KR20090049227A - Slope structure for purifying polluted water and method of purifying polluted water in the slope structure - Google Patents

Abstract

The present invention provides a purification function in addition to the function of the basic slope in the installation of the river banks or the slope of the road to clean the non-point source of pollution by road runoff during rainfall, such as in rivers and roads without using a separate site. It relates to a slope structure to be purified and a method for purifying contaminated water on the slope.

The present invention installs a multi-stage filtration system consisting of a soil filter layer composed of a soil filter layer having a good permeability of a certain standard and a water purification layer composed of aggregates, and contaminated the side opening of the upper slope of the slope of a riverside or road. Decentralized treatment facility for pollutant origin treatment by spraying water through multiple stages of soil filter media with good side opening and permeability, and through multi-stage filtration layer of water-transmitting layer composed of aggregates, and discharging the filtered water to rivers. As it has the advantage that it can be treated in the early stages of pollution, and it is possible to fully purify the polluted water from the pollutant origin where the polluted water is generated, so that the operation cost is also reduced and the treatment cost can be greatly reduced. In addition, it is economical because there is no need to equip the existing large site with a remote processing facility through a network.

Slopes, sideways, soil, aggregate, media, contaminated water, filtration, permeability, discharge

Description

Slope structure for purifying polluted water and method of purifying polluted water in the slope structure

The present invention relates to a slope structure having a function of purifying contaminated water generated at the origin of pollution in addition to the basic function of the slope in constructing a slope of a riverside or a road, and more specifically, flowing out of a pollution origin. On the slope structure and slope to clean up the polluted water to filter and drain the polluted water generated near the polluted point by installing the purification facility composed of multi-stage filtration layers inside the slope near the polluted point. It relates to a method of purifying contaminated water.

The slopes of riversides or roads are usually constructed of soil, and concrete blocks or gabions are installed on the surface to prevent the collapse of the slopes, and are simply functions to prevent slope collapse. In recent years, the construction of slopes on riversides or riversides into natural slopes, ecological blocks, etc. has been actively conducted.

The riverside slopes and road slopes that are currently being developed and commercialized are manufactured and installed in a natural environment-friendly material such as natural stones and ecological blocks, but this is somewhat effective in terms of environment-friendliness such as providing habitat for vegetation and aquatic organisms. It is true, but it does not have the function of treating the contaminated water generated near the slope.

On the other hand, in areas that regulate development projects such as sewage pollution total system, purification facilities for polluted river water and non-point sources should be installed. For this purpose, pipe networks to remote treatment plants to treat contaminated polluted water, Additional facilities such as inlet pumping station, sedimentation basin, aeration tank, aeration tank, septic tank, etc. in the water treatment plant require additional space, and a large site is required for installing such facilities. There is a problem.

In addition, this type of treatment is a long-distance treatment form that collects the contaminated water generated at the pollution source and transfers it to a remote water treatment plant through a collection pipe network for treatment, which requires a huge cost.

On the other hand, as a technique for treating contaminated water, a technique for purifying contaminated water using soil is known.

Filtration of contaminated water through the soil is basically filtered through the microorganisms in the soil, and 1 g of healthy soil contains 300 to 100 million microorganisms of soil microorganisms. A large number of bacteria are present in the soil and are known to provide nutrients for crops or to decompose and cleanse harmful pollutants.

As a related art, a technique of Korean Patent Publication No. 10-2005-0120838 is known, which is provided with a water-permeable layer made of a porous plate-like body on the bottom of a porous water-permeable framework and filled with sewage treatment soil thereon. It is a technology to filter the contaminated water through the soil block layer by simply filtering the contaminated water by installing the soil block under the topsoil layer.

The technology for filtration of contaminated water through the soil block is basically a filtration process using microorganisms in the soil, and is simply described as filtering the contaminated water through the soil block. It has not been shown to purify polluted water by providing polluted water purification function.

Therefore, an object of the present invention is to provide a purification function in addition to the original function of the slope on the banks of the riverside or the slope of the road, so that the non-point source of pollution caused by the road runoff during the rainfall, such as river water and roads flowing into the river near the pollution origin The present invention provides a slope structure for purifying contaminated water having a function of purifying contaminated water at a site of a contaminated source by installing a purification facility inside a slope of the filter and draining the filtered water to provide a method for purifying contaminated water on a slope.

Another object of the present invention is to clean the contaminated water by installing a purification facility on the shore of the river or near the slope of the stream near the origin of the polluted water generated from the road or river, and without using the site for a separate treatment facility The present invention provides a sloped structure for purifying contaminated water that can be treated with contaminant origin while reducing treatment costs, and a method for purifying contaminated water using the same.

The present invention is a multi-stage filtration layer by alternately installing a multi-layer soil filter layer consisting of a soil filter media of a certain standard and a water passage layer composed of aggregates at predetermined heights so as to connect the internal structure of a riverside or road slope with a side mouth. The streams, etc., are installed in the contaminated streams, if necessary, by installing an underwater beam, and collecting the contaminated water with a catchment well, and then using a submersible motor pump, etc. The river water filtered by the porous media filled to the inside bottom is reprocessed through the soil media installed in multiple layers along with the water passage layer and installed in a structure that can flow into the river. Road runoff, which is a non-point pollution source, is collected at the side of the road and collects runoff running through the side. The condensed water is filtered inside the slope to reduce the pollutants.

The device for supplying the contaminated water located on the upper slope is supplied by an underwater motor pump when the generation of the target water to be treated is lower than the slope, and when the generation of the target water to be treated is higher than the upper slope. Is supplied by a channel such as a U-shaped port with outlet holes drilled at regular intervals on the top of the slope due to natural loading.

Before the contaminated water flows into the same channel as the U-shaped port, the sedimentable substances such as earth and sand are removed by the pretreatment facility (centrifugal sedimentation device), and then flows into the same channel as the U-shaped port with the discharge hole of a certain size. Contaminants that could not be removed in the pretreatment facility due to media such as ocher and zeolite laid at a certain depth are configured to be removed again by filtration and adsorption.

The present invention as described above is provided with a purification facility composed of a multi-stage filter layer consisting of a soil filter layer and a water permeable layer having a good water permeability in the slope of the riverbank or near the pollution origin of the road and at the top of the slope In addition to the basic functions of the slope, the contaminated water from the source of pollution can be purified by treating the contaminated water generated from the source of contamination by connecting to the located side port.

In addition, the present invention by installing the purification facilities in the slope structure located near the pollution origin as a decentralized treatment facility, does not require an additional site for the installation of a separate treatment facility, and also economically by reducing the treatment cost of contaminated water In addition, there is an effect that can be purified, and since the soil and aggregate is used as a filter medium, the service life of the facility can be maintained permanently.

The present invention as described above is a purification facility installed in the slope of the riverside or the road, the slope structure is installed in the longitudinal direction near the upper inner side of the slope, the contaminated water flows into the upper side of the floor is laid at a certain height It is filtered through the porous media, and the wall and the bottom outlets for discharging the filtered water are formed at regular intervals and sprayed to the outside and horizontally in contact with the lower end of the side opening along the longitudinal direction under the side opening. The soil filter layer is a soil filter layer in which gravel is laid to a certain thickness, and a plurality of soil filter media of a certain standard that are permeable to the lower side of the filter layer are horizontally installed and connected in an integral structure by a connecting fixing member. The upper and lower jigs are stacked in multiple stages at predetermined heights alternately with the water-permeable layer by being connected in an integral structure with the connection fixing members. A multistage filtration layer embedded in the slope to form a channel of the shape, a collecting layer filled with aggregate at a predetermined thickness to collect the treated water filtered under the multistage filtration layer, and the bottom of the collection layer and the slope The discharge pipe is provided on the lower side of the slope so as to communicate with each other, it is characterized in that it is formed to drain the treated water collected in the collecting layer to the outside of the slope through the discharge port.

In addition, the present invention is installed in the bottom of the side opening is a porous media such as ocher or zeolite, characterized in that the general aggregate can be used in some cases.

In another aspect, the present invention is characterized in that the connection fixing member is formed of a semicircular water passage and a strip-shaped body provided with a slit groove to connect the standardized soil media layer.

In addition, the present invention is characterized in that the connection fixing member is installed as a clip-shaped body formed with a slit groove.

In addition, the present invention is characterized in that it is fixed to the inside of the slope with a fixed pile on the rim of the container-type container containing the soil filter installed on the edge of the soil filter layer.

In addition, the present invention is characterized in that it is installed with a trowel filled with soil blocking the water passage layer to the upper side of each soil filter layer located on the slope end of the multi-stage filtration layer.

The present invention will be described in detail with reference to the accompanying drawings.

Slope structure for purifying the contaminated water of the present invention, as shown in Figures 1, 10 and 11, by collecting the contaminated water generated in the road or river to guide the collection to the side port 10 located on the upper slope First, the porous media is filtered through the bottom and walls of the outlets with a certain thickness to sprinkle water into the multistage filtration layer, and the sprinkled water is installed with gravel so as to contact the lower part of the mouths throughout the longitudinal direction. 20 and a multi-stage filtration layer 40 consisting of a soil filter layer 30 which is installed in a zigzag pattern at a predetermined height alternately with the water passage layer is installed inside the slope, and through a zigzag-shaped channel C. Secondary filtration by natural discharge, and collected by a collecting layer 50 consisting of aggregate located on the lower side of the multi-stage filtration layer, and drained to the outside of the slope through the discharge pipe 60 connected to the outside between the collecting layer and the lower side of the slope. city The purification facility is formed of a buried structure to.

The structure of the principal part of the slope structure which purifies the contaminated water of this invention is demonstrated in detail.

As shown in Figures 2 and 3, the side port 10 is a passage of contaminated water to be collected, the outlet hole 13 of a predetermined size is formed in the bottom 11 and the wall 12, the bottom of the channel The porous media 14 made of crushed stone or gravel is installed at a predetermined height from the top, and the PVC filter lattice 15 is placed on the upper side of the porous media, and the water flows into the U-shaped port and flows in. And, the primary filtration treatment through the porous filter, and through the outflow hole is a structural part to spray into the multi-stage filtration layer 40 consisting of a water passage layer 20 and the soil filter layer (30).

The U-shaped port has a function of pumping contaminated water from a river to pump contaminated water provided from a centrifugal settle and a condensed water flowing from a roadside.

The porous media 14 installed at a predetermined height on the side bottom 11 has a function of removing contaminants by filtration and adsorption by porous media such as ocher and zeolite.

That is, in many cases, heavy metals in contaminated water are used for plastic processing with materials such as zeolite, which has a strong ability of adsorbing heavy metals.In case of contaminated water is an anionic material such as phosphorus, such as ocher containing a large amount of cationic materials such as aluminum and iron. Porous ceramic media are used as plastic materials for the soil.

On the other hand, the outlet water is drilled at regular intervals in the bottom and wall of the U-shaped side opening installed along the longitudinal direction from the upper inner side of the slope so that the treated water filtered through the porous media can be sprayed into a multistage filtration layer composed of a water passage layer and a soil media layer. do.

As shown in Figure 1, the water flow layer 20 is in contact with the bottom of the bottom of the side port 10, the aggregate 21 of crushed stone or gravel at a predetermined thickness is installed to form a water flow path (C) At the boundary surface of the outer slope covering part of the furnace, a sheet 22 having a function of preventing the inflow of soil is disposed to cover the outside of the water passage C so that the inside of the water passage C is not blocked.

Aggregate constituting the water-permeable layer 20 is composed of crushed stone or gravel, which is commonly used in general construction sites, and can be easily obtained. The particle size of the aggregate uses aggregates having a diameter of 13 mm to 25 mm or less. Considering the outflow rate, it can be found that it can be laid using artificial aggregate of ceramics with a specific function added to the water permeability and water purification screen, which is installed together with the soil media layer 30 to be described later.

As shown in Figures 4 to 9, the soil filter layer 30 is a structure in which the soil filter media (31) having good water permeability of a predetermined standard is installed horizontally below the water pass layer (20).

As shown in FIG. 4, the soil filter 31 installed in the soil filter layer 30 has an open side, and a water-containing container 32 having an opening at the bottom and a side thereof, such as a net. The loss prevention sheet 33 is installed on the inner surface of the containment container 32 to block soil loss while passing water to surround the containment container, and the mixed soil 34 firmly compacted in the loss prevention sheet is installed. As it is configured to be filled, the size has a size within the range of 100 mm (H) × 500 mm (L) × 500 mm (W) and a weight range of 25 kg or less to facilitate transportation and construction.

