Aquaculture non-point source pollution treatment method based on ecological-hydraulic engineering

Abstract

The invention discloses an aquaculture non-point source pollution treatment method based on ecological-hydraulic engineering, which comprises the following steps: acquiring water quality monitoring basic data of a target aquaculture area, inputting the water quality monitoring basic data into an ecological simulation environment matched with an ecological-hydraulic engineering fishpond, and generating a plurality of ecological purification schemes, constructing an environmental fluid dynamic model corresponding to the ecological-water conservancy project fishpond by taking the lowest waterlogging risk, the least fresh water supply, the maximum water quality index improvement and the lowest bioremediation cost as constraint conditions, and inputting each ecological purification scheme into the constructed environmental fluid dynamic model one by one to obtain an optimal ecological purification scheme. A control strategy corresponding to the optimal ecological purification scheme is executed, and the control strategy at least comprises an ecological restoration strategy and a water conservancy control strategy. According to the method, the water environment quality of the target culture area can be remarkably improved, the waterlogging risk is reduced, and recovery and balance of an ecological system are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, and in particular to a method for treating non-point source pollution in aquaculture based on ecological - water conservancy projects. Background Art

[0002] With the continuous development of technology, aquaculture, as an important branch in the agricultural field, plays an increasingly important role in meeting food demand, promoting economic development, driving technological innovation and industrial upgrading, and achieving sustainable utilization of resources and environmental protection.

[0003] In the existing aquaculture technology, the pond aquaculture mode of "intake channel + aquaculture pond + drainage channel" accounts for more than 75% of freshwater aquaculture. The control of various parameters in the fishpond, such as the water intake, depends on artificial experience. With the continuous improvement of aquaculture levels, the fish - carrying capacity per unit water body has also increased. However, a large amount of feed input and the accumulation of fish metabolites have led to an increase in endogenous pollution in the pond, the exceeding of harmful substances in the pond, frequent occurrence of fish diseases, and an increase in the water replacement volume and frequency of the pond, which has a serious impact on the regional ecological environment.

[0004] Therefore, how to improve the control accuracy of aquaculture has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0005] The present invention provides a method for treating non - point source pollution in aquaculture based on ecological - water conservancy projects to achieve reasonable control of aquaculture.

[0006] To solve the above - mentioned technical problems, an embodiment of the present invention provides a method for treating non - point source pollution in aquaculture based on ecological - water conservancy projects, which is applied to an ecological - water conservancy project fishpond and includes:

[0007] Obtain the basic water quality monitoring data of the target aquaculture area.

[0008] Input the basic water quality monitoring data into an ecological simulation environment matching the ecological - water conservancy project fishpond to generate a number of ecological purification schemes.

[0009] Construct an environmental fluid dynamics model corresponding to the ecological - water conservancy project fishpond with the lowest waterlogging risk, the least fresh water supply, the maximum improvement of water quality index, and the lowest bioremediation cost as constraints.

[0010] Input each of the ecological purification schemes into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification scheme.

[0011] Implement the control strategy corresponding to the optimal ecological purification plan, where the control strategy at least includes an ecological restoration strategy and a water conservancy control strategy.

[0012] Further, the implementation of the control strategy corresponding to the optimal ecological purification plan includes:

[0013] Adjust and control the ecological ditch body, ecological intercepting dam, and check gate of the target aquaculture area according to the optimal ecological purification plan.

[0014] Control the types and planting densities of the bottom plants and side plants of the ditches in the target aquaculture area according to the optimal ecological purification plan.

[0015] Further, the input of the basic water quality monitoring data into the ecological simulation environment matching the ecological - water conservancy project fishpond to generate a number of ecological purification plans includes:

[0016] Input the basic water quality monitoring data into the ecological simulation environment matching the ecological - water conservancy project fishpond, and simulate the hydrodynamic characteristics under different engineering configurations according to the sizes, materials, and layouts of different ecological ditch bodies, ecological intercepting dams, and check gates.

