CN109622584A - A kind of heavy metal-polluted soil enrichment extraction element and extracting method based on soxhlet extraction - Google Patents
A kind of heavy metal-polluted soil enrichment extraction element and extracting method based on soxhlet extraction Download PDFInfo
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- CN109622584A CN109622584A CN201811607045.XA CN201811607045A CN109622584A CN 109622584 A CN109622584 A CN 109622584A CN 201811607045 A CN201811607045 A CN 201811607045A CN 109622584 A CN109622584 A CN 109622584A
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- Prior art keywords
- extraction
- heavy metal
- pipe
- elution
- soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
Abstract
The present invention relates to a kind of, and the heavy metal-polluted soil based on soxhlet extraction is enriched with extraction element, comprising: having heaters is arranged in extraction part, the extraction part outside, and the extraction part can be by the separation of heavy metal ions in soil；Condensing part, at the top of extraction part, a small amount of heavy metal ion in the vapor after heating carries out reextraction by condensing mode for the condensing part setting；Elute component, the elution component includes elution pipe, screen pipe and collects hole, the hole outside spacers that collect are provided with several screen pipes, and described screen pipe one end is connected with elution pipe, can be collected the mixed liquor that soil is washed after drenching is carried out by elution pipe to collecting in hole by screen pipe；The present invention also provides a kind of heavy metal-polluted soil extracting methods.
Description
Technical field
The present invention relates to a kind of extraction elements more particularly to a kind of heavy metal-polluted soil enrichment based on soxhlet extraction to extract dress
It sets and extracting method.
Background technique
Soil is basis for the survival of mankind, and heavy metal is difficult to restore within the cracking time to the pollution of soil, and
And agricultural product can be entered by concerned foodstuff chain, the safety of the mankind is finally threatened, heavy metal pollution of soil refers to that the mankind are living
Dynamic, the content of minor metallic element in the soil in soil is more than background value, and too high levels caused by excess deposition are referred to as
For heavy metal pollution of soil, for the soil in some areas by heavy metal pollution, the crop heavy metal content for making to grow thereon is super
Mark, influences human health.
Traditional landfill device, is eluted by eluent, cannot achieve heavy metal in soil from
The enrichment of son is extracted, and extraction effect is poor, and traditional landfill device is not to be extracted by cable-styled mode, and do not pass through
The elution pipe range phase is buried in the soil, extraction operation is more troublesome, not very practical.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of heavy metal-polluted soil enrichment extraction dress based on soxhlet extraction
It sets and extracting method.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of heavy metal-polluted soil based on soxhlet extraction is rich
Collect extraction element, extract part, the extraction part is hollow structure, and having heaters, the extraction part is arranged on the outside of the extraction part
It can be by the separation of heavy metal ions in soil；Condensing part, vapor of the condensing part setting on the upside of extraction part, after heating
In a small amount of heavy metal ion reextraction is carried out by condensing mode；Component is eluted, the elution component can will be in soil
Heavy metal ion carry out elution collection.
In a preferred embodiment of the present invention, the elution component includes screen pipe and manifold, the manifold outside
It is arranged at intervals with several screen pipes.
In a preferred embodiment of the present invention, the elution component further includes elution pipe, and the elution pipe is connected to described
One end of screen pipe can be collected the mixed liquor that soil is washed after leaching is carried out by elution pipe to manifold by screen pipe.
In a preferred embodiment of the present invention, the height of the elution pipe is greater than the height of the extraction part.
In a preferred embodiment of the present invention, the screen pipe outside spacers are provided with several water holes, and the water hole
On be provided with filter membrane.
In a preferred embodiment of the present invention, the elution pipe outside spacers are provided with several through-holes.
In a preferred embodiment of the present invention, solar panel is provided at the top of the condensing part.
In a preferred embodiment of the present invention, the mixed liquor in the manifold is pumped into extraction part by water pump.
