CN103361262A - Collection method and collection system for landfill biogas - Google Patents
Collection method and collection system for landfill biogas Download PDFInfo
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- CN103361262A CN103361262A CN2013103044774A CN201310304477A CN103361262A CN 103361262 A CN103361262 A CN 103361262A CN 2013103044774 A CN2013103044774 A CN 2013103044774A CN 201310304477 A CN201310304477 A CN 201310304477A CN 103361262 A CN103361262 A CN 103361262A
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- density polyethylene
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- biogas
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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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Abstract
The invention discloses a collection method and a collection system for landfill biogas. The method comprises: firstly diving a landfill into a completed landfill area and a to-be-treated landfill area; excavating latticed grooves at the top of a landfill stack in the completed landfill area; then laying high density polyethylene perforated pipes horizontally along the grooves, and communicating the end tips at the junctions with biogas collection main pipes; then employing a high density polyethylene geomembrane to cover the landfill stack, and starting biogas collecting. The collection system includes a plurality of horizontally arranged high density polyethylene perforated pipes and vertically arranged biogas collection main pipes, the perforated pipes are laid in the grooved excavated at the top of the landfill stack and are connected to the bottoms of the biogas collection main pipes. The top of the landfill stack is covered by the high density polyethylene geomembrane, and the biogas collection main pipes pass through the geomembrane and are in connection with external biogas utilization equipment. The process involved in the invention has a simple process and low investment, the biogas collection effect is good, and the maintenance and operation are simple and convenient.
Description
Technical field
The invention belongs to garbage treatment and dispose the field, relate in particular to a kind of collecting methane method and gathering system of landfill yard.
Background technology
Household refuse landfill sites can produce biogas, and biogas can be collected to store as a kind of energy and recycle.At present, the collecting methane mode that the household refuse landfill sites in large, medium and small cities and towns, the whole nation adopts mostly is air guide gabion collection mode, this mode is collected biogas meter and is revealed certain limitation, and in the process of operation refuse landfill, be difficult to it is safeguarded, in the application practice of refuse landfill, most air guide gabion becomes ornaments at last, the effect of really not playing air guide and reclaiming biogas, this has not only caused the waste of Methane Resources, and has increased the laid down cost of refuse landfill.
In addition, from engineering practice, adopted air guide gabion mode to collect the situation of refuse landfill, if realize the efficient Collection and use of category sludge gas, in the process that landfill heap body is increased, need the air guide gabion is added long process, easily cause the unstable of air guide gabion operation this moment, do not have air guiding function; And because the air guide gabion is vertically to stretch in the garbage loading embeading heap body, it is difficult to more fully landfill biogas be derived, often need to increase the similar devices such as induced draft fan at the end of air guide collection tube this moment, under the air inducing effect of induced draft fan, so that the biogas in the junk-heap body is sucked and draws, further increased so again the energy consumption cost of biogas utilization.Because the air guide gabion vertically stretches in the garbage loading embeading heap body, not only gas port easily stops up, and in case obstruction is safeguarded very difficult.
Therefore, seek collecting methane method and the collection device of the refuse landfill that a kind of air guide is effective, operation is convenient, energy consumption cost is low, for those skilled in the art, seem particularly urgent.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and a kind of technological process is simple, input is little, collecting methane is effective, the garbage category sludge gas of simple and convenient and environmental protection is runed in maintenance collection method and gathering system are provided.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of collection method of garbage category sludge gas, may further comprise the steps:
(1) according to refuse landfill landform and operation situation, refuse landfill is divided into finishes landfill district and pending landfill district;
(2) finish many grooves of garbage loading embeading heap body top area excavation in landfill district, and making the distribution of many grooves be latticed;
(3) prepare many high density polyethylene(HDPE)s (HDPE) perforated pipe, the high density polyethylene(HDPE) perforated pipe is carried out horizontal laying along described groove, adopt the sweating soldering method that the termination of each high density polyethylene(HDPE) perforated pipe in its intersection is communicated with the collecting methane supervisor; Collecting methane supervisor link to each other with biogas storage facilities or biogas utilization equipment;
(4) with high density polyethylene(HDPE) (HDPE) geomembrane the described garbage loading embeading heap body of having finished the landfill district is covered, make the high density polyethylene(HDPE) perforated pipe be positioned at the high-density polyethylene geomembrane below, begin to collect the biogas of refuse landfill.
As a total technical conceive, the present invention also provides a kind of gathering system of garbage category sludge gas, described gathering system subregion is arranged and all is arranged at refuse landfill and finished the landfill district, described gathering system comprises many high density polyethylene(HDPE) perforated pipes and collecting methane supervisor, described high density polyethylene(HDPE) perforated pipe is laid along the direction of approximate horizontal, described collecting methane supervisor lays along roughly vertical direction, described high density polyethylene(HDPE) perforated pipe is laid in the groove of garbage loading embeading heap body top excavation, each high density polyethylene(HDPE) perforated pipe all is communicated to collecting methane supervisor's bottom, described garbage loading embeading heap body top is coated with high-density polyethylene geomembrane, make the high density polyethylene(HDPE) perforated pipe be positioned at the high-density polyethylene geomembrane below, described collecting methane supervisor passes high-density polyethylene geomembrane and links to each other with biogas storage facilities or the biogas utilization equipment of outside.
In the collection method and gathering system of above-mentioned garbage category sludge gas, preferred, be evenly equipped with gas port around the tube wall of described high density polyethylene(HDPE) perforated pipe.The outside of described high density polyethylene(HDPE) perforated pipe preferably is enclosed with geotextile.
In the collection method and gathering system of above-mentioned garbage category sludge gas, preferred, it is latticed that many grooves of described excavation are the peritropous divergence expression in the center of finishing the landfill district.
In the collection method and gathering system of above-mentioned garbage category sludge gas, described groove is preferably dimensioned to be (150mm～300mm) * (150mm～300mm).
In the collection method and gathering system of above-mentioned garbage category sludge gas, described biogas utilization equipment preferably refers to marsh gas power generation equipment.
Compared with prior art, the invention has the advantages that:
1. collection method of the present invention and gathering system utilize landfill yard heap body upper level laying perforated pipe to come the biogas that landfill yard produces is collected, under the prerequisite that does not increase investment, the biogas that landfill is produced obtains abundant Collection and use, more traditional air guide gabion method is collected more easily operation, and cost is lower and efficient is higher.
2. collection method of the present invention and gathering system can be carried out stage construction, district operation according to landform and the operation situation of landfill yard, and difficulty of construction is less, is convenient to operation and management.
3. the collection pipeline of gathering system of the present invention is the top of adopting horizontal laying and being positioned at landfill heap body, and the principle of directly utilizing biogas to rise is fully collected biogas, can effectively simplify installation and the operation maintenance of traditional landfill gas operated device.
4. be coated with the HDPE geomembrane at landfill heap body top in gathering system of the present invention and the collection method, this is conducive to not only guarantee that the biogas that landfill yard produces fully is collected systematic collection and efficient the utilization, and can prevent that the biogas leakage from polluting atmospheric environment.
5. gathering system of the present invention and collection method have been controlled the project construction cost, better economic benefit effectively guaranteeing not need too much capital contribution under the collecting methane prerequisite.
Description of drawings
Fig. 1 is garbage category sludge gas collection stringing orthographic plan in the specific embodiment of the invention.
Fig. 2 is the structural representation (facade) of specific embodiment of the invention middle-high density polyethylene perforated pipe and collecting methane supervisor intersection.
Fig. 3 is the outside view of specific embodiment of the invention middle-high density polyethylene perforated pipe.
Marginal data:
1. collecting methane is responsible for; 2. high density polyethylene(HDPE) perforated pipe; 3. high-density polyethylene geomembrane; 4. pipe interface.
Embodiment
The invention will be further described with concrete preferred embodiment below in conjunction with Figure of description, but protection domain not thereby limiting the invention.
Embodiment:
Adopt gathering system of the present invention and collection method to process to a certain city life garbage landfill, specifically may further comprise the steps:
1. first according to above-mentioned household refuse landfill sites landform and operation situation, this refuse landfill is divided into finishes landfill district and pending landfill district, finished the landfill district and pending landfill district all adopts the Zoning landfill pattern; When this refuse landfill had just been started operation, whole refuse landfill all belonged to pending landfill district, and corresponding A, B, C three districts (referring to Fig. 1) of being divided into;
2. according to the landfill operation requirement, first with landfill of life waste in the A district, after A district garbage loading embeading heap body reach a certain height, stop the landfill to the A district, change and fill out the B district, at this moment, the A district belongs to and finishes the landfill district, B district and C district then belong to pending landfill district;
3. begin that the A district is carried out collecting methane and process, excavate out many grooves of 30cm * 30cm at the top of A district garbage loading embeading heap body, many groove tank circuits behind the excavation form the radial distribution (referring to Fig. 1) around landfill center, A district; Then along continuous straight runs lays high density polyethylene(HDPE) perforated pipe 2 in each bar groove, then set up collecting methane supervisor 1 at landfill center, A district, each high density polyethylene(HDPE) perforated pipe 2 forms radial around collecting methane supervisor 1, each high density polyethylene(HDPE) perforated pipe 2 all adopts tube wall to be evenly equipped with the perforated pipe (referring to Fig. 3) of gas port all around, around high density polyethylene(HDPE) perforated pipe 2, superscribe geotextile, wherein block gas port to prevent that rubbish and sandstone from entering, the collecting methane supervisor 1 same HDPE pipe that adopts; Each high density polyethylene(HDPE) perforated pipe 2 all is communicated to collecting methane supervisor 1 bottom, and adopts hot melt to be connected to form pipe interface 4(referring to Fig. 2 between high density polyethylene(HDPE) perforated pipe 2 and the collecting methane supervisor 1);
4. after above-mentioned pipelining and connecting, above garbage loading embeading A district garbage loading embeading heap body, cover high-density polyethylene geomembrane 3, be used for preventing that biogas that garbage loading embeading heap body produces is in line enters in the atmosphere, guarantee simultaneously above garbage loading embeading heap body, to form highdensity methane accumulation district, so that follow-up collecting methane; But also can prevent entering of rainwater;
5. after above-mentioned pipelining and high-density polyethylene geomembrane cover, A district garbage loading embeading heap body is by self anaerobically fermenting generation biogas, biogas rises in junk-heap body naturally, reach behind the top of junk-heap body under the sealing of high-density polyethylene geomembrane 3, constantly accumulate at the top of garbage loading embeading heap body, along with the continuous rising of biogas concentration, collect and enter among the collecting methane supervisor 1 by the high density polyethylene(HDPE) perforated pipe 2 that gathers at last.