[0017] Simulate the absorption and interception effects of plants on pollutants such as nitrogen and phosphorus according to the types, densities, and growth characteristics of different bottom plants and side plants of the ditches.

[0018] Simulate the flow process of the aquaculture tail water in the ecological ditch according to the hydrodynamic characteristics and the absorption and interception effects, and obtain a number of ecological purification plans according to the simulation results.

[0019] Further, the acquisition of the basic water quality monitoring data of the target aquaculture area includes:

[0020] Set a number of monitoring points in the target aquaculture area according to the ecological and environmental function requirements of the target aquaculture area, and obtain the basic water quality monitoring data collected at each monitoring point.

[0021] Conduct a rationality assessment on the basis of the water quality monitoring data by using the cluster analysis method and the correlation analysis method, and optimize and adjust the monitoring points according to the assessment results.

[0022] Further, the environmental fluid dynamics model is expressed as:

[0023] Min[z1(x,y),z2(x,y),z3(x,y),z4(x,y)]

[0024]

[0025] xmin ≤ x ≤ x max

[0026] y min ≤ y ≤ y max

[0027] where x is the water flow rate of the ecological pond, y is the decision variable of ecological control, z1(x, y), z2(x, y), z3(x, y) and z4(x, y) are the minimum waterlogging risk, the least fresh water replenishment, the maximum water quality index improvement and the lowest bioremediation cost respectively, w set is the preset water environment standard, S t is the pollutant simulated by the environmental fluid dynamics model, D t is the non-point source pollution reduction efficiency of bioremediation, are the parameters of the environmental fluid dynamics model, are the parameters of the response relationship in the model.

[0028] Furthermore, stepwise inputting each of the ecological purification schemes into the constructed environmental fluid dynamics model to obtain an optimal ecological purification scheme includes:

[0029] Inputting the engineering configuration parameters and biological configuration parameters of each of the ecological purification schemes into the environmental fluid dynamics model.

[0030] Calculating the waterlogging risk, fresh water replenishment amount, water quality index improvement degree and bioremediation cost corresponding to each of the ecological purification schemes through the environmental fluid dynamics model to determine the quantitative response relationship between the parameters of the ecological purification scheme and water environment improvement.

[0031] Screening according to the quantitative response relationship to obtain an optimal ecological purification scheme that meets the preset water environment standard.

[0032] Furthermore, the control strategy further includes a pollutant discharge strategy.

[0033] Implementing the control strategy corresponding to the optimal ecological purification scheme further includes:

[0034] Setting carrier membranes with preset quantities and types in the ecological pond of the target aquaculture area according to the optimal ecological purification scheme.

[0035] Another embodiment of the present invention provides an aquaculture non-point source pollution treatment device based on ecological - water conservancy projects, including:

[0036] A data acquisition module for obtaining basic water quality monitoring data of the target aquaculture area.

[0037] A solution generation module for inputting the basic water quality monitoring data into an ecological simulation environment matching the ecological - water conservancy project fishpond to generate a number of ecological purification solutions.

[0038] A model construction module for constructing an environmental fluid dynamics model corresponding to the ecological - water conservancy project fishpond with the lowest waterlogging risk, the least fresh water replenishment, the maximum improvement of water quality index, and the lowest bioremediation cost as constraints.

[0039] A solution screening module for inputting each of the ecological purification solutions into the constructed environmental fluid dynamics model one by one to obtain an optimal ecological purification solution.

[0040] An ecological control module for executing the control strategy corresponding to the optimal ecological purification solution, where the control strategy at least includes an ecological restoration strategy and a water conservancy control strategy.

[0041] Another embodiment of the present invention provides a computer device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the above - mentioned method for treating non - point source pollution in aquaculture based on ecological - water conservancy projects.

[0042] Another embodiment of the present invention provides a computer - readable storage medium. The computer - readable storage medium stores a computer program. When the device where the computer - readable storage medium is located executes the computer program, it implements the above - mentioned method for treating non - point source pollution in aquaculture based on ecological - water conservancy projects.

