CN102235028A - Leachate guide and discharge device for garbage landfill gas collecting well - Google Patents
Leachate guide and discharge device for garbage landfill gas collecting well Download PDFInfo
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- CN102235028A CN102235028A CN2010101541321A CN201010154132A CN102235028A CN 102235028 A CN102235028 A CN 102235028A CN 2010101541321 A CN2010101541321 A CN 2010101541321A CN 201010154132 A CN201010154132 A CN 201010154132A CN 102235028 A CN102235028 A CN 102235028A
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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
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Abstract
The invention provides a leachate guide and discharge device for a garbage landfill gas collecting well. The leachate guide and discharge device comprises a water collecting pipe, a compressed air pipe, an exhaust pipe, a drainage pipe and a guide and discharge mechanism, wherein the water collecting pipe is provided with a top plate and a bottom plate, the roughly central position of the top plate is provided with a hole, and the roughly central position of the bottom plate is provided with a hole provided with a check valve; the compressed air pipe is connected with an air inlet valve passing through the top plate; the exhaust pipe is connected with an exhaust valve passing through the top plate; the drainage pipe passes through the interior of the water collecting pipe through the hole of the top plate; and the guide and discharge mechanism is positioned in the water collecting pipe and used for controlling the check valve according to the height of the water level in the water collecting pipe to open or close the hole in the bottom plate and open or close the air inlet valve and the exhaust valve. Through the leachate guide and discharge device, the leachate of a landfill is guided and discharged in a mechanical mode by using the buoyancy of water, so that the collection of the landfill gas and the guide and discharge efficiency of the leachate can be effectively improved, the automation degree is improved, the complexity of the process is reduced, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of be used for refuse landfill gas collection well ooze drop liquid drainage device.
Background technology
The household garbage method of disposal has at present: Sanitary Landfill Technology, composting technology, incineration technology etc.Sanitary Landfill Technology is occupied suitable ratio at present in China and even whole world domestic rubbish disposal, particularly necessity so the technical research in this field seems.
Because what accept is undressed household garbage, organic principle is many, at landfill after a period of time, can produce a large amount of gas, its main component is hydrogen sulfide, ammonia and volatile organic matter (VOCs), methane etc., not only produces strong stimulus to the sense organ, and some odorant has toxicity, spill into airborne odorant along with the diffuses flow of air to everywhere, can bring regional influence again.Landfill district table contamination water and scope of operation water evaporates and sewage diposal area also can produce odorous gas in stop and processing procedure, produce thus the smell pollution of surrounding enviroment and the problem that disturbs residents.
On the other hand, after garbage loading embeading half a year to one year, landfill gas produces speed can reach maximum usually, and methane content also can reach maximum in the gas.The incendivity of methane has determined the potential value of landfill gas in the landfill gas.The utilization of landfill gas can replace a considerable amount of fuel consumptions, and it belongs to a kind of of clean fuel.
Therefore, to landfill yard with good conditionsi, on the basis of building the landfill gas gathering system, strengthen comprehensive utilization to landfill gas.Can avoid the pollution problem of landfill gas on the one hand, can utilize the potential fuel characteristic of landfill on the other hand, create certain economic benefits.
The utilization system of landfill gas generally comprises following components: landfill gas gathering system, landfill gas pretreatment system, landfill gas combustion system, landfill gas electricity generation system.
The landfill gas gathering system is made up of several parts such as gas collection well, catch pit, gas gathering networks again.
(1) gas collection well
Gas collection well in the landfill yard adopts the vertical shaft mode more, it is the spiral or hopper formula drill bit of using trepan that typical vertical shaft is built, pierce landfill layer inside, form the cavity of aperture 200mm～900mm, HDPE pipe or the seamless steel pipe of diameter 100mm～200mm is installed in the hole; Pipe is opened aperture and crack from the bottom to the tube wall of distance surface 3～5m; The rubble of annulus filling diameter 25～40mm around the pipe in well, well head is used rubbish, swell soil, bod successively, and landfill gas monitoring mouthful (monitoring concentration, temperature, flow, static pressure, liquid level) and flow control valve are installed on the well head.
Generally speaking, owing in the gas collection well dewatering installation is not set separately, because of amount of precipitation in short-term increases, landfill is organic or perishable rubbish content is excessive, ooze reasons such as drop liquid or rainwater guide system works be not smooth, the capital causes landfill to pile the accumulation of oozing drop liquid in the body, cause the drop liquid liquid level of oozing in the gas collection well to raise, reduce gas conflux efficient and collection efficiency, thereby reduce landfill gas output.
