KR20190055638A - Natural draining system in land fill site and method of maintenance control thereof - Google Patents

Abstract

Disclosed are a natural drainage system of underground water in a landfill and a maintenance method thereof. The natural drainage system includes a water collecting unit collecting underground water and a collector well filtering and discharging the underground water. The collector well includes a housing and a purification unit, wherein the purification unit can include a detachable reactive medium unit and a shielding wall. The housing can include an inlet unit and an outlet unit of the underground water. Moreover, highly efficient underground water can be filtered and naturally drained according to a configuration of the inlet unit, the outlet unit, and the shielding wall.

Description

TECHNICAL FIELD [0001] The present invention relates to a natural drainage system for a groundwater,

The present invention relates to a natural drainage system and method for managing landfill groundwater, and more particularly, to a natural drainage system and method for maintaining groundwater at a proper level.

In the landfill, it is necessary to collect the retained water effectively and to install the drainage system of the dugout structure with the durable durability that can discharge quickly, and even if the house and drainage facilities are installed to discharge the water in the landfill, And the number of reservoirs, etc., may be changed depending on the waste landfilled. Therefore, a purification facility is required to properly treat the effluent water.

Especially, in the case of marine repositories, the number of reserves in the repository can be leaked out to the outside according to the level in the sea repository.

The sea surface repository is a ship-type shielding facility consisting of a revetment structure composed of a revetment structure and a vertical column that blocks the movement of water at the top of the low permeable submarine ground, and an incinerator, incombustible solid waste, Facilities.

Since the sea and the water column are installed in the sea with the water in the sea, the existing sea water exists in the interior after the construction of the shielding facility, the internal water level can be increased by the landfill of the waste, When the internal water level is higher than the water level of the external seawater, the direction of water flow in the reef and lower ground is formed from the inside to the outside of the sea repository. Accordingly, there is a possibility that the water retained in the sea repository will be discharged to the sea through the seabed under the shielding facility.

The water level of the sea repository should be kept slightly lower than the water level of the seawater so that the water flow direction in the seabed ground is formed from the outside to the inside of the sea repository so that the water inside the sea repository can be prevented from flowing out.

On the other hand, the landfill site of the final disposal site takes a long time to be abolished, and the house, drainage and purification facilities such as the final disposal site landfill site and internal reserves can be maintained from the beginning of landfills such as waste disposal until the final disposal site is abolished. Therefore, it is necessary to continuously maintain and manage related facilities, and technical review to improve economic efficiency and efficiency in maintenance and management of house and drainage systems is needed.

Korean Patent No. 10-1611447

SUMMARY OF THE INVENTION It is an object of the present invention, which has been made in view of the above circumstances, to provide a drainage system capable of maintaining the reservoir water and the like in a landfill at an appropriate water level and purifying the reservoir water in a landfill, And to provide a natural drainage system and a management method of the groundwater.

In addition, it is an object of the present invention to provide a natural drainage system and a management method of a landfill groundwater which is easy and economical to install and manage a house and a drainage facility in a landfill.

In order to accomplish the above object, a natural drainage system for groundwater in a landfill according to an embodiment of the present invention includes: a collector for collecting and filtering groundwater present in the landfill; And includes a collecting section.

According to an embodiment of the present invention, the dust collecting unit includes a housing having a space therein and a purifying unit positioned inside the housing and filtering contaminants in the landfill semi-ground water.

According to an embodiment of the present invention, the housing is provided with an inlet for introducing the landfill semi-ground water and a drain for discharging the landfill semi-ground water, and the inlet can be located higher than the outlet.

According to an embodiment of the present invention, the purifying unit may include a first shielding wall, a second shielding wall facing the first shielding wall, and a reactive medium for filtering the landfill semi-groundwater, And can be detachably coupled between the first shielding wall and the second shielding wall.

According to an embodiment of the present invention, the first shielding wall is provided with an inlet through which the landfill semi-groundwater flows into the lower end, and the height of the upper end of the second shielding wall may be lower than the height of the inlet.

According to one embodiment of the present invention, the purging portion may further include a screen connected to the lower end surface of the reactive medium portion.

According to an embodiment of the present invention, a blocking member may be connected to the housing of the dust collecting unit or the purifying unit to block inflow of the landfill semi-ground water.

According to an embodiment of the present invention, the purifying unit may further include a sensing sensor for sensing the filtering ability of the reactive medium portion.

According to an embodiment of the present invention, the plurality of reactive medium portions may be arranged in parallel, and the detection sensor may be provided to correspond to each of the plurality of reactive medium portions.

According to an embodiment of the present invention, a plurality of blocking members corresponding to the plurality of reactive medium portions may be provided.

According to an aspect of the present invention, there is provided a method for managing a drainage system for collecting and filtering groundwater existing in a landfill zone, the method comprising: Monitoring the filtration capability of the plurality of reactive medium portions; blocking inflow of the water only into the reactive medium portion where the filtering ability of the plurality of reactive medium portions is deteriorated; And replacing the reac- tive medium with the re-introduced groundwater.

According to the natural drainage system and the management method of the landfill groundwater according to the embodiment of the present invention, it is effective to purify and discharge the landfill groundwater to stabilize the landfill zone early, and to stabilize the groundwater level in the final disposal ground to a proper level Can be managed.

Particularly, in a marine repository, it is possible to reduce pollution with respect to retained water through a reactive medium, thereby improving the environmental properties of the reservoir and reducing the pollutant processing load in the water treatment facility.

In addition, there is an advantage that it is easy to install and dismantle houses and drainage facilities even after waste is buried in the repository.

In addition, since the filtration efficiency of the inflowed ground water is high and it is a natural drainage method, there is an economical effect for long-term maintenance and management.

In addition, a plurality of reactive medium portions for filtering groundwater are monitored, and their filtration ability is monitored to indicate the replacement time. In the case of the reactive medium portion to be replaced, only the reactive medium portion is replaced while maintaining the filtering function of the other reactive medium portion Thereby preventing the interruption of the filtration function and increasing the efficiency of maintenance.

1 is a schematic diagram illustrating a natural drainage system for landfill groundwater according to an embodiment of the present invention.
2 is a detailed view showing a collecting part according to an embodiment of the present invention.
FIG. 3 is a side view of the housekeeping, in accordance with an embodiment of the present invention. FIG.
Figure 4 is a front view depicting collection, in accordance with an embodiment of the present invention.
5 is a detailed view showing a reactive medium portion and a plurality of reactive medium portions according to an embodiment of the present invention.
6 is a flowchart showing a method of managing the natural drainage system of the groundwater of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In describing the present invention, a detailed description of related arts will be omitted in order not to obscure the gist of the present invention.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

FIG. 1 is a schematic view showing a natural drainage system of a landfill groundwater according to an embodiment of the present invention. FIG. 2 is a detailed view showing a water collecting part D according to an embodiment of the present invention, FIG. 4 is a front view of a sump (S) according to an embodiment of the present invention, and FIG. 5 is a side elevational view of an embodiment of the present invention FIG. 6 is a flowchart illustrating a method of managing the natural drainage system of the landfill groundwater of the present invention. Referring to FIG.

The landfill groundwater natural drainage system includes a sump (S) and a sump (D).

3 and 4, the dust collection S may be an open collection dust collection S having an open upper end. As another example, the dust collecting unit S may be a dust collecting unit S with a cap on the top thereof to prevent foreign matter from entering the dust collecting unit.

The dust collector S includes a housing 100 having a space therein and a purifier 200 provided inside the housing 100.

The lower end of the housing 100 may be embedded in the upper portion of the landfill L. The housing 100 includes an inlet 110 connected to the water collecting part D to receive the ground water U and a discharge part 110 for discharging the introduced ground water U to the outside of the collecting water S 120).

The inflow part 110 may be connected to the water collecting part D and may have the same height as the water collecting part D or a lower height than the water collecting part D. [ The groundwater U collected in the water collecting part D flows into the water collecting S through the inflow part 110 by gravity.

The discharge portion 120 may be provided at a lower height than the inflow portion 110. The groundwater 100 flowing into the inlet 100 is discharged to the outside of the collector S by gravity through the outlet 120 provided at a lower height than the inlet 100.

The purifier 200 may include a first shielding wall 210, a second shielding wall 220, and a reactive medium portion 230.

The first shielding wall 210 is spaced apart from the housing 100 by a predetermined distance and blocks the flow of the groundwater U flowing through the inlet 110 in the horizontal direction. An inlet is provided in the lower portion of the first shielding wall 210 so that the groundwater U flows to the lower end of the reactive medium portion 230. In one embodiment, the inlet may be bored in the lower portion of the first shielding wall 210. In another embodiment, the lower end of the first shielding wall 210 is connected to the second shielding wall 220, and the first shielding wall 210 is fixed apart from the bottom of the housing 100 The inlet may be provided.

The second shielding wall 220 may be disposed to face the first shielding wall 210 and may be disposed between the first shielding wall 210 and the second shielding wall 220, A space may be formed in which the protrusion 230 is coupled. The height of the upper end of the second shielding wall 220 is lower than that of the inflow part 110 so that the groundwater U entering the inflow part 110 passes through the reactive medium part 230 And may be discharged to the discharge unit 120 through the upper end of the second shielding wall 220.

The reactive medium portion 230 is detachably coupled to a space between the first shielding wall 210 and the second shielding wall 220 and the screen 240 is attached to the lower end surface of the reactive medium portion 230. [ Can be connected.

The groundwater U is filtered at a low speed in a state where the flow in the horizontal direction is blocked from the lower end surface to the upper end surface of the reactive medium portion 230 to have a high filtration efficiency.

4 and 5, the reactive medium portion 230 may include a plurality of reactive medium portions 230, and the plurality of reactive medium portions 230 may include a plurality of reactive medium portions 230, Can be independently replaced.

The purifier 200 may further include a sensor unit 400 for measuring a filtration capability of the reactive medium unit 230 and may include a sensor unit 400 corresponding to each of the plurality of reactive medium units 230, May be provided.

A blocking member 300 may be connected to the housing 100 or the purifying unit 200 to block the inflow of groundwater U and the blocking member 300 may be connected to the plurality of reactive medium units 230 And may be configured to correspond to each other.

Referring to FIG. 1, in an embodiment of the present invention, a water pond P is formed in which groundwater U discharged through the water collecting pool S collects, A water treatment system (F) is provided to facilitate water level and water quality management inside a marine repository. According to an embodiment of the present invention, the pollution degree with respect to the groundwater existing in the landfill can be reduced through the reactive medium, thereby improving the environmental properties of the reservoir such as the water pond P, It is effective for the operation of the drainage system by reducing the processing load. However, the water pond (P) and the water treatment facility (F) are not essential to the natural drainage system and the management method of the groundwater of the present invention.

As shown in FIGS. 1 and 2, the water collecting part D is provided between the landfill L of the landfill and the superficial layer C installed on the landfill L. As shown in FIG.

The water inside the cover layer C according to the rainfall and the water raised in accordance with the positive pressure in the landfill L are collected in the water collecting part D to form the ground water U. In one embodiment, the collecting part D may be a collecting layer formed of gravel, sand, geosynthetic fibers, or the like. In another embodiment, the collecting part D may be a hollow pipe.

According to an embodiment of the present invention, natural drainage by gravity is possible during collection, drainage, and filtration of landfill groundwater.

In addition, since only the reactive medium portion 230 having the reduced filtering ability is replaced among the plurality of reactive medium portions 230, the interruption of the filtering function is prevented.

Hereinafter, a method of managing the natural drainage system of the groundwater in the landfill will be described.

Referring to FIG. 6, the management method first filters landfill groundwater through a plurality of reactive mediums (S100). Since the groundwater flows into the inlet 110 and is filtered through each of the reactive media, the filtration capability of the reactive media may vary.

Next, the filtering ability of the plurality of reactive medium portions is monitored (S200). The sensor unit 400 may be provided to correspond to the plurality of reactive medium units. The state of the reactive medium portion is measured and monitored through the sensor portion 400 to calculate the filtering ability of each of the reactive medium portions.

After calculating the filtering ability of the reactive medium, the inflow of the groundwater is blocked only in the reactive medium portion where the filtering ability of the plurality of reactive medium portions is decreased (S300). The purge part 200 may include a blocking member 300 corresponding to the plurality of reactive medium parts. The blocking member 300 may be opened and closed independently of the other blocking members 300.

The reactive medium portion in which the introduction of the groundwater is blocked is replaced (S400). Since the plurality of reactive medium portions can be attached and detached independently of each other, the filtering function of the natural drainage system of the landfill groundwater during the replacement of the medium portion is maintained.

Thereafter, the introduction of the groundwater into the replaced reactive medium is resumed (S500).

According to the above-described management method according to the preferred embodiment of the present invention, the reactive medium can be independently replaced without interrupting the drainage system, thereby enabling economical and useful management of the drainage system.

100: housing 110: inlet
120: discharging part 200: purifying part
210: first shielding wall 220: second shielding wall
230: Reactive medium part 240: Screen
300: blocking member 400: sensor unit
S: House fix D: Housekeeper
L: Landfill C: Coconut layer
U: Groundwater F: Water treatment facility
P: Domestic water pond

Claims (10)

Modification of collection to collect and filter groundwater present in landfill; And a collecting portion connected to the collecting and extending in the longitudinal direction in the landfill,
The collection-
A housing having a space therein; And
And a purifier positioned inside the housing for filtering contaminants in the groundwater.
The method according to claim 1,
Wherein the housing comprises: an inlet for introducing the groundwater; And a discharge portion for discharging the groundwater,
Wherein the inlet is positioned higher than the outlet.
3. The method of claim 2,
The purifier may further include:
A first shielding wall;
A second shielding wall provided to face the first shielding wall; And a reactive medium part for filtering the ground water,
Wherein the reactive medium portion is detachably coupled between the first shielding wall and the second shielding wall.
The method of claim 3,
The first shielding wall is provided with an inlet through which the groundwater flows,
Wherein the second shielding wall has a height at an upper end lower than that at the inlet.
The method of claim 3,
Wherein the purifying unit further comprises a screen connected to a lower end surface of the reactive medium portion.
The method of claim 3,
Wherein the collecting unit is connected to a blocking member provided in the housing or the purifying unit to block inflow of the groundwater.
The method of claim 3,
Wherein the purifying unit further comprises a sensor unit for sensing a filtering capability of the reactive medium unit.
8. The method of claim 7,
Wherein the plurality of reactive medium portions are arranged in parallel,
Wherein the sensor unit corresponds to each of the plurality of reactive medium units.
9. The method according to claim 6 or 8,
Wherein a plurality of the blocking members are provided corresponding to the plurality of reactive medium portions.
A method for managing a drainage system for collecting and filtering groundwater present in a landfill,
Filtering the groundwater through a plurality of reactive mediums,
Monitoring the filtering capability of the reactive medium portion,
Blocking inflow of groundwater only in the reactive medium portion where the filtering ability of the plurality of reactive medium portions is deteriorated;
Replacing the reactive medium portion with the reduced filtration capability; And
And resuming the introduction of the groundwater into the replaced reactive medium part

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