[0043] Compared with the prior art, the beneficial effects of the embodiments of the present invention are at least one of the following:

[0044] By scientifically arranging monitoring points, constructing an ecological ditch simulation system, implementing a multi - objective optimized water environment balance model, and controlling the ecological aquaculture water body in the fishpond according to the optimal ecological purification solution, it can significantly improve the water environment quality of the target aquaculture area, reduce the waterlogging risk, and promote the restoration and balance of the ecological system. At the same time, on the basis of maximizing ecological benefits, this solution effectively saves water resources, reduces bioremediation costs, promotes the sustainable development of ecological aquaculture, and realizes the double improvement of economic and ecological benefits. In addition, by comprehensively applying engineering ecological and biological ecological means, the stability and resistance of the fishpond ecological system are enhanced, laying a solid foundation for the long - term sustainable development of aquaculture. Description of the Drawings

[0045] Figure 1 It is a flowchart of the steps of the method for treating non - point source pollution in aquaculture based on ecological - water conservancy projects provided by the embodiments of the present invention;

[0046] Figure 2 It is a structural block diagram of an aquaculture non-point source pollution treatment device based on an ecological - water conservancy project provided by an embodiment of the present invention;

[0047] Figure 3 It is a structural diagram of a computer device provided by an embodiment of the present invention. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0049] In the description of this application, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0050] In the description of this application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions used herein are only for the purpose of illustration, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of the present application, it should be noted that unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the technical field to which this technology belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] An embodiment of the present invention provides a method for treating non-point source pollution in aquaculture based on ecological-water conservancy projects. Specifically, please refer to Figure 1 , Figure 1 which is shown as the step flow chart of the method for treating non-point source pollution in aquaculture based on ecological-water conservancy projects in one of the embodiments of the present invention, including steps S11 to S15:

[0053] Step S11, obtaining the basic water quality monitoring data of the target aquaculture area.

[0054] With the continuous rise of the aquaculture industry, the agricultural structure in many coastal areas has been adjusted to mainly focus on pond aquaculture. The density of pond aquaculture is high, the amount of feed put in is large, and the pollution load is heavy. The direct discharge of a large amount of aquaculture wastewater has directly threatened the life and property safety of coastal residents. Based on the structure of the network river water system in coastal areas and the high discharge standard requirements for aquaculture wastewater, carrying out the comprehensive treatment and recycling of non-point source aquaculture wastewater is conducive to ensuring the water quality safety of water resource allocation projects; moreover, the technology for treating non-point source wastewater from high-density aquaculture is of great significance for promoting the recycling of aquaculture tail water resources, protecting the health of the river and lake ecological environment, and promoting the sustainable and high-quality development of the economic society.

[0055] In this embodiment, an island in a certain coastal area is selected as an example, and the island is used as the target aquaculture area to describe the solution.

[0056] According to the water environment ecological function requirements of the target aquaculture area, several monitoring points are set in the target aquaculture area to obtain the basic water quality monitoring data collected at each monitoring point.

[0057] Specifically, the water environment ecological function requirements refer to the normal operation and interdependent relationship of various biological and abiotic elements in the aquatic ecosystem, such as maintaining the ecological balance of the ecosystem, ensuring biodiversity, promoting material cycling and energy flow, and regulating and recovering in response to external disturbances.

[0058] According to the above requirements and combined with the characteristics of the interlaced relationship of the water system in the target aquaculture area, the high density of aquaculture ponds, and the heavy pollution load, the monitoring points are reasonably arranged in the target aquaculture area to collect the basic water quality monitoring data, so as to comprehensively and accurately reflect the water quality status of the target aquaculture area.

[0059] Preferably, in this embodiment, the basic water quality monitoring data can also be improved and supplemented by systematically investigating the target aquaculture area and based on the investigation results. Specifically, the aquaculture distribution, prominent pollution problems, and hydrogeological conditions in the target aquaculture area can be systematically investigated, the typical aquaculture tail water pollution characteristics and classifications in the target aquaculture area can be sorted out, a questionnaire survey can be carried out from aspects such as aquaculture facility conditions, aquaculture varieties, aquaculture cycles, water change frequencies, feed feeding methods and feeding amounts, and economic benefits, the nutrient and pollutant emissions can be evaluated in combination with the fish growth cycle, the current situation of typical pollution sources such as aquaculture and agricultural drainage in the target aquaculture area can be comprehensively investigated, and the load emissions of pollutants such as nitrogen and phosphorus in aquaculture in the target aquaculture area can be studied.

[0060] Preferably, in the subsequent analysis and evaluation process, the location settings of the monitoring points can also be optimized. In this embodiment, the cluster analysis method and the correlation analysis method are used for rationality evaluation, and the monitoring points are optimized and adjusted according to the evaluation results.

[0061] Specifically: The monitoring points are clustered according to water quality characteristics to identify areas with similar or significantly different water qualities, and the number of monitoring points in the corresponding areas is reduced or increased according to the identification results; the correlation of water quality indicators between different monitoring points is analyzed, and the location selection of each monitoring point is adjusted according to the analysis results.

[0062] Through evaluation and optimization, the monitoring points can be more reasonably arranged, making the monitoring more efficient and accurate, reducing unnecessary monitoring points, lowering the monitoring cost, and at the same time improving the pertinence and effectiveness of the monitoring.

[0063] Step S12, input the basic water quality monitoring data into an ecological simulation environment matching the ecological - water conservancy project fishpond to generate a number of ecological purification schemes.

[0064] The ecological - water conservancy project fishpond includes an ecological part and a water conservancy part. The ecological part mainly includes the canal bottom and the plants on both sides of the canal. The water conservancy part mainly includes the ecological canal body, the ecological intercepting dam, and the regulating sluice. Different setting methods of each part of the ecological - water conservancy project fishpond have different impacts on the operation of the fishpond. Therefore, before implementation, it is necessary to first preliminarily generate a part of feasible ecological purification schemes.

[0065] The specific generation process of the ecological purification scheme is to input the basic water quality monitoring data into an ecological simulation environment matching the ecological - water conservancy project fishpond, and according to the sizes, materials, and layouts of different ecological canal bodies, ecological intercepting dams, and regulating sluices, simulate the hydrodynamic characteristics under different engineering configurations, so as to screen out some feasible engineering configuration schemes, which can meet the preliminary requirements of smoother water flow, reduced siltation and scouring.

[0066] Plants play an important role in ecological ditches and can absorb and intercept pollutants such as nitrogen and phosphorus in water bodies. Therefore, simulating the absorption and interception effect of plants on pollutants is of great significance for evaluating the purification ability of plants. According to the types, densities, and growth characteristics of different bottom plants and side plants in the ditch, simulate the absorption and interception effect of plants on pollutants such as nitrogen and phosphorus, and screen out some plant configuration schemes that can meet the preliminary purification requirements of ecological ditches.

[0067] According to the hydrodynamic characteristics and absorption and interception effect, simulate the flow process of aquaculture tail water in the ecological ditch. Based on the simulation results, obtain several feasible ecological purification schemes within a reasonable range, providing a reasonable selection space for the subsequent screening of the optimal scheme.

[0068] Step S13, taking the lowest waterlogging risk, the least fresh water supply, the greatest improvement in water quality index, and the lowest bioremediation cost as constraints, construct an environmental fluid dynamics model corresponding to the ecological - hydraulic engineering fishpond.

[0069] To screen out the optimal scheme from various ecological purification schemes, in this embodiment, an environmental fluid dynamics model based on EFDC (Environmental Fluid Dynamics Code) is constructed to simulate the hydrodynamic processes of the fishpond and its surrounding water environment, including key parameters such as water flow velocity, flow direction, and water body mixing conditions. By inputting the configuration parameters corresponding to each ecological purification scheme, the model can predict the changing trends of the fishpond water quality under different scenarios, helping to timely discover potential water quality problems and take corresponding measures for prevention and response.

[0070] The general form of the environmental fluid dynamics model is specifically expressed as:

[0071]

[0072] x min ≤x≤x max

[0073] y min ≤y≤y max

[0074] Among them, x is the water flow rate of the ecological pond, y is the decision variable of ecological control, w set is the preset water environment standard, S t is the pollutant simulated by the environmental fluid dynamics model, D t is the non - point source pollution reduction efficiency of bioremediation, is the parameter of the environmental fluid dynamics model, is the parameter of the response relationship in the model.

[0075] The constraint conditions of the model are:

[0076] Min[z1(x,y), z2(x,y), z3(x,y), z4(x,y)]

[0077] Among them, z1(x,y), z2(x,y), z3(x,y) and z4(x,y) are the lowest waterlogging risk, the least fresh water replenishment, the maximum water quality index improvement and the lowest bioremediation cost respectively.

[0078] In order to maximize the aquaculture benefits, it is necessary to set restrictive constraints in the model construction. Specifically, in this embodiment, the lowest waterlogging risk, the least fresh water replenishment, the maximum water quality index improvement and the lowest bioremediation cost are used as constraints to complete the construction of the model.

[0079] Waterlogging is one of the common risks in water conservancy projects, which may cause damage to fish ponds and surrounding areas, affecting water quality and the ecological environment. By setting the lowest waterlogging risk as a constraint condition, it can be ensured that the model fully considers the drainage and flood control capabilities when designing water conservancy projects, reducing the risk of waterlogging affecting fish ponds and surrounding areas, and protecting water quality and the ecological environment.

[0080] Fresh water replenishment is an important link in the water quality management of fish ponds. However, excessive replenishment will increase water resource consumption and costs. Setting the least fresh water replenishment as a constraint condition can prompt the model to pay more attention to water resource conservation and recycling when optimizing the water quality management plan, reducing the consumption of fresh water and lowering the operating costs.

[0081] Water quality is a key factor affecting the ecological environment and aquaculture benefits of fish ponds. Taking the maximum water quality index improvement as a constraint condition can ensure that the model fully considers the need for water quality improvement when designing and optimizing water conservancy projects. Through reasonable engineering measures and ecological restoration means, the water quality of fish ponds can be improved, providing a better living environment for fish and enhancing aquaculture benefits.

[0082] Bioremediation is an effective ecological restoration means, but it has a high cost. Setting the lowest bioremediation cost as a constraint condition can prompt the model to pay more attention to cost-benefit analysis when designing and optimizing ecological restoration plans, selecting cost-effective bioremediation technologies, reducing the restoration cost and improving the restoration effect.

[0083] Step S14: Input each ecological purification plan into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification plan.

[0084] The environmental fluid dynamics model can simulate the fluid dynamics processes of the actual water environment, including water flow, water quality changes, etc. Inputting each ecological purification plan into the model can accurately evaluate the impacts of these plans on key indicators such as waterlogging risk, fresh water replenishment volume, water quality index improvement degree and bioremediation cost, thus avoiding errors caused by relying solely on experience or theoretical speculation.

[0085] Input the engineering configuration parameters and biological configuration parameters of each ecological purification scheme into the environmental fluid dynamics model.

[0086] By using the environmental fluid dynamics model, calculate the waterlogging risk, fresh water recharge, water quality index improvement degree, and bioremediation cost corresponding to each ecological purification scheme respectively. The impacts of each scheme on key indicators can be quantified, which is convenient for comparison and screening. At the same time, these indicators are also important bases for evaluating the advantages and disadvantages of the schemes.

[0087] Based on the model calculation results, determine the quantitative response relationship between the parameters of the ecological purification scheme and the improvement of the water environment, which can specify the specific impacts of the scheme parameters on water quality and the ecological environment, and facilitate the subsequent adjustment of the ecological purification scheme.

[0088] According to the quantitative response relationship, screen out the optimal ecological purification scheme that meets the preset water environment standards, ensuring that the selected scheme can not only effectively improve water quality and the ecological environment, but also meet the requirements of economy and feasibility. At the same time, the implementation of the optimal scheme can maximize the utilization of resources and reduce unnecessary waste.

[0089] Step S15: Execute the control strategy corresponding to the optimal ecological purification scheme, where the control strategy at least includes an ecological restoration strategy and a water conservancy control strategy.

[0090] The optimal ecological purification scheme is selected based on the environmental fluid dynamics model. However, only the scheme itself is not sufficient to ensure the improvement of water quality and the ecological environment. It is necessary to implement the corresponding control strategy to ensure the effective execution of various measures in the scheme, so as to achieve the expected goals of water quality and ecological environment improvement.

[0091] Executing the control strategy corresponding to the optimal ecological purification scheme includes:

[0092] According to the optimal ecological purification scheme, adjust and control the ecological ditch body, ecological intercepting dam, and sluice gate in the target aquaculture area, which can control the water flow velocity, water level, and water volume, thereby improving water quality and the ecological environment.

[0093] According to the optimal ecological purification scheme, control the types and planting densities of the bottom plants and side plants in the target aquaculture area. Selecting appropriate plant types and planting densities can absorb nutrients in the water, reduce pollutant emissions, beautify the environment at the same time, contribute to improving water quality and the ecological environment, and increase the stability and ornamental value of the ecological ditch.

[0094] Preferably, the control strategy of this embodiment may further include a pollutant emission strategy. Formulating a strict pollutant emission strategy can control the emission amount and emission method of pollutants, thereby reducing environmental pollution.

[0095] Therefore, implementing the control strategy corresponding to the optimal ecological purification plan further includes:

[0096] Set a preset quantity and type of carrier biofilm in the ecological pond of the target aquaculture area according to the optimal ecological purification plan. The carrier biofilm is a biofilm structure formed by microorganisms attaching to the surface of a specific carrier, usually small materials such as crushed stones, volcanic stones, and plastic fillers, stacked or piled up into a filter bed to provide space for the attachment and growth of microorganisms and an attachment site for organisms such as nitrifying bacteria in water. The carrier biofilm can provide an environment for the attachment and growth of microorganisms and promote the degradation of pollutants by microorganisms.

[0097] The method for treating non-point source pollution in aquaculture based on ecological-hydraulic engineering of the present invention can significantly improve the water environment quality of the target aquaculture area, reduce the risk of waterlogging, and promote the restoration and balance of the ecosystem by scientifically arranging monitoring points, constructing an ecological ditch simulation system, implementing a multi-objective optimized water environment balance model, and controlling the ecological aquaculture water body in the fish pond according to the optimal ecological purification plan. At the same time, on the basis of maximizing ecological benefits, the scheme effectively saves water resources, reduces the cost of bioremediation, promotes the sustainable development of ecological aquaculture, and realizes the double improvement of economic and ecological benefits. In addition, by comprehensively applying engineering ecology and biological ecology means, the stability and resistance of the fish pond ecosystem are enhanced, laying a solid foundation for the long-term sustainable development of aquaculture.

[0098] An embodiment of the present invention also provides a device for treating non-point source pollution in aquaculture based on ecological-hydraulic engineering, which is used to execute the method for treating non-point source pollution in aquaculture based on ecological-hydraulic engineering as described above. Figure 2 It is a structural block diagram of the device for treating non-point source pollution in aquaculture based on ecological-hydraulic engineering of an embodiment of the present invention. The device includes:

[0099] A data acquisition module 21, which is used to obtain the basic water quality monitoring data of the target aquaculture area.

[0100] A scheme generation module 22, which is used to input the basic water quality monitoring data into an ecological simulation environment matching the ecological-hydraulic engineering fish pond to generate a number of ecological purification schemes.

[0101] A model construction module 23, which is used to construct an environmental fluid dynamics model corresponding to the ecological-hydraulic engineering fish pond with the lowest waterlogging risk, the least fresh water replenishment, the greatest improvement in water quality index, and the lowest bioremediation cost as constraints.