(2) catch pit
Landfill gas guide system catch pit commonly used has following several:
A, direct dewatering type, this kind catch pit is arranged on landfill gas guide system low spot, and the whole U type pipe hydrolock structure that adopts is higher than the position perforate of landfill discharge guiding pipe at the U type pipe other end, flows out from tapping when treating the water spill-over of U type zone, directly infiltrates junk-heap body.The direct dewatering type catch pit of this kind has simple in structure, the characteristics that cost is low, but simultaneously owing to its outfall directly contacts with junk-heap body is inner, the water of discharging directly infiltrates heap body inside on the one hand, increase landfill yard and ooze the drop output of fluid, on the other hand for oozing the assorted landfill yard of the higher or landfill waste of drop liquid water level taste, exist and ooze that drop liquid recharges or the drain hole phenomenon of blocking, catch pit lost efficacy easily.Therefore, this type catch pit generally is of little use.
B, indirect drainage type, this kind catch pit outfall directly do not contact with junk-heap body, and the condensate liquid that landfill gas guide system produces imports in the sealed well by aqueduct.Float-controlled drainage pump is set in the sealed well, is power with compressed air or electricity, opening water discharge pump drainage regularly; Or content gauge is set in sealed well, and wait to reach opening water discharge pump drainage after certain liquid level, draining enters leachate collecting well or sewage treatment facility by mozzle.
This kind indirect-type catch pit has the automaticity height, the characteristics that displacement is stable, but because this covering device structure is complicated, for medium-sized or large-scale landfill yard, need to be equipped with tens of even up to a hundred s' drainage pump and corresponding automatic control system, and sealed well processing difficulties, cause construction costs higher, and operation maintenance intensity is big.
(3) gas gathering network
Because gas collection well quantity is many, arranges and disperse, for easy to adjust, several wells are connected in the gas gathering station the corresponding arm of each well, mounted valve on each arm, pressure gauge and gas sample tap just can be regulated several extraction wells in a gas gathering station.Utilize the gas collection arm that each gas gathering station is connected to the station of bleeding, the station of respectively bleeding is gathered landfill gas with the back and is delivered in the air guide house steward who lays along landfill yard ring field road by the gas collection main, finally enter and bleed station and back-end processing and utilize facility, promptly form complete gas gathering network.
At present, in correlation technique, gas gathering system exists complex process, cost height, automaticity is low, gas collecting efficiency is low problem.
Summary of the invention
In view of this, the present invention proposes a kind of be used for refuse landfill gas collection well ooze drop liquid drainage device, to solve the problems referred to above in the correlation technique.
According to an aspect of the present invention, provide a kind of be used for refuse landfill gas collection well ooze drop liquid drainage device.
The drop liquid drainage device that oozes that is used for refuse landfill gas collection well according to the present invention is positioned at the gas collection well, this device comprises: header, have upper plate and lower shoe, the position of substantial middle has the hole on the upper plate, and the position of substantial middle has the hole of being furnished with flap valve on the lower shoe; Compressed air hose is connected with admission valve through upper plate; Stack is connected with outlet valve through upper plate; Gutter extends through the inside of header by the hole of upper plate; Guide mechanism is positioned at header, is used for according to the height of water level in header control flap valve opening or to close the hole on the lower shoe, and opens or close admission valve and outlet valve.
Preferably, above-mentioned guide mechanism comprises: controlling organization, be fixed on the outer wall of a pipe fitting, have two projections corresponding to admission valve and outlet valve, also have a bar that extends along the pipe fitting short transverse downwards, first precalculated position on the two ends of bar and second precalculated position have a spacing ring respectively, wherein, pipe fitting extends at the whole height of header, and pipe fitting is connected perforation with gutter; Floating block is located on pipe fitting and the bar, and between two spacing rings, can be along pipe fitting and the upper and lower slip of bar.
Preferably, above-mentioned flap valve comprises: ball float.
According to technical scheme of the present invention, by guide mechanism is set, close and open hole on the lower shoe according to the height of water level in the header, and opening and closing admission valve and outlet valve, can utilize buoyancy of water mechanically to realize oozing in the junk-heap body eliminating of drop liquid, thereby can improve collection efficiency, the raising automaticity of landfill gas effectively, reduce the complex process degree, reduce cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly from manual, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the manual of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of manual, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation that oozes drop liquid drainage device that is used for refuse landfill gas collection well according to the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described, should be appreciated that embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 1 is the structural representation that oozes drop liquid drainage device that is used for refuse landfill gas collection well according to the embodiment of the invention, and this device can be positioned at the gas collection well of refuse landfill.Header 10 has upper plate 12 and lower shoe 14, and the position of substantial middle has hole 16 on the upper plate 12, and the position of substantial middle has the hole 18 of being furnished with flap valve 19 on the lower shoe 14; Compressed air hose 20 is connected with admission valve 22 through upper plate 12; Stack 30 is connected with outlet valve 24 through upper plate 12; Gutter 40 extends through the inside of header 10 by hole 16; Guide mechanism is positioned at header 10, is used for according to the height control flap valve 19 of water levels in the header 10 opening or to close the hole 18 on the lower shoe 14, and opens or close admission valve 22 and outlet valve 24.