The mixed soil 34 is a composition in which masato, local soil, charcoal, and foliar soil, etc. are mixed, having good water permeability and using microorganisms that can be actively active, while maintaining the excellent purification ability of the soil as it is, made of aggregate. Although lower than the outflow rate of the water passage layer 20, by improving the permeability improves the amount of purification per unit area of soil.

Filling the mixed soil 34 in the soil filter media 31 of the standard used in the present invention when filling the soil in a mold having excellent water permeability of a certain standard and then compacted with a compactor, etc., so that there is no volume reduction after installation. After crushing to the strength, check the compaction strength and only meet the specifications of the mixed soil in Table 1 to be used as soil media of a certain standard. At this time, the soil medium is sufficiently compacted when filled in the container-type container so as not to be settled by its own load and water flowing inside.

Table 1

Specifications of Mixed Soil

designation unit Specification and specification Remarks Masato Mm D ₁₀ = 0.1 ~ 0.3 Volume ratio 50-70% Local soil Without difficulty in use Volume ratio 10-30% Charcoal Mm Grain size range 10 or less Volume ratio 10-30% Water content % 10.0 ~ 20.0 Commitment Kgf / ㎠ 10.0 ~ 20.0 Durometer readings Appearance g / cm 3 1.0-2.0

When the soil media is compacted, the voids between the granules are reduced, resulting in good bonding, resulting in increased bearing capacity, reduced compressibility, reduced permeability, frostbite prevention, and expansion and contraction miniaturization. It is to prevent the destruction of the facility by preventing, as well as to prevent impervious soil due to excessive compaction.

The compaction of the soil is different depending on the soil properties and water content. Among them, the dry unit weight increases as the water content of the dry soil increases, and the dry unit weight gradually decreases as the amount of soil particles decreases and the amount of water increases. . This point is called the optimum water content and the maximum compacting effect is obtained. In general, the optimum water content is in the range of 10-15% in sandy soils and 20-40% in cohesive soils.

On the other hand, the standardized soil filter media are installed in a unitary structure by the connecting fixing members 35a, 35b, and 35c so that there is no displacement in the soil filter media layers, and the soil filter media standardized by the fixed pile 38 are installed. It is fixedly fixed and supported in the slopes, thereby providing structural stability of the slopes.

As described above, when installing the standardized soil media layer, by installing a ring-shaped fixed pile to prevent the flow of the connection fixing member connected between the soil media and the standardized soil media inside the structure to prevent the flow inside the structure Secure the safety of the structure.

The soil filter layer 30 connects the unit soil filter 31 with the neighboring unit soil filter 31 in installing the standardized soil filter 31 on the lower slope of the side hole in a predetermined width along the length direction of the side hole. By connecting with the fixing members (35a, 35b, 35c) is installed horizontally in an integral structure, the flow of water is installed so as not to be biased to one side.

The connection fixing member 35a is formed in a strip-shaped body provided with a semicircular waterway port 36 and a slit groove 37 to connect the soil media 31, the semicircular waterway port 36 is soil The movement of the contaminated water introduced into the media is to facilitate the movement in the mixed soil, and the slit groove 37 surrounds the edge of the container type container 32 of the neighboring unit soil media 31 therein. As a structure, it connects to an integral structure.

In addition, it is noted that the connection fixing members 35b and 35c may be installed as a clip-shaped body in which a slit groove is formed.

The soil filter 31 installed at the edge of the soil filter layer 30 is fixed to the outer side of the container-type container 32 by the fixed pile 38 so that the soil filter material 31 is settled inside the slope. It is fixed to prevent the loss of and to prevent lifting or twisting.

As shown in Figure 1, the multi-stage filtration layer 40 is a water flow path (C) so that the water flow layer 20 and the soil filter layer 30 is passed through the natural flow at the front and rear ends alternately in a zigzag form every predetermined height. It is a structural part laminated in multiple steps while forming a.

As described above, the soil filter media layer 30 installed as a soil filter media having a predetermined standard is applied to the excellent self-cleaning ability of the soil filter media and has a low permeability coefficient to compensate for the shortcomings of the soil with low throughput per unit area. By installing in a multi-stacked shape, it is possible to increase the throughput per unit area by increasing the contact area with the soil while contacting the soil media layer formed in a multi-layer on the same site as the number of treated objects sprinkled from the top flows naturally in the direction of gravity. That is, the structure extends the filtration length of contaminated water.

In addition, in the lateral direction of the soil filter material 31, a gap is connected to the upper and lower sides in a predetermined width, and a water-permeable layer 20 filled with water-permeable aggregate in the gap is zigzag at the front and rear portions of the soil filter material layer 30. By being connected up and down not to be broken, the water passage C is elongated to extend the filtration length of the water to be treated.

As shown in Fig. 1, the collecting layer 50 is laid on the front of the bottom of the multi-stage filtration layer with a height of 30 cm or more by using aggregate having a diameter of 40 mm or more, and is horizontal to maintain the number of treated objects introduced from the top. Make sure the catch is smooth.

As shown in FIG. 1, the discharge pipe 60 is installed at a lower side of the slope between the outside of the slope and the bottom of the water collecting layer 50, so that the purified water collected in the water collecting layer is collected into the stream. As a structure that is drained into a pipe to be drained, a filter net (not shown) is installed at the inlet of the discharge pipe 60 to discharge the filtered water in the catchment layer to a stream outside the slope through the discharge port 61.

On the other hand, as shown in Figure 9, the soil sack (B) filled with the soil in the non-woven fabric, if necessary, cover the outside of the slope side of the multi-stage filtration layer 40 by the inflow water flowing from the channel (C) In order to prevent the loss of the internal soil of the slope and scour phenomenon, by installing a soil-filled trowel (B) it is revealed that the interior of the slope is damaged and installed to prevent the collapse of the slope in advance.

The upper part of the purification facility that has been installed is covered with soil, and when the soil is covered, the upper soil flows into the water layer, preventing the loss of water and the structural stability of the slope. ) To prevent the inflow of the upper soil and to prevent the treated water to be purified from being discharged to the slope in untreated state.

After installing the purification facility of the present invention as described above inside the slope to plant the plant outside the slope to improve the stability and prevention of slope and landscape function due to the rooting of the plant roots.

A method for purifying contaminated water through a slope structure according to the present invention will be described.

Collecting the contaminated water generated in the river or the road into the side mouth installed inside the upper end of the slope;

Firstly filtering the inflow water collected into the side opening through the filter lattice and the water-permeable porous media installed at the top of the side opening, and then watering the multi-layer through the outlets formed in the bottom and walls of the side opening;

A secondary filtration process while the primary filtration water is naturally dropped through a multi-stage filtration layer in which gravel-coated water flow layers and soil filter layers are alternately stacked in a plurality of steps at predetermined heights to form a water flow path having a vertical zigzag shape;

Collecting the treated water filtered through the multi-stage filtration layer into a collecting layer on which aggregate is installed;

And draining the treated water collected in the collecting layer to the outside through a discharge pipe installed to communicate with the outside between the collecting layer and the lower side of the slope.

In addition, before the step of inducing the contaminated water to the side outlet, the pre-treatment step of collecting and collecting the river water by the centrifugal settling in the upper portion of the slope connected to the side by pulling up the river contaminated water with the underwater motor pump to settle do.

It looks at the embodiment applied in the field of the pollution origin according to the method of purifying contaminated water through the slope structure as described above.

FIG. 10 is a first embodiment in which non-point contaminants introduced from a road surface during a rainfall are collected to sideways to purify contaminated water introduced through a slope structure of the present invention.

That is, road runoff such as a nonpoint pollutant source generated on the road during rainfall is collected toward the side of the road, and the contaminated water introduced through the channel of the U-shaped port 10 having the outlet holes is sprinkled by the multi-stage filtration layer 40 and filtered. The contaminants are filtered through the water flow layer 20 and the soil filter layer 30, which are the main structural parts of the purification facilities installed on the slopes, with the outflowing non-point pollutant discharged through the discharge pipe 60 to collect the purified water collected in the water collection layer 50. By discharge into the river through the embodiment to reduce the generation of contaminants.

11 is a second embodiment for purifying contaminated river water through the slope structure of the present invention.

In this embodiment, the submerged stream is installed in the contaminated stream to store the contaminated river water, and then the contaminated water is collected by a collecting well and sent to a centrifugal settler installed on the upper slope using a collecting device and an underwater motor pump. By sprinkling the treated water to the side opening 10, the contaminant is filtered while passing through the water passage layer 20 and the multi-filtration layer 40 of the soil filter layer 30, which are the main structural parts of the purification facility buried in the slope, and the catchment layer. (50) is an embodiment to discharge the purified water collected in the river through the discharge pipe (60).

Although not shown in this embodiment, the spherical structure of the spherical structure consisting of a screen device and a raw water supply pump that can remove coarse contaminants in the contaminated water inlet when the contaminated water is collected, it is connected to the side opening at the top of the slope A device for sending contaminated water into a centrifugal sedimentation cell, and a device for increasing sedimentation efficiency by centrifugal force, such as a centrifugal sedimentation device, and a device for removing sedimentable contaminants contained in contaminated water, such as a sedimentation facility, as a pretreatment facility for contaminated water. Is provided.

Embodiments of the above is applied to the slopes of the river banks or roadsides, it is noted that it can also be applied to the slope structure of the cilantro site of the river banks.

The above embodiments are decentralized treatment facilities that do not need to be sent to a remote collection station because they are made on the slope near the origin of contamination, and there is an advantage that the treatment can be performed at the time of contamination, and at the origin of contamination It is possible to purify and clean even small facilities, thus reducing the operating cost and reducing the processing cost. In addition, it is economical because there is no need to equip the existing large site with a remote processing facility through a network. .

According to the method for purifying contaminated water through the slope structure of the present invention, a multi-stage filtration layer having 10 layers of soil filter layer and water passage layer is installed in a concrete structure (size: W 900 × L 1,400 × H 1,800㎜). The raw water of the sewage treatment plant discharged to the river through this multi-stage filtration layer was reprocessed 10 times.The raw water discharged by treating the contaminated water in the sewage treatment plant and this raw water were sprinkled from the upper part of the multi-filtration layer and filtered. The water pollution test before and after filtration was performed on the treated water, and the results are shown in Table 2.

TABLE 2

collection Throughput (㎥ / ㎡ · day) Water temperature (℃) BOD (mg / l) COD _Mn (mg / L) Suspension (SS) (mg / L) NH ₃ -N (mg / L) enemy Treated water enemy Treated water enemy Treated water enemy Treated water 1 time 8 23.2 15.6 2.3 14.1 7.7 13.0 1.0 18.0 2.9 Episode 2 8 23.1 10.9 1.2 10.8 6.1 4.5 1.0 2.1 0.5 3rd time 8 22.9 16.5 1.2 10.2 5.6 6.0 1.4 9.8 0.3 4 times 8 22.9 15.2 1.3 8.6 4.8 2.4 0.2 7.3 0.0 5 times 8 22.9 11.8 1.8 8.7 7.1 8.5 1.3 12.9 0.5 6th 8 25.3 16.9 1.5 10.9 5.6 6.0 0.3 16.4 1.0 7th 8 23.1 12.0 1.9 11.6 7.0 6.8 0.3 17.9 0.4 8th 8 22.7 11.6 1.8 10.9 6.6 6.9 0.3 19.1 1.9 9th 8 17.3 19.1 2.0 16.0 7.2 9.0 0.4 14.8 1.1 10th 8 15.9 - 2.1 15.9 7.4 13.6 2.2 17.3 3.3 Average 8 13.0 1.7 11.8 6.5 7.7 0.8 13.6 1.2

As shown in Table 2 above, the water pollution of raw water and treated water was compared, respectively, and on average, BOD was reduced from 13.0 ppm to 1.7 ppm, and COD _Mn was 11.8 ppm to 6.5 ppm, and suspended solids (SS) Silver 7.7ppm to 0.8ppm, NH ₃ -N can be seen to be reduced from 13.6ppm to 1.2ppm, respectively, it was confirmed that the effect of greatly reducing the water pollution in the filtration of contaminated water according to the present invention.

1 is a cross-sectional view of a slope according to the present invention;

2 is a perspective view of a side opening installed in accordance with the present invention;

3 is a cross-sectional view of FIG.

Figure 4 is an exploded perspective view of the standardized soil media of the present invention,

Figure 5 is a partially cutaway perspective view of the connection installation state of the standardized soil media according to the present invention,

6 is a cross-sectional view taken along the line A-A of FIG.

7a and 7b is a view showing another embodiment of the standardized soil media connecting device according to the present invention,

8 is a view for fixing the standardized soil filter media according to the present invention with a fixed pile,

Figure 9 is a perspective view of installing a trowel on the end of the soil media layer according to the present invention

10 is an exemplary view showing a process of purifying stream contaminated water according to the present invention;

11 is an exemplary diagram showing a purification process of a nonpoint source generated on a road surface according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: side 11: bottom

12: wall 13: outlet

14: porous media 15: lattice lattice

20: water passage 21: aggregate

22: soil loss prevention and order sheet 30: soil filter layer

31: standardized soil media 32: containment vessel

33: nonwoven sheet 34: mixed soil

35a, 35b: Connection fixing member 38: Fixed pile

40: multistage filtration layer 50: treated water collection layer

60: discharge pipe 61: discharge port

C: Aqueduct B: Hemp

G: grid

Claims (8)

In a slope structure provided with a side opening in the longitudinal direction near the inner side of the upper end of the slope, Contaminated water flows into the upper side of the bottom and is filtered through the porous media installed at a certain height, and outlets for discharging the filtered water are formed at a predetermined interval on the wall and the bottom to spray water to the outside; In the lower side of the side hole in contact with the bottom of the side along the longitudinal direction of the gravel horizontally installed in a certain thickness, and a plurality of soil filter media of a certain standard that is permeable to the lower side of the water passage is installed horizontally A multi-layer filter layer embedded in the slope so as to form a naturally flowing channel in the form of up and down zigzag while being stacked in multiple stages at a predetermined height alternately with the water passage layer, the soil filter layer connected in one structure by a connecting fixing member; A collecting layer in which aggregate is filled to a predetermined thickness so as to collect the treated water filtered under the multi-filtration layer; The discharge pipe is provided on the lower side of the slope so as to communicate between the catchment layer and the lower side of the slope, contaminated water characterized in that it is formed to drain the treated water collected in the catchment layer to the outside of the slope through the outlet. Slope structure, purifying. The slope structure of claim 1, wherein the porous media disposed at the bottom of the side opening is ocher or zeolite. The slope structure according to claim 1, wherein the connection fixing member is formed of a semicircular water passage and a strip-shaped body provided with a slit groove to connect the soil media standardized therein. The slope structure of claim 1, wherein the connection fixing member is installed as a clip-shaped body in which a slit groove is formed. The slope structure according to claim 1, wherein the contaminated water is purged and fixed to the inside of the slope with a fixed pile on the edge of the container-type container installed at the edge of the standardized soil filter. The slope structure according to claim 1, wherein soil trowels filled with soil blocking the water passage layer are installed above each soil filter layer positioned at the slope end of the multi-stage filtration layer. Collecting the contaminated water generated in the river or the road into the side mouth installed inside the upper end of the slope; Firstly filtering the inflow water collected into the side opening through the filtering lattice and the water-permeable porous media installed on the bottom of the side opening, and then watering the multi-layer through the outlets formed in the bottom and walls of the side opening; A secondary filtration process while the primary filtration water is naturally dropped through a multi-stage filtration layer in which gravel-coated water flow layers and soil filter layers are alternately stacked in a plurality of steps at predetermined heights to form a water flow path having a vertical zigzag shape; Collecting the treated water filtered through the multi-stage filtration layer into a collecting layer on which aggregate is installed; And draining the treated water collected in the catchment layer to the outside via a discharge pipe installed in communication with the outside between the catchment layer and the lower side of the slope. The pretreatment step of claim 7, further comprising a pretreatment step of collecting and collecting the river water by the centrifugal sedimentation unit in the upper portion of the slope connected to the outlet before the step of inducing the contaminated water to the side port to raise and settle the river contaminated water with the submerged motor pump. Purifying contaminated water on the slope, characterized in that.

Images