CN108607874A - A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution - Google Patents
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution Download PDFInfo
- Publication number
- CN108607874A CN108607874A CN201810852844.7A CN201810852844A CN108607874A CN 108607874 A CN108607874 A CN 108607874A CN 201810852844 A CN201810852844 A CN 201810852844A CN 108607874 A CN108607874 A CN 108607874A
- Authority
- CN
- China
- Prior art keywords
- soil
- heavy metal
- industry
- restorative procedure
- metal pollution
- 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
-
- 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
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution, it is related to technical field of soil remediation, remove sundries, weeds, the rubbish in region etc. repaired, smooth processing, 25 ° of gradient or less, contaminated soil is dug out, cutting depth is 40~60cm, is laid with one layer of HDPE antiseepage film in bottom of foundation ditch, stabilizer is added in temporary contaminated soil and is mixed, mixed soil backfills in antiseepage film, and backfill upper layer spraying a layer thickness is the nutrient matrix layer of 4~7cm；The stabilizer is 2 10% oyster shell whitings, 3 12% calcium magnesium phosphate, 1 9% carboxymethyl chitosan, and each composition of nutrient matrix layer is by volume：Clay 10 24%, perlite 10 18%, plant fiber 9 24%, montmorillonite 8 15%, controlled-release compound fertilizer 1 5%, organic matter 20 40%, granule agent 0.35 0.38%, seed 0.5 3%.Seed is one or more of white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza.The present invention uses " immobilization-is plants enriched " combined remediation technology, the advantageous effect with heavy metal in fixing soil.
Description
Technical field
The present invention provides a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution, and target heavy metal contaminants are
Lead, zinc, cadmium are related to soil pollution recovery technique field.
Background technology
With the continuous development of global economy, the heavy metal pollution in soil has become the master that global environment quality faces
Problem is wanted, the sources of heavy metal in soil is extensive, is mostly derived from the various wastes of human production activity's discharge, and such as mining is smelted
And Waste ammunition processing etc., also agriculture chemical fertilizer (unreasonable use) and pesticide, radioactive substance etc..Heavy metal pollution
With concealment, chronicity and irreversibility, it cannot be eventually led to soil degradation by animals and plants or microorganism decomposition, made produce
Amount reduces, and is accumulated gradually in human body into human body by drinking water or food chain etc., causes in the chronic heavy metal of human body
Poison leads to kidney, liver, lung, bone, reproductive organs, immune system, cardiovascular system injury, is caused to the health of human body
Greatly harm.
The reparation of heavy-metal contaminated soil is primarily referred to as being removed or being reduced heavy metal in soil using various science and technology
Bio-available Zn concentration or activity, target are to restore the ecosystem function of soil itself, to reduce in soil media heavy metal to
Underground water and from food chain to animals and plants migrate.According to the statistics that U.S.'s super fund site remediation technology is applied, contaminated site
Curing/stabilizing technology, bioremediation technology, heat treatment technics, chemical treatment method, electric repairing technique are current soil
Most common technology in recovery project.
