CN106623397A - Electrodynamics-permeation reaction grid device suitable for outdoor field repair of composite polluted soil and technological process - Google Patents
Electrodynamics-permeation reaction grid device suitable for outdoor field repair of composite polluted soil and technological process Download PDFInfo
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- CN106623397A CN106623397A CN201610539787.8A CN201610539787A CN106623397A CN 106623397 A CN106623397 A CN 106623397A CN 201610539787 A CN201610539787 A CN 201610539787A CN 106623397 A CN106623397 A CN 106623397A
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- 239000002689 soil Substances 0.000 title claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 9
- 230000008439 repair process Effects 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000010439 graphite Substances 0.000 claims abstract description 18
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 18
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 12
- 239000010457 zeolite Substances 0.000 claims abstract description 12
- 229960000892 attapulgite Drugs 0.000 claims abstract description 5
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000460 chlorine Substances 0.000 claims abstract 2
- 229910052801 chlorine Inorganic materials 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 28
- 238000005067 remediation Methods 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 11
- 238000011109 contamination Methods 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 230000005520 electrodynamics Effects 0.000 claims description 5
- 239000003945 anionic surfactant Substances 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000011149 active material Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 2
- 235000005979 Citrus limon Nutrition 0.000 claims 1
- 244000131522 Citrus pyriformis Species 0.000 claims 1
- 239000001509 sodium citrate Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 15
- 239000003480 eluent Substances 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- XPFJYKARVSSRHE-UHFFFAOYSA-K trisodium;2-hydroxypropane-1,2,3-tricarboxylate;2-hydroxypropane-1,2,3-tricarboxylic acid Chemical compound [Na+].[Na+].[Na+].OC(=O)CC(O)(C(O)=O)CC(O)=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O XPFJYKARVSSRHE-UHFFFAOYSA-K 0.000 abstract description 3
- 239000012429 reaction media Substances 0.000 abstract 2
- 150000001450 anions Chemical class 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- FCBUKWWQSZQDDI-UHFFFAOYSA-N rhamnolipid Chemical compound CCCCCCCC(CC(O)=O)OC(=O)CC(CCCCCCC)OC1OC(C)C(O)C(O)C1OC1C(O)C(O)C(O)C(C)O1 FCBUKWWQSZQDDI-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- B09C2101/00—In situ
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an electrodynamics-permeation reaction grid (EK-PRB) device suitable for outdoor field soil repair and a process. The device mainly adopts a power supply system mainly using green and environment-friendly solar power supply and assisted by generator or commercial power supply; an electric power device can output direct-current voltage of 0-220 V according to experiment demands; and the electric power device and a PRB adopt an in-situ connecting mode. Cathodes and anodes adopt graphite electrodes. A PRB reaction medium mainly consists of zeolite with wide sources and low cost, activated carbons and modified attapulgite; and the PRB and the graphite electrodes form permeable reaction composite electrodes. The PRB reaction medium can be replaced at any time after failure. The cathodes and the anodes adopt a hexagonal placing mode to overcome the defects of short acting distance and nonuniform electric field distribution in traditional cathodes and anodes. The device enables application of an EK-PRB technology to outdoor scene polluted field repair to become possible. In addition, the process has no cathode and anode electrolysis chambers, but adopts green and environment-friendly citric acid-sodium citrate and biodegradable anion surface active agents as eluent to leach soil, so that both heavy metal and organic chlorine can be effectively removed.
Description
Technical field
The application is related to a kind of contaminated soil remediation device, and specifically, the application is related to a kind of multiple suitable for field condition
Electrodynamics-hydrodynamic seepage pressure (EK-PRB) device of conjunction.
Background technology
Contaminated soil remediation is at home and abroad increasingly taken seriously, abroad, some technologies come into engineering mimoir and
Application stage.Conventional soil restoring technology mainly has chemical leaching technology, electric repairing technique, PRB technologies etc..Due to soil
The differences such as composition, pollutant type, property are single to repair particularly in the case of the simultaneous combined pollution of different pollutants
Recovering technology is often difficult to reach reparation target, therefore, the combination application of different recovery techniques is increasingly taken seriously.
EK-PRB combined remediation technologies are a kind of new, environmental protection the soil restoring technologies for rising in recent years, main
If electric repairing technique is combined into common repairing polluted soil with permeability response wall technology.The technology combines two kinds
The advantage of recovery technique, by the higher heavy metal of toxicity and organic substance (such as Cr (VI), TCE, PCE etc.) electric power make its to
Electrode tip is moved, and makes polluter filling base material reaction with permeability response within the walls, is degraded into the relatively low low-valent metal of toxicity
Ion and organic matter, can not only restoration of soil polluted by heavy metal can be with repairing organic polluted soil, or even to hypotonicity
Contaminated soil has preferable repairing effect, and is affected relatively small by extraneous factor, it is to avoid add environment not friendly in soil
Good type material, what rehabilitation cost will be low than additive method is more.
EK-PRB combined remediation technologies are used as an emerging efficient based technique for in-situ remediation, although Principles are relatively simple
It is single, but need to consider the parameter of many reality in contaminated site repair process on the spot, operate extremely complex.Domestic EK-PRB is
The laboratory research stage is rested on, main to connect negative and positive the two poles of the earth by dc source, negative and positive electrolytic cell is continuous by cushioning liquid
PH value is adjusted, if configuring an electrolytic cell for each anode and cathode according to laboratory installation, for field repair, will be big
Amplitude increases the difficulty of practical operation, and increased processing cost.And due to laboratory installation negative and positive the two poles of the earth electrode between
Away from very short, about 20cm, be not suitable for onsite application in the wild.Further, since negative and positive pole tension operating distance is short, process time
Long, efficiency is low, pollutant single (mainly heavy metal Cd or Cr), and at present China's soil pollution is mainly with multi-metal or weight
The combined pollution of metal-organic pollution is more universal, so low, operable in the urgent need to researching and developing a set of remediation efficiency height, expense
Property be used for the device and technique of live combined contamination soil repairing and treating by force.
The content of the invention
The present invention includes the electric power that electrodynamics-hydrodynamic seepage pressure (EK-PRB) combination in situ is main function components
With PRB combined units and technological process.
In order to realize the purpose of the present invention, the technical scheme that the application is adopted is：
A kind of electrodynamics-hydrodynamic seepage pressure (EK-PRB) device repaired for field condition combined contamination soil,
It is characterized in that：Including electrical propulsion unit and PRB devices, described electrical propulsion unit includes electrode and voltage adjusting device, the electricity
Pole length is for 35-40cm and is set to be higher by 5～10cm of contaminated soil, and the electrode is arranged using regular polygon mode, described
PRB devices include being placed on PRB active reaction materials (3) of the surrounding them, by wire netting (4) that the PRB is active
The combination electrode that reaction material (3) is formed with the electrode crowds around fixation, and contaminated soil (5) to be repaired is filled in wire netting
(4) between, the electrode is arranged in contaminated soil (5) both sides to be repaired, and contaminated soil (5) lower section to be repaired is arranged
There is impervious barrier, the impervious barrier includes the plastic foil (9) of tiled arrangements, 5-7cm thickness zeolite (6), 5-7cm thickness cast-iron scraps successively
(7) and 2-5cm thickness activated carbon (8).
Further, the electrode include negative electrode (1), anode (2), the voltage adjusting device be commutator transformer (10), institute
State negative electrode (1) to arrange using regular hexagon mode, the anode (2) is arranged in regular hexagon center, the negative electrode (1) and/or
Spacing between the anode (2) is 30cm.
Further, the electrode include negative electrode (1), anode (2), the voltage adjusting device be commutator transformer (10), institute
State anode (2) to arrange using regular hexagon mode, the negative electrode (1) is arranged in regular hexagon center, the negative electrode (1) and/or
Spacing between the anode (2) is 30cm.
