KR102092168B1 - Natural draining system in land fill site and method of maintenance control thereof - Google Patents

Abstract

Disclosed is a natural drainage system and management method for landfill groundwater for drainage. The natural drainage system includes a water collecting part that collects groundwater and a water well that filters and discharges groundwater. The water collecting well includes a housing and a purification part, and the purification part may include a detachable reactive medium part and a shielding wall. The housing may include an inlet and an outlet of groundwater, and high-efficiency filtration and natural drainage of groundwater is possible depending on the configuration of the inlet, outlet, and shielding wall.

Description

NATURAL DRAINING SYSTEM IN LAND FILL SITE AND METHOD OF MAINTENANCE CONTROL THEREOF}

The present invention relates to a natural drainage system and management method for landfill water, and more particularly, to a natural drainage system and management method for landfill water to maintain groundwater at an appropriate level.

The landfill must be equipped with a rugged durable structure and a drainage facility other than culverts that can effectively collect and quickly discharge the retained water, and even if a house or drainage facility is installed to discharge the retained water in the landfill, the final disposal landfill The water quality of the water can change depending on the waste that is buried, so it is necessary to have a purification facility that properly treats the discharged water.

In particular, in the case of a marine disposal site, the water level in the disposal site may be discharged to the outside according to the water level in the marine disposal site, so it is essential to manage the water level in the disposal site.

An offshore disposal facility is a dike-type shielding facility composed of vertical car holes that block the movement of water and water structures and the upper part of the low-permeable submarine ground, and incinerates, non-combustible solid waste, dredged soil, etc. inside the shielding facility It is a facility.

In the marine repositories, since the shoreline and the water hole are installed in the state where water is present at the sea, the existing seawater is present even after the construction of the shielding facility, and the internal water level can be increased by the reclamation of waste. When the internal water level is higher than that of the external sea water, the direction of water flow within the shore and the lower ground is formed from the inside of the marine repository to the outside. Accordingly, there is a possibility that the water held inside the marine repository is discharged into the open sea through the subsea ground under the shielding facility.

When the water level in the marine repository is maintained to be slightly lower than the level of the seawater, the water flow direction in the seabed is formed from the outside of the marine repository to the inside, so that water inside the marine 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 water held inside the final disposal site can be maintained from the beginning of landfilling of wastes to the abolition of the final disposal site. Accordingly, continuous maintenance and management of related facilities is required, and technical review is needed to improve economic efficiency and efficiency in maintenance and management of houses and drainage systems.

Republic of Korea Registered Patent No. 10-1611447

The object of the present invention, invented in view of the above, is a drainage system capable of maintaining the water in the landfill at an appropriate level, and purifying the water in the landfill in an appropriate state, in particular, managing the water level and water quality in the marine disposal site. It is to provide a natural drainage system and management method of groundwater in an easy landfill.

In addition, it is to provide a natural drainage system and management method of groundwater in a landfill that is easy and economical to install and manage the house and drainage facilities in a landfill.

In order to achieve the above object, a natural drainage system for landfill water in an embodiment of the present invention is connected to a water well for collecting and filtering the ground water existing in the landfill, and connected to the water well and extended in the lengthwise direction within the landfill. Includes a catchment section.

According to an embodiment of the present invention, the water collecting well includes a housing having a space therein and a purifying part for filtering contaminants in the groundwater that is located inside the housing.

According to an embodiment of the present invention, the housing is provided with an inlet for introducing groundwater into the landfill and an outlet for discharging groundwater from the landfill, and the inlet can be positioned higher than the outlet.

According to an embodiment of the present invention, the purification unit includes a first shielding wall, a second shielding wall provided to face the first shielding wall, and a reactive medium for filtering groundwater in the landfill, and the reactive medium It may 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 may be provided with an entrance through which the groundwater of the buried ground is introduced at the bottom, and the second shielding wall may have a height at the upper end lower than that of the inlet.

According to an embodiment of the present invention, the purification unit may further include a screen connected to the lower surface of the reactive medium.

According to an embodiment of the present invention, a blocking member which is provided in the housing or the purification unit of the collecting well to block the inflow of groundwater from the landfill may be connected.

According to an embodiment of the present invention, the purification unit may further include a sensing sensor that detects the filtering capability of the reactive medium.

According to an embodiment of the present invention, a plurality of reactive medium parts may be configured in parallel, and a sensing sensor may be provided to correspond to a plurality of reactive medium parts, respectively.

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

A method of managing a natural drainage system of a landfill site in an embodiment of the present invention for achieving the above object is a management method of a drainage system that collects and filters groundwater existing in a landfill site, wherein the groundwater comprises a plurality of reactive medium parts. Filtering through, monitoring the filtration capacity of the plurality of reactive medium parts, blocking the inflow of internal water only to the reactive medium part in which the filtration capacity is lowered among the plurality of reactive medium parts, and the reactive medium with reduced filtration capability It may include the step of replacing the part, and resuming the inflow of groundwater to the replaced reactive medium.

According to the natural drainage system and management method of the landfill groundwater according to an embodiment of the present invention having the above configuration, it is effective for early stabilization of the landfill by purifying and discharging the landfill groundwater, and the groundwater level in the final disposal site to an appropriate water level. I can manage it.

Particularly, in a marine disposal site, since the degree of contamination of the retained water can be reduced through a reactive medium, it is possible to improve the environment of the reservoir and reduce the load of pollutant treatment in a water treatment facility.

In addition, there is an advantage in that it is easy to install and dismantle the house and the drainage facility even after reclaiming the waste in the disposal site.

In addition, since the filtration efficiency of the introduced groundwater is high and is a natural drainage method, it is economical for long-term maintenance and management.

In addition, it consists of a plurality of reactive medium parts for filtration of groundwater and monitors their filtration capacity to inform the replacement time, and in the case of the reactive medium part that has reached the replacement time, only the reactive medium part can be replaced while maintaining the filtration function of other reactive medium parts. This prevents disruption of the filtration function and increases maintenance efficiency.

1 is a schematic diagram showing a natural drainage system of groundwater in a landfill, according to an embodiment of the present invention.
2 is a detailed view showing a water collecting unit according to an embodiment of the present invention.
3 is a side view showing a water collecting well according to an embodiment of the present invention.
4 is a front view showing a water collecting well according to an embodiment of the present invention.
5 is a detailed view showing a reactive medium part composed of a reactive medium part and a plurality according to an embodiment of the present invention.
6 is a flow chart showing a method for managing a natural drainage system of landfill in the present invention.

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

In describing the present invention, detailed descriptions of related well-known techniques are omitted so as not to obscure the subject matter of the present invention.

The present invention is not limited to the following examples, and those skilled in the art may implement the present invention in various other forms without departing from the technical spirit of the present invention.

1 is a schematic diagram showing a natural drainage system of a landfill in a landfill 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, and FIG. 3 is a According to an embodiment of the invention, the side view showing the water collecting well (S), Figure 4 is a front view showing the water collecting well (S), according to an embodiment of the present invention, Figure 5 is in one embodiment of the present invention Accordingly, it is a detailed view showing the reactive medium section 230, and FIG. 6 is a flow chart showing a method for managing a natural drainage system of landfill in the present invention.

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

3 and 4, the sump (S) may be an open-type sump (S) with an open top. As another embodiment, the water collecting well S may be a water collecting well S with a cap on the top to prevent foreign matter from entering.

The water collecting well S includes a housing 100 having a space therein and a purifying part 200 provided inside the housing 100.

The lower end of the housing 100 may be fixed by being embedded in the upper portion of the landfill L. The housing 100 is connected to the water collecting part (D), the inlet part 110 through which the ground water (U) flows, and the discharge part through which the introduced ground water (U) is discharged to the outside of the water collecting well (S) 120).

The inlet part 110 is connected to the water collecting part D, and may be provided at the same height as the water collecting part D or lower than the water collecting part D. The ground water (U) collected from the water collecting part (D) flows into the water collecting well (S) through the inlet part 110 by gravity.

The discharge part 120 may be provided at a lower height than the inlet part 110. The ground water 100 flowing into the inlet 100 is discharged to the outside of the water collecting well S by gravity through the outlet 120 provided at a lower height than the inlet 100.

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

The first shielding wall 210 is provided spaced apart from the housing 100 by a predetermined distance, and blocks the horizontal flow of groundwater U flowing through the inlet 110. An inlet is provided at the bottom of the first shielding wall 210 so that the ground water U flows to the lower end of the reactive medium 230. In one embodiment, the entrance may be a lower portion of the first shielding wall 210 is perforated. 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 by being spaced apart from the bottom of the housing 100. The inlet may be provided.

The second shielding wall 220 may be provided to face the first shielding wall 210, and the reactive medium between the first shielding wall 210 and the second shielding wall 220 A space to which 230 is coupled may be formed. The upper height of the second shielding wall 220 is formed lower than the inlet portion 110, after the groundwater (U) entering the inlet portion 110 passes through the reactive medium portion 230 by a head difference The upper end of the second shielding wall 220 may be discharged to the discharge unit 120.

The reactive medium 230 is detachably coupled to a space between the first shielding wall 210 and the second shielding wall 220, and the screen 240 is provided on the lower surface of the reactive medium 230. This can be connected.

The ground water (U) is filtered at a low speed in a state in which the flow in the horizontal direction from the bottom surface to the top surface of the reactive medium portion 230 is blocked to have high filtration efficiency.

Referring to Figures 4 and 5, the reactive medium portion 230, may be composed of a plurality of reactive medium portion 230, the plurality of reactive medium portion 230 is the reactive medium portion of each filtration capacity Therefore, it can be replaced independently.

The purification unit 200 may further include a sensor unit 400 for measuring the filtration capacity of the reactive medium unit 230, and the sensor unit 400 may correspond to each of the plurality of reactive medium units 230. ) May be provided.

A blocking member 300 for blocking the inflow of ground water (U) may be connected to the housing 100 or the purification unit 200, and the blocking member 300 may be respectively connected to the plurality of reactive medium parts 230. It may be composed of a plurality to correspond.

Referring to Figure 1, as an embodiment of the present invention, a ground water pond (P) is formed through which the ground water (U) discharged through the water collecting well (S) is formed, to process the water in the water pond (P) A water treatment facility (F) is provided, and a drainage system that is easy to manage water level and water quality inside a marine disposal facility is disclosed. According to an embodiment of the present invention, since the degree of contamination of the groundwater existing in the landfill can be reduced through the reactive medium, the environmental characteristics of the reservoir such as the internal water pond P are improved, and pollutants in the water treatment facility F It is efficient for the operation of the drainage system by reducing the processing load. However, the internal water pond (P) and the water treatment facility (F) are not essential to the natural drainage system and management method of the inventor's landfill groundwater.

The collecting part (D) is provided between the landfill layer (L) of the landfill site and the cover layer (C) constructed on the landfill site (L), as shown in FIGS. 1 and 2.

The water inside the cover layer (C) according to the rainwater and the water rising according to the positive pressure in the landfill (L) are collected in the water collecting part (D) to form the ground water (U). As an embodiment, the water collecting part D may be a water collecting layer formed of gravel, sand, geotextile, or the like. As another embodiment, the water collecting part D may be a perforated pipe.

According to one embodiment of the present invention configured as described above, natural drainage by gravity is possible in the process of collecting, draining and filtering the groundwater in a landfill.

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

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

Referring to Figure 6, the management method is first filtered through a reactive medium consisting of a plurality of underground water in the landfill (S100). Since the ground water flows into the inlet part 110 and is filtered through each of the reactive medium parts, a variation in filtration capability between the reactive medium parts may occur.

Next, the filtration capacity of the reactive medium part composed of a plurality 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 is measured and monitored through the sensor unit 400 to calculate the filtration capacity of each of the reactive medium.

After calculating the filtration capability of the reactive medium, the inflow of the groundwater is blocked only in the reactive medium in which the filtration capability is lowered among the plurality of reactive mediums (S300). Blocking members 300 corresponding to the plurality of reactive media units may be provided in the purification unit 200, respectively. The blocking member 300 may be opened and closed independently of other blocking members 300.

Replace the reactive medium portion in which the inflow of the groundwater is blocked (S400). Since the plurality of reactive medium parts can be detached independently of each other, the filtration function of the natural drainage system of the underground water in the landfill site is maintained while the medium part is replaced.

Thereafter, the inflow of groundwater is resumed to the replaced reactive medium (S500).

According to the management method according to an exemplary embodiment of the present invention, it is possible to independently replace the reactive medium without stopping the drainage system, thereby enabling economical and useful management of the drainage system.

100: housing 110: inlet
120: discharge unit 200: purification unit
210: first shielding wall 220: second shielding wall
230: reactive medium 240: screen
300: blocking member 400: sensor unit
S: Water collector D: Water collector
L: Landfill C: Covered layer
U: Groundwater F: Water treatment facility
P: Domestic pond

Claims (10)

Catchment wells for collecting and filtering groundwater present in landfills; And
It is connected to the water collecting well and includes a water collecting part extending in the longitudinal direction in the landfill,
The water purification,
A housing having a space therein; And
Located inside the housing and includes a purification unit for filtering contaminants of the ground water,
The housing includes an inlet for introducing the ground water; And
It includes a discharge unit for discharging the ground water,
The inlet is positioned higher than the outlet,
The purification unit,
A first shielding wall;
A second shielding wall provided to face the first shielding wall; And
It includes a reactive medium for filtering the ground water,
The reactive medium portion is detachably coupled between the first shielding wall and the second shielding wall,
The water collecting well is provided in the housing or the purification part is connected to a blocking member that can block the inflow of the ground water,
The blocking member is a drainage system, characterized in that a plurality is provided corresponding to the plurality of reactive medium.
delete delete According to claim 1,
The first shielding wall is provided with an entrance through which the groundwater flows at the bottom,
The second shielding wall is a drainage system characterized in that the height of the upper end is formed to a lower height than the inlet.
According to claim 1,
The purification system further comprises a screen connected to the lower surface of the reactive medium.
delete According to claim 1,
The purification unit further comprises a sensor unit for sensing the filtration capacity of the reactive medium.
The method of claim 7,
The reactive medium portion is composed of a plurality of parallel,
Drainage system, characterized in that the sensor unit is provided to correspond to each of the plurality of reactive medium.
delete In the management method of the drainage system for collecting and filtering the groundwater existing in the landfill,
Filtering the ground water through a reactive medium consisting of a plurality,
Monitoring the filtration capacity of the reactive medium,
Blocking the inflow of groundwater only to the reactive medium portion in which the filtering ability is lowered among the plurality of reactive medium portions;
Replacing the reactive medium portion in which the filtering ability is lowered; And
And restarting the inflow of groundwater into the replaced reactive medium.

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