Assessment method and device for coastal port ship water pollutant overwater receiving capability, computer equipment and readable storage medium

Abstract

The invention discloses a coastal port ship water pollutant overwater receiving capability assessment method and device, computer equipment and a readable storage medium, and the method comprises the steps: calculating the pollutant generation amount according to the related data of a target port; the maximum receiving capacity of the ship waste is calculated according to data such as the related receiving time and the receiving amount of the ship waste of the port, and finally the matching degree is estimated according to the pollutant generation amount and the maximum receiving capacity, so that the construction target of the ship water pollutant receiving facility is obtained, and a scientific basis is provided for environmental protection and facility allocation of the port.

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 shipping industry, the number of ships has increased, and the impact of water pollutants they produce on the environment has gradually increased. Ports must have the corresponding pollutant reception and disposal capabilities, but the current research on the hardware capabilities for receiving and disposing of ship water pollutants is insufficient, and the evaluation methods are limited, resulting in unclear requirements for the configuration of port terminal reception facilities, which affects 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 pollutant receiving capacity of ships in coastal ports.

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

[0005] 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 each year, the total tonnage of ships entering and leaving the port each year, and the annual port cargo throughput;

[0006] According to 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, the maximum receiving capacity of waste from ships is calculated:

[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 a possible implementation, the amount of pollutant generated is calculated based on the recommended average value of pollutants at the target port, the total number of ships entering the port each year, the total tonnage of ships entering and leaving the port each year, and the annual cargo throughput of the port, 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 used to calculate 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 a possible implementation, the maximum receiving capacity of ship waste is calculated based on the average daily receiving amount of polluted ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time of the target port, including:

[0011] According to 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, the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage are calculated;

[0012] The maximum receiving capacity of ship waste is determined according to 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 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 at the target port, the time of ship arrival, the time of berthing and leaving, 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 for the receiving ship to arrive at the port, b is the time for the receiving ship to berth and leave the berth, t is the receiving operation time, x i It is the probability of receiving ship garbage and ship domestic sewage at the same time.

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

[0017] The maximum receiving capacity of ship waste is determined 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:

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

[0019] Among them, C is the maximum receiving capacity of ship oily wastewater, C′ 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 every day.

[0020] In a possible implementation, the estimating the matching degree of the mobile water receiving facility according to 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 of the target port includes:

[0021] According to the maximum receiving capacity of ship waste, the actual receiving capacity of the water receiving ship is calculated:

[0022] 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:

[0023] According to 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 manner, the calculating the actual receiving capacity of the water receiving ship according to the maximum receiving capacity of the ship waste includes:

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

[0026] Where 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 of 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 according to the recommended value of the average amount of pollutants of the target port, the total number of ships entering the port each year, the total tonnage of ships entering and leaving the port each year, and the annual port cargo throughput; the maximum receiving capacity of ship waste is calculated according to the average daily receiving amount of polluted ship waste, the arrival time of ships, the berthing time, and the receiving operation time of the target port:

[0029] The evaluation module is used to estimate the matching degree of the mobile water receiving facilities according to 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.

[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, wherein 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 run, the computer device where the readable storage medium is located is controlled to execute the method described in at least one possible implementation manner of the first aspect.

[0032] Compared with the prior art, the beneficial effects provided by the present invention include: using a method, device, computer equipment and readable storage medium for evaluating the water receiving capacity of coastal port ships water pollutants disclosed in the present invention, 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 ship, and finally estimating the matching degree through the amount of pollutants generated and the maximum receiving capacity, and obtaining the construction target of ship water pollutant receiving facilities, providing a scientific basis for environmental protection and facility allocation of the port. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the steps of the method for evaluating the water receiving capacity of coastal port ships for water pollutants provided in an embodiment of the present invention:

[0035] Figure 2 A schematic diagram of the configuration 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] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

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

[0041] Step S201, calculating the pollutant generation amount according to the recommended average pollutant amount of the target port, the total number of ships entering the port each year, the total tonnage of ships entering and leaving the port each year, and the annual port cargo throughput;

[0042] Step S202, according to the average daily receiving amount of dirty ship waste at the target port, the arrival time of the ship, the berthing and departure time, and the receiving operation time, the maximum receiving capacity of ship waste is calculated:

[0043] Step S203, estimating 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 obtaining the construction target of the ship water pollutant receiving facilities of the target port.

