CN101229547A - Gathering system used on landfill site landfill gas guiding and exhausting - Google Patents
Gathering system used on landfill site landfill gas guiding and exhausting Download PDFInfo
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- CN101229547A CN101229547A CNA2007101736559A CN200710173655A CN101229547A CN 101229547 A CN101229547 A CN 101229547A CN A2007101736559 A CNA2007101736559 A CN A2007101736559A CN 200710173655 A CN200710173655 A CN 200710173655A CN 101229547 A CN101229547 A CN 101229547A
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Abstract
The invention discloses a collection-diversion system for landfill gas in a landfill site, which is characterized in that a collection tank for landfill gas is positioned between pile layers; the collecting tank is internally filled with gravel and provided with at least two perforated guide pipes; the peripheral of the collecting tank is wrapped by bidirectional geotechnical grille; the under part of the collection tank is provided with diversion pipe which is connected with a connection pipe of a horizontal tank; one end of the connection pipe of the horizontal tank is connected with the main pipe of the landfill gas through a pipe section with a reversed U shape; the other end of the connection pipe of the horizontal tank is connected with a leachate recirculation pipe. As a plurality of perforation guide pipes are arranged at the bottom of the collection tank, and the leachate collected in the guide pipe can fast return to the leachate flowing layer at the bottom after the leachate is accessed to the recirculation pipe through the connection pipe of the horizontal tank , the invention can effectively prevent pilling up of the leachate effecting the landfill gas diversion emission; the landfill gas collected in the diversion pipe is connected to the landfill gas main pipe through a reversed U-shaped HDPE bending pipe section which can prevent condensate of the landfill gas spilling into the main pipe of the landfill gas, which is in favor of the diversion of the landfill gas in the main pipe.
Description
Technical field:
The present invention relates to the guide technical field of landfill yard landfill gas, specifically a kind ofly can prevent to ooze drop liquid enrichment silting, help the horizontal collection facility of landfill gas guide, be specially adapted to the guide of the landfill gas in the bigger junk-heap body of landfill thickness.
Background technology:
The inevitable outcome that landfill gas is decomposed as microbiological anaerobic in the garbage loading embeading processing procedure, its Main Ingredients and Appearance is methane (content is generally 40%-65%).As everyone knows, landfill gas can pollute the ambient atmosphere environment, and (molecular formula is CH to methane wherein
4) be not only flammable explosive gas; be to cause greenhouse gases by force simultaneously; the potential value of the greenhouse effects of its equivalent volume is 21 times of carbon dioxide; relevant statistics shows; the discharge of methane amount of landfill yard accounts for the 6%-18% of global discharge of methane total amount; so, be the discharging of protection atmospheric environment and minimizing greenhouse gases, it is significant with comprehensive utilization that landfill gas is implemented effective collection.
In recent years, landfill gas is generated electricity as the topmost comprehensive utilization of resources technology of landfill gas, is just obtaining at home promoting and is using; The active air suction mode with the peupendicular hole guide is generally adopted in the collection of landfill gas at present, and promptly interval 30～50m arranges vertical air guide well in junk-heap body, and the general 10～25m of well depth is connected to main pipe by horizontal tube behind each about 1m in well head discharging garbage surface.
Adopt vertical air guide collection mode to have the following disadvantages, be analyzed as follows:
(1) piles the surface according to 30～50m pitch arrangement peupendicular hole at landfill, and should be with the corresponding height that upwards connects of heap height of junk-heap body, for avoiding the landfill operation vehicle that the bump of peupendicular hole is damaged, when landfill operation, need take corresponding safety management measure, so peupendicular hole is more suitable in the collection of the landfill gas of the landfill yard that closes on closing, for the landfill yard of operating, adopt vertical air guide well that the communications and transportation of landfill operation equipment is brought inconvenience, very big to the influence of landfill operation operation management.