Further, electrodynamics devices are using based on solar powered, supplemented by generator or mains-supplied, by direct current
Transformer output interval is the DC voltage of 0～220V.
Further, electrodynamics devices adopt mains-supplied, are the straight of 0～220V by commutator transformer output interval
Stream voltage.
Further, the electrode be coated graphite rod electrrode, diameter 2-4cm, 1～2V/cm of voltage gradient.
Further, the combined contamination soil is heavy metal and organochlorine contamination contaminated soil, the PRB active reactions
Material (3) is zeolite, cast-iron scrap, attapulgite and activated carbon.
Further, various PRB active materials are placed around the graphite electrode of negative and positive the two poles of the earth, with graphite electrode shape is combined
Into permeable reaction combination electrode.
It is a kind of using the above-mentioned electrodynamics-hydrodynamic seepage pressure (EK- repaired for field condition combined contamination soil
PRB) device carries out the technological process of contaminated soil remediation, comprises the following steps：
Step one：PRB active reaction materials (3) is provided, and the PRB active reactions material (3) is filled in into nylon wire
In；
Step 2：In the wild the foundation ditch of appropriate size is excavated at scene, the thick zeolite (6) of tile successively plastic foil (9), 5-7cm,
5-7cm thickness cast-iron scrap (7) and 2-5cm thickness activated carbon (8)；
Step 3：Electrode is set, and coating wire netting around centered on electrode, each wire netting it is a diameter of
14cm, the nylon wire for being filled with PRB active reaction materials (3) is placed in gap of the electrode with wire netting；
Step 4：Pending contaminated soil is filled between wire netting, by leacheate pneumatic placing to contaminated soil
In, switching on power carries out soil remediation；
Step 5：After the completion of to be repaired, the soil after reparation is excavated to other positions, proceed soil next time and repair
It is multiple.
Further, in step 4, the leacheate is that 0.1M citric acid-sodium citrates and 0.5g/L are biodegradable
Anion surfactant rhamnolipid, moisture content keep 30% or so.
Compared with traditional EK-PRB devices, the device does not design anodic-cathodic room, but adopts the green ring of sprinkling
The eluent mode of guarantor, by the pollutant in soil under eluent effect, enters into solution, and it is fixed to occur under electrodynamic action
To migration.Reaction material wide material sources, it is cheap, can change at any time after material failure.Anode and cathode adopts hexagonal arrangement,
Overcome conventional anodic-cathodic operating distance short, the shortcoming of non-uniform electric.The device causes EK-PRB technologies to be applied to
Field condition contaminated site reparation is possibly realized.
Description of the drawings
Fig. 1 hydrodynamic seepage pressure combination electrode layout drawings；
Fig. 2 anodic-cathodic layout drawings.
1- anodes, 2- negative electrodes, 3-PRB active reaction materials, 4- wire nettings, 5- heavy metals and soil polluted by organic chloride, 6-
Zeolite, 7- cast-iron scraps, 8- activated carbons, 9- plastic foils, 10- dc source transformers
Specific embodiment
The present invention relates to electric power and PRB combined units associated with electrodynamics-hydrodynamic seepage pressure (EK-PRB) original position,
Including electrical propulsion unit and PRB devices, described electrical propulsion unit is made up of electrode and single phase ac regulation equipment, wherein, electricity
Pole material is chosen as graphite, and graphite electrode is set to be higher by contaminated soil depth H ' 5～10cm, and preferred a diameter of 2-4cm,
Highly it is 35-40cm.Negative and positive the two poles of the earth 1,2 can be arranged using regular hexagon mode, i.e. six negative electrodes are arranged in four with regular hexagon
Week, anode arrangement is disposed around at regular hexagon center, or six anodes with regular hexagon, and negative electrode is arranged in regular hexagon
The heart, each electrode spacing is 30cm.PRB active reactions material 3 is placed on around the graphite electrode rod of negative and positive the two poles of the earth, with graphite electrode shape
Into combination electrode, and the combination electrode that PRB active reactions material 3 and graphite electrode 1,2 are formed is crowded around into solid by wire netting 4
It is fixed.Contaminated soil 5 to be repaired is filled between wire netting 4.The anodic-cathodic is arranged in contaminated soil 5 to be repaired
Both sides, the lower section of contaminated soil 5 to be repaired is provided with impervious barrier, and the impervious barrier includes the plastic foil 9,5- of tiled arrangements successively
7cm thickness zeolite 6,5-7cm thickness cast-iron scraps 7 and 2-5cm thickness activated carbons 8, antiseepage layer height is consistent with contaminated soil depth.Impervious barrier
Can also have the plastic foil of antiseep or with the material that physical-chemical reaction can occur with heavy metal and organochlorine for other.
Contaminated soil 5 to be repaired is heavy metal and soil polluted by organic chloride.
For the reparation that pollutant is heavy metal and organochlorine combined pollution, combined pollution can be a various huge sum of moneys to the application
Category or various organochlorines or heavy metal and organochlorine, are sieved to the PRB materials for heavy metal and organochlorine combined pollution
Choosing, finally have selected zeolite, cast-iron scrap, attapulgite and activated carbon, and these four materials are mounted according to a certain percentage long 15cm* width
In 10cm Nylon Bags, wire netting is then put into, as PRB reaction materials, be determined through experimentation its optimum proportioning, zeolite and recessed
Convex rod soil heavy metal Cd all has good removal effect, and cast-iron scrap heavy metal Cr removal effect is substantially, and activated carbon is used
In the absorption of organochlorine, and it is mounted in the sack that nylon wire is made, is well mixed, is filled in wire netting 4, graphite electrode 1 or 2
The central point of cylinder wire netting 4 is placed on, the nylon wire equipped with four kinds of materials is filled in the surrounding of graphite electrode 4 as PRB reaction woods
Material 3, with graphite electrode 4 hydrodynamic seepage pressure combination electrode is constituted.
The electrical propulsion unit is using the electric power system based on solar powered, supplemented by generator or civil power.Dc source
The VD of transformer 10 is 0～220V, 1～2V/cm of voltage gradient.PRB packing materials by cast-iron scrap, activated carbon,
Zeolite and attapulgite modified filtrate are constituted.
The anode and cathode of the application adopts hexagonal arrangement, anode in the center of hexagon, then each of hexagon
Negative electrode (see Fig. 2) is put on summit, this ensure that each pair cathode and anode spacing is identical, at the scene using when, according to repair Ground
Product size, can simultaneously adopt multiple anodes, around put negative electrode according to hexagonal arrangement, and the layout type causes EK-PRB technologies
It is applied to field condition soil remediation to be possibly realized.Different from the negative and positive electrolytic cell used in laboratory installation, the application is
Leacheate is poured onto in soil by spray regime, pollutant occurs electromigration, electro-osmosis or electrophoresis under electromotive action and shows
As.
And the present invention adjusts soil pH and moisture content using direct spray regime, electrolytic cell assembly is saved, saving is processed
Cost, it is simple to operate.
Embodiment 1：
Certain contaminated site soil is taken from, is repaired with electric power and PRB United Technologies such as Fig. 1-2 devices, soil scene
Test head of district L is 2.5m, and wide D is 2m, and depth H is 0.5m, and treating capacity is 2.5m3.Tile impervious barrier below contaminated soil, will
Anodic-cathodic is put according to mode shown in Fig. 2, and anode is located at regular hexagon center, and negative electrode is located at each summit of regular hexagon,
Spacing d between anode and cathode is 30cm.Each graphite electrode is placed on a diameter of 14cm, the wire netting center of circle position of a height of 40cm
Put, hydrodynamic seepage pressure medium is filled between graphite electrode and wire netting, be highly consistent with depth of soil, by contaminated site
Soil is directly covered, and after compacting, applies direct current, and voltage gradient is 2v/cm.Can with 0.1M citric acid-sodium citrates and 0.5g/L
Biodegradable anion surfactant rhamnolipid washed off soil, moisture content keeps 30% or so, and total processing time is 15
My god.
Contaminated soil index change after the embodiment before processing of table 1
It is described above to be merely exemplary for the purpose of the present invention, and it is nonrestrictive, and those of ordinary skill in the art understand,
In the case of the spirit and scope limited without departing from claims appended below, many modifications, change or equivalent can be made,
But fall within protection scope of the present invention.
Claims (10)
1. it is a kind of for field condition combined contamination soil repair electrodynamics-hydrodynamic seepage pressure (EK-PRB) device, its
It is characterised by：Including electrical propulsion unit and PRB devices, described electrical propulsion unit includes electrode and voltage adjusting device, the electrode
Length is for 35-40cm and is set to be higher by 5～10cm of contaminated soil, and the electrode is arranged using regular polygon mode, the PRB
Device includes being placed on PRB active reaction materials (3) of the surrounding them, by wire netting (4) by the PRB active reactions
The combination electrode that material (3) is formed with the electrode crowds around fixation, contaminated soil (5) to be repaired be filled in wire netting (4) it
Between, the electrode is arranged in contaminated soil (5) both sides to be repaired, and contaminated soil (5) lower section to be repaired is provided with anti-
Infiltration layer, the impervious barrier include successively the plastic foil (9) of tiled arrangements, 5-7cm thickness zeolite (6), 5-7cm thickness cast-iron scrap (7) and
2-5cm thickness activated carbon (8).
2. device according to claim 1, it is characterised in that：The electrode includes negative electrode (1), anode (2), the pressure regulation
Equipment is commutator transformer (10), and the negative electrode (1) arranges that the anode (2) is arranged in positive six side using regular hexagon mode
Shape center, the spacing between the negative electrode (1) and/or the anode (2) is 30cm.
3. device according to claim 1, it is characterised in that：The electrode includes negative electrode (1), anode (2), the pressure regulation
Equipment is commutator transformer (10), and the anode (2) arranges that the negative electrode (1) is arranged in positive six side using regular hexagon mode
Shape center, the spacing between the negative electrode (1) and/or the anode (2) is 30cm.
4. the device according to one of claim 1-3, it is characterised in that：Electrodynamics devices adopt it is solar powered for
Supplemented by main, generator or mains-supplied, by the DC voltage that commutator transformer output interval is 0～220V.
5. the device according to one of claim 1-3, it is characterised in that：Electrodynamics devices adopt mains-supplied, pass through
Commutator transformer output interval is the DC voltage of 0～220V.
6. the device according to one of claim 1-3, it is characterised in that：The electrode be coated graphite rod electrrode, diameter 2-
4cm, 1～2V/cm of voltage gradient.
7. the device according to one of claim 1-3, it is characterised in that：The combined contamination soil is heavy metal and organic
Chlorine pollution contaminated soil, the PRB active reactions material (3) is zeolite, cast-iron scrap, attapulgite and activated carbon.
8. the device according to one of claim 1-3, it is characterised in that：Place around the graphite electrode of negative and positive the two poles of the earth many
PRB active materials are planted, combines to form permeable reaction combination electrode with graphite electrode.
9. electrodynamics-the infiltration repaired for field condition combined contamination soil described in a kind of employing claim 1-8
Reaction grid (EK-PRB) device carries out the technological process of contaminated soil remediation, it is characterised in that comprise the following steps：
Step one：PRB active reaction materials (3) is provided, and during the PRB active reactions material (3) is filled in into nylon wire；
Step 2：In the wild the foundation ditch of appropriate size is excavated at scene, the plastic foil (9) that tiles successively, 5-7cm thickness zeolite (6), 5-
7cm thickness cast-iron scrap (7) and 2-5cm thickness activated carbon (8)；
Step 3：Electrode is set, and is coating wire netting around centered on electrode, a diameter of 14cm of each wire netting,
The nylon wire for being filled with PRB active reaction materials (3) is placed in gap of the electrode with wire netting；
Step 4：Pending contaminated soil is filled between wire netting, by leacheate pneumatic placing to contaminated soil, is connect
Energization source carries out soil remediation；
Step 5：After the completion of to be repaired, the soil after reparation is excavated to other positions, proceed soil remediation next time.
