CN109317506A - The method repaired the electric device of As polluted soil and repair As polluted soil - Google Patents
The method repaired the electric device of As polluted soil and repair As polluted soil Download PDFInfo
- Publication number
- CN109317506A CN109317506A CN201811028626.8A CN201811028626A CN109317506A CN 109317506 A CN109317506 A CN 109317506A CN 201811028626 A CN201811028626 A CN 201811028626A CN 109317506 A CN109317506 A CN 109317506A
- Authority
- CN
- China
- Prior art keywords
- soil
- polluted soil
- area
- humus
- repairing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of electric device for repairing As polluted soil and the methods for repairing As polluted soil, can apply to technical field of soil remediation.The present invention pre-processes As polluted soil by additional humus, improve the amount of mobility arsenic in soil, and As polluted soil is effectively repaired in conjunction with electrokinetic technique, operability and practicability of the electrokinetic technique in soil remediation application are improved, and is expected in the actual repair for being used in other cationic heavy metals of soil.The method of the present invention have many advantages, such as it is easy to operate, it is safe and reliable.In addition humus used in the present invention is a kind of Eco-friendly material, is largely existed in the environment, at low cost, without secondary pollution to soil.
Description
Technical field
The present invention relates to a kind of in-situ repairing device of As polluted soil and in-situ remediation methods, more particularly to a kind of arsenic
The electro reclamation device and electric repair method of contaminated soil are applied to technical field of soil remediation.
Background technique
Soil arsenic pollution is increasingly serious in recent years, and " the national Soil Pollution Investigation bulletin " of publication in 2016 points out soil
Earth arsenic pollution point exceeding standard rate is 2.7%, mainly by mining, metal smelt, illegal dumping, wood preservation, pesticide containing arsenic
Use and sludge irrigate etc. cause.Arsenic in soil has the characteristics that concealment, chronicity, irreversibility, estimates according to Allaway
It calculates, under field conditions (factors), the arsenic in soil, which completely disappears, about needed for 100 years.Therefore, if artificial processing enters not in time
Arsenic in soil, arsenic can be accumulated constantly in the soil, seriously threaten human health.
The conventional processing technique of As polluted soil mainly includes curing/stabilizing, Soil leaching, Vitrification etc..Although
As polluted soil can be effectively treated in these technologies, but has certain limitation, as curing/stabilizing technology exists by ring
Border factor changes bring and leaches risk, and the technologies such as Soil leaching technology and vitrifying all have at high cost, actual field application
The disadvantages of limited.
Electro reclamation (EK) technology is the based technique for in-situ remediation of the most prospect of rising in recent years, which can effectively repair
Low-permeability soil, main mechanism are electromigration, electrodialysis and electrophoresis.But electrokinetic technique (EK) can only remove can in soil
Mobile pollutant deals with and acquires a certain degree of difficulty for the pollutant of migration difference.In soil environment, arsenic is a variety of mines
The main component of object, including sulfide and oxide, such as mispickel (FeAsS), realgar (As4S4), orpiment (As2S3), arsenic bloom
(As2O3), scorodite (FeAsO4·2H2O) etc..A large amount of presence of these mineral reduce the mobility of arsenic in the soil,
Electrokinetic technique is affected to the repairing effect of As polluted soil.Soil is pre-processed therefore, it is necessary to seek a kind of method,
The amount for enhancing mobility As in soil, to enhance removal of the electrokinetic technique to arsenic in soil.Currently, common Enhancement Method
There is addition chemical reagent to be pre-processed, such as chelating agent and reducing agent.But the usual toxicity of chemical reagent is big, and is difficult to biological drop
Solution, easily brings secondary pollution.Patent document is consulted, it is related to the present invention to have: entitled " a kind of to be repaired using microorganism with electronic
Thiobacillus ferrooxidans are introduced into soil by the method that multiple junction closes arsenic in removal soil " (Publication No. CN104741367B), this method,
Arsenic in soil pollution control is carried out using electric repair method, microorganism remediation effect and electro reclamation effect combine, make in soil
It is difficult to individually be effectively removed using the arsenic of electric repair method removal.But the metabolism of microorganism is to soil environment
It is required that high, the change of caused soil pH easily causes microorganism dead in electrokinetic process, to reduce combination
Effect.Meanwhile in order to build the required control environment of thiobacillus ferrooxidans' existence, during the entire process of device operation, anode and cathode
It needs that HNO is added always in electrolytic cell3Solution increases the cost that As polluted soil is repaired with the method.
