CN113578930B - High-efficient guide bar structure of landfill - Google Patents
High-efficient guide bar structure of landfill Download PDFInfo
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- CN113578930B CN113578930B CN202110895137.8A CN202110895137A CN113578930B CN 113578930 B CN113578930 B CN 113578930B CN 202110895137 A CN202110895137 A CN 202110895137A CN 113578930 B CN113578930 B CN 113578930B
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- gabion
- air guide
- guide gabion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to a high-efficiency guide and discharge structure of a landfill site, and belongs to the technical field of garbage treatment. In order to timely treat gas generated by garbage in a garbage landfill and eliminate potential safety hazard brought to the garbage landfill by the gas, the invention provides a high-efficiency guiding and discharging structure of the landfill, which can timely guide out the gas in the garbage landfill; installing an air guide gabion in the landfill; the gas guide gabion is vertically arranged at the bottom of the landfill; the air guide gabion is a cylindrical steel bar mesh cylinder filled with stones; the steel bar net cylinder is a cylindrical structure with a steel bar net as the surface. The methane generated in the landfill can move from bottom to top away from the landfill through the gaps of the stones in the gas guide gabions. Thereby leading out the marsh gas generated in the landfill site in time; the potential safety hazard is solved.
Description
Technical Field
The invention relates to a high-efficiency guide and discharge structure of a landfill site, and belongs to the technical field of garbage treatment.
Background
With the enlargement of urban scale and the increasing of people living standard, a great amount of urban domestic garbage is emerged, and how to treat more and more domestic garbage becomes a very important task. At present, domestic garbage disposal methods mainly comprise three forms of landfill, composting and incineration, and more than 70 percent of garbage is disposed by adopting a garbage landfill method. It follows that landfill has become a major mode of waste disposal. But after the garbage is sealed in a landfill, along with the fermentation of the garbage, some gas can be generated in the garbage landfill; the main component of these gases is biogas. On one hand, the methane is unstable, flammable and explosive gas, and if the methane is not discharged in time, potential safety hazards are brought to a landfill site. On the other hand, biogas is an energy gas, can be used for combustion and the like, and can cause energy waste without collection. Because the gas generation amount in the refuse landfill is far lower than that of leachate, the pollution is low, and the water and soil are not polluted generally; therefore, the problem of gas treatment in landfill sites is not paid much attention at present. At present, a three-dimensional composite drainage network is generally adopted for drainage and air guide in a landfill site system appearing in the society, the drainage network belongs to a drainage material with small aperture and directly covers a primary garbage pile body, and an exhaust channel is easily blocked due to the fact that impurities in landfill gas are adsorbed in gaps, and the exhaust effect is influenced.
Disclosure of Invention
The invention provides a high-efficiency guiding and discharging structure of a landfill, which can guide out gas in a refuse landfill in time in order to timely treat the gas generated by refuse in the refuse landfill and eliminate potential safety hazard brought to the refuse landfill by the gas.
The technical scheme of the invention is as follows:
a high-efficiency guide and discharge structure of a landfill comprises an air guide gabion and an air collecting device which can be matched with the air guide gabion for use;
the air guide gabion is a steel bar mesh cylinder filled with stones; the steel bar mesh cylinder is a cylindrical structure with a steel bar mesh as the surface;
the gas collecting device comprises a gas transmission pipeline and a gas storage device;
the gas guide gabion is vertically arranged at the bottom of the landfill; one end of the gas transmission pipeline is connected with the top end of the gas guide gabion, and the other end of the gas transmission pipeline is connected with a gas storage device.
The gas guide gabion is erected at the bottom of the landfill in a columnar shape; the interior is filled with the stone, exists the clearance between the stone. The density of the marsh gas is less than that of the air, so the marsh gas moves from bottom to top. The methane generated in the landfill can move from bottom to top away from the landfill through the gaps of the stones in the gas guide gabions. During the movement process of the methane in the gas guide gabion, instant negative pressure is generated on the contact surface of the gas guide gabion and a landfill site, so that the methane continuously flows from the periphery to the vicinity of the gas guide gabion and is discharged through the gas guide gabion. Thereby leading out the marsh gas generated in the landfill site in time; the potential safety hazard is solved.
