garbage crusher uses its powerful crushing function to crush all kinds of wet garbage into smaller crumbs or pulp; then the vacuum collection device uses vacuum suction to transfer the crushed wet garbage to the storage cabinet for storage. The storage cabinet is connected to multiple discharge pipes, and each discharge pipe is equipped with a remote control gate valve to facilitate the crew to flexibly open the corresponding discharge pipe according to the current discharge regulations of the sea area, and discharge the crushed wet garbage to different locations, such as outside the ship's side, onshore facilities, other equipment on the ship, etc. Among them, other equipment on the ship, such as the dehydration unit, dehydrates the crushed wet garbage, packs it for refrigerated storage or incineration.

[0025] Among them, the kitchen wet garbage shredder is deployed in the kitchen, and the vacuum collection device and storage cabinet can be set under the deck, occupying less space; when designing the volume of the storage cabinet, it can be calculated based on the 2 to 3 liters of food waste (in pulp) produced by each person per day and the number of days required for storage.

[0026] The ship kitchen wet garbage treatment system provided in this embodiment stores the pulverized kitchen wet garbage in a storage cabinet through the vacuum suction of a vacuum collection device, greatly reducing the generation of flushing water and reducing the load on the sewage treatment device and degreaser; in addition, the storage cabinet is connected to multiple discharge pipes, and a remote-controlled gate valve is provided on each discharge pipe, which enables the crew to flexibly discharge the pulverized wet garbage according to the discharge regulations of different sea areas.

[0027] Based on the above embodiments, Figure 2 This is a schematic diagram of another ship kitchen wet garbage treatment system provided by an embodiment of the present invention. Figure 2 As shown, the vacuum collection device includes a vacuum storage tank, a first pneumatic discharge valve is provided at the discharge outlet of the kitchen wet garbage shredder, and is connected to the vacuum storage tank through a first pipe, and the vacuum storage tank is connected to the storage cabinet through a second pipe, and the second pipe is sequentially provided with a first discharge pump and a first check valve along the direction from the vacuum storage tank to the storage cabinet.

[0028] Specifically, multiple kitchen wet garbage crushers can be provided, such as Figure 2 There are one bone grinder and two vegetable grinders in the kitchen. The discharge outlet of each kitchen wet garbage grinder is provided with a first pneumatic discharge valve, which is connected to the vacuum storage tank of the vacuum collection device through a first pipe. When the preset conditions are met (such as the grinder's grinding time reaches the set value, the garbage particle size meets the requirements, etc.), the first pneumatic discharge valve opens, and with the help of the negative pressure generated by the vacuum collection device, the crushed wet garbage is sucked into the first pipe and enters the vacuum storage tank for temporary storage. Preferably, the opening and closing of the first pneumatic discharge valve is precisely controlled by the control system to ensure the timeliness and accuracy of garbage transportation. For example, when the preset conditions are met, the control system will automatically trigger the first pneumatic discharge valve opening instruction; when the garbage transportation is completed or an abnormal situation occurs, the first pneumatic discharge valve is quickly closed to prevent air from flowing back into the vacuum storage tank and destroying its vacuum environment.

[0029] In addition, each pulverizer is also equipped with an SS safety switch valve and a flushing water solenoid valve. Only when the SS safety switch is turned on can the pulverizer start to perform garbage crushing operations, effectively preventing operators from accidentally touching dangerous areas during equipment operation and reducing the probability of safety accidents. The flushing water solenoid valve is set on the pipe between the pulverizer and the flushing port. Before the crushing operation, opening the flushing water solenoid valve can pre-flush the inside of the pulverizer to remove the garbage remaining after the last use and prevent cross-contamination between different batches of garbage. After the crushing operation is completed, opening the flushing water solenoid valve again can thoroughly clean the pulverizer, ensure that the inside of the pulverizer is clean and tidy, and extend the service life of the pulverizer.

[0030] The vacuum collection device is always in standby mode, and the ventilation ball valve on the first pipe is always open; the vacuum storage tank is connected to the storage cabinet through a second pipe, and the second pipe is sequentially provided with a first discharge pump and a first check valve along the direction from the vacuum storage tank to the storage cabinet, wherein the first discharge pump serves as a power source to push the crushed wet garbage from the vacuum storage tank to the storage cabinet, and the first check valve is a one-way valve, which can prevent the crushed wet garbage in the storage cabinet from flowing back into the vacuum storage tank.

[0031] In some embodiments, a first liquid level switch and a second liquid level switch are provided on the vacuum storage tank; the first liquid level switch is used to control the first discharge pump to stop running when it is detected that the amount of crushed wet garbage in the vacuum storage tank is lower than a first preset threshold value; the second liquid level switch is used to control the first discharge pump to start when it is detected that the amount of crushed wet garbage in the vacuum storage tank is higher than a second preset threshold value.

[0032] Specifically, the second liquid level switch LS2 is responsible for activating the first discharge pump when the amount of wet garbage in the vacuum storage tank reaches a certain level. As the kitchen wet garbage shredder continues to operate, the shredded wet garbage is continuously drawn into the vacuum storage tank through the first pipe, gradually increasing the amount of garbage in the vacuum storage tank. When the garbage level reaches a second preset threshold, LS2 quickly detects this change and feeds it back to the vacuum collection device's control box. Upon receiving the signal from LS2, the control box quickly issues a command to activate the first discharge pump. At this point, the first discharge pump begins operating, transporting the shredded wet garbage in the vacuum storage tank through the second pipe to the storage cabinet.

[0033] The first liquid level switch, LS1, controls the first discharge pump to stop when the amount of wet waste in the vacuum storage tank is low. As the first discharge pump continues to operate, wet waste is continuously discharged from the vacuum storage tank, gradually reducing the amount of waste. When the waste level falls below a preset threshold, LS1 promptly detects this state change and feeds back to the vacuum collection device's control box. Upon receiving the LS1 signal, the control box quickly issues a command to stop the first discharge pump and await the next operating instruction.

[0034] It should be noted that the first preset threshold is smaller than the second preset threshold. This setting forms a reasonable working range between LS1 and LS2. Within this range, the first discharge pump can operate stably and efficiently complete the wet garbage transportation task. The coordinated operation of the dual liquid level switches avoids the frequent start and stop of the first discharge pump, effectively prolongs the service life of the vacuum collection device, and reduces maintenance costs. They also ensure that the vacuum storage tank always maintains an appropriate amount of garbage storage, which not only avoids excessive garbage accumulation affecting system performance, but also prevents the pump from idling due to too little garbage. This greatly improves the overall operating efficiency and stability of the ship's kitchen wet garbage treatment system, and ensures the smooth progress of kitchen wet garbage treatment during ship operation.

[0035] In some embodiments, a pressure control system and a ventilation pipe are provided on the vacuum storage tank, and a filter, a second pneumatic discharge valve and a second discharge pump are provided in sequence along the ventilation pipe in a direction away from the vacuum storage tank; the pressure control system is used to monitor the pressure of the first pipe and control the start-up of the second discharge pump when the pressure of the first pipe is lower than a third preset threshold.

[0036] Specifically, the vacuum storage tank is equipped with a pressure control system (PIC) for real-time monitoring of the pressure within the first pipeline. The vacuum storage tank is also equipped with a ventilation pipeline, which is sequentially equipped with a filter, a second pneumatic discharge valve, and a second discharge pump in a direction away from the vacuum storage tank. During the process of transporting wet garbage from the shredder to the vacuum storage tank, the pressure within the first pipeline fluctuates due to changes in the shredder's operating frequency and the accumulation of garbage in the pipeline. The PIC monitors the pressure within the first pipeline in real time. If the negative pressure is insufficient, the PIC controls the opening of the second pneumatic discharge valve and the second discharge pump. The second pneumatic discharge valve provides a path for gas discharge, and the second discharge pump provides power to quickly discharge the gas within the first pipeline and the vacuum storage tank. This ensures that the pressure within the vacuum storage tank and the first pipeline remains within a safe and stable range, ensuring the normal operation of the entire wet garbage treatment system.

