CN102896131A - Pre-buried elevating landfill gas collecting well - Google Patents
Pre-buried elevating landfill gas collecting well Download PDFInfo
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- CN102896131A CN102896131A CN2012103355336A CN201210335533A CN102896131A CN 102896131 A CN102896131 A CN 102896131A CN 2012103355336 A CN2012103355336 A CN 2012103355336A CN 201210335533 A CN201210335533 A CN 201210335533A CN 102896131 A CN102896131 A CN 102896131A
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- gas collecting
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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
- 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 a landfill gas collecting well which is used for collection of garbage landfill gas. A pre-buried elevating landfill gas collecting well provided by the invention comprises a gas collection pipe and an exhaust pipe, wherein the exhaust pipe is installed at the upper part of the gas collection pipe and is used for connecting a branch exhaust pipe to realize gas collection, a well mouth valve is arranged on the exhaust pipe and is used for controlling negative pressure and collection flow of the landfill gas collecting well, the gas collection pipe is composed of an outer gas collection pipe and an inner gas collection floral pipe, the outer gas collection pipe is composed of an outer gas collection solid pipe at an upper part and an outer gas collection floral pipe at a lower part, and the inner gas collection floral pipe is arranged in the outer gas collection pipe. According to the invention, the pre-buried elevating landfill gas collecting well has a simple structure and reasonable design, the characteristics of a simple process, convenient construction, a fast well forming speed, a mature construction process, strong environmental adaptability and a good gas collection effect are obtained, and low cost and economic benefits are achieved.
Description
Technical field
The present invention relates to a kind of landfill-gas collecting well, particularly relate to a kind of built-in type lift landfill-gas collecting well, be used for rubbish landfill gas and collect.
Background technology
Refuse landfill gas refers in the garbage loading embeading process, piled up or the domestic waste of landfill in the gas that generated through microbiological anaerobic digestion, degraded of contained large amount of organic.Rubbish landfill gas is a kind of mist, and its generation and release are by conditional decisions such as the water regime in the component of rubbish, soot, rubbish temperature, pH value, meteorological condition, rubbish age, soot structure and environmental geologies.
Rubbish landfill gas has multiple release approach generally speaking: on the one hand can be by the landfill yard surface to the unordered diffusion of atmosphere; On the other hand, landfill gas can be by the geological structure in the underground ground,, landfill gas is moved to from the place of landfill yard away from then discharge into atmosphere to the transverse horizontal diffusion mobility of landfill yard surrounding area such as crack etc.So how to effectively utilize the collection landfill gas, concern using energy source and environmental protection, be a problem that economic worth and social effect are arranged very much.
Most garbage power project all is to utilize vertical shaft to collect landfill gas basically, but vertical shaft has a drawback, after this layer rubbish is filled out the formulation height, rubbish need continue up to increase, at present existing gas collection well just faces and the phenomenon such as is buried, be removed, so not only cause the waste of human, financial, and material resources, and have a short time and get the landfill gas collection and blank time occurs, a large amount of landfill gas is directly dissipated in the air.Therefore how guaranteeing to keep our original vertical shaft when the follow-up rubbish scope of operation is increased, is vital.
Summary of the invention
The present invention is directed to the prior art deficiency, overcome a present technique difficult problem, a kind of mode of landfill-gas collecting well is provided.When the follow-up rubbish scope of operation is increased, can keep our original vertical shaft, reduce the waste of human, financial, and material resources.It is simple in structure, easy construction, cost are low, good in economic efficiency.
The technical solution adopted in the present invention:
A kind of pre-buried lift landfill-gas collecting well, comprise the gas collecting pipe, exhaust tube, described exhaust tube is installed in gas collecting pipe top, be used for connecting suction branch and carry out gas collecting, exhaust tube is provided with head valve, head valve is used for control and collects the negative pressure of well and gather flow, it is characterized in that: described gas collecting pipe is comprised of gas collecting outer tube and the inner floral tube of gas collecting, described gas collecting outer tube is comprised of the outside floral tube of gas collecting of the outside real pipe of the gas collecting on top and bottom, and the inner floral tube of described gas collecting is arranged in the described gas collecting outer tube.
Described pre-buried lift landfill-gas collecting well, contain the High Pressure Drain pipe, high-pressure pipe, described High Pressure Drain pipe, high-pressure pipe promote well head and enter and stretch into the inner floral tube of gas collecting bottom from gas collecting pipe top, described high-pressure pipe places High Pressure Drain pipe bottom, to utilize the percolate in the air pressure discharge gas collection well.
Described pre-buried lift landfill-gas collecting well, the inner floral tube of described gas collecting upper end is provided with the lifting flange head, in the outside floral tube of described gas collecting lower end, apart from bottom 20-30cm place 3-6 piece of elevator bolt is installed, bolt length is advisable apart from the inner floral tube outer wall of gas collecting 2-3cm with its end.
Described pre-buried lift landfill-gas collecting well, the outside real pipe of described gas collecting, the outside floral tube of gas collecting and the inner floral tube of gas collecting are selected HDPE tubing, the outside real pipe of gas collecting is than about 2 meters of landfill heap height, less than 3 meters, the inner floral tube length of gas collecting is suitable with the junk-heap body height than landfill height for the outside floral tube of gas collecting.
Described pre-buried lift landfill-gas collecting well, the outside real length of tube of gas collecting is 3-4 rice, remaining part is outside floral tube, the lifting when selecting HDPE tubing mainly to be convenient to follow-up junk-heap body rising.
Described pre-buried lift landfill-gas collecting well, the outside floral tube of gas collecting and the inner floral tube of the gas collecting upper and lower every interval 5-10cm in surface are manufactured with Φ 20-26mm flower hole, and 6～10 rows punch on the every HDPE tubing.
Beneficial effect of the present invention:
1, the pre-buried lift landfill-gas collecting well of the present invention is simple in structure, reasonable in design, has that technique is simple, an easy construction, Completed advance rate is fast, construction technology is ripe, environmental suitability is strong, gas collection is effective characteristics, and cost is low, good in economic efficiency.Its advantage be make things convenient for percolate to discharge, the maintenance expense is low, reduce rubbish landfill gas dissipation, collect well arranges maneuverability.
2, the pre-buried lift landfill-gas collecting well of the present invention, be specially adapted to successively landfill of rubbish, the first floor is more than 10 meters, the successively raising of follow-up rubbish, the vertical external pipe of gas collecting then can progressively promote according to the rubbish height, when not affecting landfill operation, reduce the time of beating vertical shaft, increase rate of air sucked in required.When the follow-up rubbish scope of operation is increased, can keep original vertical shaft, reduce the waste of human, financial, and material resources.
Description of drawings
Fig. 1: the sectional structure schematic diagram of the pre-buried lift landfill-gas collecting well of the present invention.
The specific embodiment
Embodiment one: referring to Fig. 1, the pre-buried lift landfill-gas collecting well of the present invention, comprise the gas collecting pipe, exhaust tube, described exhaust tube 3 is installed in gas collecting pipe top, be used for connecting suction branch and carry out gas collecting, exhaust tube is provided with head valve 4, head valve is used for control and collects the negative pressure of well and gather flow, described gas collecting pipe is comprised of gas collecting outer tube 8 and the inner floral tube 7 of gas collecting, described gas collecting outer tube 8 is comprised of the outside floral tube of gas collecting of the outside real pipe of the gas collecting on top and bottom, and the inner floral tube 7 of described gas collecting is arranged in the described gas collecting outer tube.
Embodiment two: referring to Fig. 1, the pre-buried lift landfill-gas collecting well of present embodiment, different from embodiment one is: contain High Pressure Drain pipe 1, high-pressure pipe 2, described High Pressure Drain pipe 1, high-pressure pipe 2 promote the bottom that well head 5 entered and stretched into the inner floral tube 7 of gas collecting from gas collecting pipe top, described high-pressure pipe 2 places the bottom of High Pressure Drain pipe 1, to utilize the percolate in the air pressure discharge gas collection well.
