CN112246822A - Oxygen therapy aeration system for accelerating stabilization of refuse landfill - Google Patents
Oxygen therapy aeration system for accelerating stabilization of refuse landfill Download PDFInfo
- Publication number
- CN112246822A CN112246822A CN202010877926.4A CN202010877926A CN112246822A CN 112246822 A CN112246822 A CN 112246822A CN 202010877926 A CN202010877926 A CN 202010877926A CN 112246822 A CN112246822 A CN 112246822A
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- Prior art keywords
- aeration
- oxygen therapy
- gas
- stabilization
- well
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- 238000005273 aeration Methods 0.000 title claims abstract description 87
- 238000002640 oxygen therapy Methods 0.000 title claims abstract description 44
- 230000006641 stabilisation Effects 0.000 title claims abstract description 27
- 238000011105 stabilization Methods 0.000 title claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 71
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 22
- 239000007924 injection Substances 0.000 abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 16
- 239000001301 oxygen Substances 0.000 abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 abstract description 16
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 21
- 239000011229 interlayer Substances 0.000 description 12
- 238000005192 partition Methods 0.000 description 12
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- 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
- B09B1/004—Covering of dumping sites
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an oxygen therapy aeration system for accelerating stabilization of a landfill body of a refuse landfill. The aeration fan aerates the layered oxygen-transferring aeration wells vertically distributed in the garbage pile body through the gas-transferring pipeline; and the gas concentration in the garbage dump body fed back by the layered monitoring well is combined, and the gas quantity injected into each layer of garbage dump body is regulated through a gas regulating valve and a gas flowmeter. Through the oxygen-transferring aeration system, the air is respectively and quantitatively injected into the gas injection pipes at different levels by combining the data of oxygen concentration, temperature and humidity and the like in the garbage at different levels fed back by the on-line monitoring device, so that the purposes of quantitative gas distribution at different depths and uniform gas distribution at the same level are achieved, and the stabilization speed of the garbage pile in the landfill site is accelerated.
Description
Technical Field
The invention belongs to the technical field of household garbage treatment, and particularly relates to an oxygen therapy aeration system for accelerating stabilization of a landfill body of a garbage landfill.
Background
The stabilization of the garbage stack in the landfill site is accelerated, the release of garbage pollutants can be reduced or eliminated in a short time, and the problem of long-term pollution of the garbage stack site is solved from the source. Oxygen therapy and aeration are the main regulation and control means for accelerating the stabilization of the garbage. However, because the density of the garbage is not uniformly distributed, the conventional oxygen-transferring aeration deep well is difficult to uniformly inject air into the garbage dump, and how to realize uniform distribution of air in the garbage dump at different levels is a difficult problem for accelerating the application of the stabilization technology of the garbage landfill.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an oxygen therapy aeration system for accelerating stabilization of a landfill body, which can quickly and effectively inject air into a target garbage layer in a quantitative manner by combining real-time online monitoring feedback data, so that the oxygen concentration in the landfill body reaches the optimal in-situ aerobic stabilization condition. The oxygen-delivery aeration system overcomes the defects that layered gas injection cannot be performed on the garbage dump in the prior art, and the problem that the gas-water ratio in the garbage dump at different depths cannot reach the optimal in-situ aerobic stabilization is solved.
The technical scheme provided by the invention for solving the technical problems is as follows:
an oxygen therapy aeration system for accelerating stabilization of a landfill body of a refuse landfill comprises an oxygen therapy aeration well, a gas flowmeter, a gas regulating valve, a layered monitoring well, data acquisition terminal equipment, an aeration fan and a gas transmission pipeline. The aeration fan aerates the layered oxygen-transferring aeration wells vertically distributed in the garbage pile body through the gas-transferring pipeline; and the gas concentration in the garbage dump body fed back by the layered monitoring well is combined, and the gas quantity injected into each layer of garbage dump body is regulated through a gas regulating valve and a gas flowmeter.
The oxygen therapy aeration well comprises an oxygen therapy aeration well pipe, a gas injection pipe, an interlayer partition plate and a gravel filler. The interlayer partition plates are positioned in the oxygen therapy aeration well pipe and divide the oxygen therapy aeration well pipe into a plurality of layers, and each layer is a cylindrical cavity which is sealed up and down. One end of each of the plurality of gas injection pipes is connected with the out-of-well fan, and the other end of each of the plurality of gas injection pipes penetrates through the interlayer partition plate to reach the depth of the corresponding target garbage layer. The gravel filler is filled around the oxygen therapy aeration well pipe.
Furthermore, the oxygen therapy aeration well pipe is a slotted sieve pipe which adopts a spiral slot arrangement mode; and cutting a seam on the slotted screen pipe by using a mechanical cutter or a laser mode, wherein the cutting seam adopts a trapezoidal slot form.
Furthermore, the slotted groove of the slotted sieve tube of the oxygen therapy aeration well is a trapezoidal slot with the outer width of 1.5mm and the inner width of 2.1mm, the length of the slotted slot is 45mm, and the distance between the slotted slots is 1.5 mm.
Furthermore, the oxygen therapy aeration well pipe is an HDPE pipe, a PE pipe or a steel pipe.
Further, the distance between the oxygen-conveying aeration wells is determined according to the influence radius of the oxygen-conveying aeration wells, and the distance between adjacent oxygen-conveying aeration wells is 15-30 m; the influence range of the oxygen-transferring aeration wells is the area of circles with the distance as the radius, and the number of the oxygen-transferring aeration wells needing to be distributed in the refuse landfill is determined according to the area of the refuse landfill and the influence range of the oxygen-transferring aeration wells.
Furthermore, the interlayer partition plate is a prefabricated partition plate and is arranged in the position, which is flush with the topmost end of the target garbage layer, in the well pipe of the oxygen therapy aeration well.
Further, the gas flowmeter is mounted on the gas injection pipe and is a vortex gas flowmeter.
Furthermore, the outer side of the slotted sieve tube of the oxygen-transferring aeration well is wrapped with a geogrid, and the specification of the geogrid is 1500mm by 1500 mm.
Furthermore, the particle size of the crushed stone in the crushed stone filler is 30-60 mm.
Further, the gas flowmeter is a vortex gas flowmeter; the gas regulating valve is a ball valve and is made of stainless steel.
Furthermore, the layered monitoring well comprises a plurality of multi-parameter gas sensors, and the gas concentration, the temperature, the humidity and the like of the garbage pile body can be monitored in a layered mode. The multi-parameter gas sensor is connected with a data acquisition terminal device, and the data acquisition terminal device is a data acquisition device and is provided with a Central Processing Unit (CPU), a read-only memory (ROM), a read-write memory (RAM), a keyboard and a screen display. The automatic device has the functions of on-site real-time data acquisition and processing. The system has the functions of real-time acquisition, automatic storage, instant display, instant feedback, automatic processing and automatic transmission.
Furthermore, 2-6 layered monitoring wells are arranged in the refuse landfill, and the positions of the layered monitoring wells are uniformly distributed on a refuse landfill pile body.
Compared with the prior art, the invention has the beneficial characteristics that:
(1) through setting up oxygen therapy aeration well and layering monitoring well, can carry out quantitative aeration to the rubbish heap body according to the real-time condition in the rubbish heap body of monitoring well feedback, be favorable to making the rubbish heap body that is located different levels reach stable state fast.
(2) The oxygen transfer aeration well is divided into a plurality of independent gas injection layers by arranging a prefabricated interlayer partition plate in the oxygen transfer aeration well pipe, and the gas injection amount of the target garbage layer can be respectively regulated and controlled.
(3) The well pipe of the oxygen-transferring aeration well adopts a spiral slotted sieve pipe, so that the service life of the sieve pipe is ensured, and the anti-blocking capacity of the sieve pipe is improved by adopting a trapezoidal slotted groove form for a cutting slot.
Drawings
FIG. 1 is a schematic view of an oxygen-delivering aeration system for accelerating stabilization of a landfill body according to the present invention.
Fig. 2 is a schematic structural diagram of an oxygen therapy aeration well of the oxygen therapy aeration system for accelerating stabilization of the landfill body of the refuse landfill.
FIG. 3 is a schematic view of a trapezoidal slit of a slotted sieve tube of an oxygen-delivery aeration well of the oxygen-delivery aeration system for accelerating stabilization of a landfill body of a refuse landfill.
Wherein: 1. the system comprises an oxygen-transferring aeration well (101, an oxygen-transferring aeration well pipe, 102, a gas injection pipe, 103, an interlayer separation plate, 104, gravel filler), 2, a gas flowmeter, 3, a gas regulating valve, 4, a layered monitoring well, 5, data acquisition terminal equipment, 6, an aeration fan and 7, a gas transmission pipeline.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and drawings, but the scope of the present invention is not limited thereto.
Referring to fig. 1, an oxygen therapy aeration system for accelerating stabilization of a landfill body comprises an oxygen therapy aeration well 1, a gas flowmeter 2, a gas regulating valve 3, a layered monitoring well 4, a data acquisition terminal device 5, an aeration fan 6 and a gas transmission pipeline 7. The aeration fan 6 aerates the layered oxygen-transferring aeration wells 1 vertically distributed in the garbage pile through gas-transferring pipelines 7; and the gas concentration in the garbage dump body fed back by the layered monitoring well 4 is combined, and the gas quantity injected into each layer of garbage dump body is regulated through the gas regulating valve 3 and the gas flowmeter 2.
As shown in FIG. 2, the oxygen aeration well 1 comprises an oxygen aeration well pipe 101, a gas injection pipe 102, an interlayer separator plate 103, and a crushed stone filler 104.
In this embodiment, the landfill waste pile body is divided into three layers, 3 interlayer partition plates 103 are arranged in the oxygen therapy aeration well pipe 101, the interlayer partition plates 103 are prefabricated partition plates, the oxygen therapy aeration well pipe 101 is divided into three layers at the position flush with the topmost end of a target waste layer in the oxygen therapy aeration well pipe 101, and each layer is a cylindrical cavity body which is closed up and down. 3 gas injection pipes 102, namely a first gas injection pipe, a second gas injection pipe and a third gas injection pipe, are introduced into the oxygen therapy aeration well casing 101 and are sequentially positioned in the oxygen therapy aeration well casing from top to bottom, one end of each gas injection pipe 102 is respectively connected with an outdoor fan, the other end of each first gas injection pipe penetrates through the interlayer partition plate 103 to reach the first garbage layer, the other end of each second gas injection pipe penetrates through the interlayer partition plate 103 to reach the second garbage layer, and the other end of each third gas injection pipe penetrates through the interlayer partition plate 103 to reach the third garbage layer. In order to facilitate regulation of the amount of gas injected into each layer, a gas flowmeter is installed on each of the 3 gas injection pipes 102.
In the present embodiment, the oxygen aeration well pipe 101 is a slotted screen pipe, and is made of HDPE pipe, PE pipe, or steel pipe.
In the embodiment, the area of the refuse landfill is 60 mu, and the distance between the adjacent oxygen-transferring aeration wells 1 is 20 m; the number of the oxygen aeration wells is 32.
Preferably, the gas flow meter is a vortex gas flow meter.
Preferably, in order to ensure the operation safety and the service life of the screen pipe, the slotted screen pipe is in the form of spirally distributed slots.
In the present embodiment, the slotted screen is cut into slots by a mechanical cutter or laser, preferably in the form of trapezoidal slots as shown in fig. 3 in order to improve the anti-clogging capability of the screen.
In the embodiment, the slotted groove of the slotted sieve tube of the oxygen transfer aeration well is a trapezoidal slot with the outer width of 1.5mm and the inner width of 2.1mm, the slotted length is 45mm, and the slot interval is 1.5 mm.
Preferably, in order to prevent the garbage in the garbage pile from blocking the oxygen transfer aeration well pipe 101, a geogrid is wrapped outside a slotted sieve pipe of the oxygen transfer aeration well, and the specification of the geogrid is 1500mm by 1500 mm; the particle size of the crushed stone in the crushed stone filler 104 is 30-60 mm.
The system works as follows:
and quantitatively inputting air by combining the oxygen concentration and the temperature and humidity of the garbage piles at different levels fed back by the data acquisition terminal equipment of the layered monitoring well. Firstly, opening a gas regulating valve 3, simultaneously starting an aeration fan 1 to carry out oxygen transfer aeration on the garbage pile bodies positioned at different layers, carrying out oxygen transfer aeration on gas to corresponding target garbage layers through gas injection pipes 102 positioned at different layers, and enabling the gas entering an oxygen transfer aeration well to enter the garbage pile bodies along a trapezoidal seam on a well pipe so as to achieve the purpose of carrying out layered aeration on the garbage pile bodies.
The innovation point and the achieved effect of the invention are as follows:
the layered gas injection of the oxygen therapy aeration well is realized by utilizing 'one well with multiple layers', and the in-situ aerobic stabilization efficiency is improved. The system has the advantages that one well is divided into a plurality of layers, and air is quantitatively injected into the gas injection pipes at different levels respectively by combining data such as oxygen concentration, water content, temperature and the like in the garbage at different levels fed back by the online monitoring device, so that the purposes of quantitative gas distribution at different depths and uniform gas distribution at the same level are achieved, and the stabilization speed of the garbage pile of the landfill site is accelerated.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. An oxygen therapy aeration system for accelerating the stabilization of a refuse landfill is characterized by comprising a plurality of oxygen therapy aeration wells, aeration fans and gas transmission pipelines which are arranged in the refuse landfill; the well casing of oxygen therapy aeration well is the screen pipe, is equipped with the division board between a plurality of layer in the screen pipe, and the division board between a plurality of layer is located the top on different target rubbish layers respectively, cuts apart oxygen therapy aeration well into a plurality of upper and lower confined cavity, and a plurality of cavity is connected aeration fan through different gas transmission pipeline respectively.
2. The oxygen therapy aeration system for accelerating stabilization of a refuse landfill according to claim 1, wherein the distance between adjacent oxygen therapy aeration wells is 15-30 m.
3. An oxygen therapy aeration system according to claim 1 wherein each of said gas lines is provided with a gas flow meter and a gas regulating valve for regulating the amount of gas introduced into the corresponding target refuse bed.
4. The oxygen therapy aeration system for accelerating stabilization of refuse landfill according to claim 1, further comprising a layered monitoring well, wherein a multi-parameter gas sensor is respectively arranged at different target refuse layers in the layered monitoring well, and is used for monitoring gas concentration, temperature and humidity of each target refuse layer; the multi-parameter gas sensor is connected with the data acquisition terminal equipment.
5. The oxygen therapy aeration system for accelerating stabilization of refuse landfill according to claim 4, wherein the layered monitoring wells have 2-6 holes and are uniformly distributed in the refuse landfill.
6. The oxygen therapy aeration system for accelerating stabilization of a refuse landfill according to claim 1, wherein the sieve tube is a slotted sieve tube with spirally arranged slots.
7. The oxygen therapy aeration system for accelerating the stabilization of the refuse landfill according to claim 4, wherein the slotted groove of the slotted sieve tube is a trapezoidal slot with an outer width of 1.5-8.0 mm and an inner width of 2.1-10.0 mm, the slotted length is 45-240 mm, and the slot pitch is 1.5-8.0 mm.
8. The oxygen therapy aeration system for accelerating stabilization of a refuse landfill according to claim 1, wherein the outside of the oxygen therapy aeration well is wrapped with geogrid, and the specification of the geogrid is 1500mm by 1500 mm.
9. The oxygen therapy aeration system for accelerating stabilization of landfill sites according to claim 1, wherein the circumference of the well pipe of the oxygen therapy aeration well is filled with gravel packing.
10. The oxygen therapy aeration system for accelerating stabilization of a refuse landfill according to claim 9, wherein the crushed stone in the crushed stone filler has a particle size of 30 to 60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877926.4A CN112246822A (en) | 2020-08-27 | 2020-08-27 | Oxygen therapy aeration system for accelerating stabilization of refuse landfill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877926.4A CN112246822A (en) | 2020-08-27 | 2020-08-27 | Oxygen therapy aeration system for accelerating stabilization of refuse landfill |
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| CN112246822A true CN112246822A (en) | 2021-01-22 |
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| CN202010877926.4A Pending CN112246822A (en) | 2020-08-27 | 2020-08-27 | Oxygen therapy aeration system for accelerating stabilization of refuse landfill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700342A (en) * | 2022-05-24 | 2022-07-05 | 浙江大学 | Equipment and method for in-situ pretreatment of stored garbage |
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