[0037] The filters installed on the ventilation ducts prevent impurities from entering the atmosphere. During the wet waste processing process, various gases are generated within the vacuum storage tanks. These gases may carry impurities such as tiny garbage particles, odor molecules, and bacteria. The filters, through their specialized filtering materials and structure, effectively intercept these impurities, allowing only clean gases to be discharged through the ventilation ducts. This not only protects the atmospheric environment around the ship and prevents air pollution caused by waste processing, but also prevents the accumulation of impurities in the ventilation ducts, preventing blockage and ensuring the long-term stable operation of the ventilation function.

[0038] In some embodiments, the vacuum storage tank is further provided with a bypass ventilation pipe, and a third pneumatic exhaust valve is provided on the bypass ventilation pipe.

[0039] Specifically, the bypass ventilation pipe is in a standby state, but when the filter on the ventilation pipe is clogged, or the second pneumatic discharge valve and the second discharge pump fail, causing the ventilation pipe to fail to work normally, the third pneumatic discharge valve can be opened, and the bypass ventilation pipe is connected, so that the gas in the vacuum storage tank can bypass the fault area and be discharged through the bypass ventilation pipe, thereby avoiding the pressure in the vacuum storage tank from continuing to rise due to failure to release normally.

[0040] Optionally, the ends of the bypass ventilation pipe and the ventilation pipe can be merged into one pipe, and ventilation ball valves can be respectively installed on the merged pipe, on the first pipe near the vacuum storage tank, and after the first check valve of the second pipe. The ventilation ball valve is usually in an open state. When the vacuum collection device needs to be maintained or repaired, the gas in the vacuum storage tank can be discharged and air can be introduced by opening and closing the ventilation ball valve.

[0041] In some embodiments, the storage cabinet is provided with a third pipeline and a fourth pipeline, the third pipeline is connected to multiple discharge pipelines in sequence through a third discharge pump, an electric three-way valve and a second check valve, and the fourth pipeline is connected to the third pipeline through an electric three-way valve.

[0042] Specifically, the third pipeline is the key connecting channel between the storage cabinet and multiple discharge pipelines. The third discharge pump, electric three-way valve and second check valve connected in sequence each perform corresponding functions. Among them, the third discharge pump serves as a power source to provide discharge power for the crushed wet garbage in the storage cabinet. When the crushed wet garbage in the storage cabinet needs to be discharged, the third discharge pump is started, and the electric three-way valve is connected to the third pipeline to transport the crushed wet garbage from the storage cabinet to the subsequent discharge pipeline; the second check valve can effectively prevent the discharged wet garbage from flowing back into the storage cabinet.

[0043] The fourth pipeline is connected to the third pipeline via an electric three-way valve. When the ship is in an area where waste can be discharged, the electric three-way valve connects to the third pipeline, and the storage cabinet enters the corresponding discharge pipeline through the third pipeline. When the demand for waste discharge is high, the electric three-way valve can be adjusted appropriately to allow both pipelines to participate in the discharge simultaneously, improving discharge efficiency. When the ship is in an area where waste cannot be discharged, to prevent the wet waste in the storage cabinet from condensing, the electric three-way valve can be quickly switched to connect the third and fourth pipelines. Under the action of the third discharge pump, the wet waste in the storage cabinet is self-circulated through the third pipeline, the electric three-way valve, and the fourth pipeline. Optionally, ball valves are installed on the third pipeline near and far from the storage cabinet for use during storage cabinet maintenance and overhaul.

[0044] In some embodiments, a third liquid level switch and a liquid level sensor are further provided on the storage cabinet; the third liquid level switch is used to control the third discharge pump to stop running when it is monitored that the amount of crushed wet garbage in the storage cabinet is lower than a fourth preset threshold; the liquid level sensor is used to output an alarm message when it is monitored that the amount of crushed wet garbage in the storage cabinet is higher than a fifth preset threshold.

[0045] Specifically, the liquid level sensor LC can monitor the level of shredded wet garbage in the storage cabinet in real time. When wet kitchen garbage enters the storage cabinet after being shredded and collected, the liquid level in the storage cabinet gradually rises as the garbage continues to accumulate. The LC constantly monitors the changes in the liquid level. Once it detects that the shredded wet garbage stored in the storage cabinet has reached the fifth preset threshold, the LC will immediately output an alarm message to the control system or related display terminal to remind the crew that the storage cabinet is about to be full. After receiving the alarm message, the crew can take appropriate measures in a timely manner based on the ship's location, current navigation status, and relevant discharge regulations, such as finding a suitable discharge site and preparing discharge equipment, to ensure that the wet garbage is handled in a timely manner and maintain the normal operation of the system. The alarm information can take various forms, such as sound and light alarms.

[0046] The third liquid level switch, LS, is primarily responsible for stopping the third discharge pump when the level of shredded waste in the storage cabinet is low. When the third discharge pump is operating and discharges the wet waste in the storage cabinet through the discharge pipe, the liquid level in the storage cabinet gradually decreases. LS monitors the level changes in real time. When it detects that the amount of shredded wet waste stored in the storage cabinet is below the fourth preset threshold, LS sends a signal to the control system. Upon receiving the LS signal, the control system stops the third discharge pump. Although the liquid level sensor and the third liquid level switch have different functions, they work together to ensure the stable operation of the storage cabinet and the entire wet waste treatment system. The liquid level sensor provides an early warning that the storage cabinet is about to be full, allowing the crew ample time to plan waste discharge and avoid overflow risks. The third liquid level switch prevents damage to the third discharge pump due to idling in the later stages of waste discharge.

[0047] Optionally, the storage cabinet is also connected to the flushing port through a pipe, and a flushing water solenoid valve is provided on the pipe. The flushing water solenoid valve is opened to achieve internal cleaning of the storage cabinet; the storage cabinet is also provided with a ventilation pipe, which can be connected to the end of the ventilation pipe of the vacuum storage tank to prevent the exhaust power of the first discharge pump from affecting ventilation and avoid the reverse discharge of gas into the storage cabinet.

[0048] The storage cabinet's third pipe is connected to multiple discharge pipes, one of which is connected to a shore discharge station (PS) via a remote-controlled gate valve and a shore connector. Another pipe is connected to a dehydration unit (also known as a dewatering device) via a remote-controlled gate valve and a check valve. The dehydration unit dehydrates the shredded wet garbage, which is then dried in a dryer for incineration or packaged for refrigerated storage. A check valve prevents the wet garbage from the dehydration unit from flowing back into the storage cabinet. Another pipe discharges directly overboard via a remote-controlled gate valve and a check valve, with the check valve preventing seawater from backflowing. Preferably, the storage cabinet's third pipe is also connected to a backwash port via a ball valve and a check valve for backwashing the storage cabinet pipes. The check valve prevents backwash water from flowing out.

[0049] In some embodiments, other equipment on the vessel includes a dewatering device, wherein the wastewater output of the dewatering device is connected to a deoiler.

[0050] Specifically, during ship operation, wet garbage generated in the galley contains a large amount of water, which not only increases the weight and volume of the garbage but can also cause significant inconvenience in subsequent processing. Dehydration equipment onboard ships uses physical extrusion, centrifugal separation, and other technical means to effectively separate the water from the wet garbage, significantly reducing its moisture content. After dehydration, the volume of the wet garbage is significantly reduced, making it easier to store, transport, and further process, such as drying, incineration, or packaging and refrigerated storage. This effectively improves the efficiency of the entire wet garbage treatment system.

