CN100393865C - Sunk cone well pile for garbage category sludge gas collection well construction and its construction method - Google Patents
Sunk cone well pile for garbage category sludge gas collection well construction and its construction method Download PDFInfo
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- CN100393865C CN100393865C CNB2005101018889A CN200510101888A CN100393865C CN 100393865 C CN100393865 C CN 100393865C CN B2005101018889 A CNB2005101018889 A CN B2005101018889A CN 200510101888 A CN200510101888 A CN 200510101888A CN 100393865 C CN100393865 C CN 100393865C
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 31
- 239000010802 sludge Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000002699 waste material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- 208000035126 Facies Diseases 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241001459904 Conus regius Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000010925 yard waste Substances 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a sunk cone well pile for the construction of garbage landfill sludge gas collecting wells, which comprises a pile cover, a pile cylinder and a pile head, wherein the pile head comprises a cone, and the pile cylinder presents a hollow tubular shape; the basal diameter of the cone is slightly larger than the cross section diameter of the pile cylinder, and the cone is connected with one end of the pile cylinder; the outer diameter of the pile cover is slightly larger than that of the pile cylinder, and the pile cover is covered at the other end of the pile cylinder. The present invention also discloses a method for constructing sludge gas collecting wells by the sunk cone well pile, which comprises the following steps: 1) an impact type pile driver is erected; 2) the sunk cone well pile is vertically positioned by a derrick of the impact type pile driver, the pile head faces down, the pile cylinder is connected with the bottom face of the pile head, and the pile cover is covered at the top end of the pile cylinder; 3) the impact type pile driver is started up, and the sunk cone well pile is driven into a garbage layer; 4) the pile cover is taken off, and a sludge gas collecting pipe is put in the center of the pile cylinder; 5) filling materials are poured into the pile cylinder to fix the sludge gas collecting pipe for keeping a gas vent free; 6) the pile cylinder is suspended away from the garbage layer, the pile head is separated from the pile cylinder and is sunk into the bottom of a sludge gas collecting well, and the sludge gas collecting well is built.
Description
[technical field]:
The present invention relates to a kind of sludge gas collection well construction method when garbage category sludge gas is collected.
[background technology]:
Along with fast development of Chinese economy, a large amount of population is leapt up into the city, and the scale in city and circle, territory constantly enlarge, and process of urbanization is at a tremendous pace.We are when enjoying prosperity, also just stand living environment and constantly worsening the consequence of bringing, urban population is increased sharply on the one hand, domestic refuse also increases severely, statistics according to State Environmental Protection Administration, the China town dweller produces about 500 kilograms of quantity of refuse per capita per year, and 2002 produce 1.36 hundred million tons of rubbish total amounts per year, and it is 9% that rubbish produces annual growth.The treatment process of China's municipal wastes is at present also relatively backward, its main method is a landfill, accounts for more than 95% of whole waste disposal method, burns only to account for seldom part, thereby the land resources that causes being used for landfill waste is more and more in short supply, and rubbish and people strive for that spatial contradiction more and more intensifies; On the other hand, the burying method that China adopted is the method for arbitrarily stacking basically, without harmless treatment, along with the scale and the circle, territory in city constantly enlarges, originally the refuse landfill that was in urban fringe is just becoming new down town, and the refuse landfill pollution problem is just becoming a difficult problem anxious to be solved.
