CN209716031U - A kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer - Google Patents
A kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer Download PDFInfo
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- CN209716031U CN209716031U CN201920546386.4U CN201920546386U CN209716031U CN 209716031 U CN209716031 U CN 209716031U CN 201920546386 U CN201920546386 U CN 201920546386U CN 209716031 U CN209716031 U CN 209716031U
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- improve
- barrier layer
- layer
- heavy metals
- soil moved
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- 239000002689 soil Substances 0.000 title claims abstract description 56
- 230000004888 barrier function Effects 0.000 title claims abstract description 21
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004746 geotextile Substances 0.000 claims description 14
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 229920006262 high density polyethylene film Polymers 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 36
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of heavy metals in farmland to pollute soil moved in improve the original reparation barrier layer, and barrier layer includes impermeable stratum and bottom cushion, and impermeable stratum is vertically arranged at excavation point surrounding, for stopping the heavy metal in contaminated soil to spread into new soil；Bottom cushion is layed in excavation point bottom, causes the secondary pollution of new soil for stopping to gush on underground water；Bottom cushion include two layers of package cloth and between package cloth for eliminating the occluding material layer of capillary phenomenon, occluding material layer with a thickness of 10~30cm.Using the barrier layer of the structure, the new soil after can effectively solving the problems, such as farmland soil moved in improve the original is polluted vulnerable to former contaminated soil.
Description
Technical field
The utility model belongs to technical field of soil remediation, and in particular to a kind of heavy metals in farmland pollution soil moved in improve the original reparation resistance
Interlayer.
Background technique
New-soil technology has been obtained in many countries as the peripheral doses technology of a kind of pair of high density pollution soil and answers
With the reparation that by Cd-polluted farmland is unfolded of such as Japan to remarkable ability valley sixties area, what major technique used is exactly soil improvement by importing soil from other places.
The basic process that new-soil technology is implemented is to replace contaminated soil using unpolluted soil, to remove dirt
It contaminates soil or reduces pollutant in soil concentration.Grown on soil crops after the completion of soil moved in improve the original, can be effectively reduced farming
Absorption and enrichment of the object to pollutant, to guarantee that the safety of crops is available.
Existing new-soil technology is restricted by execution conditions, cost, technology etc., for larger section, contaminated compared with heavy soil
Reparation, can not achieve the full soil moved in improve the original of entire section contaminated soil.After there have been contaminated old soil to soil moved in improve the original displacement in this way
Not comtaminated new soil secondary pollution.
Utility model content
For the above-mentioned prior art, the utility model provides a kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer, with
New soil after solving the problems, such as farmland soil moved in improve the original is polluted vulnerable to former contaminated soil.
In order to achieve the above object, the technical scheme adopted by the utility model is providing heavy metals in farmland pollutes soil moved in improve the original
It repairs and uses barrier layer, barrier layer includes the impermeable stratum for stopping surrounding pollution sources and the bottom for stopping bottom pollution sources
Bed course, impermeable stratum are vertically arranged at excavation point surrounding, and bottom cushion is layed in excavation point bottom；Bottom cushion includes two layers of packet
Wrap and between package cloth for eliminating the occluding material layer of capillary phenomenon, occluding material layer with a thickness of 10~
30cm。
Based on the above technical solution, the utility model can also do following improvement.
Further, impermeable stratum is the HDPE film with a thickness of 1~5mm or the hardening of cement wall with a thickness of 5~10mm.
Further, impermeable stratum upper end is reserved with the flange that width is 5~10cm.
Further, package cloth is geotextiles, and occluding material layer is cobblestone or gravel.
Further, package cloth is geotextiles, and occluding material layer is bentonite.
Further, it is provided with several rows in bottom cushion 2 and drains gabion 5, draining gabion 5 is vertically arranged, the upper end and bottom
The upper layer package cloth 21 of portion's bed course 2 connects, and lower layer's package cloth 21 that lower end passes through bottom cushion 2 protrudes into inside farmland massif.
Further, the upper layer package cloth 21 of bottom cushion 2 concaves towards the draining gabion 5.
