KR101012749B1 - Open Rainwater Treatment Unit - Google Patents

Abstract

The present invention relates to a device for treating (draining and infiltrating) stormwater generated from a road or a housing complex, and has excellent purification ability of contaminants and groundwater infiltration for the initial stormwater, and easy to secure space for constructing the device. An open stormwater treatment apparatus is provided. The stormwater treatment apparatus 1 according to the present invention includes a storage space 15 partitioned lower than the ground surface 3 so that inflow and temporary storage of the storm water 2 flowing through the ground surface 3 are possible. The ground planting part 10 is planted; An infiltration filtration unit 20 which is stacked below the planting soil 12 of the above-ground planting unit 10 and infiltrates the rainwater 2 to filter contaminants in the rainwater 2; The drain 31 which is stacked below the permeation filtration part 20 and passes through the permeation filtration part 20 is stored, and discharges the stored rainwater 2 to the existing storm drain 4. The lower reservoir 30 is provided; A rainwater inlet 40 for introducing the rainwater 2 of the ground surface 3 into the above-ground planting part 10 and for introducing the rainwater 2 introduced into the permeation filter 20; And the rainwater overflowing part 50 which leads the rainwater 2 to the lower reservoir 30 before the rainwater 2 reaches the full water level in the water storage space 15 of the above-ground planting part 10; It includes.

Description

Open-type Initial Rainwater Treatment Equipment

The present invention relates to a stormwater treatment device, and more particularly, to a device for treating stormwater generated in a road or a housing estate, etc., having an excellent ability to purify pollutants and groundwater infiltration for the initial stormwater, and constructing the device. The present invention relates to an open rainwater treatment device that is easy to secure space for.

Increasing impermeability due to dense urban development and sudden heavy rains are limiting the ability to cope with flooding through sewage pipes and streams.Increasing impermeability due to urban development accelerates the desertification of cities and impedes the penetration of rainwater into groundwater. This causes many problems in the soil ecosystem.

Rainwater washes away various contaminants (non-point contaminants) such as heavy metals, organics, and oil deposited on the surface of the earth and becomes contaminated by these pollutants. If it is discharged to a river or the sea without proper treatment, it is the cause of water pollution. Therefore, the initial runoff pollution is one of the important nonpoint sources.

'Non-point source', also called non-specific source or surface source, is a source of pollution that has a wide and unspecific discharge path, such as urban road drainage by rainfall, unlike point source, which has a specific discharge path. When it comes to rain, it is discharged in the form of rainwater containing various kinds of pollutants such as traffic pollutants, dust and trash, and air pollutants in the surface drop. It is very large, difficult to predict and quantify pollution, and has characteristics that are highly influenced by weather conditions, geology, and topography, which are difficult to control artificially, and it is difficult to systematically set emission standards.

Considering the fact that water pollution and water shortage are becoming global issues due to urban development and population growth, Korea is also a water shortage country, considering that the rainfall is concentrated in summer, dams, rainwater pumping stations, reservoirs, reservoirs, etc. It is necessary to secure ecological soil environment and mitigate urban desertification through various devices such as rainwater use, infiltration, and storage that manage rainwater that occurs in the region along with rainwater management.

A general stormwater treatment device is a device for installing an oil reservoir at the end of a basin in order to bury stormwater drainage and discharge rainwater collected by stormwater drainage to a river. However, such a conventional storm water drainage device has a heavy load in a pumping station or other facilities during heavy rains, or contaminants such as heavy metals, organic matter, and oils contained in rainwater in urban areas flow into the reservoir and flow out into rivers. May cause.

Accordingly, eco-friendly stormwater penetration measures have been widely proposed to reduce the amount of runoff by naturally penetrating into the soil or storing water before the rainwater enters the reservoir.

Rainwater penetration devices are being attempted as a security measure to improve the centralized rainwater management problem, and there are types of landfills or pretreatment-focused types in existing facilities. However, existing devices have limitations in terms of completeness and inferiority from the point of view of element technology or device technology, and they cannot be connected with technologies such as landscaping, civil engineering, and complex planning for ecological external space creation. It does not cope and has only temporary storage or drip penetration.