[0051] The wastewater output end of the dehydration equipment is connected to the degreaser. Considering that the wastewater separated during the dehydration process contains a certain amount of grease, if it is discharged directly, it will not only pollute the marine environment, but also waste the available resources therein. In this embodiment, the wastewater output by the dehydration equipment is sent to the degreaser. The degreaser separates the grease in the wastewater by skimming, filtering, etc. The separated grease can be specially collected and processed, for example, it can be reused as a raw material for biodiesel, realizing resource recycling; and the grease content of the wastewater after being treated by the degreaser is greatly reduced, and it can be more convenient to meet the discharge standards or further sewage treatment in the future, reducing the negative impact on the marine ecological environment.

[0052] Based on the above-mentioned embodiments, the ship-triggered wet garbage treatment system provided in this embodiment consists of a kitchen wet garbage pulverizer, a vacuum collection device, a storage cabinet and corresponding pipelines, valves, etc. Through the vacuum collection method, the kitchen wet garbage is collected in a storage cabinet with a calculated capacity, and then can be discharged to the shore or dehydrated and packaged for refrigerated storage or incineration, thereby reducing the load of the sewage treatment device and the degreaser, fully meeting the operation requirements of sea areas such as coastlines or "special sea areas" where the discharge of kitchen garbage is prohibited. In addition, the entire treatment process is completed by the machine, reducing the maintenance difficulty for crew members.

[0053] Figure 3 The following is a flow chart of a method for treating wet garbage in a ship's kitchen provided by an embodiment of the present invention. Figure 3 As shown, the processing method includes:

[0054] Step S301: The ship kitchen wet garbage processing system is used to store the crushed wet garbage in the storage cabinet.

[0055] Specifically, the ship galley wet garbage disposal system provided in this embodiment is a one-button start system. When a crew member presses the start button in the control system, the shredder's SS safety switch activates, and the shredder begins pulverizing the galley wet garbage. Once pulverization is complete, the first pneumatic discharge valve opens, and under the negative pressure generated by the vacuum collection device, the wet garbage is sucked into the vacuum storage tank through the first pipe. If any residue remains in the shredder, the shredder's flushing water solenoid valve can be opened to flush the shredder, and the flushing water is also sucked into the vacuum storage tank under the negative pressure.

[0056] The vacuum collection device is always in standby operation. The PIC detects the vacuum degree of the first pipeline between the crusher and the vacuum collection device. If the negative pressure on the first pipeline does not reach the set standard, the PIC controls the filter, the second discharge pump, and the second pneumatic discharge valve on the ventilation pipeline to open for exhaust to ensure that the pipeline is in a negative pressure state.

[0057] Two liquid level switches LS1 and LS2 are set on the vacuum storage tank of the vacuum collection device. When the liquid level reaches a high level (LS2 alarm), the first discharge pump is controlled to start and discharge the garbage into the storage cabinet; when the liquid level is at a low level (LS1 alarm), the first discharge pump is controlled to stop working.

[0058] The storage cabinet is equipped with a liquid level switch LS and a liquid level sensor LC. LS controls the third discharge pump to stop at a low level to prevent empty discharge; LC is used for high-level alarm to inform the crew that the storage cabinet is full, but the third discharge pump will not start automatically, and the crew needs to handle it according to the actual situation; if the collected garbage in the storage cabinet has not reached the specified discharge area and there is a concern about condensation, the electric three-way valve can enable the system to form an internal circulation stirring to prevent condensation.

[0059] Step S302: opening the remote control gate valve on the corresponding discharge pipe according to the preset marine kitchen wet garbage discharge regulations to realize the discharge treatment of the shredded wet garbage.

