CN206305191U - Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device - Google Patents
Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device Download PDFInfo
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- CN206305191U CN206305191U CN201621211698.2U CN201621211698U CN206305191U CN 206305191 U CN206305191 U CN 206305191U CN 201621211698 U CN201621211698 U CN 201621211698U CN 206305191 U CN206305191 U CN 206305191U
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- heavy metal
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Abstract
The utility model provides a kind of heavy metal-polluted soil electricity based on electronic geotextiles and promotees drip washing removal device, including water pump, electrolyte liquid storage tank, heavy metal adsorption device, parallel interval embedded multiple ekg electrodes and drainage channel in heavy-metal contaminated soil, drainage channel is connected located at heavy-metal contaminated soil side and with ekg electrode, guiding gutter is provided with ekg electrode, water pump, electrolyte liquid storage tank, heavy metal adsorption device passes sequentially through pipeline connection, the output end of water pump is connected by pipeline with one end of the guiding gutter of ekg electrode, the other end of guiding gutter is connected with drainage channel, drainage channel is connected by pipeline with heavy metal adsorption device.The utility model can lift the action effect of chemical leaching, promote the discharge of leacheate, while being prevented effectively from the problem of soil acid-base during electro reclamation.
Description
Technical field
The utility model is related to technical field of soil remediation, specifically a kind of heavy metal-polluted soil electricity based on electronic geotextiles
Promote drip washing removal device.
Background technology
With the development of industrial or agricultural, soil contamination problem is increasingly highlighted, and the life and health to the people causes serious prestige
The side of body, needs badly to being repaired and being administered by the soil of heavy metal pollution.Chemical leaching method is a kind of efficient heavy metal polluted soil
Earth restorative procedure, but not good to the soil removal effect of hypotonicity, and in-situ chemical drip washing is also faced with leacheate and is difficult discharge
Problem.Electro reclamation refers to that low-voltage DC is passed through in contaminated soil, pollutant under electric field action by electromigration and
The process that electrodialysis effect is migrated out from soil, is a kind of green, efficient new based technique for in-situ remediation, for hyposmosis
Property soil is especially suitable.If drip washing and electric repairing technique can effectively be used in combination, respective advantage can be played and collaboration is made
With.
On drip washing and electrokinetics, both existing being used in combination carries out heavy-metal contaminated soil repairing and treating at present
Method.A kind of utility model patent " electronic combine d bioremediation apparatus and method of the drip washing of heavy-metal contaminated soil " (application number：
201510298674.9) there is provided a kind of showering (ex-situ) method for heavy-metal contaminated soil, the method has 3
Individual committed step：Heavy-metal contaminated soil is dug out and adjusts pH, soil is put into drip washing groove and is carried out drip washing stirring and solid-liquid
Separate, the soil after drip washing is transferred into electro reclamation room carries out electrokinetic process.The method belongs to soil heterotopic restorative procedure, drip washing
It is successively independent in different devices with electro reclamation to carry out, fail to play the coupling between drip washing and electric repairing technique and make
With.
Utility model patent " using the elution device of electrical means intensive treatment heavy-metal contaminated soil " (patent No.：
201320357655.5) there is provided a kind of electric repairing technique and showering (ex-situ) device associated with elution technique.Drench
Wash is carried out in the same apparatus with electro reclamation.The device is circular configuration, and outer ring is anode, and circle center is negative electrode, heavy metal
From anode to cathodic migration, pipeline of the leacheate by pipeline from above device is flowed into.The design of the device is unfavorable for leacheate
Mass transfer diffusion in soil, and leacheate is from the quick discharge in soil, while the drip washing that heavy metal will be contained after drip washing
Waste liquid brings new pollution without treatment direct reuse.
A kind of utility model patent " persistency organic contaminant soil electric power reinforcing drip washing in-situ repairing device " (application
Number：201310055513.8) using iron and carbon respectively as anode and negative electrode, injector well and extracting are set in contaminated soil
Well, electronic reinforcing drip washing treatment is carried out to persistent organism contaminated soil.The device is in-situ immobilization (in-situ), for
Persistent Organic Pollutants in Soil treatment effect preferably, heavy metal is caused for heavy metal-polluted soil because unresolved negative electrode alkalizes
Chance alkali precipitation problem in soil near negative electrode, so that removal effect is not good.
Existing contaminated soil electrodynamics reinforcing leaching repairing method is primarily present following problem：(1) it is difficult to effectively rush
Leacheate is discharged as early as possible from soil, and avoid ohmic polarization and concentration polarization phenomenon, improve electricity and promote drip washing heavy metal
Clearance；(2) there is anode acidifying and negative electrode alkalization with being difficult to avoid that in soil, many researchs are by being added dropwise acid-base buffer agent control
Electrolyte ph, but there is potential hazard to environment in the use of these chemical agents；(3) in-situ immobilization (in-situ) method pair
The convenient degree requirement of installation operation at scene is higher, and how conveniently and efficiently to carry out the in-site installation of electrode and use to turn into restriction
One of factor.
Utility model content
Regarding to the issue above, promote drip washing the utility model proposes a kind of heavy metal-polluted soil electricity based on electronic geotextiles to go
Except device, to lift the action effect of chemical leaching, promote the discharge of leacheate, while soil during being prevented effectively from electro reclamation
The problem of earth soda acid, and can conveniently and efficiently carry out the in-site installation of electrode and use.
It is a kind of based on electronic geotextiles heavy metal-polluted soil electricity promote drip washing removal device, including water pump, electrolyte liquid storage tank,
Heavy metal adsorption device, parallel interval embedded multiple ekg electrodes and drainage channel in heavy-metal contaminated soil, draining are led to
Road is connected located at heavy-metal contaminated soil side and with ekg electrode, and guiding gutter, water pump, electrolyte liquid storage are provided with ekg electrode
Pond, heavy metal adsorption device pass sequentially through pipeline connection, and the output end of water pump is by pipeline and one end of the guiding gutter of ekg electrode
Connection, the other end of guiding gutter is connected with drainage channel, and drainage channel is connected by pipeline with heavy metal adsorption device.
Further, the ekg electrode is including hollow net support, the electronic geotextiles of cladding hollow net support, located at electronic soil
The electrolyte inlet and electrolyte outlet at work cloth two ends, the guiding gutter, water guide are formed after electronic geotextiles cladding hollow net support
Groove is respectively arranged at two ends with electrolyte inlet and electrolyte outlet, the electrolyte that the output end of water pump passes through pipeline and ekg electrode
Import is connected, and the electrolyte outlet of ekg electrode is connected with drainage channel, and drainage channel is connected by pipeline with heavy metal adsorption device
Connect.
The utility model has the following advantages that：
(1) the utility model using the electronic geotextile material EKG with conductive and water guide double grading as anode and
Cathode material, you can effectively conductive, again can effectively water guide quickly discharging the leacheate of cathodic enrichment；
(2) electronic geotextiles hollow electrolyte liquid volume capacity is smaller, and speed and the dirt of electrolyte flow are easily controlled with pump
The cleaning speed of thing is contaminated, is conducive to avoiding ohmic polarization phenomenon and concentration polarization phenomenon, improve electronic clearance；
(3) there is easy for installation, low cost due to electronic geotextiles EKG, be easy to switch the excellent of electrode and bath cleans
Point, so electronic geotextile material can be applied to switch electrode-circulation flushing United Technologies well, the soil that the scene of solution occurs
Earth soda acid and heavy metal leacheate are difficult the problem of discharge, and need not add acid-base neutralization agent and cushioning liquid control soil
PH, does not cause potential environmental pollution to contaminated soil, the characteristics of with environmental protection.
Brief description of the drawings
Fig. 1 is the structural representation of the heavy metal-polluted soil electricity rush drip washing removal device that the utility model is based on electronic geotextiles
Figure；
Fig. 2 is the structural representation of ekg electrode in the utility model.
In figure：1st, 2,3-ekg electrode, 4-heavy-metal contaminated soil, 5-drainage channel, 6-water pump, the storage of 7-electrolyte
Liquid pool, 8-heavy metal adsorption device, 9-hollow net support, 10-electronic geotextiles, 11-electrolyte inlet, 12-electrolyte goes out
Mouthful.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is carried out clearly and completely
Description.
Fig. 1 show the utility model be based on electronic geotextiles heavy metal-polluted soil electricity promote drip washing removal device one of them
The structural representation of embodiment, the heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device includes water pump 6, electricity
Solution liquid liquid storage tank 7, heavy metal adsorption device 8, in heavy-metal contaminated soil 4 the embedded multiple ekg electrodes of parallel interval (1,2,
3) drainage channel 5 located at the side of heavy-metal contaminated soil 4 for and with ekg electrode (1,2,3) connecting.
Please also refer to Fig. 2, electronic geotechnique of the ekg electrode (1,2,3) including hollow net support 9, cladding hollow net support 9
Cloth 10, electrolyte inlet 11 and electrolyte outlet 12 located at the two ends of electronic geotextiles 10, the hollow net support 9 can be cuboid
Shape body, is made up of metal material or other materials with support degree, shape after the cladding hollow net support 9 of electronic geotextiles 10
Into a closed elongated duct, i.e. guiding gutter, it is easy to electrolyte to run through electronic geotextiles 10 by Electro-kinetic Geosynthetics
(Electrokinetic Geosynthetics, EKG) is made.
Water pump 6, electrolyte liquid storage tank 7, heavy metal adsorption device 8 pass sequentially through pipeline connection, and the output end of water pump 6 passes through
Pipeline is connected with the electrolyte inlet 11 of ekg electrode (1,2,3), the electrolyte outlet 12 and drainage channel of ekg electrode (1,2,3)
5 connections, drainage channel 5 is connected by pipeline with heavy metal adsorption device 8.
Heavy metal adsorption device 8 can use small-sized ecological canal, in irrigation canals and ditches filling can effective Adsorption of Heavy Metals base
Material, such as charcoal, and plant heavy metal there is the wetland plant of cumulative function, such as wilson iris, thaliadeabata, calamus
Deng.
The utility model be based on electronic geotextiles heavy metal-polluted soil electricity promote drip washing removal device operation principle be：
First, to applying eluent in heavy-metal contaminated soil 4, the eluent can for sour (such as organic acid, inorganic acid),
Salt (such as FeCl3), chelating agent (such as EDTA), the one kind in surfactant (such as SDS), then by eluent and soil with turning over
Machine is mixed, in heavy metal in soil is desorbed into the soil liquid by drip washing；Due in soil parallel interval be embedded with and
The electronic geotextiles 10 of tool water guide and conductive characteristic, it can be used as electrodynamic anode and cathode material；0.2-4V/cm's
Intermittently power-on mode is used under potential gradient, makes the heavy metal of positively charged in soil by electromigration to cathodic migration, together
When also under electrodialysis effect as pore water is to cathodic migration, and be enriched with the electronic geotextiles of cathode material, water pump 6 opens
Open, the electrolyte in electrolyte liquid storage tank 7 is pumped into ekg electrode (1,2,3), be enriched with so inside electronic geotextiles 10
Heavy metal is acted on by the circulation flushing of electrolyte and migrates out soil；The electrolyte for developing enters drainage channel by overflow
5, the acid and alkaline electrolyte that anode and negative electrode are produced respectively is neutralized after mixing in drainage channel 5, and flows into a huge sum of money
The treatment of heavy metal is carried out in category adsorbent equipment 8, the leacheate after treatment enters electrolyte liquid storage tank 7, is recycled to be used in flushing
Electrode.
The utility model be based on electronic geotextile material EKG have water guide and conduction characteristic, with reference to electrolyte mixing and
Polarity of electrode switches, and can not only promote drip washing effect, again can effectively water guide quickly discharging the leacheate of cathodic enrichment, moreover it is possible to have
Effect avoids the problem of soil acid-base during electro reclamation.Additionally, EKG also has easy for installation, low cost, corrosion resistant spy
Property, the problems such as the in-site installation of electrode being solved well and is used.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to
It is any to belong to those skilled in the art in the technical scope that the utility model is disclosed in this, the change that can be readily occurred in
Change or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with power
The protection domain that profit is required is defined.
Claims (2)
1. a kind of heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device, it is characterised in that：Including water pump (6),
Electrolyte liquid storage tank (7), heavy metal adsorption device (8), the embedded multiple EKG of parallel interval in heavy-metal contaminated soil (4)
Electrode (1,2,3) and drainage channel (5), drainage channel (5) located at heavy-metal contaminated soil (4) side and with ekg electrode (1,
2nd, 3) connect, guiding gutter, water pump (6), electrolyte liquid storage tank (7), heavy metal adsorption device (8) are provided with ekg electrode (1,2,3)
Pipeline connection is passed sequentially through, the output end of water pump (6) is connected with one end of the guiding gutter of ekg electrode (1,2,3) by pipeline, led
The other end of tank is connected with drainage channel (5), and drainage channel (5) is connected by pipeline with heavy metal adsorption device (8).
2. the heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device as claimed in claim 1, it is characterised in that：
The ekg electrode (1,2,3) is including hollow net support (9), the electronic geotextiles (10) of cladding hollow net support (9), located at electronic soil
The electrolyte inlet (11) and electrolyte outlet (12) at work cloth (10) two ends, after electronic geotextiles (10) coat hollow net support (9)
Form the guiding gutter, guiding gutter is respectively arranged at two ends with electrolyte inlet (11) and electrolyte outlet (12), water pump (6) it is defeated
Go out end to be connected with the electrolyte inlet (11) of ekg electrode (1,2,3) by pipeline, the electrolyte outlet of ekg electrode (1,2,3)
(12) connected with drainage channel (5), drainage channel (5) is connected by pipeline with heavy metal adsorption device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211698.2U CN206305191U (en) | 2016-11-10 | 2016-11-10 | Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211698.2U CN206305191U (en) | 2016-11-10 | 2016-11-10 | Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206305191U true CN206305191U (en) | 2017-07-07 |
Family
ID=59243721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621211698.2U Withdrawn - After Issue CN206305191U (en) | 2016-11-10 | 2016-11-10 | Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206305191U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269835A (en) * | 2016-11-10 | 2017-01-04 | 长江水利委员会长江科学院 | Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device and method |
| CN107457266A (en) * | 2017-09-26 | 2017-12-12 | 常州大学 | A kind of heavy-metal contaminated soil repair system |
| CN109500078A (en) * | 2018-12-14 | 2019-03-22 | 浙江中地净土科技有限公司 | A kind of electro reclamation system of heavy metal contaminants |
-
2016
- 2016-11-10 CN CN201621211698.2U patent/CN206305191U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269835A (en) * | 2016-11-10 | 2017-01-04 | 长江水利委员会长江科学院 | Heavy metal-polluted soil electricity based on electronic geotextiles promotees drip washing removal device and method |
| CN107457266A (en) * | 2017-09-26 | 2017-12-12 | 常州大学 | A kind of heavy-metal contaminated soil repair system |
| CN107457266B (en) * | 2017-09-26 | 2019-11-12 | 常州大学 | A kind of heavy-metal contaminated soil repair system |
| CN109500078A (en) * | 2018-12-14 | 2019-03-22 | 浙江中地净土科技有限公司 | A kind of electro reclamation system of heavy metal contaminants |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170707 Effective date of abandoning: 20220712 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170707 Effective date of abandoning: 20220712 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |