CN210586320U - Aeration and recharge combined system for landfill - Google Patents
Aeration and recharge combined system for landfill Download PDFInfo
- Publication number
- CN210586320U CN210586320U CN201920981401.8U CN201920981401U CN210586320U CN 210586320 U CN210586320 U CN 210586320U CN 201920981401 U CN201920981401 U CN 201920981401U CN 210586320 U CN210586320 U CN 210586320U
- Authority
- CN
- China
- Prior art keywords
- aeration
- pipeline
- recharge
- prefabricated
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to an aeration and recharge combined system for a landfill, which comprises a prefabricated aeration well, a prefabricated gas lifting well, an aeration pipeline, an aeration fan, a water suction pump and a water storage tank; the prefabricated aeration wells and the prefabricated gas extraction wells are distributed in the landfill site; the aeration pipeline is inserted in the prefabricated aeration well, and the top of the aeration pipeline is connected with an aeration fan through an air pipe; the upper part of the aeration pipeline is also provided with at least one recharge interface, the water outlet of the water pump is connected with the recharge interface of the aeration pipeline through a pipeline, and the water inlet of the water pump is connected with the water storage tank through a pipeline; the aeration pipeline adopts a telescopic sleeve type structure and comprises a plurality of aeration pipeline sections with different diameters; the aeration pipe sections are connected in pairs along the length direction to form aeration pipelines which are communicated up and down after being extended and the diameters of which are gradually reduced from top to bottom. The aeration and recharge combined system has the advantages of small volume, small occupied area, convenience in disassembly and transportation, and can realize regional and batch treatment of the landfill.
Description
Technical Field
The utility model belongs to the technical field of landfill handles, concretely relates to aeration recharge allies oneself with system towards landfill.
Background
At present, due to the fact that urbanization progresses rapidly, land resources are increasingly tense, and social attention is brought to potential pollution problems of domestic garbage landfill sites and irregular garbage landfill sites. The oxygen therapy aeration method can convert the existing anaerobic environment in the garbage stack body into an aerobic environment so as to accelerate the degradation rate of the garbage stack body. The physical and chemical properties of the household garbage after accelerated stabilization are relatively stable, the volume is greatly reduced, and the storage capacity of the landfill can be released and resource utilization can be carried out in a short period. However, the conventional oxygen therapy aeration process requires a system design and requires separate deployment of aeration pipelines and leachate collection/recharge pipelines. In addition, because the fan continuously injects air into the pile, the water loss speed of the garbage pile around the aeration pipe is far higher than that of other areas, if water is not supplemented in time, the stabilizing efficiency is greatly influenced, and meanwhile, the problems of long time consumption and large capital investment exist in the above design.
In the case of some old refuse landfills to be excavated which need aerobic remediation technology as pretreatment technology, such as saturated domestic refuse landfills or other domestic refuse landfills which need short-term land resource utilization, the conventional aerobic remediation technology is not necessarily suitable due to high cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an aeration recharge allies oneself with system towards landfill, it can be arranged in the good oxygen project of restoreing of subregion or batch landfill to solve the good oxygen condition of administering the in-process length consuming time of present landfill, the higher condition of input cost.
The technical scheme of the utility model as follows:
an aeration and recharge combined system for a landfill comprises a prefabricated aeration well, a prefabricated gas extraction well, an aeration pipeline, an aeration fan, a water suction pump and a water storage tank; the prefabricated aeration wells and the prefabricated gas extraction wells are distributed in a landfill site; the aeration pipeline is inserted into the prefabricated aeration well, and the top of the aeration pipeline is connected with an aeration fan through an air pipe; the upper part of the aeration pipeline is also provided with at least one recharge interface, the water outlet of the water pump is connected with the recharge interface of the aeration pipeline through a pipeline, and the water inlet of the water pump is connected with the water storage tank through a pipeline; the aeration pipeline adopts a telescopic sleeve type structure and comprises a plurality of aeration pipeline sections with different diameters; the aeration pipe sections are connected in pairs along the length direction to form aeration pipelines which are communicated up and down after being extended and the diameters of which are gradually reduced from top to bottom.
Preferably, the aeration pipe section is a cylindrical pipe or a tapered pipe with a reducing design.
Preferably, a notch is formed in the top of the aeration pipe section along the circumferential direction of the outer wall, and a circle of gasket made of flexible materials and protruding out of the surface of the inner wall of the aeration pipe section is sleeved in the notch; the bottom of the aeration pipe section is provided with a circle of clamping grooves along the circumferential direction of the inner wall; the adjacent aeration pipe sections are prevented from being separated by the matching use of the gasket and the clamping groove.