Summary of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
The method repaired the electric device of As polluted soil and repair As polluted soil can repair arsenic by humus combination electrical means
Contaminated soil achievees the effect that pre-process As polluted soil, improve removable in soil by adding humus into soil
Property arsenic amount, strengthen electrokinetic technique to the removal effect of arsenic in contaminated soil.The method of the present invention is easy to operate, and humus is certainly
Generally existing substance, at low cost, easily biological-degradable in right boundary.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of electric device for repairing As polluted soil, mainly by DC power supply, sample room, anode chamber, cathode chamber and stone
Electrode ink composition is filled As polluted soil to be processed in sample room, is corresponded in anode chamber and cathode chamber equipped with cathode and anode electricity
Liquid is solved, a pair of of graphite electrode plate is inserted directly into cathode chamber and anode chamber respectively, forms electrochemical appliance, sample room is set to sun
Between pole room and cathode chamber, between sample room and anode chamber and between sample room and cathode chamber, it is respectively provided with strainer, strainer
Filter cloth by porosity not less than 400 mesh is made.
It is preferred that being equipped with the blender of extensible immigration formula in sample room, the soil in sample room can be stirred.
As preferred technical solution of the invention, by sample room by the direction from cathode chamber to anode chamber according to sample room
Width be divided into 5 sampling regions, be the area S1, the area S2, the area S3, the area S4 and the area S5, form the As polluted soil after repairing
Arsenic removal rate gradient region, the soil mark after will be close to the reparation in the area S1 and the area S2 and the area S5 of close anode chamber of cathode chamber
It is set to completion and repairs As polluted soil；After soil after the reparation in the area S3 and the area S4 is collected, continue to repeat arsenic pollution soil
Earth reparation.
It is dirty to repair arsenic using humus combination electrical means for a kind of electric device for repairing As polluted soil using the present invention
The method for contaminating soil, includes the following steps:
A. by 500~1000g As polluted soil natural air drying to be processed, the arsenic pollution of As polluted soil to be processed is dense
Degree is 300-500mg/kg, removes grit and plant residue in As polluted soil, then grinds As polluted soil to be processed,
20 meshes are crossed, As polluted soil powder is made, are packed spare；
B. humus is ground, is sieved, obtains humus dusty material, store for future use；It is preferred that humus is pure without extracting
Turn to liquid；
C. As polluted soil pre-processes:
The As polluted soil obtained in step a filling is laid in the sample room for repairing the electric device of As polluted soil
In；Then the humus 1~10g of dusty material for taking step b to obtain, mixes with 200~300ml pure water, sample is added after shaking up
In room, the mixture of As polluted soil and humus is stirred, is sufficiently mixed humus with As polluted soil, it is quiet after mixing sufficiently
It sets at least 24 hours；Strainer is made by porosity not less than 400 mesh filter clothes, as uniformly penetrating film, reaches uniformly penetrating
Purpose, and the As polluted soil in sample room is prevented to be directly entered cathode chamber and anode chamber；
D. the electro reclamation of As polluted soil:
In step c after humus pretreatment As polluted soil, two graphite electrode plates are separately mounted to used in step c
Electric device cathode chamber and anode chamber in, add electrolyte into cathode chamber and anode chamber, then pass to direct current, voltage
Gradient is 1-5V/cm, remains powered at least 5 days, after energization, two graphite electrode plates is removed, in cathode chamber and anode chamber
Between repaired after soil.As preferred technical solution of the invention, electro reclamation is carried out to As polluted soil, in yin