According to the size in each landfill district, also can a plurality of collecting methane supervisors 1 be set according to practical situation, the biogas that collecting methane supervisor 1 is collected is connected between collecting methane by the HDPE transport pipe, and can be used for follow-up marsh gas power generation or the living heat of biogas.In like manner, after the garbage loading embeading in B district, pending landfill district and C district reaches design landfill capacity, carry out collecting methane according to the operation in above-mentioned landfill A district and get final product.
Above-mentioned treatment process has finally formed the gathering system of garbage category sludge gas of the present invention, this gathering system subregion is arranged and all is arranged at refuse landfill and finished the landfill district, this gathering system comprises many high density polyethylene(HDPE) perforated pipes 2 and collecting methane supervisor 1, high density polyethylene(HDPE) perforated pipe 2 along continuous straight runs are laid, collecting methane supervisor 1 vertically lays, high density polyethylene(HDPE) perforated pipe 2 is laid in the groove of garbage loading embeading heap body top excavation, it is latticed that many grooves of excavation are the peritropous divergence expression in the center of finishing the landfill district, groove is of a size of 300mm * 300mm, each high density polyethylene(HDPE) perforated pipe 2 all is communicated to collecting methane supervisor 1 bottom, the garbage loading embeading heap body top of having finished the landfill district is coated with high-density polyethylene geomembrane 3, make high density polyethylene(HDPE) perforated pipe 2 be positioned at high-density polyethylene geomembrane 3 belows, collecting methane supervisor 1 passes high-density polyethylene geomembrane 3 and links to each other with biogas storage facilities or the marsh gas power generation equipment of outside.Be evenly equipped with gas port around the tube wall of high density polyethylene(HDPE) perforated pipe 2, outer wrap has geotextile.
Claims (10)
1. the collection method of a garbage category sludge gas may further comprise the steps:
(1) according to refuse landfill landform and operation situation, refuse landfill is divided into finishes landfill district and pending landfill district;
(2) finish many grooves of garbage loading embeading heap body top area excavation in landfill district, and making the distribution of many grooves be latticed;
(3) prepare many high density polyethylene(HDPE) perforated pipes, the high density polyethylene(HDPE) perforated pipe is carried out horizontal laying along described groove, adopt the sweating soldering method that the termination of each high density polyethylene(HDPE) perforated pipe in its intersection is communicated with the collecting methane supervisor; Collecting methane supervisor link to each other with biogas storage facilities or biogas utilization equipment;
(4) with high-density polyethylene geomembrane the described garbage loading embeading heap body of having finished the landfill district is covered, make the high density polyethylene(HDPE) perforated pipe be positioned at the high-density polyethylene geomembrane below, begin to collect the biogas of refuse landfill.
2. collection method according to claim 1 is characterized in that: be evenly equipped with gas port around the tube wall of described high density polyethylene(HDPE) perforated pipe, the outer wrap of described high density polyethylene(HDPE) perforated pipe has geotextile.
3. collection method according to claim 1 and 2, it is characterized in that: it is latticed that many grooves of described excavation are the peritropous divergence expression in the center of finishing the landfill district.
4. collection method according to claim 3, it is characterized in that: described groove is of a size of 150mm～300mm * 150mm～300mm.
