CN108723082A - A kind of load fixed combined contamination soil chemical oxidation restorative procedure - Google Patents
A kind of load fixed combined contamination soil chemical oxidation restorative procedure Download PDFInfo
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- CN108723082A CN108723082A CN201810648748.0A CN201810648748A CN108723082A CN 108723082 A CN108723082 A CN 108723082A CN 201810648748 A CN201810648748 A CN 201810648748A CN 108723082 A CN108723082 A CN 108723082A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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Abstract
The present invention relates to a kind of load fixed combined contamination soil chemical oxidation restorative procedures, include the following steps：（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；（2）Oxidating chemicals are added into the contaminated soil after screening, is uniformly mixed and repairs；The addition of the oxidating chemicals is the 0.1-5% of contaminated soil weight；The oxidating chemicals are load fixed oxidant；（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 3-7 days, stirs evenly, and the amount that stabilization agent is added is the 0.1-3% of heavy-metal contaminated soil weight after screening process；（4）The contaminated soil that stabilization agent is disposed plays heap detection；（5）Combined contamination soil backfill after the assay was approved is in planning back filled region.The present invention can simultaneously repairing organic and heavy metal composite pollution soil, repairing effect is good, and restorative procedure is simple.
Description
Technical field
The present invention relates to environmental technology fields, and in particular to a kind of load fixed combined contamination soil chemical oxidation reparation
Method.
Background technology
Contaminated soil remediation refers to making soil by physics, chemistry, biology, ecological principle, and use artificial regulatory measure
Earth pollutant dense (work) degree reduce, realize pollutant it is innoxious and stabilize, to reach it is intended that detoxifying effect technology
Measure.Currently, recovery technique possible in theory has phytoremediation, microorganism remediation, chemical remediation, peripheral doses and synthesis to repair
Several major class such as multiple.Some recovery techniques come into the field application stage and achieve preferable effect.Contaminated soil implementation is repaiied
It is multiple, to blocking pollutant to enter food chain, prevents from causing damages to health, promote land resource protection and sustainable development
It is of great significance.
The reparation of degrading organic pollutant and heavy-metal contaminated soil is focused primarily upon about the research and development of the technology at present
Two broad aspects.Individually the method for processing organic pollution or the method for independent processing heavy metal contaminants are more, but at present
Organic pollution effectively can be solved simultaneously and the method for heavy metal contaminants is less, and complex process, difficulty, which reaches, preferably to be controlled
Reason effect be easy to cause secondary pollution if reparation is bad.
Invention content
To solve the above problems, the present invention provide it is a kind of can simultaneously repairing organic and heavy metal composite pollution soil
Earth, repairing effect is good, and restorative procedure is simple.
Technical scheme of the present invention：
A kind of load fixed combined contamination soil chemical oxidation restorative procedure, includes the following steps：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, conserves 3-7 days, is examined in salvage shop
It surveys；
The addition of the oxidating chemicals is the 0.1-5% of contaminated soil weight；The oxidating chemicals are load fixed oxidation
Agent；
（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 3-7 days, stirs evenly, and is added and stabilizes
The amount of medicament is the 0.1-3% of heavy-metal contaminated soil weight after screening process；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth carry out after covering maintenance 3-5 days
Acceptance test is detected analysis, if polluted in soil according to the sampling frequency of one sample of every 500-600 cubic metres acquisition
Object content is less than desired value is repaired, then by checking and accepting, such as higher than desired value is repaired, then carries out step again（2）With（3）, until
Final acceptance(check)；
（5）Combined contamination soil backfill after the assay was approved is in planning back filled region.
Preferably, the preparation method of the load fixed oxidant is：Charcoal powder is uniformly mixed with ferrous sulfate powder,
It is mixed again with sodium peroxydisulfate pulvis, is eventually adding calcium oxide and is uniformly mixed, the charcoal powder：Ferrous sulfate powder：Sodium peroxydisulfate
Pulvis：The weight ratio of calcium oxide is 1:1.1-1.3:1.2-1.5：0.5-2.0.
