CN106799385B - Urban garbage environmental protection processing system - Google Patents
Urban garbage environmental protection processing system Download PDFInfo
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- CN106799385B CN106799385B CN201710044033.XA CN201710044033A CN106799385B CN 106799385 B CN106799385 B CN 106799385B CN 201710044033 A CN201710044033 A CN 201710044033A CN 106799385 B CN106799385 B CN 106799385B
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- 239000010813 municipal solid waste Substances 0.000 title abstract description 39
- 230000007613 environmental effect Effects 0.000 title description 4
- 238000012545 processing Methods 0.000 title description 2
- 239000010410 layer Substances 0.000 claims abstract description 74
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000035515 penetration Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 2
- 239000000149 chemical water pollutant Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 150000007524 organic acids Chemical class 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000413 hydrolysate Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
An environment-friendly municipal waste treatment system, comprising: the anti-seepage protective layer is used for preventing the landfill leachate from transferring to the underground water to pollute the underground water body; a leachate discharge layer for discharging leachate generated in the landfill; the garbage burying layer is used for burying the urban garbage to be treated; the middle covering layer covers each layer of garbage buried layer; a leachate collection system for producing leachate; the leachate recharging system for recharging leachate comprises a plurality of groups of recharging pile columns, wherein each group of recharging pile columns comprises a first recharging pile column group and a second recharging pile column group which are arranged in a crossed manner; the recharge pile column comprises a three-way pipeline, the first pipeline is communicated with the percolate collecting system, and the second pipeline is an open pipeline which is vertically upward; the third tube is a tube with an angle of about 30 degrees with the vertical plane and a penetration hole is arranged in the middle.
Description
Technical Field
The invention relates to a solid waste treatment system, in particular to an environment-friendly municipal waste treatment system.
Background
Along with the enlargement of urban scale, the increase of urban population and the improvement of the living standard of residents, the yield of urban garbage is increased day by day,
the difficulty of garbage disposal is increased, difficulties are brought to urban development and management, and the survival and health of urban residents are seriously threatened.
Because the urban garbage has complex components and is influenced by economic development level, energy structure, natural conditions and traditional habits, the components of the urban garbage are greatly different, so that the treatment method of the urban garbage is different according to different national conditions, different treatment modes are adopted by different cities of one country, and finally, the harmless treatment, the resource treatment and the reduction treatment of the garbage are taken as treatment standards. The prior common garbage disposal methods include incineration power generation, compost fermentation, sanitary landfill, sorting and the like. Among them, the sanitary landfill method is widely adopted due to its advantages of low cost, wide application range, no secondary pollution, remarkable environmental protection effect, thorough disposal, etc., and is also an important method for municipal waste treatment in China.
In conventional sanitary landfills, biodegradation of waste is a natural degradation process without any control. Due to the complex composition of the garbage, the great difference of physical, chemical and biological characteristics and the limitation of the structural design of the garbage landfill, a proper growth environment cannot be provided for microorganisms, and the degradation process of the garbage is limited, so that the traditional garbage landfill has the disadvantages of slow degradation process, long stabilization period, incomplete degradation, low gas yield and complex leachate composition.
The bioreactor landfill technology is developed on the basis of the traditional sanitary landfill technology, the core of the bioreactor landfill technology is that a landfill site is regarded as a natural anaerobic biological filter bed, and the biological process of microorganisms in landfill garbage is enhanced through a purposeful leachate recirculation control system, so that the conversion and the stability of degradable organic components in the garbage are accelerated.
The stabilization process of the garbage in the bioreactor can be divided into five stages: an initial adjustment stage (aerobic decomposition), a transition stage (facultative decomposition), an acid production stage (anaerobic decomposition, non-methane production), a methane production stage (anaerobic decomposition, methane production) and a decomposition stage. Under the condition of landfill, oxygen in a garbage layer is consumed quickly, the landfill garbage enters an acid production stage through an adjustment and transition stage, and biodegradable components in the garbage are converted into a large amount of organic acid through continuous hydrolysis under the action of microorganisms. Therefore, when the leachate is directly recharged in the initial stage of landfill, the leachate containing a large amount of organic acid can be refilled into the buried layer, the condition of organic acid accumulation of the buried layer is aggravated, the acidic condition of the buried layer can inhibit the growth of methane bacteria and prevent the establishment of a methanation process, and meanwhile, the further hydrolytic acidification of organic matters is also inhibited, so that the stabilization process of the garbage is slowed down.
Disclosure of Invention
The invention provides an environment-friendly urban garbage treatment system which can accelerate aerobic metabolism of organic acid accumulated in garbage landfill and enable the garbage landfill layer to transition from an acid production stage to a methane production stage as soon as possible.
As an aspect of the present invention, there is provided an environmental protection municipal waste treatment system, comprising: the anti-seepage protective layer is arranged at the bottommost layer of the refuse landfill and is used for preventing the refuse leachate from transferring to underground water to pollute the underground water body; the leachate discharge layer is arranged above the anti-seepage protective layer and is used for discharging leachate generated in the landfill to a leachate collection system; a landfill layer for burying municipal refuse to be treated; an intermediate covering layer which covers each layer of refuse landfill layer after the refuse landfill; the leachate collecting system is used for collecting leachate generated in the landfill; the leachate recirculation system can recirculate leachate collected by the leachate collection system to a refuse landfill; the leachate recharging system comprises a plurality of groups of recharging pile columns, and each group of recharging pile columns comprises a first recharging pile column group and a second recharging pile column group which are arranged in a crossed manner; the recharging pile column comprises a three-way pipeline, wherein the first pipeline is communicated with the percolate collecting system through a pump and a valve, the second pipeline is a vertically upward pipeline, and the upper end of the second pipeline is opened; the third pipeline is a pipeline which forms an included angle of about 30 degrees with the vertical surface, and a penetration hole is arranged in the middle of the pipeline.
Preferably, the anti-seepage protective layer is a pure clay anti-seepage layer formed by compacting natural clay layers or artificial clay.
Preferably, the composite barrier layer is composed of the compacted clay and the geomembrane.
Preferably, after the multiple garbage landfill layers and the middle covering layer are buried, an ammonia nitrogen treatment layer is arranged on the middle covering layer.
Preferably, the ammonia nitrogen treatment layer is provided with magnesium ion particles.
Preferably, the leachate discharge layer is formed by laying gravels on the impermeable protective layer, and a guide channel for guiding leachate is arranged at the bottom of the leachate discharge layer.
Preferably, the middle covering layer is 15 cm-30 cm of clay +/-or sandy soil.
Preferably, the percolate collection system comprises a catchment basin for collecting percolate which is discharged through the percolate discharge layer guide channel.
Preferably, the second pipeline is of a structure with a gradually reduced opening, and the cross-sectional area of the joint of the second pipeline and the third pipeline is the smallest; the first pipeline and the third pipeline are cylindrical pipelines, the sectional area of the third pipeline is the same as the minimum sectional area of the second pipeline, and the sectional area of the first pipeline is smaller than that of the third pipeline.
Preferably, the cross-sectional area of the first conduit is less than 2/3 of the cross-sectional area of the third conduit.
Preferably, the penetration holes of the third pipeline comprise two rows, the first row of penetration holes is arranged at the top of the vertical section of the third pipeline, and the second row of penetration holes is arranged at the bottom of the vertical section of the third pipeline.
Preferably, the pore diameter of the first row of permeation holes increases from high to low, and the pore diameter of the second row of permeation holes decreases from high to low.
Drawings
Fig. 1 is a schematic structural diagram of an environment-friendly municipal waste treatment system according to an embodiment of the invention.
Fig. 2 is a schematic view of a recharge pile according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.
The municipal refuse environment-friendly treatment system of the embodiment of the invention is arranged in a refuse landfill, and comprises an impermeable protective layer 10, a filtrate discharge layer 20, refuse landfill layers 30 and an intermediate covering layer 40 which are alternately arranged from bottom to top, as shown in fig. 1. The anti-seepage protective layer 10 is arranged at the bottommost layer of the refuse landfill and is used for preventing the refuse leachate from moving to underground water to pollute the underground water body. In practical engineering, the requirement for the barrier layer is that the permeability coefficient is not more than 10-7cm/s. The low-cost impermeable protective layer 10 can be a pure clay impermeable layer formed by compacting natural clay or artificial clay, and in order to effectively prevent leachate from leaking, the impermeable protective layer 10 can be a composite impermeable layer formed by compacting clay and a geomembrane.
The leachate discharge layer 20 is disposed above the impermeable protective layer 10 for discharging leachate generated in the landfill to a leachate collection system. The leachate discharge layer 20 can be formed by paving gravel by using water collecting stones with the diameter of 5 cm-l 0cm, and a guide channel for guiding leachate is arranged at the bottom of the leachate discharge layer 20.
The garbage buried layers 30 and the middle covering layers 40 are alternately arranged, a bioreactor is formed in the garbage buried layers 30, and the garbage is subjected to hydrolytic acidification, hydrogen production, acetic acid production and methane production in sequence to reach a stable stage. After a landfill layer 30 is buried, an intermediate covering layer 40 is covered to prevent the spread of top garbage and bacteria and reduce the pollution of landfill garbage malodorous gas to the atmospheric environment. The intermediate covering layer 40 can be configured by using sand or clay of 15-30 cm.
The percolate collecting system comprises a water accumulating tank 50 which is communicated with the diversion trench of the percolate discharging layer 20 through a pipeline and is used for collecting percolate discharged through the diversion trench of the percolate discharging layer 20. A leachate recirculation system capable of recirculating leachate collected by the leachate collection system to a landfill. The percolate recharging system comprises a recharging pile which is communicated with a water accumulation pool 50 of the percolate collecting system through a pump 51 and a valve 52.
The recharge pile comprises a plurality of recharge pile groups 60, and the number of the recharge pile groups 60 can be determined according to the size of the refuse landfill. The recharge column set 60 may be provided in the form of a first 61 and a second 62 set of recharge columns arranged crosswise, as shown in figure 1, so that landfill 30 of different locations and depths can be recharged with leachate.
The specific arrangement of the single recharge pile 100 is shown in fig. 2 and comprises a three-way pipeline, wherein a first pipeline 101 is communicated with a leachate collection system through a pump and a valve and is used for intermittently providing leachate to a landfill site according to the control of the pump 51 and the valve 52; the second pipe 102 is a vertically upward pipe, and has an open upper end for supplying air input to the recharge pile 100, and thus to the landfill 30; the third pipeline 103 is a pipeline which forms an included angle of about 30 degrees with the vertical surface, a penetration hole is arranged in the middle of the pipeline, and percolate and air are provided through the penetration hole. Therefore, air can be continuously diffused in the garbage filling layer through the recharging pile column 100, and organic matters in the filling layer and organic acid of hydrolysate thereof are directly decomposed aerobically, so that the accumulation of the organic acid is reduced, the garbage can be stabilized as soon as possible, and the pollution intensity of leachate is reduced.
Preferably, the second pipe 102 is provided with a tapered opening structure, and the cross-sectional area of the connection between the second pipe 102 and the third pipe 103 is the smallest, so that the air can be conveniently introduced into the landfill layer 30. The first pipeline 101 and the third pipeline 103 are cylindrical pipelines, the cross-sectional area of the third pipeline 103 is the same as the minimum cross-sectional area of the second pipeline 102, the cross-sectional area of the first pipeline 101 is smaller than the cross-sectional area of the third pipeline 103, preferably, the cross-sectional area of the first pipeline 101 is smaller than 2/3 of the cross-sectional area of the third pipeline 103, so that when percolate flows from the first pipeline 101 to the third pipeline 103, a gap exists between the percolate in the third pipeline 103 and the top of the pipeline cross-section, so that air can be introduced into the landfill layer 30 through the gap when the percolate is refilled, and the speed of garbage disposal is further improved.
Preferably, as shown in fig. 2, the penetration holes of the third pipe 103 include two rows, and the first row 110 of penetration holes is disposed at the top of the vertical section of the third pipe 103 and serves as an air outlet hole for supplying air flowing to the landfill layer 30. The second drainage and permeation through hole 120 is arranged at the bottom of the vertical section of the third pipeline 103, and is used as an air output hole when no leachate is back-filled and is used as a leachate output hole when the leachate is back-filled.
Further preferably, in the arrangement of the permeation holes, the pore diameters of the first row of permeation holes 110 increase from high to low in sequence, so that more air flows from bottom to top in sequence; the aperture of the second drainage through hole 120 is reduced from high to low in sequence, so that the percolate flows from top to bottom in sequence, and the landfill layer at the upper part is recharged with more percolate.
Compared with the prior art, the embodiment of the invention has the advantages that: (1) through the crossed arrangement of the first recharging pile column group and the second recharging pile column group, the garbage buried layers at different positions and depths can be recharged by percolate; (2) through the arrangement of the three-way pipeline, oxygen in the air can reach the garbage buried layer through the three-way pipeline, and organic matters and hydrolysate organic acids in the garbage buried layer are directly subjected to aerobic decomposition, so that the accumulation of the organic acids is reduced; (3) the structure that the opening of the second pipeline is gradually reduced is adopted, so that the air can be guided in more favorably; (4) by arranging different pipeline diameters and positions of the permeation holes in the three-way pipeline, the leachate can guide air into the landfill layer when the leachate is recharged; (5) the garbage filling layer positioned at the upper part is enabled to obtain more leachate to be recharged by setting the aperture of the permeation hole.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (6)
1. An environment-friendly municipal waste treatment system, comprising: the anti-seepage protective layer is arranged at the bottommost layer of the refuse landfill and is used for preventing the refuse leachate from transferring to underground water to pollute the underground water body; the leachate discharge layer is arranged above the anti-seepage protective layer and is used for discharging leachate generated in the landfill to a leachate collection system; a landfill layer for burying municipal refuse to be treated; an intermediate covering layer which covers each layer of refuse landfill layer after the refuse landfill; the leachate collecting system is used for collecting leachate generated in the landfill; the leachate recirculation system can recirculate leachate collected by the leachate collection system to a refuse landfill; the method is characterized in that: the leachate recharging system comprises a plurality of groups of recharging pile columns, each group of recharging pile columns comprises a first recharging pile column group and a second recharging pile column group which are arranged in a crossed manner, so that landfill layers at different positions and depths can be recharged by leachate; the recharging pile column comprises a three-way pipeline, wherein the first pipeline is communicated with the percolate collecting system through a pump and a valve, the second pipeline is a vertically upward pipeline, and the upper end of the second pipeline is opened; the third pipeline is a pipeline which forms an included angle of about 30 degrees with the vertical surface, and a penetration hole is arranged in the middle of the pipeline; the first row of the penetration holes are arranged at the top of the vertical section of the third pipeline and only serve as air output holes, and only provide air flowing to the landfill layer when no leachate is recharged and the leachate is recharged; the second pipeline is set into an opening reducing structure, the sectional area of the connection part of the second pipeline and the third pipeline is the smallest, the first pipeline and the third pipeline are cylindrical pipelines, the sectional area of the third pipeline is the same as the smallest sectional area of the second pipeline, and the sectional area of the first pipeline is smaller than 2/3 of the sectional area of the third pipeline, so that when the percolate flows into the third pipeline from the first pipeline, a gap exists between the percolate in the third pipeline and the top of the pipeline section, and therefore when the percolate is refilled, air can be introduced into a landfill layer through the gap; the pore diameter of the first row of permeation holes is increased from high to low in sequence; the aperture of the second drainage through hole is reduced from high to low in sequence, so that the percolate flows from top to bottom in sequence, and the landfill layer at the upper part is recharged with more percolate.
2. The municipal waste environment-friendly treatment system according to claim 1, wherein: the anti-seepage protective layer is a pure clay anti-seepage layer formed by compacting natural clay layers or artificial clay.
3. The municipal waste environment-friendly treatment system according to claim 1, wherein: the anti-seepage protective layer is a composite anti-seepage layer consisting of compacted clay and a geomembrane.
4. The municipal waste environment-friendly treatment system according to claim 1 or 2, wherein: the leachate discharge layer is formed by laying gravels on the impermeable protective layer, and a guide channel for guiding leachate is arranged at the bottom of the leachate discharge layer.
5. The municipal waste environment-friendly treatment system according to claim 4, wherein: the middle covering layer is 15 cm-30 cm of clay plus or minus or sandy soil.
6. The municipal waste environment-friendly treatment system according to claim 5, wherein: the percolate collecting system comprises a water accumulating tank which is used for collecting percolate discharged through a percolate discharging layer diversion trench.
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JP7245193B2 (en) * | 2019-08-27 | 2023-03-23 | 株式会社イー・アール・シー高城 | Waste landfill disposal method |
CN111924970A (en) * | 2020-09-08 | 2020-11-13 | 成都兴蓉环保科技股份有限公司 | Landfill leachate recharging device and recharging method |
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US6481929B1 (en) * | 1998-04-27 | 2002-11-19 | Arcadis Geraghty & Miller | Aerobic bioreduction of municipal solid waste landfill mass |
US7128150B2 (en) * | 2001-09-07 | 2006-10-31 | Exxonmobil Upstream Research Company | Acid gas disposal method |
CN204564739U (en) * | 2015-03-24 | 2015-08-19 | 深圳市利赛实业发展有限公司 | Landfill gas level collects well |
CN205762931U (en) * | 2016-07-08 | 2016-12-07 | 深圳市中兰环保科技股份有限公司 | Inclined in the aerobic repair system of a kind of landfill yard takes out/gas injection well and system thereof |
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US5888022A (en) * | 1997-06-11 | 1999-03-30 | Environmental Control Systems, Inc. | Method and system for treating bio-degradable waste material through aerobic degradation |
CN1923382A (en) * | 2006-07-07 | 2007-03-07 | 华中科技大学 | Domestic refuse anaerobic-aerobic reactor circulating operation landfill method |
CN101767877B (en) * | 2010-01-13 | 2012-05-30 | 广西大学 | Microaerophilic recirculation treatment method for membrane-separation concentrated solution of garbage leachate |
CN102513327B (en) * | 2011-12-30 | 2014-03-12 | 清华大学 | Semi-aerobic landfill device for emitting greenhouse gases of refuse landfill site and application |
CN105668769B (en) * | 2016-01-18 | 2018-10-26 | 同济大学 | A kind of quasi- aerobic stabilization integrated system of comprehensive refuse landfill and its application |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6481929B1 (en) * | 1998-04-27 | 2002-11-19 | Arcadis Geraghty & Miller | Aerobic bioreduction of municipal solid waste landfill mass |
US7128150B2 (en) * | 2001-09-07 | 2006-10-31 | Exxonmobil Upstream Research Company | Acid gas disposal method |
CN204564739U (en) * | 2015-03-24 | 2015-08-19 | 深圳市利赛实业发展有限公司 | Landfill gas level collects well |
CN205762931U (en) * | 2016-07-08 | 2016-12-07 | 深圳市中兰环保科技股份有限公司 | Inclined in the aerobic repair system of a kind of landfill yard takes out/gas injection well and system thereof |
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