In particular, in an environment with a narrow site and high land price, such as a city in South Korea, a storm water treatment device that can save space is required.

An object of the present invention is to provide an apparatus for treating rainwater generated in a road or a housing complex, and particularly, an open rainwater treatment device having excellent purification ability of contaminants for contaminated initial rainwater and good groundwater penetration. It is to provide.

Another object of the present invention is not only a good initial pollutant purification ability and excellent groundwater penetration, but also in the condition that difficult to secure the site for the construction of the device, without the burden of site acquisition, the initial excellent pollutant treatment, excellent It is an object of the present invention to provide an open stormwater treatment device that integrates infiltration and storage functions.

Another object of the present invention is to install the green vegetation facilities built on the roadside, while maintaining the green space in the environment in which the green space is encroached by the continuous urbanization, while connecting to the existing storm water It is to provide an open rainwater treatment device that can be installed by.

Another object of the present invention is to provide an open rainwater treatment apparatus that can be applied in the environment of heavy rainfall rainfall by being able to cope with the load fluctuations of rain from small rainfall to heavy rain.

Another object of the present invention is to provide an open stormwater treatment apparatus that can collectively manage the non-point source in the drainage area by appropriately adjusting the unit of the device according to the rainwater or drainage area, such as rainwater treatment environment.

According to the present invention, an open stormwater treatment apparatus is provided.

The open rainwater treatment device according to the present invention includes a ground planting part, a penetrating filtration part, a lower reservoir part, a rainwater inflow part and a rainwater overflow part.

The above-ground planting part has a storage space partitioned lower than the ground surface to allow the inflow and temporary storage of rainwater flowing through the ground surface, and various plants are planted.

The penetrating filtration unit is laminated under the planting soil of the above-ground planting part, and the rainwater penetrates to filter contaminants in the rainwater.

The lower reservoir has a discharge port which is stacked below the infiltration filtration part to store the rainwater that has passed through the infiltration filtration part and discharges the stored rainwater to an existing storm drain.

The rainwater inlet unit introduces the rainwater on the ground surface to the ground planting unit, and induces the rainwater introduced into the penetration filtration unit.

The rainwater overflowing section guides the rainwater to the lower reservoir before the rainwater reaches a full water level in the reservoir space of the above-ground planting part.

Preferably, the above ground planting portion is divided into a boundary stone to form the reservoir space, and the lower end of the boundary stone extends to the penetration filtration unit in a state spaced apart from the upper portion of the lower reservoir by a predetermined distance, and the boundary stone and Between the lower reservoirs form a passageway through which a portion of the rainwater penetrates into the surrounding soil.

Preferably, the permeation filtering part is laminated between an upper filter medium layer capable of penetrating the rainwater and filtering contaminants from the rainwater, and the filter medium layer and the lower reservoir, such that the filter medium layer falls into the lower reservoir. And a filter mat to prevent it.

Preferably, the rainwater inlet may include an inlet capable of opening and closing the rainwater from the ground surface to the ground planting portion, and an inflow tube filled with a filter medium for inducing the rainwater introduced into the inlet to the infiltration portion. do.
When the open stormwater treatment apparatus according to the present invention is applied to an existing city instead of a newly constructed new city, it may be difficult to construct the lower reservoir due to spatial limitations. In such an environment, the rainwater treatment device of the present invention may omit the lower reservoir and directly discharge the rainwater that has passed through the permeation filter to the existing stormwater drainage.

The open rainwater treatment system according to the present invention has the following effects.

First, the stormwater treatment apparatus of the present invention, by inducing the initial rainwater purification and stormwater penetration for rainwater generated in the road or residential complex, effectively protect the non-point pollution source of the initial rainfall to protect the ecosystem such as soil, rivers and lakes It can be expected to alleviate the heat island effect of the city due to stormwater penetration and the storage effect of rainwater.

Second, the rainwater treatment device of the present invention can realize the contaminant treatment, rainwater penetration and storage of the initial rainwater without a large burden on the land security under conditions that it is difficult to secure the site for the device construction.

Third, the rainwater treatment device of the present invention can be installed in an open type while maintaining a vegetation facility constructed on a roadside, and thus, it is possible to expand the green space in an environment where green space is encroached by continuous urbanization. It can be installed in conjunction with the storm pipe.

Fourth, the stormwater treatment apparatus of the present invention can be effectively applied to an environment in which rainfall is severely biased by being able to actively cope with load fluctuations of stormwater from small rainfalls to heavy rains.

Fifth, the rainwater treatment apparatus of the present invention can collectively manage the non-point source in the drainage area by appropriately adjusting the unit of the rainwater treatment environment.

Sixth, the conventional rainwater management device has a problem that its maintenance is difficult, because the rainwater management device according to the present invention has a relatively low need for post management, it is applied to the road or residential area difficult to maintain non-point source management It can work.

Hereinafter, with reference to the accompanying drawings will be described in more detail the open rain treatment apparatus according to the present invention. The following embodiments are merely illustrative of the stormwater treatment apparatus according to the present invention, and are not intended to limit the scope of the present invention.

The open stormwater treatment apparatus 1 according to the present invention is an apparatus that can be installed in an open manner using a vegetation space commonly installed on a roadside or a central separator as an installation space, and can be installed in conjunction with an existing stormwater conduit 4. Therefore, the device 1 of the present invention is preferably installed in accordance with the gradient of the existing storm drain 4, which treats the storm water 2 from the ground surface 3 such as a road.

Rainwater treatment device 1 according to the present invention can be referred to as a kind of linear penetration device which is one of the decentralized rainwater management device for the purpose of rainwater treatment in roads and residential areas.

As shown in Figure 1, the stormwater treatment apparatus 1 of the present invention, the above-ground planting part 10, infiltration filtration part 20, lower reservoir 30, rainwater inlet 40 and rainwater overflow section (50) is basically included.

The ground planting part 10 is partitioned a little lower than the ground surface 3 so as to allow the rainwater 2 flowing through the ground surface 3 such as a road to flow in and temporarily store water depending on the situation. Form. In the ground planting section 10, various plants 11 such as shrubs or grass are planted. For example, the bottom of the ground planting part 10 is formed about 20-40 cm lower than the ground surface 3, and is filled with planting soil 12 for smooth growth of the planted plant 11, The boundary is divided into, for example, a concrete boundary stone 13 to form a storage space 15 that is isolated from the external environment, thereby allowing the inflow and temporary storage of rainwater 2.

As shown in Fig. 1, the boundary stone 13 is an infiltration filtration unit 20 which will be described later in order to prevent the discharged water 2, which is less contaminated, is discharged directly to the adjacent foundation soil 5. It is preferable to install so as to extend to, and at this time, the lower end of the boundary stone 13 is maintained at a predetermined interval with the lower reservoir 30, the rainwater (2) of the infiltration filtration unit 20 to the surrounding foundation soil (5) A discharge passage 14 may be formed.

Thus, since the uppermost part of the apparatus 1 of the present invention is composed of the above ground planting part 10, the existing vegetation space provided on the road or the like can be utilized to construct the stormwater treatment device, and conversely, the stormwater treatment device of the present invention ( Since 1) can be used as a vegetation space, it is not necessary to secure a separate space for the construction of storm water treatment device, thus saving the space required for the device construction, and consequently, it is possible to gear to the conservation and expansion of the green space. .

In addition, the device (1) of the present invention can partially decompose pollutants of rainwater (2) by the natural biological decomposition of the plant (11) and the planting soil (12) constituting the ground planting portion (10) Pollutant purification is very environmentally friendly.

In addition, since the device 1 of the present invention is landscaped by the plant 11 and the boundary stone 13 of the ground planting part 10, there is an effect that can produce an environment-friendly space suitable for roads and the like, The shape and size of (10) can be variously determined depending on the installation place.

The penetrating filtration unit 20 is stacked below the above-ground planting unit 10 to penetrate the rainwater 2 and to filter various contaminants contained in the rainwater 2 penetrated.

In order to penetrate and filter the rainwater (2), the filter medium layer (21) is laminated with a filter material layer (21), which is known to be able to penetrate like ceramics such as zeolite, germanium ganban stone, clay and the like and have filtration performance. As the filter medium layer 21, ceramics and the like according to Korean Patent Registration No. 807175, "Bioceramic for Water Purification and Manufacturing Method thereof" (registered on Feb. 19, 2008) may be applied.

Preferably, under the filter medium layer 21, the filter medium layer 21 is prevented from falling down to the lower reservoir 30, and for example, the above-described ceramics having permeation and filtration performance of the rainwater 2 and The same filter mat 22 as the ceramic mat filled with the same filter medium 22a can be laid.

In this way, as the infiltration filtration unit 20 is laminated to the lower layer of the ground planting unit 10, the pollutants are purified to some extent by the plant 11 and the planting soil 12 while passing through the ground planting unit 10. Contaminants such as organic matter, heavy metals, oil and the like are removed from the rainwater 2 and the rainwater 2 introduced from the rainwater inlet 40 described later.

The lower reservoir 30, which is located below the infiltration filtration unit 20, is, for example, a coarse-shaped concrete structure (for example, a conduit) having an open top, and an infiltration filtration unit 20 thereon. And the ground planting part 10, while temporarily storing the rainwater 2 that has passed through the infiltration filtration part 20 to reduce the outflow, thereby distributing the intensive load of the pumping station and other facilities during heavy rains. It works to make it possible.

Since the lower reservoir 30 is a jaw structure of the upper opening, it must be able to support the penetration filtration unit 20 stacked thereon. For this purpose, an open upper surface of the lower reservoir 30 is formed in a grill shape. Alternatively, by forming a plurality of columnar structures in the inner space of the lower reservoir 30 to support the filter mat 22 thereon, the upper filter material layer 21 may not be sag. Preferably, the bottom of the lower reservoir 30 may be covered with a mat 32 such as the aforementioned permeable filterable ceramic mat having antimicrobial properties to prevent decay of the rainwater 2 temporarily stored.

A discharge port 31 is formed downstream of the lower reservoir 30, and the rainwater 2 stored in the lower reservoir 30 through the discharge hole 31 is discharged to the existing storm drain 4.

The rainwater inlet 40 is configured to guide the rainwater (2) to the above-ground planting portion 10 and to guide the rainwater (2) introduced into the infiltration filtration unit 20, etc., preferably inlet 41 and inflow It consists of the barrel 42.

The inlet 41 is installed over the boundary stone 13 partitioning the above-ground planting part 10, thereby leading the rainwater 2 of the ground surface 3 toward the above-ground planting part 10, and the inflow of the rainwater 2 is prevented. To be smoothly formed to fit the gradient of the ground surface (3), as illustrated in Figure 2, it can be formed in various shapes and arrangements, it is possible to install only one (A) and to install a plurality of (B) It is also possible.

Preferably, the inlet 41 is provided with, for example, a meshable opening and closing grill lid 41a to filter out a relatively large foreign material from entering the inlet 42, while cleaning or filtering the filtered foreign object 42. To be open for access.

The inlet 42 is installed directly under the inlet 41, and the rainwater 2 introduced through the inlet 41 is guided to the infiltration filtration unit 20 before being introduced into the ground planting unit 10. .

Preferably, the inflow trough 42 is filled with a filter medium 42a to remove contaminants contained in the initial rainwater 2. As the filter medium 42a, a material having a normal filtration function such as crushed stone or ceramic can be filled and applied. In addition, the filter medium (42a) of the inlet 42 is preferably manufactured in the form of a cartridge to be easily separated and replaced when the filtration function is significantly reduced.

Rainwater (2) that has passed through the rainwater inlet (40) passes through the infiltration filtration unit (20) to penetrate into some adjacent foundation soil (5) or discharge through the lower reservoir (30) to the existing stormwater drainage (4). do.

Rainwater (2) introduced through the inlet (41) of the rainwater inlet 40 is basically introduced into the infiltration filtration unit 20 through the inlet tube 42, the capacity of the inlet 42 is large inflow amount Rainfall exceeding 2 (2) is introduced into the reservoir space 15 of the above-ground planting part 10 and penetrated into some planting soil 12, rainwater (2) that did not penetrate the reservoir of the above-ground planting part 10 ( 15) is temporarily stored.

However, due to the heavy rain, the rainwater (2) will overflow when it reaches the full water level of the reservoir space (15), the rainwater overflow portion (50) before the rainwater (2) reaches the full water level of the reservoir space (15) Rainfall (2) acts to guide the lower reservoir (30).

To this end, the upper end of the rainwater overflow section 50 is piped to a position slightly lower than the upper end of the boundary stone 13 of the above-ground planting section 10, and preferably the upper end of the rainwater overflow section 50 allows the water to pass through the lid 51. ) To block foreign material from entering.

In this way, it is possible to cope with a change in rain, such as a heavy rain, according to the configuration of the rainwater overflow section 50.

In the rainwater treatment system according to the present invention, the size of the reservoir 15 and the planting soil 12, the infiltration filtration unit 20 and the lower reservoir 30 of the above-ground planting section 10 is rainfall basin area and rainfall Depending on the conditions of the initial rainfall pollution, etc. can be appropriately selected, for example, for the same area, each height is 35cm in the reservoir space 15, 30cm in the planting soil 12, 30cm in the infiltration filtration unit 20cm The lower reservoir 30 may be 65 cm or the like, and the lower reservoir 30 may be designed to be wider and higher beyond the area of the ground planting part 10 when the expected amount of storage is large.

The stormwater treatment apparatus 1 according to the present invention described above, as shown in FIG. 4, can be installed as a unit block and connected to the existing stormwater drainage 4 installed on the road 6 as necessary. The size and number of rainwater treatment devices 1 applied to each unit can be appropriately selected according to rainwater basin area and rainfall conditions, and thus, the stormwater treatment device of the present invention can be connected to the existing stormwater drainage system 4. Ability to manage nonpoint sources in the watershed as a whole.

Hereinafter, with reference to FIG. 1, the flow of rainwater in the stormwater processing apparatus 1 which concerns on this invention is demonstrated.

First, when the rainwater 2 flows to the ground surface 3 due to rainfall, the rainwater 2 flows in through the inlet 41 of the rainwater inlet 40 installed in the boundary stone 13 of the ground planting portion 10. It flows into the cylinder 42, and in this process, a comparatively large foreign material is filtered in the inflow port 41, and a contaminant is primarily filtered out by the filter medium 42a in the inflow cylinder 42.

The rainwater 2 of the inflow barrel 42 is permeated through the planting soil 12 or directly into the permeation filtration unit 20, and in this process, the filter medium layer 21 of the permeation filtration unit 20. ) And the filter mat 22 to remove the secondary contaminants. At this time, some rainwater 2 of the inflow pipe 42 penetrates into the surrounding soil 5 and flows into the groundwater.

Rainwater (2) passing through the infiltration filtration unit 20 is introduced into the lower reservoir 30 of the lower portion, wherein a part of the rainwater (2) through the passage (14), the underlying soil (5) Penetrates into the groundwater.

The rainwater 2 of the lower reservoir 30 flows through the discharge port 31 to the rainwater conduit 4 to complete the basic rainwater treatment of the rainwater treatment system 1 according to the present invention.

When the amount of rainwater (2) flowing through the rainwater inlet (40) exceeds the capacity of the rainwater inlet (40), the excess rainwater (2) is stored in the reservoir 15 of the above-ground planting section (10) Temporarily stored and stored water is penetrated through the planting soil 12 and discharged into the storm drain 4 through the infiltration filtration unit 20 and the lower storage unit 30, and the rainfall is large, so that the storage space 15 Rainwater 2 close to the full water level flows directly to the lower reservoir 30 through the rainwater overflow portion 50 and is discharged to the rainwater pipe 4. In addition, in this process, part of the rainwater 2 flows to the surrounding soil 5 through the open passage 14 between the boundary stone 13 and the lower reservoir 30 and is incorporated into the groundwater.
The rainwater treatment device 1 of the present invention may be difficult to construct the lower reservoir 30 due to its spatial limitations when it is applied to an existing city instead of a newly constructed new city. In the environment, the lower reservoir 30 may be omitted and rainwater that has passed through the infiltration filtration unit 20 may be directly discharged to the existing rainwater conduit 4.
At this time, the rainwater 2 passing through the permeation filtration unit 20 is not discharged into the existing rainwater conduit 4 after being stored in the lower reservoir 30, but is immediately discharged into the existing rainwater conduit 4. Of course, in this case, the rainwater overflow section 50 also guides the rainwater 2 to the lower reservoir 30 before reaching the full water level of the storage space 15, but to the existing rainwater conduit 4.

1 is a schematic diagram of an exemplary stormwater treatment device according to the present invention;

2 is a schematic plan view of an exemplary stormwater treatment device according to the present invention;

Figure 3 is a schematic diagram of an exemplary rainwater inlet applied to the stormwater treatment apparatus according to the present invention,

Figure 4 is a conceptual diagram of an example of applying the storm water treatment apparatus according to the present invention on the road.

<Description of the symbols for the main parts of the drawings>

1: stormwater treatment device of the present invention 2: stormwater

3: surface 4: existing storm drain

5: soil 6: road

10: Ground Planting Division 11: Plant

12: Planting soil 13: Boundary stone

14: passage 15: reservoir

20: penetration filter 21: filter medium layer

22: filter mat 22a: filter medium

30: lower reservoir 31: outlet

40: rainwater inlet 41: inlet

41a: grill lid 42: inlet

42a: filter medium 50: rainwater overflow part

Claims (5)

The storage space 15 is partitioned a little lower than the ground surface 3 to allow the inflow and temporary storage of the rainwater 2 flowing through the ground surface 3, and is installed in the vegetation space at the side of the road or in the central separator of the road. The ground planting part 10 in which the plant 11 is planted; An infiltration filtration unit 20 which is stacked below the planting soil 12 of the above-ground planting unit 10 and infiltrates the rainwater 2 to filter contaminants in the rainwater 2; The discharge port for stacking the rainwater (2) that is stacked under the infiltration filtration unit 20 and passed through the infiltration filtration unit 20 and discharges the stored rainwater (2) to the existing rainwater conduit (4) ( 31 is provided with a lower reservoir (30); Rainwater inflow to induce the rainwater (2) introduced from the ground surface (3) preferentially to the infiltration filtration unit 20, the inflow of the rainwater (2) having a capacity exceeded to the above-ground planting section (10) Part 40; And Rainfall overflow section 50 for inducing the rainfall (2) to the lower reservoir 30 before the rainwater (2) reaches the full water level of the reservoir space (15); It includes; The ground planting portion 10, the periphery is partitioned by the boundary stone 13 to form the reservoir space 15, the lower end of the boundary stone 13 is spaced apart from the upper portion of the lower reservoir 30 by a predetermined interval. Extends to the infiltration filtration unit 20 in a closed state, and allows a part of the rainwater 2 to penetrate into the surrounding soil 5 between the boundary stone 13 and the lower reservoir 30. A passage 14 is formed; The permeation filtration unit 20 includes an upper filter medium layer 21 capable of infiltration of the rainwater 2 and filtering contaminants from the rainwater 2, and the filter medium layer 21 and the lower reservoir. A filter mat (22) laminated between (30) to prevent the filter medium layer (21) from falling into the lower reservoir (30); The rainwater inlet 40 may include an inlet 41 capable of opening and closing wastewater from the ground surface 3 to the ground planting part 10, and the inlet 41. 41) The rainwater (2) introduced into the infiltration filtration unit 20, characterized in that it comprises an inlet (42) filled with a filter medium (42a), open rainwater treatment device. delete delete delete delete

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