A constructed wetland design system for low-pollution water purification

Abstract

The present invention relates to the technical field of sewage purification, and in particular to an artificial wetland design system for low-pollution water purification, including a data acquisition terminal and a design platform. In the present invention, a river three-dimensional model construction module, a river flow trend analysis module and a river water quality analysis module cooperate with each other to gradually construct a river trend-water quality distribution model, so that designers can intuitively understand the actual situation of the river and provide a scientific reference for wetland area planning. The sewage purification model is designed according to the process of ecological water diversion weir, sand settling pond, ecological pond, horizontal subsurface artificial wetland and water stabilization pond, which can effectively purify low-pollution water step by step and improve the purification effect. The artificial wetland planning area and land area are determined according to the pollutants and pollution degree in the river water, the upstream water flow data and the terrain around the river, so that the design of the artificial wetland is more reasonable, and the purification effect can be maximized while avoiding waste of resources.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage purification, in particular to an artificial wetland design system for low-pollution water purification. Background Art

[0002] With the rapid development of industrialization and urbanization, water pollution is becoming increasingly serious. Some highly polluted water usually needs to be treated before it can be discharged into rivers. However, the water in the river still contains pollutants, which is low-pollution water. Although the pollution level of low-pollution water is relatively low, it can also have adverse effects on the ecological environment if it is not effectively treated. Traditional sewage treatment methods are often costly and energy-intensive, and their treatment effect on low-pollution water is limited.

[0003] As an ecological wastewater treatment technology, constructed wetlands are gaining increasing attention due to their low cost, simple operation and maintenance, and excellent ecological benefits. However, current constructed wetland designs often lack systematicity and scientificity, often failing to accurately plan according to the actual conditions of rivers. Therefore, to address these issues, a constructed wetland design system for low-pollution water purification was proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide an artificial wetland design system for low-pollution water purification to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A constructed wetland design system for low-pollution water purification, comprising:

[0007] Data collection end; the data collection end includes river data collection module, water flow data collection module and water quality data collection module;

[0008] The river data acquisition module uses remote sensing satellites and drones equipped with radar cameras to collect remote sensing images and radar image data of the areas through which rivers flow;

[0009] The water flow data acquisition module includes a GPS and altitude sensor installed on a floating ball. The floating ball is placed upstream of the river to collect the positioning data and altitude data of the floating ball. An ultrasonic water flow meter is set upstream of the river to collect water flow data in the upstream of the river.

[0010] The water quality data collection module includes a GPS and a water quality detection unit set on a fixed-point float, and the water quality detection unit collects water quality data;

[0011] Design platform; the design platform includes a river 3D model construction module, a river flow trend analysis module, a river water quality analysis module, and a wetland area planning module;

[0012] The river three-dimensional model construction module receives remote sensing image and radar image data of the river area and constructs a river three-dimensional model based on the remote sensing image and radar image data;

[0013] The river flow trend analysis module receives the three-dimensional river model, the positioning data and altitude data of the flow float, determines the river flow trend and flow velocity based on the positioning data of the flow float, determines the liquid level difference of the distributed water area based on the altitude data of the flow float, obtains the river flow trend analysis data, and synchronizes the river flow trend analysis data with the three-dimensional river model to obtain the river trend model;

[0014] The river water quality analysis module receives the river trend model and the water quality data collected by each fixed-point float, analyzes the water quality data, determines the pollutants and the degree of pollution, obtains river water quality analysis data, and synchronizes the river water quality analysis data with the river trend model to obtain a river trend-water quality distribution model;

[0015] The wetland area planning module receives the river trend-water quality distribution model, generates a sewage purification model based on the pollutants and pollution levels in the river water, determines the area of ​​the artificial wetland based on the sewage purification model combined with the upstream water flow data of the river, analyzes the river trend and surrounding terrain of the river in the river trend-water quality distribution model, determines the artificial wetland planning area based on the artificial wetland area, synchronizes the sewage purification model to the artificial wetland planning area, and completes the design of the artificial wetland.

[0016] As a preferred solution, the sewage purification model includes an ecological water diversion weir, a sand settling pond, an ecological pond, a horizontal subsurface flow artificial wetland and an outlet stabilization pond according to the sewage purification process.

[0017] As a preferred solution, the water quality detection unit includes a colorimetry sensor, a turbidity sensor, a pH sensor, a dissolved oxygen sensor, a COD sensor, a total phosphorus sensor, a total nitrogen sensor, an ammonia nitrogen sensor, and a BOD sensor; after receiving the water quality data collected by each fixed-point float, the river water quality analysis module analyzes and processes the water quality data to determine the pollutants that exceed the standard; the river water quality analysis module establishes a pollution gradient for color, turbidity, pH, dissolved oxygen, COD, total phosphorus, total nitrogen, ammonia nitrogen, and BOD, and at the same time, formulates the amount of purification materials and purification time required to purify each ton of sewage for each pollutant at different pollution gradients, and quantifies the distribution density of the amount of purification materials per square meter.

[0018] As a preferred solution, when collecting water flow data in the upper reaches of the river, an ultrasonic water flow tester is used to conduct detection for more than one year, and the continuous detection data of the ultrasonic water flow tester is used to establish a water flow change curve with time as the axis. The peak water flow is determined based on the water flow change curve, and the peak water flow is determined as the maximum throughput of the sewage purification model. The maximum throughput is imported into the sewage purification model, and the areas of grit ponds, ecological ponds, horizontal subsurface flow artificial wetlands and effluent stabilization ponds are calculated based on the amount of purification materials and purification time required to purify each ton of sewage for each pollutant at different pollution gradients. Then, the area of ​​artificial wetlands is calculated based on the areas of grit ponds, ecological ponds, horizontal subsurface flow artificial wetlands and effluent stabilization ponds.

[0019] As a preferred solution, when determining the artificial wetland planning area in combination with the artificial wetland area, the river trend-water quality distribution model is analyzed, and the flat areas on both sides of the river channel in the river trend-water quality distribution model are extracted. The area of ​​each flat area is calculated and compared with the artificial wetland area. The flat areas whose area can cover the artificial wetland area are screened out, and the upstream and downstream positions of the river section where the flat area is located are determined. The water level difference is analyzed based on the elevation data of the upstream and downstream positions. When the water level difference is within the water level difference threshold of the sewage purification model, the flat area is determined as the artificial wetland planning area.

[0020] It can be seen from the technical solution provided by the present invention that the present invention provides an artificial wetland design system for low-pollution water purification, which has the following beneficial effects: remote sensing images and radar image data of the area through which the river flows are collected by remote sensing satellites and drones through the river data acquisition module, which can accurately grasp the topography and landform information of the river area in a macroscopic and accurate manner, and provide a reliable data basis for constructing a three-dimensional model of the river. The GPS and altitude sensors arranged on the flow float in the water flow data acquisition module and the ultrasonic water flow tester upstream of the river can accurately determine the river flow trend, flow rate, liquid level difference and water flow change, and provide key data for analyzing the river trend and determining the design parameters of the artificial wetland. The various sensors arranged on the fixed float in the water quality data acquisition module can comprehensively detect various water quality indicators, including chromaticity, turbidity, PH, dissolved oxygen, COD, total phosphorus, total nitrogen, ammonia nitrogen and BOD, etc., accurately determine pollutants and the degree of pollution, and provide targeted purification for artificial wetlands. The three-dimensional river model construction module, the river flow trend analysis module and the river water quality analysis module cooperate with each other to gradually construct a river trend-water quality distribution model, so that designers can intuitively understand the actual situation of the river and provide a scientific reference for wetland area planning. The sewage purification model is designed according to the process of ecological water diversion weir, sedimentation pond, ecological pond, horizontal subsurface flow artificial wetland and outlet stabilization pond, which can effectively purify low-pollution water step by step and improve the purification effect. The artificial wetland planning area and land area are determined according to the pollutants and pollution degree in the river water, upstream water flow data and the terrain around the river, so that the design of the artificial wetland is more reasonable, which can maximize the purification effect and avoid waste of resources. The artificial wetland design system designs artificial wetlands according to the specific geographical environment and water quality of the river. It can be customized according to the actual situation of different rivers. It is suitable for rivers with various terrains and pollution degrees and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an artificial wetland design system for low-pollution water purification according to the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] like Figure 1As shown, an embodiment of the present invention provides an artificial wetland design system for low-pollution water purification, including a data acquisition terminal and a design platform;

[0025] The data collection end includes river data collection module, water flow data collection module and water quality data collection module;

[0026] The river data acquisition module uses remote sensing satellites and drones equipped with radar cameras to collect remote sensing images and radar image data of the areas through which rivers flow;

[0027] The water flow data acquisition module includes a GPS and altitude sensor installed on a floating ball. The floating ball is placed upstream of the river to collect the positioning data and altitude data of the floating ball. An ultrasonic water flow meter is set upstream of the river to collect water flow data in the upstream of the river.

[0028] The water quality data acquisition module includes a GPS and a water quality detection unit set on a fixed float. The water quality detection unit collects water quality data. The water quality detection unit includes a colorimetry sensor, a turbidity sensor, a pH sensor, a dissolved oxygen sensor, a COD sensor, a total phosphorus sensor, a total nitrogen sensor, an ammonia nitrogen sensor, and a BOD sensor;

[0029] The design platform includes a river 3D model construction module, a river flow trend analysis module, a river water quality analysis module, and a wetland area planning module;

[0030] The river three-dimensional model construction module receives remote sensing image and radar image data of the river area and constructs a river three-dimensional model based on the remote sensing image and radar image data;

[0031] The river flow trend analysis module receives the three-dimensional river model, the positioning data and altitude data of the flow float, determines the river flow trend and flow velocity based on the positioning data of the flow float, determines the liquid level difference of the distributed water area based on the altitude data of the flow float, obtains the river flow trend analysis data, and synchronizes the river flow trend analysis data with the three-dimensional river model to obtain the river trend model;

[0032] The river water quality analysis module receives the river trend model and the water quality data collected by each fixed-point float, analyzes the water quality data, determines the pollutants and the degree of pollution, obtains river water quality analysis data, and synchronizes the river water quality analysis data with the river trend model to obtain a river trend-water quality distribution model;

[0033] The wetland area planning module receives the river trend-water quality distribution model, generates a sewage purification model based on the pollutants and pollution levels in the river water, and determines the area of ​​the artificial wetland based on the sewage purification model and the upstream water flow data. The module analyzes the river trend and surrounding terrain in the river trend-water quality distribution model, determines the artificial wetland planning area based on the artificial wetland area, and synchronizes the sewage purification model with the artificial wetland planning area to complete the design of the artificial wetland.

[0034] Among them, the sewage purification model includes ecological water diversion weir, sand settling pond, ecological pond, horizontal subsurface flow artificial wetland and effluent stabilization pond according to the sewage purification process.

[0035] In this embodiment, after receiving the water quality data collected by each fixed-point float, the river water quality analysis module analyzes and processes the water quality data to determine the pollutants that exceed the standard; the river water quality analysis module establishes pollution gradients for color, turbidity, pH, dissolved oxygen, COD, total phosphorus, total nitrogen, ammonia nitrogen and BOD, and at the same time, formulates the amount of purification materials and purification time required to purify each ton of sewage at different pollution gradients for each pollutant, and quantifies the distribution density of the amount of purification materials per square meter.

[0036] In this embodiment, when collecting water flow data in the upper reaches of the river, an ultrasonic water flow meter is used to conduct detection for more than one year, and the continuous detection data of the ultrasonic water flow meter is used to establish a water flow change curve with time as the axis. The peak water flow is determined based on the water flow change curve, and the peak water flow is determined as the maximum throughput of the sewage purification model. The maximum throughput is imported into the sewage purification model, and the areas of grit ponds, ecological ponds, horizontal subsurface flow artificial wetlands and outlet stabilization ponds are calculated based on the amount of purification materials and purification time required to purify each ton of sewage for each pollutant at different pollution gradients. Then, the area of ​​the artificial wetlands is calculated based on the areas of the grit ponds, ecological ponds, horizontal subsurface flow artificial wetlands and outlet stabilization ponds.

[0037] In this embodiment, when determining the artificial wetland planning area in combination with the artificial wetland area, the river trend-water quality distribution model is analyzed, and the flat areas on both sides of the river channel in the river trend-water quality distribution model are extracted. The area of ​​each flat area is calculated and compared with the artificial wetland area. The flat areas whose area can cover the artificial wetland area are screened out, and the upstream and downstream positions of the river section where the flat area is located are determined. The water level difference is analyzed based on the altitude data of the upstream and downstream positions. When the water level difference is within the water level difference threshold of the sewage purification model, the flat area is determined as the artificial wetland planning area.

[0038] The present invention will be described in further detail below according to the method steps:

[0039] 1. Data Collection

[0040] The river data acquisition module collects remote sensing images and radar image data of the river flow area using remote sensing satellites and drones equipped with radar cameras.

[0041] Water flow data collection:

[0042] A floating ball equipped with GPS and altitude sensors is placed upstream of the river to collect its positioning and altitude data.

[0043] Install an ultrasonic water flow meter upstream of the river to collect water flow data upstream of the river. Conduct tests for more than one year and establish a water flow change curve with time as the axis to determine the peak water flow.

[0044] Water quality data collection:

[0045] GPS and water quality detection units are installed on the fixed float. The water quality detection units include colorimetry sensor, turbidity sensor, pH sensor, dissolved oxygen sensor, COD sensor, total phosphorus sensor, total nitrogen sensor, ammonia nitrogen sensor and BOD sensor to collect water quality data.

[0046] 2. Model Construction and Analysis

[0047] Construction of river 3D model:

[0048] The river 3D model building module receives remote sensing image and radar image data of the river area and builds a river 3D model based on these data;

[0049] Analysis of river flow trends:

[0050] The river flow trend analysis module receives the three-dimensional model of the river and the positioning data and altitude data of the flowing float;

[0051] Determine the river flow trend and velocity based on the positioning data, determine the liquid level difference in the distributed water area based on the altitude data, obtain river flow trend analysis data, and synchronize it with the three-dimensional river model to obtain a river trend model;

[0052] Analysis of river water quality:

[0053] The river water quality analysis module receives the river trend model and the water quality data collected by each fixed-point float;

[0054] Analyze water quality data to identify pollutants and their severity, and establish pollution gradients for color, turbidity, pH, dissolved oxygen, COD, total phosphorus, total nitrogen, ammonia nitrogen, and BOD. Calculate the amount of purification material and purification time required per ton of wastewater for each pollutant at different pollution gradients, as well as quantify the distribution density of purification material per square meter. Synchronize river water quality analysis data with the river trend model to develop a river trend-water quality distribution model.

[0055] 3. Wetland Regional Planning

[0056] Generate a wastewater purification model:

[0057] The wetland regional planning module receives the river flow and water quality distribution model and generates a sewage purification model based on the pollutants and pollution levels in the river water. This model includes an ecological water diversion weir, a sedimentation pond, an ecological pond, a horizontal subsurface flow artificial wetland, and an outlet stabilization pond according to the sewage purification process.

[0058] Determine the area of ​​artificial wetlands:

[0059] The peak water flow rate was determined as the maximum throughput of the sewage purification model. The area of ​​the sedimentation pond, ecological pond, horizontal subsurface flow artificial wetland and effluent stabilization pond was calculated based on the amount of purification materials and purification time required to purify each ton of sewage for each pollutant at different pollution gradients. The area of ​​the artificial wetland was then calculated.

[0060] Determine the artificial wetland planning area:

[0061] Analyze the river flow-water quality distribution model, extract the flat areas on both sides of the river, calculate the area of ​​each flat area, and compare it with the area occupied by the artificial wetland;

[0062] Screen out flat areas that can cover the area of ​​the artificial wetland, determine the upstream and downstream locations of the river section where the flat areas are located, and analyze the water level difference based on the upstream and downstream elevation data;

[0063] When the water level difference is within the water level difference threshold of the sewage purification model, the flat area is determined to be the artificial wetland planning area, and the sewage purification model is synchronized to the artificial wetland planning area to complete the design of the artificial wetland.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A constructed wetland design system for low-pollution water purification, characterized by: include: Data collection terminal; The data acquisition terminal includes a river data acquisition module, a water flow data acquisition module and a water quality data acquisition module; The river data acquisition module uses remote sensing satellites and drones equipped with radar cameras to collect remote sensing image and radar image data of the area through which the river flows; The water flow data collection module includes a GPS and an altitude sensor arranged on a flow float, and the flow float is placed upstream of the river to collect the positioning data and altitude data of the flow float; an ultrasonic water flow tester is arranged upstream of the river to collect the water flow data of the upstream of the river; The water quality data collection module includes a GPS and a water quality detection unit arranged on a fixed-point floating ball, and the water quality detection unit collects water quality data; Design platform; the design platform includes a river three-dimensional model construction module, a river flow trend analysis module, a river water quality analysis module and a wetland area planning module; The river three-dimensional model building module receives remote sensing images and radar image data of the river area, and builds a river three-dimensional model according to the remote sensing images and radar image data; The river flow trend analysis module receives the three-dimensional model of the river, receives the positioning data and altitude data of the flow float, determines the river flow trend and flow velocity according to the positioning data of the flow float, determines the liquid level difference of the distributed water area according to the altitude data of the flow float, obtains the river flow trend analysis data, and synchronizes the river flow trend analysis data to the three-dimensional model of the river to obtain the river trend model; The river water quality analysis module receives the river trend model, receives the water quality data collected by each fixed-point float, analyzes the water quality data, determines the pollutants and the degree of pollution, obtains the river water quality analysis data, and synchronizes the river water quality analysis data to the river trend model to obtain the river trend-water quality distribution model; The wetland area planning module receives the river trend-water quality distribution model, generates a sewage purification model according to the pollutants and pollution degree in the river water, determines the area of ​​artificial wetland according to the sewage purification model combined with the water flow data of the upstream river, analyzes the river trend and the terrain around the river in the river trend-water quality distribution model, determines the artificial wetland planning area in combination with the artificial wetland area, synchronizes the sewage purification model to the artificial wetland planning area, and completes the design of the artificial wetland; The sewage purification model includes an ecological water diversion weir, a sand settling pond, an ecological pond, a horizontal subsurface flow artificial wetland and an outlet stabilization pond according to the sewage purification process; The water quality detection unit includes a colorimetric sensor, a turbidity sensor, a pH sensor, a dissolved oxygen sensor, a COD sensor, a total phosphorus sensor, a total nitrogen sensor, an ammonia nitrogen sensor, and a BOD sensor; after receiving the water quality data collected by each fixed-point float, the river water quality analysis module analyzes and processes the water quality data to determine the pollutants that exceed the standard; The river water quality analysis module establishes pollution gradients for chromaticity, turbidity, pH, dissolved oxygen, COD, total phosphorus, total nitrogen, ammonia nitrogen and BOD, and at the same time, formulates the amount of purification materials and purification time required for purifying each ton of sewage at different pollution gradients for each pollutant, and quantifies the distribution density of the amount of purification materials per square meter; When collecting water flow data in the upper reaches of the river, an ultrasonic water flow tester is used to conduct a test for more than one year, and a water flow change curve is established with time as the axis for the continuous test data of the ultrasonic water flow tester, and the peak water flow is determined according to the water flow change curve, and the peak water flow is determined as the maximum throughput of the sewage purification model, and the maximum throughput is imported into the sewage purification model, and the areas of the sedimentation pond, ecological pond, horizontal subsurface flow artificial wetland and outlet stabilization pond are calculated in combination with the amount of purification materials and purification time required for purifying each ton of sewage at different pollution gradients for each pollutant, and then the area of ​​the artificial wetland is calculated according to the areas of the sedimentation pond, ecological pond, horizontal subsurface flow artificial wetland and outlet stabilization pond; When determining the artificial wetland planning area in combination with the artificial wetland area, the river trend-water quality distribution model is analyzed, and the flat areas on both sides of the river channel in the river trend-water quality distribution model are extracted. The area of ​​each flat area is calculated and compared with the artificial wetland area. The flat areas whose area can cover the artificial wetland area are screened out, and the upstream and downstream positions of the river section where the flat area is located are determined. The water level difference is analyzed based on the elevation data of the upstream and downstream positions. When the water level difference is within the water level difference threshold of the sewage purification model, the flat area is determined as the artificial wetland planning area.

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