10. technological process according to claim 9, it is characterised in that：In step 4, the leacheate is 0.1M lemons
Acid-sodium citrate and the biodegradable anion surfactant rhamnolipids of 0.5g/L, moisture content keeps 30% or so.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539787.8A CN106623397A (en) | 2016-07-11 | 2016-07-11 | Electrodynamics-permeation reaction grid device suitable for outdoor field repair of composite polluted soil and technological process |
| CN202310820100.8A CN116765112A (en) | 2016-07-11 | 2016-07-11 | Electrodynamic-osmotic reaction grid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539787.8A CN106623397A (en) | 2016-07-11 | 2016-07-11 | Electrodynamics-permeation reaction grid device suitable for outdoor field repair of composite polluted soil and technological process |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310820100.8A Division CN116765112A (en) | 2016-07-11 | 2016-07-11 | Electrodynamic-osmotic reaction grid device |
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| Publication Number | Publication Date |
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| CN106623397A true CN106623397A (en) | 2017-05-10 |
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|---|---|---|---|
| CN202310820100.8A Pending CN116765112A (en) | 2016-07-11 | 2016-07-11 | Electrodynamic-osmotic reaction grid device |
| CN201610539787.8A Pending CN106623397A (en) | 2016-07-11 | 2016-07-11 | Electrodynamics-permeation reaction grid device suitable for outdoor field repair of composite polluted soil and technological process |
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| CN202310820100.8A Pending CN116765112A (en) | 2016-07-11 | 2016-07-11 | Electrodynamic-osmotic reaction grid device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108066A (en) * | 2018-10-19 | 2019-01-01 | 中冶京诚工程技术有限公司 | Electric-chemical combined remediation system and method for organic matter contaminated soil |
| CN109821885A (en) * | 2019-03-06 | 2019-05-31 | 中新曜昂环境修复(江苏)有限公司 | The EK-PRB device of packaged type reparation combined contamination soil |
| CN109821884A (en) * | 2019-03-06 | 2019-05-31 | 中新曜昂环境修复(江苏)有限公司 | Convenient for the field erected EK-PRB device for repairing combined contamination soil |
| CN114367533A (en) * | 2022-01-18 | 2022-04-19 | 陕西省土地工程建设集团有限责任公司 | Soil remediation system and method |
| CN115318821A (en) * | 2022-08-10 | 2022-11-11 | 东南大学 | Microbial electrochemical device and method for removing composite heavy metals in soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109108066A (en) * | 2018-10-19 | 2019-01-01 | 中冶京诚工程技术有限公司 | Electric-chemical combined remediation system and method for organic matter contaminated soil |
| CN109108066B (en) * | 2018-10-19 | 2023-12-08 | 中冶京诚工程技术有限公司 | Electric-chemical combined restoration system and method for organic matter polluted soil |
| CN109821885A (en) * | 2019-03-06 | 2019-05-31 | 中新曜昂环境修复(江苏)有限公司 | The EK-PRB device of packaged type reparation combined contamination soil |
| CN109821884A (en) * | 2019-03-06 | 2019-05-31 | 中新曜昂环境修复(江苏)有限公司 | Convenient for the field erected EK-PRB device for repairing combined contamination soil |
| CN114367533A (en) * | 2022-01-18 | 2022-04-19 | 陕西省土地工程建设集团有限责任公司 | Soil remediation system and method |
| CN115318821A (en) * | 2022-08-10 | 2022-11-11 | 东南大学 | Microbial electrochemical device and method for removing composite heavy metals in soil |
| CN115318821B (en) * | 2022-08-10 | 2023-08-18 | 东南大学 | Microbial electrochemical device and method for removing composite heavy metals in soil |
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| CN116765112A (en) | 2023-09-19 |
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