WO2012157947A2

WO2012157947A2 - Waste landfill with an organic wastewater pond constructed therein

Info

Publication number: WO2012157947A2
Application number: PCT/KR2012/003815
Authority: WO
Inventors: 강호정; 한재희; 길영준
Original assignee: 주식회사 도화엔지니어링
Priority date: 2011-05-16
Filing date: 2012-05-15
Publication date: 2012-11-22
Also published as: WO2012157947A3; PE20140450A1; KR101102379B1

Abstract

The The present invention relates to a circulating waste landfill which comprises: a waste layer (10); and a soil covering layer (20), wherein both of said layers are formed into multiple layers, and which collects organic wastewater and injects the collected wastewater back to the upper portion of said waste layer (10), to thereby promote the decomposition of waste and stabilization of a burial layer. A pond (30) filled with a filler material such as crushed stone or gravel is constructed in the uppermost waste layer (10). A gabion (35) is installed at the bottom of the pond (30), and a filler material such as crushed stone or gravel is then placed on the upper portion of the gabion (35) so as to prevent the pond (30) from becoming deformed, falling, or collapsing due to the self-weight of and overburden load on the pond (30). According to the present invention, the structural stability of the pond (30) for supplying and impregnating organic waste water into a waste landfill may be ensured, thus maximizing the circulation of organic wastewater and improving the efficiency of the decomposition of waste and exhibits the effect of stabilizing the waste landfill.

Description

Landfill Site with Organic Wastewater Pond

The present invention relates to a circulating waste landfill having a waste layer (10) and a cover layer (20) formed in multiple layers and collecting organic wastewater and re-injecting it into the upper waste layer (10) to promote the decomposition of waste and stabilization of the landfill layer. To, constituting the ponde 30 is filled with filler such as crushed stone and gravel in the upper waste layer 10, once the gabion 35 is installed on the bottom of the pond 30 and the crushed stone on the gabion 35 By installing a filler such as gravel, it is possible to prevent the ponde 30 from being deformed, crushed, and disintegrated due to the self-load and the load of the ponder 30.

Waste treatment by landfill is to induce spontaneous decomposition by repeating the process of stacking the waste to a predetermined height and then laying the soil layer or similar particulate shield on the surface of the stacked waste to form a cover layer 20. At the same time, it is naturally decomposed and stabilized while continuing to settle by loads such as self weight and cover layer 20. Organic wastewater and gas generated in this process are recovered and treated by a pipeline facility in a landfill and an external site.

After forming the base through the usual facilities and excavation, and then forming a coating layer (11) to block the inflow of the surrounding ground such as organic waste water, constitute a waste landfill, the bottom portion of the landfill, that is, the coating layer (11) Perforated pipes connected to the external collection well 81 in the upper portion of the horizontal collection of organic wastewater, the gas is discharged to the outside through the exhaust pipe 60 embedded in the stacked waste.

The organic wastewater collected by the sump 81 is purged and discharged, or transported to the upper layer of the stacked waste and re-supplied to the waste layer 10 to maintain the water content and organic matter in the landfill, thereby promoting the decomposition of the waste. The gas is released into the atmosphere or collected and used as fuel.

In the circulation of the organic wastewater, the organic wastewater supplied from the outside as well as the organic wastewater generated by itself may be additionally condensed for the purification of the external wastewater or to maintain the water content and organic matter content in the landfill.

As a specific method of supplying and circulating the organic wastewater to the landfill, the sprayed organic wastewater may be simply sprayed onto the upper layer of the waste layer 10 or may be simply injected through a pipeline installed in the waste layer 10 or the waste layer 10. And a method of forming a pond 30 in which the organic wastewater is temporarily stored in the wastewater layer 10. Among these, a method of forming the pond 30 in the waste layer 10 includes the supplied organic wastewater in the waste layer 10. As it can be delivered to the lower part without being biased in part, it is generally applied to recently constructed landfills.

The organic wastewater storage and supply pond 30 formed in the waste layer 10 is a type of tangential storage reservoir filled with particulate filler such as crushed stone and gravel, and when the waste layer 10 is stacked in a predetermined layer height, the upper portion is opened. After filling, the particulate filler is formed and formed, and a manhole 51 having an injection pipe 50 through which organic waste water is pumped and supplied and a valve facility for opening and closing the injection pipe 50 are usually formed on the upper portion of the pond 30. ) And the exhaust pipe 60 for discharging the gas to the outside is installed.

As such, the particulate filler-filled pond 30 is formed in the waste layer 10 to store the organic wastewater, and then penetrate the waste layer 10, so that the organic wastewater penetration area into the waste layer 10 is reduced compared to a simple pipeline supply. It is possible to expand rapidly and provide stable supply of organic wastewater.

As described above, the organic wastewater supply ponds 30 formed in the waste layer 10 are formed on top of the waste layer 10 having a predetermined height or more, and the waste layer 10 has a significantly lower bearing capacity than the general ground. In addition, since the continuous consolidation and settlement proceeds only by the weight of the waste layer 10, as shown in FIG. 3, after the formation of the pond 30, the upper portion of the upper layer including the self-weight and the cover layer 20 of the filler in the pond 30 is formed. It is highly likely that irregular settlement of the waste layer 10 below the pond 30 is caused by the lagging load due to the lamination, which causes settlement, depression and breakdown of the pond 30 and the upper layer of the pond 30.

The settlement, depression and breakdown of the pond 30 in the waste layer 10 dramatically alters the effective cross section of the pond 30 to prevent organic wastewater retention and stable penetration of the pond 30, as well as in FIG. 3. As such, it causes a serious collapse of the circulating function of the organic wastewater in the landfill by causing the accompanying collapse of the auxiliary facility, such as the injection pipe 50, the manhole 51 and the exhaust pipe 60 installed in the pond 30 .

In addition, in the infiltration of organic wastewater into the waste layer 10, since the penetration area is limited to the bottom and side surfaces of the pond 30, there is no limit to the infiltration and circulation efficiency of the organic wastewater, and far from the pond 30. Infiltration of organic wastewater into the distant point or deep wastewater layer 10 is inevitably limited, thereby expanding the size and location of the pond 30 to achieve the desired organic wastewater infiltration and circulation effects. There was a serious problem that the cost of landfill construction was increased.

The present invention has been made in view of the above-described problems, the coating layer 11 is formed in the base portion, the waste layer 10 and the cover layer 20 is repeatedly laminated on the coating layer 11, the upper portion of the coating layer 11 A water collecting pipe 80 is installed at the water supply pipe 80 and is connected to the water collecting pipe 80 to supply the organic wastewater collected at the top waste layer 10. An exhaust pipe 60 for discharging gas to the outside is installed. In the circulating waste landfill is installed, the top of the waste layer 10 is filled with particulate filler and a pond (pond 30) is connected to the injection pipe 50 is formed, the bottom and side of the pond 30 A plurality of gabions 35 filled with particulate fillers are installed in the closed mesh, and the particulates are installed on the gabions 35 to fill the inside of the pond 30, and the pond is injected through the injection pipe 50. The organic wastewater supplied to the wastewater layer 30 is disposed through the bottom and side surfaces of the pond 30. 10) A landfill site equipped with organic wastewater ponds characterized by permeation.

In addition, the waste layer 10 of the lower gabion 35 of the pond 30, the top is open and the lower end of the classification pipe 90 is introduced, the upper diameter of the classification pipe 90, the classification pipe 90 Discrete disc (95) drilled in the center of the coupling hole (96) coinciding with the outer diameter of the) is coupled, the plurality of alternating slits 91 are cut in the longitudinal direction of the classification tube (90) To connect the inside and outside of the classification pipe (90), the upper and lower adjacent alternating slit (91) is cut to form a right angle to the central axis of the classification pipe (90), the upper surface of the receiving panel (95) is a pond (30) In close contact with the bottom surface of the gabion 35, the organic wastewater supplied to the pond 30 through the injection pipe 50 penetrates into the waste layer 10 through the bottom and side surfaces of the pond 30, and at the same time, a water tank ( 95) and the organic wastewater pond is installed, characterized in that discharged and penetrated into the waste layer (10) through the alternating slit (91) after flowing into the classification pipe (90) It is a landfill.

And in the method for constructing the pond 30, the excavation step (S10) to form a pond 30 of the formulation cross-section by attaching the waste layer 10, and a plurality of bottom and sides of the pond 30 A classifying pipe installation step (S11) for injecting a classifying pipe 90 into the waste layer 10 by typing a classifying pipe 90, and an accompaniment board coupling the accommodating board 95 to the top of the classifying pipe 90. Coupling step (S12), and the gabion installation step (S21) and the gabion (35) to closely install a plurality of gabions (35) filled with particulate filler inside the closed mesh on the bottom and side of the pond (30) ) Is a pond construction method of a waste landfill having organic wastewater ponds, characterized in that it consists of a pond filling step (S22) in which a particulate filler is formed on the top to fill the inside of the pond 30. .

Through the present invention, it is possible to ensure the structural stability of the organic wastewater supply and infiltration ponds 30 in the landfill, thereby maximizing the circulation function of the organic wastewater, and improve the decomposition efficiency of the waste and stabilization effect of the landfill. have.

In addition, the infiltration and circulation efficiency of the organic wastewater can be improved without expanding the size of the pond 30 or the number of installation points through the classification pipe 90 that is introduced into the waste layer 10 to promote the diffusion of the organic wastewater. As a result, the cost of landfill construction can be reduced.

1 is a representative cross-sectional view of the pond of the present invention

2 is a representative cross-sectional view of a landfill site to which the present invention is applied

Figure 3 is a diagram illustrating a state of destruction of a conventional landfill pond

4 is an explanatory view of the pond construction process of the present invention

5 is a cross-sectional view of the laminated state of the landfill to which the present invention is applied

6 is a representative cross-sectional view of the pond of the present invention to which the classification pipe is applied;

7 is a detailed view of the classification pipe of the present invention

8 is an explanatory view of the pond construction process of the present invention to which the classification pipe is applied

10: waste layer

11: coating layer

20: cover layer

30: pond

35: Gabion

40: injection tablet

50: injection tube

51: manhole

60 exhaust pipe

70: infusion tube

80: water collecting pipe

81: sump

90: classification pipe

91: alternating slit

92: annular protrusion

95: head

96: coupling hole

S10: excavation stage

S11: Classification pipe installation step

S12: concomitant coupling step

S21: Gabion installation stage

S22: Pond charging stage

The detailed configuration and implementation of the present invention will be described with reference to the accompanying drawings.

First, Figure 1 is a representative cross-sectional view showing the pond 30 of the present invention, as can be seen through the figure, the pond 30 of the present invention is a crushed stone and the ponde 30 formed in the waste layer 10 Rather than simply laying particulate filler such as gravel, it is formed by installing a plurality of gabions 35 on the bottom and side of the pond 30 once and then installing particulate fillers on the gabions 35.

FIG. 2 is a representative cross-sectional view of a waste landfill to which the present invention is applied, and as shown in FIG. 1 and FIG. 1, organic wastewater collected into a collecting well 81 through a collecting pipe 80 is once ponded through an injection pipe 50. 30 is injected into the upper part, and passes through the pores between the installed particulate filler, and then penetrates into the waste layer 10 through the gabion 35 on the bottom and side surfaces of the pond 30.

4 illustrates a process of constructing the pond 30 of the present invention, and once the waste layer 10 is attached to form the pond 30 of the open formulation cross section, the bottom surface of the pond 30 and The gabion 35 is installed in close contact with the side, and the particulate filler such as crushed stone and gravel is laid on the gabion 35.

The gabion 35 applied to the present invention is filled with particulate fillers such as crushed stone and gravel inside the metal-combined mesh, and a plurality of the gabions 35 are closely installed on the exposed surface, that is, the bottom and the side of the attached pond, The gabions 35 are installed to maintain close contact with each other, so that the entire gabions 35 installed in the pond 30 have a kind of container shape.

Pond 30 is completed by laying crushed stone and gravel on top of the gabion 35 installed in the form of a container, thereby dispersing the load of the particulate material and other loads placed on the pond 30 and at the same time By improving the bottom binding force, the entire structure of the pond 30 can be firmly formed.

Although not shown, by closely mounting the gabion 35 on the bottom and side of the pond 30, the adjacent gabions 35 are integrated by a wire or the like, and are subsequently generated due to the self-load and the load of the ponder 30 filler. It is desirable to minimize the cross-sectional shape change of the pond 30 and loosening of the filled state of the particulate filler.

5 is a cross-sectional view of a laminated state of a waste landfill to which the present invention is applied. As shown in the figure, as the waste is buried, a cover layer 20 and a new waste layer 10 are formed on the top of the pond 30. Although repeatedly stacked, when the present invention is applied, the structure and function of the pond 30 can be maintained even if the load of the land continues to increase according to the landfill.

On the other hand, as shown in Figure 5, when the new waste layer 10 is formed above the predetermined height above the pond 30, the new pond 30 is installed, the upper pond 30 and the lower pond 30 It is common to connect through the injection well 40, which is a vertical shaft filled with crushed stone and gravel, and the injection well tube in the form of a perforated tube in the center of the injection well 40 for the smooth movement of organic wastewater between the upper and lower ponds 30. 70) is installed.

Since the organic wastewater supplied to the upper pond 30 through the injection well 40 and the infusion tube 70 can flow down quickly to the lower pond 30, the organic wastewater smoothly flows into the lower waste layer 10. The organic wastewater can be continuously discharged through the outer circumferential surface of the injection well 40 filled with the particulate filler, thereby promoting the organic wastewater diffusion into the entire waste layer 10.

However, as can be seen through Figure 5, the injection well 40 and the infusion tube 70 is a structure that mainly serves as a passage connecting the upper pond 30 and the lower pond 30, waste layer ( Compared to 10), the outflow effect through the outer circumferential surface of the injection well 40 can hardly be expected due to the characteristics of the injection well 40 having a superior permeability coefficient, and the diffusion range is also limited.

Thus, in the present invention, as shown in Figure 6, by radially injecting a plurality of classification pipe 90 in the waste layer 10, the bottom of the pond 30, the organic wastewater stored in the pond 30, the bottom of the pond 30 The waste layer 10 can be quickly and widely spread.

The classification pipe 90 of the present invention, as shown in Figure 7, the upper end is open and the lower end is closed, a plurality of alternating slits 91 formed on the outer peripheral surface, the lower end is sharply processed waste layer 10 Easy type to be possible.

In addition, the coupling hole 96 whose inner diameter coincides with the outer diameter of the classification pipe 90 is coupled to the upper end of the classification pipe 90 by the disc-shaped acicular disc 95 drilled in the center, and the organic matter stored in the pond 30 is stored. The wastewater is smoothly introduced into the classification pipe 90, and an annular protrusion 92 is formed at the upper end of the classification pipe 90 to support the lower edge of the coupling hole 96 of the cornice 95. Allow the floor load acting on) to be transferred to the classification pipe (90).

Such a classification pipe 90 performs two roles, and serves to quickly transfer and diffuse the organic wastewater stored in the pond 30 to the core of the waste layer 10, and the upper surface of the pond gabion 30. (35) The role of supporting the self-load and the loading load of the pond 30 delivered through the handbarrow 95 in close contact with the lower surface through the main surface friction force of the classification pipe 90.

Therefore, the classification pipe 90 should be secured at the same time as the outlet of the organic wastewater is formed, and also the strength to withstand the impact of the type, the general perforated pipe can not withstand the type impact, in the present invention to maximize the effective cross section of the tube The alternating slit 91 is cut and formed in the classification pipe 90 so as to enable a smooth outflow of the organic wastewater.

The alternating slit 91 is arranged in such a way that a plurality of slits, that is, incisions, are formed in the longitudinal direction of the classifying tube 90, so that up and down adjacent slits are not formed on the same straight line. By doing so, the classification tube 90 erosion from the mechanical point of view is prevented from being biased at a specific site.

In the embodiment shown in Figure 7 a plurality of alternating slit 91 is cut in the longitudinal direction of the classification pipe 90 to connect the inside and outside of the classification pipe 90, the upper and lower adjacent alternate slit 91 is the classification pipe It can be seen that the incision is made at right angles to the central axis of the axis (90), whereby the organic wastewater stored in the pond 30 is introduced into the sump (95) and the classification pipe (90) and then through the alternating slit (91) It is discharged and penetrated into the waste layer 10.

Referring to the construction process of the present invention pond 30 is applied to such a classification pipe 90 as follows.

First, the excavation step (S10) of attaching the waste layer 10 to install the pond 30 to form an open pond 30 of the cross section of the formulation is performed.

When the excavation of the pond 30 is completed, the classification pipe installation step (S11) of injecting the classification pipe 90 into the waste layer 10 by typing a plurality of classification pipe 90 on the bottom and side of the pond (30) Wherein, the classifier pipe 90 is a classifier pipe 90 in a state where the accommodating head 95 is separated, and may be typed in the same manner as a general pile.

When the type of classification pipe 90 is completed, a subsurface coupling step (S12) of coupling the subsurface 95 to the top of the classification pipe 90 is performed, and then closes to the bottom and side of the pond 30. A gabion installation step (S21) of closely installing a plurality of gabions 35 filled with particulate filler inside the network is performed.

When the installation of the gabion 35 is completed, the pond of the present invention is formed through a pond charging step (S22) of forming a cross-sectional pond (30) by filling the inside of the pond (30) by installing particulate filler on the gabion (35). 30 is completed.

As described above, by installing the gabion 35 in the lower portion of the pond 30, it is possible to ensure the structural stability of the pond 30, the classification pipe 90 is introduced into the waste layer 10 of the lower pond 10 Through this, it is possible to improve the penetration and circulation efficiency of organic wastewater without expanding the size of the pond 30 or the number of installation points.

Claims

The coating layer 11 is formed on the base portion, and the waste layer 10 and the cover layer 20 are repeatedly stacked on the coating layer 11, and a collecting pipe 80 is installed directly on the coating layer 11 and the collecting pipe 80 is provided. Injecting pipe 50 for supplying the organic wastewater collected in the top waste layer 10 is connected to the exhaust pipe is installed, the exhaust pipe 60 for discharging the gas to the outside is installed, the top of the waste layer (10) In a circulating waste landfill in which a filling material is filled and a pond 30 to which an injection pipe 50 is connected is formed,

On the bottom and side of the pond 30, a plurality of gabions 35 filled with particulate filler inside the closed network is in close contact with the entire gabions 35 installed in the pond 30 to form a container;

Particulate filler is installed on the top of the gabion 35 to fill the inside of the pond 30, and the top of the waste layer 10 of the bottom of the gabion 35 of the pond 30 is opened, the bottom is closed, and the bottom is sharply processed. A plurality of classification pipe 90 is radially typed, the upper end of the classification pipe 90, the inner diameter is matched with the outer diameter of the classification pipe 90, the disc-shaped accompaniment (95) is drilled in the center Are combined;

In the classifier pipe (90), a plurality of alternating slits (91) are cut in the longitudinal direction of the classifier tube (90) to connect the inside and outside of the classification pipe (90), but the upper and lower adjacent alternate slits (91) are classified in the classifier tube (90). Incision perpendicular to the central axis of the axis;

An upper end portion of the classifying pipe 90 is formed with an annular protrusion 92 supporting the lower edge of the coupling hole 96 of the accommodating plate 95 so that the load of the load acting on the accommodating plate 95 is transmitted to the classifying pipe 90. Become;

The upper surface of the sump (95) is in close contact with the lower surface of the gabion (35) of the pond 30, the organic wastewater supplied to the pond 30 through the injection pipe 50 through the bottom and side of the pond 30 At the same time as the waste layer 10 is penetrated into the wastebasket (95) and the sorting pipe (90) and the organic wastewater pond is installed, characterized in that discharged and penetrated into the waste layer (10) through the alternating slit (91) Landfill.