KR101671917B1 - Optimal design and operation method of the constructed wetland for agricultural non-point pollutant treatment at reservoir entrance - Google Patents

Abstract

The present invention relates to a method for designing and managing an artificial wetland for treatment of non-point source pollution to treat the non-point source pollution in a reservoir, provided to construct a water purification model in the artificial wetland by simulating water purification using water purification plants and the structure of the artificial wetland. Provided is the method for designing and managing an artificial wetland for treatment of non-point source pollution to treat the non-point source pollution in a reservoir which comprises: a first step of constructing and managing a wetland so as to stimulate combination of water purification plants; a second step of utilizing CFD so as to simulate the structure of the artificial wetland; and a third step of constructing and managing the artificial wetland using conditions for water purification obtained from the first and the second steps, and therefore reduces pollutants in the reservoir using the conditions obtained by simulating a biological water purification capacity and the structure of the artificial wetland so as to improve the water quality of the reservoir, thereby being able to reduce waste of budget, provide a model having a water purification capacity, purify water, and enables growth of water purification plants and thus having effects of water purification and additional profit-making, preventing sporadic vegetation of the water purification plants using a vegetation mat and a buoying means and facilitating the smooth vegetation and growth of the water purification plants when the water purification plants grow.

Description

Technical Field [0001] The present invention relates to a method for designing and operating a wetland for agricultural nonpoint pollution,

The present invention relates to a method for designing and operating an artificial wetland for agricultural non-point pollution treatment for reservoir-inflow agricultural non-point pollution treatment in order to simulate the water quality purification of water purification plants and simulate the structure of the artificial wetlands, .

Due to the development of industry and urbanization, the increase of pollutants due to the improvement of living standards and the increase of population, pollution of the reservoir near the city is worried due to the spread of water pollution. There is a growing demand for residents to improve the welfare of people's welfare, including the provision of water-related facilities.

Next, pollution sources by the urbanization and development projects around the reservoir are continuously increased, and the quality of water is greatly lowered due to the increase in the amount of discharge of living water, wastewater and sewage treatment plant and non-point pollution source due to population increase, The Ministry of Environment has designated it as a key management reservoir to solve the civil complaints caused by the water pollution of the reservoir, to restore the water quality and the ecosystem restoration, and to play the role of tourism and leisure. (Water Quality and Water Ecosystem Preservation Article 31 (2) of the Act on the Enforcement of the Act (12.2.1), 8.2)

On the other hand, various prior arts have been proposed from three viewpoints.

Prior art that has been developed by improving the shape of a wetland includes Korean Patent No. 10-01175305 entitled " Eco-friendly wetland system for treatment of nonpoint pollutants ", Korean Patent No. 10-0444972 " Korean Patent No. 10-0710859 entitled "Built-in wetland system for treatment of non-point pollutants ", Korean Patent No. 10-0668598," Artificial wetland system using plant and biological purification method Wetland structure and purification method therefor ", Korean Patent No. 10-0561171," Nonmotor waterway type artificial wetland, and natural type river purification method using the same "were proposed.

Conventional techniques for wetland materials include Korean Patent No. 10-0558067 entitled " Method for Purifying Water Quality through a Lotus Flower, "Korean Patent Laid-Open No. 10-2010-0011699," &Quot; Patent No. 10-039891, " a cultivation method for water-borne differentiation "

As a prior art in terms of wetland management, Korean Patent Publication No. 10-2010-0128611 entitled "Weir for Wetland Level Control ", Korean Registered Patent No. 10-1034132" Multifunctional Ecological Purification Korean Patent Laid-Open No. 10-2014-0046578 entitled "Sub-type Water Purification System ", Korea Registered Utility Model No. 20-0321615" Underwater Submergence ", Korean Patent No. 10-0990954 " Korean Patent No. 10-1012414 "A vegetation mat for aquatic plants in which a porous inorganic adsorbent and a porous filter medium are fractionally packed ".

However, the above-mentioned prior arts have applied only a description of improvements to any one part for water quality purification, and therefore, there is an urgent need for an operational scheme that can be applied from planning to final application for water quality improvement of reservoir inflow river water It is true.

In order to solve the above problems, the method for designing and operating a wetland for agricultural non-point pollution for the treatment of non-point pollution in the reservoir of the present invention is performed by simulating the biological water quality and the structure for purification of water in the reservoir The purpose of this study is to provide a method of designing and operating a wetland for agricultural non - point pollution for the treatment of non - point pollution in the reservoir, which can shorten the construction period, reduce the construction cost, and present a model of water purification capacity.

It is another object of the present invention to provide a method for purification of water quality and purification of water quality plants.

The present invention can reduce the waste of the budget by performing the water quality purification of the artificial wetland by using the conditions obtained through the simulation test of the biological water purification ability and structure using the water purification plant, A model can be presented.

In addition to the purification of water quality, the purification of water quality is carried out together with the vegetation of the water purification plant, so that the effect of water purification and incidental profit creation effect can be obtained.

And water purification plant It is a useful invention which can facilitate the smooth vegetation and cultivation of the water purification plant while preventing the sporadic vegetation of the water purification plant by using vegetation mat and buoyancy means in vegetation.

1 is a block diagram illustrating an operating method of the present invention.
Fig. 2 is an exemplary view showing the operation of a wetland in the first step of the present invention; Fig.
3 is a front view showing the ultrasonic level meter in the first step of the present invention.
4 is a plan view showing a first step of the present invention;
5 is an exemplary view showing a state in which the second step of the present invention is performed.
FIG. 6 is a state diagram showing a state where a water quality purification plant is operated in the third step of the present invention. FIG.
FIG. 7 is a perspective view showing a vegetation of a vegetation mat according to the present invention. FIG.
8 is a perspective view showing a vegetation mat in the present invention.
Fig. 9 is a sectional view of Fig. 8; Fig.
10 is a perspective view showing another embodiment of the vegetation mat in the present invention.
11 is a perspective view showing buoyancy means in the present invention.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a method of installing and operating a wetland (a first step) for searching for water quality purification conditions by applying various planting conditions as shown in FIG. 1,

(2) a model construction and test operation of the water purification condition and the geomorphic structure obtained in the first step with computational fluid dynamics (CFD)

And installing and operating a facility to which the conditions for purifying the water of the wetland obtained through the first and second steps are applied (step 3).

Step 1

As described above, this step is to find conditions for water quality purification using various vegetation plants.

Therefore, in the first step, as shown in FIG. 2, a plurality of wetland cells are formed in a multistage form, and a plurality of wetlands 10 are installed so as to be able to receive and move the river inflow water stream, Simulate the combination.

More specifically, the plurality of wetlands 10 in the present invention are composed of first, second, third, fourth and fifth wetlands 1, 2, 3, 4 and 5 as in Figures 2 to 3 , And each wetland has a structure in which four wetland cells are formed in a multi-stage form.

That is, the first wet paper 1 is the first wet paper web 1a to the first wet paper web 1d,

The second wetland 2 is connected to the second wetland cell 2a through the second wetland cell 2d,

The third wet paper 3 is fed into the third wet paper cells 3a through 3d,

The fourth wetland 4 is connected to the 4a wetland cell 4a through the 4d wetland cell 4d,

The fifth wet paper 5 is composed of the 5a wet paper cells 5a through the 5d wet paper cells 5d. Each wet paper cell has the same size but is formed in a multistage form, .

Particularly, in this step, the purification ability is monitored by using various kinds of water purification plants. In order to check the purification ability depending on the residence time of the river inflow water flowing into each wet cell, Or to determine the cleaning ability of the water by changing the density of the water purification plant.

That is, in the wetland cells 1a to 1d of the first wetland 1, which is the first serial group, the paddy rice was formed as a general density distribution as a water quality purification plant. At this time, the depth of the wetland cells and the density of the water- Apply planned depth and density.

In the second and third wet paper cells 2a and 2b of the second wet paper web 2 as the second serial group, the white rice is planted as the water quality purification plant, and the second and third wet paper cells 2c and 2d are coated with red At this time, the depth of the water purification plant is configured to be deeper than that of the first wetland 1, thereby extending the residence time of the water introduced into each wetland cell.