In order to achieve the above objectives, another technical solution that the present invention uses are as follows: a kind of landfill method, including it is following
Step:
(1) soil is drilled out into the hole that diameter is greater than manifold diameter, then screen pipe horizontal direction is nuzzled in soil in advance,
Manifold vertical direction is put into drilling；
(2) then elution pipe is inserted into soil along the vertical direction, elution pipe is arranged on the outside of manifold, along elution pipe week
To distribution, multiple elution pipes form circular configuration, and manifold side is connected with water tank by water pipe；
(3) first to extraction part in be added water and eluent mixed liquor, by heater to extraction part in mixed liquor into
Row heating evaporation forms steam and is cooled down after steam rises to condensing part position by condensing part；
(4) water droplet being cooled into enters elution pipe by condenser pipe, elutes to soil, makes heavy metal ion enrichment
It is distributed in mixed liquor, then mixed liquor is entered in manifold by screen pipe, and the height for eluting pipe is higher than the height of extraction part,
It can make mixed liquor that there is certain pressure, mixed liquor is accelerated to enter the speed in manifold；
(5) mixed liquor in manifold is pumped into extraction part by water pump, after Extraction of Heavy Metals precipitating, part is not precipitated
Heavy metal ion, by heater heated again formed vapor rise, then by condensation enter elution pipe it is laggard
Row reextraction；
(6) by repeatedly extracting to the elution of heavy metal-polluted soil, realize that the enrichment of heavy metal-polluted soil is extracted.
In a preferred embodiment of the present invention, the water tank in step (2) is connected on extraction part, when the rainy day, in soil
The water contained is more, the water extracted in part can be stored in water tank by water tank；Or/and
When fine day, water is less in soil, and the mixed liquor of the heavy metal stored in water tank and water is pumped into extraction by water pump
Pickup carries out Extraction of Heavy Metals.
In a preferred embodiment of the present invention, heavy metal-polluted soil extraction extracts once every half a year.
The invention solves the defect existing in the background technology, the present invention have it is following the utility model has the advantages that
(1) heavy metal soil is eluted by eluent, Extraction of Heavy Metals is then carried out by cable-styled method, it can
Realize that the enrichment of heavy metal is extracted, extraction effect is preferable.
(2) in lessivation, the height for eluting pipe is higher than extraction part, and elution pipe can be made to carry out manifold by screen pipe
Interior mixed liquor has certain pressure, can make to elute eluent and water in pipe and accelerate into manifold, realize quickly leaching
Wash effect.
(3) elution pipe with manifold, screen pipe it is pre-buried in the soil, every time carry out heavy metal in soil extraction when, behaviour
Make simply, will not be in each Extraction of Heavy Metals, all to making holes in soil, pipe laying improves working efficiency.
(4) water tank can prevent the mixed liquor in extraction part excessive, and when the rainy day, water content is higher in soil, can incite somebody to action
Extraction part inner part mixed liquor is stored in water tank, and when fine day, soil moisture content is less, will contain a huge sum of money in water tank by water pump
The mixed liquor for belonging to ion is discharged into extraction part and is extracted, and improves Extraction of Heavy Metals effect.
(5) elution pipe insertion soil in, formed circular configuration, can to elution pipe on the inside of bulk zone in soil into
Row elution to realize the soil of single extraction large area, and realizes mixed liquor in extraction part by condensing part and heater
Repeatedly extraction improves heavy metal-polluted soil and elutes effect, realizes that heavy metal accumulation extracts.
(6) by solar panel, it can be realized the power supply of extraction element, the rainy day can also be stored up by solar panel
The electricity deposited is worked normally, and realizes the sustainable development and clean utilization of resource.
(7) several water holes are provided on the outside of screen pipe, the soil after capable of eluting screen pipe passes through with water mixed liquid
Water hole infiltrates into manifold, and the filter membrane on water hole, can mud in filtration fraction mixed liquor, prevent excessive mud from accumulating
In manifold, the ability decline of storage mixed liquor in manifold is caused, water level rises, to prevent from causing elution pipe and collecting
Pressure difference between device becomes smaller, and then the heavy metal mixed solution improved after elution enters the rate in manifold.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the partial structural diagram of the preferred embodiment of the present invention；
Fig. 2 is the screen pipe distribution schematic diagram of the preferred embodiment of the present invention；
Fig. 3 is the extraction part and heater structure schematic diagram of the preferred embodiment of the present invention；
Fig. 4 is the extraction part and water pipe position view of the preferred embodiment of the present invention；
Fig. 5 is the schematic partial cross-sectional view of the preferred embodiment of the present invention；
Fig. 6 is the elution pipe structural schematic diagram of another embodiment of the present invention；
In figure:
1, condensing part, 2 condenser pipes, 3, elution pipe, 4, manifold, 5, water tank, 6, screen pipe, 7, water pipe, 8, heater, 9,
Extract part, 10, bracket, 11, water pump, 12, through-hole.
Specific embodiment
Presently in connection with drawings and examples, the present invention is described in further detail, these attached drawings are simplified signal
Figure, the basic structure of the invention will be illustrated schematically only, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, it is a kind of based on soxhlet extraction heavy metal-polluted soil enrichment extraction element and
Extracting method, comprising: extraction part 9, condensing part 1 and elution component composition.
Specifically, extraction part 9 is hollow structure, extracts and having heaters 8 is set on the outside of part 9, extraction part 9 can be by soil
In separation of heavy metal ions, the setting of condensing part 1 is provided with bracket 10, passes through bracket in extraction part 9 upside, extraction 9 bottom of part
Extraction part 9 can be fixedly secured a small amount of heavy metal ion in 4 inside bottom of manifold, the vapor after heating by 10 to be passed through
Condensing mode carries out reextraction, and the heavy metal ion in soil can be carried out elution collection by elution component.
Further, elution component includes screen pipe 6 and manifold 4, and 4 outside spacers of manifold are provided with several filterings
Pipe 6, elution component further include elution pipe 3, and elution pipe 3 is connected to one end of screen pipe 6, can will pass through leaching by screen pipe 6
It washes the mixed liquor that the progress soil of pipe 3 is washed after leaching to collect to manifold 4, the mixed liquor in manifold 4 is pumped into extraction by water pump 11
In pickup 9.
In a preferred embodiment of the present invention, 6 outside spacers of screen pipe are provided with several water holes, and are provided on water hole
The height of filter membrane, elution pipe 3 is greater than the height of extraction part 9.It is provided with several water holes on the outside of screen pipe 6, can will filter
Soil after pipe 6 elutes infiltrates into manifold 4 by water hole with water mixed liquid, and the filter membrane on water hole, being capable of filtration fraction
Mud in mixed liquor prevents excessive mud to be deposited in manifold 4, causes the ability decline of storage mixed liquor in manifold 4,
Water level rises, to prevent from that the pressure difference between elution pipe 3 and manifold 4 is caused to become smaller, and then it is mixed to improve the heavy metal after elution
It closes liquid and enters the rate in manifold 4.
As shown in fig. 6, elution pipe 3 can make y-type structure, elution 3 outside spacers of pipe setting in further embodiment of this invention
There are several through-holes 12, several through-holes 12 are positioned close to 4 side of manifold, eluent can be made to elute soil
When, it permeates mixed liquor towards manifold 4, improves eluent and elute effect, eluent can be organic acid, 1 top of condensing part
It is provided with solar panel, by solar panel, can be realized the power supply of extraction element, the rainy day can also pass through solar energy
The electricity of solar panel storage is worked normally, and realizes the sustainable development and clean utilization of resource.