[0060] Specifically, the storage cabinet is connected to multiple discharge pipes for discharging the crushed wet garbage to different locations, such as overboard, onshore facilities and other equipment on the ship, such as dehydration units; taking into account that different sea areas and regions have different regulations on the discharge of wet garbage from offshore kitchens, the crew can understand the discharge regulations of the sea area in which they are located in real time during the voyage. When the ship meets the wet garbage discharge regulations of the corresponding sea area, the crew will open the remote control gate valve on the corresponding discharge pipe according to instructions to realize the discharge and treatment of wet garbage.

[0061] In some embodiments, other equipment on the ship includes a dehydration device, and the wastewater output end of the dehydration device is connected to a degreaser. The method further includes: inputting the wastewater output from the wastewater output end of the dehydration device and the kitchen grease-containing gray water into the degreaser to separate the grease and gray water; treating the grease according to the preset offshore grease discharge regulations, and treating the gray water according to the preset offshore gray water discharge regulations.

[0062] Specifically, kitchen gray water and wastewater output from dehydration equipment may contain grease, which is fed into a degreaser to separate the grease and gray water. Different sea areas have different regulations on grease discharge. For example, in sensitive sea areas such as marine ecological protection areas and sea areas near ports, the discharge of untreated grease may be prohibited. When the ship cannot discharge grease directly at sea, this embodiment will collect and store the separated grease. The ship is equipped with a special grease storage tank or container for temporary storage of grease. When the ship arrives at a port or onshore facility that is allowed to receive grease, the stored grease is transferred ashore through specific conveying equipment and subsequently processed by professional institutions, such as processing it into biodiesel raw materials or performing harmless incineration. This not only avoids the pollution of the marine environment by grease, but also achieves a certain degree of resource recycling.

[0063] Similarly, offshore greywater discharge regulations vary by sea area, and vessels must determine whether their greywater meets the standards based on the specific regulations of the sea area they are in, in order to determine whether it can be discharged. If the greywater treated by the degreaser meets the preset offshore greywater discharge regulations, it can be discharged into the sea through the vessel's discharge system. If the greywater does not meet the discharge requirements, further treatment is required. For example, the vessel is equipped with a sewage treatment plant, which can be used to feed the greywater for advanced treatment. For example, through processes such as biodegradation, filtration, and disinfection, the pollutant content in the greywater is reduced to meet the discharge standards before discharge. Alternatively, the greywater can be stored and transferred to an onshore sewage treatment facility for treatment upon arrival at port.

[0064] Figure 4 This is a flowchart of another method for treating wet garbage in a ship's kitchen provided by an embodiment of the present invention. Figure 4 The following diagram shows the treatment paths for food waste and kitchen grey water (containing grease):

[0065] The food waste treatment process includes:

[0066] (1) Crushing: Food waste first enters the crusher for crushing, breaking large pieces of food waste into smaller particles.

[0067] (2) Storage: The crushed food waste is transferred to a storage cabinet through a vacuum collection device for temporary storage.

[0068] (3) Discharge: In accordance with the regulations for the discharge of wet garbage from the marine galley, the garbage in the storage cabinet shall be discharged overboard, to the shore installation, or into the dehydration unit on the ship.

[0069] (4) Post-dehydration treatment: When the garbage in the storage cabinet enters the dehydration unit, the water in the garbage is separated through the dehydration operation, generating residue and wastewater. The residue can be dried and then incinerated; or stored in a cold storage and then transported to shore facilities for treatment; or directly discharged overboard if it complies with the discharge regulations.

[0070] For kitchen grey water, the treatment process includes:

[0071] (1) Degreasing: The kitchen gray water (containing grease) and the wastewater generated by the dehydration unit are fed into the degreasing device, which separates the grease from the wastewater.

[0072] (2) Grease treatment: Grease is collected in the ship's sludge tank or transported to shore facilities for treatment after collection.

[0073] (3) Wastewater treatment: The water treated by the degreaser enters the grey water tank and is either discharged overboard when it meets the discharge regulations, or enters the black / grey water storage tank. It can then be transported to shore facilities or enter a sewage treatment plant for further treatment.

