CN209222868U - A kind of permeable reactive barrier device of renovation of organic pollution soil - Google Patents
A kind of permeable reactive barrier device of renovation of organic pollution soil Download PDFInfo
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- CN209222868U CN209222868U CN201822009946.0U CN201822009946U CN209222868U CN 209222868 U CN209222868 U CN 209222868U CN 201822009946 U CN201822009946 U CN 201822009946U CN 209222868 U CN209222868 U CN 209222868U
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Abstract
The utility model is a kind of permeable reactive barrier device of renovation of organic pollution soil, including the reaction stake of several cylindrical bodies being arranged along contaminated soil pollutant transport direction and divider wall, the reaction stake includes outer pile body, interior pile body, the pile body surface of the outer pile body is provided with protrusion, the interior pile body is internally provided with infiltration filler, diaphragm is provided between the interior pile body and infiltration filler, the pile body surface of the outer pile body and the interior pile body is provided with perforative hole, the infiltration filler to it is lower and on be provided with zeolite layer, apatite layer, zeroth order iron layer, lkd layer and living soil layer.The utility model devises the reaction stake of multilayer divider wall system and special designing, it is capable of the further diffusion of effective block contaminant, each layer infiltration filler can cooperate, it not only can handle heavy metal ion, the organic pollutant that can also be volatilized in efficient process soil, realizes the comprehensive treatment of organic polluted soil.
Description
Technical field
The utility model relates to a kind of prosthetic devices of organic polluted soil, and in particular to a kind of renovation of organic pollution soil
Permeable reactive barrier device.
Background technique
Permeable reactive barrier technology is a kind of underground water based technique for in-situ remediation developed rapidly in recent years, permeable reactive
Wall technology can effectively remove the polluters such as heavy metal, inorganic anion, organic matter in underground water, before having good application
Scape.Permeable reactive barrier is the reaction material in-situ treatment system of an obstruction property, it is by reaction material perpendicular to contaminated zone
Flow direction place, when this contaminated zone flows through reaction wall, with reaction material occur physics, chemistry the effects of and be degraded,
Absorption, precipitating or removal, handle contaminated zone.
CN201420696346.5 discloses a kind of horizontal permeable reactive barrier for soil remediation, the reaction wall packet
Permeable reaction column is included, and the sandy gravel stratum being filled in permeable reaction column；It is anti-in the sandy gravel stratum and permeability
The centre of Ying Zhu is provided with graphite anode electrode, and infiltration network is provided among sandy gravel stratum, is provided with cathode electrode in infiltration network；
FeO, basic zeolite layer and adsorbent material are filled between the infiltration network and cathode electrode.The utility model is used in reaction wall
Electric repair method repairs contaminated soil, it can be difficult to being applied to the soil remediation of extensive organic contamination.
The stake formula permeable reactive barrier that CN201520907343.6 discloses a kind of arc shooting repairs system, including infiltration
React stake and water fender, the permeable reactive stake includes a tubular pile body and is filled in the intracorporal infiltration of tubular stake
Filler, the two sides of the tubular pile body are symmetrically arranged with indent caulking groove in the axial direction, between the water fender and permeable reactive stake
Whole arc-shaped shape is connected every setting and water fender inlay card is fixed in indent caulking groove, when underground water flows through system, in waterpower
Under the driving of power, bulk water phase enters the high infiltration filler of infiltration coefficient and is repaired.The technical solution can be to deeper subsurface
Water is repaired, and can be replaced in time at the position of damage, however, it is also difficult to using the soil remediation of organic contamination.
In conclusion the prior art still lack it is a kind of can the pollution of large scale processing organic soil permeable reactive barrier.
Utility model content
The utility model aim is in view of the deficiencies of the prior art, to provide a kind of the permeable anti-of renovation of organic pollution soil
Wall device is answered, the reaction stake including multilayer divider wall system and special designing can while capable of sufficiently controlling contaminated area
Large-scale organic soil pollution is effectively treated.
A kind of permeable reactive barrier device of renovation of organic pollution soil, including set along contaminated soil pollutant transport direction
The reaction stake for several cylindrical bodies set and divider wall, the reaction stake include outer pile body, interior pile body, the pile body of the outer pile body
Surface is provided with protrusion, and the interior pile body is internally provided with infiltration filler, be provided between the interior pile body and infiltration filler every
The pile body surface of film, the outer pile body and the interior pile body is provided with perforative hole, the infiltration filler to lower and upper setting
There are zeolite layer, apatite layer, zeroth order iron layer, lkd layer and living soil layer.
Outer pile body can prevent soil corrosion, and protrusion can increase the frictional force with soil, prevent from burying and topple in the soil
And sliding, diaphragm can prevent filler from exosmosing, the bootable organic pollutant of described hole enters inside reaction stake to be sent out with infiltration filler
Raw reaction.Zeolite layer as matrix, can bearing capacity with higher, other fillers above can be carried, meanwhile, zeolite layer
Physical absorption effect with higher, the permeable reactive barrier based on it can effectively adsorb the Cr VI in water, and
And it not will cause environment side effect.Zeroth order iron layer is from a wealth of sources, cheap, has stronger reducing power, uses Zero-valent Iron
The permeable reactive wall technology of layer filling has been widely used in the underground that object etc. is closed containing heavy metal, petroleum hydrocarbon, nitryl aromatic
The processing of water.Therefore, the usage amount of zeroth order iron layer is the largest.Zeolite layer but under the action of underground water washes away for a long time, quilt
The Cr VI of zeolite layer absorption can part desorb so that repairing effect is difficult to reach perfect condition, meanwhile, zeroth order iron layer density compared with
Greatly, when its partial size is less than the gap of permeable reactive foundation of wall filler, over time, the movement of water flow, Zero-valent Iron
Layer can move down loss, to destroy the reasonable interstitital texture of permeable reactive wall, influence treatment effect.Therefore, in zeolite layer
One layer of apatite layer is set between zeroth order iron layer, and the apatite layer is highdensity hydroxyapatite layer, hydroxyapatite
The bearing capacity of layer is suitable with zeolite layer, and the aperture of the aperture ratio zeolite layer of hydroxyapatite layer is much smaller, can not only help
Help carrying zeroth order iron layer, additionally it is possible to prevent zeroth order iron layer from moving down, and apatite layer itself has adsorption capacity, can assist
The absorption of boiling bubble stone layer, enables the heavy metal ion adsorbed in zeolite layer that can be held up.Lkd layer has lye, such as
Fruit organic gas enters inside reaction stake, it will rises along cylinder, is absorbed by lkd layer, organic soil dirt can be effectively treated
Dye.Living soil layer reacts stake for ground sealing, simple and convenient, can keep the integrality and safety of filler.
Preferably, the zeolite layer, the apatite layer, the zeroth order iron layer, the lkd layer and the active soil
The ratio between thickness of earth layer is (1-2): (2-3): (5-8): (1-2): (1-3), it is preferred that zeolite layer, apatite layer, Zero-valent Iron
The ratio between thickness of layer, lkd layer and living soil layer is 1:2:5:2:1.
Preferably, the protrusion is prismatic or triangular pyramid type.By the soil of organic gaseous contamination than more loose, have
Mobility, therefore, prismatic or triangular pyramid type can be pierced into soil, be better protected from reaction stake offset.
Preferably, the pile body of the outer pile body and the interior pile body is provided with perforative hole, gas may make to enter
The reaction stake is contacted with the infiltration filler, and the perforated area of described hole accounts for the cylindrical sides surface face of the outer pile body
Product 10-20%.It can guarantee that pollutant can enter the interior of reaction stake in the outer pile body and the air-locked situation of interior pile body
Portion.
Preferably, the outer pile body is porous ceramics shell, the interior pile body is Alveolate activated carbon layer.Porous ceramics
All there is porous structure with Alveolate activated carbon layer, organic pollutant can be promoted to penetrate into reaction stake and reacted.
Hole ceramics bracket has certain rigidity, has many anti-pressure abilities, can prevent soil extruding from causing reaction stake deformation, bee
Nest shaped activated carbon layer can carry out preliminary treatment to organic pollutant, meanwhile, it can form preferable fitting with porous ceramics, one
A is SI material, and one is C-material, the framework of more firm reaction stake is capable of forming, so that reaction stake is relatively stable.
Preferably, the ratio between thickness of the porous ceramics shell and the active carbon layer (1-2): 1.Porous ceramics shell
Amount should be no less than the thickness of active carbon, be not so difficult to carry, and if porous ceramics shell is blocked up, gas osmotic effect is not
It is good.
Preferably, the reaction stake is provided with the first reaction stake layer, second instead along contaminated soil pollutant transport direction
Stake layer and third is answered to react stake layer, the divider wall includes the first divider wall, the second divider wall, third divider wall, described first
Divider wall is set between the first reaction stake layer and the second reaction stake layer, and it is anti-that second divider wall is set to described second
Stake layer and the third is answered to react between stake layer, the third divider wall reacts the same cambered surface of stake layer with third.
Multiple divider wall systems are arranged in the utility model, are capable of the further diffusion of effective block contaminant, and stage by stage
Organic pollutant is handled, organic matter is enabled to be fully isolated in contaminated area.
Preferably, first divider wall and second divider wall are semi-transparent wall, the third divider wall is impermeable
Wall.First divider wall and second divider wall can allow the pollutant in soil to penetrate, and the third is isolated
Wall is impermeable wall, pollutant can be limited in Polluted area.
The beneficial effects of the utility model have:
(1) the utility model devises the reaction stake of multilayer divider wall system and special designing, can effectively stop to pollute
While capable of sufficiently controlling contaminated area, big rule are effectively treated in the further diffusion of object, and treatment by stages organic pollutant
The pollution of mould organic soil.
(2) the reaction stake composite multi-layer filler of the utility model, each layer infiltration filler can cooperate, can not only locate
Manage heavy metal ion, additionally it is possible to which the organic pollutant to volatilize in efficient process soil realizes the Synthetic of organic polluted soil
Reason.
Detailed description of the invention
Fig. 1 reaction wall three dimensional structure diagram；
Fig. 2 reaction wall inner stuffing structural schematic diagram；
Fig. 3 reaction wall layout drawing；
Appended drawing reference: reaction stake 1, first reacts stake layer 101, second and reacts stake layer 102, third reaction stake layer 103, isolation
Wall 2, the first divider wall 201, the second divider wall 202, third divider wall 203, contaminated soil 3, protrusion 4, hole 5, outer pile body 6,
Interior pile body 7, diaphragm 8, zeolite layer 9, apatite layer 10, zeroth order iron layer 11, lkd layer 12, living soil layer 13.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
A kind of permeable reactive barrier device of renovation of organic pollution soil, as shown in Figure 1, including being polluted along contaminated soil 3
The reaction stake 1 of several cylindrical bodies of object direction of motion setting and divider wall 2, the reaction stake 1 include outer pile body 6, interior pile body
7, the outer pile body 6 is porous ceramics shell, can prevent soil corrosion, and the pile body surface of the outer pile body 6 is provided with protrusion 4,
The frictional force with soil can be increased, prevent from burying and occur toppling over and sliding in the soil, the interior pile body 7 is Alveolate activated carbon
Layer, the interior pile body 7 are internally provided with infiltration filler, are provided with diaphragm 8 between the interior pile body 7 and infiltration filler, diaphragm 8 can
Prevent filler from exosmosing.The pile body surface of the outer pile body 6 and the interior pile body 7 is provided with perforative hole 5, described hole 5
Perforated area accounts for the cylindrical sides surface area 10-20% of the outer pile body 1.The bootable organic pollutant of described hole 5 into
Enter to react 1 inside of stake to react with infiltration filler.As shown in figure 3, the infiltration filler to it is lower and on be provided with zeolite layer 9,
Apatite layer 10, zeroth order iron layer 11, lkd layer 12 and living soil layer 13, preferably, zeolite layer 9, apatite layer 10, zeroth order
The ratio between thickness of iron layer 11, lkd layer 12 and living soil layer 13 is (1-2): (2-3): (5-8): (1-2): (1-3), preferably
, the ratio between zeolite layer 9, apatite layer 10, zeroth order iron layer 11, lkd layer 12 and thickness of living soil layer 13 are 1:2:5:2:1.
Zeolite layer as matrix, can bearing capacity with higher, other fillers above can be carried, meanwhile, zeolite
Layer physical absorption effect with higher, the permeable reactive barrier based on it can effectively adsorb the Cr VI in water,
And environment side effect is not will cause.Zeroth order iron layer is from a wealth of sources, cheap, has stronger reducing power, uses zeroth order
The permeable reactive wall technology of iron layer filling has been widely used in the ground that object etc. is closed containing heavy metal, petroleum hydrocarbon, nitryl aromatic
The processing being lauched.Therefore, the usage amount of zeroth order iron layer is the largest.Zeolite layer 9 but under the action of underground water washes away for a long time,
The Cr VI adsorbed by zeolite layer 9 can be desorbed partially, so that repairing effect is difficult to reach perfect condition, meanwhile, zeroth order iron layer 11
Density is larger, when its partial size is less than the gap of permeable reactive foundation of wall filler, over time, the movement of water flow,
Zeroth order iron layer can move down loss, to destroy the reasonable interstitital texture of permeable reactive wall, influence treatment effect.Therefore, exist
One layer of apatite layer 10 is set between zeolite layer 9 and zeroth order iron layer 11, and the apatite layer 10 is highdensity hydroxyapatite
Layer, the bearing capacity of hydroxyapatite layer is suitable with zeolite layer, and the aperture of the aperture ratio zeolite layer of hydroxyapatite layer is small very
It is more, it can not only help to carry zeroth order iron layer 11, additionally it is possible to prevent zeroth order iron layer 11 from moving down, and apatite layer 10 itself
With adsorption capacity, zeolite layer 9 can be assisted to adsorb, the heavy metal ion adsorbed in zeolite layer 9 can be protected
It handles.Lkd layer 12 has lye, if organic gas enters inside reaction stake 1, it will rise along cylinder, by lkd layer 12
It absorbs, organic soil pollution can be effectively treated.Living soil layer 13 reacts stake 1 for ground sealing, simple and convenient, can keep
The integrality and safety of filler.
As preferred embodiment, described raised 4 be prismatic or triangular pyramid type.Compared by the soil of organic gaseous contamination
It is loose, there is mobility, therefore, prismatic or triangular pyramidal can be pierced into soil, be better protected from reaction stake offset.
As preferred embodiment, the outer pile body 6 is porous ceramics shell, and the interior pile body 7 is Alveolate activated carbon
Layer.The ratio between the thickness of the porous ceramics shell and the active carbon layer (1-2): 1.
As preferred embodiment, as shown in Fig. 2, the reaction stake 1 is provided with along 3 pollutant transport direction of contaminated soil
First reaction stake layer 101, second reacts stake layer 102 and third reacts stake layer 103, and the divider wall 2 includes the first divider wall
201, the second divider wall 202, third divider wall 203, first divider wall 201 are set to the first reaction 101 and of stake layer
Between second reaction stake layer 102, second divider wall 202 is set to the second reaction stake layer 102 and third reaction
Between stake layer 103, the third divider wall 203 reacts the same cambered surface of stake layer 103 with third.
Multiple divider wall systems are arranged in the utility model, are capable of the further diffusion of effective block contaminant, and stage by stage
Organic pollutant is handled, organic matter is enabled to be fully isolated in contaminated area.
Preferably, first divider wall 201 and second divider wall 202 are semi-transparent wall, the third divider wall
203 be impermeable wall.First divider wall 201 and second divider wall 202 can allow the pollutant in soil to penetrate,
So that pollutant reacts with infiltration filler, and the third divider wall is impermeable wall 202, pollutant can be limited in dirt
Contaminate region.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, although
It is used some specific terms in this specification, these terms are merely for convenience of description, not to the utility model structure
At any restrictions.
Claims (8)
1. a kind of permeable reactive barrier device of renovation of organic pollution soil, which is characterized in that including along contaminated soil pollutant
The reaction stake and divider wall, the reaction stake of several cylindrical bodies of direction of motion setting include outer pile body, interior pile body, it is described outside
The pile body surface of pile body is provided with protrusion, and the interior pile body is internally provided with infiltration filler, the interior pile body and infiltration filler it
Between be provided with diaphragm, the pile body surface of the outer pile body and the interior pile body is provided with perforative hole, and the infiltration filler is extremely
Zeolite layer, apatite layer, zeroth order iron layer, lkd layer and living soil layer are provided on down.
2. permeable reactive barrier device according to claim 1, which is characterized in that the zeolite layer, the apatite layer,
The ratio between thickness of the zeroth order iron layer, the lkd layer and the living soil layer is 1-2:2-3:5-8:1-2:1-3.
3. permeable reactive barrier device according to claim 2, which is characterized in that the protrusion is prismatic or pyrometric cone
Type.
4. permeable reactive barrier device according to claim 2, which is characterized in that the outer pile body and the interior pile body
Pile body is provided with perforative hole, and the perforated area of described hole accounts for the cylindrical sides surface area 10- of the outer pile body
20%.
5. permeable reactive barrier device according to claim 2 or 4, which is characterized in that the outer pile body is porous ceramics
Shell, the interior pile body are Alveolate activated carbon layer.
6. permeable reactive barrier device according to claim 5, which is characterized in that the porous ceramics shell and the work
The ratio between the thickness of property layer of charcoal 1-2:1.
7. permeable reactive barrier device according to claim 1 or 2, which is characterized in that the reaction stake is along contaminated soil
It includes that pollutant transport direction, which is provided with the first reaction stake layer, the second reaction stake layer and third reaction stake layer, the divider wall,
One divider wall, the second divider wall, third divider wall, first divider wall are set to the first reaction stake layer and the second reaction
Between stake layer, second divider wall is set between the second reaction stake layer and third reaction stake layer, the third
Divider wall reacts the same cambered surface of stake layer with third.
8. permeable reactive barrier device according to claim 7, which is characterized in that first divider wall and described second
Divider wall is semi-transparent wall, and the third divider wall is impermeable wall.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233071A (en) * | 2020-01-20 | 2020-06-05 | 中新曜昂环境修复(江苏)有限公司 | Composite PRB and method for treating heavy metal and organic pollutants in underground water |
| CN111618085A (en) * | 2020-07-02 | 2020-09-04 | 广州市金龙峰环保设备工程股份有限公司 | Heavy metal polluted farmland remediation system and application method thereof |
| CN113292120A (en) * | 2021-06-30 | 2021-08-24 | 安徽省通源环境节能股份有限公司 | Controllable infiltration system and infiltration mechanism for soil and underground water remediation |
| CN113976603A (en) * | 2021-11-08 | 2022-01-28 | 北京艾孚润德环境科技有限责任公司 | In-situ soil remediation process for treating underground water based on multilayer reaction wall technology |
| CN114054484A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Permeable reactive barrier and method for repairing polluted underground water by permeable reactive barrier |
-
2018
- 2018-11-30 CN CN201822009946.0U patent/CN209222868U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233071A (en) * | 2020-01-20 | 2020-06-05 | 中新曜昂环境修复(江苏)有限公司 | Composite PRB and method for treating heavy metal and organic pollutants in underground water |
| CN111618085A (en) * | 2020-07-02 | 2020-09-04 | 广州市金龙峰环保设备工程股份有限公司 | Heavy metal polluted farmland remediation system and application method thereof |
| CN111618085B (en) * | 2020-07-02 | 2021-01-15 | 广州市金龙峰环保设备工程股份有限公司 | Heavy metal polluted farmland remediation system and application method thereof |
| CN114054484A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Permeable reactive barrier and method for repairing polluted underground water by permeable reactive barrier |
| CN113292120A (en) * | 2021-06-30 | 2021-08-24 | 安徽省通源环境节能股份有限公司 | Controllable infiltration system and infiltration mechanism for soil and underground water remediation |
| CN113976603A (en) * | 2021-11-08 | 2022-01-28 | 北京艾孚润德环境科技有限责任公司 | In-situ soil remediation process for treating underground water based on multilayer reaction wall technology |
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