(2) when garbage loading embeading thickness is big, owing to cover in the middle of in the garbage loading embeading process and day relative impermeability of covering earth material, there is the middle aquitard of irregular distribution in heap body inside, causing junk-heap body inside to ooze drop liquid goes out to flow not smooth, thereby ooze drop liquid water level distribution relative complex in the junk-heap body, and generally continue higher; When laying peupendicular hole with this understanding, often can be full of for a long time in the peupendicular hole and ooze drop liquid, ooze drop liquid water level in the well and in long time, all maintain 8～10m below the junk-heap body surface, because the water seal effect of oozing drop liquid in the well, effective collection of peupendicular hole is piled body highly relatively and is explained and show less than normal, can not realize efficient collection for the landfill gas of following more deep thickness scope.Along with the increase of garbage loading embeading heap body thickness, the collection efficiency of peupendicular hole will significantly reduce, and only adopt the peupendicular hole mode can not realize effective collection of landfill gas.
Summary of the invention:
The object of the present invention is to provide a kind of gathering system that is used for the guide of landfill yard landfill gas, operation does not impact to landfill operation to implement this system, can realize effective collection of landfill gas, help piling the guide that body oozes drop liquid simultaneously, and have the construction characteristic of simple, can effectively save the quantities of landfill gas gathering system.
To achieve these goals, technical scheme of the present invention is: a kind of gathering system that is used for the guide of landfill yard landfill gas, it is characterized in that: the landfill gas feeder is positioned at heap body interlayer, filling rubble in this landfill gas feeder, be provided with at least 2 perforation HDPE discharge guiding pipes, the periphery of feeder adopts two-way GSZ parcel, and perforation HDPE discharge guiding pipe is laid in the feeder bottom; Discharge guiding pipe is connected with the level trough tube connector, and an end of level trough tube connector is connected with the landfill gas main by the inverted U pipeline section, the other end of level trough tube connector with ooze drop liquid and recharge to manage and be connected.
Use import when of the present invention in the feeder discharge guiding pipe ooze drop liquid through the level trough tube connector insert recharge pipe after, can ooze drop liquid water conservancy diversion layer in the fast return bottom of the reservior, effectively prevent to ooze the rich long-pending influence of drop liquid to the landfill gas guide; The landfill gas that imports the feeder discharge guiding pipe inserts the landfill gas main through the level trough tube connector by inverted U HDPE bend loss, and inverted U HDPE pipeline section can prevent that the landfill gas condensate liquid from overflowing into the landfill gas main, helps the guide of landfill gas in the main.This constructing technology is directly buried the landfill gas collection facility underground at junk-heap body surface trench digging, need not the boring well-digging, later landfill yard operation operation is had no adverse effect, the feeder excavation is convenient and swift with pipeline construction, horizontal gathering line adopts flexible structure, can adapt to the bigger sedimentation and deformation of junk-heap body, and effectively improves the guide that the heap body oozes drop liquid, improve the efficient of junk-heap body anaerobic methane production, help piling the stable of body simultaneously.
Description of drawings:
Fig. 1 is the floor map of one embodiment of the invention
Fig. 2 is the profile of Fig. 1
Fig. 3 is the feeder sectional drawing
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing.
The present invention is a kind of gathering system that is used for the guide of landfill yard landfill gas, it is characterized in that: landfill gas feeder 1 is according to keeping permanent positive slope to arrange by the reservoir area to periphery, be positioned at heap body 2 interlayers, this landfill gas feeder 1 is provided with at least 2 HDPE perforation discharge guiding pipes 3, filling rubble in the feeder 1, the periphery of feeder 1 adopts two-way GSZ 4 parcels, and perforation HDPE discharge guiding pipe 3 is laid in feeder 1 bottom; Discharge guiding pipe 3 is connected with level trough tube connector 5, and an end of level trough tube connector 5 is connected with landfill gas main 7 by inverted U pipeline section 6, the other end of level trough tube connector 5 with ooze drop liquid and recharge and manage 8 and be connected.Discharge guiding pipe 3 passes the discharge guiding pipe 9 that connects real wall behind the heap body layer, and the discharge guiding pipe 9 of real wall is connected with level trough tube connector 5, is provided with gate valve 10 between the discharge guiding pipe 9 of real wall and the level trough tube connector 5, and the discharge guiding pipe of real wall, inverted U pipeline section all adopt HDPE to manage; Lay GSZ 4, blotter 11, some perforation HDPE discharge guiding pipes 3, rubble packed layer 12, GSZ colligation stitching in the landfill gas feeder successively.Ooze drop liquid and recharge pipe and put along the limit wall cloth of reservoir area, its end oozes drop liquid rubble water conservancy diversion layer at the bottom of extending to the reservoir area.Elder generation position is as requested laid along side slope and is recharged pipe during concrete enforcement, arrive the absolute altitude of setting at garbage loading embeading after, gradient finishing is carried out on the junk-heap body surface, excavate groove again, and in feeder, lay GSZ successively, blotter, some perforation HDPE discharge guiding pipes, rubble packed layer, GSZ colligation sew up; Adopt the atresia solid wall pipe behind the perforation HDPE discharge guiding pipe discharging garbage heap body, extend to the reservoir area periphery and insert the level trough tube connector, level trough tube connector one end inserts the landfill gas main by the inverted U pipeline section, terminal with ooze drop liquid and recharge to manage and be connected.The length of horizontal feeder, arrangement pitch, high process control and perforation HDPE discharge guiding pipe quantity are determined by calculating according to concrete engineering.
Under top rubbish preloading and landfill operation vehicle wheel press loading effect, the intensity of HDPE perforated pipe is calculated with stability and deformation analysis can calculate and check according to " burying ground plastic draining pipeline engineering rules " J10185-2002 relevant regulations, and the spacing of horizontal feeder can be with reference to relevant peupendicular hole arrangement pitch value among " house refuse Sanitary Landfill Technology standard " CJJ17-2004.
Enumerate an example below and describe, as Fig. 1, Fig. 2, shown in Figure 3, suppose certain super-huge refuse landfill, the junk-heap body thickness in landfill zone is 15m at present, and final landfill heap body thickness can reach 60m (not comprising the closing thickness of earth covering).For not influencing the normal operation of landfill yard, intend when the heap body thickness on average reaches 15m, implementing the horizontal gathering system of ground floor landfill gas in advance, according to this present total amount of landfill waste and the size of reservoir area, choose along the horizontal feeder of heap body peripheral intervals 50m laying, horizontal feeder length is got about 200m, section is got 200cm * 150cm, longitudinal gradient is got i=5%, the feeder periphery adopts two-way GSZ parcel, inner filling 15～30mm rubble, 8 DN160 HDPE perforated pipes are laid in the feeder bottom.Horizontal feeder inserts DN200 HDPE level trough tube connector respectively after going out to pile body, and it is terminal to recharge to manage and be connected with oozing drop liquid, and the other end is connected with the landfill gas main through inverted U elbow section.
Claims (5)
1. gathering system that is used for the guide of landfill yard landfill gas, it is characterized in that: the landfill gas feeder is positioned at heap body interlayer, and filling rubble in this landfill gas feeder is provided with at least 2 perforation discharge guiding pipes, the periphery of feeder adopts two-way GSZ parcel, and discharge guiding pipe is laid in the feeder bottom; Discharge guiding pipe is connected with the level trough tube connector, and an end of level trough tube connector is connected with the landfill gas main by the inverted U pipeline section, the other end of level trough tube connector with ooze drop liquid and recharge to manage and be connected.
2. a kind of gathering system that is used for the guide of landfill yard landfill gas according to claim 1 is characterized in that: the landfill gas feeder is according to arranging that by keeping just sloping to periphery in the middle of the heap body slope is than＞0.
3. a kind of gathering system that is used for the guide of landfill yard landfill gas according to claim 1 and 2, it is characterized in that: the discharge guiding pipe of perforation is laid in the feeder bottom, the discharge guiding pipe of perforation passes the discharge guiding pipe that connects real wall behind the heap body layer, the discharge guiding pipe of real wall is connected with the level trough tube connector, be provided with gate valve between the discharge guiding pipe of real wall and the level trough tube connector, the discharge guiding pipe of real wall, inverted U pipeline section all adopt the HDPE pipe.
4. a kind of gathering system that is used for the guide of landfill yard landfill gas according to claim 1 and 2 is characterized in that: lay GSZ, blotter, some perforation HDPE discharge guiding pipes, rubble packed layer, GSZ colligation stitching in the landfill gas feeder from top to bottom successively.
5. a kind of gathering system that is used for the guide of landfill yard landfill gas according to claim 1 and 2 is characterized in that: ooze drop liquid and recharge pipe and put along the limit wall cloth of heap body, its end extends to heap and oozes drop liquid rubble water conservancy diversion layer at the bottom of the body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101736559A CN101229547B (en) | 2007-12-28 | 2007-12-28 | Gathering system used on landfill site landfill gas guiding and exhausting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101736559A CN101229547B (en) | 2007-12-28 | 2007-12-28 | Gathering system used on landfill site landfill gas guiding and exhausting |
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| CN101229547A true CN101229547A (en) | 2008-07-30 |
| CN101229547B CN101229547B (en) | 2012-02-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155024A (en) * | 2011-01-17 | 2011-08-17 | 深圳市信能环保科技有限公司 | Large-sized material storage yard gas guide and discharge well and well cementing construction method |
| CN102900142A (en) * | 2012-09-13 | 2013-01-30 | 河南百川畅银实业有限公司 | U-shaped water drainage device in landfill gas collection pipeline |
| CN103157641A (en) * | 2013-02-26 | 2013-06-19 | 上海市环境工程设计科学研究院有限公司 | Automatic rolling type non-point source pollution gas gathering device and application thereof |
| CN104043638A (en) * | 2014-06-23 | 2014-09-17 | 环境保护部南京环境科学研究所 | Equipment for controlling release of household garbage greenhouse gas CH4 and control method of equipment |
| CN104728851A (en) * | 2015-03-03 | 2015-06-24 | 陆建标 | Process equipment for landfill gas |
-
2007
- 2007-12-28 CN CN2007101736559A patent/CN101229547B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155024A (en) * | 2011-01-17 | 2011-08-17 | 深圳市信能环保科技有限公司 | Large-sized material storage yard gas guide and discharge well and well cementing construction method |
| CN102155024B (en) * | 2011-01-17 | 2013-01-23 | 深圳市信能环保科技有限公司 | Large-sized material storage yard gas guide and discharge well and well cementing construction method |
| CN102900142A (en) * | 2012-09-13 | 2013-01-30 | 河南百川畅银实业有限公司 | U-shaped water drainage device in landfill gas collection pipeline |
| CN103157641A (en) * | 2013-02-26 | 2013-06-19 | 上海市环境工程设计科学研究院有限公司 | Automatic rolling type non-point source pollution gas gathering device and application thereof |
| CN103157641B (en) * | 2013-02-26 | 2015-03-18 | 上海市环境工程设计科学研究院有限公司 | Automatic rolling type non-point source pollution gas gathering device and application thereof |
| CN104043638A (en) * | 2014-06-23 | 2014-09-17 | 环境保护部南京环境科学研究所 | Equipment for controlling release of household garbage greenhouse gas CH4 and control method of equipment |
| CN104728851A (en) * | 2015-03-03 | 2015-06-24 | 陆建标 | Process equipment for landfill gas |
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| Publication number | Publication date |
|---|---|
| CN101229547B (en) | 2012-02-29 |
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