Embodiment three: referring to Fig. 1, the pre-buried lift landfill-gas collecting well of present embodiment, different from embodiment one or embodiment two is: be provided with in the inner floral tube of described gas collecting 7 upper ends and promote flange head 6, in the outside floral tube of described gas collecting lower end, apart from bottom 20-30cm place 3-6 piece of elevator bolt 9 is installed, the length of described elevator bolt 9 is advisable apart from the inner floral tube outer wall of gas collecting 2-3cm with its end.
Embodiment four: the pre-buried lift landfill-gas collecting well of present embodiment, different from aforementioned each embodiment is: the outside real pipe of described gas collecting, the outside floral tube of gas collecting and the inner floral tube of gas collecting are selected HDPE tubing, the outside real pipe of gas collecting is than about 2 meters of landfill heap height, less than 3 meters, the inner floral tube length of gas collecting is suitable with the junk-heap body height than landfill height for the outside floral tube of gas collecting.
Described pre-buried lift landfill-gas collecting well, the outside real length of tube of gas collecting is 3-4 rice, remaining part is outside floral tube, the lifting when selecting HDPE tubing mainly to be convenient to follow-up junk-heap body rising.
Described pre-buried lift landfill-gas collecting well, the outside floral tube of gas collecting and the inner floral tube of the gas collecting upper and lower every interval 5-10cm in surface are manufactured with Φ 20-26mm flower hole, and 6～10 rows punch on the every HDPE tubing.
Built-in type vertical lifting formula landfill-gas collecting well of the present invention, its use procedure is:
(1) in the part refuse landfill, the landfill height is higher first, and is about more than 10 meters, and we make a collection of vertical shaft in this zone, but very fast landfill yard will carry out the secondary landfill in this zone, even three landfills, increase 4-5 rice at every turn, the vertical shaft of originally doing not only can not well come into operation, and face at any time and buried, the possibility that is removed, in order better to utilize these vertical shafts, we have invented built-in type vertical lifting formula landfill-gas collecting well.(2) when junk-heap body is filled out first ten meters, we are just the pre-buried vertical lifting formula landfill-gas collecting well of making, in the side slope placement in landfill zone, when rubbish heap was filled to herein, we and refuse landfill consulted to avoid the tube head part along just, separate landfill along the tube head both sides, after filling and presenting V-type, treat that rubbish encases pre-buried vertical lifting formula landfill-gas collecting well gradually, can normally carry out landfill operation, after this mouthful well ferments normally, can come into operation.When (3) treating that second layer rubbish is filled to herein, we remove trunk line and suction branch, with the DN250 pump-line of the outside landfill height according to rubbish, up promote, remain outside gas production floral tube apart from the earth's surface 3 meters get final product.(4) garbage loading embeading can be constructed in the manner described above to this moment, after outside pump-line promotes, only needed internal high pressure drainpipe and high-pressure pipe are prolonged, and reconnected to trunk line to get final product.
The manufacturing process of pre-buried lift landfill-gas collecting well: the real pipe that (1) outside pump-line welding is more about 2 meters than landfill heap height gets final product than the floral tube of landfill height less than 3 meters.(2) the internal air exhausting pipeline all is welded as floral tube, and its length equates to get final product with the junk-heap body height.Internal air exhausting pipeline top welding DN200 flange head as the lifting flange head of internal air exhausting pipeline, promotes outside DN250 pipeline and gets final product during lifting.(3) outside pump-line is installed 3～6 pieces of elevator bolts apart from bottom 20-30CM place bottom, and bolt selects diameter 22-24mm to get final product, and bolt length gets final product from internal pipeline 2-3cm.
Claims (8)
1. pre-buried lift landfill-gas collecting well, comprise the gas collecting pipe, exhaust tube, described exhaust tube is installed in gas collecting pipe top, be used for connecting suction branch and carry out gas collecting, exhaust tube is provided with head valve, head valve is used for control and collects the negative pressure of well and gather flow, it is characterized in that: described gas collecting pipe is comprised of gas collecting outer tube and the inner floral tube of gas collecting, described gas collecting outer tube is comprised of the outside floral tube of gas collecting of the outside real pipe of the gas collecting on top and bottom, and the inner floral tube of described gas collecting is arranged in the described gas collecting outer tube.
2. pre-buried lift landfill-gas collecting well according to claim 1, it is characterized in that: contain the High Pressure Drain pipe, high-pressure pipe, described High Pressure Drain pipe, high-pressure pipe promote well head and enter and stretch into the inner floral tube of gas collecting bottom from gas collecting pipe top, described high-pressure pipe places High Pressure Drain pipe bottom, to utilize the percolate in the air pressure discharge gas collection well.
3. pre-buried lift landfill-gas collecting well according to claim 1 and 2, it is characterized in that: the inner floral tube of described gas collecting upper end is provided with the lifting flange head, in the outside floral tube of described gas collecting lower end, apart from bottom 20-30cm place 3-6 piece of elevator bolt is installed, bolt length is advisable apart from the inner floral tube outer wall of gas collecting 2-3cm with its end.
4. pre-buried lift landfill-gas collecting well according to claim 3, it is characterized in that: the outside real pipe of described gas collecting, the outside floral tube of gas collecting and the inner floral tube of gas collecting are selected HDPE tubing, the outside real pipe of gas collecting is than about 2 meters of landfill heap height, less than 3 meters, the inner floral tube length of gas collecting is suitable with the junk-heap body height than landfill height for the outside floral tube of gas collecting.
5. pre-buried lift landfill-gas collecting well according to claim 4 is characterized in that: the outside real length of tube of gas collecting is 3-4 rice, and remaining part is outside floral tube, the lifting when selecting HDPE tubing mainly to be convenient to follow-up junk-heap body to raise.
6. pre-buried lift landfill-gas collecting well according to claim 1 and 2, it is characterized in that: the outside real pipe of described gas collecting, the outside floral tube of gas collecting and the inner floral tube of gas collecting are selected HDPE tubing, the outside real pipe of gas collecting is than about 2 meters of landfill heap height, less than 3 meters, the inner floral tube length of gas collecting is suitable with the junk-heap body height than landfill height for the outside floral tube of gas collecting.
7. pre-buried lift landfill-gas collecting well according to claim 6 is characterized in that: the outside real length of tube of gas collecting is 3-4 rice, and remaining part is outside floral tube, the lifting when selecting HDPE tubing mainly to be convenient to follow-up junk-heap body to raise.
8. according to claim 1,2,4,5 or 7 described pre-buried lift landfill-gas collecting wells, it is characterized in that: the outside floral tube of gas collecting and the inner floral tube of the gas collecting upper and lower every interval 5-10cm in surface, be manufactured with Φ 20-26mm flower hole, 6～10 rows punch on the every HDPE tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012103355336A CN102896131A (en) | 2012-09-12 | 2012-09-12 | Pre-buried elevating landfill gas collecting well |
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| CN2012103355336A CN102896131A (en) | 2012-09-12 | 2012-09-12 | Pre-buried elevating landfill gas collecting well |
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| CN104995372A (en) * | 2013-01-02 | 2015-10-21 | Q.E.D.环境系统公司 | Devices and methods for landfill gas well monitoring and control |
| US10029291B2 (en) | 2013-01-02 | 2018-07-24 | Q.E.D. Environmental Systems, Inc. | Devices and methods for landfill gas well monitoring and control |
| US10662941B2 (en) | 2017-01-18 | 2020-05-26 | Q.E.D. Environmental Systems, Inc. | Modular pneumatic well pump system |
| CN113522922A (en) * | 2021-07-12 | 2021-10-22 | 中兰环保科技股份有限公司 | Device and method for collecting gas in garbage pile body of storage garbage landfill |
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| JP2008274688A (en) * | 2007-05-02 | 2008-11-13 | Asahi Kasei Construction Materials Co Ltd | Buried device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104995372A (en) * | 2013-01-02 | 2015-10-21 | Q.E.D.环境系统公司 | Devices and methods for landfill gas well monitoring and control |
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Application publication date: 20130130 |