A method, device, computer equipment and readable storage medium for evaluating the water-receiving capacity of ships in coastal ports

Abstract

The present invention discloses a method, device, computer equipment and readable storage medium for evaluating the waterborne receiving capacity of ships in coastal ports. The method comprises the following steps: firstly calculating the amount of pollutants generated based on relevant data of the target port; then calculating the maximum receiving capacity of ships' waste based on data such as the relevant time and amount of waste received by ships in the port; and finally estimating the matching degree between the amount of pollutants generated and the maximum receiving capacity to obtain the construction target of ships' water pollutant receiving facilities, thereby providing a scientific basis for environmental protection and facility deployment in ports.

Description

Technical Field

[0001] The present invention relates to the field of port ship water pollution control, and in particular to a method, device, computer equipment and readable storage medium for evaluating the water receiving capacity of coastal port ships for water pollutants. Background Art

[0002] With the development of the maritime industry and the increasing number of ships, the environmental impact of water pollutants generated by them is increasing. Ports must have the necessary capacity to receive and dispose of these pollutants. However, insufficient research and limited assessment methods are currently available on the hardware required to receive and dispose of water pollutants from ships. This leads to unclear requirements for port terminal reception facilities, impacting both environmental protection and port operations. Summary of the Invention

[0003] The object of the present invention is to provide a method, device, computer equipment and readable storage medium for evaluating the water-borne receiving capacity of ships in coastal ports.

[0004] In a first aspect, an embodiment of the present invention provides a method for evaluating the waterborne receiving capacity of ships in coastal ports for water pollutants, comprising:

[0005] The amount of pollutants generated is calculated based on the recommended average pollutant levels at the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput;

[0006] The maximum receiving capacity of ship waste is calculated based on the average daily receiving volume of ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time:

[0007] The matching degree of the mobile water receiving facilities is estimated based on the amount of pollutants generated and the maximum receiving capacity of the ship waste, so as to obtain the construction target of the ship water pollutant receiving facilities at the target port.

[0008] In one possible implementation, the pollutant generation amount is calculated based on the recommended average pollutant amount of the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput, including:

[0009] According to the formula: T i =(f N W N N+f T W T T+f G W G ·G)α is calculated to obtain the amount of pollutants produced; wherein, T i is the amount of pollutants of type i, i is the pollutants of type i, f is the weight coefficient, W N is the recommended value of the average amount of pollutants generated by each ship, WT is the recommended value of the average amount of pollutants generated by ships per 10,000 gross tons, W G is the recommended value of the average amount of pollutants generated per 10,000 tons of cargo throughput, N is the total number of ships entering the port per year, T is the total tonnage of ships entering and leaving the port per year, G is the annual port cargo throughput, and α is the correction factor.

[0010] In one possible implementation, the maximum receiving capacity of ship waste is calculated based on the average daily receiving volume of ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time, including:

[0011] Calculate the maximum receiving capacity for ship garbage and ship sewage based on the average daily receiving volume of waste from ships at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time;

[0012] The maximum receiving capacity of ship waste is determined based on the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage.

[0013] In a possible implementation, the maximum receiving capacity for ship garbage and the maximum receiving capacity for ship domestic sewage are calculated based on the average daily receiving amount of waste from dirty ships at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time, including:

[0014] According to the formula: The maximum receiving capacity of ship garbage and ship domestic sewage is calculated as follows:

[0015] Among them, C i＝1，2 is the maximum receiving capacity of ship waste, i is the type of ship waste, i=1 represents ship garbage, i=2 represents ship domestic sewage, C i＝1，2 ' is the average daily amount of ship waste received, y is the daily dispatch ratio of ship waste receiving ships; a is the time it takes for the receiving ship to arrive at the port, b is the time it takes for the receiving ship to dock and leave the port, t is the receiving operation time, and x i is the probability of receiving ship garbage and ship domestic sewage at the same time.

[0016] In one possible implementation, the method further includes:

[0017] The maximum receiving capacity of ship waste is determined based on the maximum receiving capacity of ship garbage, the maximum receiving capacity of ship domestic sewage, and the maximum receiving capacity of ship oily sewage:

[0018] The maximum receiving capacity of ship oily wastewater is calculated by the formula: C = 330 × C' × z:

[0019] Where C is the maximum receiving capacity of ship oily wastewater, C′ is the average amount of ship waste received by a single ship per time, and z is the number of times the receiving ship receives waste per day.

[0020] In one possible implementation, estimating the matching degree of the mobile waterborne reception facilities based on the pollutant generation amount and the maximum receiving capacity of the ship waste to obtain the construction target of the ship water pollutant reception facilities at the target port includes:

[0021] Based on the maximum receiving capacity of ship waste, the actual receiving capacity of the water receiving ship is calculated as follows:

[0022] The difference between the actual receiving capacity of the water receiving vessel and the amount of pollutants generated is used as the matching degree estimation result:

[0023] Based on the matching degree estimation result, the construction target of the ship water pollutant receiving facility of the target port is determined.

[0024] In a possible implementation, calculating the actual receiving capacity of the water receiving vessel based on the maximum receiving capacity of the ship waste includes:

[0025] By formula: The actual receiving capacity of the water receiving ship is calculated as follows:

[0026] Among them, C0 is the maximum receiving capacity of ship waste, C L It is the actual receiving capacity of the receiving ship on the water after sailing a distance L, where L is the sailing distance and V is the sailing speed.

[0027] In a second aspect, an embodiment of the present invention provides a device for evaluating the water pollutant receiving capacity of ships in coastal ports, comprising:

[0028] The acquisition module is used to calculate the pollutant generation amount based on the target port's recommended average pollutant amount, the annual total number of ships entering the port, the annual total tonnage of ships entering and leaving the port, and the annual port cargo throughput; and calculate the maximum receiving capacity of ship waste based on the target port's average daily receiving amount of polluted ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time:

[0029] An evaluation module is used to estimate the matching degree of mobile water receiving facilities based on the amount of pollutants generated and the maximum receiving capacity of ship waste, and obtain the construction target of the ship water pollutant receiving facilities at the target port.

[0030] In a third aspect, an embodiment of the present invention provides a computer device, comprising a processor and a non-volatile memory storing computer instructions. When the computer instructions are executed by the processor, the computer device executes the method described in at least one possible implementation of the first aspect.

[0031] In a fourth aspect, an embodiment of the present invention provides a readable storage medium, wherein the readable storage medium includes a computer program, and when the computer program is running, the computer device where the readable storage medium is located is controlled to execute the method described in at least one possible implementation method of the first aspect.

[0032] Compared with the existing technology, the beneficial effects provided by the present invention include: using the method, device, computer equipment and readable storage medium disclosed in the present invention to evaluate the water-based receiving capacity of coastal ports for ship water pollutants, firstly calculating the amount of pollutants generated based on relevant data of the target port, then calculating the maximum receiving capacity of ship waste based on data such as the relevant time and amount of waste received by the port, and finally estimating the matching degree between the amount of pollutants generated and the maximum receiving capacity to obtain the construction target of ship water pollutant receiving facilities, thereby providing a scientific basis for environmental protection and facility deployment in ports. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly describes the drawings required for use in the embodiments. It should be understood that the following drawings illustrate only certain embodiments of the present invention and should not be construed as limiting the scope of the present invention. Those skilled in the art can, without inventive effort, derive other relevant drawings from these drawings.

[0034] Figure 1 A schematic flow chart of the steps of the method for evaluating the waterborne receiving capacity of coastal ports for water pollutants provided by an embodiment of the present invention:

[0035] Figure 2 A schematic diagram of an on-water receiving facility for ship water pollutants provided in an embodiment of the present invention;

[0036] Figure 3 A schematic block diagram of the structure of a device for evaluating the water pollutant receiving capacity of ships in coastal ports provided by an embodiment of the present invention;

[0037] Figure 4 A schematic block diagram of the structure of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0039] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In order to solve the technical problems in the above background technology, Figure 1 This is a flow chart of a method for evaluating the waterborne receiving capacity of ships in coastal ports according to an embodiment of the present disclosure. The method for evaluating the waterborne receiving capacity of ships in coastal ports according to an embodiment of the present disclosure is introduced in detail below.

[0041] Step S201: Calculate the pollutant generation amount based on the target port's recommended average pollutant amount, the annual total number of ships entering the port, the annual total tonnage of ships entering and leaving the port, and the annual port cargo throughput;

[0042] Step S202: Calculate the maximum receiving capacity of ship waste based on the average daily receiving volume of ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time:

[0043] Step S203 , estimating the matching degree of mobile water receiving facilities based on the pollutant generation amount and the maximum receiving capacity of the ship waste, and obtaining a construction target for the ship water pollutant receiving facilities at the target port.

[0044] In the embodiment of the present invention, illustratively:

[0045] 1. Calculating the amount of pollutants generated

[0046] Assume that a coastal port A is selected as the target port for evaluation.

[0047] First, get the relevant data of the port:

[0048] Recommended average pollutant amounts: According to regulations, the recommended average pollutant amount generated by each ship for oily wastewater (WN) is 5.60 tons / ship, the recommended average pollutant amount generated by every 10,000 gross tons of ships (WT) is 6.60 tons / 10,000 tons, and the recommended average pollutant amount generated per 10,000 tons of cargo throughput (WG) is 5.70 tons / 10,000 tons; the weight coefficients (fN) are 0.31, (fT) is 0.37, and (fG) is 0.32: the correction coefficient (α) is 0.90.

[0049] Total number of ships entering the port in a year (N): According to statistics, the total number of ships entering Port A in a year is 5,000.

[0050] Annual gross tonnage of ships entering and leaving the port (T): According to the port's records, the annual gross tonnage of ships entering and leaving the port is 80 million tons.

[0051] Annual port cargo throughput (G): Data shows that the annual port cargo throughput is 120 million tons.

[0052] Next, the server calculates the value of the formula T i =(f N W N N+f T W T T+f G W G ·G)αCalculate the amount of pollutants generated.

[0053] For ship oily wastewater (i=1):

[0054] f N W N N = 0.31 × 5.60 × 5000 = 8960 (tons)

[0055] f T W T T = 0.37 × 6.60 × 8000 = 20256 (tons)

[0056] f G W G G = 0.32 × 5.70 × 12000 = 22560 (tons)

[0057] T i =(8960+20256+22560)×0.90=51724×0.90=46551.6 (tons)

[0058] Through the above calculations, it can be concluded that the amount of oily wastewater generated by ships in Port A in one year is approximately 46,551.6 tons.

[0059] 2. Calculation of the Maximum Acceptance Capacity of Ship Waste

[0060] Let’s take Port A as an example.

[0061] 1. Calculate the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage.

[0062] The average daily volume of ship waste received is 80m 3 / d, the average daily sewage intake of ships is 150m 3 / d.

[0063] The daily dispatch ratio of ship waste receiving ships is 5 / 8, and the daily dispatch ratio of ship domestic sewage receiving ships is 3 / 8.

[0064] The time it takes for a receiving vessel to arrive at the port (a) is 1 hour on average.

[0065] The berthing and unberthing time of receiving vessels (b) is 0.5 hours on average.

[0066] Receiving operation time (t): average 1 hour.

[0067] The probability of receiving ship garbage and ship sewage at the same time (x): 20% for ship garbage and 0 for ship sewage.

[0068] For ship garbage (i=1)=700(m 3 )

[0069] For ship sewage (i=2)=984.375(m 3 )

[0070] 2. Calculate the maximum receiving capacity of the ship for oily wastewater.

[0071] Assuming that the average amount of ship waste received by a single ship is 200m 3 , the receiving ship receives 3 times a day (z), 200×3=600(m 3 )

[0072] Based on the above calculation results, the maximum receiving capacity of ship waste is determined to be the sum of the maximum receiving capacities of ship garbage, ship domestic sewage and ship oily sewage, that is, 700+984.375+600=2284.375 cubic meters.

[0073] 3. Estimating the matching degree of mobile receiving facilities on water

[0074] Let’s continue with Port A as an example.

[0075] 1. Calculate the actual receiving capacity of the receiving vessel on the water

[0076] Assume that the sailing distance (L) of the receiving vessel is 50 nautical miles and the sailing speed (V) is 20 knots.

[0077] First, convert the sailing distance into the time required for knots: 50÷20=2.5 (hours),

[0078] 2. Calculate the matching degree estimation results

[0079] Assuming that the amount of pollutants generated is 10,000 tons, the maximum receiving capacity of ship waste is converted into a corresponding amount of pollutants of 8,000 tons.

[0080] Matching degree estimation result = 100008000 = 2000 (tons)

[0081] 3. Determine the construction targets of ship water pollutant reception facilities

[0082] According to the above matching degree estimation results, due to the difference of 2,000 tons, it shows that the current capacity of ship water pollutant receiving facilities in Port A is insufficient and needs further construction and improvement.

[0083] The construction goals include increasing the number of receiving ships, improving the operational efficiency of receiving ships, optimizing the receiving process to reduce time consumption, etc., so that the receiving capacity of ship water pollutants can meet the actual generation of the port, ensuring that the port's water environment is effectively protected.

[0084] Through the above detailed scenario examples for each step, we can more clearly understand the specific calculation and analysis process of the assessment method of the waterborne reception capacity of ships in coastal ports in actual application, and provide a scientific basis and decision-making support for the environmental protection and sustainable development of ports.

[0085] In the embodiment of the present invention, the amount of pollutants generated is calculated based on the recommended average amount of pollutants at the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput, including:

[0086] According to the formula: T i =(f N W N N+f T W T T+f G W G G) α calculates the amount of pollutants produced;

[0087] Among them, T i is the amount of pollutants of type i, i is the pollutants of type i, f is the weight coefficient, W N is the recommended value of the average amount of pollutants generated by each ship, W T is the recommended value of the average amount of pollutants generated by ships per 10,000 gross tons, W G is the recommended value of the average amount of pollutants generated per 10,000 tons of cargo throughput, N is the total number of ships entering the port per year, T is the total tonnage of ships entering and leaving the port per year, G is the annual port cargo throughput, and α is the correction factor.

[0088] In the embodiment of the present invention, for example, it is assumed that a specific coastal port B is selected for evaluation.

[0089] First, the server retrieves relevant data from Port B's database. For the recommended average pollutant values, by querying authoritative standards and actual monitoring data, the following information is obtained:

[0090] For ship oily wastewater (i=1), the recommended average amount of pollutants generated by each ship (W N ) is 5.60 tons / ship, and the recommended value of the average amount of pollutants generated by ships with a gross tonnage of 10,000 tons (W T ) is 6.60 tons / 10,000 tons, and the recommended value of the average amount of pollutants generated per 10,000 tons of cargo throughput (W G ) is 5.70 tons / 10,000 tons. The weight coefficients (f) are: f N 0.31, f T is 0.37, f G is 0.32, and the correction coefficient (α) is 0.90.

[0091] The server then obtains the operating data of Port B for the year:

[0092] The total number of ship calls (N) in a year is 6,000. This means that in the past year, a total of 6,000 ships entered the port.

[0093] The total tonnage of ships entering and leaving the port annually reached 100 million tons, reflecting the scale of the port in handling large ships and cargo transportation.

[0094] The annual port cargo throughput (G) is 150 million tons, reflecting the port's cargo transportation activity and economic contribution.

[0095] Next, the server follows the formula T i =(f N W N N+f T W T T+f G W G ·G)α is calculated.

[0096] For ship oily wastewater (i=1):

[0097] f N W N N = 0.31 × 5.60 × 6000 = 10296 (tons)

[0098] f T W T T = 0.37 × 6.60 × 10000 = 24420 (tons)

[0099] f G W GG = 0.32 × 5.70 × 15000 = 27360 (tons)

[0100] T i =(10296+24420+27360)×0.90=62076×0.90=55868.4 (tons)

[0101] Through precise calculations by the server, it was found that the amount of oily wastewater generated by ships in Port B in one year was approximately 55,868.4 tons.

[0102] Through such detailed data acquisition and precise calculations, the server can accurately assess the amount of various pollutants generated by Port B, providing an important data basis for subsequent receiving capacity assessment and facility construction target setting.

[0103] In an embodiment of the present invention, the maximum receiving capacity of ship waste is calculated based on the average daily receiving amount of sewage ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time of the target port, which can be implemented through the following example.

[0104] Based on the average daily volume of waste from ships received at the target port, the arrival time of ships, the berthing and departure time, and the reception operation time, the maximum reception capacity for ship garbage and ship sewage is calculated:

[0105] The maximum receiving capacity of ship waste is determined based on the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage.

[0106] In the embodiment of the present invention, for example, it is assumed that a coastal port C is taken as the evaluation object.

[0107] The server first obtains the following basic data from the relevant database and monitoring system of Port C:

[0108] The average daily volume of ship waste received is 100m 3 / d, the average daily sewage intake of ships is 200m 3 / d.

[0109] Regarding arrival times, the server recorded an average arrival time (a) of 2 hours for a receiving vessel. The average berthing and unberthing time (b) was 1 hour. The average receiving operation time (t) was 1.5 hours. Regarding the probability of receiving both ship garbage and domestic sewage simultaneously, the probability was 25% for ship garbage and 0% for domestic sewage.

[0110] Next, the server calculates the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage according to the formula.

[0111] For ship garbage (i=1)=726.5625(m 3 )

[0112] For ship sewage (i = 2) = 1162.5 (m 3 )

[0113] The server calculated that the maximum receiving capacity of ship garbage is about 726.5625m 3 The maximum receiving capacity of domestic sewage of ships is about 1162.5m 3 .

[0114] Then, the server determines the maximum receiving capacity of ship waste based on the above calculation results. In this scenario, only ship garbage and ship sewage are considered. The maximum receiving capacity of ship waste is the sum of the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship sewage, that is, 726.5625+1162.5=1889.0625m 3 .

[0115] If we further consider the receiving situation of ship oily waste, assuming that the average receiving volume of ship waste per ship is 300m 3 , the receiving ship receives 4 times a day (z).

[0116] The maximum receiving capacity of ship oily wastewater is: 300×4=1200(m 3 )

[0117] At this time, the maximum receiving capacity of ship waste is the sum of the maximum receiving capacity of ship garbage, ship domestic sewage and ship oily sewage, that is, 1889.0625+1200=3089.0625m 3 .

[0118] Through the precise processing and calculation of these data by the server, the maximum ship waste reception capacity of Port C can be accurately determined, providing key data support for the subsequent assessment of whether the port's ship water pollutant reception facilities meet the needs.

[0119] In an embodiment of the present invention, the maximum receiving capacity for ship garbage and the maximum receiving capacity for ship domestic sewage are calculated based on the average daily receiving amount of sewage ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time of the target port, which can be implemented through the following examples.

[0120] According to the formula: The maximum receiving capacity of ship garbage and ship domestic sewage is calculated as follows:

[0121] Among them, C i＝1,2is the maximum receiving capacity of ship waste, i is the type of ship waste, 1 represents ship garbage, 2 represents ship domestic sewage, C i＝1,2 ' is the average daily amount of ship waste received, y is the daily dispatch ratio of ship waste receiving ships, a is the time it takes for the receiving ship to arrive at the port, b is the time it takes for the receiving ship to dock or leave the port, t is the receiving operation time, x is the time it takes for the receiving ship to arrive at the port, and i is the probability of receiving ship garbage and ship domestic sewage at the same time.

[0122] In the embodiment of the present invention, for example, take the coastal port D as an example. The server obtains the following accurate data from the management system of port D: For ship garbage, the average daily receiving volume of ship waste is 120m 3 / d. The daily dispatch rate of ship waste receiving vessels, y, is set to 5 / 8 for ship waste. The average arrival time a for a receiving vessel is 1.5 hours, the average berthing and unberthing time b for a receiving vessel is 0.8 hours, and the average receiving operation time t is 1.2 hours. The probability of receiving ship waste and domestic sewage simultaneously is set to 30% for ship waste.

[0123] The server starts to calculate the maximum receiving capacity of ship garbage according to the formula = 858.75 (m 3 )

[0124] For ship sewage, the average daily volume of ship waste received is 180m 3 / d. The daily dispatch rate of ship waste receiving vessels, y, is 3 / 8 for ship sewage. The average time a for a receiving vessel to arrive at a port is 1.8 hours, the average time b for a receiving vessel to dock and leave is 0.6 hours, and the average receiving operation time t is 1 hour. The probability of receiving ship waste and ship sewage at the same time is 0 for ship sewage. The server again uses the formula to calculate the maximum receiving capacity of ship sewage = 1120.5 (m 3 ) The server has calculated rigorously that the maximum receiving capacity of ship garbage at Port D is approximately 858.75m 3 The maximum receiving capacity of domestic sewage on board a ship is about 1120.5m 3 .

[0125] These calculations provide critical data for further evaluating Port D's waste reception capacity. For example, the server can compare this data with the port's pollutant generation to determine whether the port's waste reception facilities meet actual needs. If capacity is insufficient, the server generates reports and recommendations, supporting decision-making by port management. These recommendations can help increase the port's waste reception capacity, optimize reception processes, or adjust operational arrangements, thereby protecting the marine environment.

[0126] Through such precise and detailed calculation process, the server can provide strong technical support and data guarantee for the port's environmental protection and sustainable development.

[0127] In the embodiments of the present invention, the following implementation modes are also provided.

[0128] Determining the maximum receiving capacity of ship waste according to the maximum receiving capacity of ship garbage, the maximum receiving capacity of ship domestic sewage, and the maximum receiving capacity of ship oily sewage;

[0129] The maximum receiving capacity of ship oily wastewater is calculated by the formula: C = 330 × C' × z:

[0130] Where C is the maximum receiving capacity of ship oily wastewater, C′ is the average amount of ship waste received by a single ship per time, and z is the number of times the receiving ship receives waste per day.

[0131] In the embodiment of the present invention, for example, the coastal port E is taken as the evaluation object.

[0132] The server first obtains the relevant data of ship garbage and ship sewage from the relevant system of Port E. After calculation, it is found that the maximum receiving capacity of ship garbage is 800m 3 The maximum receiving capacity of domestic sewage of ships is 1200m 3 .

[0133] Next, the server obtains the relevant parameters of ship oily wastewater. Assuming that the average amount of ship waste received by a single ship is 400m 3 , the receiving ship receives 5 times a day (z).

[0134] The server calculates the maximum receiving capacity of ship oily wastewater according to the formula: =400×5=2000(m 3 )

[0135] The server calculated that the maximum receiving capacity of ship oily wastewater is 2000m 3 .

[0136] The server then determines the maximum capacity for receiving ship waste. In this case, port E's maximum capacity is equal to the sum of the maximum capacity for receiving ship garbage, the maximum capacity for receiving ship domestic sewage, and the maximum capacity for receiving ship oily waste.

[0137] That is, the maximum receiving capacity of ship waste = 800 + 1200 + 2000 = 4000m 3

[0138] Through such precise calculations, the server determined the maximum overall waste collection capacity of Port E. This data is crucial for assessing whether Port E's waste collection facilities can meet actual demand.

[0139] For example, if the estimated amount of water pollutants generated by ships at Port E exceeds 4000m 3 , the server will issue a prompt, indicating that the current receiving capacity may be insufficient and measures need to be taken to increase receiving facilities or improve receiving efficiency.

[0140] For example, if after a period of operation, the business volume of Port E increases, resulting in a significant change in the amount of ship waste generated, the server can recalculate the above and provide the port management department with an updated receiving capacity assessment in a timely manner so that corresponding adjustments and plans can be made.

[0141] In short, the server provides reliable data support and decision-making basis for the reception management of ship water pollutants at Port E by accurately calculating and comprehensively analyzing the maximum reception capacity of ship garbage, ship domestic sewage and ship oily sewage.

[0142] In an embodiment of the present invention, the matching degree of the mobile water receiving facility is estimated based on the pollutant generation amount and the maximum receiving capacity of the ship waste to obtain the construction target of the ship water pollutant receiving facility at the target port, which can be implemented through the following examples.

[0143] Calculate the actual receiving capacity of the water receiving vessel based on the maximum receiving capacity of the ship waste;

[0144] The difference between the actual receiving capacity of the water receiving vessel and the amount of pollutants generated is used as a matching degree estimation result;

[0145] Based on the matching degree estimation result, the construction target of the ship water pollutant receiving facility of the target port is determined.

[0146] In the embodiment of the present invention, for example, a coastal port F is taken as an example. The server has first calculated the pollutant generation amount of the port F and the maximum receiving capacity of ship waste.

[0147] Assume that the maximum receiving capacity of ship waste is 5,000 cubic meters.

[0148] The server calculates the actual receiving capacity of the water receiving vessel based on this maximum receiving capacity. Assume that the initial receiving capacity of the water receiving vessel is 4,000 cubic meters, the sailing speed is 15 knots, and the sailing distance is 80 nautical miles.

[0149] The server first converts the sailing distance into the required time: 80÷15≈5.33 hours.

[0150] Then calculate the actual receiving capacity of the water receiving ship according to the formula = 4000×(1-0.2665)=4000×0.7335=2934 (cubic meters).

[0151] Next, the server obtains the previously calculated amount of pollutant generation, assuming it is 3,500 cubic meters.

[0152] The server calculates the difference between the actual receiving capacity of the water receiving vessel and the amount of pollutants generated as the matching degree estimation result: 2934-3500=-566 cubic meters.

[0153] This negative matching degree estimation result shows that the current port F’s capacity to receive ship water pollutants is insufficient.

[0154] Based on this match estimation result, the server determines the construction target of the ship water pollutant reception facility at Port F. Possible construction targets include adding new water-based reception vessels, improving the operating efficiency of existing reception vessels, shortening the voyage time of reception vessels, or increasing the single-trip reception volume of reception vessels.

[0155] For example, if it is decided to add new water receiving ships, the server will further calculate the number and specifications of the new receiving ships required to ensure that the capacity gap of 566 cubic meters can be made up.

[0156] Alternatively, if it is decided to improve the operating efficiency of existing receiving vessels, the server will analyze possible improvement measures, such as optimizing the receiving process, strengthening crew training, etc., and estimate the improvement in receiving capacity that these measures can bring.

[0157] Through such comprehensive and precise calculations and analysis, the server formulated scientific and reasonable goals for the construction of ship water pollutant reception facilities for Port F, providing strong support for the port's environmental protection and sustainable development.

[0158] In the embodiment of the present invention, the actual receiving capacity of the water receiving vessel is calculated based on the maximum receiving capacity of the ship waste, which can be implemented through the following example.

[0159] By formula: Calculating the actual receiving capacity of the water receiving vessel;

[0160] Among them, C0 is the maximum receiving capacity of ship waste, C L It is the actual receiving capacity of the receiving ship on the water after sailing a distance L, where L is the sailing distance and V is the sailing speed.

[0161] In the embodiment of the present invention, for example, a coastal port G is taken as an example. The server has obtained that the maximum receiving capacity of ship waste of the port is 6,000 cubic meters.

[0162] Now we need to calculate the actual receiving capacity of the receiving vessel. Assume that the receiving vessel has a speed of 25 knots and a range of 100 nautical miles.

[0163] The server first converts the sailing distance into the time required in knots. Since 1 nautical mile is approximately 1.852 kilometers, 100 nautical miles is approximately 185.2 kilometers. And since 1 knot is 1.852 kilometers per hour, a sailing speed of 25 knots is converted to kilometers per hour as 25 x 1.852 = 46.3 kilometers per hour.

[0164] The sailing time is 185.2÷46.3≈4 hours.

[0165] The server calculates the actual receiving capacity of the water receiving ship according to the formula = 6000×(1-0.2)=6000×0.8=4800 (cubic meters).

[0166] Through the above calculations, the server concluded that the actual receiving capacity of the water receiving ship after sailing 100 nautical miles is 4,800 cubic meters.

[0167] Through such rigorous and precise calculations, the server can provide accurate data on the actual receiving capacity of water receiving vessels for different coastal ports, providing strong support for subsequent evaluation and decision-making.

[0168] In order to more clearly describe the solution implemented in this application, a more complete implementation method is provided below.

[0169] (1) Calculation of pollutant generation

[0170] Based on the formula: T i =(f N W N N+f T W T T+f G W G ·G)α.

[0171] Where: T i is the amount of pollutants of category i produced, in tons / year;

[0172] i is the i-th type of pollutant, ranging from 1 to 5, representing ship oily wastewater, bulk liquid chemical wastewater, engine room residual oil wastewater, ship garbage and ship domestic sewage respectively;

[0173] f is the weight coefficient, where ∑f i =1, parameter values ​​see Table 1:

[0174] W N The recommended average amount of pollutants generated by each ship is in tons per ship. The parameter values ​​are shown in Table 1:

[0175] W T Recommended values ​​for the average amount of pollutants generated by ships per 10,000 gross tons, in tons per 10,000 tons. Parameter values ​​are shown in Table 1.

[0176] W G The recommended average amount of pollutants generated per 10,000 tons of cargo throughput, in tons per 10,000 tons. The parameter values ​​are shown in Table 1.

[0177] N is the total number of ships entering the port in a year, with the unit being ships per year;

[0178] T is the total tonnage of ships entering and leaving the port annually, in ten thousand tons per year;

[0179] G is the annual port cargo throughput, in ten thousand tons per year;

[0180] α is the correction coefficient, and the parameter values ​​are shown in Table 1 below.

[0181] Table 1

[0182]

[0183]

[0184] (2) Receiving capacity calculation

[0185] Based on a large number of on-site surveys of water pollutant reception from ships in coastal ports, the present invention found that there is a possibility of simultaneous reception of ship garbage and ship domestic sewage in the current water pollutant reception at coastal ports. According to actual statistical data on the reception of water pollutants from ships in ports, the ratio of the number of times ship garbage and ship domestic sewage are received is x.

[0186] Assuming the pollutant receiving vessel is on call 24 hours a day, with a working time of 20 hours per day and 330 days a year, the following factors are considered: the arrival time a of the receiving vessel, the berthing and departure time b, and the receiving operation time t.

[0187] (1) The calculation method of the maximum receiving capacity of ship garbage and domestic sewage is summarized as follows:

[0188]

[0189] in,

[0190] C i＝1，2 is the maximum receiving capacity of ship waste, m3, i is the type of ship waste, 1 represents ship garbage, 2 represents ship domestic sewage;

[0191] C i＝1,2 ' is the average daily amount of ship waste received, m3 / d;

[0192] y is the daily dispatch ratio of ship waste receiving vessels, when i = 1, it takes the value of 5 / 8, when i = 2, it takes the value of 3 / 8;

[0193] a is the time it takes for the receiving ship to arrive at the port, h, b is the time it takes for the receiving ship to berth or leave the port, h, and t is the receiving operation time, h;

[0194] x is the probability of receiving ship garbage and ship domestic sewage at the same time. When i = 1, x is 20%; when i = 2, x is 0.

[0195] (2) Oily wastewater is received by special vessels. The oily wastewater is received on a full load basis each time. The number of times it is received per day (according to existing regulations, it is generally 3-4 times) is as follows:

[0196] C=330×C'×z

[0197] C is the maximum receiving capacity of ship oily wastewater, m3;

[0198] C′ is the average amount of ship waste received per ship per time, m3;

[0199] z is the number of times the receiving ship receives goods every day.

[0200] (3) Matching evaluation

[0201] For mobile water receiving facilities, pollutant receiving operations can be carried out at different port terminals or anchorage waters. Considering the limitation of operation time, the capacity of mobile water receiving facilities gradually decays with distance (time).

[0202] Assuming that pollutant reception needs to be completed within the same day (20 hours) after the ship arrives at the port, the capacity of the mobile water reception facility decays with distance, as shown in the following formula.

[0203]

[0204] Where: C0 is the receiving capacity of the water receiving ship (at the initial docking time), CL is the actual receiving capacity of the water receiving ship after sailing a distance L, L is the sailing distance, and V is the sailing speed.

[0205] Define the current ship water pollutant receiving capacity of the port as C, and subtract the ship water pollutant receiving demand D from the current receiving capacity C of the receiving facilities to obtain the ship water pollutant receiving facility construction target M.

[0206] (4) Methods for equipping waterborne receiving facilities for ship water pollutants

[0207] According to the demand for receiving water pollutants from ships in spatial waters, on the basis of existing receiving facilities, and taking into account factors such as receiving demand, receiving time, and construction investment, a method for equipping ship water pollutant receiving facilities is proposed.

[0208] Please refer to Figure 2 The waters under the jurisdiction of the port are divided into port areas dominated by container ships, port areas dominated by general cargo ships, port areas dominated by bulk carriers, and port areas dominated by passenger ships. Taking an operating area as a unit, the center point of the spatial position of the dock shoreline is the center of the circle, and the radius is calculated based on the ship's speed of 10 knots, with a limit of 24 hours for arriving at the port. The sea area for ships waiting to enter the port is circled. Based on the statistical data of ship inflow and outflow (ship number, tonnage, type, etc.) in the automatic identification system (AIS) of the area over a certain period of time (annual, monthly average, etc.), and with the limit of all ships that need to be received, the upper limit demand D of ship water pollutants that the area needs to receive is calculated based on the empirical formula and AIS statistical data.

[0209] Taking the entire port or port area as the construction scope, the construction target M of the ship water pollutant reception facility is calculated according to the calculation formula of the mobile water reception capacity set by the present invention, or the construction target M' is calculated based on the existing reception capacity C.

[0210] Please refer to Figure 3 , Figure 3 An embodiment of the present invention provides an evaluation device 110 for the water pollutant receiving capacity of ships in coastal ports, comprising:

[0211] The acquisition module 1101 is configured to calculate the pollutant generation amount based on the target port's recommended average pollutant amount, the annual total number of ships entering the port, the annual total tonnage of ships entering and leaving the port, and the annual port cargo throughput; and calculate the maximum receiving capacity of ship waste based on the target port's average daily receiving amount of polluted ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time;

[0212] The evaluation module 1102 is used to estimate the matching degree of the mobile water receiving facilities according to the pollutant generation amount and the maximum receiving capacity of the ship waste, and obtain the construction target of the ship water pollutant receiving facilities at the target port.

[0213] It should be noted that the implementation principles of the aforementioned device 110 for assessing the waterborne reception capacity of coastal port ships can be referenced to the implementation principles of the aforementioned method for assessing the waterborne reception capacity of coastal port ships, and will not be elaborated upon here. It should be understood that the division of the various modules of the aforementioned device is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into a single physical entity, or physically separated. Furthermore, these modules can be implemented entirely as software invoked by a processing element; entirely as hardware; or partially as software invoked by a processing element, while others can be implemented in hardware. For example, the device 110 for assessing the waterborne reception capacity of coastal port ships can be a separate processing element, or integrated into a chip of the aforementioned device. Furthermore, it can be stored in the form of program code in the memory of the aforementioned device, with a processing element of the aforementioned device invoking and executing the functions of the device 110 for assessing the waterborne reception capacity of coastal port ships. The implementation of the other modules is similar. Furthermore, these modules can be fully or partially integrated together, or implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each module above may be completed by an integrated logic circuit of hardware in a processor element or by instructions in the form of software.

[0214] For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), one or more microprocessors (digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code on a processing element, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system on a chip (SOC).

[0215] The embodiment of the present invention provides a computer device 100, which includes a processor and a non-volatile memory storing computer instructions. When the computer instructions are executed by the processor, the computer device 100 executes the aforementioned device 110 for evaluating the water pollutant receiving capacity of ships in coastal ports. Figure 4 As shown, Figure 4This is a block diagram of a computer device 100 according to an embodiment of the present invention. The computer device 100 includes an apparatus 110 for evaluating the water pollutant receiving capacity of ships in coastal ports, a memory 111 , a processor 112 , and a communication unit 113 .

[0216] In order to realize the transmission or interaction of data, the memory 111, the processor 112 and the communication unit 113 are electrically connected to each other directly or indirectly. For example, the electrical connection between these components can be realized through one or more communication buses or signal lines. The evaluation device 110 for the waterborne reception capacity of coastal port ships of water pollutants includes at least one software function module that can be stored in the memory 111 in the form of software or firmware or solidified in the operating system (OS) of the computer device 100. The processor 112 is used to execute the evaluation device 110 for the waterborne reception capacity of coastal port ships of water pollutants stored in the memory 111, such as the software function modules and computer programs included in the evaluation device 110 for the waterborne reception capacity of coastal port ships of water pollutants.

[0217] An embodiment of the present invention provides a readable storage medium, which includes a computer program. When the computer program is running, it controls the computer device where the readable storage medium is located to execute the aforementioned coastal port ship water pollutant receiving capacity assessment device 110.

[0218] For illustrative purposes, the foregoing description has been made with reference to specific embodiments. However, the above illustrative discussion is not intended to be exhaustive or to limit the present disclosure to the precise forms disclosed. Numerous modifications and variations are possible in light of the above teachings. These embodiments have been selected and described in order to best illustrate the principles of the present disclosure and its practical application, thereby enabling those skilled in the art to best utilize the present disclosure and to utilize various embodiments with various modifications as appropriate for the specific application contemplated.

Claims

1. A method for evaluating the waterborne receiving capacity of ships in coastal ports, characterized in that: include: The amount of pollutants generated is calculated based on the recommended average pollutant levels at the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput; Calculate the maximum receiving capacity of ship waste based on the average daily receiving volume of ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time; Estimating the matching degree of mobile water receiving facilities based on the amount of pollutants generated and the maximum receiving capacity of ship waste, and obtaining a construction target for ship water pollutant receiving facilities at the target port; The pollutant generation amount is calculated based on the recommended average pollutant amount of the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput, including: According to the formula: T i =(f N W N N+f T W T T+f G W G G) α calculates the amount of pollutants produced; Among them, T i is the amount of pollutants of type i, i is the pollutants of type i, f N is the weight coefficient of the total number of ships entering the port in a year, f T is the weight coefficient of the total tonnage of ships entering and leaving the port each year, f G is the weight coefficient of annual port cargo throughput, W N is the recommended value of the average amount of pollutants generated by each ship, W T is the recommended value of the average amount of pollutants generated by ships per 10,000 gross tons, W G is the recommended value of the average amount of pollutants generated per 10,000 tons of cargo throughput, N is the total number of ships entering the port each year, T is the total tonnage of ships entering and leaving the port each year, G is the annual port cargo throughput, and α is the correction factor; The maximum receiving capacity of ship waste is calculated based on the average daily receiving volume of ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time, including: Calculate the maximum receiving capacity for ship garbage and ship sewage based on the average daily receiving volume of waste from ships at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time; Determining the maximum receiving capacity of ship waste according to the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage; The maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage are calculated based on the average daily receiving amount of waste from dirty ships, the arrival time of ships, the berthing and departure time, and the receiving operation time of the target port, including: According to the formula: Calculate the maximum receiving capacity of ship garbage and ship domestic sewage; in, is the maximum receiving capacity of ship waste, i is the type of ship waste, 1 represents ship garbage, 2 represents ship domestic sewage, is the average daily amount of ship waste received, y is the daily dispatch ratio of ship waste receiving ships; a is the time it takes for the receiving ship to arrive at the port, b is the time it takes for the receiving ship to dock and leave the port, t is the receiving operation time, The probability of receiving ship garbage and ship sewage at the same time; The matching degree of the mobile water receiving facilities is estimated based on the pollutant generation amount and the maximum receiving capacity of the ship waste, and the construction target of the ship water pollutant receiving facilities at the target port is obtained, including: Calculate the actual receiving capacity of the water receiving vessel based on the maximum receiving capacity of the ship waste; The difference between the actual receiving capacity of the water receiving vessel and the amount of pollutants generated is used as a matching degree estimation result; Based on the matching degree estimation result, the construction target of the ship water pollutant receiving facility of the target port is determined.

2. The method according to claim 1, characterized in that The method further comprises: Determining the maximum receiving capacity of ship waste according to the maximum receiving capacity of ship garbage, the maximum receiving capacity of ship domestic sewage, and the maximum receiving capacity of ship oily sewage; The maximum receiving capacity of ship oily wastewater is calculated by the formula: Calculated; in, The maximum receiving capacity of ship oily wastewater, is the average amount of ship waste received by a single ship each time, and z is the number of times the receiving ship receives waste per day.

3. The method according to claim 1, characterized in that The actual receiving capacity of the water receiving vessel is calculated based on the maximum receiving capacity of the ship waste, including: By formula: Calculating the actual receiving capacity of the water receiving vessel; in, is the maximum receiving capacity of the ship waste, is the actual receiving capacity of the receiving ship after sailing distance L, is the sailing distance, For the sailing speed.

4. A device for evaluating the water pollutant receiving capacity of ships in coastal ports, characterized in that: include: An acquisition module is used to calculate the amount of pollutants generated based on the recommended average pollutant amount of the target port, the total number of ships entering the port annually, the total tonnage of ships entering and leaving the port annually, and the annual port cargo throughput; and to calculate the maximum receiving capacity of ship waste based on the average daily receiving amount of polluted ship waste at the target port, the time of ship arrival, the time of berthing and leaving, and the time of receiving operations; An evaluation module is used to estimate the matching degree of mobile water receiving facilities based on the amount of pollutants generated and the maximum receiving capacity of ship waste, and obtain a construction target for ship water pollutant receiving facilities at the target port; The acquisition module is specifically used to: According to the formula: T i =(f N W N N+f T W T T+f G W G ·G)α is calculated to obtain the amount of pollutants produced; wherein, T i is the amount of pollutants of type i, i is the pollutants of type i, f N is the weight coefficient of the total number of ships entering the port in a year, f T is the weight coefficient of the total tonnage of ships entering and leaving the port each year, f G is the weight coefficient of annual port cargo throughput, W N is the recommended value of the average amount of pollutants generated by each ship, W T is the recommended value of the average amount of pollutants generated by ships per 10,000 gross tons, W G is the recommended value of the average amount of pollutants generated per 10,000 tons of cargo throughput, N is the total number of ships entering the port each year, T is the total tonnage of ships entering and leaving the port each year, G is the annual port cargo throughput, and α is the correction factor; Calculate the maximum ship waste receiving capacity and the maximum ship sewage receiving capacity based on the average daily receiving volume of waste from dirty ships at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time; and determine the maximum ship waste receiving capacity based on the maximum ship waste receiving capacity and the maximum ship sewage receiving capacity; The acquisition module is further specifically configured to: According to the formula: The maximum receiving capacity of ship garbage and ship sewage is calculated; among them, is the maximum receiving capacity of ship waste, i is the type of ship waste, 1 represents ship garbage, 2 represents ship domestic sewage, is the average daily amount of ship waste received, y is the daily dispatch ratio of ship waste receiving ships; a is the time it takes for the receiving ship to arrive at the port, b is the time it takes for the receiving ship to dock and leave the port, t is the receiving operation time, The probability of receiving ship garbage and ship sewage at the same time; The evaluation module is specifically used to: Based on the maximum receiving capacity of the ship waste, the actual receiving capacity of the water receiving ship is calculated; the difference between the actual receiving capacity of the water receiving ship and the amount of pollutants generated is used as the matching degree estimation result; based on the matching degree estimation result, the construction target of the ship water pollutant receiving facility at the target port is determined.

5. A computer device, characterized in that: The computer device includes a processor and a non-volatile memory storing computer instructions. When the computer instructions are executed by the processor, the computer device executes the method according to any one of claims 1 to 3.

6. A readable storage medium, characterized in that: The readable storage medium includes a computer program, and when the computer program is executed, the computer device where the readable storage medium is located is controlled to execute the method according to any one of claims 1 to 3.

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