In order to achieve the above objectives, another technical solution that the present invention uses are as follows: a kind of landfill method, including it is following
Step:
(1) soil is drilled out into the hole that diameter is greater than 4 diameter of manifold, then 6 horizontal direction of screen pipe is nuzzled soil in advance
Interior, 4 vertical direction of manifold is put into drilling；
(2) then elution pipe 3 is inserted into soil along the vertical direction, the setting of elution pipe 3 is in 4 outside of manifold, along elution
Pipe 3 is circumferentially distributed, and multiple elution pipes 3 form circular configuration, and 4 side of manifold is connected with water tank 5 by water pipe 7；
(3) mixed liquor of water and eluent, the mixed liquor extracted in part 9 by 8 Duis of heater are first added into extraction part 9
Heating evaporation formation steam is carried out to be cooled down after steam rises to 1 position of condensing part by condensing part 1；
(4) water droplet being cooled into enters elution pipe 3 by condenser pipe 2, and condenser pipe 2 is provided at circumferentially spaced along condensing part 1
In 1 bottom of condensing part, angle is 0-170 degree between 1 bottom end face of condenser pipe 2 and condensing part, and condensed mixed liquor can add
Speed flows into inside elution pipe 3, elutes to soil, is distributed in heavy metal ion enrichment in mixed liquor, and then mixed liquor is logical
It crosses screen pipe 6 to enter in manifold 4, the height of elution pipe 3 is higher than the height of extraction part 9, mixed liquor can be made to have certain
Pressure accelerates mixed liquor to enter the speed in manifold 4；
(5) mixed liquor in manifold 4 is pumped into extraction part 9 by water pump 11, after Extraction of Heavy Metals precipitating, part is not
The heavy metal ion of precipitating is heated by heater 8 and forms vapor rising again, is then entered elution by condensation and is managed
Reextraction is carried out after 3；
(6) by repeatedly extracting to the elution of heavy metal-polluted soil, realize that the enrichment of heavy metal-polluted soil is extracted.
Further, the water tank 5 in step (2) is connected on extraction part 9, and when the rainy day, the water contained in soil is more,
The water extracted in part 9 can be stored in water tank 5 by water tank 5；Or/and when fine day, water is less in soil, passes through water pump
The mixed liquor of the heavy metal stored in water tank 5 and water is pumped into extraction part 9 by 11 carries out Extraction of Heavy Metals；
Specifically, water tank 5 can prevent extraction part 9 in mixed liquor it is excessive, when the rainy day, in soil water content compared with
Extraction 9 inner part mixed liquor of part can be stored in water tank 5 by height, and when fine day, soil moisture content is less, and passing through water pump 11 will
The mixed liquor containing heavy metal ion is discharged into extraction part 9 and is extracted in water tank 5, improves Extraction of Heavy Metals effect.
Further, heavy metal-polluted soil extraction extracts once every half a year, and elution pipe 3 is inserted into soil, forms circle
Shape structure can elute the soil in the bulk zone on the inside of elution pipe 3, to realize the soil of single extraction large area
Earth, and the multiple extraction for extracting mixed liquor in part 9 is realized by condensing part 1 and heater 8, improve heavy metal-polluted soil elution effect
Fruit realizes that heavy metal accumulation extracts.
To sum up, eluting by eluent to heavy metal soil, heavy metal extraction is then carried out by cable-styled method
It taking, the enrichment that can be realized heavy metal is extracted, and extraction effect is preferable, and in lessivation, the height of elution pipe 3 is higher than extraction part 9,
The mixed liquor that elution pipe 3 can be made to be carried out in manifold 4 by screen pipe 6 has certain pressure, can make to elute in pipe 3
Eluent and water accelerate into manifold 4, realize quickly elution effect, and elution pipe 3 and manifold 4, screen pipe 6 are embedded in soil
It is easy to operate when carrying out heavy metal in soil extraction every time in earth, will not in each Extraction of Heavy Metals, all to making holes in soil,
Pipe laying improves working efficiency.
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
1. a kind of heavy metal-polluted soil based on soxhlet extraction is enriched with extraction element, which is characterized in that
Extract part, the extraction part is hollow structure, extraction part outside setting having heaters, and the extraction part can will be native
Separation of heavy metal ions in earth；
Condensing part, on the upside of extraction part, a small amount of heavy metal ion in the vapor after heating passes through cold for the condensing part setting
Solidifying mode carries out reextraction；
Component is eluted, the heavy metal ion in soil can be carried out elution collection by the elution component.
2. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 1 is enriched with extraction element, it is characterised in that:
The elution component includes screen pipe and manifold, and the manifold outside spacers are provided with several screen pipes.
3. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 2 is enriched with extraction element, it is characterised in that:
The elution component further includes elution pipe, and the elution pipe is connected to one end of the screen pipe, can will be led to by screen pipe
The mixed liquor that elution pipe progress soil is washed after leaching is crossed to collect to manifold.
4. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 3 is enriched with extraction element, it is characterised in that:
The height of the elution pipe is greater than the height of the extraction part.
5. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 2 is enriched with extraction element, it is characterised in that:
The screen pipe outside spacers are provided with several water holes, and are provided with filter membrane on the water hole.
6. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 3 is enriched with extraction element, it is characterised in that:
The elution pipe outside spacers are provided with several through-holes.
7. a kind of heavy metal-polluted soil based on soxhlet extraction according to claim 2 is enriched with extraction element, it is characterised in that:
Solar panel is provided at the top of the condensing part.
8. a kind of use landfill method as claimed in claim 1, it is characterised in that: the following steps are included:
(1) soil is drilled out into the hole that diameter is greater than manifold diameter, screen pipe horizontal direction is nuzzled in soil in advance then, is collected
Device vertical direction is put into drilling；
(2) then elution pipe is inserted into soil along the vertical direction, elutes pipe and is arranged on the outside of manifold, circumferentially divided along elution pipe
Cloth, multiple elution pipes form circular configuration, and manifold side is connected with water tank by water pipe；
(3) mixed liquor of water and eluent is first added into extraction part, the mixed liquor in extraction part is added by heater
Thermal evaporation forms steam and is cooled down after steam rises to condensing part position by condensing part；
(4) water droplet being cooled into enters elution pipe by condenser pipe, elutes to soil, is distributed heavy metal ion enrichment
In mixed liquor, then mixed liquor is entered in manifold by screen pipe, and the height for eluting pipe is higher than the height of extraction part, can
Make mixed liquor that there is certain pressure, mixed liquor is accelerated to enter the speed in manifold；
(5) mixed liquor in manifold is pumped into extraction part by water pump, after Extraction of Heavy Metals precipitating, part is unprecipitated heavy
Metal ion is heated by heater and forms vapor rising again, carries out two after then entering elution pipe by condensation
Secondary extraction；
(6) by repeatedly extracting to the elution of heavy metal-polluted soil, realize that the enrichment of heavy metal-polluted soil is extracted.
9. a kind of heavy metal-polluted soil extracting method according to claim 8, it is characterised in that: the water tank in step (2) connects
It is connected on extraction part, when the rainy day, the water contained in soil is more, the water extracted in part can be stored in water tank by water tank
In；Or/and
When fine day, water is less in soil, and the mixed liquor of the heavy metal stored in water tank and water is pumped into extraction part by water pump
Carry out Extraction of Heavy Metals.
10. a kind of heavy metal-polluted soil extracting method according to claim 8 or claim 9, it is characterised in that: heavy metal-polluted soil extracts
It is extracted once every half a year.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607045.XA CN109622584B (en) | 2018-12-27 | 2018-12-27 | Soil heavy metal enrichment and extraction device and method based on cable extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607045.XA CN109622584B (en) | 2018-12-27 | 2018-12-27 | Soil heavy metal enrichment and extraction device and method based on cable extraction |
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| CN109622584A true CN109622584A (en) | 2019-04-16 |
| CN109622584B CN109622584B (en) | 2021-04-06 |
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