Usually, contain organism such as a large amount of fruits and vegetables skins, swill, dish leaf, paper, fur in the domestic waste; The city organic substances such as the leaf branch that also contains some amount in the rubbish that produces, grass of keeping a public place clean; Therefore in entering the rubbish of landfill yard, contain quite abundant organic substance.In a single day rubbish enter landfill yard, and the decomposition course of microorganism has just begun: the first step is that oxygen consumption decomposes, and consumes the oxygen in the landfill yard, produces a large amount of heat; Second step was carried out anaerobic digestion, produced biogas.As the bio anaerobic degradation process of rubbish itself, its final product mainly is CO
2And CH
4Rubbish is by the initial stage of landfill, and it mainly is CO that organism decomposes the waste gas that produces
2, after after a while, the methane composition in the gas rises gradually, and the aerogenesis peak generally will just occur after garbage loading embeading 3～5 years, and CH in the exhaust gas discharged
4(CH in the air can set off an explosion when content is higher
4The limits of explosion scope be 5～15V%).Therefore, the collection and treatment of carrying out landfill gas is a very important job.Gaseous constituent changes with the landfill time limit and the different of component of refuse with concentration.The following direct harm of the general existence of undressed refuse landfill:
1, the foul gas (claiming biogas again) that constantly distributes of refuse tip mainly is made up of methane and other toxic and harmfuls.Methane is a kind of fuel efficiently, if but deal with improperly, discharge in nearly Residential areas, in case it is inflammable and explosive to meet with Mars, bring threat for life and property;
2, methane also is the very strong gas of a kind of Greenhouse effect (be carbonic acid gas 21 times), if in a large number to aerial directly discharging, cause Greenhouse effect easily, the atmospheric environment that causes the mankind to depend on for existence degenerates, therefore, United Nations just requires the take measures discharging of all kinds of greenhouse gases of mandatory minimizing of national governments by " Kyodo Protocol book ".
At present domestic newly-built refuse landfill is required to set up the collecting methane system, the biogas of recovery can be used as fuel and directly use, and also can be used for generating.The collecting methane system comprises sludge gas collection well, collecting pipe, gas-holder, collection and confinement of gases pumping plant etc.The construction of sludge gas collection well is the key and the difficult point of whole collecting methane system, does not have effective method at present; A kind of is to take the method excavated, excavates at landfill yard with excavator, and the rubbish that digs out needs to stack in addition, when construction, the continuous effusion biogas of meeting works the mischief to the workmen, and engineering accident also easily takes place, the thickness of landfill yard rubbish generally reaches tens of rice, along with the degree of depth strengthens, it is next increasing to excavate the construction difficulty, and therefore this method is built and collected well, difficulty of construction is big, the cycle is long, and manpower and materials have high input.Building construction problem for solve collecting well, having occurred some special garbage category sludge gas well excavating equipments abroad, but this equipment not only price is high, and because bulky, transportation inconvenience, it is very inconvenient to enter refuse landfill.Prior art also attempts building the collection well with oscillatory type stake-man method, but because refuse material is formed complexity, waste layer has certain elasticity, and the sludge gas collection well hole diameter is bigger, makes this constructional method be difficult to prove effective.
In sum, because very big to the investment cost of category sludge gas collection system, local finance are difficult to bear, and domestic local finance are difficult to bear, and are difficult at home apply.Therefore, the biogas of China's city refuse landfill is not almost collected, and harm is conspicuous, not only causes odor pollution, brings inflammable and explosive threat, and has wasted a large amount of utilizable energies source; Even there is the only a few city to handle, also be to adopt the very huge form of construction work of above-mentioned investment to handle, the economic benefit of investment is very poor.
[summary of the invention]:
Purpose of the present invention is exactly in order to overcome the above problems, and a kind of input cost is low, social benefit is high garbage category sludge gas collection well construction method and construction are provided.
The invention discloses the garbage category sludge gas collection well construction method of garbage category sludge gas collection well construction of using with settled cone well pile, the garbage category sludge gas collection well construction settled cone well pile, comprise stake lid, stake tube, pile crown, described pile crown comprises cone, described stake tube is a hollow tubular, described cone bottom surface slightly larger in diameter is in described stake tube diameter of section, joins with an end of described stake tube; Described stake lid external diameter is slightly larger than described stake tube external diameter, is used to be covered on the other end of described stake tube; Constructional method comprises the steps:
1) sets up collision type stake machine;
2) stake machine pylon is the settled cone well pile vertically orient, pile crown down, the stake tube joins with the pile crown bottom surface, stake is covered on a stake top;
3) start the stake machine, settled cone well pile is squeezed in the waste layer with stake machine hammer;
4) take off the stake lid, the biogas effuser that is provided with gas port is put into the stake tube;
5) the monomer maximum cross-section is bigger slightly than the gas port on biogas effuser stopping composition is poured in the stake tube, and fixedly the biogas effuser is in the central authorities of stake tube;
6) the stake tube is hung waste layer, pile crown separates with the stake tube and sinks and stay the shaft bottom, finishes the construction of a sludge gas collection well.
Above-mentioned constructional method, the rubble that the preferred maximum secting area of the stopping composition in the described step 5) is bigger slightly than gas port.
Because adopted above scheme, its effect is: 1) the present invention utilizes fully again to the biogas realization that refuse landfill produces, and has stopped the pollution that direct discharging causes surrounding enviroment.2) construction process of this constructional method need not excavate landfill yard, therefore can not cause new pollution, and is safe and reliable, simple efficient, construction cost, the equipment purchasing expense that drops into is lower than conventional treatment process widely, and the workmen significantly reduces, so also reduces greatly on the running cost.3) constructional method of the present invention and preparation of construction, biogas well excavate and effuser is laid in conjunction with carrying out, and have accelerated the speed of application of collecting methane system building greatly, have significantly shortened the construction period.
Well stake of the present invention, simple in structure, realize that easily cost is low.
Use constructional method of the present invention and preparation of construction, because input cost reduces significantly, it is the sixth that excavates the arrangement and method for construction cost, and the construction period shortens significantly, make the comprehensive regulation of refuse landfill drop into low, instant effect also can take effect as early as possible to the utilization of the renewable energy resources, to city, country, and administer and energy development has secular, immeasurable promoter action to global environment.
[description of drawings]:
Fig. 1 is the structural representation of garbage category sludge gas collection system;
Fig. 2 is the diagrammatic cross-section of the settled cone well pile of the embodiment of the invention one along axial line;
Fig. 3 is the stake lid structural representation of the settled cone well pile of the embodiment of the invention one.
Fig. 4 is the stake barrel structure synoptic diagram of the settled cone well pile of the embodiment of the invention one.
Fig. 5 is the pile crown structural representation of the settled cone well pile of the embodiment of the invention one.
Fig. 6 is the pile crown structural representation of the settled cone well pile of the embodiment of the invention two.
Fig. 7 is the pile crown structural representation of the settled cone well pile of the embodiment of the invention three.
Fig. 8 is the pile crown structural representation of the settled cone well pile of the embodiment of the invention four.
Fig. 9 is the settled cone well pile stake lid structural representation of the embodiment of the invention five.
Figure 10 is the diagrammatic cross-section of the settled cone well pile of the embodiment of the invention five along axial line.
Figure 11 is for burying sludge gas collection well structural representation behind the effuser underground.
[embodiment]:
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one: this example is a preferred embodiment.
When setting up the garbage category sludge gas collection system, at first need on the refuse tip, get the sludge gas collection well of some amount, be used for landfill biogas effuser.Please refer to shown in Figure 10ly, this collection well need go deep in the waste layer, the therefore particular case of looking landfill yard, and it is general relevant with the degree of depth of waste layer to collect well depth; Then the area with landfill yard is relevant to collect the quantity of well, generally is that the 40 meters spacings of being separated by are provided with a collection well.As shown in Figure 1, each is collected and buries vertical biogas effuser 10 in the well underground, and each vertical biogas effuser is connected with lateral transfer pipe 11, is delivered to gas-holder by fan again.