The third wetland (3), which is the third serial boat, applies the same water depth as the first wetland (1), planting the water purification plant only in the white rice paddies, and the planting density in the first and second wetlands The third c wetland cell 3c maintains a density of 50% in the third 3a wetland cell 3b and the 150% density distribution in the third 3b wetland cell 3b, 3d) is formed so as to maintain a plant material density of 100%.

In addition, reeds are planted in the wetland cells 1a to 1d of the fourth wetland 4, and the water depth and density are applied in the same manner as the first wetland 1.

In the fifth wetland cell 5a of the fifth wetland 5, a reed is placed in the reed, the 5b and 5c wetland cells 5b and 5c and a reed in the 5d wetland cell 5d. 1 wetland (1).

Here, the above-mentioned water purification plant was planted (reference food quantity) per 1 m 2 in each wetland cell having an area of 100 m 2, and the depth of the average water depth was 0.5 m. At this time, In the case of the formed third wet paper 3, the water depth of 1 m is maintained.

On the other hand, in the inlet side and the outlet side of the first, second, third, fourth and fifth wetlands 1, 2, 3, 4 and 5 constituting the wet paper 10 described above, An ultrasonic level meter 20 is installed to measure the level of water at the inlet and outlet sides and data of the level of each of the wet cell cells is measured using the measured level, and then the water level measured by each ultrasonic level meter 20 The water level of the wetland cell existing in each wetland can be adjusted.

At this time, the water level control through the ultrasonic level meter 20 can be performed by controlling the water level pump P for supplying the river inflow water to the respective wetlands.

3, the ultrasonic level meter 20 includes a post 21 extending in the vertical direction on the ground, a length adjusting bar 22 provided on the post 21 so as to be variable in length, An ultrasonic level sensor 23 formed at one end of the control bar 22 for sensing the water level by ultrasonic waves is formed and the post 21 is provided with a control box 24 for controlling the ultrasonic level sensor 23, And a solar module 25 for supplying power using solar energy. Thus, the position of the ultrasonic level sensor 23 can be adjusted by using the length adjusting bar 22 according to the geographical situation.

The water level adjustment for each wetland cell through the ultrasonic level meter 20 is performed within the range of ± 2 cm based on the planned water level and the water level measurement through the ultrasonic level meter 20 is performed once / .

In other words, if the water level drops by 2 cm on the basis of the planned water level, the amount of the river inflow water flowing into the wet cell contained in each wetland becomes small, so that the water level pump P is controlled to be operated, The pump P is operated to stop the water level pump P from operating.

The inlet side of the first, second, third, fourth and fifth wetlands (1, 2, 3, 4, 5) constituting the wetland 10 and the inflow side of the reservoir At the discharge side, each reservoir has a space for collecting river water, so that the administrator can collect the samples and analyze the collected data to monitor the ability to purify the reservoir inflow water in each wetland.

Here, it is preferable that the area for collecting the sample is formed at the same place periodically after attaching the marking paper to a specific position rather than sporadically spreading over the entire area of the wet paper 10. At this time, After sampling, test for TN, NO ₃ -N, NO ₂ -N, NH ₄ -N, TP, PO ₄ -P, Chl- a , TOC, BOD and COD.

Also, monitor inflow flow rate and discharge flow rate three times a week, two times a week water temperature and pH, DO, turbidity monitoring, bi-weekly water quality purification Plant growth rate (quantity and diameter, etc.)

In addition, the area around the wetland 10 is the water temperature at least once a month, pH, D0, _{turbidity, TN, NO 3 -N, NO} 2 -N, NH 4 -N, TP, PO 4 -P, Chl- a, TOC, BOD and COD are monitored.

Therefore, in this step, in the first wetland 1 and the fourth wetland 4, it is possible to monitor the difference in the purification rate of the water flowing into the reservoir depending on the type of the water purification plant.

In other words, it is possible to compare and analyze the samples taken from the inlet side of the wetland (1, 4) for the inflow of the reservoir inflow river water and the outlet side of the wetland cells contained in each wetland, It is possible to digitize the water purification rate depending on the type of the water purification plant.

In addition, the first, fourth, and fifth wetlands (1, 4, 5) can monitor the water purification ability depending on the combination of the water purification plants.

In other words, it is possible to directly control the water purification ability through the samples collected at the inlet and outlet sides of the reservoir inflow water streams of the fourth wetland (4) planted only with reed as a water quality purification plant and the first wetland (2) The data obtained from the first, fourth and fifth wetlands (1, 4 and 5) can be used to compare the water quality with the amount of planted kernels in addition to the above data, It is possible to calculate data by comparing and analyzing the water purification ability when planted.

In the case of the first and second wetlands 1 and 2, it is possible to directly compare the ability of the respective wetlands to regulate the water quality through the control of the water depth. In the case of the first wetland 1, The situation can be replayed and the water purification capacity can be digitized during the rainy season.

Meanwhile, the present invention aims to compare and analyze the reed, which is a water purification plant having excellent water purification ability, as well as a general water purification plant, as well as a purification function of water quality and vegetation with high commerciality.

Therefore, it is possible to analyze the variation of the water surface coverage rate according to the planting density of the water purification plant through the first, second and third wetlands (1, 2, 3) in this step. Can be analyzed.

As described above, the first step is performed for 3 to 6 months and motoring is performed, and then the data is calculated.

Step 2

In this step, the arrangement and topographical structure of the water purification plant having the water purification condition obtained in the first step are constructed by CFD (Computational Fluid Dynamics, hereinafter referred to as "CFD"), It is a trial operation phase for building a wetland facility.

Therefore, in this step, the model should be constructed to reflect the geographical characteristics of the reservoir. In particular, if there is a quadrant where water flow does not occur, the quadrant should be modified to form a structure free from occurrence of quadrants.

FIG. 5 is a graphical representation of a CFD. It is assumed that a virtual wetland is constructed on the basis of a view of a reservoir inlet. When the design flow is analyzed, the behavior of the fluid in the virtual wetland is analyzed. You can finalize this step by revising the CFD simulation again.

Step 3

This step is a step for constructing and operating an actual wetland based on the data obtained by monitoring through the first and second steps described above.

Therefore, in the second stage, the construction work constructed through the CFD simulation is carried out, and the water purification plant is arranged for purification of the river inflow water.

This step is finally applied after monitoring the water quality purification power through the test operation for 2 to 4 months after constructing the constructed wetland through steps 1 and 2 above.

Here, the present invention can simultaneously carry out the cultivation of the yeast excellent in commerciality, in addition to the purpose of purifying the water quality of the reservoir influent river water.

However, the above-described kite has excellent water purification ability, but it has good fertility and sporadic growth, which not only deteriorates the surrounding environment, but it is very difficult to cultivate it later.

Accordingly, in the third step, the seed of the water purification plant, which is a water purification plant, is planted in a vegetation mat (30) composed of any one of a mat shape as shown in FIG. 7 or a roll shape as shown in FIG. 8, The buoyant means 40 for floating the buoyancy means 40 is configured to be managed in units of one module, so that sporadic propagation is suppressed and the buoyancy means 40 can be easily cultivated.

6 to 10, the vegetation mat 30 may include a soil layer 31b, a biodegradable polymeric fiber (PLA) (hereinafter referred to as "PLA") between the mesh tops 31a, A vegetation cell 31 composed of a partition layer 31c and a vegetation layer 31d made of a polylactic acid or a partition layer 31c made of PLA between a mesh surface layer 31a and a clay layer 31b made of PLA is used, A seed and a vegetation layer 32 are formed on the upper side of the partition layer 31b and a filtration layer 33 is formed on the lower side to accommodate filtration members and clay.

Here, if the vegetation layer 31 does not include the vegetation layer 31c, a porthole 34 may be further formed on the surface thereof so that the water purification plant can be planted.

