CN112404089B - Safe landfill disposal and emergency system for hazardous waste - Google Patents
Safe landfill disposal and emergency system for hazardous waste Download PDFInfo
- Publication number
- CN112404089B CN112404089B CN202011330825.1A CN202011330825A CN112404089B CN 112404089 B CN112404089 B CN 112404089B CN 202011330825 A CN202011330825 A CN 202011330825A CN 112404089 B CN112404089 B CN 112404089B
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- landfill
- gas
- percolate
- layer
- liquid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention relates to the technical field of landfill, in particular to a safe landfill disposal and emergency system for hazardous waste, which is characterized by comprising the following components: landfill site, gas-liquid separation device, gas purification device and percolate treatment device; the landfill is sequentially provided with a covering layer, a landfill area, a percolation layer, a stratum film and a waterproof lining layer from top to bottom; the percolate treatment device is respectively communicated with the gas-liquid separation device and the percolation layer; the landfill area is internally provided with the compaction device which is configured to compact the waste in the landfill area and discharge the extruded waste gas liquid to the gas-liquid separation device for treatment, so that the problems that the landfill treatment time is too long, the leakage of the percolate is not subjected to emergency treatment, and the pollution of the infiltration liquid to the underground water is avoided.
Description
Technical Field
The invention relates to the technical field of landfill, in particular to a safe landfill disposal and emergency system for dangerous wastes.
Background
With the development of industry, the discharge of hazardous waste from industrial production processes is increasing. The annual hazardous waste production worldwide is estimated to be 3.3 hundred million tons. Because of the serious pollution and potential serious impact of hazardous waste, it is important to find a way to safely dispose of hazardous waste.
The safe landfill is mainly used for disposing dangerous waste, and the method is used for disposing the dangerous waste in the safe landfill site, so that the landfill waste can be prevented from contacting with the surrounding environment. In the prior art, a safe landfill site (CN 207521413U) for dangerous wastes comprises a sealing field covering layer, a bottom impermeable layer and a base layer, wherein a closed cavity for accommodating the dangerous wastes is formed between the sealing field covering layer and the bottom impermeable layer; another seepage-proofing structure (CN 205296241U) for the expansion of the sealed field of the dangerous waste safe landfill, which comprises an expansion percolate guide and discharge layer, an expansion seepage-proofing layer, an expansion protection layer, a sealing field seepage-proofing layer and a landfill gas guide and discharge layer which are sequentially arranged from top to bottom, can collect the landfill gas of the sealed field dangerous waste pile body, and ensures that the dangerous waste pile body under the sealing field seepage-proofing layer does not adversely affect the expanded landfill field; meanwhile, a double-layer HDPE geomembrane seepage-proofing structure is adopted, so that the newly buried hazardous waste is prevented from leaking, the environment is polluted, and percolate generated by the hazardous waste is collected. Although the method is not easy to leak, no emergency measures are provided, and the reaction time is long.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the existing dangerous waste safe landfill technology, and provides a safe landfill disposal and emergency system for dangerous waste, which can shorten landfill disposal time and improve operation safety.
In order to achieve the above object, the present invention provides a safe landfill disposal and emergency system for hazardous waste, comprising:
the landfill is sequentially provided with a covering layer, a landfill area, a percolation layer, a stratum film and a waterproof lining layer from top to bottom;
a gas-liquid separation device disposed outside the landfill site, configured to receive the exhaust gas liquid and/or the generated gas squeezed out of the landfill site and perform a gas-liquid separation process;
a gas cleaning device in communication with the gas-liquid separation device configured to receive and process gas in the gas-liquid separation device; and
a percolate treatment device respectively communicated with the gas-liquid separation device and the percolation layer and configured to receive and treat percolate of the gas-liquid separation device and the percolation layer;
a compacting device disposed within the landfill, the compacting device configured to compact waste within the landfill and expel the extruded waste liquid;
the percolating layer is provided with a first filtering layer, a percolating mechanism and a second filtering layer in sequence from top to bottom, and the percolating mechanism is configured to discharge percolate.
Further, the compacting device comprises a compacting column, two mutually parallel lifting brackets and a conducting pipe, wherein the two lifting brackets are respectively and fixedly connected to two ends of the compacting column, and the lifting brackets are configured to drive the compacting column to horizontally move and vertically lift; the conductive pipe is in communication with the compaction column.
Further, the compaction column comprises a bearing shell filled with filter materials, a bearing tube is further arranged in the middle of the bearing shell, and a plurality of air inlet liquid openings are uniformly distributed on the bearing shell; the rotary bearing pipe is provided with a plurality of evenly distributed seepage openings.