[0102] A scheme screening module 24, which is used to input each of the ecological purification schemes into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification scheme.

[0103] An ecological control module 25, configured to execute a control strategy corresponding to the optimal ecological purification solution, wherein the control strategy at least includes an ecological restoration strategy and a water conservancy control strategy.

[0104] The technical features and technical effects of the device proposed in the embodiments of the present invention are the same as those of the method proposed in the embodiments of the present invention, and will not be elaborated herein. Each module in the above device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in the processor of the computer device in hardware form or be independent of it, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0105] The embodiments of the present invention also provide a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program runs, it controls the device where the computer-readable storage medium is located to execute the method for treating aquaculture non-point source pollution based on ecological-water conservancy projects as described above.

[0106] The embodiments of the present invention also provide a computer device, Figure 3 which is a structural block diagram of a preferred embodiment of a computer device provided by the present invention. The computer device includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the method for treating aquaculture non-point source pollution based on ecological-water conservancy projects as described above.

[0107] Preferably, the computer program can be divided into one or more modules / units (such as computer program 1, computer program 2,...). The one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of completing specific functions, and these instruction segments are used to describe the execution process of the computer program in the computer device.

[0108] The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may also be any conventional processor. The processor is the control center of the computer device and connects various parts of the computer device using various interfaces and lines.

[0109] The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function, etc., and the data storage area can store relevant data, etc. In addition, the memory may be a high-speed random access memory, or may also be a non-volatile memory, such as a plug-in hard disk, a SmartMedia Card (SMC), a Secure Digital (SD) card, a Flash Card, etc., or the memory may also be other volatile solid-state storage devices.

[0110] It should be noted that the above computer device may include, but is not limited to, a processor and a memory. Those skilled in the art can understand that Figure 3 The structural block diagram is only an example of the computer device and does not constitute a limitation on the computer device. It may include more or fewer components than shown, or combine certain components, or different components.

[0111] In summary, the method for treating aquaculture non-point source pollution based on ecological-water conservancy projects provided by the embodiments of the present invention, compared with the prior art, has beneficial effects in at least one of the following:

[0112] By scientifically arranging monitoring points, constructing an ecological ditch simulation system, implementing a multi-objective optimized water environment balance model, and controlling the ecological aquaculture water body of fish ponds according to the optimal ecological purification plan, it is possible to significantly improve the water environment quality of the target aquaculture area, reduce the risk of waterlogging, and promote the restoration and balance of the ecosystem. At the same time, on the basis of maximizing ecological benefits, this plan effectively saves water resources, reduces the cost of bioremediation, promotes the sustainable development of ecological aquaculture, and realizes the double improvement of economic and ecological benefits. In addition, by comprehensively applying engineering ecology and biological ecology means, the stability and resistance of the fish pond ecosystem are enhanced, laying a solid foundation for the long-term sustainable development of aquaculture.

[0113] The above-described embodiments merely represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering, characterized in that: Applied in ecological-hydraulic engineering fish ponds, the method comprises: Obtain basic water quality monitoring data in target aquaculture areas; Inputting the water quality monitoring basic data into an ecological simulation environment matching the ecological-hydraulic engineering fish pond to generate a number of ecological purification schemes; Taking the minimum waterlogging risk, minimum fresh water supply, maximum water quality index improvement and minimum bioremediation cost as constraints, an environmental fluid dynamics model corresponding to the fish pond of the eco-hydraulic engineering project is constructed; Input each of the ecological purification schemes into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification scheme; Execute the control strategy corresponding to the optimal ecological purification scheme, wherein the control strategy at least includes an ecological restoration strategy and a water control strategy.

2. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The control strategy corresponding to the execution of the optimal ecological purification scheme includes: According to the optimal ecological purification scheme, regulating and controlling the ecological ditch body, ecological interception dam and regulating gate in the target aquaculture area; The types and planting densities of the canal bottom plants and canal side plants in the target aquaculture area are controlled according to the optimal ecological purification scheme.

3. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The water quality monitoring basic data is input into an ecological simulation environment matching the ecological-hydraulic engineering fish pond to generate a number of ecological purification schemes, including: Input the basic water quality monitoring data into an ecological simulation environment that matches the fish pond of the ecological-hydraulic engineering project, and simulate the hydrodynamic characteristics under different engineering configurations according to the size, material and layout of different ecological ditch bodies, ecological interception dams and control gates; According to the types, density and growth characteristics of different canal bottom plants and canal side plants, simulate the absorption and interception effect of plants on pollutants such as nitrogen and phosphorus; The flow process of aquaculture tail water in an ecological ditch is simulated according to the hydrodynamic characteristics and the absorption and interception effects, and several ecological purification schemes are obtained according to the simulation results.

4. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The basic data of water quality monitoring in the target aquaculture area is obtained, including: According to the water environment ecological function requirements of the target aquaculture area, a number of monitoring points are set in the target aquaculture area, and basic water quality monitoring data collected by each of the monitoring points are obtained; Cluster analysis and correlation analysis are used to conduct rationality assessment based on the basic water quality monitoring data, and the monitoring points are optimized and adjusted based on the assessment results.

5. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The environmental fluid dynamics model is expressed as: Min[z1(x,y),z2(x,y),z3(x,y),z4(x,y)] x min ≤x≤x max and min ≤y≤y max Where x is the water flow of the ecological pond, y is the decision variable of ecological control, z1(x,y), z2(x,y), z3(x,y) and z4(x,y) are the lowest waterlogging risk, the least fresh water supply, the maximum water quality index improvement and the lowest bioremediation cost, respectively, and w set is the preset water environment standard, S t Pollutants simulated by the environmental fluid dynamics model, D t For the efficiency of non-point source pollution reduction by bioremediation, are the parameters of the environmental fluid dynamics model, are the parameters of the response relationship in the model.

6. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The step of inputting each of the ecological purification schemes into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification scheme includes: Inputting the engineering configuration parameters and biological configuration parameters of each of the ecological purification schemes into the environmental fluid dynamics model; The environmental fluid dynamics model is used to calculate the waterlogging risk, fresh water supply, water quality index improvement degree and bioremediation cost corresponding to each of the ecological purification schemes, so as to determine the quantitative response relationship between each parameter of the ecological purification scheme and the improvement of the water environment; The optimal ecological purification scheme that meets the preset water environment standards is screened according to the quantitative response relationship.

7. The method for controlling aquaculture non-point source pollution based on ecological-hydraulic engineering according to claim 1, characterized in that: The control strategy also includes a pollutant emission strategy; The control strategy corresponding to the execution of the optimal ecological purification scheme also includes: According to the optimal ecological purification scheme, a preset number and type of carrier membranes are set in the ecological pond of the target aquaculture area.

8. An aquaculture non-point source pollution control device based on ecological-hydraulic engineering, characterized in that: include: Data collection module, used to obtain basic data on water quality monitoring in target aquaculture areas; A scheme generation module is used to input the water quality monitoring basic data into an ecological simulation environment matching the ecological-hydraulic engineering fish pond to generate a number of ecological purification schemes; A model building module, for building an environmental fluid dynamics model corresponding to the fish pond of the eco-hydraulic engineering project with minimum waterlogging risk, minimum fresh water supply, maximum water quality index improvement and minimum bioremediation cost as constraints; A scheme screening module is used to input each of the ecological purification schemes into the constructed environmental fluid dynamics model one by one to obtain the optimal ecological purification scheme; The ecological control module is used to execute the control strategy corresponding to the optimal ecological purification solution, wherein the control strategy at least includes an ecological restoration strategy and a water control strategy.

9. A computer device, characterized in that: It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the method for controlling aquaculture non-point source pollution based on ecological-water conservancy engineering as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the device where the computer-readable storage medium is located executes the computer program, the method for controlling aquaculture non-point source pollution based on ecological-water conservancy engineering as described in any one of claims 1 to 7 is implemented.

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