CN206240929U - The dump leaching repair system of chromium-polluted soil - Google Patents
The dump leaching repair system of chromium-polluted soil Download PDFInfo
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- CN206240929U CN206240929U CN201621237482.3U CN201621237482U CN206240929U CN 206240929 U CN206240929 U CN 206240929U CN 201621237482 U CN201621237482 U CN 201621237482U CN 206240929 U CN206240929 U CN 206240929U
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- heap
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- polluted soil
- soaking pit
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Abstract
The utility model discloses a kind of dump leaching repair system of chromium-polluted soil, including：Heap soaking pit, it is built-up by brick basalis and the concrete surface layer being overlying on brick basalis；The heap soaking pit includes：Heap soaking pit body and anchoring groove；Anchoring groove is annular, around the outside of heap soaking pit body；Wherein, antiseepage film and geotextiles are equipped with the concrete surface layer of heap soaking pit body successively, and the edge of the antiseepage film and geotextiles stretches out heap soaking pit body and is fixed in anchoring groove；Chromium-polluted soil heap body, its heap is in heap soaking pit body；The spray piping of medicament and moisture, its upper surface for being layed in chromium-polluted soil heap body are repaired for feeding；Coating, it is covered in spray piping top, and edge stretches out heap soaking pit body and is fixed in anchoring groove.
Description
Technical field
The utility model is related to soil remediation field, specifically a kind of dystopy dump leaching for being applicable to chromium-polluted soil
Repair system.
Background technology
Heavy metal chromium in its long-term production and application, can cause one as a kind of industrial raw materials to soil environment
Fixed influence.Chromium is main with trivalent chromium in soil（Cr（III））And Cr VI（Cr（VI））Two kinds of valence states are present.Wherein, Cr
（III）It is the essential trace elements of the human body, bio-toxicity is only just shown at higher concentrations, is in the range of 6 ~ 11 in pH
Cr（III）The hydroxide of stabilization can be formed, and is wrapped on soil granular in the form of precipitating, the transfer ability in soil
It is very weak；And Cr（VI）With stronger carcinogenesis, the dissolubility in water is very high, and transfer ability is strong, and soil granular is inhaled to it
Attached ability, easily with water leaching polluted underground water system.
At present, use showering hexavalent chromium polluted soil remediation more.In conventional repair process, big multiple-project is to pollute
Soil is processed clearly during digging is transported to specific structures.Structures are generally concrete structure, it is necessary to take larger field
Ground space.Dispose place the infrastructure construction cycle is more long, high cost, be not suitable for using such disposal for middle-size and small-size project
Mode.After the completion of contaminated soil treatment, structures need to remove, and waste time and energy and high cost.In addition, the process of strange land disposal
In, the dust containing pollution of chromium is easily spilt into air, causes air pollution.Therefore, two are prevented to solve the above problems and
Secondary pollution, chromium-polluted soil repair process needs a kind of special dystopy disposal technology.
Utility model content
The purpose of this utility model is to provide the dump leaching repair system skill that a kind of chromium-polluted soil is repaired, to solve existing soil
Concrete structures used by earth repair system need occupied ground space big, the infrastructure construction cycle long, high cost, unfavorable
In middle-size and small-size project using, repair after the completion of the dismounting of structures need to waste time and energy and the technical problem such as cost is high, and in soil
During the dust containing chromium pollutant directly spills into air in earth processing procedure, the problem of air quality decline is caused.This disposal system
System simple structure, it is easy to implement, operating cost is low.
The dump leaching repair system of the chromium-polluted soil that the utility model is provided, including：
Heap soaking pit, it is built-up by brick basalis and the concrete surface layer being overlying on brick basalis；The dump leaching
Pond includes：Heap soaking pit body and anchoring groove；Anchoring groove is annular, around the outside of heap soaking pit body；Wherein, heap soaking pit body
Concrete surface layer on be equipped with antiseepage film and geotextiles successively, and the edge of the antiseepage film and geotextiles stretches out heap soaking pit
Body is simultaneously fixed in anchoring groove；
Chromium-polluted soil heap body, its heap is in heap soaking pit body；
The spray piping of medicament and moisture, its upper surface for being layed in chromium-polluted soil heap body are repaired for feeding；
Coating, it is covered in spray piping top, and edge stretches out heap soaking pit body and is fixed in anchoring groove.