Preferably, it is inorganic-organic composite material stabilization agent that the stabilization agent, which is stabilization agent, including
Flyash, bentonite, organic compost, cow dung and iron sand, the flyash：Bentonite：Organic compost：Cow dung：Iron sand：Clump branch bacterium
The weight ratio of root is 28：10：45：35：5：8.
Preferably, the charcoal powder is micron order, and the grain size of the charcoal powder is 50-800 microns.
Preferably, the screening pretreatment, the thick impurity of grain size >=50mm is removed, and the contaminated soil less than 50mm is sieve
Contaminated soil after point.
Preferably, heavy metal pollution earthen backfill blocks underground in planning back filled region using the means of barrier after the reparation
Water leaching causes the influence to groundwater environment, and Anti-seeping technology, isolation on-site underground are carried out to back filled region in process of construction
Water and extraneous hydraulic connection.
Preferably, the Anti-seeping technology is the surrounding setting sealant in backfill soil, and the sealant is from inside to outside
It is followed successively by rubble protective layer, the first fine sand protective layer, HDPE impervious barriers, the second fine sand protective layer and compacted cohesive soil layer, described time
The over top of earth of banketing is provided with greening soil layer, and the greening is implanted with turf with soil layer kind.
Preferably, salvage shop includes closed greenhouse, and exhaust passage, the exhaust passage are provided on the closed greenhouse
On be provided with air-introduced machine, the discharge duct connects bag filter, and the bag filter connects absorbent charcoal adsorption tank, described
It is provided with detection mouth outside absorbent charcoal adsorption tank.
Preferably, the heavy metal in the combined contamination soil be copper, lead, cadmium, arsenic, nickel, zinc, chromium, cobalt, vanadium, antimony, thallium,
One or more of manganese, arsenic, mercury and barium combine.
Preferably, the organic matter in the combined contamination soil includes benzene homologues, polycyclic aromatic hydrocarbon, petroleum hydrocarbon, cyanide, carbon
Hydrogen compound and gasoline contamination soil.
Beneficial effects of the present invention：
The restorative procedure of the present invention is simple, and medicament used is cheap to be easy to get, and can handle organic pollution and a huge sum of money simultaneously
Belong to pollution, repairing effect is stablized.Immobilization module is made in novel load material of the present invention, and can not only reach oxidation reparation has
The effect of machine contaminated soil, and the activity of sodium peroxydisulfate can be promoted to keep, oxidation is maximumlly played, organic matter is reduced
Pollution, reach optimum efficiency.The stabilization agent that the present invention uses is inorganic-organic composite material stabilization agent, a side
Face can further reduce organic matter, on the other hand can stabilize heavy metal, reach best repairing effect.The present invention exists
Anti-seeping technology carried out to back filled region in process of construction, it is further ensure heavy metal will not osmosis pollution soil, backfill soil
Over top rubble protective layer above be provided with greening soil layer, the greening is implanted with turf with soil layer kind, plays beautification
The effect of environment.The present invention handles contaminated soil in closed greenhouse, ensures when handling organic matter, organic matter volatile matter
It is tightly held by activated carbon tank absorption, the secondary pollution of environment will not be caused.
Description of the drawings
Fig. 1 is the structural schematic diagram of solidification and stabilization salvage shop of the present invention.
Fig. 2 is Anti-seeping technology structural schematic diagram of the present invention.
Fig. 3 is the structural schematic diagram of sealant of the present invention.
In attached drawing, 11- rubbles protective layer, the first fine sands of 12- protective layer, 13-HDPE impervious barriers, the protection of the second fine sands of 14-
Layer, 15- compacted cohesive soils layer, 2- greening soil layer, 3- backfills soil, the closed greenhouses of 4-, 5- exhaust passages, 6- air-introduced machines, 7- cloth
Bag dust collector, 8- absorbent charcoal adsorption tanks.
