CN102441552A - High-efficiency biogas-producing domestic waste landfill - Google Patents
High-efficiency biogas-producing domestic waste landfill Download PDFInfo
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- CN102441552A CN102441552A CN2011104413584A CN201110441358A CN102441552A CN 102441552 A CN102441552 A CN 102441552A CN 2011104413584 A CN2011104413584 A CN 2011104413584A CN 201110441358 A CN201110441358 A CN 201110441358A CN 102441552 A CN102441552 A CN 102441552A
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
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Abstract
The invention relates of a high-efficiency biogas-producing domestic waste landfill. According to the invention, an existing garbage leachate collection system is adopted; a whole domestic waste landfill is subject to unit dividing; landfill gas collection systems are horizontally paved; and waste pile water content is controlled. A method comprises steps that: landfill units with certain specifications are configured; unit dividing is carried out buy using soil separating levees; seepage prevention, leachate collection, discharging guiding and biogas collection systems of the landfill units are relatively independent; hydrolysis and acidification are carried out upon the landfill units; landfill gas collection systems are arranged in the landfill units in which hydrolysis and acidification are finished; the landfill gas collection systems are connected with existing landfill gas vertical well collection systems; with collecting pipes or grooves, the landfill gas collection systems can be effectively separated from leachate collection systems; with the horizontal landfill gas collection systems, under the effect of negative pressures, the range of gas catching zones around the vertical wells is widened, and the landfill gas can be pumped from the landfill; finally, waste landfilling is carried out on the units with the paved horizontal landfill gas collection systems, until landfill capacity is completed.
Description
Technical field
The present invention relates to the household refuse landfill sites technology, belong to the environmental protection field, especially a kind of efficient product natural pond type household refuse landfill sites.
Background technology
The consumer waste filling and embedding technology is comparatively ripe at present, but remains in following problem:
1, consumer waste filling and embedding heap body stabilized speed is slower, and generally needs 15 years even longer time stablize, for the utilization of follow-up soil has brought adverse effect;
2, the anaerobic condition of consumer waste filling and embedding heap body keeps not good, causes landfill heap body to be unfavorable for producing natural pond and collecting methane;
3, domestic house refuse content of organics is too high, even be not the technology of landfill process with the collecting methane at home at present;
4, the unordered discharging of biogas can aggravate greenhouse effects, and biogas is not effectively utilized with utilization rate generally on the low side as resource simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of efficient product natural pond type household refuse landfill sites, quicken collecting methane.
The object of the invention realizes through following technical proposals: efficiently produce natural pond type household refuse landfill sites; Have antiseepage, leachate collection and guide system; Characteristics are that whole household refuse landfill sites is carried out dividing elements, level laying landfill gas gathering system and controls the junk-heap body moisture content, and its method is:
(1), the dividing elements of said household refuse landfill sites is by three～four months about 90,000 tons of landfill units that pile 2～5 meters height of quantity of refuse; Carry out unit separation with the soil property separation levee, antiseepage between each landfill unit, leachate collection and guide and collecting methane system are relatively independent;
(2), described collecting methane system is after a landfill unit reaches the corresponding landfill degree of depth, carries out the centre at once and covers, and on waste layer, covers the clay of 10cm～50cm and the HDPE film of 0.5mm～1.5mm; Film and film welding are closely knit, and the film periphery is packed in bag soil pressure in fact, realizes the sealing fully of unit; After accomplishing covering; In 1 year, no longer this unit is continued landfill waste, wherein, the effect of argillic horizon is for avoiding the uneven of waste layer surface and having sharp objects to sting empty HDPE film;
(3), after the unit accomplish to cover 1 year, this moment, landfill unit was accomplished the hydrolysis acidification stage basically, and had accomplished the settling amount more than 80%; At this moment, raise the HDPE film that has covered, horizontal landfill gas feeder is installed; And couple together with existing landfill gas vertical shaft gathering system; This horizontal landfill gas feeder makes landfill gas gathering system and leachate collection system realize effectively separating, and helps the collection and the recovery/processing of rubbish landfill gas, and this horizontal landfill gas gathering system expansion vertical shaft periphery under suction function is caught the scope of gas area; Thereby can initiatively landfill gas be released from landfill yard, solve initial stage collecting methane defect of insufficient;
(4), on the landfill unit that lays horizontal landfill gas feeder, continue landfill waste, in the middle of other capping units with reference to step (2), until the use of final completion landfill storage capacity.
Horizontal landfill gas gathering system is compared with vertical shaft; Have the easy-to-install characteristics; Consider that particularly vertical shaft exists by the potential impact of water logging, might reduce landfill and reduce the possibility of landfill gas generation and collection rate, in addition; Moisture content can be effectively controlled, the combination of the vertical guide of employing prior art and the horizontal guide of new technology.
On the such scheme basis, described horizontal landfill gas feeder is under the conventional garbage layer, to dig 2～5 meters the degree of depth, repave the rubble 40cm of particle diameter 32～100mm after; Lay about 30 meters～40 meters long perforated PVC percolate discharge guiding pipes to the landfill yard edge; Guarantee the timely guide of percolate, this percolate discharge guiding pipe is 3% gradient to the landfill yard edge, re-lays the rubble of particle diameter 32～100mm of 60cm; The horizontal landfill gas collecting pipe of nested type is installed; The landfill gas collecting pipe then, is laid the rubble of particle diameter 32～100mm of 40cm once more to the laying of the horizontal gatherer of landfill yard lopsidedness 3% completion; Original waste layer of 0.6m to 3.4m is gone up in last covering again, and compacting.
On the such scheme basis, 50 meters at the interval of described adjacent level formula landfill gas collecting pipe or groove.
On the such scheme basis; Described suction function be landfill unit around bury house steward underground; Link to each other with other tie points with the horizontal tube joint in the house steward both sides, house steward links to each other with the joint of all horizontal collecting pipe/grooves and vertical tube connector through flow control valve, is responsible for to link to each other with a central point the most at last; Air blast through central point is extracted landfill gas out under vacuum pressure in landfill yard, promoted product natural pond rate and collecting methane rate.
On the such scheme basis, the described person in charge is arranged on beyond the landfill unit region, have two-layer or two-layer more than the landfill unit of horizontal landfill gas collecting pipe/groove, the horizontal displacement between horizontal up and down collecting pipe/groove is about 25 meters.
The present invention is the complete household refuse landfill sites landfill of a cover, produces the complex art of natural pond, biogas and leachate collection, has effectively overcome the deficiency of prior art, and is long stabilization time because of fully taking into account consumer waste filling and embedding heap body; Be provided with the system architecture of taking out landfill gas under percolate guide and the suction function; Effectively prevent to pile the inner ponding of body, the control moisture content helps the stable of junk-heap body 30～60%; The biogas of the landfill yard at initial stage is beneficial to and produces the natural pond, even also can in time be collected.
Description of drawings
Accompanying drawing 1 is vertical cross-sectional schematic of horizontal landfill gas feeder;
Accompanying drawing 2 is the schematic top plan view of landfill unit of the present invention;
Label among the figure:
10-landfill unit;
101-horizontal landfill gas feeder system; 102-original waste layer;
1-metalling; 2-perforated PVC percolate discharge guiding pipe;
3-vertical tube connector;
4-horizontal landfill gas collecting pipe;
The horizontal landfill gas collecting pipe in 41-upper strata;
The horizontal landfill gas collecting pipe of 42-lower floor;
5-HDPE collects house steward; 9-central station.
The specific embodiment
The present invention efficiently produces natural pond type household refuse landfill sites; Comprise antiseepage of the prior art, leachate collection and guide system; Characteristics are that whole household refuse landfill sites is carried out dividing elements, level laying landfill gas gathering system and controls the junk-heap body moisture content; The assurance junk-heap body is stable, and its method is:
(1), based on the operation scale and the place situation of household refuse landfill sites; Pile a height more than 5 meters by three～four months quantity of refuses; The production operation progress of dividing the landfill unit size and arranging landfill yard is an example with the household refuse landfill sites of 1000 tons of day disposals of refuse, and quantity of refuse was about 90,000 tons in three months; About 11.25 ten thousand sides of by volume; Divide by about 5 meters of the landfill degree of depth, the about 2.25 ten thousand square metres landfill unit of area, and carry out unit separation with the soil property separation levee, the antiseepage between each landfill unit, leachate collection and guide and collecting methane pipeline are all relatively independent;
(2), after a landfill unit reaches the corresponding landfill degree of depth, carry out the centre at once and cover, on waste layer, cover the clay of 10cm and the HDPE film of 0.5mm; The clay of 10cm mainly act as to be avoided the uneven of waste layer surface and has sharp objects to pierce through the HDPE film; Overlap joint is closely knit with the welding of single track machine between film and the film, and the film periphery is packed in bag soil pressure in fact, realizes the sealing fully of landfill unit; After accomplishing covering, in 1 year, no longer this landfill unit is continued landfill waste;
(3), after landfill unit accomplish to cover 1 year, this moment, landfill unit was accomplished the hydrolysis acidification stage basically, and had accomplished the settling amount more than 80%; Raise the HDPE film that has covered this moment, and horizontal landfill gas feeder system is installed, and couple together with existing landfill gas vertical shaft gathering system; Feeder of the present invention can make landfill gas gathering system and leachate collection system realize effectively separating, and helps the collection and the recovery/processing of rubbish landfill gas, and horizontal landfill gas gathering system expansion vertical shaft periphery under suction function is caught the scope of gas area; Thereby can on one's own initiative landfill gas be released from landfill yard; Compare with vertical shaft, horizontal landfill gas gatherer has the easy-to-install characteristics, considers that particularly vertical shaft exists by the potential impact of water logging; Might reduce landfill gas generation and collection rate; Horizontal landfill gas gatherer is effective especially, and therefore, design and the horizontal landfill gas gathering system of laying are the keys that realizes quickening to produce natural pond type household refuse landfill sites;
(4), the suction function described in the step (3) is to link to each other with other tie points with horizontal joint in the competent system both sides; Competent system should be buried underground around around the landfill unit, links to each other with vertical joint with all levels through flow control valve, is responsible for to link to each other with a central point the most at last; Air blast through central point is extracted landfill gas out under vacuum pressure in landfill yard; The person in charge should be arranged on beyond the landfill unit region as far as possible, so that the influence that reduces sedimentation as far as possible and produced, competent system also need increase the insulation measure; Reducing the freezing influence that is produced as far as possible, as select for use the HDPE pipe as collecting house steward;
(5), on the landfill unit that lays horizontal landfill gas gathering system, continue landfill waste, in the middle of other capping units with reference to above-mentioned steps (2), until the use of final completion landfill storage capacity.
Be (the construction pipeline name is L, H) shown in vertical cross-sectional schematic of horizontal landfill gas feeder like Fig. 1; From digging 2 meters to 5 meters the degree of depth (digging the degree of depth accurately down should confirm according to the situation of conduit slope and length and available excavating equipment) under the conventional garbage layer, in the present embodiment, the wide 100cm of horizontal landfill gas gathering system; Degree of depth 140cm; Bottom is spread particle diameter 32～100mm, after the degree of depth is the bottom metalling 1 of 40cm, lays about 30～40 meters long perforated PVC percolate discharge guiding pipe 2 to the landfill yard edge; Percolate discharge guiding pipe 2 is 3% gradient and lays to the landfill yard edge; Re-lay the metalling 3 of particle diameter 32～100mm of about 60cm, the horizontal landfill gas collecting pipe 4 of the nested type of packing into, horizontal landfill gas collecting pipe 4 is to the landfill yard lopsidedness; Be and be no less than 3% the gradient, buried the condensate liquid that the gas collecting pipe dams or the discharging of percolate with convenient.And, prevent horizontal landfill gas collecting pipe 4 water inlets, last, make progress again and continue to lay the metalling of degree of depth 40cm particle diameter 32～100mm, cover the original waste layer 6 that goes up 0.6m～3.4m again, and compacting, bury gas collecting pipe 4 by level and constitute horizontal gatherer.
Shown in the schematic top plan view of Fig. 2 landfill unit of the present invention; Be the horizontal gatherer that has two-layer horizontal landfill gas feeder to constitute; The horizontal gatherer of these receipts has been considered the recovery of landfill yard outer ledge landfill gas, and considers to utilize center sub in the middle of each horizontal joint, to gather gas, according to the floor plan situation of landfill unit 10; Horizontal gatherer has two layers of horizontal landfill gas collecting pipe in the present embodiment; The interval of adjacent level landfill gas collecting pipe 4 with layer should be about 50 meters, the horizontal displacement between the horizontal landfill gas collecting pipe 42 of the horizontal landfill gas collecting pipe 41 in upper strata and lower floor about 25 meters, house steward HDPE 5 around landfill unit 10 regions in addition around; Link to each other with vertical tube connector 3 (for optional structure) joint through the horizontal landfill gas collecting pipe 4 of flow control valve and all; HDPE collects house steward 8 and finally links to each other with a central station 6, is provided with air blast and torch station in this central station 6, under vacuum pressure, landfill gas is in time extracted out in landfill yard.
Claims (6)
1. efficiently produce natural pond type household refuse landfill sites, the gathering system of percolate arranged, it is characterized in that:
Whole household refuse landfill sites is carried out dividing elements, level laying landfill gas gathering system and controls the junk-heap body moisture content, wherein,
(1), the dividing elements of said household refuse landfill sites is by 90,000 tons of landfill units that pile 2～5 meters height of three～four months quantity of refuses; Carry out unit separation with the soil property separation levee, antiseepage between each landfill unit, leachate collection and guide and collecting methane system are relatively independent;
(2), described collecting methane system is after a landfill unit reaches the corresponding landfill degree of depth; Carry out the centre at once and cover, on waste layer, cover the clay of 10cm～50cm and the HDPE film of 0.5mm～1.5mm, film and film welding are closely knit; The film periphery is packed in bag soil pressure in fact; Realize the sealing fully of unit, after completion covers, in 1 year, no longer this unit is continued landfill waste;
(3), accomplish covering after 1 year in the unit; Raise the HDPE film that has covered; Horizontal landfill gas feeder system is installed, and couples together with existing landfill gas vertical shaft gathering system, this horizontal landfill gas feeder system realizes effectively separating with leachate collection system; This horizontal landfill gas feeder system expansion vertical shaft periphery under suction function is caught the scope of gas area, and landfill gas is released from landfill yard;
(4), on the landfill unit that lays horizontal landfill gas feeder system, continue landfill waste, capping units are with reference to step (2), until the use of final completion landfill storage capacity in the middle of other.
2. efficient product according to claim 1 natural pond type household refuse landfill sites; It is characterized in that: described horizontal landfill gas feeder is under the conventional garbage layer, to dig 2～5 meters the degree of depth, repave the rubble 40cm of particle diameter 32～100mm after, lay about 30 meters～40 meters long perforated PVC percolate discharge guiding pipes to the landfill yard edge; This percolate discharge guiding pipe is 3% gradient to the landfill yard edge; Upwards lay the rubble of particle diameter 32～100mm of 60cm again, the horizontal landfill gas collecting pipe of nested type is installed, this horizontal landfill gas collecting pipe is accomplished the laying of horizontal gatherer to landfill yard lopsidedness 3%; Then; Lay the rubble of particle diameter 32～100mm of 40cm once more, original waste layer of 0.6m to 3.4m is gone up in last covering again, and compacting.
3. efficient product according to claim 1 and 2 natural pond type household refuse landfill sites is characterized in that: described adjacent level formula landfill gas collecting pipe be spaced apart 50 meters.
4. efficient product according to claim 1 natural pond type household refuse landfill sites; It is characterized in that: described suction function be landfill unit around bury house steward underground; Link to each other with other tie points with horizontal joint in the house steward both sides; House steward links to each other with the joint of all level troughs and vertical tube connector through flow control valve, is responsible for finally to link to each other with a central station that air blast and torch station are installed, and landfill gas is extracted out in landfill yard under vacuum pressure through the air blast of central station.
5. efficient product according to claim 4 natural pond type household refuse landfill sites, it is characterized in that: the described person in charge is arranged on beyond the landfill unit region.
6. efficient product according to claim 2 natural pond type household refuse landfill sites; It is characterized in that: described horizontal gatherer for have two-layer or two-layer more than horizontal landfill gas collecting pipe; The adjacent level landfill gas collecting pipe of identical aspect is spaced apart 50 meters, and the horizontal displacement between levels between the horizontal feeder is at 25 meters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104413584A CN102441552A (en) | 2011-12-26 | 2011-12-26 | High-efficiency biogas-producing domestic waste landfill |
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| CN2011104413584A CN102441552A (en) | 2011-12-26 | 2011-12-26 | High-efficiency biogas-producing domestic waste landfill |
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Cited By (6)
| 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 |
| CN109047265A (en) * | 2018-07-23 | 2018-12-21 | 深圳市为民生态技术有限公司 | A kind of percolate and biogas joint guide system |
| CN109290332A (en) * | 2018-09-29 | 2019-02-01 | 湖南新九方科技有限公司 | A kind of pollution-free landfill disposal method in rural garbage |
| CN110592144A (en) * | 2019-09-25 | 2019-12-20 | 张阳 | Method for converting landfill domestic garbage into methane |
| CN112871946A (en) * | 2021-03-01 | 2021-06-01 | 朱仁俊 | Gas discharge structure of sealed well type refuse landfill |
| CN114669572A (en) * | 2022-03-28 | 2022-06-28 | 电子科技大学中山学院 | Leachate treatment device and method for refuse landfill |
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| US6024513A (en) * | 1996-11-14 | 2000-02-15 | American Technologies Inc | Aerobic landfill bioreactor |
| US20040191755A1 (en) * | 2003-03-24 | 2004-09-30 | Ch2M Hill, Inc. | Reclaimable hybrid bioreactor |
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| US5857807A (en) * | 1996-06-14 | 1999-01-12 | R. J. Longo Construction Co., Inc. | Municipal solid waste landfill system |
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Cited By (8)
| 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 |
| CN109047265A (en) * | 2018-07-23 | 2018-12-21 | 深圳市为民生态技术有限公司 | A kind of percolate and biogas joint guide system |
| CN109290332A (en) * | 2018-09-29 | 2019-02-01 | 湖南新九方科技有限公司 | A kind of pollution-free landfill disposal method in rural garbage |
| CN110592144A (en) * | 2019-09-25 | 2019-12-20 | 张阳 | Method for converting landfill domestic garbage into methane |
| CN112871946A (en) * | 2021-03-01 | 2021-06-01 | 朱仁俊 | Gas discharge structure of sealed well type refuse landfill |
| CN112871946B (en) * | 2021-03-01 | 2022-08-16 | 南京禹智智能科技有限公司 | Gas discharge structure of sealed well type refuse landfill |
| CN114669572A (en) * | 2022-03-28 | 2022-06-28 | 电子科技大学中山学院 | Leachate treatment device and method for refuse landfill |
| CN114669572B (en) * | 2022-03-28 | 2023-10-27 | 武汉天源环保装备制造有限公司 | Leachate treatment device and treatment method for refuse landfill |
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Application publication date: 20120509 |