Further, the bearing shell is made of steel, and is sprayed with an anti-corrosion material, and the anti-corrosion material is used for preventing the bearing shell from reacting with substances such as percolate and the like to generate secondary pollution.
Further, the anti-corrosion material is any one of silica gel and anti-corrosion polyethylene material.
Further, the impermeable lining may encase the entire landfill.
Further, the liquid seepage mechanism comprises two mutually parallel percolate collecting pipes and a plurality of percolate pipes connected between the two percolate collecting pipes; a liquid discharge pipe with a liquid discharge port is arranged on the percolate collecting pipe; the liquid seepage pipe is provided with a plurality of uniformly distributed percolation holes.
Further, the number of compaction devices is at least 1.
Compared with the prior art, the invention has the beneficial effects that: the solid waste landfill treatment is safer, the gas in the solid waste reaction period can be discharged, the compaction column can be used as a second percolate filtering system, the continuous compaction in the reaction process is performed, the reaction is accelerated, the landfill treatment time is shortened, the percolate leakage can be subjected to emergency treatment, the problem of pollution of the percolate extravasation to the underground water is avoided, and the operation safety is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram of a landfill according to the present invention.
FIG. 3 is a schematic view of the structure of the compaction column according to the present invention.
FIG. 4 is a schematic structural view of the liquid permeation mechanism of the present invention.
Fig. 5 is a schematic structural view of the bearing tube of the present invention.
Wherein: 1. landfill site, 2, gas-liquid separation device, 3, gas purification device, 4, leachate treatment device, 5, overburden, 6, landfill, 7, first filter layer, 8, seepage mechanism, 9, second filter layer, 10, stratum membrane, 11, waterproof lining layer, 12, compaction column, 13, lifting bracket, 14, conducting pipe, 121, bearing shell, 122, filter material, 123, bearing pipe, 124, inlet, 125, seepage port, 81, leachate collecting pipe, 82, seepage pipe, 83, drain pipe, 821, seepage hole, 831.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 5, the present invention provides a safe landfill disposal and emergency system for hazardous waste, comprising:
the landfill 1 is provided with a covering layer 5, a landfill area 6, a percolation layer, a stratum film 10 and a waterproof lining layer 11 from top to bottom in sequence; a compacting device is arranged in the landfill area 6 and is configured to compact waste in the landfill area 6 and discharge the extruded waste gas liquid; the percolating layer is provided with a first filtering layer 7, a percolating mechanism 8 and a second filtering layer 9 in sequence from top to bottom, and the percolating mechanism 8 is configured to discharge percolate;
a gas-liquid separation device 2 disposed outside the landfill site 1, configured to receive the exhaust gas liquid and/or the generated gas squeezed out of the landfill zone 6 and perform a gas-liquid separation process;
a gas cleaning device 3, which is in communication with the gas-liquid separation device 2, configured to receive the gas in the gas-liquid separation device 2 and perform a process; and
a percolate treatment device 4 which is respectively communicated with the gas-liquid separation device 2 and the percolated layer and is configured to receive and treat the percolate of the gas-liquid separation device 2 and the percolated layer;
preferably, the compacting device comprises a compacting column 12, two mutually parallel lifting brackets 13 and a conducting pipe 14, wherein the two lifting brackets 13 are respectively fixedly connected to two ends of the compacting column 12, and the lifting brackets 13 are configured to drive the compacting column 12 to horizontally move and vertically lift; a conductive pipe 14 communicates with the compaction column 12.
Alternatively, the lifting frame 13 is a conventional scissor lift mechanism.
Preferably, the compacting column 12 comprises a bearing shell 121 filled with filter materials 122, a bearing pipe 123 is further arranged in the middle of the bearing shell 121, and a plurality of air inlets 124 are uniformly distributed on the bearing shell 121; a plurality of evenly distributed seepage openings 125 are arranged on the rotary bearing pipe 123; the compaction column 12 can be used as a second percolate filtering system, continuously compacts waste in the reaction process, accelerates chemical reaction in the waste, shortens landfill treatment time, can also be used as a percolate emergency treatment device, if percolate is permeated into the ground due to improper paving of the watertight lining 11 or other uncontrollable factors, emergency measures can be timely taken, corresponding medicaments can be injected into the conducting tube 14, the medicaments pass through the rotary bearing tube 123 and then penetrate the filter material 122, and enter the landfill zone 6 through the air inlet 124 to perform timely emergency measures, so that the problem of pollution of the percolate to underground water due to external seepage is avoided, and the safety of operation is improved.