The vegetation mat 30 having the above-described structure can smoothly perform the vegetation of the water purification plant, and is made of an environmentally friendly material to prevent pollution of the river water flowing into the reservoir and to modulate the water purification plant, After improving the problem of sporadic vegetation, the administrator can easily cultivate the water purification plant.

On the other hand, the buoyancy means 40 described above is used to float the vegetation mat 30.

In other words, the construction wetland in this stage is structured so that the flow of the river water flowing in the reservoir is smooth, and in particular, the depth of the seed or vegetation layer of the water purification plant is structurally locked.

When the water purification plant is planted in such a state, the vegetation of the water purification plant is not smoothly performed, and the water purification ability is lowered. Therefore, the buoyancy means 40 described above is used.

11, the buoyancy means 40 includes a buoyant body 41 extending in the vertical direction and made of a material capable of filling a filler material therein, an inlet port 42 for filling the filler material in the buoyant body 41, A discharge port 43 for discharging the filler material filled in the buoyant body 41 and a confirmation window 44 for visually confirming the amount of the filler material filled in the buoyant body 41 and the buoyant body 41 And a water level adjusting graduation part 45 for measuring the amount of the filler filled in the inside of the water level adjusting part.

Particularly, the buoyancy means 40 described above needs to adjust the amount of water immersed in the water according to the growth of the water purification plant, which may be insufficient only by the water level control scale unit 45.

Accordingly, in the present invention, as the water purification plant grows for each vegetation period, it further includes a marking unit (not shown in the drawings) that can control the buoyancy amount for each vegetation period so that the user can control the buoyancy of the buoyancy means 40 .

The buoyancy means 40 having such a structure may be configured such that when the first vegetation mat 30 is floated, a filler is formed in the buoyant body 41 so as to form a high buoyancy amount, Can be adjusted to purify the river water flowing into the reservoir and simultaneously satisfy the vegetation of the water purification plant.

Particularly, the buoyancy means 40 described above can be implemented using a connecting member 50 such as a wire when connecting to the vegetation mat 30. In order to easily mount the connecting member 50, A length adjusting means 60 such as a turnbuckle may be further provided.

Here, the buoyancy means (40) is not particularly limited, but it is preferable that the vegetation mat (30) is installed at four corners so as to maintain the structural stability.

As described above, the present invention can easily perform the planting of the water purification plant through the above-mentioned steps, as well as the biological purification and structural elements during purification of the river inflow water stream, The cost of purification can be greatly reduced, and the water purification capacity can be further improved to provide water quality modeling, as well as to improve the water quality of reservoir inflow water and the health of the ecosystem.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: Wetlands
1: 1st wetland
1a: No. 1a wetland cell 1b: No. 1b wetland cell 1c: No. 1c wetland cell
1d: 1st damping cell 1e: 1st damping cell
2: second wetland
2a: a wetland cell 2b: a 2b wetland cell 2c: a 2c wetland cell
2d: 2nd damping cell 2e: 2nde damping cell
3: Third wetland
3a: Wet 3a wetland cell 3b: 3b wetland cell 3c: 3c wetland cell
3d: the third damping cell 3e: the third damping cell
4: Fourth wetland
4a: a 4a wet cell cell 4b: a 4b wet cell cell 4c: a 4c wet cell cell
4d: fourth damping cell 4e: fourth damping cell
5: Fifth Wetland
5a: Weta 5a wet cell 5b: 5b wet cell 5c: 5c wet cell
5d: the 5th wet paper cell 5e: the 5e wet paper cell
20: Ultrasonic water level meter
21: Post 22: Distance control bar 23: Ultrasonic level sensor 24: Control box
25: Solar module
30: Vegetation mat
31: vegetation wrap
31a: mesh surface body 31b: partition layer 31c: vegetation layer
32: seed and vegetation layer
33: filtration layer
34: Vegetation pot
40: Buoyancy means
41: Buoyant body 42: Inlet port 43: Outlet port 44: Confirmation window
45: Water level adjustment scale part
50:
60: length adjusting means

Claims (8)