Stabilisation refers to the validity from pollutant, by Forms Transformation, converts pollutant to and not readily dissolves, moves
Shifting ability or the smaller form of toxicity are innoxious to realize, to reduce its harm risk to the ecosystem.Currently used for soil
The stabilizer that heavy metal stabilization is administered is broadly divided into clay mineral, such as：Vermiculite, diatomite, montmorillonite and zeolite etc.；Inorganic material
Material, such as：Phosphate, ferrous sulfate, flyash etc.；Organic materials, such as fowl and animal excrement, organic compost, activated sludge and humic
Acid etc..Phytoremediation technology refers to reduces the environment of heavy metal-polluted soil concentration or toxicity using plant to the enrichment of heavy metal
Friendly method, principle be using certain plants for having super enrichment ability to heavy metal, the heavy metal element in soil is big
It is transferred in plant body to amount, to achieve the purpose that rehabilitating soil.Biological restoration is mainly repaiied including phytoremediation, microorganism
Multiple and animal reparation, phytoremediation are repaired to contaminated soil using plant and its rhizosphere microbial, are planted by super accumulation
Object shifts the absorption of heavy metal in soil, and phytoremediation can be divided into three plant extract, phytovolatilization, plant stability classes
Not, the mechanism of microorganism remediation is mainly the micropopulation using natural or artificial culture, promotion or the metabolism of enhancement microbiological
Effect reduces the active technology of toxic pollutant in soil to reach；Hot repairing method is to make some tools by way of heating
There is the heavy metal of volatilization property to be parsed from soil, is recycled and focused on；The chemical restoration of heavy metal utilizes
More is soil washing, and mainly by the way that leacheate is added, change pollutant, will a huge sum of money in the absorption behavior of soil surface
Category is transferred to from solid phase in liquid phase, and the key problem in technology of the technology is the selection of leacheate；Electric repairing technique refers to making in electric field
Under, orientation transfer occurs for metal ion, can be collected processing to heavy metal at electrode both ends in this way.
But under the conditions of prior art, these technologies have shortcoming.After heavy metals immobilization technology has curing reaction
Soil volume has the problem of different degrees of increase.There are stabilizers and soil mixing to be not thorough for heavy metal stabilization technology, repaiies
Multiple quantities is big and does not have the shortcomings that effect steady in a long-term, and the heavy metal-polluted soil after stablizing is over time or native
When earth pH value varies widely (such as acid rain and apply acidic fertilizier), understands some and released again；Phytoremediation is more
The research of Farmland Soil Pollution improvement is rested on, the conditions areas in hardship such as side slope, Tailings Dam can not be applied to, and often repair week
Phase is long, and repairing effect is slow；Phytoremediation technology is in barren environment since moisture, nutrient etc. support deficiency so that plant gives birth to
Object amount is small, and growth is slower, and microorganism remediation is limited in that it is general only preferable to the heavy metal repairing effect of orientation, and by
Small in microorganism organism, the heavy metal amount of reparation is also few；Heat treatment technics can destroy the property and its cultivation ability of soil, and
Gas causes secondary pollution in order to prevent, more demanding to technology；Elution technique is of high cost, be easy to cause secondary pollution, influences
Groundwater quality；Electric repairing technique is only applicable to the improvement of smaller contaminated site, is easy the shadow of contaminated object dissolving and desorption
It rings, and is unsuitable for acid washing conditions, due to the complexity of soil environment, often will appear the situation opposite with expected results.
Application No. is 200910194051.1 Chinese invention patents to disclose a kind of improvement side of heavy-metal contaminated soil
Method is aoxidized by the response inhabitations matrix such as absorption, chelating, complexing, and fixed heavy metal ion simultaneously reduces its biology toxicity；Subtract
Few diffusion and leakage of the heavy metal ion to surrounding soil or water body.Application No. is 201210107906.4 Chinese invention patents
Application discloses a heavy metal species normal temperature cure agent, and main component is magnesia and potassium dihydrogen phosphate；Application No. is
201210383318.3 Chinese invention patent disclose one kind with sulphate aluminium cement reparation curing agent as main component；But
Repairing later stage discovery using the renovation agent can cause soil hardened phenomenon occur.Application No. is 201610708833.2 middle promulgateds by the State Council
Bright patent discloses a kind of using the method for making restoration of soil polluted by heavy metal between herbaceous plant, and weight is planted in using herbaceous plant
In the soil of metallic pollution, the heavy metal for repairing area is reduced to the absorption of heavy metals in soil using heavy metal adsorption plant
Pollution concentration.
For the low place of pollution level, stabilization technology or phytoremediation technology can be individually taken to be administered.
But when as individually used stabilization technology, excessive stabilizer is added, prodigious shadow can be caused to the physicochemical property of soil
It rings, is difficult to survive so as to cause edaphon and plant；Stabilizing agent dosage is insufficient can not to make have biology living in soil again
Property form heavy metal all stablize, it is difficult to the regulation effect obtained.When individually using phytoremediation technology, need to grow very much
Time can embody the effect to contaminated soil remediation, during this period a large amount of heavy metal can with the wind, rainfall, soil erosion
Etc. factors influence move to other uncontaminated regions.
Invention content
The present invention provides a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution, and target heavy metal contaminants are
Lead, zinc, cadmium, using " stabilize-plants enriched " combined remediation technology, first the heavy metal in soil is stablized, then pass through plant
Enrichment extraction soil in heavy metal ion, be finally reached the purpose of rehabilitating soil, solve heavy metal in the prior art
After fixation, it may appear that part discharges；The technical problem of simple phytoremediation period length.
The invention is realized in this way：Region to be repaired is arranged, it is convex for ground by removings such as sundries, weeds, rubbish
It plays position and carries out smooth processing, ensure 25 ° of the gradient hereinafter, excavating contaminated soil, it is anti-to be laid with one layer of HDPE in bottom of foundation ditch
Film is oozed, the soil excavated backfills after evenly mixing with stabilizer includes in antiseepage film, sowing grass seeds by duster one layer in backfill soil top
The nutrient matrix layer of seed.
Embodiment as one preferred, the stabilizer include following components and its with dry ground weight proportion, shell
Powder 2-10%, calcium magnesium phosphate 3-12%, carboxymethyl chitosan 1-9%.
Embodiment as one preferred, the stabilizer include following components and its with dry ground weight distribution ratio, shellfish
Shell powder 10%, calcium magnesium phosphate 12%, carboxymethyl chitosan 9%.
Embodiment as one preferred, the nutrient matrix layer include following components and volume ratio：Clay 10-
24%, perlite 10-18%, plant fiber 9-24%, montmorillonite 8-15%, controlled-release compound fertilizer 1-5%, organic matter 20-40%,
Granule agent 0.35-0.38%, seed 0.5-3%.
Nutrient matrix layer provides the moisture content and nutriment of its needs in seed germination, ensures seed initial stage energy
Normal growth and development；Nutriment needed for plant is provided by hypothallus, is not necessarily to artificial top dressing.
Perlite and montmorillonite play the role of water conservation and increase soil porosity.
Embodiment as one preferred, the granule agent are polyacrylate.
The granule agent effectively forms crumb structure, helps the hypothallus for forming stable retain water and nutrients.
The seed of embodiment as one preferred, the nutrient matrix layer is white thorn, sacsaoul, hedysarum scoparium, caragana microphylla golden pheasant
One or more of youngster, alfalfa, shrub lespedeza.
Embodiment as one preferred, area to be repaired soil excavating depth are 15~20cm.
The thickness of sowing grass seeds by duster of embodiment as one preferred, the nutrient matrix layer is 4~7cm.
The operation principle of the present invention：Smooth processing is carried out for ground boss, contaminated soil is excavated, is added
Enter stabilizer, a part of heavy metal in contaminated soil is made to be transformed into non-live condition, lay one layer of special preparation again later includes
The nutrient matrix layer of seed utilizes plants enriched effect extracting heavy metal ions.
Beneficial effects of the present invention：
1. " immobilization-is plants enriched " combined remediation technology can first fix the heavy metal in soil, then pass through plant
Enrichment extraction soil in heavy metal ion, be finally reached the purpose of rehabilitating soil.Two kinds of technologies play complementary work
With, and their advantages respectively can be given full play to.
Carried out on stable contaminated soil 2. nutrient matrix layer provided by the invention is laid in, make plant early growth period not
It is in direct contact with heavy metal ion, and matrix nutrition is abundant, can promote the quick healthy growth of plant.
3, the HDPE antiseepage films being laid with can be cut off dirty caused by pollutant in soil migrates downward vertically with surface water
It contaminates, the heavy metal in limitation soil, which migrates downward into, to be polluted.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with specific embodiments of the present invention, is shown
So, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, includes the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss,
Ensureing 25 ° of the gradient hereinafter, excavating contaminated soil, excavating depth 40cm is laid with one layer of HDPE antiseepage film in bottom of foundation ditch,
The soil excavated backfills after evenly mixing with stabilizer, sows grass seeds by duster one layer of nutrient matrix for including seed in backfill soil top
The thickness of layer, nutrient matrix layer is 6cm.
The stabilizer includes following components and its weight distribution ratio with dry ground：Oyster shell whiting 10%, calcium magnesium phosphate 12%,
Carboxymethyl chitosan 9%.Dry ground is the heavy metal soil dry ground excavated.
The nutrient matrix layer includes following components and volume ratio：Clay 23.24%, perlite 15%, plant fiber
24%, montmorillonite 10.9%, controlled-release compound fertilizer 4%, organic matter 20%, granule agent 0.36%, seed 2.5%.The granule agent
For polyacrylate.The seed select one kind in white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza or
It is several.
Embodiment 2
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, includes the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss,
Ensure the gradient at 25 ° hereinafter, excavating contaminated soil, excavating depth 35cm is laid with one layer of HDPE antiseepage in bottom of foundation ditch
Film, the soil excavated backfill after evenly mixing with stabilizer, sow grass seeds by duster one layer of Nutrient medium for including seed in backfill soil top
The thickness of matter layer, nutrient matrix layer is 7cm.
The stabilizer includes following components and its weight distribution ratio with dry ground：Oyster shell whiting 2%, calcium magnesium phosphate 3%, carboxylic
Methyl chitosan 1%, dry ground are the heavy metal soil dry ground excavated.
The nutrient matrix layer includes following components and volume ratio：Clay 10%, perlite 18%, plant fiber 10%,
Montmorillonite 13.62%, controlled-release compound fertilizer 5%, organic matter 40%, granule agent 0.38%, seed 3%.The granule agent is poly- third
Olefin(e) acid ester.The seed selects one or more of white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza.
Embodiment 3
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, includes the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss,
Ensureing 25 ° of the gradient hereinafter, excavating contaminated soil, excavating depth 38cm is laid with one layer of HDPE antiseepage film in bottom of foundation ditch,
The soil excavated backfills after evenly mixing with stabilizer, sows grass seeds by duster one layer of nutrient matrix for including seed in backfill soil top
The thickness of layer, nutrient matrix layer is 4cm.
The stabilizer includes following components and its weight distribution ratio with dry ground：Oyster shell whiting 6%, calcium magnesium phosphate 7%, carboxylic
Methyl chitosan 5%, dry ground are the heavy metal soil dry ground excavated.
The nutrient matrix layer includes following components and volume ratio：Clay 24%, perlite 17%, plant fiber
17.15%, montmorillonite 15%, controlled-release compound fertilizer 3%, organic matter 23%, granule agent 0.35%, seed 0.5%.The granule agent
For polyacrylate.The seed select one kind in white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza or
It is several.
Embodiment 4
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, includes the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss,
Ensureing 25 ° of the gradient hereinafter, excavating contaminated soil, excavating depth 36cm is laid with one layer of HDPE antiseepage film in bottom of foundation ditch,
The soil excavated backfills after evenly mixing with stabilizer, sows grass seeds by duster one layer of nutrient matrix for including seed in backfill soil top
The thickness of layer, nutrient matrix layer is 5cm.
The stabilizer includes following components and its weight distribution ratio with dry ground：Oyster shell whiting 2%, calcium magnesium phosphate 7%, carboxylic
Methyl chitosan 5%, dry ground are the heavy metal soil dry ground excavated.
The nutrient matrix layer includes following components and volume ratio：Clay 23.63%, perlite 16%, plant fiber
9%, montmorillonite 15%, controlled-release compound fertilizer 2%, organic matter 31%, granule agent 0.37%, seed 3%.The granule agent is poly- third
Olefin(e) acid ester.The seed selects one or more of white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza.
Embodiment 5
A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, includes the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss,
Ensureing 25 ° of the gradient hereinafter, excavating contaminated soil, excavating depth 57cm is laid with one layer of HDPE antiseepage film in bottom of foundation ditch,
The soil excavated backfills after evenly mixing with stabilizer, sows grass seeds by duster one layer of nutrient matrix for including seed in backfill soil top
The thickness of layer, nutrient matrix layer is 5cm.
The stabilizer includes following components and its weight distribution ratio with dry ground：Oyster shell whiting 6%, calcium magnesium phosphate 7%, carboxylic
Methyl chitosan 1%, dry ground are the heavy metal soil dry ground excavated.
The nutrient matrix layer includes following components and volume ratio：Clay 21%, perlite 10%, plant fiber
16.62%, montmorillonite 8%, controlled-release compound fertilizer 1%, organic matter 40%, granule agent 0.38%, seed 3%.The granule agent is
Polyacrylate.The seed selects one kind or several in white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza
Kind.
Stabilizer curing heavy metal is tested.
Huge sum of money contaminated soil is chosen, as stabilizer component test experiments object, selected Content of Pb in Soil is
Soil is divided into 16 parts by 250mg/L, Zn content 450mg/L, cadmium content 150mg/L, and a copy of it is not added with any steady
Determine agent as a comparison, remaining 15 parts are divided into 5 experimental groups, 3 parts of soil of each experimental group, and each experimental group is separately added into not same amount
Oyster shell whiting, calcium magnesium phosphate, carboxymethyl chitosan, stabilizer component addition is weight ratio (%) with soil dry ground.Stablize
Agent curing components effect is referring to table 1.
1 different component heavy metals immobilization effect of table
As seen from Table 1, oyster shell whiting accounts for dry ground weight 10%, and calcium magnesium phosphate accounts for dry ground weight 12%, carboxymethyl chitosan
When accounting for dry ground weight 9%, heavy metals immobilization effect is best.
Reparative experiment
2017, certain heavy metal pollution place is chosen, is repaired.Content of beary metal in collected soil is measured
After find, lead content ranging from 246.92~361.9mg/kg in restoring area soil, the average value of lead content is 289.45mg/
Kg, minimum is 1.54 times of agricultural land standard (160mg/kg) in farming land standard of soil environment quality, and peak
It is then 2.26 times of agricultural land standard；Chromium content range is 142.56~165.3mg/kg in soil, and the average value of chromium content is
154.10mg/kg, content belong within the scope of the Soil standard of agricultural land；Zinc content in soil ranging from 405.37~
639.89mg/kg, Zn content average value are 503.7mg/kg, and minimum is the agricultural in farming land standard of soil environment quality
1.62 times of standard for land use (250mg/kg), and peak is then 2.56 times of agricultural land standard.As shown in table 2.
The heavy metal pollution of soil situation in repair of table 2
The heavy soils such as four parts are taken, number is YBG-1, YBG-2, YBG-3, YBG-4 respectively, surveys lead, chromium, zinc in each soil
Content, then remove average value, chromium average content is 289.45mg/kg, and chromium average content is 154.10mg/kg, and zinc averagely contains
Amount is 503.70mg/kg.
Above-mentioned contaminated site is divided into 5 experimental groups, each experimental group site area is consistent, is individually transported per experimental group
With the restorative procedure described in embodiment 1-5, reparation in 8 months by a definite date is carried out, the heavy metal surveyed later per experimental group soil is average
Content, measurement method are that each experimental group takes the heavy soils such as four parts, survey Pb, Cd, Zn content, are averaged, average content is shown in Table
3。
Heavy metal-polluted soil average content after the reparation of table 3
As seen from Table 3, with restorative procedure described in embodiment 1, in soil, the content of four kinds of target heavy metals has been
It reduces.The average content of lead is 138.50mg/kg in soil, and lead content averagely reduces 52.15%.Cadmium average content in soil
For for 56.63mg/kg, content averagely reduces 63.25%.The average content of ZINC IN SOIL is 212.76mg/kg, and Zn content is flat
Reduce 57.76%.It can be seen that this method plays relatively good effect for the reparation of heavy metal in soil.
Restorative procedure described in embodiment 2, the average content of lead is 177.29mg/kg in soil, and lead content averagely reduces
38.75%.Cadmium average content is 88.22mg/kg in soil, and content averagely reduces 42.75%.Being averaged for ZINC IN SOIL contains
Amount is 238.85mg/kg, and Zn content averagely reduces 52.58%.
With restorative procedure described in embodiment 3, the average content of lead is 166.38mg/kg in soil, and lead content averagely drops
Low 42.52%.Cadmium average content is 79.59mg/kg in soil, and content averagely reduces 48.35%.ZINC IN SOIL is put down
Equal content is 255.63mg/kg, and Zn content averagely reduces 49.25%.
With restorative procedure described in embodiment 4, the average content of lead is 197.84mg/kg in soil, and lead content averagely drops
Low 31.65%.Cadmium average content is 105.00mg/kg in soil, and content averagely reduces 31.86%.ZINC IN SOIL
Average content is 340.70mg/kg, and Zn content averagely reduces 32.36%.
With restorative procedure described in embodiment 5, the average content of lead is 185.88mg/kg in soil, and lead content averagely drops
Low 35.78%.Cadmium average content is 115.04mg/kg in soil, and content averagely reduces 25.35%.ZINC IN SOIL
Average content is 328.16mg/kg, and Zn content averagely reduces 34.85%.
It can be seen that there is the restorative procedure of north abandoned location of industry and mining heavy metal pollution provided by the invention good heavy metal to repair
Multiple effect.
The operation principle of the present invention：Smooth processing is carried out for ground boss, contaminated soil is excavated, is added
Enter stabilizer, a part of heavy metal in contaminated soil is made to be transformed into non-live condition, lay one layer of special preparation again later includes
The nutrient matrix layer of seed utilizes plants enriched effect extracting heavy metal ions.
Beneficial effects of the present invention：
1. " immobilization-is plants enriched " combined remediation technology can first fix the heavy metal in soil, then pass through plant
Enrichment extraction soil in heavy metal ion, be finally reached the purpose of rehabilitating soil.Two kinds of technologies play complementary work
With, and their advantages respectively can be given full play to.
Carried out on stable contaminated soil 2. nutrient matrix layer provided by the invention is laid in, make plant early growth period not
It is in direct contact with heavy metal ion, and matrix nutrition is abundant, can promote the quick healthy growth of plant.
3, the HDPE antiseepage films being laid with can be cut off dirty caused by pollutant in soil migrates downward vertically with surface water
It contaminates, the heavy metal in limitation soil, which migrates downward into, to be polluted.
Claims (8)
1. a kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution, which is characterized in that include the following steps：
Region to be repaired is arranged, by removings such as sundries, weeds, rubbish, smooth processing is carried out for ground boss, is ensured
25 ° of the gradient is laid with one layer of HDPE antiseepage film, the soil excavated and stabilization hereinafter, excavate contaminated soil, in bottom of foundation ditch
Agent backfills after evenly mixing in antiseepage film, sows grass seeds by duster one layer of nutrient matrix layer for including seed in backfill soil top.
2. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 1, which is characterized in that institute
It includes following components and its weight, oyster shell whiting 2-10%, calcium magnesium phosphate 3-12%, carboxymethyl chitosan 1- to state stabilizer
9%.
3. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 2, which is characterized in that institute
State stabilizer include following components and its with dry ground weight proportion, oyster shell whiting 10%, calcium magnesium phosphate 12%, carboxymethyl chitosan
9%.
4. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 1, which is characterized in that institute
State nutrient matrix layer include following components and its with dry ground weight proportion：Clay 10-24%, perlite 10-18%, plant fiber
9-24%, montmorillonite 8-15%, controlled-release compound fertilizer 1-5%, organic matter 20-40%, granule agent 0.35-0.38%, seed 0.5-
3%.
5. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 4, which is characterized in that institute
It is polyacrylate to state granule agent.
6. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 4, which is characterized in that institute
The seed for stating nutrient matrix layer is one or more of white thorn, sacsaoul, hedysarum scoparium, Caragana korshinskii, alfalfa, shrub lespedeza.
7. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 1-6 any one,
It is characterized in that, area to be repaired soil excavating depth is 40~60cm.
8. a kind of restorative procedure of northern abandoned location of industry and mining heavy metal pollution according to claim 1-6 any one,
It is characterized in that, the thickness of sowing grass seeds by duster of the nutrient matrix layer is 4~7cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852844.7A CN108607874A (en) | 2018-07-30 | 2018-07-30 | A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852844.7A CN108607874A (en) | 2018-07-30 | 2018-07-30 | A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108607874A true CN108607874A (en) | 2018-10-02 |
Family
ID=63666960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810852844.7A Pending CN108607874A (en) | 2018-07-30 | 2018-07-30 | A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108607874A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675919A (en) * | 2019-01-24 | 2019-04-26 | 圣清环保股份有限公司 | A kind of preparation and elution engineering practice method in situ of heavy metal pollution of soil leacheate |
| CN110369470A (en) * | 2019-08-23 | 2019-10-25 | 武汉市园林建筑工程公司 | A kind of method of soil pollution reparation |
| CN115193901A (en) * | 2022-08-15 | 2022-10-18 | 青岛冠中环境技术有限公司 | Treatment method for heavy metal polluted saline-alkali soil |
| CN115254945A (en) * | 2022-07-27 | 2022-11-01 | 生态环境部南京环境科学研究所 | Mining area water and soil pollution treatment and ecological restoration cooperative control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259192A (en) * | 2014-09-24 | 2015-01-07 | 长江水利委员会长江科学院 | Ecological water conservancy restoration system and method for heavy metal polluted farmland soil |
| CN105772501A (en) * | 2016-04-29 | 2016-07-20 | 浙江博世华环保科技有限公司 | Phytoremediation method for underground soil pollution |
| CN106825007A (en) * | 2016-12-06 | 2017-06-13 | 广州富生源环保工程有限公司 | A kind of method for administering heavy-metal contaminated soil |
| CN107774708A (en) * | 2017-10-31 | 2018-03-09 | 中冶华天工程技术有限公司 | Mining area periphery polluted farmland soil is administered and repair system method |
| CN108246798A (en) * | 2017-12-28 | 2018-07-06 | 青岛冠中生态股份有限公司 | Utilize the method for spray seeding technique restoration of soil polluted by heavy metal |
| CN108262341A (en) * | 2018-01-23 | 2018-07-10 | 北京高能时代环境技术股份有限公司 | A kind of quick repair method of heavy metal polluted soil of farmland |
-
2018
- 2018-07-30 CN CN201810852844.7A patent/CN108607874A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259192A (en) * | 2014-09-24 | 2015-01-07 | 长江水利委员会长江科学院 | Ecological water conservancy restoration system and method for heavy metal polluted farmland soil |
| CN105772501A (en) * | 2016-04-29 | 2016-07-20 | 浙江博世华环保科技有限公司 | Phytoremediation method for underground soil pollution |
| CN106825007A (en) * | 2016-12-06 | 2017-06-13 | 广州富生源环保工程有限公司 | A kind of method for administering heavy-metal contaminated soil |
| CN107774708A (en) * | 2017-10-31 | 2018-03-09 | 中冶华天工程技术有限公司 | Mining area periphery polluted farmland soil is administered and repair system method |
| CN108246798A (en) * | 2017-12-28 | 2018-07-06 | 青岛冠中生态股份有限公司 | Utilize the method for spray seeding technique restoration of soil polluted by heavy metal |