Soil after the reparation obtained between pole room and anode chamber, it is equal according to the width of sample room by the direction from cathode chamber to anode chamber
It is divided into 5 sampling regions, is the area S1, the area S2, the area S3, the area S4 and the area S5, forms the arsenic removal rate of the As polluted soil after repairing
Gradient region, the soil after will be close to the reparation in the area S1 and the area S2 and the area S5 of close anode chamber of cathode chamber are demarcated as completing
Repair As polluted soil；After soil after the reparation in the area S3 and the area S4 is collected, continue to repeat As polluted soil to repair
It is multiple, the arsenic removal rate standard requirements until reaching As polluted soil.It is preferred that the electrolyte added into cathode chamber and anode chamber is adopted
Sodium chloride solution and mass percent concentration with pure water, deionized water, mass percent concentration not less than 1% are not higher than 8%
At least one of dilute nitric acid solution fluent material.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage:
1. the method for the present invention improves the content of transportable property arsenic in soil by the Effect of Pretreatment of humus, and passes through
Electrokinetic technique removes arsenic in soil, easy to operate, at low cost, without secondary pollution；
2. humus used in the method for the present invention is a kind of Eco-friendly material, handled without extraction purification, nothing
It need to be made to exist in liquid form by adjusting pH, it is easy to operate, more have practical value；
3. apparatus of the present invention structure is simple, easily controllable and use, occupied area is small, handles the efficiency of As polluted soil
It is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the electric device that the embodiment of the present invention one repairs As polluted soil.
Fig. 2 is the distribution schematic diagram of residual arsenic in the soil after one method of the embodiment of the present invention is repaired.
Specific embodiment
Above scheme is described further below in conjunction with specific implementation example, the preferred embodiment of the present invention is described in detail such as
Under:
Embodiment one
In the present embodiment, referring to Fig. 1, a kind of electric device for repairing As polluted soil, mainly by DC power supply, sample
Room 1, anode chamber 2, cathode chamber 3 and graphite electrode 5 form, and As polluted soil to be processed, anode chamber 2 are filled in sample room 1
Cathode and anode electrolyte is housed with corresponding in cathode chamber 3, a pair of of graphite electrode plate 5 is inserted directly into cathode chamber and anode chamber respectively,
Electrochemical appliance is formed, sample room 1 is set between anode chamber 2 and cathode chamber 3, between sample room 1 and anode chamber 2 and in sample
Between product room 1 and cathode chamber 3, it is respectively provided with strainer 4, strainer 4 is made by the filter cloth that porosity is 400 mesh.In electric field force
Under the action of, the arsenic in sample room 1 in contaminated soil to be processed is acted on by electromigration and electroosmotic flow to anode chamber 2 respectively
It is mobile with the direction of cathode chamber 3, so that arsenic be removed from contaminated soil.
In the present embodiment, referring to Fig. 1 and Fig. 2, sample room 1 is pressed from cathode chamber 3 to the direction of anode chamber 2 according to sample
The width of room 1 is divided into 5 sampling regions, is the area S1, the area S2, the area S3, the area S4 and the area S5, forms the As polluted soil after repairing
Arsenic removal rate gradient region, will be close to cathode chamber 3 the area S1 and the area S2 and close to anode chamber 2 the area S5 in reparation after soil
Earth is demarcated as completing to repair As polluted soil；After soil after the reparation in the area S3 and the area S4 is collected, continue to repeat arsenic dirt
Contaminate soil remediation.
In the present embodiment, referring to Fig. 1 and Fig. 2, a kind of electric device for being repaired As polluted soil using the present embodiment, is made
The method for repairing As polluted soil with humus combination electrical means, includes the following steps:
A. by 600g As polluted soil natural air drying to be processed, the arsenic pollution concentration of As polluted soil to be processed is
500mg/kg removes grit and plant residue in As polluted soil, then grinds As polluted soil to be processed, crosses 20 mesh
As polluted soil powder is made in sieve, packs spare；
B. humus is ground, is sieved, obtains humus dusty material, store for future use；Humus is without extraction purification
Liquid；
C. As polluted soil pre-processes:
The As polluted soil obtained in step a filling is laid in the sample room 1 for repairing the electric device of As polluted soil
In, strainer 4 is housed between sample room 1 and yin, pole pole room；Then the humus dusty material 1g for taking step b to obtain, with 300ml
Pure water mixing, is added in sample room 1 after shaking up, and stirs the mixture of As polluted soil and humus, makes humus and arsenic pollution
Soil is sufficiently mixed, and stands 24 hours after mixing sufficiently；Strainer is that 400 mesh filter clothes are made by porosity, is seeped as uniform
Permeable membrane achievees the purpose that uniformly penetrating, and the As polluted soil in sample room is prevented to be directly entered cathode chamber 3 and anode chamber 2；It is rotten
After growing matter pretreatment contaminated soil, increase the content of transportable arsenic in soil；
D. the electro reclamation of As polluted soil:
In step c after humus pretreatment As polluted soil, two graphite electrode plates 5 are separately mounted to step c institute
In the cathode chamber 3 and anode chamber 2 of electric device, pure water is added into cathode chamber 3 and anode chamber 2 as electrolyte, then
It is passed through direct current, voltage gradient 1V/cm is remained powered on 25 days, after energization, two graphite electrode plates 5 is removed, in cathode
Soil after being repaired between room 3 and anode chamber 2.Under the action of electric field force, in contaminated soil to be processed in sample room 1
Arsenic, acted on respectively by electromigration and electroosmotic flow it is mobile to anode chamber 2 and the direction of cathode chamber 3, thus by arsenic from Polluted Soil
It is removed in earth.
Soil when carrying out electro reclamation to As polluted soil, after the reparation obtained between cathode chamber 3 and anode chamber 2
Earth is divided into 5 sampling regions according to the width of sample room 1 by from cathode chamber 3 to the direction of anode chamber 2, be the area S1, the area S2,
The soil of each sampling area is placed in 105 DEG C of drying by the area S3, the area S4 and the area S5, and grinding, resolution measure remaining arsenic in soil
Content.Measure S1 removal rate of arsenic into S5 sampling area soil after reparation be respectively 37.78%, 35.40%, 17.24%,
7.17%, 23.15%, the average removal rate 24.1% of arsenic, illustrates that humus combination electrokinetic technique can effectively remove soil in soil
Arsenic in earth.Soil after the reparation obtained between cathode chamber 3 and anode chamber 2 is divided into 5 sampling regions, is formed and is repaired
The arsenic removal rate gradient region of As polluted soil afterwards will be close to the area S1 of cathode chamber 3 and the area S5 in the area S2 and close anode chamber 2
In reparation after soil be demarcated as complete repair As polluted soil；Soil after the reparation in the area S3 and the area S4 is collected
Afterwards, continue to repeat As polluted soil reparation, the arsenic removal rate standard requirements until reaching As polluted soil.5 are sampled
Distinguish sampling, the soil after being repaired.The present embodiment pre-processes As polluted soil by additional humus, improves
The amount of mobility arsenic in soil, and As polluted soil is effectively repaired in conjunction with electrical means, it improves electrical means and is repaired in soil
Operability and practicability in multiple application, and be expected in the actual repair for being used in other cationic heavy metals of soil.This reality
Apply a method have many advantages, such as it is easy to operate, it is safe and reliable.In addition humus used in the present embodiment is that a kind of ecology is friendly
Profile material, largely exists in the environment, at low cost, without secondary pollution to soil.
Embodiment two
The present embodiment is basically the same as the first embodiment, and is particular in that:
In the present embodiment, a kind of using the electric device for repairing As polluted soil, use humus combination electrical means
The method for repairing As polluted soil, includes the following steps:
A. by 1000g As polluted soil natural air drying to be processed, the arsenic pollution concentration of As polluted soil to be processed is
300mg/kg removes grit and plant residue in As polluted soil, then grinds As polluted soil to be processed, crosses 20 mesh
As polluted soil powder is made in sieve, packs spare；
B. this step is the same as example 1；
C. As polluted soil pre-processes:
The As polluted soil obtained in step a filling is laid in the sample room 1 for repairing the electric device of As polluted soil
In, strainer 4 is housed between sample room 1 and yin, pole pole room；Then the humus dusty material 10g for taking step b to obtain, with 200ml
Pure water mixing, is added in sample room 1 after shaking up, and stirs the mixture of As polluted soil and humus, makes humus and arsenic pollution
Soil is sufficiently mixed, and stands 24 hours after mixing sufficiently；Strainer is that 400 mesh filter clothes are made by porosity, is seeped as uniform
Permeable membrane, and the As polluted soil in sample room is prevented to be directly entered cathode chamber 3 and anode chamber 2；Humus pre-processes contaminated soil
Afterwards, increase the content of transportable arsenic in soil；
D. the electro reclamation of As polluted soil:
In step c after humus pretreatment As polluted soil, two graphite electrode plates 5 are separately mounted to step c institute
In the cathode chamber 3 and anode chamber 2 of electric device, pure water is added into cathode chamber 3 and anode chamber 2 as electrolyte, then
It is passed through direct current, voltage gradient 5V/cm is remained powered on 5 days, after energization, two graphite electrode plates 5 is removed, in cathode
Soil after being repaired between room 3 and anode chamber 2.Under the action of electric field force, in contaminated soil to be processed in sample room 1
Arsenic, acted on respectively by electromigration and electroosmotic flow it is mobile to anode chamber 2 and the direction of cathode chamber 3, thus by arsenic from Polluted Soil
It is removed in earth.
The method that the present embodiment humus combination electrokinetic technique repairs As polluted soil can apply to soil restoring technology neck
Domain.The present embodiment pre-processes As polluted soil by additional humus, improves the amount of mobility arsenic in soil, and ties
It closes electrical means and effectively repairs As polluted soil, improve operability and practical of the electrical means in soil remediation application
Property, and be expected in the actual repair for being used in other cationic heavy metals of soil.The present embodiment method has easy to operate, safety
The advantages that reliable.In addition humus used in the present embodiment is a kind of Eco-friendly material, is largely existed in the environment, at
This is low, without secondary pollution to soil.
Embodiment three
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the blender of extensible immigration formula is equipped in sample room 1, it can be to the soil in sample room 1
It is stirred.The mating blender of electric device for repairing As polluted soil, can preferably pre-process As polluted soil, make
After humus pre-processes contaminated soil, increase the content of transportable arsenic in soil.The present embodiment uses controllable blender, improves
Stirring efficiency saves manpower, and raising stirs evenly quality, by the Effect of Pretreatment of humus, improves transportable property in soil
The content of arsenic, and arsenic in soil is removed by electrokinetic technique, it is easy to operate, it is at low cost, it is without secondary pollution.
Example IV
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, when carrying out the electro reclamation of As polluted soil, quality is added into cathode chamber 3 and anode chamber 2
The dilute nitric acid solution that percent concentration is 8% then passes to direct current, carries out the electronic of As polluted soil and repair as electrolyte
It is multiple.Under the action of electric field force, the arsenic in contaminated soil to be processed in sample room 1 is made by electromigration and electroosmotic flow respectively
It is moved with to anode chamber 2 and the direction of cathode chamber 3, so that arsenic be removed from contaminated soil.Since the humus of use is one
Kind Eco-friendly material, is handled without extraction purification, easy to operate without having it in liquid form by adjusting pH,
More have practical value.
Combination attached drawing of the embodiment of the present invention is illustrated above, but the present invention is not limited to the above embodiments, it can be with
The purpose of innovation and creation according to the present invention makes a variety of variations, under the Spirit Essence and principle of all technical solutions according to the present invention
Change, modification, substitution, combination or the simplification made, should be equivalent substitute mode, as long as meeting goal of the invention of the invention,
The electric device of As polluted soil is repaired without departing from the present invention and repairs the technical principle and hair of the method for As polluted soil
Bright design, belongs to protection scope of the present invention.
Claims (8)
1. a kind of electric device for repairing As polluted soil, mainly by DC power supply, sample room (1), anode chamber (2), cathode chamber
(3) it is formed with graphite electrode (5), filling As polluted soil to be processed, anode chamber (2) and cathode chamber (3) in sample room (1)
Middle correspondence is equipped with cathode and anode electrolyte, and a pair of of graphite electrode plate (5) is inserted directly into cathode chamber and anode chamber respectively, composition electricity
Chemical devices, it is characterised in that: sample room (1) is set between anode chamber (2) and cathode chamber (3), in sample room (1) and anode
Between room (2) and between sample room (1) and cathode chamber (3), strainer (4) are respectively provided with, strainer (4) is not less than by porosity
The filter cloth of 400 mesh is made.
2. repairing the electric device of As polluted soil according to claim 1, it is characterised in that: be equipped in sample room (1)
The blender of extensible immigration formula can be stirred the soil in sample room (1).
3. repairing the electric device of As polluted soil according to claim 1, it is characterised in that: pressing sample room (1) from yin
The direction of pole room (3) to anode chamber (2) is divided into 5 sampling regions according to the width of sample room (1), is the area S1, the area S2, S3
Area, the area S4 and the area S5 form the arsenic removal rate gradient region of the As polluted soil after repairing, will be close to the area S1 of cathode chamber (3)
It is demarcated as completing to repair As polluted soil with the area S2 and the soil after the reparation in the area S5 of anode chamber (2)；By the area S3 and
After soil after the reparation in the area S4 is collected, continue to repeat As polluted soil reparation.
4. it is a kind of using the electric device for repairing As polluted soil described in claim 1, it is repaired using humus combination electrical means
The method of multiple As polluted soil, which comprises the steps of:
A. by 500~1000g As polluted soil natural air drying to be processed, the arsenic pollution concentration of As polluted soil to be processed is
300-500mg/kg removes grit and plant residue in As polluted soil, then grinds As polluted soil to be processed, crosses 20
As polluted soil powder is made in mesh, packs spare；
B. humus is ground, is sieved, obtains humus dusty material, store for future use；
C. As polluted soil pre-processes:
The As polluted soil obtained in the step a filling is laid in the sample room for repairing the electric device of As polluted soil
(1) in；Then the humus 1~10g of dusty material for taking the step b to obtain, mixes with 200~300ml pure water, adds after shaking up
Enter in sample room (1), stir the mixture of As polluted soil and humus, be sufficiently mixed humus with As polluted soil, mixes
At least 24 hours are stood after closing sufficiently；
D. the electro reclamation of As polluted soil:
In the step c after humus pretreatment As polluted soil, two graphite electrode plates (5) are separately mounted to the step
In the cathode chamber (3) and anode chamber (2) of electric device used in rapid c, electrolyte is added into cathode chamber (3) and anode chamber (2),
Direct current is then passed to, voltage gradient 1-5V/cm remains powered at least 5 days, after energization, removes two graphite electrodes
Plate (5), the soil after being repaired between cathode chamber (3) and anode chamber (2).
5. the method for repairing As polluted soil using humus combination electrical means according to claim 4, it is characterised in that:
In the step d, electro reclamation is carried out to As polluted soil, after the reparation obtained between cathode chamber (3) and anode chamber (2)
Soil be by from cathode chamber (3) to the direction of anode chamber (2) 5 sampling regions are divided into according to the width of sample room (1)
The area S1, the area S2, the area S3, the area S4 and the area S5 form the arsenic removal rate gradient region of the As polluted soil after repairing, will be close to cathode
The area S1 and the area S2 of room (3) and the soil after the reparation in the area S5 of anode chamber (2) are demarcated as completing to repair arsenic pollution soil
Earth；After soil after the reparation in the area S3 and the area S4 is collected, continue to repeat As polluted soil reparation, until reaching arsenic
The arsenic removal rate standard requirements of contaminated soil.
6. the method for repairing As polluted soil using humus combination electrical means according to claim 4, it is characterised in that:
In the step b, the humus is liquid without extraction purification.
7. the method for repairing As polluted soil using humus combination electrical means according to claim 4, it is characterised in that:
In the step c, the strainer is made by porosity not less than 400 mesh filter clothes, as uniformly penetrating film, and prevents sample
As polluted soil in product room is directly entered cathode chamber (3) and anode chamber (2).
