CN105668769A - Integrated type semi-aerobic stabilizing and integrating system for refuse landfill and application thereof - Google Patents
Integrated type semi-aerobic stabilizing and integrating system for refuse landfill and application thereof Download PDFInfo
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- CN105668769A CN105668769A CN201610030494.7A CN201610030494A CN105668769A CN 105668769 A CN105668769 A CN 105668769A CN 201610030494 A CN201610030494 A CN 201610030494A CN 105668769 A CN105668769 A CN 105668769A
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- 230000000087 stabilizing effect Effects 0.000 title abstract 3
- 238000004056 waste incineration Methods 0.000 claims description 36
- 239000010791 domestic waste Substances 0.000 claims description 33
- 230000006641 stabilisation Effects 0.000 claims description 24
- 238000011105 stabilization Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000001939 inductive effect Effects 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 11
- 239000010813 municipal solid waste Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 239000002361 compost Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 83
- 239000007789 gas Substances 0.000 description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004746 geotextile Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000004060 metabolic process Effects 0.000 description 3
- 244000038293 primary consumers Species 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
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- 230000015556 catabolic process Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 230000008557 oxygen metabolism Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
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- 239000002781 deodorant agent Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D2053/221—Devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
-
- 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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- 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
- Y02W30/20—Waste processing or separation
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an integrated type semi-aerobic stabilizing and integrating system for refuse landfill. The system comprises the following components: a landfill layer, a leachate collecting and discharge guiding layer which is arranged at the bottom of the landfill, a leachate collecting well which communicates with leachate collecting and discharge guiding layer, a semi-aerobic landfill gas guiding unit which is arranged in the landfill, a leachate recharging layer which is arranged on the landfill layer, and a leachate circulation pipeline for communicating the leachate recharging layer and the leachate collecting well; the landfill layer is prepared by mixed landfill of raw house refuse and incinerator slags of house refuse. Compared with the prior art, the system has the advantages of integral simple structure, construction convenience, low construction cost, and energy saving and environmental protection; the traditional semi-aerobic landfill technology of raw house refuse is improved, and a semi-aerobic stabilizing process during mixed landfill of raw house refuse and incinerator slags of house refuse is reinforced; and the system has a wide usage range and a good application prospect.
Description
Technical field
The invention belongs to environmental protection technical field, relate to the quasi-aerobic stabilization integrated system of a kind of comprehensive refuse landfill and application thereof.
Background technology
Domestic waste incineration residue accounts for the 15%-25% of waste incineration amount, requires that consumer waste incineration processes ratio and should reach 35% in China " 12 " whole nation application of city life garbage harmless treatment Facilities Construction planning, and newly-increased burning disposal amount is more than 200,000 ton per days. At present, optimum slag utilizes under condition, and in slag, the metal of 5%-10% and combustable organic thing can sort recovery, and 80% inorganic matter can be used for building aggregate, still has the slag of 5-15% to need landfill. Fill the difference of ratio according to landfill yard self-condition and slag, domestic waste incineration residue and primary consumer waste filling and embedding are roughly divided into 3 kinds of situations: the landfill yard that 1) slag treatment ratio is little, how slag are used for primary household refuse landfill sites and cover; 2) slag treatment large percentage, unit split the landfill yard being easier to realize, and the unit adopting separation dispose primary house refuse and domestic waste incineration residue respectively; 3) slag treatment large percentage, unit split landfill yard not easily, primary house refuse and the most blended landfill of domestic waste incineration residue. The landfill yard of primary house refuse and domestic waste incineration residue is disposed in domestic all kinds of mixing, design all identical with primary household refuse landfill sites with operation aspect, but because domestic waste incineration residue is likely to affect leachate quality and landfill gas generation feature, the collection of percolate is transported and biological treatment all has impact.
Quasi-aerobic landfill technology is by expanding landfill percolate drainage pipe road and landfill gas guide gas well line size, and connect drainage pipe road and inducing QI well, the difference with atmospheric temperature simultaneously utilizing inducing QI well to be affected by periphery buring layer and to produce, gas in well is made to form density contrast with ambient atmosphere and promote gas to flow, both the rate of oxygen of gas in well had been kept, it is possible to enriched with oxygen passes through the borehole wall diffusion to buring layer. Lasting oxygen diffusion makes buring layer be gradually converted into facultative oxygen metabolism of becoming reconciled by anaerobic metabolism centered by inducing QI well and drainage pipe, mixing metabolism can compose the carbon in degraded rubbish, nitrogen pollutant (TheFukuokaMethod:WhatisSemi-aerobic.Japan:FukuokaCityEnv ironmentalBureau, 1999) entirely.Although existing quasi-aerobic landfill technology has above-mentioned advantage, but this technology relies on buring layer internal pore transmission oxygen, makes degraded in layer gradually form oxygen condition; And space is minimum after primary consumer waste filling and embedding, make the become better conversion of oxygen metabolism of anaerobism very slow. Simultaneously, quasi-aerobic landfill belongs to mixing metabolism, and the content of organics of domestic waste incineration residue and primary domestic garbage mixing thing is substantially less than common house refuse, and landfill gas recovery value is not high, collection and confinement of gases pipeline and atmosphere, both made landfill gas lose energy recovery and be worth; Also pollute because foul smell release is formed.
The Chinese patent that Authorization Notice No. is CN102513327B discloses a kind of quasi-aerobic landfill device reducing discharging refuse landfill greenhouse gases and application, and this device includes gas handling system, gas directing system and gas distribution system; Described gas handling system is provided with the percolate guide supervisor of some passages by a upper semi-circle and is positioned at the percolate guide of described percolate guide supervisor both sides and props up pipe network and form; Described gas directing system is the vertical airway composition that some perisporiums are provided with passage, and described vertical airway is divided into the permanent vertical airway in footpath and the vertical airway of reducing; Described gas distribution system be several ventilation top wheel, each described ventilation top wheel by some radial arrangement and be provided with passage top wheel vent branch and a loop draught pipe form; Described vertical airway lower end is connected with described gas handling system, and described reducing vertical airway upper end is connected with described top wheel vent branch. The technical scheme of above-mentioned patent disclosure is mainly by natural diffuseness draught principle, but because primary consumer waste filling and embedding layer voidage is low, lack of homogeneity, air diffuser efficiency is relatively low, and waste stabilisation speed is slower; Odorant pollutant in landfill gas, with vent air entered environment, easily causes landfill yard ambient atmosphere and pollutes.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of simple in construction is provided, compact, environmental protection, the quasi-aerobic stabilization integrated system of comprehensive refuse landfill that economic and practical is good and application thereof.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of quasi-aerobic stabilization integrated system of comprehensive refuse landfill, this system includes buring layer, the leachate collection well being connected with leachate collection lead layer that is arranged on the leachate collection lead layer bottom buring layer, the quasi-aerobic landfill gas-conducting cells being arranged in buring layer, the leachate recirculation layer being arranged on buring layer top and the leachate tail water pipeline being connected with leachate collection well by leachate recirculation layer, and described buring layer is formed by primary house refuse and domestic waste incineration residue blended landfill.
Described leachate collection lead layer is made up of the porous leachate collection pipeline being laid in bottom buring layer, described porous leachate collection pipeline is connected with leachate collection well, and described porous leachate collection pipeline is the collection conduit that tube wall upper half uniformly offers multiple liquid-leadage hole.
The internal diameter of described porous leachate collection pipeline is 500-800mm, and the percent opening of tube wall upper half is 10-15%, and the aperture of described liquid-leadage hole is 20-50mm.
Described quasi-aerobic landfill gas-conducting cells is by multiple vertical inducing QI well constructions being parallel to each other and be vertically plugged in buring layer, and described vertical inducing QI well includes perforated pipe, the protection network that is packaged in perforated pipe outer rim and the foul gas that is filled between perforated pipe and protection network purify packing layer.
The bottom of described perforated pipe is fixed on the bottom of buring layer, top is connected through leachate recirculation layer with air, and the top of described perforated pipe is additionally provided with axial fan, this axial fan is solar photovoltaic driving axial fan, by solar photovoltaic driving, when in buring layer, the amount of landfill of domestic waste incineration residue is less than 30%, the blast of axial fan is 6-8kPa, and when in buring layer, the amount of landfill of domestic waste incineration residue is more than 50%, the blast of axial fan is 5-7kPa.
The diameter of described vertical inducing QI well is 1.2-2.0m, and center is perforated pipe, and outer rim is steel wire protection net; Wherein, the internal diameter of perforated pipe is 150-200mm, and the tube wall of perforated pipe uniform pore openings except each 1m in two ends, and aperture is 10-20mm.
Described foul gas purify packing layer by domestic waste incineration residue, stablize house refuse and rubble mixes for 1-4:1-4:1-2 in mass ratio.
Described stable house refuse is the consumer garbage compost reaching rotten degree standard or the house refuse having disposed more than 10 years at landfill yard siftage after 10mm sieves.
Elevator pump that described leachate tail water pipeline includes being arranged on leachate collection bottom and be arranged on and recharge pipeline between elevator pump and leachate recirculation layer, the described percolate in leachate collection well, under the effect of elevator pump, is back to leachate recirculation layer through recharging pipeline.
The water distribution pipe network that described leachate recirculation layer is connected with arm by the main being laid on buring layer top is constituted, wherein, main is connected with elevator pump by recharging pipeline, and the space between main and arm is filled with domestic waste incineration residue and flattens.
Described leachate recirculation layer acts primarily as water distribution effect, oxygen-consuming Organic substance in percolate is made to contact with the microorganism in buring layer with ammonia nitrogen, aerobic, anoxia that buring layer is realized by forced ventilation and anaerobic environment alternate, be combined with recharging percolate flowing time delay feature in buring layer, it is reduced to nitrogen for the organic aerobic degradation of oxygen consumption type, the aerobic oxidation of ammonia nitrogen and denitrification and condition is provided, thus enhancing the removal of COD and nitrogen in percolate.
The sectional area of described leachate collection well is 2.5-5m2, and in leachate collection well the water level of percolate lower than leachate collection lead layer.
The application of the quasi-aerobic stabilization integrated system of a kind of comprehensive refuse landfill, described system is for carrying out blended landfill to primary house refuse and domestic waste incineration residue, it is achieved quasi-aerobic stabilization.
In actual design process; for preventing percolate leakage pollution surrounding soil and water body; can also arranging bottom antiseepage unit bottom buring layer, this bottom antiseepage unit is from top to bottom disposed with and spins geotechnique's sealing coat, rubble percolate guide layer, non-woven geotextile film up-protective layer, bright finish high-density polyethylene geomembrane impervious barrier, clay lenses, non-woven geotextile film lower protective layer, rubble subsoil water guide layer and Woven geofabric sealing coat. Meanwhile, leachate recirculation layer is laid polyethylene film, it is also possible to offer Cut-off ditch in the both sides of buring layer.
In the present invention, by laying polyethylene film on leachate recirculation layer, effective tissue of gas flowing in buring layer can be promoted, it is prevented that odor pollution thing inorganization discharges, and can prevent rainwater from entering buring layer simultaneously, reduce leachate generation.
The present invention adopts primary house refuse to realize primary house refuse and the rapid stabilization of domestic waste incineration residue mixing quasi-aerobic landfill with domestic waste incineration residue blended landfill, the ventilation of solar photovoltaic driving axial fan, leachate recirculation Integration ofTechnology. Meanwhile, by stable house refuse and waste incineration slag, landfill foul gas is purified, weaken the release strength of foul gas.
Compared with prior art, the invention have the characteristics that:
1) domestic waste incineration residue is mixed into primary house refuse and serves as aggregate structure, increases the uniformity of buring layer density and voidage, is conducive to air spread, can strengthen quasi-aerobic process, stablizing of acceleration labile organic compound;
2) natural diffuseness draught principle in tradition quasi-aerobic landfill field is compared, quasi-aerobic condition strengthened by the axial fan adopting solar photovoltaic driving, namely can the Oxygen supplied level of efficient hardening quasi-aerobic landfill and oxygen diffusion conditions, and then realize the rapid stabilization of primary house refuse;
3) original position utilizes domestic waste incineration residue and stablizes domestic garbage mixing thing as deodorant filler, namely utilize domestic waste incineration residue alkalescence and stablize the foul gas degradation bioactive that house refuse has, reduce the foul gas release strength such as ammonia nitrogen, hydrogen sulfide, and the axial fan being aided with solar photovoltaic driving carrys out reinforced deodorization efficiency, overcome the inherent shortcoming that primary house refuse quasi-aerobic landfill exists;
4) owing to adopting quasi-aerobic landfill gas-conducting cells, then it is capable of the multiple spot air inlet of buring layer, the bottom overcome in tradition quasi-aerobic landfill structure only has percolate guide to be responsible for this unique air inlet and cause deficiency of air, and completely cut through the drawback of air inlet approach during by water logging (percolate floods), make to could be used that in rainy humid region or season, use scope wide;
5) owing to arranging leachate recirculation layer on buring layer top, then can the removal of COD and nitrogen in efficient hardening percolate;
6) overall system architecture is simple, easy construction, construction cost is low, energy-conserving and environment-protective, traditional primary house refuse quasi-aerobic landfill technology is improved, quasi-aerobic stabilization process when can strengthen primary house refuse with domestic waste incineration residue blended landfill, uses scope wide, has good application prospect.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram;
Description of symbols in figure:
1 vertical inducing QI well, 2 buring layers, 3 axial fans, 4 foul gass purify packing layers, 5 polyethylene films, 6 leachate recirculation layers, 7 recharge pipeline, 8 elevator pumps, 9 leachate collection wells, 10 bottom antiseepage unit, 11 porous leachate collection pipelines, 12 Cut-off ditch, 13 perforated pipes.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1:
As shown in Figure 1, a kind of quasi-aerobic stabilization integrated system of comprehensive refuse landfill, this system includes buring layer 2, is arranged on leachate collection well 9, the quasi-aerobic landfill gas-conducting cells being arranged in buring layer 2, the leachate recirculation layer 6 being arranged on buring layer 2 top and the leachate tail water pipeline being connected with leachate collection well 9 by leachate recirculation layer 6 that bottom buring layer 2, the leachate collection lead layer of profit hundred is connected with leachate collection lead layer, and buring layer 2 is formed by primary house refuse and domestic waste incineration residue blended landfill.
Wherein, leachate collection lead layer is made up of the porous leachate collection pipeline 11 being laid in bottom buring layer 2, porous leachate collection pipeline 11 is connected with leachate collection well 9, and the upper half that porous leachate collection pipeline 11 is tube wall uniformly offers the collection conduit of multiple liquid-leadage hole. The internal diameter of porous leachate collection pipeline 11 is 800mm, and the percent opening of the upper half of tube wall is 10%, and the aperture of liquid-leadage hole is 50mm.
Quasi-aerobic landfill gas-conducting cells is made up of multiple vertical inducing QI wells 1 being parallel to each other and be vertically plugged in buring layer 2, and vertical inducing QI well 1 includes perforated pipe 13, the protection network that is packaged in perforated pipe 13 outer rim and the foul gas that is filled between perforated pipe 13 and protection network purify packing layer 4. The bottom of perforated pipe 13 is fixed on the bottom of buring layer 2, and top is connected through leachate recirculation layer 6 with air, and the top of perforated pipe 13 is additionally provided with axial fan 3, and this axial fan 3 is solar photovoltaic driving axial fan 3.
The diameter of vertical inducing QI well 1 is 2.0m, and center is perforated pipe 13, and outer rim is steel wire protection net; Wherein, the internal diameter of perforated pipe 13 is 200mm, and the tube wall of perforated pipe 13 uniform pore openings except each 1m in two ends, and aperture is 20mm. Foul gas purify packing layer 4 by domestic waste incineration residue, stablize house refuse and rubble mixes for 3:2:1 in mass ratio.
Leachate tail water pipeline include the elevator pump 8 that is arranged on bottom leachate collection well 9 and be arranged between elevator pump 8 and leachate recirculation layer 6 recharge pipeline 7, percolate in leachate collection well 9, under the effect of elevator pump 8, is back to leachate recirculation layer 6 through recharging pipeline 7.
The water distribution pipe network that leachate recirculation layer 6 is connected with arm by the main being laid on buring layer 2 top is constituted, and wherein, main is connected with elevator pump 8 by recharging pipeline 7, and the space between main and arm is filled with domestic waste incineration residue and flattens.
The sectional area of leachate collection well 9 is 5m2, and in leachate collection well 9 water level of percolate lower than leachate collection lead layer. And porous leachate collection pipeline 11 one end in leachate collection lead layer is connected with leachate collection well 9, drainage grade is 2.0%.
In actual design process; for preventing percolate leakage pollution surrounding soil and water body; can also arranging bottom antiseepage unit 10 bottom buring layer 2, this bottom antiseepage unit 10 is from top to bottom disposed with and spins geotechnique's sealing coat, rubble percolate guide layer, non-woven geotextile film up-protective layer, bright finish high-density polyethylene geomembrane impervious barrier, clay lenses, non-woven geotextile film lower protective layer, rubble subsoil water guide layer and Woven geofabric sealing coat. Meanwhile, leachate recirculation layer 6 is laid polyethylene film 5, it is also possible to offer Cut-off ditch 12 in the both sides of buring layer 2.
The application of the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of the present embodiment, system is for carrying out blended landfill to primary house refuse and domestic waste incineration residue, it is achieved quasi-aerobic stabilization.
When actually used, air conveying is realized by the axial fan 3 of the solar photovoltaic driving at perforated pipe 13 top, starts supply from from waste layer surface 15cm, and when domestic waste incineration residue amount of landfill is less than 30%, ventilation blower blast is 6-8kPa; Domestic waste incineration residue amount of landfill is more than 50%, and blast is 5-7kPa. Foul gas purifies packing layer 4 and is placed in the perforated pipe 13 in vertical inducing QI well 1 and between catch net, coordinates axial fan 3 to remove the H produced in landfill process2S、NH3Deng foul gas.
After domestic waste incineration residue and primary domestic garbage mixing quasi-aerobic landfill unit run 1 year, percolate dissolved organic carbon (DOC) concentration accounts for total DOC ratio more than 60% less than 1000mg/L, humic class DOC.
Embodiment 2:
In the present embodiment, the internal diameter of porous leachate collection pipeline 11 is 650mm, and the percent opening of tube wall upper half is 15%, and the aperture of liquid-leadage hole is 40mm.
The diameter of vertical inducing QI well 1 is 1.6m, and center is perforated pipe 13, and outer rim is steel wire protection net; Wherein, the internal diameter of perforated pipe 13 is 175mm, and the tube wall of perforated pipe 13 uniform pore openings except each 1m in two ends, and aperture is 10mm. Foul gas purify packing layer 4 by domestic waste incineration residue, stablize house refuse and rubble mixes for 1:1:2 in mass ratio.
The sectional area of leachate collection well 9 is 4m2, and in leachate collection well 9 water level of percolate lower than leachate collection lead layer.
All the other are with embodiment 1.
Embodiment 3:
In the present embodiment, the internal diameter of porous leachate collection pipeline 11 is 500mm, and the percent opening of tube wall upper half is 12%, and the aperture of liquid-leadage hole is 20mm.
The diameter of vertical inducing QI well 1 is 1.2m, and center is perforated pipe 13, and outer rim is steel wire protection net; Wherein, the internal diameter of perforated pipe 13 is 150mm, and the tube wall of perforated pipe 13 uniform pore openings except each 1m in two ends, and aperture is 15mm. Foul gas purify packing layer 4 by domestic waste incineration residue, stablize house refuse and rubble mixes for 4:4:1 in mass ratio.
The sectional area of leachate collection well 9 is 2.5m2, and in leachate collection well 9 water level of percolate lower than leachate collection lead layer.
All the other are with embodiment 1.
Embodiment 4:
In the present embodiment, the internal diameter of porous leachate collection pipeline 11 is 600mm, and the percent opening of tube wall upper half is 14%, and the aperture of liquid-leadage hole is 12mm.
The diameter of vertical inducing QI well 1 is 1.5m, and center is perforated pipe 13, and outer rim is steel wire protection net; Wherein, the internal diameter of perforated pipe 13 is 180mm, and the tube wall of perforated pipe 13 uniform pore openings except each 1m in two ends, and aperture is 16mm. Foul gas purify packing layer 4 by domestic waste incineration residue, stablize house refuse and rubble mixes for 3:4:2 in mass ratio.
The sectional area of leachate collection well 9 is 3.5m2, and in leachate collection well 9 water level of percolate lower than leachate collection lead layer.
All the other are with embodiment 1.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention. These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour. Therefore, the invention is not restricted to above-described embodiment, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention.
Claims (10)
1. the quasi-aerobic stabilization integrated system of comprehensive refuse landfill, it is characterized in that, this system includes buring layer (2), it is arranged on the leachate collection lead layer of buring layer (2) bottom, the leachate collection well (9) being connected with leachate collection lead layer, it is arranged on the quasi-aerobic landfill gas-conducting cells in buring layer (2), the leachate recirculation layer (6) being arranged on buring layer (2) top and the leachate tail water pipeline that leachate recirculation layer (6) is connected with leachate collection well (9), described buring layer (2) is formed by primary house refuse and domestic waste incineration residue blended landfill.
2. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 1, it is characterized in that, described leachate collection lead layer is made up of porous leachate collection pipeline (11) being laid in buring layer (2) bottom, described porous leachate collection pipeline (11) is connected with leachate collection well (9), and described porous leachate collection pipeline (11) uniformly offers the collection conduit of multiple liquid-leadage hole for tube wall upper half.
3. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 2, it is characterized in that, the percent opening of the upper half of described porous leachate collection pipeline (11) tube wall is 10-15%, and the aperture of described liquid-leadage hole is 20-50mm.
4. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 1, it is characterized in that, described quasi-aerobic landfill gas-conducting cells is made up of multiple vertical inducing QI wells (1) being parallel to each other and be vertically plugged in buring layer (2), and described vertical inducing QI well (1) includes perforated pipe (13), the protection network that is packaged in perforated pipe (13) outer rim and the foul gas that is filled between perforated pipe (13) and protection network purify packing layer (4).
5. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 4, it is characterized in that, the bottom of described perforated pipe (13) is fixed on the bottom of buring layer (2), top is connected through leachate recirculation layer (6) with air, the tube wall of described perforated pipe (13) uniform pore openings except each 1m in two ends, aperture is 10-20mm, the top of described perforated pipe (13) is additionally provided with axial fan (3), and this axial fan (3) is solar photovoltaic driving axial fan.
6. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 4, it is characterized in that, described foul gas purify packing layer (4) by domestic waste incineration residue, stablize house refuse and rubble mixes for 1-4:1-4:1-2 in mass ratio, wherein, described stable house refuse is the consumer garbage compost reaching rotten degree standard or the house refuse having disposed more than 10 years at landfill yard siftage after 10mm sieves.
7. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 1, it is characterized in that, described leachate tail water pipeline includes being arranged on the elevator pump (8) of leachate collection well (9) bottom and is arranged on and recharges pipeline (7) between elevator pump (8) and leachate recirculation layer (6), the described percolate in leachate collection well (9), under the effect of elevator pump (8), is back to leachate recirculation layer (6) through recharging pipeline (7).
8. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 7, it is characterized in that, the water distribution pipe network that described leachate recirculation layer (6) is connected with arm by the main being laid on buring layer (2) top is constituted, wherein, main is connected with elevator pump (8) by recharging pipeline (7), and the space between main and arm is filled with domestic waste incineration residue and flattens.
9. the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill of one according to claim 1, it is characterised in that in described leachate collection well (9), the water level of percolate is lower than leachate collection lead layer.
10. the application of the quasi-aerobic stabilization integrated system of the comprehensive refuse landfill as described in any one of claim 1 to 9, it is characterized in that, described system is for carrying out blended landfill to primary house refuse and domestic waste incineration residue, it is achieved quasi-aerobic stabilization.
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