Preferably, the thickness of concrete surface layer is 5 ~ 15cm.
Preferably, the antiseepage film is density polyethylene film with high.
Preferably, the geotextiles are 600g/m2Non-woven geotextile.
Preferably, a height of 1 ~ 5m of heap of the chromium-polluted soil heap body, the side slope ratio of chromium-polluted soil heap body is 1:1~1:
3。
Preferably, shower nozzle is laid in the spray piping outer surface, and 2 ~ 4 shower nozzles are laid in each section altogether, and shower nozzle spacing is pressed
Equal angular is configured.
Compared with prior art, it is of the present utility model it is a technical advantage that：
1st, effectively prevent airborne dust, it is to avoid secondary pollution, buy safely, clearly, environmental benefit is obvious.
2nd, system architecture is simple, and easy construction effectively reduces rehabilitation cost：The high density polyethylene (HDPE) that the utility model is used
Film, geotextiles, tarpaulin etc. are common materials in civil engineering, wide material sources, cheap, can be bought nearby, effectively contracting
Short construction period；Heap soaking pit builds speed soon, does not influence construction speed, and single heap soaking pit treating capacity is big and can reuse,
After contaminated soil mixes with medicament, banked up in heap soaking pit, it is not necessary to energy consumption, after the completion of soil remediation, salvage material, filled and led up simultaneously
Compacting soil, reduces rehabilitation cost.
3rd, applied widely, applicability is strong：Safety and stability, dump leaching reaction tank flexible structure can be according to place size
Length size is adjusted with treatment scale, the scope of application is wider, the treating capacity of dump leaching reaction tank is big, had extensively to repairing medicament
Adaptability, rehabilitation cost is low, short construction period, and engineering applicability is strong.
To sum up, the utility model repairs industry relevant criterion according to national contaminated site, devises a kind of chromium-polluted soil
Dystopy dump leaching disposal system, not only performs contaminated soil mixing, moisturizing, the overall process of reaction, and simple structure, construction party
Just, short construction period, low cost, can reuse, with preferable application prospect.
Brief description of the drawings
Fig. 1 is the flow chart of the dump leaching renovation technique that chromium-polluted soil of the present utility model is repaired；
Fig. 2 is the structural representation of the dump leaching repair system that chromium-polluted soil of the present utility model is repaired；
Fig. 3 is that the top view display spray piping of the dump leaching repair system that chromium-polluted soil of the present utility model is repaired is laid
Situation；
Fig. 4 is that the shower nozzle of the dump leaching repair system that chromium-polluted soil of the present utility model is repaired sets schematic diagram.
Specific embodiment
The utility model content is made further explanation and description below in conjunction with the accompanying drawings.
With reference to Fig. 2 and Fig. 3, the dump leaching repair system of chromium-polluted soil of the present utility model, including：
Heap soaking pit, it is by brick basalis 6 and the concrete surface layer 5 being overlying on brick basalis 6（Thickness be 5 ~
15cm）It is built-up；The heap soaking pit includes：Heap soaking pit body 10 and anchoring groove 8；Anchoring groove 8 is annular, around heap soaking pit sheet
The outside of body 10；Wherein, antiseepage film 4 and geotextiles 3 are equipped with the concrete surface layer 5 of heap soaking pit body 10 successively, and it is anti-
Ooze film 4（The density polyethylene film with high of thickness 15cm, GCL or composite geo-membrane）With geotextiles 3（600g/m2It is non-
Weaving geotextiles）Edge stretch out heap soaking pit body 10 and be fixed in anchoring groove 8；
Chromium-polluted soil heap body 2, its heap in the heap soaking pit body 10, typically, the heap a height of 1 of chromium-polluted soil heap body ~
5m, the side slope ratio of chromium-polluted soil heap body is 1:1~1:3；
The spray piping 7 of medicament and moisture, its upper surface for being layed in chromium-polluted soil heap body 2, spray are repaired for feeding
Shower pipe road 7 can be multiple, arranged in parallel.With reference to shown in Fig. 3 and 4, shower nozzle 70 is laid in the outer surface of spray piping 7, and each section is total to
2 ~ 4 shower nozzles are laid, shower nozzle spacing is configured in the same angle（Fig. 4 lays between 3 shower nozzles, each shower nozzle altogether for each section
Away from being 120 degree）.
Coating 1, it is covered in spray piping top, and edge stretches out heap soaking pit body and is fixed in anchoring groove
With reference to Fig. 1 and Fig. 2, the dump leaching disposal of above-mentioned chromium-polluted soil reparation comprises the following steps：
Step one, preparation of construction：To ensure being sufficiently mixed for contaminated soil and reducing agent, dump leaching before processing needs are being carried out
Carry out sieving approach.Sieving approach is carried out to waste material of buildings using sieving approach bucket.Degree of crushing is according to actual requirement, particle diameter one
As when 2 ~ 5cm, sieving approach Quality Inspector should periodically patrol, it is to avoid machinery construct in spite of illness, cause Sieving and casing unqualified,
Influence repairing effect.
Step 2, the design of heap soaking pit：According to the actual total side's amount of contaminated soil, the size of heap body is designed.According to contaminated soil
Actual earth volume, design reaction tank bottom is long, bottom width, top are long, top width size, and it is high to calculate heap body heap, heap general 1 ~ 5m high, heap body
Slope compares 1:1~1:Between 3；
V=1/3×H×(S1+S2+√S1×S2) (1)
In formula：V represents the volume of soil heap body, and the heap that H represents soil heap body is high, and S1 represents the bottom surface face of soil heap body
Product, S2 represents the upper bottom surface area of soil heap body.
Step 3, heap soaking pit are built by laying bricks or stones：Length size according to the heap soaking pit of design builds pond body, and smooth location is adopted
With the pond body of brick basalis, and laying 10cm thick concrete surface layer 8 outside brick pond body.The heap soaking pit includes：
Heap soaking pit body 10 and anchoring groove 8；Anchoring groove 8 is annular, is set around the outside of heap soaking pit body 10
Step 4, setting impervious barrier：Antiseepage film 4 is layed in concrete surface layer top, is HDPE film, and thickness 0.5 ~
3.0mm, antiseepage coefficient is less than 1.0 × 10-7cm/s；Geotextiles 3 are laid on HDPE film, quality selects 600 ~ 800g/cm2, HDPE
Film and geotextiles 3 should lay it is smooth, except cover basal layer in addition to, should by foundation ditch border outwards extend 0.3 ~ 0.5m.Also dependent on setting
Meter parameter manufacture respective material, the composite geo-membrane of thickness.
Step 5, heap body are banked up：By the chromium-polluted soil heap after treatment in heap soaking pit body 10, pollution of chromium soil is formed
Earth heap body 2.Conventional heap machinery of building has excavator, bull-dozer（Crawler type）With dumper etc..Heap machinery is built from 20t heavy type vapour
Car, builds 1 ~ 5m of stack height, and heap body is trapezoidal heap body, and length, width and height determine all in accordance with scene pollution earth volume.
Step 6, spray wash heap：Heap body is banked up after end, in stockyard surface layout spray piping 7.Pipe laying spacing root
Designed according to true reactor body size, generally 0.2 ~ 1.0m, it is specific to lay See Figure 3.It is increase flow velocity, shortens the duration, in spray
Shower nozzle 70 is laid by certain angle in the same cross-sectional of pipeline 7,3 shower nozzles 70 are laid in each section（Angle between each shower nozzle
It is 120 degree）, See Figure 4.Fed to chromium-polluted soil heap body by spray piping 7 and repair medicament（Such as：Ferrous salt, zeroth order iron powder
Deng）And moisture, carry out reparation reaction.
The top of the spray piping 7 laying coating 1 above reacted chromium-polluted soil heap body is being sprayed with windproof and rain proof
Water loss is prevented, the edge of coating 1 extends and imbeds fixed, complete covering chromium-polluted soil heap body 2 in anchoring groove 8, supports
Shield 3 ~ 5 days.