In order to elucidate the conditions and design factors of the water quality improvement facility, it is necessary to form a number of wetlands composed of wetland cells partitioned into a multi-stage structure in the reservoir-inflowed river bed or adjacent watersheds to improve water quality, , Water depth adjustment for adjusting the residence time, monitoring of water quality improvement rate in each wetland using the wetland formed by different density of planting, and calculating water quality purification condition Stage 1;
A second step of constructing a model using Computational Fluid Dynamics (CFD) in a zone for applying the data obtained through the first step and planning a structure and a plant location minimizing the water bodies;
A method for improving the water quality of the agricultural non-point pollution source water for improving the quality of water based on the data in the first step and the data in the second step, And a third stage of operation,
In the third step, the water purification plant in the third step may be constructed so that the vegetation mat containing the seed or the vegetation layer is floated by floating the water purification plant while adjusting the height at which the water purification plant is submerged in the reservoir inflow water However,
The buoyant body,
And an inflow port formed at one side of the buoyant body for injecting the filler into the buoyant body, and an inlet formed at one side of the buoyant body and filled in the buoyant body A confirmation window for visually confirming the discharge port for discharging the filler material and the filler material which is formed in the direction in which the buoyant body is extended and filled in the buoyant body and the amount of the filler material formed on the side of the confirmation window, And a water level control graduation part for the water level,
Wherein the vegetation mat and the buoyancy means are coupled through a connecting member and the connecting member further comprises a length adjusting means for adjusting the length of the connecting member. Design and operation of wetland.
The method of claim 1, wherein the plurality of wetlands in the first stage comprises first, second, third, fourth, and fifth wetlands,
The first wetland is formed as a first series of ship with only the planting material formed to form the intended density and depth,
The second wetland is a second serialized wetland, in which each of the wetland cells is formed with a puddle and a puddle, which is deeper than the first wetland,
The third wetland constitutes the third series of wetland cells with the same water depth and forms the plant only as a paddy and maintains a density of 50% in the third wetland cell based on the planting density in the first and second wetlands, 3b wet cell cells are maintained at a density of 150%, the third c wet cell cells are formed in open water cells, and the third wet cell cells are formed at a density of 100%
In each wetland cell constituting the fourth wetland, the planting material is formed only in a reed, and the density and depth of the planting material are formed in the same manner as the first wetland,
The fifth wetland is a group of mixed cultivated plants, in which reed, pearl, pearl, pearl and reed are sequentially planted in the respective wetland cells, the water depth and density are formed in the same manner as the first wetland, and the effluent water discharged from each wetland is monitored Design and operation of wetland for agricultural non - point pollution treatment for reservoir inflow agriculture nonpoint pollution treatment characterized by comparison.
[3] The method according to claim 1, wherein, in the first step, the inflow amount of the reservoir inflow river water flowing into each wetland is checked and the inflow port where the reservoir inflow water flows into each wetland to maintain the planned water level, An ultrasonic level sensor formed at one end of the distance control bar and a distance control bar provided to extend horizontally in the post so as to measure a water level through the ultrasonic level sensor, A method of designing and operating an artificial wetland for agricultural nonpoint pollution treatment for reservoir inflow agriculture nonpoint pollution treatment characterized by forming an ultrasonic level meter comprising a control box for controlling and a solar module for supplying power formed on the upper side of the post.
The method according to claim 1, wherein the method for monitoring the water quality of each wetland in the first step comprises the steps of: analyzing a sample, which is a reservoir inflow river taken at the same location, Design and operation method of wetland for agricultural non - point pollution.
delete The vegetation mat according to claim 1, wherein the vegetation mat is formed by forming a vegetation layer or a partition layer made of a loam soil layer, a biodegradable polymer fiber yarn (PLA) between the outer surface of the mesh net, Layer or biodegradable polylactic acid (PLA) is formed into a roll or matt form, and a horizontal partition is formed to form a seed and a vegetation layer on the upper side And a filtration layer in which the filtration means and the clay are contained is formed on the lower side, and a method of designing and operating a wetland for agricultural nonpoint pollution for the treatment of pollutant pollution in the reservoir inflow agriculture. delete delete

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