[0074] The ship kitchen wet garbage treatment method provided in this embodiment can temporarily store the crushed wet garbage in a storage cabinet based on the ship kitchen wet garbage treatment system, and perform different discharge treatments according to different material properties, thereby achieving garbage reduction, harmlessness and partial resource utilization.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0076] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A ship kitchen wet garbage treatment system, characterized in that: Includes kitchen wet waste disposer, vacuum collection unit and storage cabinet; The kitchen wet garbage crusher, vacuum collection device and storage cabinet are connected in sequence through pipelines; The storage cabinet is connected to a plurality of discharge pipes, each of which is provided with a remote control gate valve. The discharge pipes are used to discharge the shredded wet garbage to at least one of the following locations: overboard, onshore facilities, and other equipment on the ship.

2. The system according to claim 1, wherein: The vacuum collection device includes a vacuum storage tank. A first pneumatic discharge valve is provided at the discharge outlet of the kitchen wet garbage shredder and is connected to the vacuum storage tank through a first pipe. The vacuum storage tank is connected to the storage cabinet through a second pipe. The second pipe is sequentially provided with a first discharge pump and a first check valve along the direction from the vacuum storage tank to the storage cabinet.

3. The system according to claim 2, characterized in that The vacuum storage tank is provided with a first liquid level switch and a second liquid level switch; The first liquid level switch is used to control the first discharge pump to stop running when it is detected that the amount of shredded wet garbage in the vacuum storage tank is lower than a first preset threshold; The second liquid level switch is used to control the start-up of the first discharge pump when it is detected that the amount of shredded wet garbage in the vacuum storage tank is higher than a second preset threshold.

4. The system according to claim 2 or 3, characterized in that The vacuum storage tank is provided with a pressure control system and a ventilation pipe, and the ventilation pipe is provided with a filter, a second pneumatic discharge valve and a second discharge pump in sequence along the direction away from the vacuum storage tank; The pressure control system is used to monitor the pressure of the first pipeline and control the second discharge pump to start when the pressure of the first pipeline is lower than a third preset threshold.

5. The system according to claim 4, characterized in that The vacuum storage tank is further provided with a bypass ventilation pipeline, and a third pneumatic exhaust valve is provided on the bypass ventilation pipeline.

6. The system according to any one of claims 1 to 3, characterized in that: The storage cabinet is provided with a third pipeline and a fourth pipeline. The third pipeline is connected to a plurality of discharge pipelines through a third discharge pump, an electric three-way valve and a second check valve in sequence. The fourth pipeline is connected to the third pipeline through the electric three-way valve.

7. The system according to claim 6, characterized in that The storage cabinet is also provided with a third liquid level switch and a liquid level sensor; The third liquid level switch is used to control the third discharge pump to stop running when it is detected that the amount of shredded wet garbage in the storage cabinet is lower than a fourth preset threshold; The liquid level sensor is used to output an alarm message when it detects that the amount of shredded wet garbage in the storage cabinet is higher than a fifth preset threshold.

8. The system according to any one of claims 1 to 3, characterized in that: Other equipment on the vessel includes a dewatering device, the wastewater output of which is connected to a deoiler.

9. A method for treating wet garbage in ship galleys, characterized in that: include: Based on the ship kitchen wet garbage processing system according to any one of claims 1 to 8, the crushed wet garbage is stored in the storage cabinet; According to the preset marine kitchen wet garbage discharge regulations, the remote control gate valve on the corresponding discharge pipeline is opened to realize the discharge treatment of the crushed wet garbage.

10. The method according to claim 9, characterized in that Other equipment on the vessel includes a dewatering device, wherein a wastewater output of the dewatering device is connected to a degreaser, and the method further comprises: Inputting the wastewater output from the wastewater output end of the dehydration equipment and the kitchen grease-containing ash water into the degreaser to separate the grease and ash water; Grease is handled in accordance with the regulations for the discharge of grease to sea, and grey water is handled in accordance with the regulations for the discharge of grey water to sea.

Images