CN103506369A - Landfill gas collection and exhaust guide system of landfill - Google Patents
Landfill gas collection and exhaust guide system of landfill Download PDFInfo
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- CN103506369A CN103506369A CN201310413262.6A CN201310413262A CN103506369A CN 103506369 A CN103506369 A CN 103506369A CN 201310413262 A CN201310413262 A CN 201310413262A CN 103506369 A CN103506369 A CN 103506369A
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Abstract
The invention provides a landfill gas collection and exhaust guide system of a landfill, which comprises a plurality of gas collection stations arranged on the landfill, a gas transmission main pipe, a pumping exhaust fan and a landfill gas centralized treatment device, wherein each gas collection station comprises a plurality of gas collection wells and a gas transmission trunk pipe; each gas collection well is connected with the gas transmission main pipe sequentially by a gas transmission branch pipe and one gas transmission trunk pipe; the gas transmission main pipe is connected with the landfill gas centralized treatment device by the pumping exhaust fan; and a trunk pipe flow control valve is arranged on each gas transmission trunk pipe. With the adoption of the landfill gas collection and exhaust guide system of the landfill, the problems that pressure among gas transmission trunk pipes of gas collection wells of the existing landfill gas collection system is unbalanced, and a landfill gas pumping exhaust flow difference is obvious can be effectively solved, so that orderly management and reasonable development of landfill gas of the landfill are achieved, and pollution to a surrounding environment of a landfill area is reduced.
Description
Technical field
The present invention relates to garbage loading embeading technical field, be specifically related to a kind of landfill yard landfill-gas collecting guide system.
Background technology
Landfill gas (landfill gas, LFG) is in the process of garbage loading embeading, the gas that a large amount of organic principles that contain in rubbish are fermented by microbiological anaerobic or degrade and produce.Main component in rubbish landfill gas is methane (content is generally 40% ~ 65%) and carbon dioxide.Contain the toxic gases such as micro-hydrogen sulfide, mercaptan, vinyl chloride, toluene, hexane, chloromethanes, dimethylbenzene simultaneously.Landfill gas can pollute ambient atmosphere environment, and methane wherein (molecular formula is CH4) is not only flammable explosive gas, is strong greenhouse gases simultaneously, and the potential value of greenhouse effects of its equivalent volume is 21 times of carbon dioxide.Relevant statistics shows, the methane emission of landfill yard accounts for 6% ~ 18% of global discharge of methane total amount.So, be the discharge of environment protection and minimizing greenhouse gases, landfill gas is implemented effectively collect guide and fully utilize significant.Because landfill gas has the hidden danger such as inflammable and explosive and contaminated environment, " household refuse landfill sites pollute control criterion (GB16889-2008) " explicitly calls for household refuse landfill sites will set up landfill gas guide system, runtime of landfill yard and later maintenance with in the management phase, the gas in buring layer is derived after utilize, burn or reach emission request after could directly discharge.With eliminate imflammable gas combustion explosion hidden danger, reduce greenhouse gas emission etc.
The collection of landfill gas at present generally adopts take the guide of vertical gas collection well as main active air suction mode.Particularly, as shown in Figure 1, in landfill heap body, a plurality of gas collection wells 11 are set, adjacent gas collection Jing11 interval 30m～50m, general 10m～the 25m of well depth of gas collection well 11, each well head accesses gas transmission main 12 after going out landfill heap surface, and gas transmission main 12 accesses gas transmission supervisor 13 again, in gas transmission supervisor 13 one end, is provided with pump drainage blower fan 14.Under the suction function forming at pump drainage blower fan 14, the landfill gas of collecting in each gas collection well 11 is flowed through after gas transmission main 12 successively, enters landfill gas centralized processor 15.
Adopt and above-mentionedly take the guide of vertical gas collection well and be when main active air suction mode is collected landfill gas to have the following disadvantages, make a concrete analysis of as follows:
The planar dimension of landfill yard is often all very large, and gas collection well is piled surface according to 30m～50m pitch arrangement at landfill, and each gas collection well is very large with the distance difference between pump drainage blower fan, and the distance ratio of distal-most end and most proximal end is generally more than 30 times.