In the efficient guide and exhaust structure of the landfill, the gas collecting device also comprises a gas purifying device; one end of the gas purification device is connected with the gas transmission pipeline, and the other end of the gas purification device is connected with the gas storage device through a pipeline. The gas purification device is provided with a bag type dust collector, a water absorbent and an absorbent. The bag type dust collector filters the dust-containing methane by utilizing the filtering action of the filter bag, when the dust-containing methane enters the bag type dust collector, dust with large particles and large specific gravity is settled down under the action of gravity and falls into the ash bucket, and the methane containing smaller dust is blocked when passing through the filter bag. The water absorbent includes, but is not limited to, calcium oxide to absorb water vapor in the biogas. The absorbent includes, but is not limited to, alcamines chemical agents such as N-methyldiethanolamine or ethanolamine and the like to absorb hydrogen sulfide or/and carbon dioxide in the biogas.
The efficient guide and exhaust structure of the landfill site further comprises biogas combustion equipment/and biogas power generation equipment; the marsh gas combustion equipment/and the marsh gas power generation equipment are connected with the gas storage device through pipelines. And collecting the gas led out from the landfill through the gas guide gabion, and purifying the gas by a gas purification device to obtain biogas for further utilization. If the amount of the biogas is less, the biogas directly enters biogas combustion equipment for combustion, and if the amount of the biogas is greater, the biogas enters biogas power generation equipment for power generation; thereby making full use of waste gas generated by the refuse landfill and improving the added utilization value of the refuse landfill.
In the efficient guide and discharge structure for the landfill, the gas transmission pipeline is sleeved on the surface of the gas guide gabion and can move up and down along the gas guide gabion; the biogas can be collected at different landfill stages of the refuse landfill.
The efficient guide and discharge structure for the landfill site aims to ensure that methane is smoothly guided out and simultaneously prevent garbage in the landfill site from blocking meshes of a reinforcing mesh of the air guide gabion or entering the air guide gabion to block gaps among stones in the air guide gabion; the mesh area of the reinforcing mesh of the air guide stone cage is 0.0004-0.0025m 2 。
According to the efficient guide and drainage structure for the landfill, if the volume of the stones in the air guide stone cage is too large, gaps among the stones are larger, the air guide performance is natural, but the supporting performance of the stones on the reinforcing mesh is poorer; the reinforcing mesh is easily crushed locally. If the volume of the stones in the air guide stone cage is too small, the gaps among the stones are small, and the air guide performance is naturally poor. Therefore, in order to ensure the air guide performance of the air guide gabion and the circulation of methane, the supporting performance of the stone blocks on the reinforcing mesh is met; the volume of the stones in the air guide stone cage is preferably 0.00013-0.001m 3 。
In the efficient guide and discharge structure of the landfill site, the preferred diameter of the gas guide gabion is 0.3-0.6m. The size of the gas guide gabion is obtained through many calculation experiments, and the gas guide gabion with the size can effectively ensure the quick export of the methane under the condition of occupying space as small as possible.
In the efficient guide and exhaust structure of the landfill, preferably, the mesh shape of the reinforcing mesh of the air guide gabion is regular hexagon, and the reinforcing mesh is honeycomb; the strength can be ensured under the condition of ensuring the effective total hole area.
Preferably, the gas guide gabion is vertical to the bottom of the landfill.
Above-mentioned landfill yard high efficiency drainage guide structure, preferably, the gas guide gabion is demountable installation in the landfill yard bottom.
The high-efficiency guide and discharge structure of the landfill site is not only limited to a household garbage landfill site, but also can be suitable for industrial hazardous waste landfill sites.
Advantageous effects
1. The gas generated in the refuse landfill can be timely and continuously led out, so that potential safety hazards brought to the refuse landfill by the gas can be eliminated;
2. the biogas generated in the refuse landfill can be collected, and the biogas can be combusted to provide heat or combusted to generate power; thereby realizing secondary utilization;
3. the efficient guide and exhaust structure for the landfill site has the advantages of simple structure, low manufacturing cost and easiness in mounting and dismounting.
Drawings
FIG. 1 is a schematic structural diagram of a landfill efficient drainage structure according to the present invention;
FIG. 2 is a schematic structural view of an air conducting gabion;
in the figure, 1 is a refuse landfill, 2 is an air guide gabion, 3 is an air transmission pipeline, 4 is gas storage, 5 is a steel bar net barrel, 6 is a mesh, 7 is a stone, 8 is a mounting structure, 9 is a mounting hole, and 10 is a gas purification device.
Detailed Description
The landfill efficient drainage structure of the present invention will be specifically described with reference to fig. 1.
Example 1
And measuring the size of the constructed refuse landfill 1, wherein the depth is H. The height of the air guide gabion 2 is determined according to the depth of the refuse landfill 1, so that the air guide gabion is used for guidingThe height of the gas guide gabion 2 is equal to the depth of the refuse landfill, namely the height of the gas guide gabion 2 is determined to be H. The number of the air guide gabions 2 is eight according to the capacity of the refuse landfill 1. Wherein the area of the mesh 6 of the steel bar mesh cylinder 5 is 0.0009m 2 The volume of the stone block 7 is 0.00013-0.001m 3 In the meantime. A bag type dust collector, a water absorbent and an absorbent are arranged in the gas purification device 10; the filter bag of the bag type dust collector is made of textile filter cloth; the water absorbent is calcium oxide, and the absorbent is N-methyldiethanolamine.
Selecting a steel bar mesh with regular hexagonal meshes 6 and a honeycomb shape as a material; prefabricating a steel bar net cylinder 5 with the diameter of 0.4 meter and the height of H; wherein, one end of the steel bar net cylinder 5 is provided with a mounting structure 8, and the mounting structure 8 is provided with more than three mounting holes 9 which can lead bolts to pass through; the size of the mounting hole 9 is determined according to the standard size of the bolt. And vertically placing the prefabricated reinforcement mesh cylinder 5 at the bottom of the refuse landfill 1, wherein one end with the mounting structure 8 is in contact with the bottom of the refuse landfill 1. And fixing the bolt head of the bolt matched with the mounting hole 9 of the steel bar net cylinder 4 on the fixed pile at the bottom of the refuse landfill 1, and fixing the screw rod of the bolt by using a nut through the mounting hole 9 of the steel bar net cylinder 5. The reinforcing steel bar net barrel 5 is filled with stones 7, so that the air guide gabion 2 is formed. Repeating the installation action, and finishing the installation of the remaining seven air guide gabions 2; when the device is installed, the eight air guide gabions 2 are uniformly distributed at the bottom of the refuse landfill 1. One end of a gas transmission pipeline 3 is connected with the top end of the gas guide gabion 2, and the other end of the gas transmission pipeline is connected with a gas purification device 10; the gas purification device 10 is connected with the gas storage device 4; the gas storage device 4 is connected with a biogas combustion device or a biogas power generation device. The gas transmission pipeline 3, the gas purification device 10 and the gas storage device 4 form a gas collection device. The gas storage device 4 is connected with a biogas combustion device or a biogas power generation device. Wherein, the gas transmission pipeline 3 is sleeved on the gas guide gabion 2 and can move up and down along the gas guide gabion 2. After the gas storage device 4 and the gas purification device 10 are installed, the gas storage device and the gas purification device can be landfilled, and when the gas storage device and the gas purification device are landfilled, the gas guide gabion 2 is completely landfilled with garbage. Gas generated in the refuse landfill 1 enters a gas transmission pipeline 3 through a gas guide gabion 2 and then entersThe gas purification apparatus 10 performs a purification process. The bag filter in the gas purification device 10 filters the dirty biogas by using the filtering action of the fiber fabric, when the dirty biogas enters the bag filter, the dust with large particles and large specific gravity is settled down by the action of gravity and falls into the dust hopper, and the biogas containing fine dust is blocked when passing through the filter bag. The calcium oxide water absorbent absorbs water vapor in the gas. N-methyldiethanolamine absorbent for absorbing H in gas 2 S and CO 2 . The gas is purified by the purification device 10 and then is the biogas which can meet the industrial production requirements; the biogas enters the gas storage device 4. If the amount of the biogas in the gas storage device 4 is small, the biogas enters the biogas combustion equipment to be directly combusted; if the amount of the biogas in the gas storage device 4 is larger, the biogas enters the biogas power generation equipment to generate power.
