KR20210003464A - Rain garden using a wetland with centripetal flow - Google Patents

Abstract

The present invention relates to a rain garden using a wetland having a centripetal flow, which includes: a rainwater treating unit (100) including a settlement tank (110) in which sediment included in rainwater flowing in from the outside is settled, a filter (120) fixed to an upper portion of the rainwater treating unit (100) and having a filling space (121) therein, and a plurality of floating filter media (300) filled in the filling space (121) by a predetermined ratio of the volume of the filling space (121); and a wetland (200) having a centripetal flow to filter contaminants included in the rainwater, as the rainwater received from the rainwater treating unit (100) flows toward the center thereof. When the rainwater is filled in the filling space (121) in case of rain, the floating filter media (300) are filled in the filling space (121), floated to the upper portion of the filling space (121) by the rainwater, and compressed such that gaps between the floating filter media (300) are reduced. Foreign substances included in the rainwater are filtered through the contracted gaps between the floating filter members (300).

Description

Rain garden using a wetland with centripetal flow}

The present invention relates to a rainwater garden using a wetland of Gusimhyang.

The rainwater garden or rain garden can be said to be a new concept of'rainwater purification garden' that has been studied to improve water pollution in urban areas. Rainwater gardens use porous soil and cultivate moisture-resistant plants to trap rainwater and allow it to be absorbed into the soil, and then evaporate back into the atmosphere to circulate urban water. If the rainwater garden is used, it is possible to reduce the amount of runoff by 60 to 80% compared to the concrete surface only by planting herbaceous plants, and it is possible to store more than 31% rainwater.

Developed countries such as Germany and the United States use rainwater gardens that can contain as much rainwater as possible around houses and various buildings, but in Korea it is in the early stages of its introduction, and rainwater gardens are not in rural areas with relatively much soil. It is developing in a city that is difficult to find, and it is also the time when more development is needed.

Recently, large-scale landscaping spaces are being created to create an eco-friendly green city, and as interest in creating small gardens at home has increased, interest in plant gardens is also increasing.

As a technology related to such a rainwater garden, a waterway serving as a passage through which rainwater flows in Korean Patent No. 10-0966887; An excellent purification and storage unit in contact with the sidewall of the waterway, but formed by laminating a carrier layer, a fiber filter layer, a nonwoven fabric layer, and an organic soil layer on which plants are planted from below, and communicating with the waterway at a layer below the nonwoven fabric layer; And an improved rain garden comprising a rod-shaped fiber filter that is installed in the organic soil layer at regular intervals and has a lower end of which penetrates the nonwoven fabric layer and connects to the upper surface of the fiber filter layer.

In the prior art, there is a problem in that it is necessary to separately clean the foreign matters filtered in the excellent purification and reservoir.

In addition, in the prior art, as the rainwater flows in one direction from the rainwater purification and reservoir, foreign matter contained in the rainwater is filtered, so that the filtering efficiency of the rainwater, the flow range of the rainwater, and the amount of groundwater penetration of the rainwater are all reduced.

In addition, the prior art has a problem in that it is impossible to respond to changes in the amount of rainwater inflow due to flooding of rainwater exceeding the maximum water level of the waterway during rain.

Korean Patent Registration No. 10-0966887 (2010.06.22)

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a rainwater garden using a wetland in a centripetal direction capable of maximizing the filtration efficiency of floating filters for foreign matter contained in rainwater.

In addition, another object of the present invention is to provide a rainwater garden using a wetland in a centripetal way that can naturally remove foreign matters filtered by a floating filter material.

The rainwater garden using a wetland in the centripetal direction according to the present invention includes a settling tank 110 in which sediment contained in rainwater introduced from the outside is settled, and a filter fixed on the top of the settling tank 110 and having a filling space 121 therein ( 120), and a rainwater treatment unit 100 including a plurality of floating filter materials 300 filled in a predetermined ratio of the volume of the filling space 121; And a centripetal wetland 200 for filtering contaminants contained in the rainwater while the rainwater transferred from the rainwater treatment unit 100 flows in a centripetal direction, wherein the rainwater is in the filling space 121 when it rains. When filled, the air gaps of the floating filter materials 300 are reduced as the floating filter material 300 is floated and compressed to the top of the filling space 121 by the rainwater filled in the filling space 121, and the Foreign matter contained in the rainwater is filtered through the reduced pores of the floating filter material 300.

In addition, when the rainwater filled in the filling space 121 is emptied at the end of the rain, the floating filter material 300 falls to the lower portion of the filling space 121 and the foreign matter trapped in the voids of the floating filter material 300 Flows down.

In addition, it further includes a discharge means for discharging rainwater located under the sedimentation tank 110, wherein the rainwater filled in the filling space 121 is emptied by the discharge means when the rain is over.

In addition, the rainwater treatment unit 100 has a structure with one end blocked and is inserted into the floating filter materials 300, and a perforated pipe 140 having a plurality of pores through which the rainwater transferred from the floating filter materials 300 passes. ; And a communication pipe 150 that communicates the other end of the merit pipe 140 and the wetland 200 in the centripetal direction.

In addition, the sedimentation tank 110 includes a first sedimentation part 111 in which sediment contained in rainwater introduced from the outside is precipitated; An overflow wall 112 having an overflow hole 112a through which the rainwater exceeding a predetermined water level of the first sedimentation part 111 passes; And a second sedimentation unit 113 in which the sediment contained in the rainwater transferred from the overflow hole 112a is settled, wherein the filter 120 is installed in the second sedimentation unit 113, wherein the It is installed at a higher position than the overflow hole 112a.

In addition, the rainwater treatment unit 100 includes a screen 160 installed on the first sedimentation unit 111 to filter out impurities contained in the rainwater flowing into the first sedimentation unit 111.

In addition, the centripetal wetland 200 includes a storage unit 210 in which rainwater transferred from the rainwater treatment unit 100 is stored; And a filtration module 220 whose upper surface is sealed and the rainwater transferred from the storage unit 210 flows from the outer wall to the inner wall to filter contaminants contained in the rainwater to generate treated water.

In addition, the filtration module 220 includes a plurality of filtration units whose voids increase from the outer wall to the inner wall.

In addition, the filtering module 220 includes a first filtering unit 221 for accommodating a plurality of biostone balls 400 therein; And a second filtering unit 222 accommodating a plurality of porous filter media 500 therein.

In addition, both the storage unit 210 and the filtration module 220 are formed in a ring shape.

In addition, the centripetal wetland 200 includes a water barrier 230 for sealing the upper surface of the filtration module 220; And a soil-free vegetation base material 240 installed on the shielding film 230.

In addition, the centripetal wetland 200 includes a discharge unit 250 for discharging the treated water transferred from the inner wall of the filtration module 220 to the upper side; A discharge pond 260 formed on the upper side of the discharge part 250 and storing the treated water discharged from the discharge part 250; And a discharge pipe 270 for discharging the treated water exceeding a preset water level of the discharge pond 260.

Accordingly, the rainwater garden using the wetland in the centripetal direction according to the present invention has the advantage of maximizing the filtering efficiency of the floating filter material for the foreign material included in the rain by filtering the foreign material contained in the rain through the reduced pores of the floating filter material. have.

In addition, the rainwater garden using the centripetal wetland according to the present invention has the advantage of being able to prevent clogging of the floating filter materials and to be able to continuously use the floating filter materials without replacement by naturally removing foreign substances that have been filtered in the voids of the floating filter materials. .

Figure 1 is a schematic diagram showing a rainwater garden using a wetland in the gusimhyang according to the present invention.
Figure 2 is a plan view showing a rainwater garden using a wetland in the gusimhyang according to the present invention.
Figure 3 is a rear view showing a rainwater garden using a wetland gusimhyang according to the present invention.
Figure 4 is a plan view showing a state in which rainwater is filled in the rainwater treatment unit according to the present invention.
Figure 5 is a longitudinal sectional view showing a state in which rainwater is filled in rainy weather of the rainwater treatment unit according to the present invention.
Figure 6 is a cross-sectional view showing a state in which rainwater is filled in rainy weather of the rainwater treatment unit according to the present invention.
Figure 7 is a longitudinal sectional view showing a state in which rain is emptied when the rainy weather ends of the rainwater treatment unit according to the present invention.
Figure 8 is a cross-sectional view showing a state in which rainwater is emptied when the rainstorm ends of the rainwater treatment unit according to the present invention.
9 to 10 are plan views showing the direction of the storm water flow of the wetland in the centripetal direction according to the present invention.
11 is a schematic diagram showing a biostone ball according to the present invention.
12 is a cross-sectional view showing a biostone ball according to the present invention.
13 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.

FIG. 1 is a schematic diagram showing a rainwater garden using a wetland in Gusimhyang according to the present invention, FIG. 2 is a plan view showing a rainwater garden using a wetland in Gusimhyang according to the present invention, and FIG. Figure 4 is a plan view showing a state in which rainwater is filled in the rainwater treatment unit according to the present invention, Figure 5 is a longitudinal sectional view showing a state in which rainwater is filled in the rainwater treatment section according to the present invention, and Figure 6 is an excellence according to the present invention It is a cross-sectional view showing a state in which rainwater is filled in rainy weather of the treatment unit.