Specific implementation mode
Embodiment 1
The a certain commercial land in Guangdong is polluted, and it is copper, cadmium, lead, nickel, zinc to pay close attention to heavy metal contaminants, has been paid close attention to
Machine pollutant is that organic pollution is polycyclic aromatic hydrocarbon（Phenanthrene, benzo (a) anthracene, benzo (b) fluoranthene, benzo (a) pyrene, indeno (1,2,3-
Cd) pyrene, dibenzo (a, h) anthracene）, petroleum hydrocarbon（C6-C16,C17-C36）, dimethylbenzene, to by pollution commercial land items refer to
Mark is detected, and testing result is shown in Table 1.
The contaminated soil of detection is excavated, is sieved, quarter is then divided into, be transported to solidification and stabilization salvage shop into
Row stabilization processes；
First part of contaminated soil is using load fixed combined contamination soil chemical oxidation restorative procedure reparation, including following step
Suddenly：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；Screening pretreatment, by grain size >=
The thick impurity of 50mm removes, and the contaminated soil less than 50mm is the contaminated soil after screening；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, conserves 5 days, is detected in salvage shop；
As shown in Figure 1, the salvage shop includes closed greenhouse 4, exhaust passage 5 is provided on the closed greenhouse 4, the exhaust is logical
Air-introduced machine 6 is provided on road 5, the discharge duct 5 connects bag filter 7, and the bag filter 7 connects activated carbon adsorption
Tank 8, the absorbent charcoal adsorption tank 8 are provided with detection mouth outside；
The addition of the oxidating chemicals is the 4% of contaminated soil weight；The oxidating chemicals are load fixed oxidant；Institute
State load fixed oxidant preparation method be：Charcoal powder is uniformly mixed with ferrous sulfate powder, then with sodium peroxydisulfate pulvis
Mixing is eventually adding calcium oxide and is uniformly mixed, the charcoal powder：Ferrous sulfate powder：Sodium peroxydisulfate pulvis：The weight of calcium oxide
Than being 1:1.2:1.3：1.3；The grain size of the charcoal powder is 50-800 microns；
（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 5 days, stirs evenly, and is added and stablizes chemical drug
The amount of agent is 2% of heavy-metal contaminated soil weight after screening process；The stabilization agent be stabilization agent be it is inorganic-
Organic composite material stabilization agent, including flyash, bentonite, organic compost, cow dung and iron sand, the flyash：Swelling
Soil：Organic compost：Cow dung：Iron sand：The weight ratio of arbuscular mycorrhiza is 28：10：45：35：5：8；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth tested after covering maintenance 5 days
Detection is received, analysis is detected according to the sampling frequency of one sample of every 500-600 cubic metres acquisition；
（5）Combined contamination soil backfill after the assay was approved is in planning back filled region；After the reparation heavy metal pollution earthen backfill in
It plans back filled region, using the means of barrier, underground water leaching is blocked to cause the influence to groundwater environment, it is right in process of construction
Back filled region carries out Anti-seeping technology, isolation on-site underground water and extraneous hydraulic connection；As shown in Figures 2 and 3, at the antiseepage
For reason for sealant is arranged in the surrounding of backfill soil 3, the sealant is followed successively by rubble protective layer 11, the first fine sand from inside to outside
The over top of protective layer 12, HDPE impervious barriers 13, the second fine sand protective layer 14 and compacted cohesive soil layer 15, the backfill soil is set
It is equipped with greening soil layer 2,2 kinds of the greening soil layer is implanted with turf.Testing result is shown in Table 1.
1 pollution determination result of embodiment statistics and evaluation table in 1 soil of table
Embodiment 2
Second part of contaminated soil is using load fixed combined contamination soil chemical oxidation restorative procedure reparation, including following step
Suddenly：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；Screening pretreatment, by grain size >=
The thick impurity of 50mm removes, and the contaminated soil less than 50mm is the contaminated soil after screening；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, conserves 3 days, is detected in salvage shop；
As shown in Figure 1, the salvage shop includes closed greenhouse 4, exhaust passage 5 is provided on the closed greenhouse 4, the exhaust is logical
Air-introduced machine 6 is provided on road 5, the discharge duct 5 connects bag filter 7, and the bag filter 7 connects activated carbon adsorption
Tank 8, the absorbent charcoal adsorption tank 8 are provided with detection mouth outside；
The addition of the oxidating chemicals is the 0.1% of contaminated soil weight；The oxidating chemicals are load fixed oxidant；
It is described load fixed oxidant preparation method be：Charcoal powder is uniformly mixed with ferrous sulfate powder, then with persulfuric acid sodium powder
Agent mixes, and is eventually adding calcium oxide and is uniformly mixed, the charcoal powder：Ferrous sulfate powder：Sodium peroxydisulfate pulvis：The weight of calcium oxide
Amount is than being 1:1.1:1.2：0.5；The grain size of the charcoal powder is 50-800 microns；
（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 3 days, stirs evenly, and is added and stablizes chemical drug
The amount of agent is 0.1% of heavy-metal contaminated soil weight after screening process；The stabilization agent is that stabilization agent is nothing
Machine-organic composite material stabilization agent, including flyash, bentonite, organic compost, cow dung and iron sand, the flyash：It is swollen
Profit soil：Organic compost：Cow dung：Iron sand：The weight ratio of arbuscular mycorrhiza is 28：10：45：35：5：8；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth tested after covering maintenance 3 days
Detection is received, analysis is detected according to the sampling frequency of one sample of every 500-600 cubic metres acquisition；
（5）Combined contamination soil backfill after the assay was approved is in planning back filled region；After the reparation heavy metal pollution earthen backfill in
It plans back filled region, using the means of barrier, underground water leaching is blocked to cause the influence to groundwater environment, it is right in process of construction
Back filled region carries out Anti-seeping technology, isolation on-site underground water and extraneous hydraulic connection；As shown in Figures 2 and 3, at the antiseepage
For reason for sealant is arranged in the surrounding of backfill soil 3, the sealant is followed successively by rubble protective layer 11, the first fine sand from inside to outside
The over top of protective layer 12, HDPE impervious barriers 13, the second fine sand protective layer 14 and compacted cohesive soil layer 15, the backfill soil is set
It is equipped with greening soil layer 2,2 kinds of the greening soil layer is implanted with turf.Testing result is shown in Table 2.
2 pollution determination result of embodiment statistics and evaluation table in 2 soil of table
Embodiment 3
Third part contaminated soil is using load fixed combined contamination soil chemical oxidation restorative procedure reparation, including following step
Suddenly：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；Screening pretreatment, by grain size >=
The thick impurity of 50mm removes, and the contaminated soil less than 50mm is the contaminated soil after screening；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, conserves 7 days, is detected in salvage shop；
As shown in Figure 1, the salvage shop includes closed greenhouse 4, exhaust passage 5 is provided on the closed greenhouse 4, the exhaust is logical
Air-introduced machine 6 is provided on road 5, the discharge duct 5 connects bag filter 7, and the bag filter 7 connects activated carbon adsorption
Tank 8, the absorbent charcoal adsorption tank 8 are provided with detection mouth outside；
The addition of the oxidating chemicals is the 5% of contaminated soil weight；The oxidating chemicals are load fixed oxidant；Institute
State load fixed oxidant preparation method be：Charcoal powder is uniformly mixed with ferrous sulfate powder, then with sodium peroxydisulfate pulvis
Mixing is eventually adding calcium oxide and is uniformly mixed, the charcoal powder：Ferrous sulfate powder：Sodium peroxydisulfate pulvis：The weight of calcium oxide
Than being 1:1.3:1.5：2.0；The grain size of the charcoal powder is 50-800 microns；
（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 7 days, stirs evenly, and is added and stablizes chemical drug
The amount of agent is 3% of heavy-metal contaminated soil weight after screening process；The stabilization agent be stabilization agent be it is inorganic-
Organic composite material stabilization agent, including flyash, bentonite, organic compost, cow dung and iron sand, the flyash：Swelling
Soil：Organic compost：Cow dung：Iron sand：The weight ratio of arbuscular mycorrhiza is 28：10：45：35：5：8；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth tested after covering maintenance 5 days
Detection is received, analysis is detected according to the sampling frequency of one sample of every 500-600 cubic metres acquisition；
（5）Combined contamination soil backfill after the assay was approved is in planning back filled region；After the reparation heavy metal pollution earthen backfill in
It plans back filled region, using the means of barrier, underground water leaching is blocked to cause the influence to groundwater environment, it is right in process of construction
Back filled region carries out Anti-seeping technology, isolation on-site underground water and extraneous hydraulic connection；As shown in Figures 2 and 3, at the antiseepage
For reason for sealant is arranged in the surrounding of backfill soil 3, the sealant is followed successively by rubble protective layer 11, the first fine sand from inside to outside
The over top of protective layer 12, HDPE impervious barriers 13, the second fine sand protective layer 14 and compacted cohesive soil layer 15, the backfill soil is set
It is equipped with greening soil layer 2,2 kinds of the greening soil layer is implanted with turf.Testing result is shown in Table 3.
3 pollution determination result of embodiment statistics and evaluation table in 3 soil of table
Comparative example 1
4th part of contaminated soil is using load fixed combined contamination soil chemical oxidation restorative procedure reparation, including following step
Suddenly：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；Screening pretreatment, by grain size >=
The thick impurity of 50mm removes, and the contaminated soil less than 50mm is the contaminated soil after screening；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, conserves 5 days, is detected in salvage shop；
As shown in Figure 1, the salvage shop includes closed greenhouse 4, exhaust passage 5 is provided on the closed greenhouse 4, the exhaust is logical
Air-introduced machine 6 is provided on road 5, the discharge duct 5 connects bag filter 7, and the bag filter 7 connects activated carbon adsorption
Tank 8, the absorbent charcoal adsorption tank 8 are provided with detection mouth outside；
The addition of the oxidating chemicals is the 4% of contaminated soil weight；Oxidating chemicals are sodium peroxydisulfate pulvis：The weight of calcium oxide
Amount is than being 1：1 mixing；
（3）To by step（2）Stabilization agent is added in the contaminated soil for continuing maintenance 5 days, stirs evenly, and is added and stablizes chemical drug
The amount of agent is 2% of heavy-metal contaminated soil weight after screening process；The stabilization agent be stabilization agent be it is inorganic-
Organic composite material stabilization agent, including flyash, bentonite, organic compost, cow dung and iron sand, the flyash：Swelling
Soil：Organic compost：Cow dung：Iron sand：The weight ratio of arbuscular mycorrhiza is 28：10：45：35：5：8；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth tested after covering maintenance 5 days
Detection is received, is detected analysis according to the sampling frequency of one sample of every 500-600 cubic metres acquisition, testing result is shown in Table 4.
1 pollution determination result of comparative example statistics and evaluation table in 4 soil of table
The a certain commercial land in Guangdong is 32% by contaminated soil moisture content.
It can be seen that the present invention can meet the reparation of heavy metal contaminants and organic pollution simultaneously from table 1-3, from
As can be seen that the effect of the oxidating chemicals of the present invention to be significantly better than traditional calcium oxide and the oxidation of sodium peroxydisulfate is lived in table 4
Property, contaminated soil detected value, which can be seen that oxidating chemicals of the invention, after stabilization agent reparation is added can keep over cure
The activity of sour sodium, permanent oxidation organic pollution, and oxidating chemicals of the present invention and stabilization agent have synergistic effect, further
Renovation of organic pollution object.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of load fixed combined contamination soil chemical oxidation restorative procedure, which is characterized in that include the following steps：
（1）Screening pretreatment is carried out to contaminated soil, the contaminated soil after being sieved；
（2）Oxidating chemicals are added into the contaminated soil after screening, are uniformly mixed, 3-7 is conserved in salvage shop；
The addition of the oxidating chemicals is the 0.1-5% of contaminated soil weight；The oxidating chemicals are load fixed oxidation
Agent；
（3）To by step（2）Stabilization agent is added in the contaminated soil of maintenance 3-7 days, stirs evenly, and stabilization agent is added
Amount be screening process after heavy-metal contaminated soil weight 0.1-3%；
（4）The contaminated soil that stabilization agent is disposed beats heap, then using waterproof cloth carry out after covering maintenance 3-5 days
Acceptance test is detected analysis, if polluted in soil according to the sampling frequency of one sample of every 500-600 cubic metres acquisition
Object content is less than desired value is repaired, then by checking and accepting, such as higher than desired value is repaired, then carries out step again（2）With（3）, until
Final acceptance(check)；
（5）Combined contamination soil backfill after the assay was approved is in planning back filled region.
2. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the preparation method of the load fixed oxidant is：Charcoal powder is uniformly mixed with ferrous sulfate powder, then with sodium peroxydisulfate
Pulvis mixes, and is eventually adding calcium oxide and is uniformly mixed, the charcoal powder：Ferrous sulfate powder：Sodium peroxydisulfate pulvis：Calcium oxide
Weight ratio is 1:1.1-1.3:1.2-1.5：0.5-2.0.
3. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the stabilization agent is that stabilization agent is inorganic-organic composite material stabilization agent, including flyash, swelling
Soil, organic compost, cow dung and iron sand, the flyash：Bentonite：Organic compost：Cow dung：Iron sand：The weight ratio of arbuscular mycorrhiza
It is 28：10：45：35：5：8.
4. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the charcoal powder is micron order, and the grain size of the charcoal powder is 50-800 microns.
5. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the screening pretreatment removes the thick impurity of grain size >=50mm, and the contaminated soil less than 50mm is the Polluted Soil after screening
Earth.
6. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In heavy metal pollution earthen backfill is in planning back filled region after the reparation, using the means of barrier, underground water leaching is blocked to cause pair
The influence of groundwater environment carries out Anti-seeping technology, isolation on-site underground water and extraneous waterpower in process of construction to back filled region
Contact.
7. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 6, feature exist
In the Anti-seeping technology is the surrounding setting sealant in backfill soil, and the sealant is followed successively by rubble guarantor from inside to outside
Sheath, the first fine sand protective layer, HDPE impervious barriers, the second fine sand protective layer and compacted cohesive soil layer, the top of the backfill soil
Top is provided with greening soil layer, and the greening is implanted with turf with soil layer kind.
8. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In salvage shop includes closed greenhouse, and exhaust passage is provided on the closed greenhouse, air inducing is provided on the exhaust passage
Machine, the discharge duct connect bag filter, and the bag filter connects absorbent charcoal adsorption tank, the absorbent charcoal adsorption tank
It is provided with detection mouth outside.
9. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the heavy metal in the combined contamination soil is copper, lead, cadmium, arsenic, nickel, zinc, chromium, cobalt, vanadium, antimony, thallium, manganese, arsenic, mercury and barium
One or more of combination.
10. a kind of load fixed combined contamination soil chemical oxidation restorative procedure according to claim 1, feature exist
In the organic matter in the combined contamination soil includes benzene homologues, polycyclic aromatic hydrocarbon, petroleum hydrocarbon, cyanide, hydrocarbon and vapour
Soil contaminated by crude oil.
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| CN109609134A (en) * | 2018-11-07 | 2019-04-12 | 河北德龙环境工程股份有限公司 | A kind of stabilizing and curing agent and preparation method of As polluted soil and slag |
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| CN113617816A (en) * | 2020-05-08 | 2021-11-09 | 无锡蓝湾资源再生科技有限公司 | Soil remediation method |
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