Step 7, heap unloading：By after dump leaching treatment, contaminated soil uniformly mixes and react with reduction medicament.It is treated
Pedotheque is gathered in journey, repairing effect and progress is grasped.Carry out the final place such as filling after detecting qualified soil heap unloading
Put.Unqualified soil is processed in then adding chromium-polluted soil heap body again.
The dump leaching repair system and renovation technique of the utility model chromium-polluted soil may be directly applied to hexavalent chromium polluted soil
Earth is repaired, but equally applicable to other heavy metals, metalloid, petroleum hydrocarbon, semi-volatile organic matter etc..
Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model
Protection domain not limited to this.Equivalent substitute or change that those skilled in the art are made on the basis of the utility model
Change, within protection domain of the present utility model.Protection domain of the present utility model is defined by claims.
Claims (6)
1. the dump leaching repair system of a kind of chromium-polluted soil, it is characterised in that including：
Heap soaking pit, it is built-up by brick basalis and the concrete surface layer being overlying on brick basalis；The heap soaking pit bag
Include：Heap soaking pit body and anchoring groove；Anchoring groove is annular, around the outside of heap soaking pit body；Wherein, heap soaking pit body is mixed
Antiseepage film and geotextiles are equipped with successively on solidifying soil concrete surface layer, and the edge of the antiseepage film and geotextiles stretches out heap soaking pit body
And be fixed in anchoring groove；
Chromium-polluted soil heap body, its heap is in heap soaking pit body；
The spray piping of medicament and moisture, its upper surface for being layed in chromium-polluted soil heap body are repaired for feeding；
Coating, it is covered in spray piping top, and edge stretches out heap soaking pit body and is fixed in anchoring groove.
2. the dump leaching repair system of chromium-polluted soil according to claim 1, it is characterised in that the thickness of concrete surface layer
It is 5 ~ 15cm to spend.
3. the dump leaching repair system of chromium-polluted soil according to claim 1, it is characterised in that the antiseepage film is highly dense
Degree polyethylene film.
4. the dump leaching repair system of chromium-polluted soil according to claim 1, it is characterised in that the geotextiles are
600g/m2Non-woven geotextile.
5. the dump leaching repair system of chromium-polluted soil according to claim 1, it is characterised in that the chromium-polluted soil heap
A height of 1 ~ the 5m of heap of body, the side slope ratio of chromium-polluted soil heap body is 1:1~1:3.
6. the dump leaching repair system of chromium-polluted soil according to claim 1, it is characterised in that the spray piping appearance
Shower nozzle is laid in face, and 2 ~ 4 shower nozzles are laid in each section altogether, and shower nozzle spacing is configured in the same angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237482.3U CN206240929U (en) | 2016-11-18 | 2016-11-18 | The dump leaching repair system of chromium-polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237482.3U CN206240929U (en) | 2016-11-18 | 2016-11-18 | The dump leaching repair system of chromium-polluted soil |
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| CN206240929U true CN206240929U (en) | 2017-06-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345801A (en) * | 2016-11-18 | 2017-01-25 | 北京高能时代环境技术股份有限公司 | Dump leaching restoration system and restoration process of chromium pollution soil |
| CN109024702A (en) * | 2018-09-30 | 2018-12-18 | 广东建科建设咨询有限公司 | Construction method and structure is isolated in contaminated soil |
| CN109047322A (en) * | 2018-09-10 | 2018-12-21 | 缙云县智禾环保科技有限公司 | A kind of soil remediation method |
-
2016
- 2016-11-18 CN CN201621237482.3U patent/CN206240929U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345801A (en) * | 2016-11-18 | 2017-01-25 | 北京高能时代环境技术股份有限公司 | Dump leaching restoration system and restoration process of chromium pollution soil |
| CN109047322A (en) * | 2018-09-10 | 2018-12-21 | 缙云县智禾环保科技有限公司 | A kind of soil remediation method |
| CN109047322B (en) * | 2018-09-10 | 2020-10-27 | 广东东日环保股份有限公司 | Soil remediation method |
| CN109024702A (en) * | 2018-09-30 | 2018-12-18 | 广东建科建设咨询有限公司 | Construction method and structure is isolated in contaminated soil |
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