5. the gathering system of a garbage category sludge gas, described gathering system subregion is arranged and all is arranged at refuse landfill and finished the landfill district, it is characterized in that: described gathering system comprises many high density polyethylene(HDPE) perforated pipes and collecting methane supervisor, described high density polyethylene(HDPE) perforated pipe is laid along the direction of approximate horizontal, described collecting methane supervisor lays along roughly vertical direction, described high density polyethylene(HDPE) perforated pipe is laid in the groove of garbage loading embeading heap body top excavation, each high density polyethylene(HDPE) perforated pipe all is communicated to collecting methane supervisor's bottom, described garbage loading embeading heap body top is coated with high-density polyethylene geomembrane, make the high density polyethylene(HDPE) perforated pipe be positioned at the high-density polyethylene geomembrane below, described collecting methane supervisor passes high-density polyethylene geomembrane and links to each other with biogas storage facilities or the biogas utilization equipment of outside.
6. the gathering system of garbage category sludge gas according to claim 5 is characterized in that: be evenly equipped with gas port around the tube wall of described high density polyethylene(HDPE) perforated pipe.
7. the gathering system of garbage category sludge gas according to claim 6, it is characterized in that: the outer wrap of described high density polyethylene(HDPE) perforated pipe has geotextile.
8. according to claim 5, the gathering system of 6 or 7 described garbage category sludge gas, it is characterized in that: it is latticed that many grooves of described excavation are the peritropous divergence expression in the center of finishing the landfill district.
9. the gathering system of garbage category sludge gas according to claim 8, it is characterized in that: described groove is of a size of 150mm～300mm * 150mm～300mm.
10. according to claim 5, the gathering system of 6 or 7 described garbage category sludge gas, it is characterized in that: described biogas utilization equipment refers to marsh gas power generation equipment.
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| CN201310304477.4A CN103361262B (en) | 2013-07-19 | 2013-07-19 | Collection method and collection system for landfill biogas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521981A (en) * | 2015-02-06 | 2016-04-27 | 湖南首创投资有限责任公司 | Control method and system for stink of operating area of municipal solid waste landfill |
| CN112063498A (en) * | 2020-08-21 | 2020-12-11 | 深圳市利赛实业发展有限公司 | Garbage landfill biogas collection system and collection method |
| CN114210688A (en) * | 2021-01-25 | 2022-03-22 | 芜湖凯博环保科技股份有限公司 | Negative pressure cobweb-shaped diffused gas collecting device |
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| 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 |
| CN202081101U (en) * | 2011-05-25 | 2011-12-21 | 河南百川畅银实业有限公司 | Landfill gas collecting system |
| CN203393144U (en) * | 2013-07-19 | 2014-01-15 | 长沙威保特环保科技有限公司 | Refuse landfill biogas collection system |
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2013
- 2013-07-19 CN CN201310304477.4A patent/CN103361262B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202081101U (en) * | 2011-05-25 | 2011-12-21 | 河南百川畅银实业有限公司 | Landfill gas collecting system |
| CN203393144U (en) * | 2013-07-19 | 2014-01-15 | 长沙威保特环保科技有限公司 | Refuse landfill biogas collection system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521981A (en) * | 2015-02-06 | 2016-04-27 | 湖南首创投资有限责任公司 | Control method and system for stink of operating area of municipal solid waste landfill |
| CN112063498A (en) * | 2020-08-21 | 2020-12-11 | 深圳市利赛实业发展有限公司 | Garbage landfill biogas collection system and collection method |
| CN112063498B (en) * | 2020-08-21 | 2021-07-27 | 深圳市利赛实业发展有限公司 | Garbage landfill biogas collection system and collection method |
| CN114210688A (en) * | 2021-01-25 | 2022-03-22 | 芜湖凯博环保科技股份有限公司 | Negative pressure cobweb-shaped diffused gas collecting device |
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| CN103361262B (en) | 2014-08-06 |
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Address after: 410005, executive room, Zhongtian Plaza, 766 Wuyi Road, Furong district, Hunan, Changsha, 11027 Patentee after: Changsha Wei Baote environmental protection Science and Technology Co., Ltd. Address before: 410005, executive room, Zhongtian Plaza, 766 Wuyi Road, Furong district, Hunan, Changsha, 11027 Patentee before: Changsha Well-Point Environment Protection Science & Technology Co., Ltd. |
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Address after: 410000 Hunan province Changsha Changsha city high tech Development Zone No. 166 yuan Lu Valley R & D Office No. 101 three floor Patentee after: Hunan Beikong Wei: environmental Polytron Technologies Inc Address before: 410005, executive room, Zhongtian Plaza, 766 Wuyi Road, Furong district, Hunan, Changsha, 11027 Patentee before: Changsha Wei Baote environmental protection Science and Technology Co., Ltd. |