8. the method for repairing As polluted soil using humus combination electrical means according to claim 4, it is characterised in that:
In the step d, the electrolyte added into cathode chamber (3) and anode chamber (2) uses pure water, deionized water, quality
At least one in the dilute nitric acid solution of sodium chloride solution of the percent concentration not less than 1% and mass percent concentration not higher than 8%
Kind fluent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028626.8A CN109317506A (en) | 2018-09-05 | 2018-09-05 | The method repaired the electric device of As polluted soil and repair As polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028626.8A CN109317506A (en) | 2018-09-05 | 2018-09-05 | The method repaired the electric device of As polluted soil and repair As polluted soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109317506A true CN109317506A (en) | 2019-02-12 |
Family
ID=65264645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811028626.8A Pending CN109317506A (en) | 2018-09-05 | 2018-09-05 | The method repaired the electric device of As polluted soil and repair As polluted soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109317506A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170474A (en) * | 2020-09-06 | 2021-01-05 | 桂林理工大学 | Method for repairing arsenic-polluted soil by electrically-driven reinforced permeable reactive barrier |
| CN112692051A (en) * | 2021-01-25 | 2021-04-23 | 明志科技大学 | Method and equipment for removing pollutants by using beneficial microorganism mixed bacterial liquid |
| CN114472495A (en) * | 2022-01-21 | 2022-05-13 | 西安建筑科技大学 | Device and method for electrokinetic remediation of polluted soil by combining chelating agent and permeable reactive barrier |
| CN115041517A (en) * | 2022-06-29 | 2022-09-13 | 桂林理工大学 | Method for electrically driving and strengthening removal of arsenic pollution in soil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203380185U (en) * | 2013-07-18 | 2014-01-08 | 江南大学 | Device for restoring polluted soil by using electrodynamic force |
| CN103624071A (en) * | 2013-12-16 | 2014-03-12 | 华北电力大学 | System and method for repairing arsenic-polluted soil by virtue of cooperation of strong oxidation of semi-solid-phase Fenton and electro-dynamic power |
| CN104690084A (en) * | 2013-12-05 | 2015-06-10 | 中国科学院沈阳应用生态研究所 | Electrochemical and microbial synergetic restoration integrated equipment for organic contaminated soil and restoration method thereof |
| CN106040737A (en) * | 2016-07-20 | 2016-10-26 | 河南工程学院 | Electrokinetic remediation experiment system for heavy metal in soil and experiment method of electrokinetic remediation experiment system |
| CN106111693A (en) * | 2016-08-12 | 2016-11-16 | 中国环境科学研究院 | A kind of method of in-situ immobilization arsenic slag contaminated soil of site |
| CN205966754U (en) * | 2016-08-12 | 2017-02-22 | 中国环境科学研究院 | Arsenic slag contaminated sites soil electronic PRB prosthetic devices |
| CN107030101A (en) * | 2017-03-28 | 2017-08-11 | 上海大学 | A kind of method of utilization microbial association EK PRB restoration of soil polluted by heavy metal |
-
2018
- 2018-09-05 CN CN201811028626.8A patent/CN109317506A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203380185U (en) * | 2013-07-18 | 2014-01-08 | 江南大学 | Device for restoring polluted soil by using electrodynamic force |
| CN104690084A (en) * | 2013-12-05 | 2015-06-10 | 中国科学院沈阳应用生态研究所 | Electrochemical and microbial synergetic restoration integrated equipment for organic contaminated soil and restoration method thereof |
| CN103624071A (en) * | 2013-12-16 | 2014-03-12 | 华北电力大学 | System and method for repairing arsenic-polluted soil by virtue of cooperation of strong oxidation of semi-solid-phase Fenton and electro-dynamic power |
| CN106040737A (en) * | 2016-07-20 | 2016-10-26 | 河南工程学院 | Electrokinetic remediation experiment system for heavy metal in soil and experiment method of electrokinetic remediation experiment system |
| CN106111693A (en) * | 2016-08-12 | 2016-11-16 | 中国环境科学研究院 | A kind of method of in-situ immobilization arsenic slag contaminated soil of site |
