Ship ecological circulation system

Abstract

The invention discloses a ship ecological circulation system which comprises a production module, a waste treatment and reuse module, a carbon capture module and an energy comprehensive management module, and the production module realizes continuous growth and cold storage of vegetables; the waste treatment and recycling module is used for treating domestic sewage, vegetable planting system wastewater and kitchen waste wastewater, biogas slurry generated by fermentation of kitchen waste is treated and then conveyed to a vegetable planting system aeroponic culture nutrient solution pool, and biogas combustion heat is recycled, stored and uniformly utilized through the energy comprehensive management module; the carbon capture module recovers CO2 from ship tail gas for plant photosynthesis, redundant CO2 is liquefied and stored, material cyclic utilization is achieved, and greenhouse gas emission is reduced. The energy comprehensive management module is used for converting renewable energy into electric energy for storage; and the waste heat recycling system is used for uniformly collecting and storing main engine electric energy, auxiliary boiler steam, incinerator heat energy and heat of other heat sources in a heat storage water tank, and heat energy recycling is achieved.

Description

Technical Field

[0001] This invention belongs to the field of ship life support technology, specifically relating to a ship ecological cycle system based on the life support needs and environmental protection of ocean-going vessels, offshore platforms, and other ships during long-term self-sustaining operation. Background Technology

[0002] The life support system for ocean-going vessels, offshore platforms, and other fixed or mobile facilities mainly includes the following aspects: 1. Supply and Storage of Supplies: Besides supply ships providing fuel, food, and fresh water to vessels at sea, ships on long voyages or under conditions where resupply is difficult rely on replenishment when docked. Fuel is stored in oil tanks and equipped with appropriate fire-fighting facilities. Fresh water can be carried and stored in fresh water tanks during port calls, or it can be produced through seawater desalination technologies such as reverse osmosis and flash evaporation. Food storage is the most challenging aspect, and it is generally stored in onboard cold storage warehouses using low-temperature refrigeration technology. Long-haul vessels typically have separate storage areas for fish, meat, vegetables, dairy products, and dry goods, while short-haul vessels have high- and low-temperature storage areas. Refrigeration units enable precise temperature control in these cold storage warehouses, typically allowing for temperature adjustments from 0-10℃ with an accuracy of ±0.5℃. However, due to the short shelf life of leafy vegetables, in order to meet the needs of long-term storage, ocean-going vessels usually consume leafy vegetables first or choose varieties that can be stored for a long time during operation. In addition, some ocean-going vessels use box cultivation to grow vegetables, which is simply a simple transplantation of land cultivation to the ship. Because it cannot solve problems such as culture medium, light, and temperature, it cannot solve the problem of continuous supply of fresh vegetables.

[0003] 2. Pollutant collection and disposal: Waste generated by crew members in their daily lives mainly includes two categories: sewage and garbage. Sewage mainly includes black water, kitchen grey water, and washing grey water. Conventional ships or platforms generally use gravity or vacuum collection-treatment-discharge methods for treatment. Each ship is equipped with one or more sewage treatment devices according to the rated number of crew members. After treatment, the sewage meets the requirements of MEPC.227(64) and other standards for discharge. Due to the relatively mature water production capacity, the application of greywater reuse technology is only carried out on some ships. Greywater is used for toilet flushing or deck cleaning. Most ships usually adopt the treatment-discharge mode. Garbage is solid waste, including kitchen waste, domestic waste, medical waste, etc. At present, the main treatment methods used by ships include crushing, compaction, dehydration, sterilization and incineration. The ultimate goal of the treatment of these solid wastes is to make them harmless and reduce their volume. Resource utilization has not yet been carried out. For food waste, it is mostly collected by gravity or vacuum and then crushed and ground to below 25mm to meet the requirements of Annex V of the MARPOL 73 / 78 Anti-Pollution Convention for direct discharge, or dehydrated and dried to achieve a volume reduction rate of not less than 70%. For solid waste such as plastics, wood, cardboard, glass, and metal cans, volume reduction is generally achieved through crushing-compacting-packing-storage or incineration, depending on the characteristics of the waste. Compacting and packing can generally reduce the volume of waste by 5-10 times, effectively reducing the storage space required in the ship's hold. For incinerable waste, incineration can achieve a volume reduction of more than 85% and a weight reduction of more than 90%. The residue produced after incineration is stored in the ship's hold and can be directly discharged in the sea area where it can be discharged. Incineration technology has restrictions on the moisture content of solid waste, requires more configuration resources, and the exhaust gas emitted from the incineration flue needs to be treated to reduce secondary pollution to the environment. Furthermore, the waste heat generated by ship incineration has not been utilized.

