CN213506440U - Landfill permeable reaction structure - Google Patents
Landfill permeable reaction structure Download PDFInfo
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- CN213506440U CN213506440U CN202021734154.0U CN202021734154U CN213506440U CN 213506440 U CN213506440 U CN 213506440U CN 202021734154 U CN202021734154 U CN 202021734154U CN 213506440 U CN213506440 U CN 213506440U
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Abstract
The utility model discloses a landfill osmotic reaction structure sets up in the reservoir area of landfill, include: a landfill region for stacking landfill; the mineralized refuse filler is used for degrading pollutants in leachate generated by the landfill; the filter layer is arranged between the landfill and the mineralized refuse filler and is used for filtering particles in leachate generated by the landfill; the drainage guide pipeline is arranged to discharge leachate degraded by the mineralized garbage filler to the outside of the reservoir area; the gas injection pipeline is used for injecting gas into leachate in the mineralized refuse filler; and the air pumping pipeline is used for pumping gas generated by the fermentation of leachate in the mineralized refuse filler. The utility model discloses a border on the department and set up mineralize mineralization rubbish filler in the landfill district, utilize the biochemical preliminary treatment of leachate that mineralize mineralization rubbish produced the landfill thing in to the landfill district, the pollutant in the degradation leachate to reduce leachate pollutant concentration, reduce the degree of difficulty for subsequent processing, and then avoid leachate to store up.
Description
Technical Field
The utility model relates to a landfill structure, in particular to a landfill permeable reaction structure for pretreatment in a landfill leachate storage area.
Background
With the rapid development of social economy and the gradual improvement of living standard, the yield of urban domestic garbage is increased day by day, the garbage components are continuously changed, most of the domestic garbage is piled in a dew form without proper treatment, and serious harm is caused to human life and ecological environment, such as occupation of a large amount of land, air pollution, water pollution, fire hazard, harm to human health and the like. The landfill technology is suitable for all types of garbage due to simple operation, large treatment capacity, low treatment cost and the like, and is the most important garbage treatment mode at present.
Landfill is at the operation in-process, and pollutant concentration is high in the leachate, and the processing degree of difficulty is big, leads to many landfill leachate to store up more, and this can lead to treatment effect poor, with high costs, causes secondary pollution easily if handle improper.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a landfill site infiltration reaction structure, include:
a landfill region for stacking landfill;
the mineralized refuse filler is used for degrading pollutants in leachate generated by the landfill;
the filter layer is arranged between the landfill and the mineralized refuse filler and is used for filtering particles in leachate generated by the landfill;
the drainage guide pipeline is arranged to discharge leachate degraded by the mineralized garbage filler to the outside of the reservoir area;
the gas injection pipeline is used for injecting gas into leachate in the mineralized refuse filler;
and the air pumping pipeline is used for pumping gas generated by the fermentation of leachate in the mineralized refuse filler.
In some embodiments, the mineralized waste filler is disposed on one side of the landfill area, and the mineralized waste filler is located at a position lower than the landfill area.
In some embodiments, the mineralized waste filler is inclined at an angle of less than 90 ° to the side adjacent to the landfill area.
In some embodiments, the drainage guide pipeline is arranged at the bottom of the mineralized refuse filler.
In some embodiments, the present invention further comprises: and the crushed stone layer is arranged between the mineralized refuse filler and the guide and discharge pipeline.
In some embodiments, the present invention further comprises: and the impermeable layer is arranged at the bottom of the reservoir area.
In some embodiments, the mineralized landfill fill is disposed before a landfill dam of the reservoir area.
In some embodiments, the filter layer is disposed on the sides and top of the mineralized waste filler.
In some embodiments, the filtration layer is a geotextile having an areal density of 200g/m or greater2。
In some embodiments, the utility model discloses still include, temperature and humidity sensor sets up in mineralize mineralization rubbish packs for temperature and humidity in the mineralize mineralization rubbish packs are monitored.
The utility model discloses a border on the department and set up mineralize mineralization rubbish filler in the landfill district, utilize the biochemical preliminary treatment of leachate that mineralize mineralization rubbish filler produced the landfill thing in the landfill district, the pollutant (for example, COD, BOD and ammonia nitrogen etc.) in the degradation leachate to reduce leachate pollutant concentration, reduce the degree of difficulty for subsequent processing, and then avoid the leachate to store up. Meanwhile, the gas injection pipeline can be used for simultaneously injecting gas into the mineralized refuse filler, so that a good aerobic environment is ensured, the growth of aerobic degradation bacteria in the mineralized refuse filler is facilitated, landfill gas generated in the mineralized refuse filler can be timely pumped and discharged through the gas extraction pipeline, and the accumulation of harmful gas is avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Symbolic illustration in the drawings:
1, mineralizing a garbage area;
2, mineralizing the garbage filler;
3, an air injection pipeline;
30 gas injection wells;
4, an air extraction pipeline;
40 pumping a gas well;
5, filling a region;
6, an impermeable layer;
7, a guide and discharge pipeline;
8 a crushed stone layer;
9 a filter layer;
10, burying a dam;
a inclination angle of the inclined plane.
Detailed Description
The invention will be further explained by means of specific embodiments with reference to the drawings in which:
example 1
The present embodiment provides a landfill permeable reactive structure, as shown in fig. 1, disposed in a reservoir region of a landfill, including: a landfill region 5 for stacking landfill; the landfill area 5 is adjacent to the mineralized refuse area 1, and the mineralized refuse area 1 is filled with mineralized refuse fillers 2 for degrading pollutants in leachate generated by landfill; a filter layer 9 is arranged between the landfill and the mineralized refuse filler 2 and is used for filtering particles in leachate generated by the landfill; the drainage guide pipeline 7 is arranged at the bottom of the mineralized refuse region 1 and used for discharging leachate treated by the mineralized refuse filler to the outside of the reservoir region; the gas injection pipeline 3 is used for injecting gas into the leachate in the mineralized refuse filler 2; and the air pumping pipeline 4 is used for pumping gas generated by the fermentation of leachate in the mineralized refuse filler.
Mineralize mineralization rubbish filler 2 has organic matter content high, the structure is loose, the excellent performance of cation exchange capacity and permeability, can be formed with good biological population as bioreactor packing medium, the utility model discloses border on the department at landfill district 5 and set up mineralize mineralization rubbish district 1, utilize mineralize mineralization rubbish filler 2 wherein to carry out biochemical pretreatment to the leachate that the landfill thing in landfill district 5 produced, COD in the degradation leachate, pollutants such as BOD and ammonia nitrogen to reach and reduce leachate pollutant concentration, reduce the effect of the degree of difficulty for subsequent processing. Meanwhile, the gas injection pipeline 3 can be used for injecting gas into the mineralized refuse filler 2 at the same time, so that a good aerobic environment is ensured, the growth of aerobic degradation bacteria in the mineralized refuse filler is facilitated, landfill gas generated in the mineralized refuse filler can be timely pumped and discharged through the gas extraction pipeline 4, and the accumulation of harmful gas is avoided.
Optionally, the mineralized refuse filler 2 is refuse with the landfill age of more than 8 years, which is obtained after glass, stone and metal are removed by screening, the organic matter content is not lower than 9%, the porosity is not lower than 35%, and the cation exchange capacity is not lower than 1.2m mol/g dry refuse.
In some embodiments, the mineralized waste filler 2 is disposed on one side of the landfill 5, and the mineralized waste filler 2 is located at a position lower than the landfill 5. In this embodiment, the bottom of the reservoir area of the landfill site is a downward slope, and the mineralized waste filler 2 is disposed at the downward slope of the landfill area 5, so that leachate generated by the landfill can flow into the mineralized waste filler 2 under the action of gravity.
In some embodiments, the inclination angle a of the slope of the mineralized waste filler 2 on the side adjacent to the landfill area 5 is less than 90 °, so that leachate generated by the landfill in the landfill area 5 can flow into the mineralized waste filler 2 under the action of gravity, and preferably, the inclination angle a of the slope is between 60 ° and 80 °. The inclination angle a of the inclined plane is 75 deg. in this embodiment.
In this embodiment, a crushed stone layer 8 is further disposed between the mineralized refuse filler 2 and the drainage guide pipeline 7, and is used for filtering particle impurities in the leachate permeating downwards from the mineralized refuse filler 2, so as to prevent the blockage of the opening of the pipe wall of the drainage guide pipeline 7.
In this embodiment, the bottom of the reservoir area of the landfill is further provided with an impermeable layer 6 for preventing the infiltration of leachate into the ground to cause pollution.
In this embodiment, the mineralized waste filler 2 is placed in front of the landfill dam 10 in the reservoir area.
In this embodiment, the filter layer 9 is disposed between the landfill and the mineralized waste filler 2 for filtering particulate impurities in leachate generated by the landfill, and in some embodiments, the filter layer 9 may also be disposed on the side and top of the mineralized waste filler 2, or may wrap the mineralized waste filler 2.
In this embodiment, the filter layer 9 is geotextile with an areal density of 200g/m or more2。
In some embodiments, the landfill permeable reaction structure of the present invention further includes a temperature and humidity sensor (not shown) disposed in the mineralized refuse filler 2 for monitoring the temperature and humidity in the mineralized refuse filler.
Example 2
This embodiment provides a method for laying permeable reactive structures in landfill sites, to more clearly illustrate the structure and advantageous effects of the present invention, when embodied, including steps 1) to 3):
1) laying a filter layer 9 in front of a landfill dam 10 in a reservoir area of a landfill, and then backfilling mineralized waste filler 2 into the filter layer, wherein the mineralized waste filler 2 is filled at the lowest point of the reservoir area and is close to the landfill dam 10;
the length and depth of the mineralized refuse filler 2 after filling are determined according to the shape of the reservoir area, in the embodiment, the thickness of the mineralized refuse filler 2 is not less than 10m, the filter layer 9 is geotextile, and the surface density of the geotextile is more than or equal to 200g/m2。
2) Drilling a well in the mineralized refuse filler 2 by adopting a drilling machine hole forming mode, building a gas injection well 30 and an air extraction well 40, respectively placing a gas injection pipeline 3 and an air extraction pipeline 4 in the gas injection well 30 and the air extraction well 40, and then backfilling broken stones outside the pipe;
in this embodiment, the gas injection pipeline 3 and the gas extraction pipeline 4 are wrapped with a filter layer, the filter layer is made of geotextile, and the surface density of the geotextile is greater than or equal to 200g/m2。
In some embodiments, the diameter of gas injection well 30 and gas extraction well 40 is no less than 200mm, and the diameter of gas injection line 3 and gas extraction line 4 is no less than 110 mm.
In some embodiments, gas injection well 30 and pumping well 40 are spaced no less than 10m apart.
In some embodiments, the material of the gas injection pipe 3 and the gas extraction pipe 4 is high density polyethylene.
3) Performing refuse landfill in a reservoir area of a landfill site to form a landfill area 5;
in this embodiment, the landfill waste is domestic waste, sludge or hazardous waste.
In some embodiments, a temperature and humidity sensor (not shown) is further disposed in the mineralized waste filler 2 for monitoring the temperature and humidity inside the mineralized waste filler, and in this embodiment, the temperature and humidity sensor is disposed at different depths of the extraction well 40.
The above is only the preferred embodiment of the present invention, not for limiting the protection scope of the present invention, and the ordinary skilled person in the art can use the equivalent modification or change of the present invention, which should belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a landfill site infiltration reaction structure which sets up in the reservoir area of landfill site, includes:
a landfill region for stacking landfill;
mineralized refuse filler for degrading pollutants in leachate generated by the landfill;
the filter layer is arranged between the landfill and the mineralized refuse filler and is used for filtering particles in leachate generated by the landfill;
the drainage guide pipeline is arranged to discharge leachate degraded by the mineralized refuse filler to the outside of the reservoir area;
the gas injection pipeline is used for injecting gas into leachate in the mineralized refuse filler;
and the air pumping pipeline is used for pumping gas generated by the fermentation of the leachate in the mineralized refuse filler.
2. The landfill permeable reactive structure of claim 1, wherein the mineralized waste filler is disposed on one side of the landfill area at a position lower than the position of the landfill area.
3. The landfill permeable reactive structure of claim 2, wherein a side of the mineralized waste fill adjacent to the landfill area is an inclined surface with an inclination angle of less than 90 °.
4. The landfill permeable reactive structure of claim 1, wherein the drainage guide pipe is arranged at the bottom of the mineralized refuse filler.
5. The landfill permeable reactive structure of claim 4, further comprising: and the crushed stone layer is arranged between the mineralized refuse filler and the guide and discharge pipeline.
6. The landfill permeable reactive structure of claim 1, further comprising: and the impermeable layer is arranged at the bottom of the reservoir area.
7. The landfill permeable reactive structure of claim 1, wherein the mineralized landfill fill is disposed before a landfill dam of the reservoir area.
8. The landfill permeable reactive structure of any one of claims 1 to 3, wherein the filter layer is disposed at the side and top of the mineralized waste filler.
9. The landfill permeable reactive structure of claim 1, wherein the filter layer is geotextile having an areal density of 200g/m or more2。
10. The landfill site osmotic reaction structure of claim 1, further comprising a temperature and humidity sensor disposed within the mineralized waste filler for monitoring temperature and humidity within the mineralized waste filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021734154.0U CN213506440U (en) | 2020-08-19 | 2020-08-19 | Landfill permeable reaction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021734154.0U CN213506440U (en) | 2020-08-19 | 2020-08-19 | Landfill permeable reaction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213506440U true CN213506440U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021734154.0U Active CN213506440U (en) | 2020-08-19 | 2020-08-19 | Landfill permeable reaction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213506440U (en) |
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2020
- 2020-08-19 CN CN202021734154.0U patent/CN213506440U/en active Active
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