It is larger that the gas collection well of near-end is affected by the negative pressure of pump drainage blower fan, pump drainage flow is also larger, tend to make the excessive pump drainage of gas collection well ambient air of near-end, thereby cause the methane content mixing in pump drainage gas significantly to reduce, and then affect subsequent treatment and the utilization of landfill gas.
And the gas collection well of far-end is subject to the negative pressure of pump drainage blower fan to affect very little, not affected by it, landfill gas in the gas collection well of far-end mainly relies on the interior malleation of well to external migration, therefore the landfill gas pump drainage flow of the gas collection well of far-end is very little, thereby the landfill gas that causes the interior enrichment of gas collection well of far-end can be piled body and the diffusion of atmosphere free migration towards periphery, both affect ambient atmosphere environment, be unfavorable for again the recycling of landfill gas.
In sum, above-mentioned landfill gas collecting system is because the pressure between the gas transmission main of each gas collection well of connection is extremely uneven, cause the landfill gas pump drainage flow difference of each gas collection well obvious, this not only affects the stable of landfill gas productive rate and quality, be unfavorable for the development and utilization of landfill yard landfill gas, the problem of environmental pollution that simultaneously also exists landfill gas to produce to aerial migration.
Summary of the invention
The object of the present invention is to provide a kind of landfill yard landfill-gas collecting guide system, to solve pressure imbalance and the obvious problem of landfill gas pump drainage flow difference between the gas transmission main of each gas collection well of existing landfill gas collecting system, thereby realize the orderly management of landfill yard landfill gas and reasonable development, and reduce the pollution to landfill district surrounding enviroment.
For solving the problems of the technologies described above, the invention provides a kind of landfill yard landfill-gas collecting guide system, comprise: be arranged at a plurality of gas gathering stations on described landfill yard, gas transmission supervisor, pump drainage blower fan and landfill gas centralized processor, described in each, gas gathering station includes a plurality of gas collection wells and a gas transmission main, described in each, gas collection well is connected to described gas transmission by a gas transmission arm and described gas transmission main successively and is responsible for, described gas transmission supervisor is connected with described landfill gas centralized processor by described pump drainage blower fan, wherein, one main flow control valve is also set on gas transmission main described in each.
Optionally, described in each, gas gathering station includes 8 ~ 12 described gas collection wells.
Optionally, described in each, described a plurality of gas collection wells of gas gathering station are quincunx distribution, and one end of described gas transmission main is positioned at the relative center of described a plurality of gas collection wells.
Optionally, described in each, on gas transmission arm, be provided with an arm flow control valve and an arm sample detecting hole.
Optionally, the distance between adjacent described gas collection well is 30m ~ 50m.
Optionally, described landfill yard landfill-gas collecting guide system also comprises a data processing centre, for the methane concentration of Storage and Processing this gas collection well that arm sample detecting hole collects described in each.
In landfill yard landfill-gas collecting guide system of the present invention, comprise a plurality of gas gathering stations, gas transmission supervisor, pump drainage blower fan and the landfill gas centralized processor that are arranged on described landfill yard, described in each, gas gathering station includes a plurality of gas collection wells and a gas transmission main, described in each, gas collection well is connected to described gas transmission by a gas transmission arm and described gas transmission main successively and is responsible for, described gas transmission supervisor is connected with described landfill gas centralized processor by described pump drainage blower fan, wherein, a main flow control valve is also set described in each on gas transmission main.Each gas gathering station includes a plurality of gas collection wells, on the gas transmission main that Er Yu gas gathering station is connected, be also provided with main flow control valve, therefore can be according to the ruuning situation of each gas gathering station, regulate the flow control valve of each gas gathering station gas transmission main, to reach the landfill gas pump drainage flow equalization uniformly object relative to landfill gas methane content that makes each gas gathering station, both abundant pump drainage landfill gas and don't as for making indivedual gas gathering stations transition pump drainage surrounding air, reduce the pollution of Liao Dui landfill district surrounding enviroment, also avoided methane content landfill gas subsequent treatment low and that cause in exhaust to utilize difficult problem simultaneously.Yi Ge gas gathering station comprises a plurality of gas collection wells simultaneously, a plurality of gas collection wells are turned parts into the whole and become Yi Ge gas gathering station, quantity is carried out to the flow-control of exhaust far fewer than gas collection Jing gas gathering station, convenient being more prone to, thus realized the object to landfill yard landfill gas orderly management.
accompanying drawing explanation
Fig. 1 is the schematic diagram of landfill yard landfill-gas collecting guide system of the prior art;
Fig. 2 is the schematic diagram of the embodiment of the present invention one landfill yard landfill-gas collecting guide system;
Fig. 3 is the floor map of embodiment of the present invention Yi Zhong gas gathering station;
Fig. 4 is the sectional schematic diagram of embodiment of the present invention Yi Zhong gas gathering station;
Fig. 5 is the schematic diagram of the embodiment of the present invention two landfill yard landfill-gas collecting guide systems;
Fig. 6 is the sectional schematic diagram of embodiment of the present invention Er Zhong gas gathering station.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention being proposed to landfill yard landfill-gas collecting guide system is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of the aid illustration embodiment of the present invention lucidly.
Embodiment mono-
As shown in Figure 2, the landfill yard landfill-gas collecting guide system 20 of the present embodiment, comprising: be arranged at a plurality of gas gathering stations 21, gas transmission supervisor 22, pump drainage blower fan 23 and landfill gas centralized processor 24 on described landfill yard.Described in each, gas gathering station 21 includes a plurality of gas collection wells 211 and a gas transmission main 212, described in each, gas collection well 211 is connected to described gas transmission supervisor 22 by a gas transmission arm 213 and described gas transmission main 212 successively, and described gas transmission supervisor 22 is connected with described landfill gas centralized processor 24 by described pump drainage blower fan 23.
For each gas gathering station 21, by gas transmission main 212 and gas transmission arm 213, realized and being connected of each gas collection well 211.As shown in Figure 3, in order to guarantee being connected firmly of each gas transmission main 212 and gas transmission arm 213, conventionally each gas transmission arm 213 in each gas gathering station 21 can be fixed on a supporting steel frame, 212 of gas transmission mains are positioned at each gas transmission arm 213 center.
Shown in Fig. 3 and Fig. 4, a main flow control valve 214 is also set on gas transmission main 212 described in each.For each gas gathering station 21, by gas transmission main 212 and gas transmission arm 213, realized and being connected of each gas collection well 211, by controlling the flow of gas transmission main 212, can realize the flow-control to each gas transmission arm 213.Simultaneously, because be also provided with main flow control valve 214 on gas transmission main 212, according to the difference of the pump drainage flow of the landfill gas of each gas gathering station 21, the landfill gas pump drainage flow of each gas gathering station can be adjusted by described main flow control valve 214, to reach the object of the landfill gas pump drainage flow equalization that makes each gas gathering station.
Because Yi Ge gas gathering station 21 comprises a plurality of gas collection wells 211, a plurality of gas collection wells 211 can be turned parts into the whole and become Yi Ge gas gathering station 21, quantity is carried out to the flow-control of exhaust far fewer than gas collection Jing211 gas gathering station 21, convenient being more prone to, thus can realize the object to landfill yard landfill gas orderly management.The selection of gas collection well 211 quantity in gas gathering station 21, need to consider pump drainage effect and the convenient management to gas gathering station 21 of 21 pairs of landfill gas of gas gathering station, and preferred, each gas gathering station 21 comprises 8 ~ 12 gas collection wells 211.
In order better to guarantee the pump drainage effect of 211 pairs of landfill gas of each gas collection well in gas gathering station 21, preferably, as shown in Figure 2, a plurality of gas collection wells 211 in gas gathering station 21 are quincunx distribution, and described gas transmission main 212 one end is positioned at described a plurality of gas collection Jing211 center.Optionally, the distance between adjacent described gas collection well 211 is 30m ~ 50m.
Continuation, with reference to figure 4, for by meticulousr management, can arrange an arm flow control valve 215 on the gas transmission arm 213 of each gas collection well 211, is used for accurately controlling the pump drainage flow of the landfill gas of each gas collection well 211.In addition, in order to hold more accurately the number of the methane content in the exhaust in each gas collection well 211, one arm sample detecting hole 216 can be set on each gas transmission arm 213 again, in arm sample detecting hole, 216 connect a portable gas analytical instrument, can analyze methane in the exhaust that draws this gas collection well 211, carbon dioxide, the content of the gas componants such as oxygen, can judge accordingly whether this gas collection well 211 existed the phenomenon of pump drainage, and can adjust by being arranged on arm flow control valve 215 on this gas transmission arm 213 pump drainage flow and the pump drainage pressure of this gas collection well 211.
Embodiment bis-
The difference of the present embodiment and embodiment mono-is, in burying a landfill-gas collecting guide system, increased data processing centre, the methane concentration remote data of each gas collection well on landfill yard is transferred to data processing centre, with this, realize the remote real time monitoring to the collection situation of landfill gas.A landfill-gas collecting guide system of burying that describes the present embodiment below in detail, the part identical with embodiment mono-repeats no more.
Specifically, as shown in Figure 5 and Figure 6, the landfill yard landfill-gas collecting guide system 30 of the present embodiment comprises a plurality of gas gathering stations 31, described in each, gas gathering station 31 includes a plurality of gas collection wells 311 and a gas transmission main 312, described in each, gas collection well 311 is connected on described gas transmission main 312 by a gas transmission arm 313, and a main flow control valve 314 is set on gas transmission main 312.
Continuation is with reference to figure 6, in order to detect the gas componant of the exhaust in gas gathering station 31, one main sample detecting hole 315 can be set on gas transmission main 312, and on main sample detecting hole 315, connecting a main gas composition analyzer 316, each main gas composition analyzer 316 is connected to described data processing centre 32.By the 32 control personnel of data processing centre can remote real time monitoring to the data of the various gas componants in the exhaust of each gas gathering station 31, and according to the data of methane concentration in the exhaust of each gas gathering station, draw methane concentration distribution map, methane concentration distribution map according to each gas gathering station, can better instruct the pump drainage pressure of each gas gathering station to control, thereby realize the optimization operation to whole landfill yard landfill-gas collecting guide system.
Adopt the landfill yard landfill-gas collecting guide system of the present embodiment, can realize the collection situation remote real time monitoring to the landfill gas of landfill yard, utilize the remote monitoring data of the gas componant of landfill gas exhaust, set up landfill gas gathering station methane production dynamic data base, and then structure whole audience landfill gas output utilization planning and development model, by regulating the flow control valve of each gas gathering station and gas collection well, the dynamic combined that the different operating mode next part of rational allocation gas well is bled, can improve to the full extent the content of methane gas in the gas collection amount of landfill gas collecting system and stable landfill gas, not only be beneficial to the intellectuality operation that realizes landfill gas guide system, significantly improve the operation management level of landfill gas, be more conducive to the stable operation of landfill gas later use facility, thereby cost saving and running cost.
In sum, with in landfill yard landfill-gas collecting guide system of the present invention, each gas gathering station includes a plurality of gas collection wells, on the gas transmission main that Er Yu gas gathering station is connected, be also provided with main flow control valve, therefore according to the ruuning situation of gas gathering station and gas collection well, can adjust by described main flow control valve the landfill gas pump drainage flow of each gas gathering station, to reach the object of the landfill gas pump drainage flow equalization that makes each gas gathering station, both abundant pump drainage landfill gas and don't as for making indivedual gas gathering stations transition pump drainage surrounding air, reduce the pollution of Liao Dui landfill district surrounding enviroment, also avoided methane content landfill gas subsequent treatment low and that cause in exhaust to utilize difficult problem simultaneously.Yi Ge gas gathering station comprises a plurality of gas collection wells simultaneously, a plurality of gas collection wells are turned parts into the whole and become Yi Ge gas gathering station, quantity is carried out to the flow-control of exhaust far fewer than gas collection Jing gas gathering station, convenient being more prone to, thus realized the object to landfill yard landfill gas orderly management.
Foregoing description is only the description to preferred embodiment of the present invention, the not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention is done according to above-mentioned disclosure, all belong to the protection domain of claims.
Claims (6)
1. a landfill yard landfill-gas collecting guide system, it is characterized in that, comprise: be arranged at a plurality of gas gathering stations, gas transmission supervisor, pump drainage blower fan and landfill gas centralized processor on described landfill yard, described in each, gas gathering station includes a plurality of gas collection wells and a gas transmission main, described in each, gas collection well is connected to described gas transmission by a gas transmission arm and described gas transmission main successively and is responsible for, described gas transmission supervisor is connected with described landfill gas centralized processor by described pump drainage blower fan, wherein, a main flow control valve is also set described in each on gas transmission main.
2. landfill yard landfill-gas collecting guide system as claimed in claim 1, is characterized in that, described in each, gas gathering station includes 8 ~ 12 described gas collection wells.
3. landfill yard landfill-gas collecting guide system as claimed in claim 1, is characterized in that, described in each, described a plurality of gas collection wells of gas gathering station are quincunx distribution, and one end of described gas transmission main is positioned at the relative center of described a plurality of gas collection wells.
4. landfill yard landfill-gas collecting guide system as claimed in claim 1, is characterized in that, is provided with an arm flow control valve and an arm sample detecting hole described in each on gas transmission arm.
5. landfill yard landfill-gas collecting guide system as claimed in claim 1, is characterized in that, the distance between adjacent described gas collection well is 30m ~ 50m.
6. landfill yard landfill-gas collecting guide system as claimed in claim 4, is characterized in that, also comprises a data processing centre, for the methane concentration of Storage and Processing this gas collection well that arm sample detecting hole collects described in each.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310413262.6A CN103506369B (en) | 2013-09-12 | 2013-09-12 | Landfill gas collection and exhaust guide system of landfill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310413262.6A CN103506369B (en) | 2013-09-12 | 2013-09-12 | Landfill gas collection and exhaust guide system of landfill |
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| CN103506369A true CN103506369A (en) | 2014-01-15 |
| CN103506369B CN103506369B (en) | 2015-07-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421803A (en) * | 2018-05-15 | 2018-08-21 | 北京环境工程技术有限公司 | A kind of surface gas collection device |
| CN109847557A (en) * | 2018-12-18 | 2019-06-07 | 中国科学院武汉岩土力学研究所 | Refuse landfill gas barrier arragement construction and blocking method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060005572A1 (en) * | 2003-05-22 | 2006-01-12 | Wikstrom Jon P | System for use of land fills and recyclable materials |
| CN101597563A (en) * | 2009-07-13 | 2009-12-09 | 创东能源环保科技（福建）有限公司 | The constructional method of refuse embedded gas collection and generating set and gas collection well |
| CN202081101U (en) * | 2011-05-25 | 2011-12-21 | 河南百川畅银实业有限公司 | Landfill gas collecting system |
-
2013
- 2013-09-12 CN CN201310413262.6A patent/CN103506369B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060005572A1 (en) * | 2003-05-22 | 2006-01-12 | Wikstrom Jon P | System for use of land fills and recyclable materials |
| CN101597563A (en) * | 2009-07-13 | 2009-12-09 | 创东能源环保科技（福建）有限公司 | The constructional method of refuse embedded gas collection and generating set and gas collection well |
| CN202081101U (en) * | 2011-05-25 | 2011-12-21 | 河南百川畅银实业有限公司 | Landfill gas collecting system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421803A (en) * | 2018-05-15 | 2018-08-21 | 北京环境工程技术有限公司 | A kind of surface gas collection device |
| CN109847557A (en) * | 2018-12-18 | 2019-06-07 | 中国科学院武汉岩土力学研究所 | Refuse landfill gas barrier arragement construction and blocking method |
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| CN103506369B (en) | 2015-07-22 |
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