| CN205966754U (en) * | 2016-08-12 | 2017-02-22 | 中国环境科学研究院 | Arsenic slag contaminated sites soil electronic PRB prosthetic devices |
| CN107030101A (en) * | 2017-03-28 | 2017-08-11 | 上海大学 | A kind of method of utilization microbial association EK PRB restoration of soil polluted by heavy metal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170474A (en) * | 2020-09-06 | 2021-01-05 | 桂林理工大学 | Method for repairing arsenic-polluted soil by electrically-driven reinforced permeable reactive barrier |
| CN112692051A (en) * | 2021-01-25 | 2021-04-23 | 明志科技大学 | Method and equipment for removing pollutants by using beneficial microorganism mixed bacterial liquid |
| CN114472495A (en) * | 2022-01-21 | 2022-05-13 | 西安建筑科技大学 | Device and method for electrokinetic remediation of polluted soil by combining chelating agent and permeable reactive barrier |
| CN115041517A (en) * | 2022-06-29 | 2022-09-13 | 桂林理工大学 | Method for electrically driving and strengthening removal of arsenic pollution in soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109317506A (en) | The method repaired the electric device of As polluted soil and repair As polluted soil | |
| CN105057339B (en) | A kind of restorative procedure in situ for removing chromium in chromium slag contaminated soil of site | |
| CN203380185U (en) | Device for restoring polluted soil by using electrodynamic force | |
| Zhou et al. | Exchange electrode-electrokinetic remediation of Cr-contaminated soil using solar energy | |
| Zhou et al. | Electrokinetic remediation of a Cu–Zn contaminated red soil by controlling the voltage and conditioning catholyte pH | |
| Ryu et al. | Pulsed electrokinetic removal of Cd and Zn from fine-grained soil | |
| Shu et al. | Enhanced electrokinetic remediation of manganese and ammonia nitrogen from electrolytic manganese residue using pulsed electric field in different enhancement agents | |
| Alcántara et al. | Electrokinetic remediation of lead and phenanthrene polluted soils | |
| CN107413837B (en) | Device for repairing petroleum-heavy metal combined contaminated soil by combining electric and microorganism and application | |
| Kim et al. | Electrokinetic remediation of fluorine-contaminated soil: conditioning of anolyte | |
| CN106111693A (en) | A kind of method of in-situ immobilization arsenic slag contaminated soil of site | |
| CN107030101A (en) | A kind of method of utilization microbial association EK PRB restoration of soil polluted by heavy metal | |
| Cai et al. | In situ electrokinetic (EK) remediation of the total and plant available cadmium (Cd) in paddy agricultural soil using low voltage gradients at pilot and full scales | |
| Tang et al. | In situ electrokinetic isolation of cadmium from paddy soil through pore water drainage: Effects of voltage gradient and soil moisture | |
| CN205966754U (en) | Arsenic slag contaminated sites soil electronic PRB prosthetic devices | |
| CN103406347A (en) | Method for enriching heavy metals and organic matters in soil | |
| Cai et al. | Improvement in electrokinetic remediation of Pb-contaminated soil near lead acid battery factory | |
| CN106881345A (en) | The EK PRB combined remediation methods and its device of heavy metal Cr (VI) contaminated soil | |
| CN110076185A (en) | A kind of method of remediating heavy metal and polycyclic aromatic hydrocarbon composite pollution soil | |
| CN109926447A (en) | A variety of contaminated soil advanced oxidation collaboration electrodynamics in-situ remediation systems and method | |
| Zhou et al. | Pulse-enhanced electrokinetic remediation of fluorine-contaminated soil | |
| Yang et al. | Enhanced Electrokinetic Remediation of Heavy-Metals Contaminated Soil in presence tetrasodium N, N-bis (carboxymethyl) glutamic acid (GLDA) as chelator | |
| Xiao et al. | Electrokinetic remediation of uranium (VI)-contaminated red soil using composite electrolyte of citric acid and ferric chloride | |
| de Paiva et al. | Coupled electrochemical processes for removing dye from soil and water | |
| JP2022044528A (en) | Repair method of arsenic-contaminated soil due to electromotive strengthening penetrative reactive wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |