KR102050972B1 - A inclined wetland with centripetal flow - Google Patents

Abstract

The present invention relates to an inclined centripetal wetland comprising: a storage unit (310) storing contaminated water; a filtration module (320) having an inclined shape of which an upper surface becomes lower as going toward a centripetal direction while upper and lower surfaces are sealed, and producing treated water by filtering contaminants contained in contaminated water while the contaminated water transferred from the storage unit (310) flows from the outer wall to an inner wall; a discharge unit (330) having an open upper end and discharging the treated water introduced along the centripetal direction from the filtration module (320) upward; and a discharge pond (340) storing treated water discharged to an upper portion of the discharge unit (330).

Description

A inclined wetland with centripetal flow

The present invention distributes and introduces contaminated water in a centripetal direction to expand the flow range of contaminated water, accelerates the flow rate of contaminated water according to the internal flow of contaminated water, and eliminates the possibility of the air gap blocking of the filtration module. The present invention relates to an inclined centripetal wetland that can maximize the removal efficiency of pollutants contained in the contaminated water by increasing the flow rate difference between flows.

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

First of all, point source can be easily treated by constructing sewage treatment plant or wastewater treatment plant as a contaminated source with limited discharge point such as living sewage and industrial wastewater discharged from residential area or industry.

Next, nonpoint pollutants are mainly pollutants that are discharged along with surface runoff when it rains, and fertilizers, pesticides, soil erosions, barn spills, traffic pollutants, urban dust and garbage, and natural tracts. Residues of plants and air pollutants that fall on the ground become contaminated water mixed with rainwater.

Since nonpoint pollutants occur mainly during rainfall, they have large differences in daily and seasonal emissions, difficult to predict and quantify, and are affected by weather conditions and geological topography, which are difficult to artificially control. Therefore, emission standards are not systematically set.

Here, the treatment method for reducing the non-point source is used artificial wetlands, vegetation filtration, reservoirs, physical filtration facilities (filtration tanks, infiltration tanks, pore packaging), etc., and research for scientific verification of the removal effect is made in a variety of ways Various processing apparatuses and techniques have been developed and commercialized.

Among them, as a non-point source reduction method using ecologically healthy natural purification techniques, treatment by artificial wetlands has emerged as an alternative.

Artificial wetland can treat nonpoint pollutants or control rainfall, and artificially improves the purification ability of wetlands in the natural state such as precipitation, filtration, adsorption, microbial decomposition, and purification by vegetation plants. Water quality management using artificial wetlands is an economical advantage that the cost of treatment is low, and because the treatment method itself uses a part of the natural ecosystem and the removal of pollutants is efficient, the natural water purification function of artificial wetlands is used. There are many researches applied to water quality improvement at home and abroad.

Such a technique for artificial wetland is related to a high efficiency composite artificial wetland system of Korean Patent No. 10-1815246, which is formed adjacent to a river or sewage and wastewater treatment facility and relatively upstream to precipitate impurities contained in contaminated water. A sedimentation basin formed on the side; A wetland portion in which aquatic plants are planted so that water can be purified by sedimentation of particles, destruction of pathogenic substances, absorption and decomposition of nutrients while flowing impurity treated water flowed out from the sedimentation pond; A vertical underground flow rate control tank provided to be drained downstream when the purified water purified by the wetland part is stored at a predetermined level while storing the purified water therein; The purified water supplied by being connected to the vertical underground flow control tank is discharged by a spraying method, and a porous material is filled in the bottom so that aquatic plants can be planted to adsorb contaminants, and then drainage is possible. A vertical underground flow wet part provided to increase the oxygen transfer rate and to oxidize and decompose a high concentration of contaminants; A horizontal underground flow rate control tank installed to be connected to the vertical underground flow wetland part and configured to be drained to a downstream side when stored at a predetermined level while storing the discharged water having high concentration of pollutants adsorbed therein; Horizontal is provided to remove phosphorus by horizontally flowing the discharged water discharged from the horizontal underground flow control tank, the nitrogen nitrified through the horizontal underground flow control tank to allow denitrification by microorganisms A high efficiency composite artificial wetland system including an underground flow wetland portion is disclosed.

In addition, the vertical ground flow flow control tank installed on the upper portion of the vertical ground flow wetland is connected to the other end of the vertical ground flow connecting pipe connected to one end of the wetland and the vertical underground provided to store the purified water flowing out A flow control valve for flow, a vertical ground flow positioning plate having one end fixed to the inner front surface of the flow control tank for vertical flow and the other end being horizontally provided by protruding, and the flow control storage tank for the vertical flow flow One end of the vertical underground flow flexible pipe, which is provided to be positioned inside the vertical underground flow control reservoir by one end connected to the buoyant discharge pipe for vertical underground flow piped to the lower end of the inner side, and the other end of the vertical underground flow flexible pipe In communication with each other by being connected to the outer circumferential surface, the vertical underground flow inlet for the inlet of the purified water Is formed to rise by the buoyancy corresponding to the inlet of the purified water to include a vertical ground flow floating body which is provided to be supported on the bottom of the vertical ground flow positioning plate.

In addition, one end is inserted and fixed through the other outer circumferential surface of the vertical underground flow floating body, the other end is exposed to the outside, the vertical underground flow floating body is raised to correspond to the purified water stored in the vertical underground flow control reservoir. While flowing the purified water according to the bottom of the vertical ground flow position stopping plate to the vertical ground flow floating side, the vertical ground flow floating water purification pipe is configured to be locked.

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

In addition, in the prior art, since the contaminated water flows and is filtered in one direction, the inlet cross-section of the contaminated water is relatively small, and there is no difference in flow velocity between the pores of the porous medium, so that the pores of the porous medium can be blocked by the particulate material and the microbial membrane. In addition, there is a problem that the removal efficiency of the pollutants contained in the contaminated water is reduced, the water flow capacity (treatment flow rate) of the contaminated water is reduced and the maintenance efficiency is lowered.

Korea Patent Registration No. 10-1815246 (2017.12.28)

The present invention has been made to solve the above problems, an object of the present invention is to distribute the contaminated water in the centripetal direction to expand the flow range of the contaminated water, and to increase the flow rate of the contaminated water according to the internal water flow Inclined cores that can maximize the removal efficiency of pollutants in the contaminated water by accelerating the elimination of pore blockage of the filtration module and increasing the flow rate difference between the internal water flow of the contaminated water. It is to provide a wetland.

In addition, another object of the present invention is to provide an inclined centripetal wetland that can reduce the wetland site by integrally configured on the upper side of the filtration module without leaving the discharge pond discharged to store the contaminated water in the rear.

Inclined centripetal wetland according to the present invention is a storage unit 310 is stored contaminated water; The upper and lower surfaces are sealed, and the upper surface is formed in an inclined shape that is lowered toward the centripetal direction, and the polluted water transferred from the storage 310 flows from the outer wall to the inner wall while filtering contaminants contained in the contaminated water to generate treated water. Module 320; A discharge part 330 having an upper end open and discharging the treated water introduced in the centripetal direction from the filtration module 320 upwardly; And a discharge pond 340 in which the treated water discharged to the upper portion of the discharge part 330 is stored.

In addition, the filtration module 320 includes a plurality of filtration unit in which the voids increase from the outer wall to the inner wall.

In addition, the filtration module 320 includes a first filtration unit 321 for receiving the bio-carrier 600 therein; A second filtration part 322 for receiving a filler 700 coated with a microbial coating solution therein; And a third filtration 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 the order membrane 324 and the soil-free vegetation base material (1) on the upper surface.

In addition, the discharge unit 330 is further provided with a filtration frame 350 filled with the biostone ball 800.

In addition, the storage unit 310, the first filtration 321, the second filtration 322, the third filtration 323 and the discharge portion 330, respectively installed between the partition further includes a further do.

Accordingly, the inclined centripetal wetland according to the present invention spreads the contaminated water in the centripetal direction to expand the flow range of the contaminated water, and accelerates the flow rate of the contaminated water according to the internal water flow of the contaminated water, thereby increasing the air gap in the filtration module. By eliminating the possibility of clogging and increasing the flow rate difference between the internal flow of contaminated water to increase the separation efficiency of pollutants, there is an effect to maximize the removal efficiency of the pollutants contained in the contaminated water.

In addition, the inclined centripetal wetland according to the present invention has the advantage of reducing the required wetland site by constructing integrally on the upper side of the filtration module without leaving the discharge pond in which the polluted water is discharged.

1 is a cross-sectional view showing an artificial wetland with a sloped centripetal wetland in accordance with the present invention.
Figure 2 is a cross-sectional view showing a sloped centripetal wetland in accordance with the present invention.
3 to 4 are plan views showing the flow direction of the inclined centripetal wetland in accordance with the present invention.
Figure 5a is a cross-sectional view showing a vegetation channel according to an embodiment of the present invention.
Figure 5b is a sectional view showing a vegetation channel according to another embodiment of the present invention.
Figure 6 is a plan view showing the vegetation contact filtration paper according to the present invention.
Figure 7 is a schematic diagram showing the inclined centripetal wetland in accordance with an example of the present invention
8 is a schematic view showing a biostone ball according to the present invention.
9 is a cross-sectional view showing a biostone ball according to the present invention.
10 is a state diagram showing a process of decomposing the solid organic matter through the pores of the biostone ball according to the present invention.

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

The accompanying drawings are only examples to illustrate the technical idea of the present invention in more detail, and thus the technical idea of the present invention is not limited to the forms of the accompanying drawings.

1 is a cross-sectional view showing an artificial wetland having an inclined centripetal wetland in accordance with the present invention, Figure 2 is a cross-sectional view showing an inclined centripetal wetland in accordance with the present invention, Figures 3 to 4 are inclined centripetal in accordance with the present invention 5A is a cross-sectional view illustrating a vegetation channel according to an example of the present invention, and FIG. 5B is a cross-sectional view of a vegetation channel according to another example of the present invention.

As shown in Figure 1, the artificial wetland with a slope-type centripetal wetland in accordance with the present invention is settled 100, the vegetation contact filtration paper 200, the inclined type discharge pond 340 is integrally formed on the top It includes a centripetal wetland 300 and the discharge pipe (500).

The sedimentation pond 100 is a soil-free vegetation base material (1) is installed in the contaminated water as a pretreatment process, and the pollutants contained in the contaminated water flooded in rivers or generated from sewage treatment facilities by rainfall or heavy rain It is 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 base 100, water purification efficiency such as reeds, buds, moon roots, yellow irises, etc. is good in the soil-free vegetation base material (1) Plant perennial purified plants and mow periodically.

In addition, the soil-free vegetation base material (1) is made of buoyant buoyancy material, it may be composed of a synthetic material mat or natural material mat, such as PE (polyethylene) wrapped with a mesh mesh, aquatic plants for vegetation Perforations are formed, and the soil-free vegetation base material (1) to replace the role of the soil is composed of no soil.

In addition, the sedimentation basin 100, the roots of aquatic plants formed on the bottom of the soil-free vegetation base material 1 collides, delays, adheres, and aggregates particulate organic matter and colloidal material among contaminants contained in contaminated water. Let it sink.

In addition, the sedimentation basin 100 is a root of aquatic plants formed on the bottom of the soil-free vegetation base (1) serves as a microbial contact media, the contaminants in the water by the microorganisms attached to the roots and proliferate It also plays a role in biological degradation and removal.

The vegetation contact filtration paper 200 is a surface flow wetland, the soil-free vegetation base material (1) is installed on the bottom surface, the contaminated water transferred from the sedimentation place 100, the soil-free vegetation base material (1) The contaminant is filtered as it flows to the surface of the.

In order to contribute to the filtration and purification of the contaminated water, a lower cover material 2 consisting of gravel or a functional carrier may be installed at the lower portion of the soil-free vegetation base material 1.

At this time, the lower tongue 2 is impregnated with the microbial coating solution in the gravel or functional carrier, the microscopically containing the microorganisms in the lower tongue 2 is discharged from the self-cleaning action and the aggregate by the biological interaction Calcium ions can decompose organic substances among contaminants contained in contaminated water.

At this time, the microbial coating liquid is formed by adding at least one of a microbial low molecular strain, microbial polymer strain and microbial denitrification strain to a liquid base material mixed with natural cellulose powder, starch acetate, white earth powder, water, the microbial low molecular strain , Lactobacillus genus, Saccharomyces genus, Rhodoschudomonas genus, Streptomyces genus, and the microbial polymer strain comprises at least one of mesophilic species and pyrogenic species of the genus Bacillus, The microbial denitrification strain may include at least one of a strain belonging to the genus Cassana, a strain belonging to the genus Denitripeacus among the genus Paracocos.

On the other hand, the contaminated water stored in the sedimentation place 100 by the horizontal tube 900 or the vegetation channel 1000 in horizontal communication between the sedimentation place 100 and the vegetation contact filtering oxidation place 200 May be transferred to 200.

As shown in FIG. 5A, the vegetation channel 1000 includes a shielding film 1010 embedded in the ground and a nonwoven fabric 1020 coupled to an upper surface of the shielding film 1010. The soil-free vegetation base material 1 is installed on the ground located above, and the biostone ball 800 is filled between the nonwoven fabric 1020 and the soil-free vegetation base material 1.

The shielding film 1010 and the nonwoven fabric 1020 serve to prevent contaminated water from penetrating into the ground.

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

As shown in FIG. 5B, the vegetation channel 1000 includes a fluff tube 1030 embedded in the ground, a grating 1040 installed on the ground located above the flnt tube 1040, and the flutter tube The biostone ball 800, the nonwoven fabric 1020, and the soilless vegetation base material 1 may be sequentially installed between the 1030 and the grating 1040.

The flywheel tube 1030 is formed in a U shape, the upper surface is opened, and serves to prevent the contaminated water penetrates into the ground.

The grating 1040 is formed in a lattice shape, is installed to be opened and closed, and may be made of steel.

At this time, by opening and closing the grating 1040, the biostone ball 800, the nonwoven fabric 1020 and the soil-free vegetation base material (1) can be easily replaced.

As shown in FIG. 2, the inclined centripetal wetland 300 serves to flow and filter the contaminated water transferred from the vegetation contact filtration paper 200 toward the center.

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

The storage unit 310 is temporarily stored in the contaminated water transferred from the vegetation contact filtration paper 200, the overflow wall 311 is installed therein.

At this time, the overflow wall 311 allows the polluted water stored in the storage 310 to be evenly distributed in the circumferential direction, the pollutants contained in the polluted water stored in the storage 310 is mixed with each other, Only the contaminated water overflowed from the overflow wall 311 is supplied to the filtration module 320 in a centripetal direction (that is, 360 degrees forward direction) to adjust the flow rate of the contaminated water.

At this time, the soil-free vegetation base material 1 is installed in the storage unit 310, the soil-free vegetation base material 1 physically and biologically removes contaminants contained in the contaminated water, Blocking the sunlight of the storage unit 310 can prevent the green algae generation (the storage unit 310 is an open water).

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

In addition, the inside of the filtration module 320 is provided with a plurality of filtration unit to increase the gap from the outer wall to the inner wall (that is, the center direction), the contaminated water transferred from the storage unit 310 is a plurality of filtration unit It is filtered while passing.

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

In this case, when the soil-free vegetation base material (1) is installed in the filtration module 320, the soil-free vegetation base material (1) should be configured to a thickness of at least 30cm to enable the growth of plants, centripetal direction As a reference, from the outside from the inside willow willow, buckthorn, waterfowl, hydrangea including a bud flower; A colony of whole plants including buds, yellow irises, sesame seeds, and strings; And aquatic plant communities including black horses and lotuses can be planted sequentially.

In addition, a water barrier membrane 324 may be installed between the inclined surface of the filtration module 320 and the soilless 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 top surface of the water-repellent membrane 324 is 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 part 321, a second filter part 322, and a third filter part 323.

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

The biocarrier 600 is accommodated in the first filter part 321, and the first filter part 321 has a first gap.

At this time, the biocarrier 600 is a carrier that is dried and coated by impregnating the microbial coating solution for water treatment with natural cellulose and clay on the surface of a light aggregate formed by baking bottom ash generated from a thermal power plant. It is also possible to replace it with a filter medium having a function equal to or greater than ceramic, pearlite, zeolite, anthracite, and the like, but the present invention is not limited thereto.

The second filter 322 is accommodated in the filler 700 having a carrier for reducing the organic matter contained in the contaminated water to the microorganism, the second filter 322 is larger than the first pore It has two pores.

At this time, the filler 700 is an artificial aggregate or gravel or a filler having an equivalent or more function of crushed rock, the microbial coating solution is impregnated or sprayed and dried after coating.

The biostone ball for reducing the organic matter contained in the contaminated water is accommodated inside the third filter 323, and the third filter 323 has a third void larger than the second void.

The discharge portion 330 may be formed in a cylindrical shape on the inner circumferential surface of the filtration module 320, the top is open and the treated water filtered by the filtration module 320 flows in the centripetal direction and is discharged to the top.

Meanwhile, partition walls 360 may be installed between the storage unit 310, the first filter unit 321, the second filter unit 322, the third filter unit 323, and the discharge unit 330, respectively. .

In this case, the partition wall 360 may be replaced with a dike stone wrapped with barbed wire, a ground wall in which the conveying pipe is embedded, or a concrete wall in which the conveying pipe is embedded, and the present invention is not limited thereto.

The discharge pond 340 is formed on the upper side of the discharge portion 330, the treated water discharged from the upper end of the discharge portion 330 is stored.

In this case, the soilless vegetation base material 1 may be installed in the discharge pond 340, and the treated water overflowed from the discharge pond 340 to the storage 310 is installed in the filtration module 320. Contaminants contained in the treated water may be purified while flowing to the surface of the 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 sloped centripetal wetland 300 will be described.

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

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

Next, the treated water filtered by the filtration module 320 is introduced into the discharge portion 330 is discharged to the upper portion of the discharge portion 330 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 is 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, the level of the storage unit 310 and the discharge pond ( The contaminated water stored in the storage 310 at the level difference of 340 is transferred to the filtration module 320 to repeat the above-described process.

Accordingly, the inclined centripetal wetland according to the present invention spreads the contaminated water in the centripetal direction to expand the flow range of the contaminated water, and accelerates the flow rate of the contaminated water according to the internal water flow of the contaminated water, thereby increasing the air gap in the filtration module. By eliminating the possibility of clogging and increasing the flow rate difference between the internal flow of contaminated water to increase the separation efficiency of pollutants, there is an effect to maximize the removal efficiency of the pollutants contained in the contaminated water.

In addition, the inclined centripetal wetland according to the present invention has the advantage of reducing the required wetland site by constructing integrally on the upper side of the filtration module without leaving the discharge pond in which the polluted water is discharged.

Meanwhile, referring to FIG. 3, the filtration module 320 may have a ring shape as a whole, and the discharge part 330 may have a cylindrical shape.

In addition, referring to FIG. 4, the filtration module 320 may have a rectangular shape as a whole, and the discharge part 330 may have a rectangular shape.

Referring back to FIGS. 1 and 2, the inclined centripetal wetland 300 may further include a filtration frame 350.

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

In addition, the filtration frame 350 is slidably installed in 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 filtration unit 321, the filler 700 and the third filtration unit 323 accommodated in the second filtration unit 322. A plurality of washing nozzles (not shown) are further provided on the partition wall 360 or the bottom surface of each filtration unit so that the received biostone ball 800 is not blocked.

The cleaning nozzle sprays the washing water onto the first filtration unit 321, the second filtration unit 322, and the third filtration unit 323, and includes the biocarrier 600 accommodated in the first filtration unit 321. The sludge hung on the filler 700 accommodated in the second filter 322 and the biostone ball 800 accommodated in the third filter 323 may be cleaned.

To summarize the installation location and function of the soil-free vegetation base material (1), the contaminants contained in the contaminated water is installed floating in the sedimentation basin 100, the storage unit 320 and the discharge pond (340) Filtered.

In addition, the soil-free vegetation base material (1) is installed on the bottom surface of the vegetation contact filtration paper 200, and the upper surface of the filtration module 320 to flow the contaminated water to the surface contaminants contained in the contaminated water Is filtered.

Figure 6 is a plan view showing the vegetation contact filtration paper according to the present invention.

As shown in FIG. 6, the vegetation contact filtration paper 200 has a first vegetation contact passage 210 and a second vegetation contact flow path for improving the filtration efficiency of the contaminated water transferred from the sedimentation basin 100. It may include a part 220.

The first vegetation contact flow path 210 is provided with the soil-free vegetation base materials 1 in a zigzag form, and forms a zigzag-shaped flow path between the soil-free vegetation base materials 1.

The second vegetation contact flow path 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 flow path (210) The soil-free vegetation base material (1) is installed to be spaced apart from each other narrower, and form a zigzag flow path between the soil-free vegetation base material (1).

Accordingly, the contaminated water flowing in the vegetation contact filtration oxidation zone 200 flows zigzag along the flow path of the first vegetation contact flow path 210 and the flow path of the second vegetation contact flow path 220. Filtration efficiency is further improved because the time and area of contact with the aquatic plants inhabited by the vegetation base material 1 and the micro-animals inhabiting the lower tongue 2 increase.

Figure 7 is a schematic diagram showing a sloped centripetal wetland in accordance with an example of the present invention.

As illustrated in FIG. 7, the soilless vegetation base 1 installed in the filtration module 320 may be formed of a wave surface 1a having an upper surface thereof.

Accordingly, the filtration efficiency may be improved because the area in which the contaminated water stored in the discharge pond 340 is in contact with the aquatic plants vegetated on the soilless vegetation base material 1 along the wave surface 1a increases. .

In particular, in the process of flooding the contaminated water stored in the discharge pond 340 to the storage unit 310 during rainfall or heavy rain, the contaminants contained in the contaminated water are formed in the soilless vegetation base material 1. Along the surface (1a) can be filtered in contact with the aquatic plant vegetation in the soil-free vegetation base (1).

In addition, while the contaminants filtered on the wave surface (1a) accumulate, it is utilized as a habitat for earthworms or various micro-animals, and serves to supply nutrients to the aquatic plants vegetated on the soilless vegetation base material (1). Can be.

8 is a schematic view showing the biostone ball according to the present invention, Figure 9 is a cross-sectional view showing the biostone ball according to the present invention, Figure 10 is decomposing solid organic matter through the pores of the biostone ball according to the present invention State diagram showing the process.

As shown in FIGS. 8 to 10, the biostone ball 800 includes a plurality of crushed stone 810, a first coating layer 820, and an adhesive layer 830.

The crushed stone 810 may be at least one selected from the group consisting of gravel, ceramic, plastic, glass, and vermiculite.

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

At this time, the first coating layer 820 is coated on the surface of the crushed stone 810 to improve the bonding of the crushed stone 810 and the adhesive layer 830 to separate the crushed stone 810 from the adhesive layer 830 You can prevent it.

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 force of the first coating layer 820 and the adhesive layer 830 may be lowered.

The petroleum resin is a material that improves the bonding strength of the first coating layer 820 and the adhesive layer 830, and specifically include rosin paper, terephen resin, or a mixed resin thereof, and preferably rosin paper. Can be.

In addition, the organic acid improves the bonding force between the crushed stone 810 and the first coating layer 820, when the adhesive layer 830 is formed directly on the crushed stone 810, the adhesive layer 830 in the crushed stone 810 when used for a long time As a substance for preventing the phenomenon from falling off, specifically, at least one selected from the group consisting of adipic acid, fumaric acid, stearic acid, oleic acid, pilmic 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 force between the crushed stone 810 and the first coating layer 820 may be lowered, and when the upper limit of the organic acid exceeds the upper limit, the crushed stone 810 and the first coating layer 820. Cohesion between the improved but the bonding between the first coating layer 820 and the adhesive layer 830 may be lowered.

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

When the content of cyclohexylamine nitrite is less than the lower limit of the above preferred range, the bonding strength between the crushed stone 810 and the first coating layer 820 and the strength of the first coating layer 820 may be lowered. Cracks may occur during curing.

In addition, the calcium silicate may be used together with the petroleum resin to improve the 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 above preferred range, the bonding force between the first coating layer 820 and the adhesive layer 830 may be lowered. When the calcium silicate content exceeds the upper limit, the first coating layer 820 and the adhesive layer 830 may be reduced. ) May decrease the binding force.

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

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

The resin is a mixture of epoxy resin and calcium carbonate in a weight ratio of 1: 0.1-0.3. When the epoxy resin and calcium carbonate do not satisfy the above range, a resin having a viscosity of 8,000 ± 1,000 cps cannot be obtained. Thus, the adhesive force of the adhesive layer 830 may be lowered.

In addition, the curing agent is a mixture of epoxy amine adducts and polyamides in a weight ratio of 1: 0.6-0.8, when the epoxy amine adducts and polyamides do not satisfy the above range, a curing agent having a viscosity of 200 ± 50 cps It may not be obtained, and thus the adhesive force of the adhesive layer 830 may be lowered.

When the content of the curing agent is out of the preferred range, the adhesive force of the adhesive layer 830 may be lowered.

In addition, the carbon black may not only protect the light-sensitive epoxy resin from light but also increase 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 force may be drastically lowered and the amount of adhesion of the microorganism may be lowered.

In addition, the silicon dioxide is a material that significantly improves the compressive strength when used with epoxy-based resin, the compressive strength may be lowered when the content of silicon dioxide is less than the lower limit of the preferred range, the void is greater than the upper limit May interfere with the formation of.

In addition, the aluminum oxide is used in combination with epoxy resin and silicon dioxide to significantly improve the compressive strength, when the content of aluminum oxide is out of the above range may be lower than the required compressive strength (3.8 MPa).

In addition, the fly ash has a pozzolanic property to improve the strength and durability of the adhesive layer 830. When the content of the fly ash is less than the lower limit of the above preferred range, the strength and durability may be lowered.

In addition, the metakaolin also has pozzolanic properties, significantly improves the strength and durability of the adhesive layer 830 when used with the fly ash. When the content of metakaolin is less than the lower limit of the above preferred range, the strength and durability may not be improved, and when the metakaolin is higher than the upper limit, the strength and durability may be lowered.

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

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

When the calcined calcined dolomite content is out of the above preferred range, pores as desired may not be formed and microorganisms may not be attached in large quantities.

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

In addition, the biostone ball 800 includes a second coating layer 840 coated on the surface of the adhesive layer 830 and formed of a porous structure, so that microorganisms are filled in the pores of the second coating layer 840. Microorganisms that stably grow and proliferate through the pores and microorganisms that stably grow and proliferate in the adhesive layer 830 may be decomposed to perform a self-cleaning operation.

The second coating layer 840 is sprayed with a high-pressure spraying organic and inorganic coating agent on the surface of the cured biostone ball 800 (ie, the biostone ball 800 is coated only on the outside of the biostone ball (800) Outside) is coated on top of the adhesive layer 830), but not inside.

The second coating layer 840 is coated with a high pressure spray is formed with a plurality of pores and a plurality of through holes. Since the organic and inorganic coating agent has a higher content of solids than the content of resin, voids are formed when coating with high pressure spray, and attached to the upper surface of the adhesive layer 830, but some solids are dropped off, thereby forming through holes. . When the organic / inorganic coating agent is coated by a method such as general spray spraying or dipping instead of high pressure spraying, not only the voids are properly formed in the first coating layer 820, but no through holes are formed at all. The void is also formed as a space between the bonded inorganic particles.

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

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 of the second coating layer 840 is greater than the upper limit, no through hole is formed, and solids are easily eliminated to further contaminate the contaminated water. The ability may be impaired.

The second coating layer 840 is 1 to 20 parts by weight, preferably 5 to 10 parts by weight of Shogigit 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, preferably 5 to 10 parts by weight of dolomite; 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; 1 to 10 parts by weight of illite, preferably 5 to 8 parts by weight; And 1 to 10 parts by weight of pearlite, preferably 5 to 8 parts by weight.

The elastomer resin imparts elasticity to the biostone ball 800 to prevent the biostone ball 800 from being damaged by contaminated water as well as to connect and fix the inorganic materials.

In addition, the Schungit powder may not only purify the contaminated water and perform antibacterial activity, but also attach a large amount of microorganisms. If the content of the Schwheat Git is less than the lower limit of the above preferred range, the amount of microorganisms may be reduced, and if it is more than the upper limit, the hardness may be lowered.

In addition, the seaweed powder is a material that can not only attach a large amount of microorganisms but also increase the self-cleaning effect on the contaminated water by growing attached microorganisms, specifically one or more selected from the group consisting of green algae, brown algae and red algae Can be mentioned. As the green algae, thorny blue, blue, haecam, blue, auditory, beaded, jade, salt weekend, etc. may be used; The brown algae may be used seaweed, kelp, brown seaweed, Ecklonia cava, gompi, rhubarb, mabanban, jichungyi, 톳 and the like; The red algae may include, but is not limited to, laver, barley, lobster, kotoni, prawns, starfish, stalk and the like.

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

When the content of the algae powder is less than the lower limit of the preferred range, the amount of microorganisms is reduced and the microorganisms cannot grow, and when it is above the upper limit, contaminants may be generated by the algae powder.

In addition, the iron oxide can remove a small amount of harmful substances contained in the contaminated water and can form a plurality of pores, as well as improve the strength of the first coating layer 820, the internal porosity 22%, external pores 37% and a surface area of 20 m 2 / g is used.

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

In addition, the magnesite can also remove a small amount of harmful substances contained in the contaminated water and can form a plurality of pores, as well as to further improve the strength of the first coating layer 820 when used with iron oxide, the inside A porosity of 75%, an external pore of 45% and a surface area of 200 m 2 / g are used.

If the amount of magnesite is less than the lower limit of the preferred range, the number of pores formed may be reduced, and if it is more than the upper limit, cracks may easily occur.

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

In addition, the dolomite is used together with the elastomer resin to improve the strength of the second coating layer 840 to prevent the second coating layer 840 provided at the outermost portion from being easily detached. When the content of the dolomite is less than the lower limit of the preferred range, the strength of the second coating layer 840 is lowered, so as time passes, the first coating layer 820 may fall off to further contaminate the contaminated water. In this case, the strength of the first coating layer 820 is lowered and may prevent the formation of voids.

In addition, the organic fiber is to improve the adhesion strength and impact resistance of the second coating layer 840, specifically, at least one selected from the group consisting of crushed paper crushed in the fiber state, wood powder and vegetable fibers Can be mentioned.

If the content of the organic fiber is less than the lower limit of the preferred range may not improve the strength and impact resistance, and if the content is above the upper limit, the adhesion strength may be lowered.

In addition, the inorganic fiber as a material to further increase the compressive strength or tensile strength when used in conjunction with the organic fiber as well as to maintain the elasticity of the first coating layer 820, specifically rock wool, glass wool, basalt rock wool and ceramic wool And at least one selected from the group consisting of.

If the content of the inorganic fiber is less than the lower limit of the preferred range may not improve the compressive strength or tensile strength, if the upper limit exceeds the upper limit may no longer improve the effect 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 as well as to form a plurality of voids. When the respective amounts of the illite and pearlite are less than the lower limit of the preferred range, the compressive strength may not be improved, and when the upper limit is exceeded, the compressive strength may be lowered.

The crushed stone 810 is used having an average diameter of 2 to 3 cm, the biostone ball 800 obtained by bonding a plurality of crushed stone 810 of the size is an average diameter of 8 to 12 cm, preferably Is 9 to 10 cm. As shown in Figure 5, the average diameter of the biostone ball 800 should satisfy the above preferred range, both the surface area and the voids are in the excellent range. If the average diameter is less than the lower limit of the above preferred range, the surface area is high, but the pore is low, so that the narrow air gap can increase the flow resistance of the contaminated water, so that clogging may occur. Low self-cleaning effect can be lowered.

In addition, the biostone ball 800 is used in the third filtration unit 323 having a maximum effective depth of 5 m, in general, the maximum stacking of the biostone ball 800 when applied to the third filtration unit 323 The number is 55 ea, the weight of the biostone ball 800 is 0.6-0.7 kg / ea, considering that the force applied to the biostone ball 800 of the bottom layer is 365 to 375 N the biostone ball ( The compressive strength required for 800 should be at least 3.8 MPa. Since the compressive strength of the biostone ball 800 is 4.3 to 4.6 MPa, it shows excellent compressive strength over the required compressive strength.

When the contaminated water passes through the biostone ball 800, the biostone ball 800 is interposed between a plurality of pores formed in the biostone ball 800 (gaps formed in the second coating layer 840 and bonded crushed stone 810). To remove solids by performing physical actions such as diffusion, separation, contact, sedimentation, and attraction of contaminants, and when the microorganisms attached to the pores come into contact with contaminated water, The organic substance and nitrogen component which were contained are also removed.

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

1: Soil-Free Vegetation Foundation
1a: wave face
2: lower laying material
100: sedimentation place
200: vegetation contact filtration paper
210: first vegetation contact flow path
220: second vegetation contact flow path
300: sloped centripetal wetland
310: storage unit
311: overflow wall
320: filtration module
321: first filter
322: second filter
323: third widow
324: curtain
330: discharge part
340: discharge pond
350: filtration frame
360: bulkhead
500: discharge pipe
600: biocarrier
700: filling material
800: Biostone Ball
810: Crushed Stone
820: first coating layer
830: adhesive layer
840: second coating layer
900: horizontal tube
1000: with vegetation water
1010: shielding film
1020: nonwoven fabric
1030: plume tube
1040: Grating

Claims (7)

A storage unit 310 in which contaminated water is stored;
The upper and lower surfaces are sealed, and the upper surface is formed in an inclined shape that becomes lower toward the centripetal direction, and the contaminated water transferred from the storage 310 flows from the outer wall to the inner wall to filter contaminants contained in the contaminated water to generate treated water. Module 320;
An outlet 330 having an upper end opened and discharging the treated water introduced in the centripetal direction from the filtration module 320 upward And
And a discharge pond 340 in which treated water discharged to an upper portion of the discharge part 330 is stored.
The filtration module 320,
Including a plurality of filters in which the pores increase from the outer wall to the inner wall,
A first filtration part 321 accommodating the biocarrier 600 therein;
A second filtration part 322 for receiving a filler 700 coated with a microbial coating solution therein; And
Includes; a third filtration unit 323 for receiving the biostone ball 800 therein;
The first filtration unit 321, the second filtration unit 322 and the third filtration unit 323 are sequentially disposed toward the inner wall from the outer wall of the filtration module 320,
The contaminated water transferred from the storage unit 310 is filtered through the first filtration unit 321, the second filtration unit 322, and the third filtration unit 323 sequentially,
The biostone ball 800,
Multiple crushed stones 810;
The first coating layer 820 is coated on the surface of the crushed stone (810), containing 1 to 20 parts by weight of an organic acid, 0.01 to 10 parts by weight of cyclohexylamine nitrite and 0.01 to 5 parts by weight of calcium silicate based on 100 parts by weight of petroleum resin ;
An adhesive layer 830 applied to the surfaces of the crushed stones 810 to bond the crushed stones 810 to each other; And
And a second coating layer 840 having a porous structure on the surface of the biostone ball 800 formed by combining the crushed stones 810 in which the adhesive layer 830 is formed.
Inclined centripetal wetland that is filled with microorganisms in the pores of the second coating layer 840 to decompose organic matter into microorganisms that stably grow and proliferate through the pores to perform a self-cleaning action.
delete delete The method of claim 1, wherein the filtration module 320,
Sloped centripetal wetland formed in a ring shape.
The method of claim 1, wherein the filtration module 320,
Inclined centripetal wetland that is sealed by sequentially installing the water curtain 324 and the soil-free vegetation base (1) on the upper surface.
The method of claim 1,
Sloped centripetal wetland is installed in the discharge portion 330 and further comprises a filter frame 350 filled with a biostone ball (800).
The method of claim 1,
An inclination further comprising a partition wall 360 installed between the storage unit 310, the first filter unit 321, the second filter unit 322, the third filter unit 323, and the discharge unit 330, respectively. Type centripetal marsh.

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