KR20200141125A - Water treatment system of artificial wetland - Google Patents

Abstract

The present invention relates to a water treatment system of artificial wetland, which comprises: a sedimentation basin (100) in which a soil-free vegetation base material (1) is floatingly installed in the polluted water, and pollutants contained in the polluted water are filtered by the roots of aquatic plants or are settled and removed by sedimentation action; a vegetation contact filtration oxidation basin (200) in which the soil-free vegetation base material (1) is installed on a bottom surface, and pollutants are filtered while the polluted water transferred from the sedimentation basin (100) flows to the surface of the soil-free vegetation base material (1); an inclined centripetal wetland (300) including a storage unit (310) in which the polluted water transferred from the vegetation contact filtration oxidation basin (200) is stored, a filtration module (320) in which upper and lower surfaces are sealed and the upper surface is formed in an inclined shape that is lowered in the centripetal direction, and as the polluted water transferred from the storage unit (310) flows from an outer wall to an inner wall, the pollutants contained in the polluted water are filtered to generate treated water, a discharge unit (330) in which an upper end is opened and the treated water introduced in the centripetal direction from the filtration module (320) is discharged to the upper part, and a discharge pond (340) in which the treated water discharged to the upper part of the discharge unit (330) is stored; and a discharge pipe (500) for discharging the treated water stored in the discharge pond (340).

Description

Water treatment system of artificial wetland

The present invention expands the flow range of contaminated water by dispersing in the contaminated water in the centripetal direction, accelerating the flow rate of contaminated water according to the internal flow of contaminated water to eliminate the possibility of clogging pores in the filtration module, and The present invention relates to an artificial wetland water treatment system capable of maximizing the removal efficiency of pollutants contained in polluted water by increasing the difference in flow velocity between flowing water to increase the efficiency of separating pollutants.

In general, as a factor that adversely affects water resources, water pollutants are classified into point pollutants and nonpoint pollutants, and are controlled using different treatment methods.

First of all, point pollutants can be easily treated by constructing a sewage treatment plant or a wastewater treatment plant as a source of contaminated and limited discharge points such as household sewage and industrial wastewater discharged from residential areas or industries.

Next, non-point pollutants are pollutants that are mainly discharged along with surface runoff when it rains. Fertilizers or pesticides sprayed on farmland, soil contaminants, livestock effluents, traffic pollutants, dust and garbage in urban areas, natural buildings Plant residues and air pollutants that have fallen on the surface are mixed with rainwater and become contaminated water.

Since non-point pollutants are mainly generated during rainfall, the difference in daily and seasonal emissions is large, it is difficult to predict and quantify, and it is highly affected by meteorological conditions, geological conditions, etc., where artificial control is difficult. Therefore, the emission standard is not established systematically.

Here, treatment methods to reduce non-point pollutants include artificial wetlands, vegetation filters, reservoirs, and physical filtration facilities (filtration tanks, infiltration tanks, porosity packaging), etc., and studies for scientific verification of removal effects have been conducted in a wide variety. And various treatment devices and techniques have been developed and commercialized.

Among them, as a method of reducing non-point pollutants using an ecologically healthy natural purification technique, an artificial wetland treatment method is emerging as an alternative.

Artificial wetlands are capable of treating non-point pollutants or controlling rainfall runoff.Non-point pollutants by artificially improving the purification capacity of wetlands in natural conditions such as precipitation, filtration, adsorption, microbial decomposition, and purification by vegetation plants. As a facility to reduce the amount of water quality, water quality management using artificial wetlands has an economic advantage that treatment costs are low, and the treatment method itself uses a part of the natural ecosystem and removes pollutants efficiently. Research applied to water quality improvement is being conducted a lot both at home and abroad.

As a technology for such an artificial wetland, it relates to a high-efficiency complex artificial wetland system of Korean Patent Registration No. 10-1815246, which is formed adjacent to a river or sewage and wastewater treatment facility and is relatively upstream to precipitate impurities contained in contaminated water. A sedimentation site formed on the side; A wetland portion in which aquatic plants are planted to purify water quality by precipitation of particles, destruction of pathogenic substances, absorption and decomposition of nutrients while flowing the impurity-treated water flowing out of the settled area; A flow rate control tank for vertical underground flow provided to allow drainage to a downstream side when the purified water purified by the wetland portion is stored at a certain level while being stored therein; Purified water supplied by the connection and installation of the vertical underground flow control tank is discharged by a spray method, and the floor is filled with a porous filter material so that aquatic plants can be planted to adsorb pollutants, and then drainage is possible. A vertical underground flow wetland unit provided to increase the oxygen transfer rate to adsorb and decompose pollutants of a high concentration to be treated by oxidation and decomposition; A horizontal underground flow flow rate control tank connected to the vertical underground flow wetland unit and provided to be drained to a downstream side when stored at a certain level while the discharged water adsorbed with high concentration of pollutants is stored therein; A horizontal provided to remove phosphorus by horizontally flowing the discharged water discharged from the horizontal underground flow flow control tank and flow inflow, and to enable denitrification of nitrified nitrogen by microorganisms through the horizontal underground flow flow control tank A high-efficiency complex artificial wetland system including an underground flow wetland unit is disclosed.

In addition, the vertical underground flow flow rate control tank installed on the upper part of the vertical underground flow wetland part is provided to store purified water flowing out by communicating the other end of the vertical underground flow connection pipe connected to the wetland part with the inside. A flow rate control storage tank, a vertical underground flow position stop plate horizontally provided with one end fixed to the inner front surface of the vertical underground flow flow rate control storage tank and the other end protruding, and the vertical underground flow flow rate control storage tank A vertical underground flow flexible pipe provided to be located inside the vertical underground flow flow control reservoir by connecting one end to the vertical underground flow buoyant discharge pipe piped at the bottom of the inner rear, and the other end of the vertical underground flow flexible pipe at one side Vertical underground flow provided to be able to communicate with each other by being connected to the outer circumference, and to be supported on the bottom of the plate for stopping the vertical underground flow by forming a vertical underground flow inlet for inflow of purified water in the upper part, rising by buoyancy corresponding to the inflow of purified water It includes a soluble body.

In addition, one end is inserted and fixed through the outer peripheral surface of the other side of the vertical underground flow floating body, and the other end is exposed to the outside, so that the vertical underground flow floating body is raised corresponding to the storage of purified water in the vertical underground flow flow control storage tank. The purified water inlet pipe for vertical underground flow is provided so that the vertical underground flow floating body is immersed by introducing the purified water supported on the bottom of the vertical underground flow position stop plate to the side of the vertical underground flow floating body.