As shown in Figures 1 to 3, the rainwater garden using the wetland in the centripetal direction according to the present invention includes a rainwater treatment unit 100 and a wetland in the centripetal direction 200.

The rainwater treatment unit 100 serves to remove sediment and foreign matter contained in rainwater introduced from the outside, and includes a sedimentation tank 110, a filter 120, and a plurality of floating filter materials 300.

The sedimentation tank 110 has a filter 120 and a floating filter material 300 installed therein, and an inlet hole through which rainwater generated during rain is introduced is formed on the upper surface. In addition, sediment contained in the rainwater flowing into the settling tank 110 is accumulated on the bottom surface of the settling tank 110.

Here, the sediment accumulated on the bottom surface of the settling tank 110 may be removed by a vacuum roller or a pump.

The filter 120 may be composed of a mesh network having a filling space 121 therein, and is fixed on the upper portion of the settling tank 110 so that the precipitate deposited in the lower portion of the settling tank 110 does not flow.

The floating filter material 300 is a surface coated with a microbial coating liquid on the surface of the floating particulate matter, and is filled in a predetermined ratio of the volume of the filling space 121 with an extra space in the filling space 121.

Here, the microbial coating liquid is added to a liquid base material in which natural cellulose powder, acetate starch, clay powder, and water are mixed, and at least one of a microbial low-molecular strain, a microbial polymer strain, and a microbial denitrification strain for decomposing organic substances contained in rainwater The microbial low-molecular strain includes at least one of the genus Lactobacillus, the genus Saccharomyces, the genus Rhodo Pseudomonas, and the genus Streptomyces, and the microbial polymer strain is among the mesophilic and thermophilic species of the genus Bacillus. It includes at least one, and the microbial denitrification strain may include at least one of a strain belonging to the genus Cassilla or a strain belonging to the Denitripicans species of the genus Paracocos.

The centripetal wetland 200 filters pollutants contained in the rainwater while the rainwater transferred from the rainwater treatment unit 100 flows in the centripetal direction, and details will be described later.

On the other hand, as shown in Figures 4 to 6, when rain (especially, during heavy rain or rainfall), the sedimentation tank 110 is filled with rainwater, and the filling space 121 inside the filter 120 installed on the top of the settling tank 110 ), the voids of the floating filter material 300 are reduced as the floating filter material 300 is floated and compressed to the upper part of the filling space 121 (ie, free space) by the rain filled in the filling space 121 do. Accordingly, foreign matter contained in the rainwater is filtered through the reduced pores of the floating filter material 300.

Accordingly, in the rainwater garden using the wetland in the centripetal direction according to the present invention, the foreign matter contained in the rainwater is filtered through the reduced pores of the floating filter materials 300, so that the filtering efficiency of the floating filter materials 300 for foreign matter contained in the rainwater is improved. There is an advantage that can be maximized.

On the other hand, the floating filter material 300 is preferably filled at a ratio of 60% to 80% of the volume of the filling space 121, provided that the floating filter material 300 is filled to 60% or less of the volume of the filling space 121 In this case, the floating filter material 300 is easily floated, but the upper and lower thickness of the floating filter material 300 is thin, so that the filtering efficiency of foreign matter is lowered. On the other hand, when the floating filter material 300 is filled to more than 80% of the volume of the filling space 121, the upper and lower thickness of the floating filter material 300 is thick, so that the filtering efficiency of foreign matter of the floating filter material 300 increases, but the floating filter material 300 Their injuries become difficult.

7 is a longitudinal sectional view showing a state in which rainwater is emptied when the rainstorm ends of the rainwater treatment unit according to the present invention, and FIG. 8 is a cross-sectional view showing a state in which rainwater is emptied when the rainwater treatment section according to the present invention ends.

7 to 8, when the rain filled in the filling space 121 is emptied at the end of the rain, the floating filter material 300 falls to the lower portion of the filling space 121 and is Foreign matter that was filtered flows down.

A detailed description of a process in which foreign matters that have been filtered through the voids of the floating filter materials 300 flow down will be described in detail.

First, when the rainwater filled in the filling space 121 is emptied, while the floating filter materials 300 fall along the lowering water level of the filling space 121, the floating filter materials 300 are open to each other. The void is expanded. Accordingly, foreign matter that has been filtered in the voids of the floating filter materials 300 easily flows down from the expanded voids of the floating filter materials 300.

Next, when the rainwater filled in the filling space 121 is completely emptied, the floating filter material 300 is compressed to the lower portion of the filling space 121, so that foreign matter filtered in the voids of the floating filter material 300 flows down by gravity. .

Accordingly, in the rainwater garden using the wetland in the centripetal direction according to the present invention, foreign substances that have been filtered in the voids of the floating filter materials 300 are naturally removed, thereby preventing clogging of the floating filter materials 300, and There is an advantage that it can be used continuously without replacement.

On the other hand, when the rainwater filled in the filling space 121 is emptied at the end of the rain, the rainwater filled in the filling space 121 is naturally dried by the sun or the rainwater filled in the filling space 121 is discharged from the sedimentation tank 110. It may be forcibly discharged by a discharge means for discharging rainwater located at the bottom.

Here, the discharge means may be a discharge pipe 130 penetrating the bottom surface of the settling tank 110.

Referring to FIG. 1, the rainwater treatment unit 100 filters foreign matter contained in rainwater that has passed through the pores of the floating filter material 300 and transmits it to the wetland 200 in the centripetal direction. It may include a communication tube 150.

The perforated pipe 140 has a structure in which one end is blocked and the other end is opened, one end is inserted into the floating filter media 300, and has a plurality of pores through which rainwater transferred from the floating filter material 300 passes. Accordingly, the rainwater transported from the floating filter material 300 passes through the perforations, and the foreign matter contained in the rainwater is filtered 120.

The communication pipe 150 communicates the other end of the merit pipe 140 and the wetland 200 in Gusim Hyang. Accordingly, the running water transferred from the merit pipe 140 is transmitted to the old wetland 200 through the communication pipe 150.

In addition, a plurality of pipe bodies to which the perforated pipe 140 and the communication pipe 150 are connected may be arranged and installed.

Accordingly, even if any one of the pipe bodies is blocked, rainwater can flow to the other pipe body.

Meanwhile, a partition wall 600 may be installed between the communication pipe 150 and the afferent wetland 200, and a connection pipe 170 may be installed between the bulkhead 600 and the afferent wetland 200.

The bulkhead 600 may be replaced with a stone for embankment wrapped with barbed wire, a soil wall in which a transfer pipe is embedded, or a concrete wall in which a transfer pipe is embedded.

4 to 8, the settling tank 110 may include a first settling part 111, a overflow wall 112, a second settling part 113, a screen 160, and a discharge pipe 270. have.

The first sedimentation part 111 is a chamber formed inside the sedimentation tank 110, and sediments contained in rainwater introduced from the outside are precipitated.

The overflow wall 112 divides the interior of the sedimentation tank 110 into a first sedimentation unit 111 and a second sedimentation unit 113, and rainwater exceeding a predetermined water level of the first sedimentation unit 111 passes through. Overflow holes 112a are formed.

The second sedimentation unit 113 is a chamber formed in the sedimentation tank 110, and sediment contained in the rainwater transferred from the overflow hole 112a is precipitated.

The screen 160 is installed in the first sedimentation unit 111 to filter out impurities contained in rainwater introduced into the first sedimentation unit 111.

On the other hand, the filter 120 is installed in the second sedimentation portion 113, it is installed at a higher position than the overflow hole (112a). Accordingly, the sediment contained in the rainwater transferred from the overflow hole 112a to the second sedimentation unit 113 flows into the filter 120 and is filtered through the voids of the floating filter material 300 filled in the filter 120 to float. It can be prevented from lowering the filtering efficiency of the filter medium 300.

In addition, although an example in which the second settling unit 113 is configured between the pair of first settling units 111 is illustrated in the drawing, the present invention is not limited thereto.

9 to 10 are plan views showing the direction of storm water flow of the wetland in the centripetal direction according to the present invention.

1, 2, 3, 9, and 10, the wetland 200 includes a storage unit 210, a filtration module 220, a discharge unit 250, and a discharge pond 260. do.

The storage unit 210 may be formed in a ring shape, and the rainwater transferred from the rainwater treatment unit 100 or the communication pipe 150 is stored.

A soil-free vegetation base material 240 may be floatingly installed in the storage unit 210.

Here, the soil-free vegetation base material 240 is made of a buoyant material with buoyancy, and may be composed of a synthetic material mat such as PE (polyethylene) or a natural material mat wrapped with a mesh mesh, and a perforation for vegetation of aquatic plants is It is formed, and is composed of soil-free as the soil-free vegetation base material 240 replaces the role of soil.

Such, soil-free vegetation base material 240 physically and biologically removes pollutants contained in rainwater stored in the storage unit 210 by using the roots of aquatic plants and microorganisms generated in the aquatic plants, and blocks sunlight. It is possible to prevent the occurrence of green algae in the storage unit 210.

And, when the soil-free vegetation base material is floatingly installed in the storage unit 210, perennial water purification plants with good water quality purification efficiency such as reeds, cattails, moonroots, and yellow irises are planted on the soil-free vegetation base material, and periodically It is desirable to mow.

The filtering module 220 may be formed in a ring shape, and the upper surface is sealed and has a structure that is open from the outer wall to the inner wall, and the lower surface is open, and the rainwater transferred from the storage unit 210 is transferred from the outer wall to the inner wall, that is, centripetal As it flows in the direction, pollutants contained in rainwater are filtered and converted into treated water. In this case, the treated water may be discharged through the inner wall of the filtration module 220 and may be discharged through the permeable hole 223 formed on the lower surface of the filtration module 220.

In addition, the filtration module 220 may be configured as an inclined surface in which the upper surface decreases toward the center, and a water barrier 230 and a soil-free vegetation base material may be sequentially installed on the inclined surface.

The water shielding film 230 may be formed of a non-woven fabric film, and serves to block good communication between the filtration module 220 and the discharge pond 260 to be described later by sealing the upper surface of the filtration module 220.

The soil-free vegetation base material may be fixed to the water barrier 230 through a wire or cable tie installed between the upper end of the outer wall and the upper end of the inner wall of the filtration module 220.

And, when the soil-free vegetation base material is installed on the shielding membrane 230, it is preferable that underwater plants are vegetated among aquatic plants, according to the immersion in the treated water of the discharge pond 260 to be described later, and the outer wall of the filtration module 220 The waterside plant community including a willow, a scallop, a silver grass, and a Buddha flower based on the direction from the to the inner wall (ie, the centripetal direction); 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.

Meanwhile, the filtration module 220 may include a plurality of filtration units whose voids increase from the outer wall to the inner wall.

In addition, the filtering module 220 may include a first filtering unit 221 and a second filtering unit 222.

In addition, the first filtering unit 221 and the second filtering unit 222 are sequentially disposed from the outer wall of the filtering module 220 toward the inner wall, and the void of the second filtering unit 222 is the first filtering unit 221 It is composed of a structure that is wider than the void of ).

The first filtering unit 221 accommodates a plurality of biostone balls 400 therein.

Details of the biostone ball 400 will be described later.

The second filtering unit 222 accommodates a plurality of porous filter media 500 therein.

The porous filter material 500 is obtained by coating an artificial aggregate, gravel, or granular material having a function of equivalent or higher crushed rock with the above-described microbial coating solution and then drying.

The discharge unit 250 may be formed in a cylindrical shape on the inner wall of the filtration module 220, both top and bottom are open, and the treated water discharged to the inner wall of the filtration module 220 flows in the centripetal direction. In addition, the treated water filled in the discharge unit 250 is discharged to the upper side of the discharge unit 250.

The discharge pond 260 is formed on the upper side of the discharge unit 250 and stores the treated water discharged from the upper end of the discharge unit 250.

The discharge pipe 270 discharges the treated water that exceeds the predetermined water level of the discharge pond 260. In addition, the treated water discharged from the discharge pipe 270 may be delivered to a sewage treatment plant or a river.

Accordingly, the present invention has an advantage capable of responding to changes in the amount of rainwater inflow by discharging rainwater exceeding the maximum water level of the discharge pond 260 to the discharge pipe 270.

In addition, the present invention has the advantage of increasing the filtration efficiency of the rainwater, the flow range of the rainwater, and the amount of groundwater penetration of the rainwater by filtering out foreign matter contained in the rainwater as it flows in the centripetal direction in the centripetal wetland.

Meanwhile, a partition wall 600 may be installed between the storage unit 210 and the first filtering unit 221, and a partition wall 600 is installed between the first filtering unit 221 and the second filtering unit 222 Can be.

The bulkhead 600 may be replaced with a stone for embankment wrapped with barbed wire, 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.

And in order to prevent clogging of the biostone ball 400 accommodated in the first filter unit 221 and the porous filter material 500 accommodated in the second filter unit 222, a plurality of washing nozzles (not shown) are provided on the partition wall 600. City) can be installed.

These washing nozzles may spray washing water for washing foreign substances filtered by the biostone ball 400 and foreign substances filtered by the porous filter medium 500.

11 is a schematic diagram showing a biostone ball according to the present invention, FIG. 12 is a cross-sectional view showing a biostone ball according to the present invention, and FIG. 13 is a diagram showing a process of decomposing solid organic matter through the pores of the biostone ball according to the present invention. It is a state diagram.

11 to 13, the biostone ball 400 includes a plurality of carriers 410, a first coating layer 420, an adhesive layer 430, and a second coating layer 440.

The carrier 410 may be one or more selected from the group consisting of gravel, ceramic, plastic, glass, and vermiculite.

The first coating layer 420 is coated on the carriers 410, and 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 420 is coated on the surface of the carrier 410 to improve the bonding between the carrier 410 and the adhesive layer 430, thereby preventing the carrier 410 from being separated from the adhesive layer 430. I can.

The thickness of the first coating layer 420 is 0.01 to 1 mm, preferably 0.05 to 0.5 mm.

However, when the thickness of the first coating layer 420 is less than the lower limit of the preferred range, the bonding force between the first coating layer 420 and the adhesive layer 430 may be reduced.

Petroleum resin is a material that improves the bonding strength between the first coating layer 420 and the adhesive layer 430, specifically rosin paper, terepene resin, or a mixture thereof, preferably rosin paper. have.

In addition, when the adhesive layer 430 is directly formed on the carrier 410 by improving the bonding force between the carrier 410 and the first coating layer 420, the adhesive layer 430 is removed from the carrier 410 when used for a long period of time. 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 410 and the first coating layer 420 may decrease, and when the content of the organic acid exceeds the upper limit, the bonding strength between the carrier 410 and the first coating layer 420 Is improved, but the bonding force between the first coating layer 420 and the adhesive layer 430 may decrease.

In addition, cyclohexylamine nitrite is a material that is used together with an organic acid to improve the bonding strength between the carrier 410 and the first coating layer 420 as well as the strength of the first coating layer 420.

If the content of the cyclohexylamine nitrite is less than the lower limit of the preferred range, the bonding strength between the carrier 410 and the first coating layer 420 and the strength of the first coating layer 420 may decrease, and if the content exceeds the upper limit, a subsequent curing process Cracks may occur in the

In addition, calcium silicate may be used together with petroleum resin to improve bonding strength between the first coating layer 420 and the adhesive layer 430.

When the content of calcium silicate is less than the lower limit of the preferred range, the bonding strength between the first coating layer 420 and the adhesive layer 430 may decrease, and when the content of the calcium silicate exceeds the upper limit, the first coating layer 420 and the adhesive layer 430 Cohesion may decrease.

The adhesive layer 430 is applied to the surfaces of the carriers 410 to bond the carriers 410 to each other.

At this time, the adhesive layer 430 is mixed in a weight ratio of 1: 0.6-0.8 of epoxy amine adduct and polyamide 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. 40 to 60 parts by weight of the curing agent, 0.5 to 1 parts 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, polyoxy It may include 0.01 to 10 parts by weight of ethylene-polypropylene glycol copolymer and 0.01 to 10 parts by weight of calcined dolomite.

The resin agent 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 range, a resin agent having a viscosity of 8,000 ㅁ1,000 cps cannot be obtained. Accordingly, the adhesive strength of the adhesive layer 430 may decrease.

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 range, a curing agent having a viscosity of 200 ㅁ50 cps can be obtained. It is not possible, and accordingly, the adhesive strength of the adhesive layer 430 may be lowered.

When the content of the curing agent is out of the preferred range, the adhesive strength of the adhesive layer 430 may be lowered.

In addition, 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 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, 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, the formation of voids is prevented. It can interfere.

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

In addition, fly ash has pozzolanic properties and is a material that improves the strength and durability of the adhesive layer 430. When the content of fly ash is less than the lower limit of the preferred range, strength and durability may be deteriorated.

In addition, metakaolin also has pozzolanic properties, and significantly improves the strength and durability of the adhesive layer 430 when used with fly ash. 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 rather decrease.

In addition, the polyoxyethylene-polypropylene glycol copolymer prevents the formation of cracks in the adhesive layer 430 upon 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, calcined dolomite is a carbonate mineral of dolomite, which is calcined at 900 to 1,000 degrees, and contains 32 to 35% by weight of magnesium oxide (MgO), and 50 to 50% by weight of calcium oxide (CaO). It contains 55% by weight, and when used with a polyoxyethylene-polypropylene glycol copolymer, a large number of pores can be easily formed. If 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 430.

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

The adhesive made of materials has excellent adhesion to the first coating layer 420 by having an adhesive strength of 110 to 150 kg/cm 2, and the contactable pot life is 30 to 40 minutes, and re-adhesion is easy within the pot life.

The second coating layer 440 is coated only on the outside of the biostone ball 400 by spraying an organic/inorganic coating agent on the surface of the cured biostone ball 400 by high-pressure spray (that is, from the outside of the biostone ball 400). It is coated on the adhesive layer 430), and is not coated inside.

In addition, microbes are filled in the pores of the second coating layer 440 to perform self-cleaning by decomposing organic matter into microorganisms that stably grow and proliferate through the pores and microorganisms that stably grow and proliferate in the adhesive layer 430 I can do it.

In addition, the second coating layer 440 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 430, some solids are removed and through holes are formed. . In the case of coating the organic/inorganic coating agent by a method such as general spray spraying or immersion instead of high-pressure spraying, voids are not properly formed in the first coating layer 420 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 440. The microorganism used in the biostone ball 400 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 440 is 0.05 to 1 mm, preferably 0.1 to 0.5 mm. When the thickness of the second coating layer 440 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 dropped out, further contaminating contaminated water, and self-cleaning ability. It can be degraded.

The second coating layer 440 may include 1 to 20 parts by weight, preferably 5 to 10 parts by weight of Schungit 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; 1 to 10 parts by weight of illite, 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 the biostone ball 400 from being damaged by contaminated water by imparting elasticity to the biostone ball 400, but also connects and fixes inorganic materials to each other.

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

In addition, 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 lifted. As the green algae, thorny green, blueberry, haekham, green, auditory, beaded hearing, jade vine, beadjumal, etc. may be used; As brown algae, seaweed, kelp, seaweed, Ecklonia cava, gompi, rhubarb, hathaban, worms, and tot may be used; As red algae, seaweed, scallop scallop, buldeung sashiri, kotoni, scallop lobster, scallop scallop, scallop scallop, and the like may be used, but are not limited thereto.

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

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

In addition, iron oxide is capable of removing traces of harmful substances contained in contaminated water and not only can form a number of voids, but also improves the strength of the first coating layer 420, and has an inner porosity of 22% and an outer void of 37. %, a surface area of 20 m2/g is used.

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

In addition, magnesite can also remove traces of harmful substances contained in contaminated water, and can form a large number of voids, as well as further improving the strength of the first coating layer 420 when used with iron oxide. Use 75%, 45% external voids, 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 formed voids may be reduced, and when the content exceeds the upper limit, cracks may easily occur.

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

In addition, dolomite is a material that improves the strength of the second coating layer 440 by being used together with an elastomer resin, and prevents the second coating layer 440 provided on the outermost surface from easily falling off. If the content of dolomite is less than the lower limit of the preferred range, the strength of the second coating layer 440 is lowered and the first coating layer 420 may fall off over time to further contaminate the contaminated water, and if it exceeds the upper limit, The strength of the first coating layer 420 may decrease and may hinder the formation of voids.

In addition, the organic fiber improves the adhesion strength of the second coating layer 440 and improves the impact resistance, and specifically, at least one selected from the group consisting of crushed paper crushed in a fibrous state, wood powder, and vegetable fiber. I can.

If 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 if it exceeds the upper limit, the 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 with organic fibers, but also maintains the elasticity of the first coating layer 420, specifically composed of rock wool, glass wool, basalt wool, and ceramic wool. One or more selected from the group 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, illite and pearlite may be used together to improve the compressive strength of the first coating layer 420 and form a plurality of voids. When each content of illite and pearlite is less than the lower limit of the preferred range, the compressive strength may not be improved, and when it exceeds the upper limit, the compressive strength may be lowered.

The carrier 410 is used with an average diameter of 2 to 3 cm, and the biostone ball 400 obtained by bonding a plurality of carriers 410 of the size has an average diameter of 8 to 12 cm, preferably 9 to It is 10 cm. As shown in FIG. 5, when the average diameter of the biostone ball 400 satisfies a desirable 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 desired range, the surface area is high, but the pores are low, so the flow resistance of contaminated water increases due to the narrow pores, which may cause clogging. The effect may be reduced.

In addition, the biostone ball 400 is used in the first filtering unit 221 having a maximum effective depth of 5 m. In general, when applied to the first filtering unit 221, the maximum number of stacks of the biostone ball 400 is 55 ea, the weight of the biostone ball 400 is 0.6-0.7 kg/ea, and considering that the force applied to the biostone ball 400 of the bottom layer is 365 to 375 N, the biostone ball 400 required The compressive strength should be 3.8 MPa or higher. Since the compressive strength of the biostone ball 400 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 biostone ball 400, the biostone ball 400 includes a plurality of voids formed in the biostone ball 400 (a void formed in the second coating layer 440, a void formed between the adhered carrier 410). Etc.), not only removes solids by performing physical actions such as diffusion, separation, contact, precipitation, and attraction of contaminants, but also organic matter contained in contaminated water by microorganisms when microorganisms attached to pores come into contact with contaminated water. Nitrogen components and the like are also removed.

On the other hand, a base layer 10 having a plurality of gravel may be installed on the lower side of the rainwater treatment unit 100 and the lower side of the centripetal wetland 200.

The base layer 10 serves to prevent the lower side of the rainwater treatment unit 100 and the wetland 200 in the centripetal direction from subsidence.

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.

100: excellent treatment department
110: settling tank
111: 1st sedimentation part
112: Overflow wall
112a: Overflow Hall
113: second sedimentation section
120: filter
121: filling space
130: discharge pipe
140: Merit Hall
150: communication pipe
160: screen
170: connector
200: Gusimhyang Wetland
210: storage unit
220: filtration module
221: first filter unit
222: second filter unit
223: pitcher hole
230: water curtain
240: soil-free vegetation base material
250: discharge unit
260: discharge pond
270: discharge pipe
300: floating filter material
400: Bio Stone Ball
410: carrier
420: first coating layer
430: adhesive layer
440: second coating layer
500: porous filter material
600: bulkhead
10: base layer

Claims (12)

The sedimentation tank 110 in which the sediment contained in the rainwater introduced from the outside is settled, the filter 120 fixed on the top of the sedimentation tank 110 and having a filling space 121 therein, and the volume of the filling space 121 An excellent treatment unit 100 including a plurality of floating filter materials 300 filled at a predetermined ratio of; And
Including; a centripetal wetland 200 for filtering contaminants contained in the rainwater while the rainwater transferred from the rainwater treatment unit 100 flows in a centripetal direction,
When the rainwater is filled in the filling space 121 during rain,
As the floating filter material 300 is floated and compressed to the upper portion of the filling space 121 by the rainwater filled in the filling space 121, the voids of the floating filter material 300 are reduced,
A rainwater garden using an old wetland in which foreign matter contained in the rainwater is filtered through the reduced voids of the floating filter materials 300.
The method of claim 1,
When the rainwater filled in the filling space 121 is emptied at the end of the rain,
A rainwater garden using a wetland in a centripetal direction in which the foreign matters that have been filtered through the voids of the floating filter materials 300 flow down as the floating filter materials 300 fall below the filling space 121.
The method of claim 2,
It further comprises a; discharge means for discharging rainwater located under the sedimentation tank 110,
A rainwater garden using a wetland in a centripetal direction in which the rainwater filled in the filling space 121 is emptied by the discharge means when the rainy weather ends.
The method of claim 1,
The excellent treatment unit 100,
A perforated pipe 140 having a structure of which one end is blocked and inserted into the floating filter media 300 and having a plurality of pores through which the rainwater transferred from the floating filter material 300 passes; And
A rainwater garden using a wetland in the old hearthyang including; a communication pipe 150 for communicating the other end of the merit pipe 140 and the wetland 200 in the old hearthyang.
The method of claim 1,
The sedimentation tank 110,
A first sedimentation part 111 in which sediment contained in rainwater introduced from the outside is precipitated;
An overflow wall 112 having an overflow hole 112a through which the rainwater exceeding a predetermined water level of the first sedimentation part 111 passes; And
Includes; a second sedimentation part 113 in which the precipitate contained in the rainwater transferred from the overflow hole 112a is precipitated,
The filter 120 is installed in the second sedimentation unit 113, the rainwater garden using a wetland in a centripetal direction, which is installed at a position higher than the overflow hole 112a.
The method of claim 5,
The excellent treatment unit 100,
A rainwater garden using an old wetland including a screen 160 installed in the first sedimentation unit 111 to filter out impurities contained in the rainwater introduced into the first sedimentation unit 111.
The method of claim 1,
The Gusimhyang wetland 200,
A storage unit 210 in which rainwater transferred from the rainwater treatment unit 100 is stored; And
The upper surface is sealed, the rainwater transferred from the storage unit 210 flows from the outer wall to the inner wall, and a filtering module 220 for filtering pollutants contained in the rainwater to generate treated water; Rainwater garden using.
The method of claim 7,
The filtration module 220,
A rainwater garden using a wetland in the centripetal direction that includes a plurality of filtration units whose voids increase from the outer wall to the inner wall.
The method of claim 8,
The filtration module 220,
A first filtering unit 221 accommodating a plurality of biostone balls 400 therein; And
A rainwater garden using a wetland in a centripetal direction including a second filter unit 222 for accommodating a plurality of porous filter media 500 therein.
The method of claim 8,
A rainwater garden using a wetland in which the storage unit 210 and the filtration module 220 are both formed in a ring shape.
The method of claim 8,
The Gusimhyang wetland 200,
A water barrier 230 sealing the upper surface of the filtration module 220; And
Rainwater garden using a wetland in the old heart including; soil-free vegetation base material 240 installed on the shielding film 230.
The method of claim 8,
The Gusimhyang wetland 200,
A discharge unit 250 through which the treated water transferred from the inner wall of the filtration module 220 is discharged upward;
A discharge pond 260 formed on the upper side of the discharge part 250 and storing the treated water discharged from the discharge part 250; And
A rainwater garden using a wetland in a centripetal direction including a discharge pipe 270 for discharging the treated water exceeding a predetermined water level of the discharge pond 260.

Images