Particularly, guide mechanism comprises: controlling organization 56, be fixed on the outer wall of a pipe fitting 54, have two projection (not shown)s corresponding to admission valve 22 and outlet valve 24, also have a bar 59 that extends along the pipe fitting short transverse downwards, first precalculated position on the two ends of bar 59 and second precalculated position have a spacing ring 60,61 respectively, wherein, pipe fitting 54 extends at the whole height of header 10, and pipe fitting 54 is connected perforation with gutter 40; Floating block 52 is located on pipe fitting 54 and the bar 59, and between two spacing rings 60,61, can be along pipe fitting 54 and bar 59 upper and lower slips.
In real work, the operating principle of this device is, when header 10 extraneous liquid levels are higher than its inner liquid level, the flap valve 19 that is positioned at its lower shoe 14 inside is held up by buoyancy of water, open hole 18, ooze drop liquid and enter header 10 inside by hole 18, liquid level raises in the header 10, floating block 52 upwards slides along pipe fitting 54 and bar 59, and header 10 gas inside are discharged by the outlet valve 24 and the stack 30 that are in opening.When liquid level continues to raise, after floating block 52 touches spacing ring 60, floating block 52 drives bar 59 when continuing upwards to slide and moves upward, make the projection on the controlling organization 56 open admission valve 22, another projection is closed outlet valve 24 simultaneously, compressed air enters in the header 10 by compressed air hose 20 and the admission valve 22 that is in opening, makes header 10 inner air pressures raise.The air pressure driving floating block 52 that constantly raises moves downward, and makes flap valve 19 fall, the hole on the lower shoe 14 18 is closed simultaneously, and the liquid in the header 10 are pressed into pipe fitting 54 and discharge from gutter 30.Liquid level decline when liquid, when floating block 52 slides into the spacing ring 61 of bar 59 downwards, drive bar 59 and move downward, make that the projection on the controlling organization 56 is closed admission valve 22, another projection is opened outlet valve 24, the guide circulation of having finished a landfill gas and having oozed drop liquid.
Specifically practicing in the process, having following at least three aspect technological merits according to the filter sepage drainage device of the embodiment of the invention:
1, can solve landfill gas preferably and collect the problem of gathering the percolate guide in the well
At present in correlation technique, landfill yard is because in the process of using, the percolate guide system of bottom weakens gradually even loses its function of use, along with the increase of landfill operation time, percolate can not obtain guide smoothly, and a large amount of percolates is by landfill operation surface and side slope seepage, not only caused pollution to environment, simultaneously, because percolate can not in time be derived, the stability of piling body to landfill has caused very big influence.In the past landfill gas is collected well the percolate that deposits in the guide well is not played guide effect preferably, and this invention has reduced the water level of piling body effectively, has reduced to this part percolate of guide to have spent lot of manpower and material resources.
2, improved the landfill gas collection efficiency
Existing landfill gas gathering system mostly is the vertical collection well, its height of collecting landfill gas efficient depends on the height of percolate water level in the well, after adopting this contrive equipment, along with percolate in the well is constantly extracted, the percolate water level reduces gradually, and the landfill gas collection efficiency is further enhanced.
3, device is installed simply, and running cost is low, is easy to maintaining
Traditional electric power or compressed air-driven dewatering installation be complex structure often, for medium-sized or large-scale landfill yard, need to be equipped with tens of even up to a hundred s' drainage pump and corresponding automatic control system, and the sealed well processing difficulties causes construction costs higher, and operation maintenance intensity is big.This device need not manually-operated at run duration, the construction and installation facility, and technology is simple, can be continuously long-running, and energy consumption is extremely low, takes into full account the economy of landfill yard operation when improving the landfill gas collection efficiency.
In sum,, will be positioned over according to the device of the embodiment of the invention in the gas collection well, and at first can reduce percolate water level in the well easily, improve the landfill gas gas collecting efficiency by technical scheme of the present invention; Next is to utilize mechanical movement to open and close admission valve and outlet valve, uses the signal of telecommunication or magnetic signal by-pass valve control to open in correlation technique, and device is simple, and fault rate is low; At last flap valve is adopted the float-ball type structure, can open or close, conveniently flow to unidirectional control according to flow direction.Summarize describedly, the embodiment of the invention can utilize buoyancy of water mechanically to realize the eliminating of oozing drop liquid in the landfill heap body, thereby can improve the landfill gas collection efficiency effectively, improve automaticity, reduces the complex process degree, reduces cost.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
- One kind be used for refuse landfill gas collection well ooze drop liquid drainage device, this device is positioned at the gas collection well, it is characterized in that, comprising:Header (10) has upper plate (12) and lower shoe (14), and the position that described upper plate (12) is gone up substantial middle has hole (16), and the position that described lower shoe (14) is gone up substantial middle has the be furnished with flap valve hole (18) of (19);Compressed air hose (20) is connected with admission valve (22) through described upper plate (12);Stack (30) is connected with outlet valve (24) through described upper plate (12);Gutter (40) extends through the inside of described header (10) by described hole (16);Guide mechanism, be positioned at described header (10), be used for controlling described flap valve (19) opening or to close the hole (18) on the described lower shoe (14), and open or close described admission valve (22) and described outlet valve (24) according to the height of the interior water level of described header (10).
- 2. according to claim 1 be used for refuse landfill gas collection well ooze drop liquid drainage device, it is characterized in that described guide mechanism comprises:Controlling organization (56), be fixed on the outer wall of a pipe fitting (54), have two projections corresponding to described admission valve (22) and described outlet valve (24), also has a bar (59) that extends along described pipe fitting short transverse downwards, first precalculated position on the two ends of described bar (59) and second precalculated position have a spacing ring (60,61) respectively, wherein, described pipe fitting (54) extends at the whole height of described header (10), and described pipe fitting (54) is connected perforation with described gutter (40);Floating block (52) is located on described pipe fitting (54) and the described bar (59), and is positioned between two described spacing rings (60,61), can be along described pipe fitting (54) and the upper and lower slip of bar (59).
- 3. garbage loading embeading gas according to claim 1 and 2 and ooze drop liquid drainage device is characterized in that described flap valve (19) comprising: ball float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101541321A CN102235028A (en) | 2010-04-23 | 2010-04-23 | Leachate guide and discharge device for garbage landfill gas collecting well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101541321A CN102235028A (en) | 2010-04-23 | 2010-04-23 | Leachate guide and discharge device for garbage landfill gas collecting well |
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| Publication Number | Publication Date |
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| CN102235028A true CN102235028A (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101541321A Pending CN102235028A (en) | 2010-04-23 | 2010-04-23 | Leachate guide and discharge device for garbage landfill gas collecting well |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9909598B1 (en) | 2014-02-24 | 2018-03-06 | Landtec North America, Inc. | Well monitoring and pressure controlled landfill pump |
| CN111364583A (en) * | 2020-03-17 | 2020-07-03 | 张浩然 | Monitoring, guiding and discharging treatment system for landfill leachate |
| 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 |
| CN114411916A (en) * | 2022-01-24 | 2022-04-29 | 济南市市政工程设计研究院（集团）有限责任公司 | Leachate drainage system and method suitable for rigid landfill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004405A (en) * | 1989-08-02 | 1991-04-02 | Breslin Michael K | Pneumatically powered submersible fluids pump with integrated controls |
| US5944490A (en) * | 1996-11-12 | 1999-08-31 | Breslin; Michael K. | Pneumatically operated submersible pump with float control |
| CN1786485A (en) * | 2005-11-11 | 2006-06-14 | 南京大学 | Method for draining of vertical shaft with garbage filling gas and system thereof |
-
2010
- 2010-04-23 CN CN2010101541321A patent/CN102235028A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004405A (en) * | 1989-08-02 | 1991-04-02 | Breslin Michael K | Pneumatically powered submersible fluids pump with integrated controls |
| US5944490A (en) * | 1996-11-12 | 1999-08-31 | Breslin; Michael K. | Pneumatically operated submersible pump with float control |
| CN1786485A (en) * | 2005-11-11 | 2006-06-14 | 南京大学 | Method for draining of vertical shaft with garbage filling gas and system thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9909598B1 (en) | 2014-02-24 | 2018-03-06 | Landtec North America, Inc. | Well monitoring and pressure controlled landfill pump |
| US10030651B1 (en) | 2014-02-24 | 2018-07-24 | Q.E.D. Environmental Systems, Inc. | Submersible landfill pump |
| US10502039B2 (en) | 2014-02-24 | 2019-12-10 | Landtec North America, Inc. | Well monitoring and pressure controlled landfill pump |
| CN111364583A (en) * | 2020-03-17 | 2020-07-03 | 张浩然 | Monitoring, guiding and discharging treatment system for landfill leachate |
| 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 |
| CN114411916A (en) * | 2022-01-24 | 2022-04-29 | 济南市市政工程设计研究院（集团）有限责任公司 | Leachate drainage system and method suitable for rigid landfill |
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Application publication date: 20111109 |