Drain that gabion 5 is cylindrical or barrel-shaped, the geotextiles 51 by outside and the cobblestone that is wrapped in geotextiles 51
Or gravel 52 forms.
The beneficial effects of the utility model are:
1. the practical setting impermeable stratum that passes through on excavating point peripheral direction realizes barrier, excavation four can effectively avoid
Heavy metal ion in all contaminated soils is spread into the new soil after soil moved in improve the original, is blocked the pollution sources in peripheral direction, not will cause
The secondary pollution of new soil.
Subsoil and body of groundwater pair are eliminated in such a way that bottom cushion is set in vertical direction 2. practical
The effect of gushing in the capillary of upper layer of soil, meanwhile, the mode of occluding material layer is sandwiched by using the double-deck geotextiles, is formed permeable
Layer the case where for rainfall and irrigation, effectively lower can seep draining, it is therefore prevented that abundant precipitation and irrigate the occurrence of impregnating.
Detailed description of the invention
The cross-sectional view that Fig. 1 is occluding material layer when being cobblestone or gravel；
Fig. 2 is the cross-sectional view of bottom cushion；
The cross-sectional view that Fig. 3 is occluding material layer when being bentonite；
Fig. 4 is the cross-sectional view for draining gabion；
Wherein, 1, impermeable stratum；2, bottom cushion；21, cloth is wrapped up；22, occluding material layer；3, point is excavated；4, flange；5,
Drain gabion；51, geotextiles；52, cobblestone or gravel.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.
The utility model as shown in figures 1-4, provides a kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer, Er Qieben
Barrier layer in practical is mainly used for the soil moved in improve the original reparation in nonirrigated farmland.Barrier layer impermeable stratum 1 and bottom cushion 2 during this is practical, no
Pervious bed 1 is made of material impervious to water, such as density polyethylene film with high (HDPE film) or hardening of cement wall, using HDPE film
When, HDPE film with a thickness of 1~5mm, when using hardening of cement wall, hardening of cement wall with a thickness of 5~10mm.As shown in Figure 1,
Impermeable stratum 1 is layed in excavation 3 surroundings of point vertically, and it is recessed to leave after farmland topsoil to be repaired scoops away to excavate point 3
Hole, the depth for excavating point 3 is 0.5~1m；To prevent the impermeable material layer 1 when to landfill newly soil in point 4 is excavated from cuddling up in a heap,
This practical 1 upper end of impermeable material layer is reserved with the flange 4 that width is 5~10cm, is adjacent to out by impermeable material layer 1
After digging 3 four weekss of point, flange 4 is turned down, flange 4 is made to be adjacent to ground level, flange 4 can also be compressed with soil block if necessary, to prevent
Impermeable material layer 1 glides and cuddles up in a heap.Bottom cushion 2 is layed in 3 bottoms of excavation point, is gushed on underground water for stopping to keep away
Exempt to cause new native secondary pollution, as shown in Fig. 2, bottom cushion 2 includes two layers of package cloth 21 and is located between package cloth 21
For eliminating the occluding material layer 22 of capillary phenomenon, occluding material layer 22 with a thickness of 10~30cm.
In a kind of this practical preferred embodiment, as shown in Figure 1, the package cloth 21 in bottom cushion 2 uses geotextiles
Equal seepy materials are made, and occluding material layer 22 is made of cobblestone or gravel, and package cloth 21 can not only keep occluding material
The shape of layer 22, additionally it is possible to prevent the gap between soil clogging cobblestone or gravel；The partial size of cobblestone or gravel be in 4~
In the range of 8cm, in the range, there is biggish gap between cobblestone or gravel, can effectively eliminate and gush work in capillary
With, while ponding extra in upper layer of soil can be effectively excluded again, it not will cause root system of plant and rot, guarantee that plant can be normal
Growth.But if underground water is more, it is possible to bottom cushion 2 can be covered there is a situation where underground water, be based on this, this is practical
It is preferably also laid with drainpipe in the occluding material layer 22 being made of cobblestone or gravel, opens up drainage hole at the top of drainpipe, it is more
Remaining underground water is entered in drainpipe by drainage hole, and is discharged by drainpipe, will not occur underground water cover bottom cushion 2 and
The case where causing new soil pollution.
In this practical another preferred embodiment, as shown in figure 3, the package cloth 21 in bottom cushion 2 is geotextiles,
Occluding material layer 22 is bentonite.Bentonite have the fluid-tight characteristic of antiseepage, can block underground water on gush, avoid underground
Water is contacted with new soil, not will cause the pollution of new soil.But the fluid-tight characteristic of bentonite will also result in the ponding of upper layer of soil
It cannot effectively exclude, if things go on like this, be easy to cause root system to rot, be unfavorable for the growth of plant.Based on this, this is practical preferably the bottom of at
It is provided with several rows in portion's bed course 2 and drains gabion 5, it is 2~3m that every row, which drains the spacing between gabion 5,.As shown in figure 4, draining
Gabion 5 is cylindrical or barrel-shaped, is made of the geotextiles 51 and the cobblestone or gravel 52 that is wrapped in geotextiles 51 in outside；
Draining gabion 5 is vertically arranged, and the upper end connects with the upper layer of bottom cushion 2 package cloth 21, and lower end passes through the lower layer of bottom cushion 2
Package cloth 21 protrudes into inside farmland massif；Draining gabion 5 can effectively exclude ponding, while will not generate asking of gushing on underground water again
Topic.
Although being described in detail in conjunction with attached drawing to specific embodiment of the present utility model, should not be construed as pair
The restriction of the protection scope of this patent.In range described by claims, those skilled in the art are without creative labor
The dynamic various modifications that can be made and deformation still belong to the protection scope of this patent.
Claims (8)
1. a kind of heavy metals in farmland pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the barrier layer includes for stopping four
The impermeable stratum (1) of all pollution sources and bottom cushion (2) for stopping bottom pollution sources, the impermeable stratum (1) set vertically
It is placed in and excavates point (3) surrounding, the bottom cushion (2), which is layed in, excavates point (3) bottom；The bottom cushion (2) includes two layers
Package cloth (21) and the occluding material layer (22) for being used to eliminate capillary phenomenon between package cloth (21), the occluding material
Layer (22) with a thickness of 10~30cm.
2. heavy metals in farmland according to claim 1 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: described waterproof
Layer (1) is the HDPE film with a thickness of 1~5mm or the hardening of cement wall with a thickness of 5~10mm.
3. heavy metals in farmland according to claim 2 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: described waterproof
Layer (1) upper end is reserved with the flange (4) that width is 5~10cm.
4. heavy metals in farmland according to claim 1 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the package cloth
It (21) is geotextiles, the occluding material layer (22) is cobblestone or gravel.
5. heavy metals in farmland according to claim 1 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the package cloth
It (21) is geotextiles, the occluding material layer (22) is bentonite.
6. heavy metals in farmland according to claim 1 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the bottom pad
It is provided with several rows in layer (2) and drains gabion (5), the draining gabion (5) is vertically arranged, the upper end and bottom cushion (2)
Upper layer package cloth (21) connects, and lower layer's package cloth (21) that lower end passes through bottom cushion (2) protrudes into inside farmland massif.
7. heavy metals in farmland according to claim 6 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the bottom pad
Upper layer package cloth (21) of layer (2) concaves towards the draining gabion (5).
8. heavy metals in farmland according to claim 6 or 7 pollutes soil moved in improve the original reparation barrier layer, it is characterised in that: the row
Water gabion (5) is cylindrical or barrel-shaped, the geotextiles (51) by outside and the cobblestone or gravel that are wrapped in geotextiles (51)
Stone (52) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920546386.4U CN209716031U (en) | 2019-04-19 | 2019-04-19 | A kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920546386.4U CN209716031U (en) | 2019-04-19 | 2019-04-19 | A kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209716031U true CN209716031U (en) | 2019-12-03 |
Family
ID=68672883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920546386.4U Active CN209716031U (en) | 2019-04-19 | 2019-04-19 | A kind of heavy metals in farmland pollution soil moved in improve the original reparation barrier layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209716031U (en) |
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2019
- 2019-04-19 CN CN201920546386.4U patent/CN209716031U/en active Active
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