The prior art has a problem in that the site required for wetlands is widened by configuring a discharge pond in which contaminated water is stored and discharged at the rear of the wetland.

In addition, in the prior art, contaminated water flows and filters in one direction, so that the inlet cross-sectional area into which the contaminated water flows is relatively small, and there is no difference in flow velocity between the pores of the porous filter material, so that the pores of the porous filter material can be blocked by particulate matter and microbial membrane. In addition, there is a problem in that the removal efficiency of pollutants contained in the contaminated water decreases, the water passing capacity (processing flow rate) of the contaminated water decreases, and the maintenance efficiency decreases.

Korean Patent Registration No. 10-1815246 (2017.12.28)

The present invention was conceived to solve the above problems, and an object of the present invention is to expand the flow range of contaminated water by distributing and introducing contaminated water in a centripetal direction, and to increase the flow rate of contaminated water according to the internal flow of contaminated water. Artificial wetland water treatment that can maximize the efficiency of removing contaminants contained in contaminated water by accelerating to eliminate the possibility of clogging pores in the filtration module, and increasing the efficiency of separating contaminants by increasing the difference in flow velocity between the internal flow of contaminated water. To provide a system.

In addition, another object of the present invention is to provide an artificial wetland water treatment system capable of reducing the site required for wetlands by integrally configuring the discharge pond from which contaminated water is stored and discharged to the upper side of the filtration module without putting it at the rear.

In the artificial wetland water treatment system according to the present invention, soil-free vegetation base material (1`) is installed floating in contaminated water, and contaminants contained in contaminated water are filtered by the roots of aquatic plants or settled and removed by sedimentation. Settling basin 100; A soil-free vegetation base material (1) is installed on the bottom surface, and the contaminated water transferred from the sedimentation site (100) flows to the surface of the soil-free vegetation base material (1) while pollutants are filtered through vegetation contact filtration ( 200); A storage unit 310 in which contaminated water transferred from the vegetation contact filtration oxidation paper 200 is stored, and the top and bottom are sealed and the top surface is formed in an inclined shape that decreases toward the centripetal direction, and the contaminated water transferred from the storage unit 310 A filtration module 320 that generates treated water by filtering contaminants contained in the contaminated water while flowing from the outer wall to the inner wall, and the upper end is opened and the treated water introduced from the filtration module 320 in the centripetal direction is discharged to the top. An inclined centripetal wetland 300 including a discharge part 330 and a discharge pond 340 in which the treated water discharged to the upper part of the discharge part 330 is stored; And a discharge pipe 500 for discharging the treated water stored in the discharge pond 340.

In addition, the filtration module 320 includes a plurality of filtration units whose porosity increases from the outer wall to the inner wall.

In addition, the filtration module 320 includes a first filtering unit 321 for accommodating the biocarrier 600 therein; A second filtering unit 322 accommodating a filler 700 coated with a microbial coating solution therein; And a third filtering unit 323 accommodating the biostone ball 800 therein.

In addition, the filtration module 320 is formed in a ring shape.

In addition, the filtration module 320 is sealed by sequentially installing a water barrier 324 and the soil-free vegetation base material 1 on the upper surface.

In addition, the inclined centripetal wetland 300 further includes a filtering frame 350 installed at the discharge unit 330 and filled with a biostone ball 800.

In addition, the inclined centripetal wetland 300 is between the storage unit 310, the first filtering unit 321, the second filtering unit 322, the third filtering unit 323 and the discharge unit 330 Each further includes a partition wall 360 installed.

Accordingly, the artificial wetland water treatment system according to the present invention expands the flow range of contaminated water by distributing and introducing contaminated water in the centripetal direction, and accelerating the flow rate of contaminated water according to the flow of contaminated water to close the pores of the filtration module. There is an effect of maximizing the efficiency of removing contaminants contained in contaminated water by eliminating the possibility and increasing the difference in flow velocity between the internal flow of contaminated water to increase the efficiency of separating contaminants.

In addition, the artificial wetland water treatment system according to the present invention has the advantage of reducing the amount of land required for wetlands by not placing the discharge pond from which contaminated water is stored and discharged at the rear, but integrally with the upper side of the filtration module.

1 is a cross-sectional view showing a soil-free vegetation base material according to Example 1 of the present invention.
Figure 2 is a cross-sectional view showing a soil-free vegetation base material according to Example 2 of the present invention.
Figure 3 is a cross-sectional view showing an artificial wetland water treatment system according to the present invention.
Figure 4 is a cross-sectional view showing an inclined centripetal wetland according to the present invention.
5 to 6 are plan views showing the flow direction of the inclined centripetal wetland according to the present invention.
Figure 7a is a cross-sectional view showing an example of the vegetation channel according to the present invention.
Figure 7b is a cross-sectional view showing another example of the vegetation channel according to the present invention.
Figure 7c is a longitudinal sectional view showing another example of a vegetation channel according to the present invention.
Figure 7d is a cross-sectional view showing another example of the vegetation channel according to the present invention.
Figure 8 is a plan view showing the vegetation contact filtration oxidized paper according to the present invention.
Figure 9 is a schematic diagram showing a slope type gusimhyang wetland according to an example of the present invention.
Figure 10 is a schematic diagram showing a biostone ball according to the present invention.
11 is a cross-sectional view showing a biostone ball according to the present invention.
12 is a state diagram showing a process of decomposing solid organic matter through the pores of the biostone ball according to the present invention.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

Hereinafter, a soil-free vegetation base material according to Example 1 of the present invention will be described.

1 is a cross-sectional view showing a soil-free vegetation base material according to Example 1 of the present invention.

As shown in FIG. 1, the soil-free vegetation base material 1 according to the first embodiment of the present invention includes a vegetation mat 10 and a mesh body 20.

The vegetation mat 10 is a basic body, and a plurality of perforations 11 through which aquatic plants are vegetated are formed through the vertical direction.

At this time, the vegetation mat 10 may be formed in a plate shape and is made of a buoyant material, and may be composed of a synthetic material mat such as PE (polyethylene) or a natural material mat wrapped with a mesh mesh body, A perforated hole 11 for vegetation of aquatic plants is configured, and the vegetation mat 10 replaces the role of soil, and thus it is composed of no soil.

The mesh body 20 surrounds the vegetation mat 10, and one selected from a PVC-coated rhomboid network, a plurality of geogrids, a mesh net, and a net may be used.

In addition, the net body 20 fixes the roots of the aquatic plants vegetated on the vegetation mat 10 to prevent the aquatic plants vegetated on the planting mat 111 from being separated from the planting mat 111 and being lost. It also plays a role.

The surface of the vegetation mat 10 and the perforation 11 are filled with microorganisms to be described later, and the microorganisms may perform a self-cleaning action of biologically decomposing pollutants in water.

Figure 2 is a cross-sectional view showing the soil-free vegetation base material according to Example 2 of the present invention.

As shown in Figure 2, the soil-free vegetation base material (1 ′) according to the second embodiment of the present invention includes a vegetation mat 10, a net 20, a buoyancy material 30.

Since the vegetation mat 10 and the net 20 have been described in the soil-free vegetation base material according to the first embodiment of the present invention, detailed descriptions will be omitted.

The buoyancy material 30 is fixed to the lower surface of the vegetation mat 10 and is made of a buoyant material to enhance the buoyancy of the vegetation mat, and is made of crosslinked polyethylene foam or crosslinked foamed polyolefin foam that is harmless to aquatic organisms. In addition, a number of materials that are harmless to aquatic organisms and excellent in durability, cold resistance, salt resistance, and heat resistance may be used, and the present invention is not limited thereto.

In addition, the buoyancy material 30 may be formed in a square frame shape.

Meanwhile, the vegetation mat 10 and the buoyancy material 30 may be bound to each other by a cable tie surrounding the vegetation mat 10 and the buoyancy material 30.

In addition, as for the soil-free vegetation base material (1`) according to the second embodiment of the present invention, an associate 40 for spawning fish may be installed on the lower surface of the vegetation mat 10.

Hereinafter, an artificial wetland water treatment system according to the present invention will be described.

Figure 3 is a cross-sectional view showing the artificial wetland water treatment system according to the present invention, Figure 4 is a cross-sectional view showing an inclined centripetal wetland according to the present invention, Figures 5 to 6 are flow directions of the inclined centripetal wetland according to the present invention It is a plan view shown.

As shown in FIGS. 3 to 6, the artificial wetland water treatment system according to the present invention includes a settling pond 100, a vegetation contact filtration area 200, and an inclined centripetal direction in which a discharge pond 340 is integrally formed. It includes a wetland 300 and a discharge pipe 500.

The sedimentation site 100 is a pretreatment process, wherein the soil-free vegetation base material (1`) is floatingly installed in contaminated water, flooded into the river due to rainfall or heavy rain, or contained in contaminated water generated in a sewage treatment facility. Contaminants are filtered through the roots of aquatic plants or removed by sedimentation and biological purification of aquatic microorganisms.

At this time, when the soil-free vegetation base material (1`) is installed in the sedimentation site 100, water purification efficiency such as reeds, cattails, moonroot grass, and yellow irises on the soil-free vegetation base material (1`) It is good to plant this good perennial purified plant and mow it regularly.

In addition, in the sedimentation site 100, the roots of aquatic plants formed on the lower side of the soil-free vegetation base material (1`) collide, retard, adhere, and contain particulate organic substances and colloidal substances among the pollutants contained in the contaminated water. Let it agglomerate and settle.

In addition, in the sedimentation site 100, the roots of aquatic plants formed on the lower side of the soil-free vegetation base material 1` play the role of microbial contact media, and contaminants in the water by microorganisms that adhere and proliferate on the roots It also plays the role of biologically decomposing and removing the sulfide.

The vegetation contact filtration oxidation site 200 is a surface flow wetland, the soil-free vegetation base material 1 is installed on the bottom surface, and the contaminated water transferred from the sedimentation site 100 is the soil free vegetation base material 1 As it flows to the surface of, the pollutants are filtered out.

At this time, in order to maximize the contact area of microorganisms contributing to filtration and purification of contaminated water under the soil-free vegetation base material (1), a lower laying material (2) made of gravel and a functional carrier may be installed.

Here, the functional carrier may be an aggregate obtained by molding and firing loess or bottom ash.

In addition, the lower laying material 2 can be impregnated with a microbial coating solution to maximize contamination and water purification efficiency. As micro-animals including microorganisms are inhabited in the lower laying material 2, self-purification and functionality due to biological interactions Organic substances can be decomposed among pollutants contained in contaminated water by calcium ions discharged from the carrier.

At this time, the microbial coating solution is formed by adding at least one of a microbial low molecular strain, a microbial high molecular strain and a microbial denitrifying strain to a liquid base material in which natural cellulose powder, acetate starch, clay powder, and water are mixed, and the microbial low molecular strain is , Lactobacillus genus, saccharomyces genus, Rhodo pseudomonas genus, and Streptomyces genus, wherein the microbial polymer strain includes at least one of mesophilic species and thermophilic species in the genus Bacillus, the The microbial denitrification strain may include at least one of a strain belonging to the genus Cassilla and a strain belonging to the Denitripicon species of the genus Paracocos.

On the other hand, the contaminated water stored in the sedimentation area 100 can be transferred to the vegetation contact filtration oxidation area 200 by a horizontal pipe 900 in horizontal communication between the sedimentation area 100 and the vegetation contact filtration area 200. have.

In addition, various embodiments of the vegetation channel 210, which is a channel through which contaminated water is circulated in the vegetation contact filtration area 200, are as follows.

7A is a cross-sectional view showing an example of a vegetation channel according to the present invention, FIG. 7B is a cross-sectional view showing another example of a vegetation channel according to the present invention, and FIG. 7C is a longitudinal sectional view showing another example of a vegetation channel according to the present invention. 7D is a cross-sectional view showing another example of a vegetation channel according to the present invention.

As shown in FIG. 7A, an example of the vegetation channel 210 is a shielding film 211 buried in the ground, a nonwoven fabric 212 bonded to the upper surface of the shielding film 211, and the nonwoven fabric 212 The soil-free vegetation base material (1) installed on the ground on the upper side of the following bio-stone ball (800) and the lower paving material filled between the non-woven fabric (212) and the soil-free vegetation base material (1) It includes (2).

The shielding film 211 and the nonwoven fabric 212 serve to prevent contaminated water from penetrating into the ground.

The soil-free vegetation base material 1, the biostone ball 800, and the lower laying material 2 serve to filter contaminated water (ie, purify water).

As shown in FIG. 7B, another example of the vegetation canal 210 is a plunge pipe 213 buried in the ground, a grating 214 installed on the ground located above the plunge pipe 214, The biostone ball 800, the non-woven fabric 212, and the soil-free vegetation base material 1 are sequentially installed between the plunge pipe 213 and the grating 214.

The plunge pipe 213 is formed in a U-shape, has an open top surface, and serves to prevent contaminated water from penetrating into the ground.

The grating 214 is formed in a lattice shape, is installed to be opened and closed, and may be made of a steel material.

At this time, by opening and closing the grating 214, the biostone ball 800, the nonwoven fabric 212, and the soil-free vegetation base material 1 can be easily replaced.

As shown in FIGS. 7C to 7D, an example of the vegetation channel 210 is a shielding film 211 buried in the ground, and the soil-free vegetation base installed on the ground above the nonwoven fabric 212 It includes a material (1), a non-woven fabric 212 coupled to the lower surface of the soil-free vegetation base material (1), and a lower wrapping material (2) filled between the non-woven fabric 212 and the shielding film 212 .

The shielding film 211 serves to prevent contaminated water from penetrating into the ground.

The nonwoven fabric 212 serves to keep the soil-free vegetation base material 1 warm.

The lower paving material 2 is made of a plurality of gravel and a functional carrier, and can be impregnated with a microbial coating solution in the voids of the lower paving material 2.

At this time, while micro-animals including microorganisms are inhabited in the lower laying material 2, organic substances can be decomposed among contaminants contained in contaminated water by self-purification by biological interaction and calcium ions discharged from the functional carrier. have.

In addition, the contaminated water transferred from the sediment 100 to the vegetation channel 210 flows to the soil-free vegetation base material 1 and the lower laying material 2, that is, to two locations simultaneously.

Accordingly, the contaminated water transferred from the sedimentation zone 100 to the vegetation channel 210 flows into the soil-free vegetation base material 1 to filter pollutants and at the same time, the lower paving material 2 It flows into the pores, and the contaminants can be filtered by the microorganisms in the pores.

As shown in FIG. 4, the inclined centripetal wetland 300 serves to flow and filter the contaminated water transferred from the vegetation contact filtration oxidation paper 200 in the center direction.

The inclined centripetal wetland 300 includes a storage unit 310, a filtration module 320, a discharge unit 330, and a discharge pond 340.

The storage unit 310 temporarily stores the contaminated water transferred from the vegetation contact filtration oxidation paper 200, and an overflow wall 311 is installed therein.

At this time, the overflow wall 311 allows the contaminated water stored in the storage unit 310 to be evenly distributed in the circumferential direction, and the contaminants included in the contaminated water stored in the storage unit 310 are mixed with each other. As only the contaminated water overflowing from the overflow wall 311 is supplied to the filtration module 320 in the centripetal direction (ie, 360 degrees all directions), the flow rate of the contaminated water is adjusted.

At this time, the soil-free vegetation base material (1`) is floatingly installed in the storage unit 310, and the soil-free vegetation base material (1`) physically and biologically removes contaminants contained in contaminated water. And, it is possible to prevent the occurrence of algae (the storage unit 310 is an open water area) by blocking sunlight in the storage unit 310.

The filtration module 320 is disposed inside the storage unit 310, the upper and lower surfaces are sealed and formed in a structure open from the outer wall to the inner wall, and the contaminated water transferred from the storage unit 310 is in a centripetal direction (ie, 360 degrees omnidirectional) while flowing, it is filtered and converted into treated water.

In addition, the filtration module 320 is provided with a plurality of filtration units whose porosity increases from the outer wall to the inner wall (ie, the central direction), and the contaminated water transferred from the storage unit 310 is It is filtered as it passes through.

In addition, the filtration module 320 is formed as an inclined surface whose upper surface is lowered toward the center, and the soil-free vegetation base material 1 may be fixed to the inclined surface.

Here, when the soil-free vegetation base material (1) is installed in the filtration module 320, the soil-free vegetation base material (1) must be configured to have a thickness of at least 30 cm or more to enable the growth of plants, and From the outside to the inside based on the waterside plant community including the willow, sukreung, water silver grass, and Buddha flowers; A community of purified plants including cattails, yellow irises, triangulum, and strings; And aquatic plant communities including black horses and kites may be planted sequentially.

In addition, a water barrier 324 may be installed between the slope of the filtration module 320 and the soil-free vegetation base material 1 so that the contaminated water communication of the filtration module 320 is blocked.

At this time, the soil-free vegetation base material 1 installed on the upper surface of the water barrier 324 is provided through a wire (not shown) and a cable tie (not shown) installed between the inner wall and the outer wall of the filtration module 320. Can be fixed

Meanwhile, the filtration module 320 may include a first filter unit 321, a second filter unit 322, and a third filter unit 323.

The first filter unit 321, the second filter unit 322, and the third filter unit 323 are sequentially disposed from the outer wall of the filtering module 320 toward the inner wall.

The biocarrier 600 is accommodated in the first filtering unit 321, and the first filtering unit 321 has a first porosity.

At this time, the biocarrier 600 is a carrier dried and coated by impregnating the microbial coating solution for water treatment with natural cellulose and white soil on the surface of a light aggregate obtained by molding and firing bottom ash generated in a thermal power plant, It may be replaced with a filter material having an equivalent or higher function, such as ceramic, pearlite, zeolite, and anthracite, and the present invention is not limited thereto.

A filler having a carrier for reducing organic substances contained in contaminated water to microorganisms is accommodated inside the second filtering unit 322, and the second filtering unit 322 has a second porosity greater than the first porosity. Have.

At this time, the filler 700 is an artificial aggregate or gravel crushed rock, or a filler having an equivalent or higher function, and is dried after coating by impregnating or spraying the microbial coating solution.

A biostone ball for reducing organic substances contained in contaminated water is accommodated inside the third filtering unit 323, and the third filtering unit 323 has a third porosity greater than the second porosity.

The discharge unit 330 may be formed in a cylindrical shape on the inner circumferential surface of the filtration module 320, the upper end is opened, the treated water filtered by the filtration module 320 is introduced in the centripetal direction and discharged to the upper side.

Meanwhile, between the storage unit 310, the first filtering unit 321, the second filtering unit 322, the third filtering unit 323, and the discharge unit 330, a partition wall 360 serving as a partition wall, respectively Can be installed. At this time, the partition wall 360 is to wrap the stone for the embankment with barbed wire.

In this case, the partition wall 360 may be replaced with a wall of a bank, a soil wall in which a transfer pipe is embedded, or a concrete wall in which a transfer pipe is embedded, and the present invention is not limited thereto.

The discharge pond 340 is formed on the upper side of the discharge unit 330 and stores the treated water discharged from the upper end of the discharge unit 330.

At this time, the soil-free vegetation base material (1`) may be installed in the discharge pond 340, and the treated water overflowing from the discharge pond 340 to the storage unit 310 is in the filtration module 320 Contaminants contained in the treated water can be purified while flowing to the surface of the installed soil-free vegetation base material (1`).

The discharge pipe 500 discharges the treated water stored in the discharge pond 340 to the outside so that the treated water stored in the discharge pond 340 does not overflow.

Hereinafter, the driving principle of the inclined centripetal wetland 300 will be described.

First, the contaminated water stored in the storage unit 310 flows into the outer wall of the filtration module 320.

Next, the contaminated water introduced into the filtration module 320 is filtered while flowing from the outer wall to the inner wall of the filtration module 320 and converted into treated water. (At this time, filtration is performed by the plurality of filtration units.)

Next, the treated water filtered through the filtration module 320 is introduced into the discharge unit 330 and discharged to the upper portion of the discharge unit 330 and is stored in the discharge pond 340.

Next, when the water level of the storage unit 310 and the water level of the discharge pond 340 become the same, the discharge pipe 500 discharges the treated water stored in the discharge pond 340 to the outside.

Next, the treated water stored in the discharge pond 340 is discharged to the outside so that the water level of the learning pond 340 is lower than the water level of the storage unit 310, so that the water level of the storage unit 310 and the discharge pond ( The contaminated water stored in the storage unit 310 is transferred to the filtration module 320 due to the difference in water level 340, and the above-described process process is repeated.

Accordingly, the artificial wetland water treatment system according to the present invention expands the flow range of contaminated water by distributing and introducing contaminated water in the centripetal direction, and accelerating the flow rate of contaminated water according to the flow of contaminated water to close the pores of the filtration module. There is an effect of maximizing the efficiency of removing contaminants contained in contaminated water by eliminating the possibility and increasing the difference in flow velocity between the internal flow of contaminated water to increase the efficiency of separating contaminants.

In addition, the artificial wetland water treatment system according to the present invention has the advantage of reducing the amount of land required for wetlands by not placing the discharge pond from which contaminated water is stored and discharged at the rear, but integrally with the upper side of the filtration module.

Meanwhile, referring to FIG. 5, the filtration module 320 may have a ring-shaped shape as a whole, and the discharge part 330 may have a cylindrical shape.

Further, referring to FIG. 6, the filtration module 320 may have a rectangular shape as a whole, and the discharge part 330 may have a rectangular cylindrical shape.

Referring again to FIGS. 3 to 4, the inclined centripetal wetland 300 may further include a filtering frame 350.

The filtration frame 350 is installed inside the discharge unit 330 and is filled with the biostone ball 800 to filter contaminants contained in the treated water passing through the discharge unit 330.

In addition, the filtration frame 350 is slidably installed on the discharge part 330 to easily replace the biostone ball 800 filled in the discharge part 330.

On the other hand, the inclined centripetal wetland 300 is in the biocarrier 600 accommodated in the first filtering unit 321, the filler 700 and the third filtering unit 323 accommodated in the second filtering unit 322 It further includes a plurality of washing nozzles (not shown) installed on the partition wall 360 or the bottom surface of each filtration unit so that the received biostone ball 800 is not blocked.

The washing nozzle sprays washing water to the first filter unit 321, the second filter unit 322, and the third filter unit 323, and the biocarrier 600 accommodated in the first filter unit 321, The sludge caught in the filler 700 accommodated in the 2 filter unit 322 and the biostone ball 800 accommodated in the third filter unit 323 may be washed.

8 is a plan view showing a vegetation contact filtration-oxidized paper according to the present invention.

As shown in FIG. 8, the vegetation contact filtration oxidized paper 200 includes a first vegetation contact passage part 210 and a second vegetation contact passage for improving the filtration efficiency of the contaminated water transferred from the sedimentation pond 100. It may include a part 220.

In the first vegetation contact passage part 210, the soil-free vegetation base materials 1 are installed in a zigzag shape, and a zigzag-shaped first channel is formed between the soil-free vegetation base materials 1.

The second vegetation contact passage part 220 is the soil-free vegetation base material (1) is installed in a zigzag form, the soil-free vegetation base material (1) is installed in the first vegetation contact passage part 210 It is installed to be spaced apart from each other at narrower intervals than the soil-free vegetation base materials (1), and forms a zigzag-shaped second flow path between the soil-free vegetation base materials (1).

Accordingly, while the contaminated water flowing in the vegetation contact filtration oxidized paper 200 flows in zigzag along the first and second passages, aquatic plants vegetated in the soil-free vegetation base material 1 and the lower laying material ( 2) The filtration efficiency is further improved because the time and area in which micro-animals including microorganisms inhabiting the habitat increase in contact with the habitat.

9 is a schematic diagram showing an inclined centripetal wetland according to an example of the present invention.

9, the top surface of the soil-free vegetation base material 1 installed in the filtration module 320 (that is, the top surface of the vegetation mat 10) is formed as a waved wave surface 1a. I can.

Accordingly, filtering efficiency can be improved because the contaminated water stored in the discharge pond 340 increases in contact with the aquatic plants vegetated on the soil-free vegetation base material 1 along the wave surface 1a. .

In particular, in the process of flooding the contaminated water stored in the discharge pond 340 into the storage unit 310 during rainfall or heavy rain, the contaminants contained in the contaminated water are wave formed in the soil-free vegetation base material 1 It can be filtered by being in contact with aquatic plants vegetated on the soil-free vegetation base material 1 along the side 1a.

In addition, as filtered pollutants accumulate on the wave surface (1a), it is utilized as a habitat for earthworms or various micro-animals, and serves to supply nutrients to aquatic plants vegetated on the soil-free vegetation base material (1). I can.

Figure 10 is a schematic diagram showing the biostone ball according to the present invention, Figure 11 is a cross-sectional view showing the biostone ball according to the present invention, Figure 12 is a solid organic matter decomposition through the pores of the biostone ball according to the present invention It is a state diagram showing the process.

As shown in FIGS. 10 to 12, the biostone ball 800 includes a plurality of carriers 810, a first coating layer 820, and an adhesive layer 830.

The carrier 810 may be one or more selected from the group consisting of gravel, ceramic, plastic, glass, and vermiculite.

The first coating layer 820 is coated on the carriers 810, 1 to 20 parts by weight, preferably 5 to 10 parts by weight of an organic acid based on 100 parts by weight of the petroleum resin; 0.01 to 10 parts by weight of cyclohexylamine nitrite, preferably 0.1 to 3 parts by weight; And 0.01 to 5 parts by weight of calcium silicate, preferably 0.1 to 1 part by weight.

At this time, the first coating layer 820 is coated on the surface of the carrier 810 to improve the bonding between the carrier 810 and the adhesive layer 830, thereby preventing the carrier 810 from being separated from the adhesive layer 830. Can be prevented.

The thickness of the first coating layer 820 is 0.01 to 1 mm, preferably 0.05 to 0.5 mm.

However, when the thickness of the first coating layer 820 is less than the lower limit of the preferred range, the bonding strength between the first coating layer 820 and the adhesive layer 830 may be reduced.

The petroleum resin is a material that improves the bonding strength between the first coating layer 820 and the adhesive layer 830, specifically rosin paper, terepene resin, or a mixture thereof, preferably rosin paper. I can.

In addition, when the adhesive layer 830 is directly formed on the carrier 810 by improving the bonding strength between the carrier 810 and the first coating layer 820, the adhesive layer 830 is used as the carrier 810 As a substance that prevents the phenomenon from falling off, specifically, at least one selected from the group consisting of adipic acid, fumaric acid, stearic acid, oleic acid, filmitic acid, lauryl acid, (anhydrous) maleic acid and (anhydrous) terephthalic acid may be mentioned. .

In addition, when the content of the organic acid is less than the lower limit of the preferred range, the bonding strength between the carrier 810 and the first coating layer 820 may decrease, and when the content of the organic acid exceeds the upper limit, the carrier 810 and the first coating layer 820 Although the bonding strength between them is improved, the bonding strength between the first coating layer 820 and the adhesive layer 830 may be reduced.

In addition, the cyclohexylamine nitrite is a material used with an organic acid to improve the bonding strength between the carrier 810 and the first coating layer 820 as well as the strength of the first coating layer 820.

When the content of the cyclohexylamine nitrite is less than the lower limit of the preferred range, the bonding strength between the carrier 810 and the first coating layer 820 and the strength of the first coating layer 820 may decrease, and when the content exceeds the upper limit, Cracks may occur during the curing process.

In addition, the calcium silicate may be used together with a petroleum resin to improve bonding strength between the first coating layer 820 and the adhesive layer 830.

When the content of calcium silicate is less than the lower limit of the preferred range, the bonding strength between the first coating layer 820 and the adhesive layer 830 may decrease, and when the content of the calcium silicate exceeds the upper limit, the first coating layer 820 and the adhesive layer 830 ) May decrease the bonding strength.

The adhesive layer 830 is applied to the surfaces of the carriers 810 to bond the carriers 810 to each other.

At this time, the adhesive layer 830 is based on 100 parts by weight of a resin in which an epoxy resin and calcium carbonate are mixed in a weight ratio of 1:0.1-0.3, and the epoxy amine adduct and polyamide are in a weight ratio of 1:0.6-0.8. Mixed curing agent 40 to 60 parts by weight, carbon black 0.5 to 1 parts by weight, silicon dioxide 5 to 10 parts by weight, aluminum oxide 1 to 8 parts by weight, fly ash 1 to 30 parts by weight, metakaolin 0.01 to 10 parts by weight, poly It may include 0.01 to 10 parts by weight of oxyethylene-polypropylene glycol copolymer and 0.01 to 10 parts by weight of calcined dolomite.

The resin agent is a mixture of an epoxy resin and calcium carbonate in a weight ratio of 1: 0.1-0.3, and when the epoxy resin and calcium carbonate do not satisfy the above range, a resin agent having a viscosity of 8,000 ㅁ 1,000 cps cannot be obtained. , Accordingly, the adhesive strength of the adhesive layer 830 may be reduced.

In addition, the curing agent is a mixture of epoxy amine adduct and polyamide in a weight ratio of 1:0.6-0.8, and when the epoxy amine adduct and polyamide do not satisfy the above range, a curing agent having a viscosity of 200 ㅁ50 cps is used. It cannot be obtained, and accordingly, the adhesive strength of the adhesive layer 830 may be lowered.

When the content of the curing agent is outside the preferred range, the adhesive strength of the adhesive layer 830 may decrease.

In addition, the carbon black not only protects the light-sensitive epoxy resin from light, but also increases the surface area to attach a large amount of microorganisms.

When the content of the carbon black is less than the lower limit of the preferred range, the epoxy resin is aged by light, and as time passes, the bonding strength rapidly decreases and the adhesion amount of microorganisms may decrease.

In addition, the silicon dioxide is a material that significantly improves the compressive strength when used with an epoxy resin, and if the content of silicon dioxide is less than the lower limit of the preferred range, the compressive strength may decrease, and if it exceeds the upper limit, voids Can interfere with the formation of

In addition, the aluminum oxide is a material that significantly improves the compressive strength by being used together with an epoxy resin and silicon dioxide, and when the content of aluminum oxide is outside the above range, it may be lower than the required compressive strength (3.8 MPa).

In addition, the fly ash is a material that has pozzolanic properties and improves the strength and durability of the adhesive layer 830. When the content of fly ash is less than the lower limit of the preferred range, strength and durability may be lowered.

In addition, the metakaolin also has pozzolanic properties, and when used together with the fly ash, the strength and durability of the adhesive layer 830 are remarkably improved. When the content of metakaolin is less than the lower limit of the preferred range, strength and durability may not be improved, and when the content of metakaolin exceeds the upper limit, strength and durability may be rather deteriorated.

In addition, the polyoxyethylene-polypropylene glycol copolymer prevents cracks from being formed in the adhesive layer 830 during curing. When the content of the polyoxyethylene-polypropylene glycol copolymer is less than the lower limit of the preferred range, the number of pores decreases and cracks may occur during curing.

In addition, the calcined dolomite is a carbonate mineral that is calcined at 900 to 1,000 degrees, and magnesium oxide (MgO) is 32 to 35% by weight and calcium oxide (CaO) is 50 in the total constituents of calcined dolomite. To 55% by weight, and when used with a polyoxyethylene-polypropylene glycol copolymer, a large number of pores can be easily formed, and when calcined dolomite is used even in the same area, more microorganisms are attached. In addition, it is used as a source of calcium ions required for the pozzolanic reaction, and may contribute to improving the strength and durability of the adhesive layer 830.

When the content of the calcined dolomite is out of the preferred range, a desired amount of voids may not be formed and microorganisms may not adhere in large amounts.

The adhesive made of the above materials has excellent adhesion to the first coating layer 820 by having an adhesive strength of 110 to 150 kg/㎠, and the contactable pot life is 30 to 40 minutes, and re-adhesion is easy within the pot life. Do.

In addition, the biostone ball 800 is coated on the surface of the adhesive layer 830 and includes a second coating layer 840 formed in a porous structure, and the pores of the second coating layer 840 are filled with microorganisms, Microorganisms stably growing and proliferating through the pores and microorganisms stably growing and proliferating in the adhesive layer 830 may decompose organic matter to perform a self-cleaning action.

The second coating layer 840 is coated only on the outside of the biostone ball 800 by spraying an organic/inorganic coating agent on the cured surface of the biostone ball 800 by high pressure spraying (that is, the biostone ball 800 ) Is coated on the upper part of the adhesive layer 830 on the outside), and is not coated on the inside.

The second coating layer 840 is coated by high-pressure spraying to form a plurality of voids and a plurality of through holes together. This is because the organic/inorganic coating agent has a higher content of solids than the content of the resin, so when coating by high pressure spraying, voids are formed, and after being attached to the upper surface of the adhesive layer 830, some solids are removed and through holes are formed. . When the organic/inorganic coating agent is coated by a method such as spray spraying or immersion instead of high-pressure spraying, voids are not properly formed in the first coating layer 820 and through holes are not formed at all. The void is also formed as a space between the bonded inorganic particles.

In addition, a large amount of microorganisms may be filled (attached) to the plurality of pores formed in the second coating layer 840. The microorganism used in the biostone ball 800 is not particularly limited as long as it can self-purify contaminated water, but preferably, at least one selected from the group consisting of complex useful microorganisms, bacillus, denitrifying microorganisms and bacteria may be mentioned. .

The thickness of the second coating layer 840 is 0.05 to 1 mm, preferably 0.1 to 0.5 mm. When the thickness of the second coating layer 840 is less than the lower limit of the preferred range, a large amount of voids are not generated, and when the thickness exceeds the upper limit, through holes are not formed and solids are easily removed, further contaminating contaminated water, and midnight Your ability may be impaired.

The second coating layer 840 may include 1 to 20 parts by weight, preferably 5 to 10 parts by weight of Schunggit powder, based on 100 parts by weight of the elastomer resin; 1 to 10 parts by weight, preferably 5 to 8 parts by weight of seaweed powder; 0.01 to 10 parts by weight of iron oxide, preferably 2 to 8 parts by weight; 1 to 15 parts by weight of magnesite, preferably 5 to 10 parts by weight; 1 to 15 parts by weight of alginate, preferably 5 to 10 parts by weight; 1 to 15 parts by weight of dolomite, preferably 5 to 10 parts by weight; 0.1 to 5 parts by weight of organic fibers, preferably 2 to 4 parts by weight; 0.1 to 5 parts by weight of inorganic fibers, preferably 1 to 3 parts by weight; Illite 1 to 10 parts by weight, preferably 5 to 8 parts by weight; And 1 to 10 parts by weight, preferably 5 to 8 parts by weight of pearlite.

The elastomer resin not only prevents damage to the biostone ball 800 by contaminated water by imparting elasticity to the biostone ball 800, but also connects and fixes inorganic materials to each other.

In addition, the Sunggit powder itself can purify contaminated water and perform an antibacterial action, as well as attach microorganisms in large amounts. When the content of the Schungit powder is less than the lower limit of the preferred range, the amount of microbial adhesion may be reduced, and when the content of the powder is greater than the upper limit, the hardness may decrease.

In addition, the algae powder is a material capable of not only attaching a large amount of microorganisms, but also increasing the self-cleaning effect on contaminated water by growing the attached microorganisms, specifically at least one selected from the group consisting of green algae, brown algae, and red algae. Can be mentioned. As the green algae, prickly blue, cheongtae, haekham, green, auditory, bead hearing, jade vine, salt jumal, etc. may be used; As the brown algae, seaweed, kelp, seaweed soybean, Ecklonia cava, gompi, rhubarb, hatban, worms, and tot may be used; As the red algae, seaweed, ginseng gashiri, buldeung gashiri, kotoni, prawns, red algae, kushiraegi, etc. may be used, but the present invention is not limited thereto.

The seaweed powder includes a washing step of washing the seaweed with purified water, a drying step of drying the washed seaweed for 8 to 9 hours, and extracting the dried seaweed with a solvent for 4 to 5 hours at 40 to 90 degrees and then concentrating under reduced pressure to extract It is made through a step of obtaining, a hot air drying step of hot air drying the obtained extract for 8 to 9 hours, and a step of powdering the dried seaweed into 50 to 100 mesh.

When the content of the algae powder is less than the lower limit of the preferred range, the amount of microbial adhesion is lowered and the microorganism cannot grow, and when the content of the algae powder exceeds the upper limit, contaminants may be generated by the algae powder.

In addition, the iron oxide can remove traces of harmful substances contained in contaminated water, and can form a number of voids, as well as improve the strength of the first coating layer 820, and have an inner porosity of 22% and an outer void. 37% and a surface area of 20 m 2 /g are used.

When the content of the iron oxide is less than the lower limit of the preferred range, the number of voids formed may be reduced, and when the content exceeds the upper limit, the strength may decrease.

In addition, the magnesite can also remove traces of harmful substances contained in contaminated water, and can form a number of voids, as well as further improving the strength of the first coating layer 820 when used with iron oxide. Use the one with a porosity of 75%, external voids of 45%, and a surface area of 200 m2/g.

When the content of the magnesite is less than the lower limit of the preferred range, the number of voids formed may be reduced, and when the content of the magnesite exceeds the upper limit, cracks may easily occur.

In addition, the alginate is not toxic to microorganisms and can form a large number of pores. When the content of the alginate is less than the lower limit of the preferred range, the number of formed voids may be reduced, and when it exceeds the upper limit, the formation of voids may be rather hindered.

In addition, the dolomite is a material that improves the strength of the second coating layer 840 by being used together with an elastomer resin, and prevents the second coating layer 840 provided on the outermost surface from easily falling off. When the content of the dolomite is less than the lower limit of the preferred range, the strength of the second coating layer 840 decreases and the first coating layer 820 may fall off over time to further contaminate the contaminated water, exceeding the upper limit. In the case of ?, the strength of the first coating layer 820 may decrease and formation of voids may be hindered.

In addition, the organic fiber improves the adhesion strength of the second coating layer 840 and improves the impact resistance, and specifically, at least one selected from the group consisting of crushed paper powder, wood powder, and vegetable fiber Can be lifted.

When the content of the organic fiber is less than the lower limit of the preferred range, strength and impact resistance may not be improved, and when the content of the organic fiber exceeds the upper limit, adhesion strength may decrease.

In addition, the inorganic fiber is a material that not only further increases the compressive strength or tensile strength when used together with the organic fiber, but also maintains the elasticity of the first coating layer 820, and is specifically made of rock wool, glass wool, basalt wool, and ceramic wool. At least one selected from the group consisting of may be mentioned.

When the content of the inorganic fiber is less than the lower limit of the preferred range, the compressive strength or tensile strength may not be improved, and when the content of the inorganic fiber exceeds the upper limit, the effect may not be improved any more, and thus it may not be economical.

In addition, the illite and pearlite may be used together to improve the compressive strength of the first coating layer 820 and form a plurality of voids. When the content of each of the illite and pearlite is less than the lower limit of the preferred range, the compressive strength may not be improved, and when the content exceeds the upper limit, the compressive strength may be lowered.

The carrier 810 is used having an average diameter of 2 to 3 cm, and the biostone ball 800 obtained by bonding a plurality of carriers 810 of the size has an average diameter of 8 to 12 cm, preferably Is 9 to 10 cm. As shown in FIG. 5, when the average diameter of the biostone ball 800 satisfies the preferred range, both the surface area and the voids are within the excellent range. If the average diameter is less than the lower limit of the preferred range, the surface area is high, but the pores are low, so the flow resistance of contaminated water is increased due to the narrow pores, and clogging may occur. If the average diameter exceeds the upper limit, the pores are high but the surface area is It is low, and the self-cleaning effect may be reduced.

In addition, the biostone ball 800 is used in the third filtering unit 323 having a maximum effective depth of 5 m, and generally, when applied to the third filtering unit 323, the maximum stacking of the biostone ball 800 The number is 55 ea, the weight of the biostone ball 800 is 0.6-0.7 kg/ea, and considering that the force applied to the biostone ball 800 of the bottom layer is 365 to 375 N, the biostone ball ( 800), the required compressive strength should be 3.8 MPa or higher. Since the compressive strength of the biostone ball 800 is 4.3 to 4.6 MPa, it exhibits excellent compressive strength more than the required compressive strength.

When the contaminated water passes through the bio-stone ball 800, the bio-stone ball 800 has a plurality of voids formed in the bio-stone ball 800 (a void formed in the second coating layer 840, between the adhered carrier 810). In the pores formed in the pores, etc.), it not only removes solids by performing physical actions such as diffusion, separation, contact, precipitation, and attraction of contaminants, but also removes the solids by the microorganisms attached to the pores when they come into contact with contaminated water. The organic matter and nitrogen components contained are also removed.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1, 1`: soil-free vegetation base material
1a: wave side
10: Vegetation mat
11: perforation
20: net body
30: buoyancy material
40: Associate
2: lower paving material
100: settling ground
200: vegetation contact filtration oxidation paper
210: vegetation channel
211: shielding film
212: non-woven fabric
213: plunge tube
214: grating
300: Inclined Centripetal Wetland
311: Overflow wall
320: filtration module
321: first filter unit
322: second filter unit
323: third filter unit
324: water curtain
330: discharge part
340: discharge pond
350: filtration frame
360: bulkhead
500: discharge pipe
600: biocarrier
700: filler
800: Bio Stone Ball
810: carrier
820: first coating layer
830: adhesive layer
840: second coating layer
900: horizontal pipe

Claims (7)

A sedimentation site 100 in which a soil-free vegetation base material (1`) is installed floating in the contaminated water, and contaminants contained in the contaminated water are filtered by the roots of aquatic plants or settled and removed by a sedimentation action;
A soil-free vegetation base material (1) is installed on the bottom surface, and the contaminated water transferred from the sedimentation site (100) flows to the surface of the soil-free vegetation base material (1) while pollutants are filtered through vegetation contact filtration ( 200);
A storage unit 310 in which contaminated water transferred from the vegetation contact filtration oxidation paper 200 is stored, and the top and bottom are sealed and the top surface is formed in an inclined shape that decreases toward the centripetal direction, and the contaminated water transferred from the storage unit 310 A filtration module 320 that generates treated water by filtering contaminants contained in the contaminated water while flowing from the outer wall to the inner wall, and the upper end is opened and the treated water introduced from the filtration module 320 in the centripetal direction is discharged to the top. An inclined centripetal wetland 300 including a discharge part 330 and a discharge pond 340 in which the treated water discharged to the upper part of the discharge part 330 is stored; And
An artificial wetland water treatment system including a discharge pipe 500 for discharging the treated water stored in the discharge pond 340.
The method of claim 1, wherein the filtration module (320),
An artificial wetland water treatment system including a plurality of filtration units whose porosity increases from the outer wall to the inner wall.
The method of claim 2, wherein the filtration module (320),
A first filter unit 321 accommodating the biocarrier 600 therein;
A second filtering unit 322 accommodating a filler 700 coated with a microbial coating solution therein; And
An artificial wetland water treatment system including; a third filter unit 323 for accommodating the biostone ball 800 therein.
The method of claim 2, wherein the filtration module (320),
An artificial wetland water treatment system formed in a ring shape.
The method of claim 1, wherein the filtration module (320),
An artificial wetland water treatment system in which a water barrier 324 and a soil-free vegetation base material 1 are sequentially installed and sealed on the upper surface.
The method of claim 1, wherein the inclined centripetal wetland (300),
An artificial wetland water treatment system further comprising a filtration frame 350 installed in the discharge unit 330 and filled with a biostone ball 800.
The method of claim 3, wherein the inclined centripetal wetland (300),
Artificial further comprising partition walls 360 respectively installed between the storage unit 310, the first filtering unit 321, the second filtering unit 322, the third filtering unit 323, and the discharge unit 330 Wetland water treatment system.

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