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A method and system for detecting clogging and short flow in subsurface constructed wetland

A technology of artificial wetlands and detection methods, applied in chemical instruments and methods, heat measurement, measurement devices, etc., can solve problems such as obstacles, inability to evaluate clogging degree levels in real time, conductivity and background value interference detection results, etc., and achieve a simple structure. Effect

Active Publication Date: 2021-07-20
INST OF AQUATIC LIFE ACAD SINICA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can accurately locate the clogged area, and can judge the relative clogged degree of the clogged area, which provides technical support for the sustainable operation of the subsurface flow constructed wetland. case, to work
If it is a submerged subsurface wetland, this method cannot be used if there is no bottom drainage structure; secondly, the electrode can only qualitatively judge the blockage of a certain area, but cannot evaluate the position of a certain point in the overall system in real time. Level of clogging degree; Finally, because the constructed wetland filler is not uniformly distributed in the horizontal and vertical directions, and the difference between the conductivity of the material itself and the background value will seriously interfere with the final test results
This method requires the operator to be very familiar with the material structure of the target wetland, and the location of the points is clear and accurate, which is a big obstacle in the actual operation

Method used

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  • A method and system for detecting clogging and short flow in subsurface constructed wetland
  • A method and system for detecting clogging and short flow in subsurface constructed wetland
  • A method and system for detecting clogging and short flow in subsurface constructed wetland

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Embodiment 1

[0030] A method for detecting blockage and short flow in subsurface constructed wetlands, the specific detection steps are as follows:

[0031] Set the detection points, and arrange the upper and lower layered points in the selected constructed wetland area, such as figure 1 As shown, the 3D model of the wetland must first be obtained, that is, the length, width and height of the wetland as a whole. The 3D model has the same proportion as the wetland. The 3D model can be obtained from the existing database. Corresponding data information will be stored in the database of the unit, and the selected constructed wetland area can also be measured to obtain approximate 3D model data parameters, such as figure 1 As shown, according to the height of the 3D model, it is divided into 3 layers. Each layer adopts the same grid for point distribution. Each grid point represents a detection point. The area of ​​each grid point is based on the overall area of ​​each layer. For division, th...

Embodiment 2

[0038] A method for detecting blockage and short flow in subsurface constructed wetlands, the specific detection steps are as follows:

[0039] Set the detection points, and arrange the upper and lower layered points in the selected constructed wetland area, such as figure 1 As shown, the 3D model of the wetland must first be obtained, that is, the length, width and height of the wetland as a whole. The 3D model has the same proportion as the wetland. The 3D model can be obtained from the existing database. Corresponding data information will be stored in the database of the unit, and the selected constructed wetland area can also be measured to obtain approximate 3D model data parameters, such as figure 2 As shown, each layer has a total of 12 grids, which are divided into four areas A, B, C and D by row. Each grid point is a detection point. Each detection point in the 3D model is consistent with the actual wetland One-to-one correspondence of areas, according to the area ...

Embodiment 3

[0066] A subsurface constructed wetland blockage and short flow detection system, including a wetland detection distribution unit, a plurality of temperature sensors, a data conversion unit, a data transmission unit, a receiving analysis module and a variable temperature water flow control device;

[0067] The wetland detection and distribution unit includes a wetland model acquisition module, a regional stratification module and a single layer distribution module, the wetland model acquisition module is used to obtain a three-dimensional model of the wetland, and the regional stratification module is used to carry out the three-dimensional model of the wetland The upper and lower layers, the single-layer distribution module includes a single-layer distribution area calculation module and a single-layer distribution quantity division module, the single-layer distribution area calculation module calculates the total area of ​​each layer, and calculates the single distribution are...

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Abstract

The invention discloses a method and system for detecting blockage and short flow in subsurface artificial wetlands. First, a large number of temperature sensors are arranged in the wetland matrix to form a sensor array, and the wetland is irrigated with variable temperature. The difference of each temperature node change at each point can be used to obtain the blockage of each part of the matrix. The advantage of the present invention is that no tracer substances are added to the water, and no impact is caused to the environment and the constructed wetland itself.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to a method and system for detecting blockage and short flow in an underflow constructed wetland. Background technique [0002] As a sewage ecological treatment process, constructed wetland has been widely used in domestic sewage, storm runoff, tail water treatment of sewage treatment plants, and river and lake treatment due to its advantages of low investment, low energy consumption, good effect, and simple maintenance and management. Pollution Prevention. After the constructed wetland has been in operation for a period of time, through the erosion of the wetland substrate and the accumulation of clogged substances, habitual flow passages will be formed. The flow resistance of water flow in these passages will be relatively small, which will significantly affect the water flow of other parts of the substrate. At the same time, part of the matrix area w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/22C02F3/32
CPCC02F3/32G01K7/22
Inventor 王启烁周紫阳韦翠珍王彦博王成
Owner INST OF AQUATIC LIFE ACAD SINICA
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