KR20130091900A - Equipment and method for decrease non-point pollution sources using infiltration trench - Google Patents

Abstract

PURPOSE: A nonpoint pollutant reducing facility with a penetration ditch and a nonpoint pollutant reducing method thereof are provided to improve the filtration efficiency of first rainwater and to reduce maintenance costs by extending a replacement cycle of various consumable parts, since unnecessary filtration is not implemented. CONSTITUTION: A nonpoint pollutant reducing facility (10) with a penetration ditch comprises a flow rate distribution structure (100), a pre-treatment tank (200), and a penetration ditch (300). The flow rate distribution structure takes in the first outflow of rainfall effluent, which flows in an existing channel (20), as separate distribution water. The pre-treatment tank settles down pollutants which are contained in the first outflow. The penetration ditch is filled with aggregate inside, and makes the initial outflow to be contained in the aggregate and to pass through the aggregate.

Description

Nonpoint Pollution Reduction Facilities with Infiltration Ditch and Reduction Methods for Nonpoint Pollution Using the Reduction Facilities {Equipment and method for decrease non­point pollution sources using infiltration trench}

The present invention relates to a non-point pollution reduction facility having a penetration groove and a non-point pollution reduction method using the reduction facility. More specifically, the facility and method for reducing the non-point pollution by inflowing only the initial effluent water to be eliminated non-point pollution in the pre-treatment tank, and slowly entering the initial effluent water stored in the pre-treatment tank into the permeate ditch to infiltrate the lower soil layer. It is about.

Water pollution sources are divided into point pollution sources and non-point pollution sources. Point pollution sources are mainly used for monitoring the occurrence area and generation amount such as domestic sewage generated in general households or business areas, industrial wastewater discharged from factories, animal wastewater generated in large- This is a relatively easy subject and is the main object of sewage disposal.

On the other hand, non-point pollution source refers to drainage from agricultural drainage, mine waste water, livestock wastewater from small-scale livestock facilities, living sewage or forest in rural areas without sewerage, and these pollutants are relatively dependent on natural treatment due to less contribution of pollution.

Emphasis is placed on non-point sources, non-specific pollutants, surface pollutants, mobile pollutants, and other pollutants. Unlike point pollutants having specific discharge routes, non-point pollutants are unspecified, such as urban road drains or agricultural drainage. Refers to a location or area that generates nonpoint pollutants through an exhaust path.

Aquaculture aquaculture facilities, golf course facilities, transportation equipment, maintenance or junkyard facilities, concentrated aquatic products simple processing facilities, photograph processing facilities, etc., which have been renamed from `` specific facilities '' to `` other water pollution sources '' under the Water Quality Preservation Act; This includes other facilities such as product yards, product yards, and land quality change areas.

Nonpoint pollutants are pollutants that are discharged along with surface rainfall runoff when it rains. Fertilizers, pesticides, soil erosions, barn spills, traffic pollutants, urban dust and garbage, natural animals and plants Residues, air pollutants that fall on the ground.

Therefore, rainwater (rainwater runoff) containing all pollutants is actually the main nonpoint source. Non-point pollutants are usually discharged only when there is a lot of rain, so they have a large difference in daily and seasonal emissions, difficult to predict and quantify, and are affected by weather conditions, geology, and terrain, which are difficult to control artificially.

The point pollution sources such as domestic sewage are steadily decreasing due to the establishment of basic environmental facilities, but the nonpoint pollution sources are continuously increasing due to the improvement of land use. In particular, the impact of non-viscous salts on water quality is predicted to reach 65 ~ 70% by water sector in 2015, and active management of non-point pollution sources is required.

In 2007, the government revised and amended the 'Law on Water Quality and Aquatic Ecosystem Correction' to select and expand objects to be installed in nonpoint pollution abatement facilities.

As a result of the 'Non-point Pollution Research Service' (June 2000) on the upstream area of Paldang Dam, the main source of water for residents of the Seoul metropolitan area, as of the end of 1999, Pollutant loads generated from point sources such as industrial wastes and livestock wastes were 13,6509 tons per year, which is 80.4%, and 331 393t / year, which was 19.6%.

In addition, the non-point source pollution source was estimated to be 44.5% of the total discharge load (BOD standard), and nonpoint source pollution was found to have a significant influence on water pollution. The Geum River, Nakdong River and Youngsan River . Therefore, as the regulations for point sources with regulatory standards are continuously strengthened and environmental facilities are expanded, the impact of non - point pollution sources on water quality will gradually increase.

On the other hand, in such a problem, conventionally, as a measure to reduce pollution, road drainage in urban areas is to install a storage tank to settle and discharge pollutants caused by the initial rain, and discharged from farmland. • Agricultural drainage containing a large amount of pesticides has been installed in reservoirs, wetland purification facilities and water plants to prevent direct entry into rivers.

However, such a countermeasure would be to treat only the initial rainfall, which is the actual nonpoint source pollutant discharged with all the pollutants, by continuously treating the rainwater after a certain period of time when the concentration of the pollutant decreases, There is a problem that the maintenance cost rises.

Therefore, a non-point pollution reduction facility requiring only an initial effluent containing almost all nonpoint pollutants and having an appropriate efficiency and economy is required.

The present invention was derived in order to solve the above problems, focusing on the fact that most of the non-point pollutants included in the initial rainwater, and the non-point pollutants contained in the rainwater is reduced over time, separating the initial rainwater In order to reduce the water pollution by providing a non-point pollution reducing facility having a penetration groove according to the present invention to purify.

In addition, another object of the present invention is to provide a non-point pollution reduction facility having a permeation groove according to the present invention to purify and discharge the pollutant of rainwater flowing into the river or the sea as much as possible.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

An object of the present invention, in the structure having a non-point pollution reduction facility, the flow distribution structure for introducing the initial outflow of the rainfall outflow water introduced into the existing water channel into a separate distribution channel; A pretreatment tank in which the initial effluent led to the flow distribution structure flows into the bottom and the pollutants contained in the initial effluent are settled down; It can be achieved as a non-point pollution reduction facility having a permeation groove, including; and the initial outflow stored in the pretreatment tank, the aggregate is filled therein, the infiltration ditch to freshwater and infiltrate the initial outflow water into the aggregate.

The flow distribution structure may include an inlet jaw having a specific height in the existing water channel to guide the initial outflow water, which is the object of removing pollutants from the rainfall runoff, to the distribution channel.

It may be characterized in that it further comprises a vegetation zone that is connected to the rear of the infiltration ditch and vegetation water is planted and introduced into the upper portion of the infiltration ditch so that the initial outflow water overflows without infiltrating the infiltration ditch and discharges the initial outflow water into the existing waterway.

A penetration trench having a depth of 1 to 2.5 m, a bottom portion filled with a sand layer, a top portion filled with a gravel layer and a middle portion filled with a gravel layer, And a charging hole provided at a lower end of the partition to penetrate the initial effluent stored in the pretreatment tank into the infiltration trench.

The pretreatment tank may further include a sand pack installed on the inlet side of the pretreatment tank so that the contaminants precipitated in the bottom of the pretreatment tank do not flow into the infiltration trough.

The volume of the pretreatment tank may be characterized in that 20 to 30% of the total water treatment capacity for the removal of pollutants.

The sand grains forming the sand layer have a diameter of 0.1 to 10 mm, the gravel grains forming a gravel layer have a diameter of 45 to 60 mm, the diameter of the small grains forming the residue layer is 20 to 30 mm, between the sand layer and the gravel layer and between the gravel layer and the residue It may be characterized in that it further comprises a filter fiber provided between each layer.

As another category, an object of the present invention is to reduce the non-point pollution using a non-point pollution reduction facility having the above-mentioned penetration groove, wherein the initial outflow of rainfall effluent is introduced into the distribution water by being guided by the guide jaw of the flow distribution structure. step; Inflowing the initial outflow water into the pretreatment tank installed at the end as a distribution water of the flow distribution structure; Contaminants contained in the initial effluent stored in the pretreatment tank are settled downward; Initial outflow water stored in the pretreatment tank is introduced into the permeate ditch through an input hole formed in the lower portion of the partition wall provided between the pretreatment tank and the permeation ditch; And the initial outflow water overflowed from the inside of the pretreatment tank is introduced into the upper side of the permeate ditch, and the fresh water and permeate into the bottom of the permeate ditch are achieved as a nonpoint pollution reduction method using a nonpoint pollution reduction facility having a permeate ditch. Can be.

It further includes a vegetation zone installed between the rear of the permeate ditch and the existing waterway and planted with vegetation water, and the initial outflow water that flows into the upper portion of the permeate ditch without being infiltrated into the permeate ditch is introduced into the vegetation path and flows into the existing waterway. It may be characterized in that it further comprises.

Freshwater and infiltration into the permeate ditch and the freshwater and permeation into the lower portion of the permeate ditch may be characterized in that it lasts for 40 to 72 hours.

The step of introducing fresh water and infiltrating into the permeate ditch may be characterized in that contaminants settled below the pretreatment tank are not introduced into the permeate ditch by the sand pack installed at the input hole side of the pretreatment tank.

Therefore, according to the embodiment of the present invention as described above, since only the initial outflow water is separated and purified by the flow distribution structure, the size of the final purification facility provided before sending rainwater to rivers, seas, etc. can be reduced or eliminated. have.

In addition, the non-point pollution reduction facility having a permeation ditch according to the present invention has fresh water and permeates into the lower soil layer only by the permeate ditch, so that other excellent water flows as it is. Replacement cycles can be extended, leading to better initial cleanup and lower maintenance costs.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a perspective view of a non-point pollution reduction facility having a penetration cut off a cross section according to an embodiment of the present invention;
2 is a plan view of a non-point pollution reduction facility having a penetration trench according to an embodiment of the present invention;
Figure 3 is a side cross-sectional view of a non-point pollution reduction facility having a penetration groove according to an embodiment of the present invention,
Figure 4a is a perspective view of the flow distribution structure and the pretreatment tank viewed from the side according to an embodiment of the present invention,
4b is a perspective view of a flow distribution structure and a pretreatment tank viewed from the front according to an embodiment of the present invention;
Figure 5a is a cross-sectional view of a non-point pollution reduction facility having a penetration groove in the view point in accordance with an embodiment of the present invention,
Figure 5b is a cross-sectional view of a non-point pollution reduction facility having a penetration in the end portion according to an embodiment of the present invention,
6 is a cross-sectional view of the penetration groove according to an embodiment of the present invention,
Figure 7 is a side cross-sectional view of the connection portion of the pretreatment tank and the penetration groove according to an embodiment of the present invention,
8 is a flowchart illustrating a non-point pollution reduction method using a non-point pollution reduction facility having a penetration trench according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Hereinafter will be described the configuration and function of the non-point pollution reduction facility 10 having a penetration groove 300 according to an embodiment of the present invention. First, Figure 1 shows a perspective view of a non-point pollution reduction facility 10 having a penetration groove 300 cut in cross section according to an embodiment of the present invention. And, Figure 2 shows a plan view of a non-point pollution reduction facility 10 having a penetration groove 300 according to an embodiment of the present invention. In addition, Figure 3 shows a cross-sectional side view of a non-point pollution reduction facility 10 having a penetration groove 300 according to an embodiment of the present invention.

1, 2 and 3, the non-point pollution reduction facility 10 having the penetration groove 300 according to an embodiment of the present invention is a flow distribution structure 100, pre-treatment tank 200, It can be seen that the penetration trench 300 and vegetation zone 400 and the like.

The flow distribution structure 100 is installed to guide the initial outflow water to the distribution channel 120 in the rainfall outflow water containing non-point pollutants introduced into the existing waterway 20. As shown in FIG. 1 and FIG. 2, the flow distribution structure 100 includes a guide jaw 110 and a distribution channel 120 installed in the existing channel 20, and an existing channel 20 and the distribution channel 120. It can be seen that the initial flow through the outlet 130 provided between).

Figure 4a is a perspective view of the flow distribution structure 100 and the pretreatment tank 200 viewed from the side according to an embodiment of the present invention, Figure 4b is a flow distribution structure viewed from the front according to an embodiment of the present invention The perspective view of the 100 and the pretreatment tank 200 is shown. Another guide jaw 110 in one embodiment of the present invention has a height of about 10cm, the initial runoff outlet 130 is composed of a height of about 15cm. Therefore, the initial outflow water from the rainfall outflow is introduced into the distribution channel 120 through the initial outflow outlet 130 by the guide jaw 110. In addition, when the flow rate of rainfall outflow increases and overflows the guided jaw 110, the excess flow rate is not introduced into the distribution channel 120 by the guided jaw 110, but is bypassed through the existing channel 20. pass). Therefore, only the initial outflow water, which is the total water treatment capacity (WQv) according to an embodiment of the present invention, is introduced into the distribution channel 120 through the initial outflow outlet 130 by the guide jaw 110.

 The pretreatment tank 200 according to the embodiment of the present invention is installed at the rear end of the distribution channel 120 as shown in FIGS. 1, 2, and 3. Therefore, the initial outflow water introduced into the distribution channel 120 is introduced into the pretreatment tank 200 to be stored. The volume of the pretreatment tank 200 corresponds to about 20 to 30% (preferably 25%) of the total water treatment capacity (WQv) for contaminant removal.

The initial outflow water introduced into the pretreatment tank 200 is stored in the pretreatment tank 200, so that a part of the contaminants is settled downward. Therefore, suspended solids such as earth and sand particles and garbage included in the initial effluent are primarily removed to increase the efficiency of nonpoint pollution reduction.

Figure 5a shows a cross-sectional view of a non-point pollution reduction facility 10 having a penetration groove 300 in the view point in accordance with an embodiment of the present invention. And, Figure 5b shows a cross-sectional view of the non-point pollution reduction facility 10 having the penetration groove 300 in the end portion according to an embodiment of the present invention. And, Figure 6 shows a cross-sectional view of the penetration groove 300 according to an embodiment of the present invention.

As shown in FIGS. 5A and 5B, it can be seen that the infiltration ditch 300 has a specific ditch length L and depth d. In a specific embodiment, the depth of the penetration trench 300 is about 1 to 2.5m, and the initial outflow water introduced from the pretreatment tank 200 is slowly filled over 48 hours (up to 3 days) as a kind of reservoir filled with aggregate therein. Infiltrate into the totuto layer.

5A and 5B, a partition wall 230 is provided between the infiltration ditch 300 and the pretreatment tank 200. Two infiltration holes 210 are formed in the lower portion of the partition wall 230, Is formed. Therefore, the initial outflow water stored in the pretreatment tank 200 is gradually introduced into the penetration trench 300 by the injection hole 210 so that the fresh water and the penetration into the lower portion of the penetration trench 300.

As shown in FIG. 6, the infiltration ditch 300 includes an upper end constituted by the granular layer 330 and a lower end constituted by the sand portion 310 and the intermediate portion constituted by the gravel layer 320. The filter fibers 340 are provided between the gravel layer 330 and the gravel layer 320 and between the gravel layer 320 and the sand layer 310 and on the side surfaces of the gravel layer 320 and the side surface of the gravel layer 330 do. The construction of the penetration groove 300, first excavate the position to install the penetration groove, laid a sand layer 310, laid a filter fiber 340, laid a gravel layer 320 on top of the gravel layer 320 After laying the filter fiber in the) is installed by installing the residue layer 333 to the top.

In the concrete example, the diameter of the gravel blocks forming the gravel layer 330 is about 2.5 cm on average, the diameter of the gravel constituting the gravel layer 320 is about 4.0 cm on average, The average diameter is about 0.5 cm. The volume of the infiltration ditch 300 is a value obtained by dividing the porosity of the aggregate filled in the infiltration ditch 300 by the total water quality treatment capacity WQv.

In addition, it can be seen that the initial outflow water overflowed in the pre-treatment tank is introduced to the upper side of the penetration groove 300, as shown in Figure 1 and 5a. According to the flow rate and the flow rate of the initial outflow water flowing into the upper side, some of the fresh water and infiltration to the lower side of the permeate groove 300, the fresh water and the initial outflow water did not penetrate into the permeate groove 300 is shown in Figs. As described above, the vegetation zone 400 is discharged to the existing water channel 20.

Vegetation zone 400 is connected to the rear of the infiltration ditch (300) and the vegetation water is planted inflow into the upper portion of the penetration ditch (300) to introduce the initial outflow water overflows without penetrating the infiltration ditch (300) to the initial outflow water to the existing water Discharge to (20). In addition, a part of the water is infiltrated into the bottom soil layer of the vegetation zone 400 or flows into the existing water channel 20 after filtration by vegetation.

In addition, Figure 7 shows a side cross-sectional view of the connection portion of the pretreatment tank 200 and the penetration groove 300 according to an embodiment of the present invention. As shown in FIG. 7, it can be seen that the sand pack 220 is installed at the upper inlet hole 210 so that the contaminants settled under the pretreatment tank 200 do not flow into the penetration trench 300. That is, in the pre-treatment tank 200, as mentioned above, suspended solids such as earth and sand particles, garbage, etc. of the initial effluent are settled, but such suspended solids are not introduced into the penetration trench 300, but by such suspended solids. In order to prevent the phenomenon in which the injection hole 210 is blocked, the sand pack 220 is installed on the injection hole 210 side. Therefore, the sand pack 220 is generated simultaneously with the filtration action of the initial outflow water and the clogging prevention effect of the injection hole (210).

Hereinafter, an embodiment of a non-point pollution reduction method using the non-point pollution reduction facility 10 having the aforementioned penetration trench 300 will be described. 8 is a flowchart illustrating a non-point pollution reduction method using the non-point pollution reduction facility 10 having the penetration trench 300 according to an embodiment of the present invention.

First, the initial outflow of the rainfall runoff flowing into the existing waterway 20 is guided by the guide jaw 110 installed in the existing waterway 20 is introduced into the distribution channel 120 of the flow distribution structure 100. (S10). As mentioned above, the rainfall runoff that is not guided by the guide jaw 110 according to the increase in the flow rate and the flow rate of the rainfall runoff is bypassed without being introduced into the distribution channel 120.

Then, the initial outflow water introduced into the distribution channel 120 is introduced into the pretreatment tank 200 installed at the end of the distribution channel 120 of the flow distribution structure 100 to be stored (S20). Then, suspended solids, such as earth and sand particles contained in the initial effluent stored in the pretreatment tank 200, are settled downward (S30).

Next, the initial outflow water stored in the pretreatment tank 200 is introduced into the penetration trench 300 through an input hole 210 formed in the lower portion of the partition wall 230 provided between the pretreatment tank 200 and the penetration trench 300. , The initial outflow water introduced into the permeate ditch 300 is gradually freshwater and infiltrate into the lower soil layer over about 40 to 72 hours by the aggregate filled in the permeate ditch 300 (S40). At this time, the floating material settled to the lower part of the pretreatment tank 200 by the sand pack 220 installed in the injection hole 210 side of the pretreatment tank 200 is not introduced into the penetration groove 300.

Next, the initial outflow water overflowed in the pre-treatment tank 200 is introduced into the upper side of the permeation groove 300 to be fresh water and permeate the lower portion of the permeation trench 300 (S50). In addition, the vegetation zone 400 is installed between the rear of the penetration trench 300 and the existing water channel 20, and the vegetation zone 400 is planted, but is introduced into the upper portion of the penetration trench 300, but does not penetrate the penetration trench 300. The initial outflow water overflowed into the vegetation zone 400 is introduced into the existing waterway 20 (S60).

10: Non-point pollution reduction facility with penetrating trench
20: existing waterway
100: Flow distribution structure
110: Judo jaw
120: Minutes of water
130: Initial runoff outlet
200: Pretreatment tank
210: input ball
220: Sand Pack
230:
300: penetration ditch
310:
320: Gravel layer
330:
340: Filter fiber
400: The vegetation zone

Claims (11)

In a structure equipped with a non-point pollution reduction facility,
A flow distribution structure for introducing the initial outflow of rainfall runoff into the existing channel into a separate distribution channel;
A pretreatment tank in which the initial effluent led to the flow distribution structure flows into the bottom to set down pollutants contained in the initial effluent; And
Non-fouling pollution reduction facility having a permeation groove; including the initial outflow water stored in the pre-treatment tank, the aggregate is filled therein to the freshwater and infiltrate the initial outflow water into the aggregate.
The method of claim 1,
The flow distribution structure,
Inducing jaw having a specific height in the existing channel, and the initial runoff outlet on the existing waterway wall to guide the initial outflow water to be removed to remove the pollutants from the rainfall runoff to the distribution channel Non-point pollution reduction facility with penetration trench.
The method of claim 1,
And a vegetation zone connected to the rear of the permeate ditch and planted with vegetation water to flow into the upper portion of the permeate ditch so that the initial outflow water overflows without infiltration into the permeate ditch and discharges the initial outflow water into the existing water channel. Non-point pollution reduction facility which has penetration groove to make.
The method of claim 1,
Further comprising a partition provided between the infiltration ditch and the pretreatment tank,
The infiltration trench has a depth of 1 to 2.5 m and is provided with a lower end filled with a sand layer and a top portion filled with a middle portion filled with a gravel layer and a gravel layer,
The non-point pollution reduction facility having a penetration groove, characterized in that it further comprises an injection hole is provided on one side of the bottom of the partition to penetrate the initial outflow water stored in the pretreatment tank into the penetration groove.
5. The method of claim 4,
The pretreatment tank,
Non-point pollution reduction facility having a penetration ditch further comprises a sand pack installed on the injection hole side so that the contaminants settled below the pretreatment tank do not flow into the penetration ditch.
6. The method of claim 5,
The volume of the pretreatment tank is a non-point pollution reduction facility having a permeation groove, characterized in that 20 to 30% of the total water treatment capacity that is the target of the removal of contaminants.
5. The method of claim 4,
The diameter of the sand particles forming the sand layer is 0.1 to 10mm, the diameter of the gravel particles to form the gravel layer is 40 to 60mm, the diameter of the residue to form the residue brown layer is 20 to 30mm,
Non-point pollution reduction facility having a penetration groove further comprises a filter fiber between the sand layer and the gravel layer and between the gravel layer and the residue layer.
In the non-point pollution reduction method using a non-point pollution reduction facility having a penetration groove of claim 1,
An initial effluent of the rainfall effluent is led by the guide jaw of the flow distribution structure and flows into the distribution channel;
Storing the introduced initial outflow water into a pretreatment tank installed at an end with a distribution water of the flow distribution structure;
Settling down the contaminants contained in the initial effluent stored in the pretreatment tank to the bottom;
The initial outflow water stored in the pretreatment tank is introduced into the permeate ditch through an input hole formed in a lower portion of the partition wall provided between the pretreatment tank and the permeation ditches, to allow fresh water and permeation; And
The initial outflow water overflowed in the pre-treatment tank is introduced into the upper side of the permeate ditch, fresh water and permeate into the bottom of the permeate ditch; non-point pollution reduction using a non-point pollution reduction facility having a permeate ditch Way.
The method of claim 8,
Further comprising a vegetation zone is installed between the rear of the penetration ditch and the existing waterway, the vegetation zone planted vegetation water,
Boiling point using a non-point pollution reduction facility having a penetration groove further comprises the step of flowing into the vegetation to the initial outflow water flowing into the upper portion of the penetration groove and not to penetrate the penetration groove. Pollution Reduction Method.
The method of claim 8,
Freshwater and infiltration into the permeate ditch and the inflow into the upper portion of the permeate ditch and the freshwater and permeation into the bottom of the permeate ditch are characterized in that non-point contamination with permeate ditch is maintained for 40 to 72 hours. Non-point pollution reduction method using facility.
The method of claim 8,
Fresh water and the step of infiltrating the permeate ditch,
Non-point pollution reduction method using a non-point pollution reduction facility having a penetration groove characterized in that the contaminants settled below the pretreatment tank by the sand pack installed on the input hole side of the pretreatment tank do not flow into the penetration trench.

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