| CN108262341A (en) * | 2018-01-23 | 2018-07-10 | 北京高能时代环境技术股份有限公司 | A kind of quick repair method of heavy metal polluted soil of farmland |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675919A (en) * | 2019-01-24 | 2019-04-26 | 圣清环保股份有限公司 | A kind of preparation and elution engineering practice method in situ of heavy metal pollution of soil leacheate |
| CN110369470A (en) * | 2019-08-23 | 2019-10-25 | 武汉市园林建筑工程公司 | A kind of method of soil pollution reparation |
| CN115254945A (en) * | 2022-07-27 | 2022-11-01 | 生态环境部南京环境科学研究所 | Mining area water and soil pollution treatment and ecological restoration cooperative control method |
| CN115193901A (en) * | 2022-08-15 | 2022-10-18 | 青岛冠中环境技术有限公司 | Treatment method for heavy metal polluted saline-alkali soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Schoumans et al. | Mitigation options to reduce phosphorus losses from the agricultural sector and improve surface water quality: a review | |
| Nouri et al. | Application of green remediation on soil salinity treatment: A review on halophytoremediation | |
| CN104529668B (en) | Metal mine soil conditioner, and mine ecological remediation method using metal mine soil conditioner. | |
| CN108607874A (en) | A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution | |
| Sepaskhah et al. | Yield, water and nitrogen-use response of rice to zeolite and nitrogen fertilization in a semi-arid environment | |
| Arriaga et al. | Conventional agricultural production systems and soil functions | |
| CN103004439B (en) | Combined prevention and control method for cadmium exceeding of rice in medium-light cadmium-polluted soil | |
| CN105724016A (en) | Copper mine waste oxidized ore hillock ecological restoration method | |
| US5947041A (en) | Method for using tree crops as pollutant control | |
| CN111515236B (en) | In-situ reduction remediation method for cadmium-polluted farmland | |
| CN108246798A (en) | Utilize the method for spray seeding technique restoration of soil polluted by heavy metal | |
| CN109550773A (en) | Animals and plants joint granule suitable for heavy-metal contaminated soil is sowed grass seeds by duster restorative procedure | |
| Yang et al. | Photosynthesis of alfalfa (Medicago sativa) in response to landfill leachate contamination | |
| Šařec et al. | Influence of manure and activators of organic matter biological transformation on selected soil physical properties of Modal Luvisol. | |
| CN103849405B (en) | Lime dewatered sludge stabilizing agent and the using method thereof of heavy-metal composite pollution soil | |
| CN103843488B (en) | Build the method for topsoil in stony desertification earth's surface with heavy metal polluted bed mud | |
| Cooke et al. | Effect of drying and composting biosolids on the movement of nitrate and phosphate through repacked soil columns under steady-state hydrological conditions | |
| CN107459428A (en) | A kind of farmland soil heavy metals cadmium renovation agent and its application method | |
| Yakovyshyna | Integrated approach of phytostabilization for urban ecosystem soils contaminated with Lead | |
| Biswal et al. | Effect of pollution on physical and chemical properties of soil | |
| CN109110925A (en) | A kind of method of polluted bed mud recycling | |
| RU2618699C1 (en) | Method for biological cleaning of soils contaminated by oil products | |
| CN108164106A (en) | A kind of curing based on abandoned biomass and pollution of river bed mud recycling | |
| CN108941182A (en) | A kind of heavy metals in farmland pollution amelioration agent and restorative procedure | |
| RU2102430C1 (en) | Method of biologically restoring fertile lands polluted with oilfield formation waters in steppe, forest-steppe, and desert zones (versions) |
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 |
Application publication date: 20181002 |
|
| RJ01 | Rejection of invention patent application after publication |