KR102530965B1 - Side Gutter Type Rain Collecting Well AND Eco-friendly Road Structure With Drainage System Using The Rain Collecting Wells - Google Patents

Abstract

Disclosed in the present invention are an eco-friendly waterway-type collector well and an eco-friendly road structure with a drainage system using the same, which comprise a filter module to purify rainwater collected in a collector well before discharging the same to a drain pipe. To this end, the waterway-type collector well according to the present invention comprises: a water collector container body which is provided in a hexahedral container shape such that a water collecting space may be formed therein, wherein a rainwater pipe connecting hole is formed at one surface, and protruding pieces are formed at the central portion in the longitudinal direction to face each other, while a stepped protrusion is formed in the water collecting space in left-and-right directions around the protruding piece; a first filter module and a second filter module which are hung at the stepped protrusion at the left and right sides, and are individually mounted in the water collector container body; a first and a second covers which are mounted on the first filter module and the second filter module, and of which the upper surface is located to be horizontal to the edge portion of the water collector container body, wherein infiltration water introduction holes are formed; an introduction hole cover which is provided on the first and second covers, wherein a cut-open unit is formed at the center to correspond to the surface water introduction hole, and a protruding unit is provided by being extended in a downward direction from the horizontal plate provided in the left-and-right directions of the cut-open unit; an entrance barrier formed at the edge portion of the surface water introduction hole; and a grating which is inserted into the entrance barrier. Here, the first and second covers are spaced apart from each other. The interval between the first cover and the second cover is formed as the surface water introduction hole corresponding to the cut-open unit. Therefore, environmental pollution may be minimized.

Description

Eco-friendly road structure having an eco-friendly waterway type collecting well and a drainage system using the same {Side Gutter Type Rain Collecting Well AND Eco-friendly Road Structure With Drainage System Using The Rain Collecting Wells}

The present invention relates to an eco-friendly waterway type collecting well equipped with a filter module to purify rainwater collected in a collecting well and discharging it to a sewer pipe, and to an eco-friendly road structure having a drainage system using the same.

At the side edge of the road or the boundary between the sidewalk and the driveway, water pipes are continuously buried along the length of the road to form a drainage channel, that is, a gutter for discharging rainwater that falls on the road surface.

A separate collection well is arranged at appropriate intervals (eg, about 20 to 25 meters on a typical road) along the gutter line formed by continuously connecting these water pipes, and the collection well is connected to the sewage pipe. Therefore, rainwater that falls on the road surface flows into the gutter water pipe at the edge of the road, flows through the gutter water pipe, collects in the collecting well, and then flows into the sewage pipe. In addition, the gutter water pipe is buried along the lengthwise direction on the bottom of the edge of the road to construct the gutter, and then a steel grating or concrete lid is installed at the upper opening of the gutter water pipe to finish.

Conventionally, in the gutter water pipe, after installing a boundary stone on the foundation concrete cast on the floor, pouring the lower concrete on the side of the boundary stone, installing the gutter water pipe on it, and placing reinforced concrete above the lower concrete to fix the gutter water pipe, Subsequently, after constructing the foundation of the road, a road pavement layer made of blocks, asphalt concrete, or concrete was constructed on the upper surface.

However, the road structure having such a gutter type has several problems.

For example, road aesthetics are not good because the road surface is not uniformly finished, drainage is not smooth, water pools under the pavement layer, precise gutter construction is required, and curved part construction is difficult and time-consuming. It takes time, and there were problems with difficult maintenance after finishing or difficult repair after construction.

In order to solve these problems, the present applicant has proposed a prior patent (Korean Patent Registration No. 10-1509202) registered on March 31, 2015.

The prior patent provides a collecting well structure that is short in length and can even play the role of a gutter water pipe even when installed alone, instead of the gutter water pipe that is continuously connected and arranged along the longitudinal direction of the road. Even if such a structure is adopted and installed, the prior patent can complete the drainage system of the road structure, fundamentally does not cause a leakage problem in the connection part, and can quickly discharge the infiltrate that has penetrated under the pavement layer, so that water is accumulated. However, it could provide an effect capable of preventing the deterioration of the road surface and minimizing the damage to the aesthetics of the road.

However, the prior patent has a structure in which rainwater falling on the road surface is discharged as it is to the sewer pipe without any purification function. Therefore, conventionally, in order to utilize such rainwater as various types of water, a separate purification system must be built, resulting in other problems requiring cost and time for system construction.

Korean Registered Patent No. 10-1509202 (2015. 03. 31.)

The present invention has been made to solve the above problems, and provides a collecting well structure that cleanly purifies rainwater flowing from a road surface so that good quality rainwater can flow into a collecting well and be discharged to a sewer pipe.

The present invention provides a collecting well structure capable of reducing purification construction costs and minimizing environmental pollution by utilizing waste resources in purifying rainwater.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the eco-friendly water collecting well according to an embodiment of the present invention is formed in the shape of a hexahedron container, has a water collection space formed therein, has a rainwater pipe connection hole formed on one side thereof, and is formed in the center in the longitudinal direction. a water collecting cylinder in which protruding pieces are formed to face each other and a step is formed inside the collecting space in the left and right directions based on the protruding pieces; a first filter module and a second filter module that span the left and right steps and are mounted inside the water collecting cylinder, respectively; a first cover and a second cover mounted on the first filter module and the second filter module, the upper surface of which is positioned to be level with the rim of the water collecting cylinder, and formed with permeate inlet holes; an inlet cover provided on the first cover and the second cover, having a cutout portion corresponding to the surface water inlet hole in the center, and having a protrusion extending downward from a horizontal plate in the left and right directions of the cutout portion; an inlet barrier formed on an edge portion of the surface water inlet hole; It includes a grating inserted into the inlet barrier, the first cover and the second cover are spaced apart from each other, and the distance between the first cover and the second cover is formed as a surface water inlet hole corresponding to the cutout. to be characterized

According to the present invention, the first filter module and the second filter module use a waste filter carbon block for a water purifier as a filter medium, filter rainwater introduced into the surface water inlet hole and the permeate water inlet hole, and filter the rainwater flowing into the water collecting space below. emit with

According to the present invention, each of the first filter module and the second filter module includes a concave module body; a filter flange formed on an upper edge of the module body; It is formed in the module body and includes a plurality of mounting holes in which filter housings are mounted, and the first filter module and the second filter module are installed in the collecting space while the filter flange extends over the step.

According to the present invention, the filter housing includes a circular columnar filter body whose diameter decreases from top to bottom; a flange for a housing formed on an upper end of the filter body; A plurality of discharge ports are formed on the bottom surface of the filter body, and the filter housing is mounted on the mounting hole portion by extending the housing flange over the upper surface of the module body.

According to the present invention, the filter housing is a mixed sample prepared by pulverizing a carbon block of a waste filter for a water purifier, homogenizing activated carbon particles of the pulverized carbon block, and then mixing activated carbon particles having different sizes in a predetermined ratio. It is provided in a state made by filling the inside of the filter body.

According to the present invention, the filter housing is made of Polylactic Acid.

According to the present invention, a total of 18 filter housings are mounted on each of the first filter module and the second filter module, nine each, and the filter housings are spaced at regular intervals in a 3*3 matrix, respectively, of the first filter module and the second filter module. are spaced apart.

In the road structure according to another embodiment of the present invention, the water collection wells are independently arranged and buried at the edge of the road while maintaining a certain distance along the length of the road, and the sand layer and water collection well laid on the concrete support layer of the road It is characterized in that it is configured to purify rainwater flowing in from the road surface by a double filtration system by a filter module provided in the space and discharge it to a sewage pipe.

According to the present invention, since the filter module for rainwater purification is provided in the collecting well, the rainwater introduced through the surface water inlet and the infiltration water inlet formed in the collecting well can be purified and discharged, thereby providing high quality It has the effect of securing underground water.

In addition, according to the present invention, since a double filtration system is built together with the sand layer laid on the existing road structure, it is possible to more effectively remove pollutants from rainwater.

According to the present invention, since the filter medium of the filter housing provided in the filter module uses a water purifier-type waste filter carbon block, there is an effect of reducing costs and minimizing environmental pollution due to the use of waste resources.

According to the present invention, the filter module itself or a specific filter housing can be easily removed and replaced by removing the cover of the collecting well, so that rainwater purifying function can always be optimally maintained.

According to the present invention, rainwater purified in the water collection space can be widely used as toilet cleaning water, landscaping water, sprinkling water, cleaning water, laundry water, agricultural water, industrial water, river maintenance water, etc., so that water resources can be easily secured. possible effects can be expected.

1 is a perspective view of a water collecting well according to an embodiment of the present invention.
Figure 2 is a plan view of Figure 1;
FIG. 3 is a cross-sectional view taken along line AA' of FIG. 2 .
Figure 4 is an exploded perspective view of Figure 1;
5 is an internal perspective view of the water collecting cylinder.
6 is a view showing a filter module according to the present invention, wherein FIG. 6a is a plan view, FIG. 6b is a front view, and FIG. 6c is a side view.
7 is a perspective view of a filter housing according to the present invention.
8 is a process flow chart showing a manufacturing process of a filter housing.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, it should be understood that this is not intended to limit the specific embodiments of the present invention, and includes all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Spatially relative terms, such as below, beneath, lower, above, upper, etc., facilitate the correlation between one element or component and another element or component, as shown in the drawing. can be used to describe Spatially relative terms should be understood as encompassing different orientations of elements in use or operation in addition to the orientations shown in the figures. For example, when an element shown in the drawing is turned over, an element described as below or beneath another element may be placed above or above the other element. Accordingly, the exemplary term below may include both directions of down and above. Elements may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims fall within the scope of the spirit of the present invention. .

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

1 is a perspective view of a conduit-type collecting well according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1 .

As shown in FIGS. 1 and 2, the conduit-type collecting well 2 is formed in the form of a substantially rectangular parallelepiped cylinder in which the top, bottom, left, right, front, and rear are all blocked, and is installed alone to form a water pipe and It is a structure that doubles as a collection well. Specifically, the conduit-type collecting well 2 includes a collecting cylinder 10 having a bottom and side circumferences closed and an open top, and providing a collecting space 10a in which rainwater gathers therein, and a cover covering the upper part of the collecting cylinder 10. (20: 20a, 20b).

A rainwater pipe connection hole 12 for connecting a rainwater rainwater connection pipe (not shown) of a sewage facility is formed on a side wall of the water collection cylinder 10 . The rainwater pipe connecting hole 12 is a hole for connecting the discharge pipe to the sewage facility. For example, a stormwater connector is connected to the stormwater pipe connection hole 12, and the stormwater connector is connected to a stormwater main passing through the road underground. Then, the rainwater collected in the conduit type collecting well 2 flows out to the rainwater main through the rainwater connection pipe connected to the stormwater pipe connection hole 12 .

In the cover 20 of the water collecting cylinder 10, a surface water inlet hole 22 through which rainwater flows from the surface of the road pavement layer and a seepage water inlet hole through which rainwater penetrating under the road pavement layer flows in ( 24) is formed.

An inlet barrier 30 protruding above a certain height from the upper surface of the cover 20 is installed around the surface water inlet hole 22 . The upper inlet of the inlet barrier 30 is located at a higher position than the inlet of the permeate inlet hole 24. Therefore, the surface water inlet hole 22 is exposed above the pavement layer to allow rainwater (surface water) to flow in from the surface of the pavement layer, and the infiltration water inlet hole 24 is buried under the road pavement layer to allow rainwater (surface water) to flow in from the surface of the pavement layer. Rainwater (seepage water) that has infiltrated into it can flow in. In this way, the conduit-type collecting well 2 is buried under the road pavement layer except for the entrance barrier 30, so that the infiltrated water permeated under the road pavement layer can be collected through the infiltrate inlet hole 24, In addition, surface water flowing on the surface of the road pavement layer can be collected through the surface water inlet hole 22, so even if installed alone, it can fully play the role of a conventional gutter water pipe.

FIG. 3 is a cross-sectional view taken along line AA' of FIG. 2 .

The present invention is characterized in that a structure for purifying (filtering) rainwater flowing in from a road is further configured. As shown in FIG. 3, the water collecting cylinder 10 includes first and second filter modules 100a and 100b in the water collecting space 10a. The first and second filter modules 100a and 100b are for purifying rainwater (rainwater), and in this embodiment, the first and second filter modules 100a and 100b use a waste filter carbon block as a filter medium. Two filter housings 200 may be used. The configuration of the filter module 100 and the filter housing 200 will be reviewed below.

Referring to FIG. 3 , the first and second filter modules 100a and 100b are provided on the lower side of the first and second covers 20, and flow into the surface water inlet hole 23 and the permeate water inlet hole 24. It serves to purify all the rainwater and flow it into the collection space 10a. The first and second filter modules 100a and 100b are configured to be exchanged after the upper cover 20 is removed. The first and second filter modules 100a and 100b themselves can be exchanged or only the filter housing 200 mounted on the first and second filter modules 100a and 100b can be exchanged, and accordingly, depending on the lifespan of the filter function It will be able to provide sufficient purification function.

4 is an exploded perspective view of FIG. 1, and FIG. 5 is an internal perspective view of the water collecting cylinder.

As shown in FIGS. 4 and 5 , a rainwater pipe connection hole 12 is formed and a water collecting cylinder 10 having a water collecting space 10a formed therein is provided. In the water collecting cylinder 10, a protruding piece 14 is formed at the center in the longitudinal direction, and a step 16 is formed inside the collecting space in the left and right directions based on the protruding piece 14. The filter modules 100a and 100b are mounted across the step 16 .

The filter modules 100a and 100b include a first filter module 100a and a second filter module 100b respectively mounted on left and right sides of the protruding piece 14 . The first filter module 100a and the second filter module 100b are mounted symmetrically with respect to the protruding piece 14, but the first filter module 100a and the second filter module 100a depend on the position where the protruding piece 14 is formed. The sizes of the filter modules 100b may be designed differently from each other.

A first cover 20a and a second cover 20b are positioned above the first filter module 100a and the second filter module 100b. The aforementioned penetration water inlet holes 24 are formed in the first cover 20a and the second cover 20b. Inlet hole covers 51 and 52 may be provided to the permeate inlet hole 24 . The inlet covers 51 and 52 may use drain board-type covers 51 and 52 formed to cover the inlets so that rainwater can flow in while preventing sand from penetrating. If the non-woven fabric is first covered and then the sand is laid, it serves to prevent the non-woven fabric from being pressed into the penetration water inlet hole 24 by supporting the lower surface of the non-woven fabric.

The inlet cover, that is, the drain board type cover 51, 52 is a plastic molded product, and has a structure in which a horizontal plate 51 and a protrusion 52 are formed below the horizontal plate, and water is passed between these protrusions 52. By providing a flowing passage, the permeating water can easily flow into the permeating water inlet hole 24.

An inlet barrier 30 is installed around the surface water inlet hole 22, and a grating 40 is inserted into the inlet barrier 30. The grating 40 may be made of a metal plate in a lattice shape like a grating of a general gutter water pipe, or one made of cement concrete having a plurality of holes. The grating 40 prevents a passerby or a wheel of a vehicle from falling off, while preventing large garbage from entering.

6 is a view showing a filter module according to the present invention, wherein FIG. 6a is a plan view, FIG. 6b is a front view, and FIG. 6c is a side view.

As shown in FIG. 6 , the filter module 100 may include a module body 101 and a mounting hole 104 in which the filter housing 200 is seated and mounted on the module body 101 .

The module body 101 has a filter flange 102 formed on an upper edge, and the filter flange 102 is hung and mounted on the upper surface of the step 16 formed in the water collecting space 10a. In addition, the diameter of the mounting hole 104 is smaller than that of the upper end of the filter housing 200, so that the filter housing 200 can be easily mounted by simply being inserted into the mounting hole 104.

According to the present embodiment, the first filter module 100a and the second filter module 100b may be designed so that 18 filter housings 200 made of PLA are mounted in consideration of the effective height in the collecting well. That is, nine filter housings 200 are mounted on each of the first filter module 100a and the second filter module 100b. Of course, this is only one embodiment, and the size of the water collecting space 10a in the water collecting cylinder 10, the filter modules 100a and 100b and the filter housing 200, the purification performance of the filter housing 200, etc. It is natural that the number of filter housings 200 may be differently applied in consideration, and various designs may be possible depending on the place where the collecting well is installed.

7 is a perspective view of a filter housing according to the present invention.

The filter housing 200 includes, for example, a filter body 210 made of a recyclable plastic material and a housing flange 220 formed on an upper edge of the filter body 210 . A waste carbon block filter is provided in the space within the filter body 210, and a predetermined number (eg, five) of outlets 230 are formed at the lower end of the filter body 210.

In addition, the filter housing 200 may be configured such that its diameter decreases from the top to the bottom as a whole. This is to easily mount the filter housing 200 to the mounting hole 104 .

The specifications of the filter housing 200 according to this embodiment are shown in Table 1 below.

characteristic detail texture Polylactic (PLA) Inner diameter (I.D.) 54mm Outer Diameter (O.D.) 56mm Length (L) 200mm Volume (V) 0.412L

According to this embodiment, the specifications of the filter housing 200 are manufactured as shown in Table 1, but in the present invention, all sizes of the filter housings 200 provided to the first filter module 100a and the second filter module 100b are You don't have to do the same. The size of the filter housing 100 may be manufactured and provided differently, and in this case, the size of the mounting hole 104 needs to be formed to correspond to the size of the filter housing 200 .

8 is a process flow chart showing a manufacturing process of a filter housing.

As shown in FIG. 8A, the filter housing 200 of this embodiment is manufactured using a carbon block of a waste filter for a water purifier.

In order to manufacture the filter housing 200, first, the carbon block of the waste filter is pulverized to a certain size, and the activated carbon particles of the carbon block are homogenized using a pulverizer. For the homogenization process, for example, Endcotts' 'Minor 200' pulverizer can be used.

Then, a mixed sample is prepared by mixing activated carbon particles of different sizes, for example, 1 to 2 mm in size and 2 to 5 mm in a certain ratio (FIG. 8c).

Then, the prepared mixed sample is put into the filter body 210 shown in FIG. 8B to complete the filter housing (FIG. 8D).

At this time, during the manufacturing process of the filter housing 200, for error and standardization of the filter housing 200, the carbon block in the pulverized and pulverized waste filter is washed with distilled water more than a predetermined number of times, and It is preferable to further perform a process of drying for more than an hour, sterilizing for 20 minutes in an environment of 121 ° C. and 15 psi, and performing a compaction operation using a stick so that the activated carbon particles in the filter body 210 do not have a layer.

In the analysis of the reduction of contaminants of the filter housing 200 according to the present invention, the total number of coliforms, combined residual chlorine, turbidity, BOD, T-N, T-P, pH, reduction rate of chloride and pH change rate were confirmed through experiments. Of course, there was a difference in performance depending on the mixed sample in the filter housing 200, but it was found that there was a rainwater purification effect.

And through the experiment, the appropriate filter medium capacity in the individual filter housing 200 is about 160g in the case of 'C_He' activated carbon sample, and therefore, considering that the net capacity of the carbon block in the waste filter is around 90g, two waste filters It can be seen that one filter housing can be manufactured by using.

In addition, the mixed sample used in the filter housing 200 according to the present invention was selected through analysis of the free residual chlorine recovery rate, drainage capacity by mixing ratio, water quality factor reduction efficiency, etc. Specifically, the free residual chlorine recovery rate evaluation for recyclability evaluation Recovery rate of up to 99.9% in filter housing, removal rate of 52.1 ~ 78.0% for each pollutant except for chloride through analysis of water quality index reduction of filter housing, rainwater permeation through dispersed purification collection well and filtration through filter module Samples representing water quality were used.

As described above, the collecting well of the present invention is provided with a filter module in the collecting space, and is a double filtration system along with a sand layer laid on the concrete support layer of the road, non-contact water and some gray water within the recommended water quality standards for rainwater utilization facilities. Water quality standards can be met. In addition, it is possible to remove pH and turbidity, which are non-contact water analysis items for the human body, for toilet cleaning water, landscaping water, and watering

It can be seen that it can be used as water, cleaning water, laundry water, agricultural water, industrial water, and river maintenance water.

Although the above has been described with reference to the illustrated embodiments of the present invention, these are only examples, and those skilled in the art to which the present invention belongs can variously It will be apparent that other embodiments that are variations, modifications and equivalents are possible. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

2: catchment well 10: catchment body
14: protruding piece 16: step
12: Storm pipe connector
20a, 20b: first cover, second cover
100a 100b: first filter module, second filter module
101: module body
102: Flange for filter
104: mounting hole
200: filter housing
210: filter body
220: Flange for housing
230: outlet

Claims (8)

It is made in the shape of a hexahedral container, and a collection space is formed inside, a rainwater pipe connection hole is formed on one side, and a protruding piece is formed facing the center in the longitudinal direction, and a step is formed inside the collecting space in the left and right directions based on the protruding piece. formed catchment body;
a first filter module and a second filter module that span the left and right steps and are mounted inside the water collecting cylinder, respectively;
a first cover and a second cover mounted on the first filter module and the second filter module, the upper surface of which is positioned to be level with the rim of the water collecting cylinder, and formed with permeate inlet holes;
an inlet cover provided on the first cover and the second cover, having a cutout portion corresponding to the surface water inlet hole in the center, and having a protrusion extending downward from a horizontal plate in the left and right directions of the cutout portion;
an inlet barrier formed on an edge portion of the surface water inlet hole; and
Including a grating inserted into the entrance barrier,
The first cover and the second cover are spaced apart from each other, and the distance between the first cover and the second cover is formed as a surface water inlet hole corresponding to the cutout,
Each of the first filter module and the second filter module,
A concave module body;
a filter flange formed on an upper edge of the module body; and
It is formed in the module body and includes a plurality of mounting holes in which filter housings are mounted,
The eco-friendly waterway type collecting well, characterized in that the first filter module and the second filter module are installed in the collecting space with the filter flange extending across the step. According to claim 1,
The first filter module and the second filter module,
Waste filter carbon blocks for water purifiers are used as filter media,
An eco-friendly conduit-type collecting well for filtering rainwater introduced into the surface water inlet hole and the infiltration water inlet hole and discharging it to the collecting space below. delete According to claim 1,
The filter housing,
A filter body in the form of a columnar shape whose diameter decreases from top to bottom;
a flange for a housing formed on an upper end of the filter body; and
Including a plurality of outlets formed on the bottom surface of the filter body,
An eco-friendly conduit-type collecting well, wherein the housing flange spans the upper surface of the module body so that the filter housing is mounted to the mounting hole. According to claim 4,
The filter housing,
The carbon block of the waste filter for water purifier is pulverized, the activated carbon particles of the pulverized carbon block are homogenized, and the mixed sample prepared by mixing activated carbon particles of different sizes in a certain ratio is filled into the filter body and provided in a state made. Eco-friendly water collecting well. According to claim 1,
The filter housing is made of polylactic acid, an eco-friendly waterway type collecting well. According to claim 1,
A total of 18 filter housings, 9 each of which are mounted on the first filter module and the second filter module,
The filter housing is disposed at regular intervals in a 3*3 matrix, respectively, the first filter module and the second filter module. An eco-friendly waterway-type collecting well having a configuration of any one of claims 1, 2, and 4 to 7 is independently arranged and buried at the edge of the road while maintaining a certain distance along the length of the road, A road structure characterized in that it is configured to purify rainwater flowing from the road surface and discharge it to a sewer pipe by a double filtration system by a sand layer laid on the concrete support layer of the road and a filter module provided in the water collection space.

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