[0004] The above analysis reveals that, on the one hand, the supply of fuel, fresh water, and food required by ships is subject to certain limitations, and food, especially fresh vegetables, cannot be continuously supplied, failing to meet the living needs of the crew. On the other hand, resource utilization technologies are rarely applied on ships, resulting in a significant waste of resources and energy on board.

[0005] Meanwhile, with the growing prominence of global climate change, reducing greenhouse gas emissions has become a focal point of international concern. As a crucial mode of transportation, shipping's carbon emissions are a significant concern. The International Maritime Organization (IMO) has successively introduced a series of carbon reduction policies. The application of clean energy can provide energy-saving and emission-reduction solutions for new ships, while older ships can effectively control carbon dioxide emissions from their exhaust by installing carbon capture systems, significantly improving their environmental performance while maintaining a relatively balanced cost between retrofitting and operation.

[0006] Existing related patents, such as patent (CN120615693A) which discloses a hydroponic vegetable growing compartment for ships and for ocean-going polar vessels, include a cultivation system comprising cultivation pipes for growing vegetables, a nutrient solution circulation system comprising a nutrient solution storage tank, circulation pipes connecting the storage tank and the cultivation pipes, and a pump for driving the flow of the nutrient solution, and an air conditioning system for controlling temperature and humidity. This hydroponic method ensures the supply of fresh vegetables during long voyages. However, it does not mention a solution for handling waste such as crop residues, old leaves, and roots after harvesting. The organic carbon, nitrogen, phosphorus, and other nutrients contained in these wastes are not recycled, resulting in material waste and increasing the pressure on ship waste disposal (garbage transfer costs are high for ocean-going vessels); a closed loop of "nutrient consumption-replenishment-regeneration" is not established. After long-term circulation, root exudates and micro-pollutants may accumulate in the nutrient solution, and the ratio of nutrient elements may become unbalanced. Furthermore, the supplemental lighting and air conditioning system (heat pump unit) both rely on the ship's main power supply, failing to utilize the ship's own renewable energy sources, which increases the load on the ship's main power generation system and does not meet the core requirements of energy conservation and emission reduction for ocean-going vessels.

[0007] Therefore, in order to address the material and environmental issues of long-term self-sufficient operation of ocean-going vessels and offshore platforms, and to meet the living needs of crew members, a fully closed-loop integrated survival support system solution that recycles materials and energy is needed. Summary of the Invention

[0008] The purpose of this invention is to propose a ship ecological cycle system. This system achieves a dual cycle of matter and energy on board through resource utilization technology, which enhances the long-term self-sustaining operation capability of ocean-going vessels, offshore platforms and other ships while meeting environmental protection policy requirements and the living support needs of crew members during long-term voyages.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A ship ecological recycling system includes a production module, a waste treatment and reuse module, a carbon capture module, and an energy management module. The production module includes a precision temperature-controlled refrigeration system and a vegetable cultivation system, utilizing hydroponics technology and employing an LED light source control unit, an intelligent temperature and humidity control unit, a CO2 enrichment unit, and a low-temperature refrigeration and preservation unit to achieve continuous vegetable growth and cold storage. The waste treatment and reuse module includes a wastewater treatment and reuse system and a solid waste treatment and reuse system. The wastewater treatment and reuse system employs a combined process of pretreatment + biodegradation + greywater reuse + disinfection to recycle domestic wastewater. Wastewater from the vegetable planting system and kitchen waste treatment are treated to meet standards. Further treatment is then carried out on top of this standard treatment to ensure that the effluent meets the irrigation water quality standards for non-raw vegetable crops and the clean water standards. This reclaimed water is used as a supplement to the nutrient solution and clean water for the aeroponic system. The solid waste treatment and reuse system includes kitchen waste treatment and reuse equipment and solid waste treatment equipment. The kitchen waste treatment and reuse equipment employs pretreatment + anaerobic digestion + resource utilization. The biogas slurry produced by kitchen waste fermentation is treated by the wastewater treatment system and then transported to the aeroponic nutrient solution tank of the vegetable planting system. The heat from biogas combustion is then used for energy integration. The integrated management module recycles, stores, and utilizes food waste, converting it into liquid organic fertilizer and heat energy. The solid waste treatment equipment effectively reduces the volume and weight of incinerable waste through combustion. Simultaneously, the heat generated during incineration is recovered, stored, and utilized through the integrated energy management module. The exhaust gas from incineration is treated by the carbon capture module and discharged only after meeting emission standards. The carbon capture module includes a tail gas treatment unit, a CO2 capture unit, and a CO2 utilization unit. It recovers CO2 from ship exhaust to supply plant photosynthesis, and liquefies and stores excess CO2, achieving material recycling while effectively reducing greenhouse gas emissions. The energy... The integrated management module includes a renewable energy utilization system, a waste heat recovery and utilization system, and an energy management system. The renewable energy utilization system is used to convert renewable energy into electrical energy for storage as a supplement to the ship's electrical power. The waste heat recovery and utilization system includes a heat energy recovery and storage system and a heat energy utilization system. The heat energy recovery and storage system collects and stores the heat from the main engine, auxiliary boiler steam, incinerator heat, and other heat sources in a hot water storage tank. The heat energy utilization system includes a heat pump unit and a heat exchanger. The heat pump unit improves the quality of waste heat, and the heat exchanger delivers the heat energy to the air conditioning and hot water systems to achieve heat energy recycling.

[0010] Furthermore, the precise temperature-controlled refrigeration system is used to store food such as shore-based port supply vegetables and fresh vegetables produced by the vegetable planting system.

[0011] Furthermore, the vegetable cultivation system includes a vegetable cultivation rack, a plant growth LED light strip, a constant temperature and humidity air conditioning system, an aeroponic system, and a centralized control system. The plant growth LED light strip, the constant temperature and humidity air conditioning system, and the aeroponic system are electrically connected to the centralized control system to ensure a continuous supply of vegetables. The vegetable cultivation rack is a mobile multi-layer three-dimensional cultivation rack, with the number of groups and layers configured according to the cabin conditions. The plant growth LED light strip uses LEDs as light sources to provide illumination for the plants, and the light intensity and wavelength are adjusted according to the needs of plant growth to adapt to the different growth requirements of plants.

[0012] Furthermore, the constant temperature and humidity air conditioning system includes a combined constant temperature and humidity air conditioning unit, a distributor, supply and return air ducts, and electric heating tubes, which are used to maintain the temperature and humidity in the plant factory within the set value and allowable fluctuation range, and to regulate the air composition through carbon dioxide airbags and external fresh air exhaust fans.

[0013] Furthermore, the aeroponic system includes a nutrient solution tank, a nutrient solution tank pump, a freshwater supply pump, a spraying device, and a controller. The nutrient solution tank pump, the freshwater supply pump, and the spraying device are electrically connected to the controller. The nutrient solution in the nutrient solution tank is supplied to the plant roots by the nutrient solution pump and the atomizing nozzle. The remaining nutrient solution is filtered through the return pipe and then returned to the nutrient solution tank, realizing the recycling of the nutrient solution.

[0014] Furthermore, the centralized control system includes a temperature and humidity sensor, a CO2 concentration sensor, a water supply pressure sensor, a light intensity sensor, and a control cabinet. The temperature and humidity sensor, CO2 concentration sensor, water supply pressure sensor, and light intensity sensor are electrically connected to the control cabinet to realize automatic monitoring and automatic control of the vegetable planting system.

[0015] Furthermore, the CO2 capture unit includes a CO2 absorption and desorption module and a CO2 compression and liquefaction module. A pure amine solution is used as an absorbent to transfer CO2 from the gas phase to the liquid phase. The CO2 is then released from the absorbent by heating with waste heat from the main or auxiliary boiler through the energy management module, thus regenerating the absorbent. The released CO2 is then compressed, cooled, liquefied, and stored. The CO2 utilization unit is used to transport a portion of the captured CO2 to the vegetable planting system to supply the plants with photosynthesis, promoting plant production, while excess CO2 is sealed.

[0016] Furthermore, the energy management system is used to intelligently regulate the energy consumption of each module, prioritize the use of renewable energy, complement multiple types of energy, and adopt a tiered utilization method for recovered heat to improve reuse efficiency; and to denitrify the ship's exhaust gas, including main engine combustion exhaust gas and incinerator exhaust gas, according to the ship's main engine operating conditions, and then recover waste heat; the renewable energy utilization system includes shipboard solar panels, small wind turbines, and battery energy storage systems, with the shipboard solar panels, small wind turbines, and battery energy storage systems electrically connected.

[0017] Furthermore, the heat energy in the temperature control of the vegetable planting system in the production module comes from the recovery and storage of waste heat from the main equipment by the energy integrated management module, realizing the reuse of heat energy; the CO2 in the gas regulation control of the vegetable planting system comes from the CO2 captured in the ship exhaust gas by the carbon capture module, realizing the reuse of CO2; the nutrient solution in the aeroponic system of the vegetable planting system comes from the water reuse component in the sewage treatment equipment of the waste treatment and reuse module, realizing the reuse of water resources and nitrogen and phosphorus elements.

[0018] Furthermore, the waste heat of the energy integrated management module comes from the main unit's electrical energy, auxiliary boiler steam, heat generated by biogas combustion from anaerobic fermentation of waste in the waste treatment and reuse module, and combustion heat energy from the incinerator. It is then transported to the compartments where equipment such as the production module and waste treatment and reuse module are located through heat exchange equipment and air conditioning system for temperature control of the corresponding compartment environment and water body, thereby realizing the recycling of energy.

[0019] Compared with the prior art, the present invention has significant advantages: This invention discloses a ship ecological recycling system that can meet the living needs of ocean-going vessels, offshore platforms, and other vessels for long-term self-sufficient operation, solve the problems of pollutant emission compliance and carbon emission faced by ships, and achieve food self-sufficiency for several months to more than half a year through the recycling of materials and energy. Nitrogen, phosphorus, CO2 and other substances are recycled, freshwater reuse rate is >20%, waste heat recovery utilization rate is >50%, ships improve their own resource utilization rate, effectively reduce dependence on external supplies, reduce operating costs, and are suitable for long-voyage missions of ocean-going vessels. Attached Figure Description

[0020] Figure 1 This is a block diagram of the ship ecological cycle system of the present invention. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] like Figure 1As shown, the present invention provides a ship ecological cycle system that proposes a closed-loop comprehensive survival support system solution for the recycling of materials and energy, based on the long-term self-sustaining operation needs and environmental protection issues of ocean-going vessels, offshore platforms, and other ships.

[0023] The system includes a production module, a waste treatment and reuse module, a carbon capture module, and an integrated energy management module.

[0024] I. The production module includes a precision temperature-controlled refrigeration system and a vegetable cultivation system. Utilizing hydroponics technology, it achieves continuous vegetable growth and cold storage through LED light source control, intelligent temperature and humidity control, CO2 enrichment, and low-temperature refrigeration preservation technologies. The precision temperature-controlled refrigeration system can be used to store food such as shore-based port supply vegetables and fresh vegetables produced by the vegetable cultivation system.

[0025] The vegetable cultivation system includes vegetable cultivation racks, LED light strips for plant growth, a constant temperature and humidity air conditioning system, an aeroponic system, and a centralized control system, which can ensure a continuous supply of vegetables.

[0026] The vegetable cultivation rack adopts a mobile multi-layer three-dimensional cultivation rack, and the number of groups and layers can be configured according to the conditions of the ship's cabin.

[0027] LED light strips for plant growth use LEDs (light-emitting diodes) as the light source to provide illumination for plants. The light intensity and wavelength can be adjusted according to the needs of different plant growth.

[0028] The constant temperature and humidity air conditioning system consists of a combined constant temperature and humidity air conditioning unit, air distributor, supply and return air ducts, and electric heating tubes. It maintains the temperature and humidity in the plant factory within the set value and within the allowable fluctuation range, and regulates the air composition through carbon dioxide airbags and external fresh air exhaust fans.

[0029] The aeroponic system includes a nutrient solution tank, a nutrient solution tank pump, a freshwater supply pump, a spraying device, and a controller. The nutrient solution in the nutrient solution tank is pumped through the atomizing nozzles to form an aerosol that supplies the plant roots. The remaining nutrient solution is filtered through a return pipe and then returned to the nutrient solution tank, thus achieving the recycling of the nutrient solution.

[0030] The centralized control system includes temperature and humidity sensors, CO2 concentration sensors, water supply pressure sensors, light intensity sensors, and a control cabinet. It is used to realize automatic monitoring and automatic control of the vegetable planting system.

[0031] II. The waste treatment and reuse module includes a wastewater treatment and reuse system and a solid waste treatment and reuse system.

[0032] The wastewater treatment and reuse system adopts a combined process of pretreatment + biodegradation + greywater reuse + disinfection treatment to treat domestic sewage (including black water, kitchen grey water and washing grey water), vegetable planting system wastewater, and kitchen waste treatment wastewater to meet standards. On the basis of meeting the standards, further treatment is carried out to ensure that the greywater effluent meets the irrigation water quality standards for non-raw vegetable crops and the clean water standards. The greywater is used as a supplement to the nutrient solution and clean water for the aeroponic system.

[0033] The solid waste treatment and reuse system includes equipment for treating and reusing kitchen waste and equipment for treating solid waste. The kitchen waste treatment and reuse equipment employs a pretreatment + anaerobic digestion + resource utilization approach. The biogas slurry produced during kitchen waste fermentation is treated by a wastewater treatment system and then transported to the aeroponic nutrient solution tank of the vegetable planting system. The heat from the biogas combustion is recovered, stored, and utilized uniformly through an integrated energy management module, converting kitchen waste into liquid organic fertilizer and thermal energy. The solid waste treatment equipment effectively reduces the volume and weight of waste by burning incinerable waste. Simultaneously, the heat generated during incineration is recovered, stored, and utilized uniformly through an integrated energy management module. The exhaust gas generated during incineration is treated uniformly through a carbon capture module before being discharged in compliance with standards.

[0034] III. The carbon capture module includes an exhaust gas treatment unit, a CO2 capture and CO2 utilization unit. By recovering CO2 from ship exhaust to supply plant photosynthesis, and liquefying and storing excess CO2, it achieves material recycling while effectively reducing greenhouse gas emissions.

[0035] Exhaust gas treatment involves denitrification of ship exhaust gas (main engine combustion exhaust gas, incinerator exhaust gas, etc.) according to the ship's main engine operating conditions, and waste heat recovery.

[0036] The CO2 capture unit includes a CO2 absorption and desorption module and a CO2 compression and liquefaction module. It uses a pure amine solution as an absorbent to transfer CO2 from the gas phase to the liquid phase. Through an integrated energy management module, waste heat from the main or auxiliary boiler is used to release the CO2 from the absorbent, thus regenerating the absorbent. The released CO2 is then compressed, cooled, liquefied, and stored.

[0037] CO2 Utilization Unit: A portion of the captured CO2 is transported to the vegetable planting system to support plant photosynthesis, promote plant production, and the excess CO2 is stored.

[0038] IV. The integrated energy management module includes a renewable energy utilization system, a waste heat recovery and utilization system, and an energy management system.

[0039] The renewable energy utilization system includes shipboard solar panels, small wind turbines, and battery energy storage systems, which convert renewable energy into electrical energy and store it as a supplement to the ship's electrical power.

[0040] Waste heat recovery and utilization systems include heat energy recovery and storage systems and heat energy utilization systems. The heat energy recovery and storage system collects and stores heat from the main boiler, auxiliary boiler steam, incinerator heat, and other heat sources in a hot water storage tank. The heat energy utilization system includes heat pump units and heat exchangers. Heat pump units improve the quality of waste heat, and heat exchangers transfer the heat energy to air conditioning and hot water systems, achieving heat energy recycling.

[0041] The energy management system intelligently regulates the energy consumption of each module, prioritizes the use of renewable energy, complements multiple types of energy, and adopts a cascade utilization method for recovered heat to improve reuse efficiency.

[0042] The heat energy in the temperature control of the vegetable planting system in the production module comes from the waste heat recovery and storage of the main unit and other equipment by the energy integrated management module, realizing the reuse of heat energy.

[0043] In the production module, the CO2 in the gas regulation and control of the vegetable planting system comes from the CO2 captured in the ship's exhaust gas by the carbon capture module, thus realizing the reuse of CO2.

[0044] The nutrient solution in the aeroponic system of the vegetable planting system in the production module comes from the water reuse component of the sewage treatment equipment in the waste treatment and reuse module, realizing the reuse of water resources and nitrogen and phosphorus elements.

[0045] The waste heat of the integrated energy management module comes from the main unit's electrical energy, auxiliary boiler steam, heat generated by biogas combustion from anaerobic fermentation of waste in the waste treatment and reuse module, and combustion heat energy from the incinerator. It is then transported to the compartments where the production module, waste treatment and reuse module, and other equipment are located through heat exchange equipment and air conditioning system for temperature control of the corresponding compartment environment and water body, so as to realize the recycling of energy.

[0046] The specific implementation process of the system of the present invention is as follows: 1) Fresh vegetables produced by the vegetable planting system in the daily food production module for crew members, as well as domestic sewage (urine, feces, kitchen ash water, washing ash water), kitchen waste, and domestic waste generated, are collected and sent to the waste treatment and reuse module.

[0047] 2) Domestic sewage and biogas slurry generated from garbage degradation enter the sewage treatment and reuse system. Through pretreatment + biodegradation + disinfection, the treated water is discharged in compliance with standards. Further deep treatment is carried out to meet the irrigation water quality standards for non-raw vegetable crops and the clean water standards. The reclaimed water is transported to the nutrient solution tank of the vegetable planting system in the production module as a nutrient solution supplement, and can also be used for cleaning water supplements such as toilet flushing and deck cleaning.

[0048] 3) Food waste enters the food waste treatment equipment, and through pretreatment + anaerobic digestion + resource utilization, the biogas slurry produced by the fermentation of food waste is transported to the sewage treatment system, and after treatment, it is transported to the nutrient solution tank of the vegetable planting system in the production module; the heat from biogas combustion is recovered, stored and utilized uniformly through the energy integrated management module.

[0049] 4) Solid waste such as plastic, wood, and cardboard enters the solid waste treatment equipment and is burned in the incinerator to reduce volume and quantity. The heat generated by incineration is recovered, stored and utilized uniformly through the energy integrated management module, and the exhaust gas generated by incineration is transported to the carbon capture module for treatment.

[0050] 5) The carbon capture module denitrifies the exhaust gas from the main unit combustion and the exhaust gas from the incinerator, and uses an alcohol amine absorbent to absorb CO2 in the exhaust gas. Then, the waste heat provided by the energy management module is used to desorb CO2 and regenerate the absorbent. The captured CO2 is transported to the vegetable planting system in the production module to supply the plants for photosynthesis. Excess CO2 is compressed, liquefied and stored.

[0051] 6) The integrated energy management module collects and stores the heat from the main unit's electrical energy, auxiliary boiler steam, incinerator heat energy, and biogas combustion heat energy in a unified hot water storage tank. It uses heat pump technology to improve the quality of waste heat and delivers the heat to various modules of the system and the heat transfer water system through heat exchange equipment and air conditioning system. This keeps the temperature of the vegetable planting system in the production module at 18~25℃, which is conducive to vegetable growth.

[0052] 7) The vegetable planting system in the production module utilizes nutrient solution provided by the waste treatment and recycling module, CO2 provided by the carbon capture system, and heat energy provided by the energy management module to supplement nitrogen and phosphorus fertilizers, control constant temperature and humidity, and enrich CO2. Vegetables are produced through soilless cultivation technologies such as aeroponics. Excess vegetables are stored in the precise temperature-controlled refrigeration system in the production module to ensure a continuous supply of vegetables for the crew.

[0053] 9) Furthermore, the energy management module can intelligently allocate the energy consumption of each module in the system, and comprehensively allocate and utilize renewable energy and recovered waste heat to reduce ship energy consumption and reduce operating costs.

[0054] 10) The above process realizes the resource utilization of the entire ecological cycle system, forming a dual cycle of materials and energy.

Claims

1. A ship ecological cycle system, characterized in that: The system includes a production module, a waste treatment and reuse module, a carbon capture module, and an energy management module. The production module comprises a precision temperature-controlled refrigeration system and a vegetable cultivation system, utilizing hydroponics technology. Through an LED light source control unit, an intelligent temperature and humidity control unit, a CO2 enrichment unit, and a low-temperature refrigeration and preservation unit, it achieves continuous vegetable growth and cold storage. The waste treatment and reuse module includes a sewage treatment and reuse system and a solid waste treatment and reuse system. The sewage treatment and reuse system employs a combined process of pretreatment + biodegradation + greywater reuse + disinfection to treat domestic sewage, vegetable cultivation system wastewater, and kitchen waste treatment wastewater to standard levels. Further treatment is then applied to ensure that the greywater effluent meets irrigation water quality standards for non-raw vegetable crops and clean water standards. This greywater is used as a nutrient solution supplement and clean water supplement for the aeroponic system. The solid waste treatment and reuse system includes… The equipment includes food waste treatment and reuse equipment and solid waste treatment equipment. The food waste treatment and reuse equipment employs pretreatment + anaerobic digestion + resource utilization. The biogas slurry produced by food waste fermentation is treated by a wastewater treatment system and then transported to the aeroponic nutrient solution tank of a vegetable planting system. The heat from biogas combustion is recovered, stored, and utilized uniformly through an energy management module, converting food waste into liquid organic fertilizer and heat energy. The solid waste treatment equipment effectively reduces the volume and weight of incinerable waste through combustion. Simultaneously, the heat generated from combustion is recovered, stored, and utilized uniformly through an energy management module. The exhaust gas generated from combustion is treated uniformly through a carbon capture module and discharged only after meeting emission standards. The carbon capture module includes a tail gas treatment unit, a CO2 capture unit, and a CO2 utilization unit. By recovering CO2 from ship exhaust to supply plant photosynthesis, and liquefying and storing excess CO2, it achieves material recycling while effectively reducing greenhouse gas emissions. The integrated energy management module includes a renewable energy utilization system, a waste heat recovery and utilization system, and an energy management system. The renewable energy utilization system is used to convert renewable energy into electrical energy for storage as a supplement to the ship's electrical energy. The waste heat recovery and utilization system includes a heat energy recovery and storage system and a heat energy utilization system. The heat energy recovery and storage system collects and stores the heat from the main engine, auxiliary boiler steam, incinerator heat, and other heat sources in a hot water storage tank. The heat energy utilization system includes a heat pump unit and a heat exchanger. The heat pump unit improves the quality of waste heat, and the heat exchanger delivers the heat energy to the air conditioning and hot water systems to achieve heat energy recycling.

2. The ship ecological cycle system according to claim 1, characterized in that: The precise temperature-controlled refrigeration system is used to store food such as shore-based port supply vegetables and fresh vegetables produced by the vegetable planting system.

3. The ship ecological cycle system according to claim 1, characterized in that: The vegetable cultivation system includes vegetable cultivation racks, LED light strips for plant growth, a constant temperature and humidity air conditioning system, an aeroponic system, and a centralized control system. The LED light strips for plant growth, the constant temperature and humidity air conditioning system, and the aeroponic system are electrically connected to the centralized control system to ensure a continuous supply of vegetables. The vegetable cultivation racks are mobile, multi-layered, three-dimensional cultivation racks, with the number of groups and layers configured according to the cabin conditions. The LED light strips for plant growth use LEDs as light sources to provide illumination for the plants, and the light intensity and wavelength are adjusted according to the needs of different plant growth.

4. The ship ecological cycle system according to claim 3, characterized in that: The constant temperature and humidity air conditioning system includes a combined constant temperature and humidity air conditioning unit, a distributor, supply and return air ducts, and electric heating tubes, which are used to maintain the temperature and humidity in the plant factory within the set value and allowable fluctuation range, and to regulate the air composition through carbon dioxide airbags and external fresh air exhaust fans.

5. The ship ecological cycle system according to claim 3, characterized in that: The aeroponic system includes a nutrient solution tank, a nutrient solution tank pump, a freshwater supply pump, a spraying device, and a controller. The nutrient solution tank pump, the freshwater supply pump, and the spraying device are electrically connected to the controller. The nutrient solution in the nutrient solution tank is pumped by the nutrient solution pump and atomized into a mist through the atomizing nozzle to supply the plant roots. The remaining nutrient solution is filtered through the return pipe and then returned to the nutrient solution tank, realizing the recycling of the nutrient solution.

6. The ship ecological cycle system according to claim 3, characterized in that: The centralized control system includes a temperature and humidity sensor, a CO2 concentration sensor, a water supply pressure sensor, a light intensity sensor, and a control cabinet. The temperature and humidity sensor, CO2 concentration sensor, water supply pressure sensor, and light intensity sensor are electrically connected to the control cabinet to realize automatic monitoring and automatic control of the vegetable planting system.

7. The ship ecological cycle system according to claim 1, characterized in that: The CO2 capture unit includes a CO2 absorption and desorption module and a CO2 compression and liquefaction module. It uses a pure amine solution as an absorbent to transfer CO2 from the gas phase to the liquid phase. The CO2 is released from the absorbent by heating with waste heat from the main unit or auxiliary boiler through the energy management module, thereby regenerating the absorbent. The released CO2 is compressed, cooled, liquefied and stored. The CO2 utilization unit is used to transport a portion of the captured CO2 to the vegetable planting system to supply the plants with photosynthesis and promote plant production, while the excess CO2 is sealed.

8. The ship ecological cycle system according to claim 1, characterized in that: The energy management system is used to intelligently regulate the energy consumption of each module, prioritize the use of renewable energy, complement multiple types of energy, and adopt a cascade utilization method for recovered heat to improve reuse efficiency. It also performs denitrification treatment on the ship's exhaust gas, including main engine combustion exhaust gas and incinerator exhaust gas, according to the ship's main engine operating conditions, and then recovers waste heat. The renewable energy utilization system includes shipboard solar panels, small wind turbines, and battery energy storage systems, with the shipboard solar panels, small wind turbines, and battery energy storage systems electrically connected.

9. The ship ecological cycle system according to claim 1, characterized in that: The heat energy in the temperature control of the vegetable planting system in the production module comes from the recovery and storage of waste heat from the main equipment by the energy integrated management module, realizing the reuse of heat energy; the CO2 in the gas regulation control of the vegetable planting system comes from the CO2 captured in the ship exhaust gas by the carbon capture module, realizing the reuse of CO2; the nutrient solution in the aeroponic system of the vegetable planting system comes from the water reuse component in the sewage treatment equipment of the waste treatment and reuse module, realizing the reuse of water resources and nitrogen and phosphorus elements.

10. The ship ecological cycle system according to claim 1, characterized in that: The waste heat of the energy integrated management module comes from the main unit's electrical energy, auxiliary boiler steam, heat generated by biogas combustion from anaerobic fermentation of waste in the waste treatment and reuse module, and combustion heat energy from the incinerator. It is then transported to the compartments where equipment such as the production module and waste treatment and reuse module are located through heat exchange equipment and air conditioning system for temperature control of the corresponding compartment environment and water body, so as to realize the recycling of energy.

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