The manufacture process of sludge gas collection well: set up collision type stake machine on landfill yard, settled cone well pile adopts the garbage category sludge gas collection settled cone well pile of the present invention according to the design of landfill yard geology characteristic., be this a kind of embodiment that collects settled cone well pile please, comprise stake lid 1, stake tube 2, pile crown 3 in conjunction with Fig. 2-shown in Figure 5, as shown in Figure 3, the stake lid comprises two sections cylinders that link to each other with one heart, and the diameter of lower cylindrical is slightly smaller than stake tube internal diameter, and the diameter of top cylinder is a bit larger tham the external diameter of stake tube.As shown in Figure 4, the stake tube is a cylinder type hollow steel pipe, 1 meter of caliber, and the top of stake tube is provided with web member 4, and this web member can be hook or suspension ring etc., is used for a machine stake tube is hung from landfill yard landfill layer.Stake is covered on the stake tube, and it is fastening that stake lid and stake tin can adopt web member 4 to carry out, also can be fastening; The height of stake tube can be determined flexibly according to the degree of depth of landfill yard waste layer.As shown in Figure 5, pile crown integral body is arrow shaped, and the front portion is a cone 31, and facies basialis pyramidis and cylinder boss 32 join, and the cylinder boss center of circle is on the cone axis heart line, and the facies basialis pyramidis slightly larger in diameter is in stake tube diameter, and stake tube slightly larger in diameter is in the cylinder boss diameter; The stake jacket casing is located at outside the cylinder boss of pile crown, joins with facies basialis pyramidis.During construction, with the position of mechanical manipulator restriction settled cone well pile, stake machine weight applies vertical reactive force to settled cone well pile stake lid under motor drives on the frame of stake machine, and mechanical manipulator applies guide effect to settled cone well pile, to guarantee to collect the direction of motion of settled cone well pile.Settled cone well pile is under the weight bump, under the acting in conjunction of impact force, hammer body and settled cone well pile self gravitation, the conical surface of rubbish by pile crown by to around extruding, the suffered resistance of whole settled cone well pile is reduced greatly, settled cone well pile can be fast, be deep in the waste layer effortlessly.Because the constitutional features of pile crown, the round platform of stake tube by pile crown spacing neither can break away from the two and joins, and also can not produce dislocation etc.
After the stake tube gos deep into waste layer and reaches target depth, remove the stake lid, please refer to shown in the accompanying drawing 11, on landfill yard ground, form " well " that pushes out by the stake tube this moment, the PVC effuser 8 of the gas port that gathers is put into " well " along stake tube axle center, the fixed set tracheae will be gone in the stake tube again through rubble 6 landfills that clean and select.
After effuser is fixed, adopt loop wheel machine to connect the suspension ring or the hook 4 of stake tube, the stake tube is extracted from waste layer 7, because pile crown is not to fixedly connected with the stake tube, pile crown is left on the shaft bottom.And stake tube and stake lid can reuse.The length of effuser is decided according to well depth, be covered with gas port on the length of one end 2/3rds, this section of effuser isolated by rubble and rubbish that maximum secting area is slightly larger than gas port, owing to there is abundant gap between the rubble, biogas is collected into effuser by the gap.
After pouring rubble fixed set tracheae into, remainder covered last layer sealing ply 5 by the well head of about 1/3rd well depths of rubble landfill, the sealing layer is selected the high viscosity clay for use, compacting compresses, this clay seam can make biogas can not overflow and directly sky be discharged, and improves the effective collection to biogas.
According to constructional method of the present invention, utilize preparation of construction of the present invention, built sludge gas collection well, buried vertical effuser underground after, again each effuser is connected with horizontal transfer lime, connect gas-holder more successively.
Embodiment two: as shown in Figure 6, this routine pile crown offers annular recesses 33 in the bottom surface of cone 31, this annular recesses external diameter is slightly larger than or equals the external diameter of stake tube, and the annular recesses internal diameter is slightly less than or equals the internal diameter of stake tube, on the axis that is centered close to cone of annular recesses.During construction, stake tube one end embeds in the annular recesses, and under bump and action of gravity, settled cone well pile is deep in the waste layer; When hanging the stake tube after placing the biogas effuser, because the bottom surface of pile crown cone is slightly larger than the external diameter of stake tube, under drag effect, pile crown is left on the shaft bottom; And a stake tube external diameter is slightly less than pile crown, by the extruding of pile crown to waste layer, makes the stake tube go deep into being subjected to hardly after the waste layer extruding of rubbish, and therefore when hanging the stake tube, the suffered resistance of stake tube is little, is easy to be hung waste layer.
Embodiment three: as shown in Figure 7, the protruding wall 35 of outer ring-like that this routine pile crown comprises cone 31, join with facies basialis pyramidis and in the protruding wall 34 of ring-type, protruding wall of outer ring-like and the interior protruding wall of ring-type surround and form an annular recesses 33, the annular recesses external diameter is slightly larger than or equals the external diameter of stake tube, and the internal diameter of annular recesses is slightly less than or equals the internal diameter of stake tube.During construction, stake tube one end embeds in the annular recesses.
Embodiment four: as shown in Figure 8, this routine pile crown is on the basis of embodiment one, and the root that joins in cylinder boss 32 and cone bottom surface encircles cylinder boss and offers an annular recesses 33, stake tube one end embeds in the annular recesses, can play better positioning action.
Embodiment five: as Fig. 9, shown in Figure 10, the difference of this example and embodiment one is, the stake lid 1 of this example comprises circular bottom wall, sidewall, and sidewall and diapire are perpendicular and stretch along the circumferential same direction of diapire edge; The internal diameter of sidewall is more than or equal to stake tube external diameter.The spacing stake lid that makes of sidewall is sheathed on the stake tube.
Claims (2)
1. use the garbage category sludge gas collection well construction method of garbage category sludge gas collection well construction with settled cone well pile; Described garbage category sludge gas collection well construction settled cone well pile, comprise stake lid (1), stake tube (2), pile crown (3), described pile crown comprises cone, and described stake tube is a hollow tubular, described cone bottom surface slightly larger in diameter is used for joining with an end of described stake tube in described stake tube diameter of section; Described stake lid external diameter is slightly larger than described stake tube external diameter, is used to be covered on the other end of described stake tube; Constructional method comprises the steps:
1) sets up collision type stake machine;
2) stake machine pylon is the settled cone well pile vertically orient, pile crown down, the stake tube joins with the pile crown bottom surface, stake is covered on a stake top;
3) start the stake machine, settled cone well pile is squeezed in the waste layer by the machine hammer;
4) take off the stake lid, the biogas effuser that is provided with gas port is put into the stake tube;
5) the monomer maximum cross-section is bigger slightly than the gas port on biogas effuser stopping composition is poured in the stake tube, and the biogas effuser is fixed on stake tube central authorities;
6) the stake tube is hung waste layer, pile crown separates with the stake tube and sinks and stay the shaft bottom, finishes the construction of a sludge gas collection well.
2. constructional method as claimed in claim 1 is characterized in that: the stopping composition in the described step 5) is a rubble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101018889A CN100393865C (en) | 2005-12-07 | 2005-12-07 | Sunk cone well pile for garbage category sludge gas collection well construction and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101018889A CN100393865C (en) | 2005-12-07 | 2005-12-07 | Sunk cone well pile for garbage category sludge gas collection well construction and its construction method |
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| CN1830849A CN1830849A (en) | 2006-09-13 |
| CN100393865C true CN100393865C (en) | 2008-06-11 |
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| CNB2005101018889A Expired - Fee Related CN100393865C (en) | 2005-12-07 | 2005-12-07 | Sunk cone well pile for garbage category sludge gas collection well construction and its construction method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100948027B1 (en) * | 2008-12-31 | 2010-03-19 | 수도권매립지관리공사 | Gas discharging apparatus for waste reclaimed land having a gas gathering apparatus in the uppest layer |
| 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 |
| CN102359100B (en) * | 2011-07-28 | 2013-07-17 | 中铁二局股份有限公司 | Marsh gas treatment technology for large garbage landfill with complex geology |
| CN105318339A (en) * | 2015-05-28 | 2016-02-10 | 南京信息工程大学 | Landfill gas collecting device and method for landfill |
| CN110293109B (en) * | 2019-06-27 | 2022-03-11 | 山东红枫环境能源有限公司 | Construction method of landfill gas guide and drainage gas collecting well |
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