Example 2
And measuring the size of the constructed refuse landfill 1, wherein the depth is H. And determining the height of the air guide gabion 2 according to the depth of the refuse landfill 1, so that the height of the air guide gabion 2 is equal to the depth of the refuse landfill, namely determining that the height of the air guide gabion 2 is eight meters. The number of the air guide gabions 2 is nine according to the capacity of the refuse landfill 1. Wherein the area of the mesh 6 of the steel bar mesh cylinder 5 is 0.0025m 2 And the volume of the stone block 7 is 0.00013-0.001m 3 In the meantime. A bag type dust collector, a water absorbent and an absorbent are arranged in the gas purification device 10; the filter bag of the bag type dust collector is made of non-woven felt; the water absorbent is calcium oxide, and the absorbent is ethanolamine.
The reinforcing mesh with the mesh 6 of regular hexagon, honeycomb shape, length of 1.2 m and width of 1.0 m is selected as the material. Two parallel edges (two edges in the width direction) of the reinforcing mesh are bound and connected together by reinforcing steel bars, so that an assembly (hereinafter referred to as an assembly) of a reinforcing mesh cylinder 5 with the height of 1.0 meter and the diameter of 0.382 meter is formed; this action was repeated to assemble 72 assemblies. Vertically placing the prepared components at the bottom of the refuse landfill 1, and then filling the placed components with stones 7; fixing the assembly at the bottom of the refuse landfill 1 in a cement pouring mode; sequentially connecting seven components with the sameThe installed modules are connected, and after each module is connected, stone blocks 7 are filled, so that the air guide gabion 2 with the height of 8 meters and the diameter of 0.382 meter is finally formed. And repeating the action of assembling the air guide gabions 2 to assemble nine air guide gabions 2, and enabling the nine air guide gabions 2 to be uniformly distributed at the bottom of the refuse landfill 1. And after all the air guide gabions 2 are installed, refuse landfill can be carried out. When the garbage is buried to be close to the top end of the gas guide gabion 2, a gas collecting device is installed. One end of a gas transmission pipeline 3 is connected with the top end of the gas guide gabion 2, and the other end of the gas transmission pipeline is connected with a gas purification device 10; the gas purification apparatus 10 is connected to the gas storage apparatus 4. The gas storage device 4 is connected with a biogas combustion device or a biogas power generation device. The gas transmission pipeline 3, the gas purification device 10 and the gas storage device 4 constitute a gas collection device. After the gas purification device 10 and the gas storage device 4 are installed, the gas purification device can be used for landfill, and when the gas purification device is used for landfill, the gas guide gabion 2 is completely buried by the garbage. Gas generated in the refuse landfill 1 enters a gas transmission pipeline 3 through a gas guide stone cage 2 and then enters a gas purification device 10 for purification treatment, a bag type dust collector in the gas purification device 10 filters dust-containing methane by utilizing the filtering action of a non-woven felt, after the dust-containing methane enters the bag type dust collector, dust with large particles and large specific gravity falls into a dust hopper due to the sedimentation of the gravity, and methane containing fine dust is blocked when passing through a filter bag. The calcium oxide water-absorbing agent absorbs water vapor in the gas. Ethanolamine absorbent for absorbing H in gas 2 S and CO 2 . The gas is purified by the purification device 10 and then is the biogas which can meet the industrial production requirements; the biogas enters the gas storage device 4. If the amount of the biogas in the gas storage device 4 is small, the biogas enters the biogas combustion equipment to be directly combusted; if the amount of the biogas in the gas storage device 4 is larger, the biogas enters the biogas power generation equipment to generate power.
Claims (8)
1. A high-efficiency guide row structure of a landfill site is characterized by comprising an air guide gabion and an air collecting device which can be matched with the air guide gabion for use;
the air guide gabion is a steel bar mesh cylinder filled with stones; the steel bar mesh cylinder is a cylindrical structure with a steel bar mesh as the surface;
the gas collecting device comprises a gas transmission pipeline and a gas storage device;
the gas guide gabion is vertically arranged at the bottom of the landfill; one end of the gas transmission pipeline is connected with the top end of the gas guide gabion, and the other end of the gas transmission pipeline is connected with the gas storage device;
the device also comprises biogas combustion equipment/and biogas power generation equipment; the biogas combustion equipment/and the biogas power generation equipment are connected with the gas storage device through pipelines;
the gas transmission pipeline is sleeved on the surface of the gas guide gabion and can move up and down along the gas guide gabion.
2. The landfill site high efficiency drainage structure of claim 1, wherein the gas collecting device further comprises a gas purifying device; one end of the gas purification device is connected with the gas transmission pipeline, and the other end of the gas purification device is connected with the gas storage device through a pipeline; the gas purification device is provided with a bag type dust collector, a water absorbent and a hydrogen sulfide or/and carbon dioxide absorbent.
3. The efficient drainage structure for landfill sites of claim 1, wherein the mesh area of the reinforcing mesh of the air guide gabion is 0.0004-0.0025m 2 。
4. The efficient drainage structure for landfill sites of claim 3, wherein the volume of the stones in the gas guide gabion is 0.00013-0.001m 3 。
5. The efficient drainage structure for the landfill site of claim 4, wherein the diameter of the air guide gabion is 0.3-0.6m.
6. The efficient drainage structure for landfill sites of claim 5, wherein the mesh shape of the reinforcing mesh of the air guide gabion is regular hexagon, and the reinforcing mesh is honeycomb-shaped.
7. The efficient drainage structure for the landfill site of claim 6, wherein the air guide gabion is vertical to the bottom of the landfill site.
8. The efficient drainage structure for the landfill site of claim 7, wherein the air guide gabion is detachably mounted at the bottom of the landfill site.
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| CN202110895137.8A CN113578930B (en) | 2021-08-05 | 2021-08-05 | High-efficient guide bar structure of landfill |
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| CN202110895137.8A CN113578930B (en) | 2021-08-05 | 2021-08-05 | High-efficient guide bar structure of landfill |
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| CN113578930A CN113578930A (en) | 2021-11-02 |
| CN113578930B true CN113578930B (en) | 2023-03-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102906032B (en) * | 2010-05-28 | 2015-11-25 | 英派尔科技开发有限公司 | For the system and method for oxidizing of methylene |
| CN202081430U (en) * | 2011-05-26 | 2011-12-21 | 河南百川畅银实业有限公司 | Movable well head for vertical collecting well |
| CN106216343A (en) * | 2016-07-20 | 2016-12-14 | 南通天蓝环保能源成套设备有限公司 | A kind of rubbish landfill gas guide system |
| CN106592646B (en) * | 2016-12-05 | 2019-03-12 | 北京大学深圳研究生院 | A kind of dynamic bidirectional guide control method of percolate and landfill gas |
| CN211563998U (en) * | 2019-12-12 | 2020-09-25 | 南京万德斯环保科技股份有限公司 | Landfill gas guide and discharge and recycling system of refuse landfill |
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Denomination of invention: An Efficient Guide and Drainage Structure for Landfill Sites Effective date of registration: 20230919 Granted publication date: 20230324 Pledgee: Ji'nan finance Company limited by guarantee Pledgor: Shandong Zhonghai Xinke Environmental Technology Co.,Ltd. Registration number: Y2023980057539 |
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