CN108149715A - A kind of garbage loading embeading heap body percolate and landfill gas discharge method - Google Patents
A kind of garbage loading embeading heap body percolate and landfill gas discharge method Download PDFInfo
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- CN108149715A CN108149715A CN201710260934.2A CN201710260934A CN108149715A CN 108149715 A CN108149715 A CN 108149715A CN 201710260934 A CN201710260934 A CN 201710260934A CN 108149715 A CN108149715 A CN 108149715A
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- guide
- percolate
- wall
- landfill gas
- heap body
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of garbage loading embeading heap body percolate and landfill gas discharge methods, are related to the technical fields such as environmental protection, consumer waste filling and embedding more particularly to a kind of garbage loading embeading heap body percolate and landfill gas discharge method.For the blocking occurred during traditional percolate from garbage filling field and landfill gas guide, guide is not smooth the problems such as, the present invention oozes wall construction by establishing one kind and leading, so as to solve problem above, realize percolate and landfill gas combines guide, the present invention has that excavation is few, do not need to well-digging, construction safety, progress are fast, can be to junk-heap body guide system progress reconstruction the features such as.
Description
Technical field
The present invention relates to the technical fields such as environmental protection, consumer waste filling and embedding more particularly to a kind of garbage loading embeading heap body to ooze
Filtrate and landfill gas discharge method.
Background technology
House refuse Sanitary Landfill Technology is the method for the most important processing domestic waste in China, wherein garbage filter
Liquid collects guide system and landfill gas and collects the important component that guide system is refuse landfill, main function be by
Percolate and landfill gas guide the discharge landfill heap body generated during garbage degradation, prevents percolate and pernicious gas to water body
With the pollution of air.Its rational design can reduce the head height of percolate and landfill air pressure, improve heap body stability, be
Subsequent secondary pollution, which is administered, provides necessary condition.
Mostly using the french drain guide of fork-shaped arrangement, structure type is on impervious barrier for domestic refuse landfill at present
It is laid with horizontal lead layer cobble and collects floral tube (PE pipes).It is found by the field investigation of landfill percolate guide system, by
In microbial activities and the collective effect into particle, the fouling and clogging for leading infiltration layer is serious, and system is oozed to the conveying of liquid collecting perforated pipe
The ability of filtrate declines.Simultaneously because the differential settlement of garbage loading embeading heap body is easy to cause the fracture of leachate collection floral tube.
The not smooth harmful effect of percolate guide includes：
1st, percolate gathers in heap body.
The reduction of infiltration layer voidage, permeability decrease are led in blocking, and percolate accumulation causes water level to increase so that the expansion of Leachate site
It dissipates coefficient and increases 2-3 times, also increase the possibility of percolate extravasation.
2nd, shorten the service life of impervious material.
Leading infiltration layer blocking causes to fill heap temperature rising, can generally reach 50 DEG C -60 DEG C so that impervious material makes
It is reduced (under the conditions of 15 DEG C, the service life of HDPE film is 200 years, and at 33 DEG C, service life drops to 70 years) with the service life.
3rd, MSW stability is influenced.
Percolate is largely assembled in landfill yard bottom storehouse, on the one hand increases the possibility through impervious barrier leakage, changes landfill
The initial designs condition of field bottom storehouse, that is, waste dam, may cause bottom storehouse to surpass the sedimentation of design, the stability of waste dam and safety
Also it is on the hazard.And the differential settlement caused by junk-heap body itself unstability state, cause percolate, biogas discharge guiding pipe
Road rupture, which blocks, can not realize guide function.Heap body water level inside in paralyzed state rises guide system for a long time, and head increases
Add, if solving the problems, such as the guide of percolate and biogas inside heap body not in time, heap body landslide, landslide major accident will be caused.
4th, the guide of landfill gas is influenced
Since percolate guide does not cause that head pressure is excessively high in junk-heap body freely, the collection guide of landfill gas is influenced.
5th, landfill heap body garbage degradation is influenced
Humidity is a very important impact factor during garbage degradation, influences microbial activities, growth and divides
Cloth, the movement of too low humidity restriction micro-organisms and metabolism, make microbial activities suppressed.Humidity is also during garbage degradation
Influence the balance that acid is converted into methane and organic acid acid amount by methanogen floras.
To solve problem above, the present invention provides a kind of technology, while realizes the effective of landfill leachate and landfill gas
Guide, alternative tradition percolate, landfill gas guide technology, is especially suitable for repairing for old garbage loading embeading heap body percolate guide system
It is multiple to rebuild.
Invention content
The invention mainly solves the technical problem of providing a kind of garbage loading embeading heap body percolates and landfill gas guide skill
Art can solve the problems, such as that conventional garbage landfill heap body percolate guide system jams and landfill gas guide be not smooth.Effectively carry
High percolate percolation flow velocity prevents from collecting floral tube fracture, prevents accumulation of the percolate in garbage loading embeading heap body, while improve biogas
Guide efficiency.
The guide of landfill leachate and landfill gas mainly oozes wall come what is realized by leading in the present invention, leads and oozes wall percolate
Collection system is mainly by wall, air guide floral tube, leachate collection end pipe, leachate collection supervisor, air-guide main tube, water seal, carbonated drink
The compositions such as separator, valve.
Wall：Wall is to dig out deep about 30m along junk-heap body transverse direction and longitudinal direction using hydraulic clamshell high-front shovel,
Wide 0.8 meter of groove inserts the cobble of 40~60mm of grain size in the trench.
Air guide floral tube：Air guide floral tube is that have the perforation of φ 200HDPE pipes to be made, and is evenly distributed on to lead according to 30m spacing and oozes wall
In body.
Leachate collection end pipe：Leachate collection supervisor is managed using φ 400HDPE, positioned at junk-heap body surrounding, by pre-
Embedded part is led with rubbish oozes wall connecting.
Leachate collection is responsible for：Each leachate collection end pipe is connected, collects the percolate that each end pipe is collected.
Collecting methane is responsible for：In air guide floral tube upper end, setting collecting methane is responsible for.
Water seal：Water seal, which is located to lead, oozes between wall and leachate collection supervisor, and using U-tube water seal, main function is to prevent
Biogas is leaked from leachate collection pipe；
Steam-water separator：Steam-water separator is installed to be responsible for biogas, and effect is the condensed water excluded in methane pipeline.
Valve：Appropriate location is installed, control action.
Purpose to realize the present invention provides following technical solution：
1st, using more large-sized grading cobble, (40mm-60mm, CaCO3 content are not more than wall filler as far as possible
10%) voidage of filler is allowd to accommodate the particle that more percolates carry, prevents filler from blocking；
2nd, the surface area of filler is reduced, the apposition growth of microorganism is reduced, reduces the chemical precipitation of inorganic matter；
3rd, the thickness of infiltration layer is led in increase, and bottom is laid with 2000mm thickness and leads infiltration layer so that filtrate can accommodate more diafiltrations
Liquid belongings and fouling；
4th, vertical collecting floral tube is protected using the steel mesh cage of diameter 500mm, prevents from collecting floral tube breakage problem；
6th, intersecting parallels lead ooze that wall is provided with two horizontal two longitudinal directions lead infiltration layer, in favor of percolate guide；
7th, it to prevent silting, in waste layer and leads geotextiles separate layer is set between infiltration layer, filtering material is usually using soil
Work fabric, as long filament needle pierces geotextile；
Operation principle of the present invention：
Landfill leachate and biogas ooze wall diffusion inside along the continuous guide of junk-heap body, ooze portion within the walls, rubbish leading
Percolate is responsible for along wall guide to leachate collection, and leachate collection supervisor is connected with leachate collection well, and percolate leads to
It crosses collection well elevator pump and is promoted to regulating reservoir.Biogas then oozes wall and is collected to biogas floral tube along leading, and biogas floral tube is connected with supervisor, natural pond
Gas is gone out along biogas supervisor's guide.
1st, the joint guide of percolate and landfill gas in garbage loading embeading heap body can be realized；
2nd, can be by the long-armed digging machine cutting depth of hydraulic clamshell up to 30 meters, width is 0.8 meter of groove, by
The cobble that grain size 40~60mm is filled in groove forms top-down lead and oozes wall, can realize that percolate and landfill gas layering are led
Row.
3rd, air guide floral tube is perforated with φ 200HDPE pipes and is made, and is evenly distributed on to lead according to a determining deviation and ooze in wall, and set
It puts in steel reinforcement cage, can effectively prevent junk-heap body differential settlement and deformation that air guide floral tube is caused to be broken.
4th, leachate collection end pipe, which is stratified and set on to lead, oozes wall both ends, by built-in fitting in lead ooze wall connect, be percolated
Liquid is collected between end pipe and leading oozes wall end and sets water seal, landfill gas can effectively be prevented to enter leachate collection pipe.
5th, old Landfill guide system can be transformed, the excavation that work progress does not need to be too many is made
Industry；
6th, guide can be carried out to percolate and biogas along heap body vertical higher slice, avoids percolate and biogas locally product
It is tired；
7th, percolate and biogas can be collected simultaneously, does not need to carry out natural pond gas wel well-digging operation；
8th, construction main mechanical is the long-armed digging machine of hydraulic grab, and steel plate can repeat profit as supporting construction, steel plate
With simultaneously, and water flow inside heap body can be prevented excessive；
9th, setting sludge gas collection well is not needed to, does not need to well-digging operation, safety accident in work progress is effectively reduced and occurs
Probability.
Description of the drawings
Fig. 1 is that leading for the present invention oozes wall plan view；As shown in Figure 1, wherein serial number 1 is grading cobble filtrate, serial number 2 is to lead
Gas floral tube.
Fig. 2 is that leading for the present invention oozes wall sectional view；As shown in Fig. 2, wherein serial number 1 is grading cobble filtrate, serial number 2 is to lead
Gas floral tube, serial number 3 are Leachate site guide layers.
Fig. 3 is biogas floral tube trepanning drawing.Explanation：1. unit：Millimeter.2. it is (high for HDPE to illustrate guide air pipe material
Density polyethylene).The pipe uses PE100 grades, standard size than SDR13.6, nominal pressure 1.25Mpa, specification D=200mm,
Wall thickness ＞ 14.7mm.3.HDPE floral tubes hole presses quincuncial arrangement, hole diameter φ 20mm, spacing 100mm.
Specific embodiment
It leads and oozes wall construction and northwards excavated by southern side, cutting depth 30m, excavation length is unsuitable long for the first time, and length is little
In 10m, every section of excavation length is 20m later, and heap body internal water enters horizontal collecting main after excavation, and percolate enters percolate
Collecting main is discharged into Ji Chi and promotes well treatment, and biogas part enters horizontal collecting methane master into vertical biogas floral tube part
Pipe, last guide to marsh gas power generation factory.
It leads and oozes wall construction technology step：
1st, levelling of the land
Levelling of the land is carried out using crowd shovel bull-dozer according to place concrete condition in a certain direction, obstacle is purged.
2nd, it leads and oozes wall unwrapping wire
It oozes wall to leading according to design drawing and measures unwrapping wire, construction unit is checked, and after review is errorless, can be carried out
It excavates.
3rd, water, the construction of gas collecting main
After the completion of leachate collection pool is constructed and checked and accepted, aqueous vapor collecting main construction is carried out, supervisor is using diameter
400mmHDPE is managed, and main guide first segment excavates the percolate and biogas of discharge.Automatic sweat soldering is used when conduit connects,
Welding meets welding process requirement.
4th, first segment, which is led, oozes wall channel excavation
Excavation length control for the first time is led in the range of 10m and oozes soil body stage excavation when wall excavates, excavation width 800mm,
Every layer of cutting depth is no more than 3m, excavates rear end using slope formula, the gradient is not less than 1:3, the percolate of outflow is received by level
Collection supervisor is collected.
5th, pebblepacking is constructed
First segment is led ooze wall channel excavation after, carry out pebblepacking construction, selected cobble is the grade after stringent screening
With building stones, a diameter of 40cm-60cm building stones are solid, and with perfectly round surface.
6th, vertical biogas floral tube construction
By the use of steel mesh cage as pattern pipe retaining wall, diameter uses 500mm, and steel mesh cage main reinforcement is 4 ￠ 6, and every section of processing is grown
It spends for 6m, scene is overlapped using welding form.It is hung using excavator, in time in steel mesh cage centre bit after hanging
Put and hang the vertical pattern pipes of diameter 200mm, steel mesh cage spacing 30m, steel mesh cage and between be filled with graded broken stone filtering layer, top
It bankets in the range of 2m compaction in layers.
7th, second segment, which is convinced by patient analysis, oozes wall excavation
It carries out subsequently leading the construction for oozing wall according to above step sequence, be completed until leading and oozing wall system construction.
Claims (4)
1. a kind of percolate from garbage filling field and landfill gas guide system ooze wall, air guide floral tube, leachate collection end including leading
Pipe, leachate collection supervisor, air-guide main tube, water seal, steam-water separator, valve etc., can realize percolate in garbage loading embeading heap body
And the joint guide of landfill gas；It is primarily characterized in that, is to ooze wall by leading and realize including percolate, landfill gas；It leads and oozes
Floral tube is evenly distributed on to lead according to a determining deviation to be oozed in wall, is fixed in steel mesh cage and is protected, can be with heap body height
Degree variation lengthens；Leachate collection end pipe, which is arranged on to lead, oozes two ends of wall, and is layered multitube arrangement；Leachate collection supervisor converges
Collect the percolate that each end pipe layering is collected；Air-guide main tube is arranged at the top of air guide floral tube, laterally connects each air guide floral tube respectively；Water
Between envelope is arranged on leachate collection supervisor and leads and ooze wall, prevent gas excessive；Steam-water separator is arranged on air-guide main tube,
Exclude condensate liquid in gas-guide tube.
2. lead ooze wall according to claim 1, it is characterised in that the long-armed digging machine cutting depth of hydraulic clamshell can be passed through
Up to 30 meters, width is 0.8 meter of groove, and top-down lead is formed by the cobble for filling 40~60mm of grain size in the trench
Wall is oozed, can realize percolate and landfill gas layering guide.
3. air guide floral tube according to claim 1, it is characterised in that be made of the perforation of φ 200HDPE pipes, according to a determining deviation
It is evenly distributed on to lead and ooze in wall, and be arranged in steel reinforcement cage, junk-heap body differential settlement and deformation can be effectively prevent to make
It is broken into air guide floral tube.
4. leachate collection end pipe according to claim 1, it is characterised in that be stratified and set on to lead and ooze wall both ends, by pre-
Embedded part oozes wall connection in leading, and sets water seal between leachate collection end pipe and leading oozes wall end, can effectively prevent landfill gas
Into leachate collection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260934.2A CN108149715A (en) | 2017-04-20 | 2017-04-20 | A kind of garbage loading embeading heap body percolate and landfill gas discharge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260934.2A CN108149715A (en) | 2017-04-20 | 2017-04-20 | A kind of garbage loading embeading heap body percolate and landfill gas discharge method |
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| Publication Number | Publication Date |
|---|---|
| CN108149715A true CN108149715A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260934.2A Pending CN108149715A (en) | 2017-04-20 | 2017-04-20 | A kind of garbage loading embeading heap body percolate and landfill gas discharge method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981662A (en) * | 2018-08-22 | 2018-12-11 | 湖南军信环保股份有限公司 | A kind of monitoring system for refuse landfill |
| CN109108041A (en) * | 2018-09-21 | 2019-01-01 | 武汉环投城市废弃物运营管理有限公司 | A kind of floral tube formula french drain and its floral tube connection method for refuse landfill |
| CN113718933A (en) * | 2021-08-25 | 2021-11-30 | 天津市政工程设计研究总院有限公司 | Built-in leachate collection and discharge modularized pump station device in refuse landfill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201334723Y (en) * | 2008-12-17 | 2009-10-28 | 武汉新冠亿碳能源开发有限公司 | Garbage landfill leachate draining and landfill gas collection system |
| KR20100012272A (en) * | 2008-07-28 | 2010-02-08 | 주식회사 건화 | Landfill gas exclusion really structure which uses the waste tire chip |
| CN102191166A (en) * | 2010-03-01 | 2011-09-21 | 北京环卫集团环境研究发展有限公司 | System and method for guiding discharge and collection of landfill gas |
-
2017
- 2017-04-20 CN CN201710260934.2A patent/CN108149715A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100012272A (en) * | 2008-07-28 | 2010-02-08 | 주식회사 건화 | Landfill gas exclusion really structure which uses the waste tire chip |
| CN201334723Y (en) * | 2008-12-17 | 2009-10-28 | 武汉新冠亿碳能源开发有限公司 | Garbage landfill leachate draining and landfill gas collection system |
| CN102191166A (en) * | 2010-03-01 | 2011-09-21 | 北京环卫集团环境研究发展有限公司 | System and method for guiding discharge and collection of landfill gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981662A (en) * | 2018-08-22 | 2018-12-11 | 湖南军信环保股份有限公司 | A kind of monitoring system for refuse landfill |
| CN109108041A (en) * | 2018-09-21 | 2019-01-01 | 武汉环投城市废弃物运营管理有限公司 | A kind of floral tube formula french drain and its floral tube connection method for refuse landfill |
| CN113718933A (en) * | 2021-08-25 | 2021-11-30 | 天津市政工程设计研究总院有限公司 | Built-in leachate collection and discharge modularized pump station device in refuse landfill |
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Application publication date: 20180612 |
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