[0044] In the embodiments of the present invention, exemplary:

[0045] 1. Calculation of pollutant generation

[0046] Assume that a coastal port A is taken 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 each 10,000 gross tonnage of ships (WT) is 6.60 tons / 10,000 tons, and the recommended average pollutant amount generated by each 10,000 tons of cargo throughput (WG) is 5.70 tons / 10,000 tons; the weight coefficients (fN) are 0.31, (fT) are 0.37, and (fG) are 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 records of the port, 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 uses 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 receiving 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 amount 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 for the 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): 1 hour on average.

[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 ship’s 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. Estimation of 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 ship 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 objectives 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 operating 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 water receiving capacity of ships in coastal ports in practical applications, 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 pollutant generated is calculated based on the recommended average value of pollutants at the target port, the total number of ships entering the port each year, the total tonnage of ships entering and leaving the port each year, and the annual cargo throughput of the port, 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 obtains relevant data from the database of Port B. For the recommended average values ​​of pollutants, the following information is obtained by querying authoritative standards and actual monitoring data:

[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: 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 ships entering the port in the year (N) is 6000. This means that in the past year, a total of 6000 ships entered the port.

[0093] The total tonnage of ships entering and leaving the port reached 100 million tons per year, 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 at 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 the embodiment of the present invention, the maximum receiving capacity of ship waste is calculated according to the average daily receiving amount of dirty ship waste, the arrival time of ships, the berthing and leaving time, and the receiving operation time of the target port, which can be implemented through the following examples.

[0104] According to 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, the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage are calculated:

[0105] The maximum receiving capacity of ship waste is determined according to 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 an 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] In terms of the arrival time of ships, the server obtained that the average time for the receiving ship to arrive at the port (a) was 2 hours. The average time for berthing and leaving (b) was 1 hour. The average receiving operation time (t) was 1.5 hours. In terms of the probability of receiving ship garbage and ship sewage at the same time, the ship garbage was 25% and the ship sewage was 0.

[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 domestic 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 wastewater, assuming that the average receiving volume of ship waste per ship is 300m 3 , the receiving ship receives 4 times per 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 receiving capacity of ship waste at Port C can be accurately obtained, providing key data support for the subsequent evaluation of whether the port's ship water pollutant receiving facilities meet the demand.

[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 dirty ship waste, the arrival time of ships, the berthing and unberthing 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 for the receiving ship to arrive at the port, b is the time for the receiving ship to berth and leave the berth, t is the receiving operation time, x i It 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, a coastal port D is taken 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 ships is y, and the value for ship waste is 5 / 8. The average time a for the receiving ship to arrive at the port is 1.5 hours, the average time b for the receiving ship to berth and leave is 0.8 hours, and the average receiving operation time t is 1.2 hours. The probability of receiving ship waste and ship domestic sewage at the same time is 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 ships is y, and the value for ship domestic sewage is 3 / 8. The average time a for the receiving ship to arrive at the port is 1.8 hours, the average time b for the receiving ship to berth and leave is 0.6 hours, and the average receiving operation time t is 1 hour. The probability of receiving ship garbage and ship domestic sewage at the same time is 0 for ship domestic sewage. The server uses the formula again to calculate the maximum receiving capacity of ship domestic sewage = 1120.5 (m 3 ) The server has calculated rigorously that the maximum receiving capacity of ship garbage at Port D is about 858.75m 3 The maximum receiving capacity of domestic sewage of ships is about 1120.5m 3 .

[0125] These calculation results provide key basic data for further evaluating the ship waste reception capacity of Port D. For example, the server can compare these data with the amount of pollutants generated by the port to determine whether the port's ship water pollutant reception facilities meet actual needs. If the reception capacity is found to be insufficient, the server can generate corresponding reports and recommendations to provide decision-making support for the port management department so that measures can be taken to increase reception facilities, optimize reception processes or adjust operation arrangements, thereby improving the port's ship waste reception capacity and 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] Determine 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] Among them, C is the maximum receiving capacity of ship oily wastewater, C′ 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 every day.

[0131] In the embodiment of the present invention, illustratively, 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 per 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] Then, the server determines the maximum receiving capacity of ship waste. In the case of port E, the maximum receiving capacity of ship waste is equal to the sum of the maximum receiving capacity of ship garbage, the maximum receiving capacity of ship domestic sewage, and the maximum receiving capacity of ship oily sewage.

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

[0138] Through such precise calculations, the server has determined the maximum overall receiving capacity of ship waste at Port E. This data is of great significance for evaluating whether the ship water pollutant receiving facilities at Port E can meet actual needs.

[0139] For example, if the estimated amount of ship water pollutants generated by 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 another 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 in 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] According to the maximum receiving capacity of ship waste, the actual receiving capacity of the receiving ship on the water is calculated;

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

[0145] According to 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 ship based on this maximum receiving capacity. Assume that the initial receiving capacity of the water receiving ship 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 ship 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 the matching degree 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 receiving ships, improving the operating efficiency of existing receiving ships, shortening the sailing time of receiving ships, or increasing the single receiving volume of receiving ships.

[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 effect of these measures on the improvement of receiving capacity.

[0157] Through such comprehensive and accurate calculation and analysis, the server has 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 ship is calculated according to the maximum receiving capacity of the ship waste, which can be implemented through the following example.

[0159] By formula: Calculate and obtain the actual receiving capacity of the water receiving ship;

[0160] Where 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 of 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 in the port is 6,000 cubic meters.

[0162] Now we need to calculate the actual receiving capacity of the receiving ship on the water. Assume that the speed of the receiving ship on the water is 25 knots and the sailing distance is 100 nautical miles.

[0163] The server first converts the sailing distance into the time required in knots. Since 1 nautical mile is approximately equal to 1.852 kilometers, 100 nautical miles is approximately equal to 185.2 kilometers. And 1 knot is equal to 1.852 kilometers per hour, so the sailing speed of 25 knots is converted into kilometers per hour as 25×1.852=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 value for the average amount of pollutants generated by ships per 10,000 gross tons, in tons per 10,000 tons. The parameter values ​​are shown in Table 1;

[0176] W G The recommended value for the 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, in units of ships per year;

[0178] T is the total tonnage of ships entering and leaving the port annually, in 10,000 tons per year;

[0179] G is the annual port cargo throughput, in 10,000 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) Calculation of receiving capacity

[0185] The present invention is based on a large number of on-site surveys on the reception of ship water pollutants in coastal ports. It is found that at present, in the reception of water pollutants in coastal ports, ship garbage and ship domestic sewage may be received at the same time. According to actual statistical data on the reception of ship water pollutants in ports, the ratio of the reception times of ship garbage and ship domestic sewage is x.

[0186] Assuming that the ship pollutant receiving ship is on standby 24 hours a day, the working hours are 20 hours a day, and 330 days a year. Consider the arrival time a of the receiving ship, the berthing and departure time b, and the receiving operation time t.

[0187] (I) 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 ships, 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 when the receiving ship arrives at the port, h, b is the time when the receiving ship berths and leaves, 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] (II) Oily wastewater is received by special vessels. Oily wastewater is received at full load each time. The number of times it is received per day (according to existing rules, 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 by a single ship per time, m3;

[0199] z is the number of times the receiving ship receives the 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 pollutants need to be received within the same day (20 hours) after the ship arrives at the port, the capacity of the mobile water receiving facilities decays with distance, as shown in the following formula.

[0203]

[0204] Where: C0 is the receiving capacity of the receiving ship on the water (at the initial docking time), CL is the actual receiving capacity of the receiving ship on the water after sailing a distance of 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 water-based 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, a method for equipping ship water pollutant receiving facilities is proposed by comprehensively considering factors such as receiving demand, receiving time, construction investment, etc.

[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. An operating area is taken as a unit, the center point of the spatial position of the dock shoreline is taken as the center of the circle, and the radius is calculated based on the ship's speed of 10 knots and the limit of arriving at the port within 24 hours. The sea area for ships waiting to enter the port is circled, and the statistical data of ship inflow and outflow (ship number, tonnage, type, etc.) in the ship automatic identification system (AIS) of the area for a certain period of time (annual, monthly average, etc.) is used. 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, with the limit of all needs to be received.

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

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

[0211] The acquisition module 1101 is used to calculate the pollutant generation amount according to the recommended average value of pollutants of the target port, the total number of ships entering the port in an annual period, the total tonnage of ships entering and leaving the port in an annual period, and the annual port cargo throughput; and calculate the maximum receiving capacity of ship waste according to the average daily receiving amount of polluted ship waste, the arrival time of ships, the berthing and departure time, and the receiving operation time of the target port;

[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 of the target port.

[0213] It should be noted that the implementation principle of the above-mentioned coastal port ship water pollutant water receiving capacity assessment device 110 can refer to the implementation principle of the above-mentioned coastal port ship water pollutant water receiving capacity assessment method, which will not be repeated here. It should be understood that the division of the various modules of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into a physical entity, or physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of software called by processing elements, and some modules can be implemented in the form of hardware. For example, the coastal port ship water pollutant water receiving capacity assessment device 110 can be a separately established processing element, or it can be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and a processing element of the above-mentioned device can call and execute the function of the above coastal port ship water pollutant water receiving capacity assessment device 110. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in a processor element or an instruction in software form.

[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 (ASIC), or one or more microprocessors (DSP), or one or more field programmable gate arrays (FPGA). For another example, when a module above is implemented in the form of a processing element scheduling program code, 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 receiving capacity of coastal port ships for water pollutants. Figure 4 As shown, Figure 4The computer device 100 provided in the embodiment of the present invention is a structural block diagram. The computer device 100 comprises an evaluation device 110 for the water receiving capacity of coastal port ships for water pollutants, a memory 111, a processor 112 and a communication unit 113.

[0216] To achieve data transmission or interaction, the memory 111, the processor 112 and the communication unit 113 are electrically connected to each other directly or indirectly. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The evaluation device 110 for the water receiving capacity of coastal port ships and 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 water receiving capacity of coastal port ships and water pollutants stored in the memory 111, such as the software function modules and computer programs included in the evaluation device 110 for the water receiving capacity of coastal port ships and 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 is 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 form disclosed. Numerous modifications and variations are possible in accordance with the above teachings. These embodiments are selected and described in order to best illustrate the principles of the present disclosure and its practical application, so that those skilled in the art can best utilize the present disclosure and utilize various embodiments with different modifications to suit the intended specific application.

Claims

1. A method for evaluating the water receiving capacity of coastal port ships for water pollutants, characterized in that: include: 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 each year, the total tonnage of ships entering and leaving the port each year, and the annual port cargo throughput; 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; 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.

2. The method according to claim 1, characterized in that The pollutant generation amount is calculated based on the recommended average value of pollutants at the target port, the total number of ships entering the port each year, the total tonnage of ships entering and leaving the port each year, 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 is used to calculate the amount of pollutants produced: where 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.

3. The method according to claim 1, characterized in that The maximum receiving capacity of ship waste is calculated based on the average daily receiving amount of polluted ship waste at the target port, the arrival time of ships, the berthing and departure time, and the receiving operation time, including: According to 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, the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage are calculated: The maximum receiving capacity of ship waste is determined according to the maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage.

4. The method according to claim 3, characterized in that 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 at the target port, the time of ship arrival, the time of berthing and leaving, and the receiving operation time, including: According to the formula: The maximum receiving capacity of ship garbage and the maximum receiving capacity of ship domestic sewage are calculated; Among them, C i＝1，2 is 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 for the receiving ship to arrive at the port, b is the time for the receiving ship to berth and leave the berth, t is the receiving operation time, x i It is the probability of receiving ship garbage and ship domestic sewage at the same time.

5. The method according to claim 3, characterized in that: The method further comprises: Determine 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: C = 330 × C' × z: Among them, C is the maximum receiving capacity of ship oily wastewater, C′ 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 every day.

6. The method according to claim 1, characterized in that 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, and the construction target of the ship water pollutant receiving facility of the target port is obtained, including: According to the maximum receiving capacity of 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: According to the matching degree estimation result, the construction target of the ship water pollutant receiving facility of the target port is determined.

7. The method according to claim 1, characterized in that The actual receiving capacity of the water receiving ship is calculated based on the maximum receiving capacity of the ship waste, including: By formula: The actual receiving capacity of the above-water receiving vessel is calculated as follows: Where 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 of L, where L is the sailing distance and V is the sailing speed.

8. A device for evaluating the water receiving capacity of ships in coastal ports, characterized in that: include: The acquisition module is used to calculate the pollutant generation amount according to the recommended average value 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; and calculate the maximum receiving capacity of ship waste according to the average daily receiving amount of polluted ship waste at the target port, the time of ship arrival, the berthing and leaving time, and the receiving operation time; The evaluation module is used to estimate the matching degree of the mobile water receiving facilities according to 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.

9. A computer device, characterized in that: The computer device comprises 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 7.

10. 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 7.

Images