Preferably, the material of the bearing shell 121 is steel, and the corrosion-resistant material is sprayed, so that the corrosion-resistant material is used for preventing the bearing shell 121 from reacting with substances such as percolate and the like to generate secondary pollution.
Preferably, the anticorrosive material is any one of silica gel and anticorrosive polyethylene material.
Preferably, the impermeable backing layer 11 can encase the entire landfill zone 6.
Preferably, the infiltration mechanism comprises two infiltration liquid collecting pipes 81 which are parallel to each other, and a plurality of infiltration liquid pipes 82 connected between the two infiltration liquid collecting pipes 81; a drain pipe 83 with a drain port 831 is arranged on the percolate collecting pipe 81; the seepage pipe 82 is provided with a plurality of uniformly distributed seepage holes 821.
Preferably, the number of compacting means is at least 1.
Optionally, the filter material in the first filter layer 7, the second filter layer 9 and the filter material 122 in the compacted column 12 are each larger than the diameters of the respective permeate openings 125, 821.
More specifically, the procedure used in example 1 of the present invention is: firstly, excavating, paving a waterproof lining layer 11 at the bottom of the periphery of a landfill 1 after excavating, paving a stratum film 10, a second filter layer 9, a seepage mechanism 8 and a first filter layer 7 in sequence, paving solid waste landfill, compacting by adopting a compacting column 12 in the landfill process, compacting the compacting column 12 in a landfill area 6 after reaching the fixed load of the landfill, paving a covering layer 5, and paving the waterproof lining layer 11 for preventing rainwater from permeating.
After landfill, the solid waste in the landfill area 6 reacts with the passage of time, and the reaction degree is judged according to the generation amount of percolate in the percolate treatment device 4 and the gas-liquid content in the gas-liquid separation device 2. Wherein the percolate enters the percolate pipe 82 through the percolate hole 821, then enters the liquid discharge pipe 83 through the percolate collecting pipe 81, and finally enters the percolate treatment device 4 through the liquid discharge port 831; in the initial reaction, the reaction gas and a small amount of liquid permeate the filter material 122 through the gas-liquid inlet 124 on the compaction column 12, then enter the rotary support pipe 123 through the seepage port 125, enter the conduction pipe 14, and enter the gas-liquid separation device 2 through the conduction pipe 14. After reacting to a certain degree, the height of the compacting column 12 is adjusted by adjusting the lifting height of the lifting bracket 13, so that solid waste is compacted, and a large amount of gas and percolate are discharged. The gas separated by the gas-liquid separation device 2 enters the gas purifying device 3 from the gas-liquid separation device 2.
By continuing the reaction, compacting column 12 is already at the bottom of landfill 6, if seepage of percolate into the ground is caused by improper laying of impermeable lining 11 or other uncontrollable factors, emergency measures can be taken in time, corresponding medicaments can be injected into conducting tube 14, and the medicaments pass through rotary bearing tube 123 and then penetrate filter material 122, and enter landfill 6 through air inlet 124 for taking the emergency measures in time.
The present invention may be summarized in other specific forms without departing from the spirit or essential characteristics thereof. The above-described embodiments of the invention are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A safe landfill disposal and emergency system for hazardous waste, comprising:
the landfill (1) is provided with a covering layer (5), a landfill area (6), a percolation layer, a stratum film (10) and a waterproof lining layer (11) from top to bottom in sequence;
a gas-liquid separation device (2) disposed outside the landfill site (1) and configured to receive the exhaust gas liquid and/or the generated gas squeezed out of the landfill zone (6) and perform a gas-liquid separation process;
a gas cleaning device (3) in communication with the gas-liquid separation device (2) and configured to receive and process the gas in the gas-liquid separation device (2); and
a percolate treatment device (4) respectively communicated with the gas-liquid separation device (2) and the percolated layer and configured to receive and treat percolate of the gas-liquid separation device (2) and the percolated layer;
-the landfill zone (6) is provided with compacting means configured to compact the waste in the landfill zone (6) and to expel the extruded waste liquid;
the percolating layer is sequentially provided with a first filtering layer (7), a percolating mechanism (8) and a second filtering layer (9) from top to bottom, and the percolating mechanism (8) is configured to discharge percolate;
the compaction device comprises a compaction column (12), two mutually parallel lifting brackets (13) and a conducting pipe (14), wherein the two lifting brackets (13) are respectively and fixedly connected to two ends of the compaction column (12), and the lifting brackets (13) are configured to drive the compaction column (12) to horizontally move and vertically lift; -said conductive pipe (14) communicating with said compaction column (12);
the compaction column (12) comprises a bearing shell (121) filled with filter materials (122), a bearing pipe (123) is further arranged in the middle of the bearing shell (121), and a plurality of air inlet liquid openings (124) are uniformly distributed on the bearing shell (121); a plurality of evenly distributed seepage openings (125) are formed in the bearing pipe (123);
the seepage mechanism comprises two mutually parallel percolate collecting pipes (81) and a plurality of seepage pipes (82) connected between the two percolate collecting pipes (81); a liquid discharge pipe (83) with a liquid discharge port (831) is arranged on the percolate collecting pipe (81); a plurality of uniformly distributed percolation holes (821) are arranged on the percolation pipe (82).
2. The system for safe landfill disposal and emergency treatment of hazardous waste according to claim 1, characterized in that the material of the bearing shell (121) is steel, and anti-corrosion material is sprayed, and the anti-corrosion material is used for preventing the bearing shell (121) from reacting with percolate substances, thereby generating secondary pollution.
3. The hazardous waste safe landfill disposal and emergency system according to claim 2, wherein the anti-corrosive material is any one of silica gel and anti-corrosive polyethylene material.
4. Safety landfill disposal and emergency system for hazardous waste according to claim 1, characterized in that the impermeable lining (11) can wrap the whole landfill zone (6).
5. The hazardous waste safe landfill disposal and emergency system of claim 1, wherein the number of compaction devices is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330825.1A CN112404089B (en) | 2020-11-24 | 2020-11-24 | Safe landfill disposal and emergency system for hazardous waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330825.1A CN112404089B (en) | 2020-11-24 | 2020-11-24 | Safe landfill disposal and emergency system for hazardous waste |
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| Publication Number | Publication Date |
|---|---|
| CN112404089A CN112404089A (en) | 2021-02-26 |
| CN112404089B true CN112404089B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011330825.1A Active CN112404089B (en) | 2020-11-24 | 2020-11-24 | Safe landfill disposal and emergency system for hazardous waste |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2443276A1 (en) * | 2002-09-30 | 2004-03-30 | Waste Management, Inc. | Infiltration and gas recovery systems for landfill bioreactors |
| JP2007231562A (en) * | 2006-02-28 | 2007-09-13 | Shimizu Corp | Compacting machine |
| CN205296241U (en) * | 2015-11-25 | 2016-06-08 | 北京高能时代环境技术股份有限公司 | A seepage prevention structure for endangering dilatation after useless security landfill field closes |
| CN106592646A (en) * | 2016-12-05 | 2017-04-26 | 北京大学深圳研究生院 | Dynamic two-way guide and drainage control method for percolate and landfill gas |
| CN207521413U (en) * | 2017-11-13 | 2018-06-22 | 无锡市固废环保处置有限公司 | A kind of security landfill field of hazardous waste |
| CN109570181A (en) * | 2018-11-29 | 2019-04-05 | 焦钰 | A kind of Combined garbage Closure of landfill site system |
| CN111420962A (en) * | 2020-03-17 | 2020-07-17 | 河海大学 | Laboratory refuse landfill simulation experiment device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7347648B2 (en) * | 2005-03-31 | 2008-03-25 | Viridis Waste Control, Llc | Landfills and methods of operating a landfill |
| US7866921B2 (en) * | 2009-09-11 | 2011-01-11 | Stefan Stamoulis | Tool and method for extracting landfill gas |
-
2020
- 2020-11-24 CN CN202011330825.1A patent/CN112404089B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2443276A1 (en) * | 2002-09-30 | 2004-03-30 | Waste Management, Inc. | Infiltration and gas recovery systems for landfill bioreactors |
| JP2007231562A (en) * | 2006-02-28 | 2007-09-13 | Shimizu Corp | Compacting machine |
| CN205296241U (en) * | 2015-11-25 | 2016-06-08 | 北京高能时代环境技术股份有限公司 | A seepage prevention structure for endangering dilatation after useless security landfill field closes |
| CN106592646A (en) * | 2016-12-05 | 2017-04-26 | 北京大学深圳研究生院 | Dynamic two-way guide and drainage control method for percolate and landfill gas |
| CN207521413U (en) * | 2017-11-13 | 2018-06-22 | 无锡市固废环保处置有限公司 | A kind of security landfill field of hazardous waste |
| CN109570181A (en) * | 2018-11-29 | 2019-04-05 | 焦钰 | A kind of Combined garbage Closure of landfill site system |
| CN111420962A (en) * | 2020-03-17 | 2020-07-17 | 河海大学 | Laboratory refuse landfill simulation experiment device |
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| CN112404089A (en) | 2021-02-26 |
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