KR101611447B1

KR101611447B1 - Leachate exhausting system of sea repository and leachate exhausting method of sea repository

Info

Publication number: KR101611447B1
Application number: KR1020150153770A
Authority: KR
Inventors: 오명학; 권오순
Original assignee: 한국해양과학기술원
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2016-04-11

Abstract

The present invention relates to a leachate drainage system and a leachate discharge method for a marine repository, comprising a reactive medium for purifying water, which is formed on the ground of a marine repository and has a built- And a floating water disposal device selectively connected to at least one of the plurality of vertical water collecting pipes installed in the sea repository and water collected in the vertical water collecting pipe to be purified and then discharged to the outside And provides a leachate discharge system and a leachate discharge method at the sea repository, which can maintain the level of the sea repository at a fixed value and purify the leachate continuously generated at the sea repository and discharge it to the outside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leachate discharge system and a leachate discharge method for a marine repository,

The present invention relates to a leachate discharge system and a leachate discharge method for a marine repository, and more particularly, to a leachate discharge system and a leachate discharge method for a marine repository applicable to a marine repository, will be.

The sea surface repository is composed of a dam-type shielding facility consisting of a revetment structure on the top of a low-permeability seabed ground and a vertical column for blocking the movement of water, and an incinerator, incombustible solid waste and dredged soil Facilities.

The marine repository is a levee consisting of a river and an aquifer, which completely prevents internal and external leachate from flowing into the sea.

Unlike landfill landfill in the land, the marine disposal site has a water reservoir inside the water, so existing seawater exists inside the shielding facility and the internal water level can be increased by landfill And also leachate may occur.

If the internal level of the sea repository blocked by the shielding facility is higher than the level of the external seawater, the direction of the water flow in the reservoir and the lower ground is formed from the inside to the outside of the sea repository. Accordingly, there is a possibility that the water inside the sea repository will flow out to the sea through the seabed under the shielding facility.

Therefore, 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, and water in the sea repository can be prevented from flowing out. Accordingly, the level of the sea repository must be maintained at the appropriate level.

On the other hand, the landfill waste landfill has a leachate drainage facility installed on the floor in a horizontal plane to purify the leachate continuously generated from the waste buried in landfill waste landfill in an appropriate state and discharge it to the outside.

However, installation of a horizontal leachate drainage facility applied to a landfill waste landfill on the lower floor at a sea repository has difficulties in construction due to restrictions on installation space at sea, and a large cost is incurred. In addition, the subsidence of the submarine ground below the marine landfill can cause damage to the horizontal drainage facility.

Korean Registered Patent No. 10-0155146 (July 13, 1998) Korean Patent Publication No. 10-2000-0013599 (March 23, 2000) Korean Registered Patent No. 10-1138053 (Apr. 12, 2012)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention, which has been made in view of the above, to provide a leachate discharge system and a leachate discharge system for a marine repository capable of maintaining the level of a marine repository at a proper value and purifying leachate generated at a marine repository in an appropriate state, And to provide a discharge method.

It is another object of the present invention to provide a leachate discharge system and a leachate discharge method for a marine repository capable of promoting the consolidation of a buried layer through discharge of pore water in a waste buried layer and reducing the contamination degree of the waste buried layer.

In order to accomplish the above object, a leachate discharge system of a marine repository of an embodiment of the present invention is a leachate discharge system of a marine repository formed on a ground of a marine repository, where the buried waste and water coexist, A plurality of vertical collecting pipes installed in a marine repository, a plurality of vertical collecting pipes connected selectively to at least one of the plurality of vertical collecting pipes, a water collecting unit for collecting the water through the vertical collecting pipe, Disposal device.

The vertical collecting pipe includes a fixed portion inserted in the ground, a water collecting portion extending in the height direction from the fixed portion and formed with a through hole on the outer circumferential surface, a reactive medium having a diameter smaller than the diameter of the water collecting portion, And a purifier unit inserted into the water collecting unit, and a scale indicating the water level of the water can be formed outside the water collecting unit.

The through holes are formed at equal intervals along the longitudinal direction of the collecting part. The vertical collecting tube has a shielding film concentric with the collecting part and mounted on the outer side of the collecting part, an adhesive attached to the lower end of the shielding film and floating on the surface of the water .

In addition, the through holes are formed at regular intervals along the longitudinal direction of the collecting part. The vertical collecting tube is concentric with the collecting part, and is sandwiched by the collecting part and is seated on the upper part of the waste. And an extension unit that is fitted and seated in the base unit.

Further, a plurality of extension units can be fitted in the catching portion so that the extension unit reaches the uppermost end of the catching portion.

In addition, the floating water disposal apparatus includes a float floating in water, a pump mounted on the upper surface of the float, a purifying facility connected to the pump and collecting and purifying water, and at least one of a plurality of vertical collecting pipes A water collecting pipe connecting the pump, and a water depth measuring device mounted on the float bottom.

The purifying apparatus also includes a primary storage tank for storing water sucked through the pump, a treatment plant for taking in water from the primary storage tank and purifying water, and a pre-discharge storage tank for storing the purified water through the treatment plant .

In addition, the depth measuring device may include a measuring sensor for measuring the distance from the surface of the water to the waste or the ground.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a method for discharging a leachate from a marine repository, which is formed on a surface of a marine repository, By measuring the distance of the water from the ground by reading the scale shown in the vertical collector pipe and calculating the depth of the water through the floating water disposal device floating in the water and measuring the thickness of the waste buried layer through the difference of the depth of water from the ground And the pumping water present in the buried layer can be extracted to the outside by increasing or decreasing the moving pressure of the pump provided in the floating water disposal apparatus.

Further, at the time of pore water extraction, a base unit and one or more extension units can be mounted on the vertical collector pipe so as to block the through-holes formed in the vertical collector pipes.

According to the leachate discharge system and the leachate discharge method of the marine repository of the present invention as described above, it is possible to maintain the level of the sea repository at a proper value.

In addition, there is an effect that the leachate continuously generated at the sea repository can be purified and discharged to the outside.

In addition, since the purified water is stored in the pre-discharge reservoir provided in the floating water disposal apparatus, when the level of the sea repository is low, it is easy to raise the level of the sea repository.

Further, it is easy to remove the pore water present in the waste buried layer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a leachate discharge system at a sea repository of an embodiment of the present invention;
FIG. 2 is a schematic view showing a connection between a vertical collector pipe and a floating water disposal apparatus provided in the leachate discharge system of the marine repository of FIG. 1;
FIG. 3 is an outline view of a water depth measuring apparatus provided in the leachate discharge system of the sea repository of FIG. 1;
FIG. 4 is an example of measuring the water depth through the leachate discharge system of the sea repository of FIG. 1;
FIG. 5 is a schematic view of a base unit and an extension unit provided in the leachate discharge system of the marine repository of FIG. 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible.

In the following description of the present invention, a detailed description of related arts will be omitted so as not to obscure the gist of the present invention.

1 to 5, a leachate drainage system of a marine repository of the present invention comprises a plurality of vertical collection pipes 100 provided in a marine repository R, and a float floating in the marine repository R And a drinking water disposal apparatus (200).

The sea surface repository R is formed on the ground L so that the water W is present therein and the waste T is introduced. A plurality of vertical collecting tubes (100) are embedded with a reactive medium (131) for purifying water (W).

The reactive medium 131 adsorbs or chemically reacts with the contaminants contained in the water W to remove the contaminants. The reactive medium 131 is made in a sand-like shape so that water can be permeated. As the reactive medium 131, steel making slag, zeolite, or the like is utilized as the reactive medium 131.

The floating water disposal apparatus 200 is connected to at least one of the plurality of vertical collector pipes 100 and collects the water W through the vertical collector pipe 100 to supply the purified water to the purifier 230 The water (W) is purified and stored or discharged outside.

The vertical collecting pipe 100 includes a fixing unit 110, a collecting unit 120, and a purifying unit 130.

The fixing portion 110 is inserted and fixed in the ground L. The collecting part 120 extends in the height direction from the fixing part 110, and a through hole 121 is formed in the outer peripheral surface.

The through holes 121 are formed at regular intervals along the longitudinal direction of the collecting part 120. It is preferable that a porous network is provided in the through hole 121 so that the solid material contained in the water W does not flow into the collector 120.

A scale 124 indicative of the water level of the water W is formed on the outside of the water collecting part 120. The scale 124 indicates the distance from the ground L to the surface of the water W. A camera or a laser is provided as the sensing device 260 for sensing the scale 124 formed on the water collecting part 120 in the sea treatment plant R or the floating water treatment device 200.

The purifying part 130 has a diameter smaller than the diameter of the water collecting part 120 and is inserted into the water collecting part 120. The purifying part 130 is formed in the shape of a pipe and a porous metal mesh is mounted on the upper and lower openings so that the built-in reactive medium 131 is not separated by the water W flow. A guide 122 on which the purifying part 130 is seated is formed on the inner surface of the upper end of the collecting part 120. A hollow lid 123 is provided at the upper end of the collecting part 120 to prevent the purifying part 130 from being separated.

The vertical collector pipe 100 of the embodiment of the present invention includes a shielding film 140 concentric with the collector 120 and attached to the outer side of the collector 120, And a buoy 150 floating on the surface of the water W.

The shielding film 140 prevents the atmospheric air from flowing into the catching part 120 through the through hole 121 positioned at the upper surface of the water W. [

The shielding film 140 is fabricated to have an inner diameter larger than the outer diameter of the collecting part 120. A rubber pad 141 is provided at the uppermost end of the shielding film 140. The shielding film 140 is fixed to the catching part 120 through the rubber pad 141.

The vertical collecting pipe 100 of the embodiment of the present invention includes a base unit 160 concentric with the collecting unit 120 and sandwiched by the collecting unit 120 and seated on the waste T, And an extension unit 170 which is concentric with the housing unit 120 and is seated in the base unit 160.

A plurality of extension units 170 can be fitted into the catcher 120 so that the extension unit 170 reaches the uppermost end of the catcher 120. [

The base unit 160 is manufactured to have an inner diameter larger than the outer diameter of the water collecting part 120 and a disk shaped seating part 161 is formed at the lower end so as to be able to be placed in the waste T layer, The rubber pad 162 is formed so as to be able to seal the base unit 160 by coming into tight contact with the base unit 120. And the rubber pads 162 are manufactured in the shape of a lowered pipe.

The extension unit 170 is also manufactured to have an inner diameter larger than the outer diameter of the water collecting unit 120. The lower end of the extension unit 170 is formed so that the inner surface thereof is machined so as to be in close contact with the rubber pad 162 formed on the base unit 160 do. The upper end of the extension unit 170 is provided with a rubber padding 171 having a downwardly-upwardly projecting shape so as to be able to seal the extension unit 170 by being in close contact with the catching portion 120.

The water W is introduced into the water collecting part 120 through the through hole 121 by blocking the through hole 121 located above the waste T layer through the base unit 160 and the extension unit 170 And only the pore water existing in the waste (T) buried layer can be collected.

The floating water disposal apparatus 200 includes a float 210, a pump 220, a purification facility 230, a collecting pipe 240, and a water depth measuring device 250.

The float 210 is fabricated to float on the water W surface. The float 210 is preferably provided with navigation, a motor and a steering device which can utilize the vessel and can move the floating water disposal apparatus 200 to a specific position.

The pump 220 is mounted on the upper surface of the float 210. The pump 220 can be supplied with electric power from a lead wire and supplied with electric power from the lead-acid battery loaded in the float 210.

The purification facility 230 includes a facility for biologically and chemically treating the water W sucked through the pump 220.

The purification facility 230 includes a primary storage tank 231 for storing the water W sucked through the pump 220 and a primary storage tank 231 for receiving the water W from the primary storage tank 231, A treatment plant 232 that chemically purifies water, and a pre-discharge reservoir 233 that stores the purified water W through the treatment plant 232.

The treatment plant 232 is provided with a calculation device capable of calculating the biological oxygen demand and the chemical oxygen demand of the water W and an administration device capable of administering oxygen and oxidant to the water W introduced into the treatment plant 232. [ .

The pre-discharge storage tank 233 receives the purified water W through the treatment plant 232. When the water level of the sea repository R is low, the purified water W is introduced into the sea repository R Thereby increasing the water level of the sea repository (R).

The water collecting pipe 240 connects the pump 220 to at least one of the plurality of vertical collecting pipes 100. The water collecting pipe 240 can be manufactured to have a plurality of fork-like shapes in one body.

The depth measuring device 250 is mounted on the lower surface of the float 210. The water depth measuring apparatus 250 measures the distance from the surface of the water W to the surface of the waste (T) buried layer or the distance to the ground L. The depth measuring device 240 uses a sonar, a laser optical device, and the like.

The distance of the water W from the ground L is measured based on the scale 124 provided in the water collecting part 120 and the water W is discharged through the floating water disposal device 200 floating on the water W The thickness of the waste (T) buried layer can be derived by calculating the depth of the water (W) and calculating the difference in depth of the water (W) from the ground (L)

The operation pressure of the pump 220 is increased or decreased to extract the pore water present in the waste (T) buried layer so as to generate the suction pressure calculated according to the thickness of the waste (T) buried layer.

At this time, by providing the base unit 160 and the extension unit 170 in the collecting part 120, the through hole 121 in contact with the water W is closed to increase the pore water extraction efficiency.

In one embodiment of the present invention configured as described above, when the water level of the water W falls, ambient air is introduced into the collector pipe 120 through the shielding film 140 provided outside the collector pipe 120 Is prevented.

In addition, the thickness of the waste (T) buried layer can be derived through the scale 124 and the depth measuring device 240 displayed on the collecting part 120 and the suction pressure calculated according to the thickness of the waste (T) By operating the pump 220, it is possible to extract the pore water present in the waste (T) buried layer.

Particularly, since the base unit 160 and the extension unit 170 are installed in the collecting part 120, the extraction of pore water present in the waste (T) buried layer is maximized.

According to the leachate discharge system and the leachate discharge method of the present invention having the above-described structure, the vertical collection pipe 100 is installed in the sea repository R and the floating water treatment apparatus 200 irrelevant to the installation of the facility The leachate drainage facility, which has been applied to the landfill (T) landfill in the past, can be realized by putting the leachate into the sea repository (R).

Particularly, since the water level of the water W existing in the sea surface repository R can be maintained at a proper value, damage to the shield surface constituting the sea surface repository R, which can be caused by the difference in height from the sea water S, is prevented.

As described above, the leachate discharge system and the leachate discharge method of the marine repository according to the present invention have been described with reference to the drawings. However, the present invention is not limited to the embodiments and drawings disclosed in the present specification, It is needless to say that various modifications can be made by those skilled in the art within the scope of the technical idea.

100: vertical house water pipe
110:
120:
121: Through hole
122: Guide
123: Lid
124: graduation
130:
131: Reactive medium
140: shielding film
141: Rubber pads
150: Boo
160: Base unit
161:
162: Rubber pads
170: extension unit
171: Rubber pads
200: floating water disposal device
210: float
220: pump
230: Purification facility
231: Primary storage
232: processing plant
233: Reservoir before discharge
240: Collecting pipe
250: Depth measuring device
260: sensing device
L: Ground
R: Marine repository
W: Water
S: Seawater
T: Waste

Claims

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In a leachate discharge system of a marine repository formed on the surface of a marine repository ground, where the landfilled waste and water coexist,
A plurality of vertical collecting tubes installed in the water repository, wherein a reactive medium for purifying the water is embedded;
And a floating water disposal device selectively connected to at least one of the plurality of vertical water collecting pipes and collecting the water through the vertical water collecting pipe,
The vertical collecting pipe may include:
A fixing part inserted into the ground;
A collecting portion extending in the height direction from the fixing portion and having a through hole formed on an outer peripheral surface thereof;
And a purging portion having a diameter smaller than the diameter of the purging portion and inserted into the purging portion,
A scale indicating the water level of the water is formed outside the water collecting section,
Wherein the through holes are formed at regular intervals along the longitudinal direction of the collecting portion,
The vertical collecting pipe may include:
A shielding film concentric with the collector and mounted on the outside of the collector;
Further comprising a buoy attached to the lower end of the shielding membrane and floating on the surface of the water.

In a leachate discharge system of a marine repository formed on the surface of a marine repository ground, where the landfilled waste and water coexist,
A plurality of vertical collecting tubes installed in the water repository, wherein a reactive medium for purifying the water is embedded;
And a floating water disposal device selectively connected to at least one of the plurality of vertical water collecting pipes and collecting the water through the vertical water collecting pipe,
The vertical collecting pipe may include:
A fixing part inserted into the ground;
A collecting portion extending in the height direction from the fixing portion and having a through hole formed on an outer peripheral surface thereof;
And a purging portion having a diameter smaller than the diameter of the purging portion and inserted into the purging portion,
A scale indicating the water level of the water is formed outside the water collecting section,
Wherein the through holes are formed at regular intervals along the longitudinal direction of the collecting portion,
The vertical collecting pipe may include:
A bottom unit concentric with the collecting part and fitted in the collecting part to be seated on the waste;
Further comprising an extension unit concentric with the water collecting unit and fitted in the water collecting unit to be seated in the base unit.

5. The method of claim 4,
Wherein a plurality of extension units are fitted in the catching part so that the extension unit reaches the uppermost end of the catching part.

The method according to claim 3 or 4,
The floating water disposal apparatus includes:
A float floating on the water;
A pump mounted on the upper surface of the float;
A purifier connected to the pump and collecting and purifying the water;
A water collecting pipe connecting the pump to at least one of the plurality of vertical collectors;
And a water depth measuring device mounted on the float bottom.

The method according to claim 6,
The purifying apparatus includes:
A primary storage tank in which water sucked through the pump is stored;
A treatment plant for taking up the water from the primary reservoir and purifying the water;
And a pre-discharge reservoir for storing purified water through the treatment plant.

The method according to claim 6,
The depth-
And a measurement sensor for measuring a distance between the surface of the water and the waste or the ground.

A method for discharging a leachate from a marine repository, which is formed on the surface of a marine repository ground and in which the landfilled waste and water coexist,
Measuring a distance from the ground by reading a scale indicated in a vertical collecting pipe provided in the sea repository,
Calculating a depth of the water through a floating water disposal device suspended in the water,
Calculating a thickness of the waste buried layer through a difference in depth of the water at the distance of the water from the ground,
Wherein the pumping water existing in the buried layer is extracted to the outside by increasing or decreasing the operating pressure of the pump provided in the floating water disposal apparatus.

10. The method of claim 9,
Upon extraction of the pore water,
And a base unit and at least one extension unit are mounted on the vertical collector pipe so as to block the through-holes formed in the vertical collection pipe.