Preferably, a circle of continuous or discontinuously arranged clamping jaws made of rigid materials are arranged at the top of the aeration pipe section along the circumferential direction of the outer wall; the bottom of the aeration pipe section is provided with a circle of clamping grooves along the circumferential direction of the inner wall; the clamping jaw is matched with the clamping groove to prevent adjacent aeration pipe sections from being separated.
Preferably, the top of the aeration pipeline is also provided with a stabilizing mechanism for fixing the aeration pipeline on the ground to prevent the aeration pipeline from sinking; the stabilizing mechanism is of a triangular structure or a circular truncated cone structure which is circumferentially distributed along the outer wall of the uppermost aeration pipe section.
Preferably, the bottom of the aeration pipeline is designed into a perforated pipe, and the hole density at the bottom of the perforated pipe is smaller than that at the top of the perforated pipe.
Preferably, a water spray gun is arranged at one end of the recharge pipeline extending into the aeration pipeline.
Preferably, the length of the aeration pipe section is 40-50 cm; the maximum diameter of the aeration pipe section is determined according to the actual gas demand, and the minimum diameter is not less than 20 cm.
Preferably, the depth of the prefabricated aeration well is 10-15 m, the depth of the prefabricated gas extraction well is 2-3 m, and the distance between the adjacent prefabricated aeration wells and the adjacent prefabricated gas extraction wells is 5-15 m.
Preferably, the combined aeration and recharge system further comprises a gas lifting pipeline and an induced draft fan; the gas lifting pipeline is inserted into the prefabricated gas lifting well, and the top of the gas lifting pipeline is connected with the induced draft fan through a pipeline.
Preferably, the combined aeration and recharge system further comprises a container for accommodating each part in the combined aeration and recharge system.
Has the advantages that:
the aeration and recharge combined system has the advantages of small volume, small occupied area, convenience in disassembly and transportation, and can realize regional and batch treatment of the landfill.
After the aeration and recharge combined system operates, the garbage heap can be converted from an anaerobic environment to an aerobic environment in a short period, so that landfill gas is not generated any more; and water can be timely supplemented to the aeration area through recharging, so that the stability of the treatment process is improved.
The aeration and recharge combined system allows a user to complete aeration work in a region in a short time, and can realize simultaneous construction and treatment when carrying out aerobic remediation treatment on a large-scale landfill, thereby shortening the treatment period.
Drawings
FIG. 1 is a schematic view of a system configuration of a combined aeration-recharge system;
FIG. 2 is a schematic view of the structure of an aeration pipe section and an enlarged schematic view of the joint of adjacent aeration pipe sections;
FIG. 3 is a schematic structural view of another aeration pipe section and an enlarged schematic view of the joint of adjacent aeration pipe sections;
in FIG. 4, (a) is a schematic top view of the aeration pipeline, and (b) is a schematic structural view of the topmost aeration pipeline section;
FIG. 5 is a schematic cross-sectional view of the fully deployed aeration conduit;
FIG. 6 is a schematic view of the recovery of the aeration and recharge combined system;
illustration of the drawings: 1. prefabricating an aeration well; 2. prefabricating a gas extraction well; 3. 31 parts of an aeration pipeline, 32 parts of an aeration pipe section, 32 parts of a flange connector, 33 parts of a recharging connector, 34 parts of a notch, 35 parts of a clamping groove, 36 parts of a gasket, 37 parts of a clamping jaw, 38 parts of a flower pipe and 39 parts of a stabilizing mechanism; 4. recharge pipeline, 41. water spray gun; 5. an aeration fan; 6. a water pump; 7. a water storage tank; 8. an aeration air pipe; 9. a PLC electric control system; 10. a partition plate; 11. tubing and fittings; 12. a container.
Detailed Description
For purposes of example, and to facilitate an understanding of the patent, reference will now be made to the following more complete and detailed description taken in conjunction with the accompanying drawings.
The embodiment discloses an aeration and recharge combined system which mainly comprises a prefabricated aeration well 1, a prefabricated gas extraction well 2, an aeration pipeline 3, a recharge pipeline 4, an aeration fan 5, a water suction pump 6 and a water storage tank 7, wherein the prefabrication refers to the prefabrication of digging according to the working condition of a landfill site.
The depth of the prefabricated aeration well 1 is about 10-15 m, the depth of a pile body which can be repaired according to needs is determined, and the prefabricated gas extraction well 2 is at least driven into the garbage pile body to be 2-3 m deep so as to improve the gas extraction efficiency. Considering the cost and the aeration efficiency, the interval between the prefabricated aeration well 1 and the prefabricated gas extraction well 2 is 5-15 m, and the prefabricated aeration well and the prefabricated gas extraction well can be designed to be in a checkerboard layout.
The aeration conduit 3 is of a telescopic design, for example, a telescopic structure. The aeration pipeline 3 is provided with a plurality of sections (usually 3-4 sections) of aeration pipe sections 31 which are connected in sequence and run through up and down, each aeration pipe section 31 forms an aeration unit, and each section of aeration pipe section 31 is about 40-50 cm long and gradually reduces in diameter. The aeration pipe section 31 can be a conical pipe, namely, a reducing design is adopted, and can also be a cylindrical pipe. The maximum diameter of each aeration pipe section 31 can be determined according to the actual required gas amount, but the minimum diameter should not be less than 20 cm. The aeration pipe 3 may be made of cement, PE, stainless steel or other corrosion resistant material.
When the aeration pipe section 31 is a tapered pipe, the notch 34 of the aeration pipe section should be sleeved with a gasket 36 made of flexible material, such as rubber, polytetrafluoroethylene, etc. When in use, the clamping groove 35 is a safety measure and aims to prevent the pipeline with small aperture from sliding out of the pipeline main body. When the aeration pipe section 31 is a cylindrical pipe, the outer wall of the top of the aeration pipe section can be provided with a ring of claws 37 made of rigid material by welding or the like, for example, iron, cement or the like, HDPE or the like can be used. When the pipeline anti-slipping clamp is used, the clamping claws 37 in the pipeline are butted with the clamping grooves 35, so that the pipeline is prevented from slipping. When the pipeline is installed, drilling a well on a field by using rotary drilling equipment, after the construction of the aeration well is finished, extending the pipeline on the ground (the pipeline can be straightened by using a small vehicle matched with a claw hook), and then connecting the aeration device into an aeration well by using a crane; the pipeline can be lifted by a crane directly and is directly connected into an aeration well, the pipeline can automatically extend due to self gravity, and finally, the pipeline and the ground are tamped by piling equipment to realize pipeline installation.
The topmost aeration pipe section 31 (i.e. the aeration pipe section with the largest diameter) is also provided with a stabilizing mechanism 39, which can be uniformly distributed around the pipeline in a triangular shape or sleeved around the pipeline in a circular truncated cone shape, so as to fix the pipeline with the ground and prevent the pipeline from sinking.
The top of the topmost aeration pipe section 31 has a flange connection 32 for connection to the aeration air pipe 8. Meanwhile, the aeration pipeline 3 is provided with a recharging design, and the topmost aeration pipe section 31 is also provided with four recharging connectors 33 which are circumferentially distributed and used for connecting the recharging pipeline 4.
When the aeration is finished, the bottom of the aeration pipeline 3 can be hung by a crane with a hook claw, and then the aeration pipeline 3 is lifted, so that the recovery of the aeration pipeline 3 is realized. And the lower part of the bottommost aeration pipe section 31 is provided with a section of perforated pipe 38 (i.e. a perforated pipe), and the length of the perforated pipe 38 is about 50-100 cm. Because of different depths, the liquid resistance is different during recharging, and in order to ensure that the recharging liquid is uniformly distributed as much as possible, the density of the holes at the bottom of the flower tube is smaller than that at the top of the flower tube.
One end of the aeration pipeline 3 extends into the prefabricated aeration well 1, and the other end is exposed on the ground and is connected with the aeration fan 5 through a flange connector 32 and an aeration air pipe 8. One end of the recharge pipeline 4 is connected with the water pump 6, and the other end thereof extends into the recharge interface 33 of the aeration pipeline 3. And a water spraying gun head 41 is arranged at the end part extending into the recharging port 33, and the water spraying mode can be columnar, atomized or in other forms. The other end of the water pump 6 is connected with the water storage tank 7 through a water pumping pipe. Wherein, the water storage tank 7 can be a leachate storage tank, a water storage tank or other water storage equipment, and the recharge liquid can be leachate stock solution, domestic sewage, tap water or other water sources without/or with slight bacteriostatic action.
In another embodiment, on the basis of the above, a gas extraction pipeline is further arranged in the prefabricated gas extraction well 2, and is used for preventing the prefabricated gas extraction well 2 from deforming, breaking and the like in the actual application process. Furthermore, the gas extraction pipeline can be connected with a draught fan through an air pipe so as to accelerate the gas extraction efficiency. In order to be conveniently folded and unfolded, the gas lifting pipeline can also adopt a telescopic design similar to that of the aeration pipeline, and the details are not repeated.
Based on the aeration and recharge combined system, the aeration and recharge combined system can be applied to the reduction engineering of the domestic garbage landfill, the pretreatment engineering of the aged garbage excavation or the aerobic restoration engineering of the domestic garbage landfill, and the specific working mode is as follows:
before the landfill site is repaired, gas extraction wells and gas exposure wells, namely a prefabricated gas extraction well 2 and a prefabricated gas exposure well 1, are constructed in the landfill site in advance.
After the prefabricated aeration well 1 is laid, the telescopic aeration pipeline 3 is unfolded and inserted into the prefabricated aeration well 1, and the top end of the telescopic aeration pipeline is connected with a fan 12 through an aeration air pipe 8 and used for executing aeration operation. The aeration operation can be controlled manually or by a PLC (programmable logic controller) electric control system 9. The manual control aeration scheme can be that an aeration pump is manually switched on and off, the aeration time is 1-5 h, and the aeration pump is switched on and off 1-10 times every day, and the specific control scheme is based on the property of the garbage pile and the aerobic restoration scheme; the PLC electric control scheme is that oxygen and methane probes are embedded around the aeration well and the gas extraction well, if the oxygen content in the pile is less than 8%, the fan starts aeration, and if the oxygen content in the pile is higher than 15%, the aeration stops.
The water outlet end of the water pump 6 is connected with the recharge pipeline 4The other end of the recharge pipe 4 is inserted into the recharge port 33 of the aeration pipe 3. The recharging liquid may be leachate or other liquid. Meanwhile, the recharging operation can also be controlled manually or by the PLC electric control system 9. The manual control recharge scheme can be that a water pump is manually switched on and off for 1-2 times every day, the recharge load is positively correlated with the water content of the pile body, and the recommended daily recharge load is 15.6L/m3(ii) a The PLC electric control scheme is that humidity probes are embedded around the aeration well and the gas extraction well, if the water content in the pile is less than 40%, a water pump starts to work, and if the water content in the pile is higher than 60%, recharging is stopped.
When the aeration fan 5 or the suction pump 6 is simultaneously turned on, the recharge liquid is better diffused by the wind pressure of the aeration fan 5 driven into the stack.
When the landfill is stable, the aerated conduit can be recovered to the container 12 using a crane or other towing equipment. For example, after the whole work is completed, the whole aeration pipe can be lifted up by hooking the bottommost aeration pipe section (i.e. the aeration pipe section with the smallest diameter) by a crane, and finally recovered into the container 12. Furthermore, most of the components in the aeration and recharge combined system can be stored by the container 12 and transported to a landfill site needing aerobic remediation.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution of the present invention and the inventive concept equally within the technical scope of the present invention.
Claims (10)
1. An aeration and recharge combined system for a landfill site is characterized by comprising a prefabricated aeration well, a prefabricated gas extraction well, an aeration pipeline, a recharge pipeline, an aeration fan, a water suction pump and a water storage tank; the prefabricated aeration wells and the prefabricated gas extraction wells are distributed in a landfill site; the aeration pipeline is inserted into the prefabricated aeration well, and the top of the aeration pipeline is connected with an aeration fan through an air pipe; the upper part of the aeration pipeline is also provided with at least one recharge interface, the water outlet of the water pump is connected with the recharge interface of the aeration pipeline through the recharge pipeline, and the water inlet of the water pump is connected with the water storage tank through a pipeline; the aeration pipeline adopts a telescopic sleeve type structure and comprises a plurality of aeration pipeline sections with different diameters; the aeration pipe sections are connected in pairs along the length direction to form aeration pipelines which are communicated up and down after being extended and the diameters of which are gradually reduced from top to bottom.
2. The combined aeration-recharge system according to claim 1, wherein the aeration pipe section is a cylindrical pipe or a tapered pipe with a variable diameter design.
3. The combined aeration-recharge system according to claim 1, wherein a notch is formed in the top of the aeration pipe section along the circumferential direction of the outer wall, and a ring of gasket made of flexible material and protruding out of the inner wall surface of the aeration pipe section is sleeved in the notch; the bottom of the aeration pipe section is provided with a circle of clamping grooves along the circumferential direction of the inner wall; the adjacent aeration pipe sections are prevented from being separated by the matching use of the gasket and the clamping groove.
4. The combined aeration-recharge system according to claim 1, wherein a circle of continuous or discontinuous claws made of rigid material is arranged at the top of the aeration pipe section along the circumferential direction of the outer wall; the bottom of the aeration pipe section is provided with a circle of clamping grooves along the circumferential direction of the inner wall; the clamping jaw is matched with the clamping groove to prevent adjacent aeration pipe sections from being separated.
5. The combined aeration-recharge system according to claim 1, wherein a stabilizing mechanism for fixing the aeration pipe to the ground to prevent the aeration pipe from sinking is further provided on the top of the aeration pipe; the stabilizing mechanism is of a triangular structure or a circular truncated cone structure which is circumferentially distributed along the outer wall of the uppermost aeration pipe section.
6. The combined aeration-recharge system according to claim 1, wherein the bottom of the aeration pipe is designed as a floral tube, and the density of holes at the bottom of the floral tube is smaller than that at the top of the floral tube.
7. The combination aeration-recharge system of claim 1, wherein a water lance is provided at the end of the recharge conduit that extends into the aeration conduit.
8. The combined aeration-recharge system according to claim 1, wherein the length of the aeration pipe section is 40-50 cm; the maximum diameter of the aeration pipe section is determined according to the actual gas demand, and the minimum diameter is not less than 20 cm; the prefabricated aeration well depth is 10-15 m, the prefabricated gas extraction well depth is 2-3 m, and the interval between every two adjacent prefabricated aeration wells and the interval between every two adjacent prefabricated gas extraction wells are 5-15 m.
9. The combined aeration and recharge system of claim 1, further comprising a gas stripping pipe and an induced draft fan; the gas lifting pipeline is inserted into the prefabricated gas lifting well, and the top of the gas lifting pipeline is connected with the induced draft fan through a pipeline.
10. A combined aeration and recharge system according to any one of claims 1 to 9, further comprising a container for housing the components of the combined aeration and recharge system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981401.8U CN210586320U (en) | 2019-06-27 | 2019-06-27 | Aeration and recharge combined system for landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981401.8U CN210586320U (en) | 2019-06-27 | 2019-06-27 | Aeration and recharge combined system for landfill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210586320U true CN210586320U (en) | 2020-05-22 |
Family
ID=70682891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920981401.8U Active CN210586320U (en) | 2019-06-27 | 2019-06-27 | Aeration and recharge combined system for landfill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210586320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744906A (en) * | 2021-01-05 | 2021-05-04 | 株洲时代新材料科技股份有限公司 | Aeration device and aerobic ecological moving bed |
-
2019
- 2019-06-27 CN CN201920981401.8U patent/CN210586320U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744906A (en) * | 2021-01-05 | 2021-05-04 | 株洲时代新材料科技股份有限公司 | Aeration device and aerobic ecological moving bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591859C (en) | Pile pulling construction method for pile pulling machine | |
| CN112875881B (en) | Aeration device for repairing VOCs pollution | |
| CN210586320U (en) | Aeration and recharge combined system for landfill | |
| CN206325942U (en) | A kind of contaminated soil and groundwater remediation device | |
| CN201074340Y (en) | Pile-drawing machine | |
| CN102808413B (en) | Reinforcement-replacing sectional-grouting pipe with inner piston and construction method thereof | |
| CN206429211U (en) | Heavy caliber tunneling boring hole drilling deslagging system | |
| CN201891113U (en) | Device for sinking hollow shell pile through high-pressure water jetting | |
| CN203346180U (en) | Micropore-variable blockage-preventing aerating hose | |
| CN210737544U (en) | Pile cleaning device | |
| CN205253719U (en) | Be used for prosthetic medicament of soil groundwater normal position injection advancing device | |
| CN111924970A (en) | Landfill leachate recharging device and recharging method | |
| CN209468436U (en) | A kind of rubbish rotary kiln degradation soiling solution floods oxygen purification combination unit | |
| CN203603159U (en) | Underground water recyclable comprehensive utilization system | |
| CN207567845U (en) | A kind of air type suction dredge for subway underwater excavation | |
| CN202659139U (en) | Pneumatic stirring and drilling device | |
| CN211007012U (en) | Ultrasonic dredging vehicle | |
| CN216890262U (en) | Well casing combined reaction type underground water circulating well | |
| CN212926087U (en) | Sand nature soil slip casting reinforcing apparatus | |
| CN210917690U (en) | Sewage lifting device convenient to remove | |
| CN216714346U (en) | Drilling water pumping test orifice device | |
| CN203891762U (en) | Screw lifting system for slurry in drilled hole | |
| CN217351132U (en) | Integral steel septic tank that can have enough to meet need | |
| JPS6115079Y2 (en) | ||
| CN213144378U (en) | Tubular well pore-forming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |