CN109517600A - It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application - Google Patents
It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application Download PDFInfo
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- CN109517600A CN109517600A CN201811415844.7A CN201811415844A CN109517600A CN 109517600 A CN109517600 A CN 109517600A CN 201811415844 A CN201811415844 A CN 201811415844A CN 109517600 A CN109517600 A CN 109517600A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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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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Abstract
The present invention relates to a kind of soil-repairing agent for heavy metal pollution and its application method and application, the renovation agent includes phosphate and pH adjusting agent；The phosphate include ground phosphate rock, calcium magnesium phosphate, bone meal, apatite, in tailing phosphorus ore any one or at least two combination；The pH adjusting agent include oxalic acid, citric acid, in ferrous sulfate any one or at least two combination.The application method of the soil-repairing agent are as follows: soil-repairing agent is mixed with fertilizer, is manured into soil jointly, is turned over, and adjust the water content of soil.By the reasonable compatibility of the phosphate and the pH adjusting agent, the soil-repairing agent made is in the case where ensureing soil fertility, green economy, and has splendid lasting repairing effect to alkalinity or acid heavy metal contaminated soil.
Description
Technical field
The invention belongs to heavy metal-polluted soils to repair field, be related to a kind of soil-repairing agent and its application method and application, especially
It is related to a kind of soil-repairing agent for heavy metal pollution and its application method and application.
Background technique
With the rapid development of global economy, the pollutant containing heavy metal enters soil by all means, causes soil
Earth seriously pollutes, and heavy metal pollution of soil can influence the decline of Crop yield and quality, and can endanger the mankind by food chain
Health, may also lead to the further deterioration of atmosphere and quality of water environment, therefore cause the extensive attention of countries in the world.Soil
Earth heavy metal pollution is the main Soil Environmental Pollution problem in China, every year because the grain of heavy metal pollution is up to more than 1000 tons.
Compared with industrial sites heavy metal pollution, farmland soil heavy metals contaminated area is bigger, is with mild or moderate pollution
Main, the selection needs and mode of agriculture of recovery technique and mode are adapted, and are combined validity, economy and can be pushed away
Wide property.Stabilizing reparation is to be directed to the main recovery technique of heavy-metal contaminated soil at present.The stabilisation of heavy-metal contaminated soil
Reparation refers to is added different types of heavy metal stabilization medicament in contaminated soil, passes through suction in a manner of chemically or physically
The series reactions such as attached, precipitating, complexing, ion exchange and redox, change heavy metal contaminants in the soil there are shapes
State reduces toxicity, the dissolution migration of harmful constituent, the biological effectiveness of pollutant is reduced, to reach repairing effect.By
The influence of the factors such as the domestic existing recovery technique level in China and recovery project practice, the stabilisation of heavy-metal contaminated soil are repaired
Recovering technology because its investment is low, high-efficient, repair the advantages such as quick, easy to operate due to be used widely.
CN104403675A discloses a kind of soil-repairing agent and its system for the fixation of Heavy Metals in Contaminated Soils element
Standby and application.The invention soil-repairing agent is solid powder and granule shape product, by heavy metal-polluted soil chemical fixatives component (A), soil
Heavy metal absorbent component (B), soil conditioner component (C) are uniformly mixed；Content is respectively 20%~80%, 10%
~20%, 10%~60%.The soil-repairing agent can directly mutually be put with by the soil of heavy metal contamination after evenly mixing
It sets or soil-repairing agent is dispersed or dissolved in water, then put after mixing with being stirred by heavy metal contamination soil
It sets, heavy metal element can be made to be fixed, heavy metal fixed rate can reach 95% or more, is finally reached improvement and repairs dirty
Contaminate the purpose of soil.But the renovation agent cannot realize the reparation of alkalinity and acid soil simultaneously.
CN108393344A discloses a kind of method for reducing cadmium accumulation for paddy rice in acid slight cadmium pollution soil, including
Following steps: before acid slight cadmium pollution soil is turned over, soil pH conditioner is uniformly spread fertilizer over the fields in the cadmium pollution soil
The surface of earth, then turns over soil, mixes well, and applies nitrogen, phosphorus, potash fertilizer again after soil water balance；In conjunction with shifting
Cadmium low absorption rice varieties are planted, normal irrigation management is kept.Method of the invention is easy to operate, reliable, is easy to be connect by farmer
By to prevention and treatment heavy metal pollution of soil, ensureing that quality of rice has a very important significance safely using rear quick.But it should
Method can only be for the reparation of acid slight cadmium pollution soil.But this method can only repairing for acid slight cadmium pollution soil
It is multiple.
CN107824609A discloses a heavy metal species soil-repairing agent and preparation method and application.This method first will
Stalk is added in ferrous sulfate solution after crushing, and addition ammonium hydroxide and hydrogen peroxide generation ferric hydroxide gel and stalk cellulose are handed over
It knits, after standing, washing, filtering, drying and grinding, obtains heavy metal soil-repairing agent.It disperses renovation agent in soil and inhales
Attached heavy metal particles, it is bulky grain that then laser irradiation welding, which is reunited, then removes renovation agent through magnetic separation screening machine, be can be realized
The permanent removing of heavy metal in soil.It being compared with the traditional method, processing method of the invention can effectively prevent secondary pollution,
Gained renovation agent adsorption capacity is strong, high-efficient, applied widely, the heavy metal particles in soil can be made permanently to remove, simultaneously
Whole process is at low cost, easy to operate, easy to control, pollution-free, has good comprehensive benefit.But the renovation agent liquid cannot be same
The reparation of Shi Shixian alkalinity and acid soil does not have general applicability.
Therefore, develop it is a kind of suitable for alkalinity and acid heavy metal contaminated soil remediation, and repairing effect significantly and
Lasting soil-repairing agent is necessary.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of soil-repairing agent and its user
Method and application especially provide a kind of soil-repairing agent for heavy metal pollution and its application method and application.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
On the one hand, the present invention provides a kind of soil-repairing agent for heavy metal pollution, and the renovation agent includes phosphate
And pH adjusting agent；The phosphate include ground phosphate rock, calcium magnesium phosphate, bone meal, apatite, in phosphorite tailings any one or
At least two combination, described two combinations such as ground phosphate rock and calcium magnesium phosphate, bone meal and apatite, ground phosphate rock and calcium and magnesium
Phosphate fertilizer and bone meal etc.；The pH adjusting agent include oxalic acid, citric acid, in ferrous sulfate any one or at least two group
It closes, described two combinations such as oxalic acid and citric acid, citric acid and ferrous sulfate, oxalic acid and citric acid and ferrous sulfate etc..
By using oxalic acid, citric acid, ferrous sulfate and ground phosphate rock, calcium magnesium phosphate, bone meal, apatite, phosphorite tailings into
Row compatibility, the soil-repairing agent made is in the case where ensureing soil fertility, green economy；In addition, ground phosphate rock, calcium and magnesium phosphorus
Fertilizer, bone meal, apatite, phosphorite tailings can slowly discharge phosphate radical, oxalic acid, lemon in formula as sustained release acid phosphate
Lemon acid, ferrous sulfate can activate the phosphate radical released, so that the soil-repairing agent is to alkalinity or acid heavy metal
Contaminated soil has splendid lasting repairing effect, has universality.Meanwhile the dosage of the phosphate and pH adjusting agent
Ratio can be adjusted according to the needs of actual conditions.
Preferably, the phosphatic partial size be 0-3mm, such as 0.1mm, 0.5mm, 1mm, 1.2 mm, 1.5mm, 2mm,
2.5mm, 2.7mm or 3mm etc..
Phosphatic partial size is smaller or surface area is bigger, more advantageous to the repairing effect of enhancing soil.
On the other hand, the present invention provides a kind of application method of soil-repairing agent as described above, the method are as follows: will be native
Earth renovation agent is mixed with fertilizer, is manured into soil jointly, is turned over, and adjust the water content of soil.
The application method is simple and easy, and cost is relatively low.
Preferably, in the soil-repairing agent phosphatic sowing amount be soil quality to be repaired 0.2-1%, such as
0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1% etc..
Preferably, in the soil-repairing agent pH adjusting agent sowing amount be soil quality to be repaired 0-5%, such as
0.1%, 1%, 2%, 3%, 4% or 5% etc..
Preferably, the depth turned over be 20-50cm, such as 20cm, 25cm, 30cm, 35cm, 40cm, 45cm or
50cm etc., the number turned over are 2-10 times, such as 2 times, 3 times, 4 times, 5 times, 6 times, 7 times, 8 times, 9 times or 10 are inferior.
Preferably, the water content for adjusting soil be adjusting soil water content to 18-35%, such as 18%,
20%, 25%, 27%, 30%, 32%, 33% or 35% etc..
As the preferred technical solution of the present invention, the application method of the soil-repairing agent specifically comprise the following steps: by
Soil-repairing agent containing phosphate and pH adjusting agent is mixed with fertilizer, is manured into soil jointly, wherein phosphatic sowing amount
For the 0.2-1% of soil quality to be repaired, the sowing amount of pH adjusting agent is the 0-5% of soil quality to be repaired, is carried out 2-10 times
Depth is that 20-50cm is turned over, and adjusts the water content of soil to 18-35%.
In another aspect, the present invention also provides a kind of soil-repairing agents as described above to repair alkalinity or acid heavy metal dirt
Contaminate the application in soil.
Preferably, the heavy metal pollution is cadmium pollution.
Preferably, the heavy metal pollution is lead cadmium combined pollution.
Compared with prior art, the present invention has the advantage that
By using oxalic acid, citric acid, ferrous sulfate and ground phosphate rock, calcium magnesium phosphate, bone meal, apatite, phosphorite tailings into
Row compatibility, the soil-repairing agent made is in the case where ensureing soil fertility, green economy；In addition, ground phosphate rock, calcium and magnesium phosphorus
Fertilizer, bone meal, apatite, phosphorite tailings can slowly discharge phosphate radical, oxalic acid, lemon in formula as sustained release acid phosphate
Lemon acid, ferrous sulfate can activate the phosphate radical released, so that the soil-repairing agent is to alkalinity or acid heavy metal
Contaminated soil has splendid lasting repairing effect, has universality.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred reality of the invention
A to further illustrate the technical scheme of the present invention is applied, but the present invention is not limited in scope of embodiments.
Embodiment 1
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 10.2mg/Kg, total lead 920mg/
Kg, pH value 7.8 use method in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content for measuring soil available Cd is 5.39mg/Kg, and the content of Available Lead is 374mg/Kg.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes bone
Powder and ferrous sulfate, and it is used for the reparation of above-mentioned soil sample, application method are as follows: by the soil-repairing agent and fertilizer
Material mixing, is manured into soil jointly, and wherein the sowing amount of bone meal is the 1% of soil quality to be repaired, the sowing amount of ferrous sulfate
It is the 2.5% of soil quality to be repaired, carrying out 5 depth is turning over for 30cm, and the water content for adjusting soil is supported to 30%
Shield 7 days, during maintenance plus water keeps the water content of soil, and Available Lead content, the available Cd of soil are measured after maintenance
The pH value of content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 56.2%, and the content of Available Lead has dropped
42.1%, the pH value of soil is 7.1.
Embodiment 2
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 4.5mg/Kg, total lead 3467mg/
Kg, pH value 5.53 use side in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content that method measures soil available Cd is 3.57mg/Kg, and the content of Available Lead is 1601mg/Kg.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes bone
Powder and ferrous sulfate, and it is used for the reparation of above-mentioned soil sample, application method are as follows: by the soil-repairing agent and fertilizer
Material mixing, is manured into soil jointly, and wherein the sowing amount of bone meal is the 1% of soil quality to be repaired, the sowing amount of ferrous sulfate
It is the 0.5% of soil quality to be repaired, carrying out 5 depth is turning over for 30cm, and the water content for adjusting soil is supported to 30%
Shield 14 days, during maintenance plus water keeps the water content of soil, and Available Lead content, the available state of soil are measured after maintenance
The pH value of cadmium content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 48.5%, and the content of Available Lead has dropped
22.7%, the pH value of soil is 4.85.
Embodiment 3
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 10.2mg/Kg, total lead 920mg/
Kg, pH value 7.8 use method in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content for measuring soil available Cd is 5.39mg/Kg, and the content of Available Lead is 374mg/Kg.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and citric acid, and be used for the reparation of above-mentioned soil sample, application method are as follows: by the soil-repairing agent with
Fertilizer mixing, is manured into soil jointly, and wherein the sowing amount of calcium magnesium phosphate is the 0.2% of soil quality to be repaired, citric acid
Sowing amount is the 2% of soil quality to be repaired, carries out 3 depth and is that 50cm being turned over, and adjust the water content of soil to
35%, conserve 7 days, during maintenance plus water keep soil water content, after maintenance measure soil Available Lead content,
The pH value of available Cd content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 41.8%, and the content of Available Lead has dropped
21.5%, the pH value of soil is 7.5.
Embodiment 4
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 4.5mg/Kg, total lead 3467mg/
Kg, pH value 5.53 use side in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content that method measures soil available Cd is 3.57mg/Kg, and the content of Available Lead is 1601mg/Kg.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and citric acid, and be used for the reparation of above-mentioned soil sample, application method are as follows: by the soil-repairing agent with
Fertilizer mixing, is manured into soil jointly, and wherein the sowing amount of calcium magnesium phosphate is the 0.5% of soil quality to be repaired, citric acid
Sowing amount is the 0.25% of soil quality to be repaired, carries out 10 depth and is that 20cm being turned over, and adjust the water content of soil to
18%, conserve 14 days, during maintenance plus water keep soil water content, after maintenance measure soil Available Lead content,
The pH value of available Cd content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 38.9%, and the content of Available Lead has dropped
18.3%, the pH value of soil is 5.26.
Embodiment 5
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 10.2mg/Kg, total lead 920mg/
Kg, pH value 7.8 use method in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content for measuring soil available Cd is 5.39mg/Kg, and the content of Available Lead is 374mg/Kg.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes phosphorus
Miberal powder, calcium magnesium phosphate, oxalic acid and citric acid, and it is used for the reparation of above-mentioned soil sample, application method are as follows: it will be described
Soil-repairing agent is mixed with fertilizer, is manured into soil jointly, and wherein the sowing amount of calcium magnesium phosphate is soil quality to be repaired
0.5%, the sowing amount of ground phosphate rock is the 0.5% of soil quality to be repaired, and the sowing amount of citric acid is soil quality to be repaired
2.5%, the sowing amount of oxalic acid is the 2% of soil quality to be repaired, and carrying out 5 depth is turning over for 25cm, and adjusts soil
Water content conserves 7 days, during maintenance plus water keeps the water content of soil, and the available state of soil is measured after maintenance to 25%
The pH value of lead content, available Cd content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 57.8%, and the content of Available Lead has dropped
33.6%, the pH value of soil is 7.0.
Embodiment 6
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 4.5mg/Kg, total lead 3467mg/
Kg, pH value 5.53 use side in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content that method measures soil available Cd is 3.57mg/Kg, and the content of Available Lead is 1601mg/Kg.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes phosphorus
Miberal powder, calcium magnesium phosphate, oxalic acid and citric acid, and it is used for the reparation of above-mentioned soil sample, application method are as follows: it will be described
Soil-repairing agent is mixed with fertilizer, is manured into soil jointly, and wherein the sowing amount of calcium magnesium phosphate is soil quality to be repaired
0.5%, the sowing amount of ground phosphate rock is the 0.5% of soil quality to be repaired, and the sowing amount of citric acid is soil quality to be repaired
0.25%, the sowing amount of oxalic acid is the 0.25% of soil quality to be repaired, and carrying out 5 depth is turning over for 25cm, and adjusts soil
The water content of earth conserves 14 days, during maintenance plus water keeps the water content of soil, and soil is measured after maintenance to 25%
The pH value of Available Lead content, available Cd content and soil.
Measurement result are as follows: the content of soil available Cd has dropped 49.1%, and the content of Available Lead has dropped
23.7%, the pH value of soil is 4.92.
Embodiment 7
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 10.2mg/Kg, total lead 920mg/
Kg, pH value 7.8 use method in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content for measuring soil available Cd is 5.39mg/Kg, and the content of Available Lead is 374mg/Kg.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes bone
Powder, ground phosphate rock, calcium magnesium phosphate, oxalic acid and ferrous sulfate, and it is used for the reparation of above-mentioned soil sample, application method are as follows:
The soil-repairing agent mixed with fertilizer, is manured into soil jointly, wherein the sowing amount of bone meal is soil quality to be repaired
0.2%, the sowing amount of calcium magnesium phosphate is the 0.2% of soil quality to be repaired, and the sowing amount of ground phosphate rock is soil quality to be repaired
0.6%, the sowing amount of ferrous sulfate is the 0.5% of soil quality to be repaired, and the sowing amount of oxalic acid is soil quality to be repaired
0.5%, carry out 10 depth and be that 20cm being turned over, and adjust the water content of soil to 35%, conserve 7 days, during maintenance plus
Water keeps the water content of soil, and the Available Lead content of soil, the pH of available Cd content and soil are measured after maintenance
Value.
Measurement result are as follows: the content of soil available Cd has dropped 28.5%, and the content of Available Lead has dropped
49.2%, the pH value of soil is 7.1.
Embodiment 8
In the soil sample that the present embodiment uses the case where pollutant load are as follows: total cadmium 4.5mg/Kg, total lead 3467mg/
Kg, pH value 5.53 use side in " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T 23739-2009 "
The content that method measures soil available Cd is 3.57mg/Kg, and the content of Available Lead is 1601mg/Kg.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes bone
Powder, ground phosphate rock, calcium magnesium phosphate, oxalic acid and ferrous sulfate, and it is used for the reparation of above-mentioned soil sample, application method are as follows:
The soil-repairing agent mixed with fertilizer, is manured into soil jointly, wherein the sowing amount of bone meal is soil quality to be repaired
0.2%, the sowing amount of calcium magnesium phosphate is the 0.2% of soil quality to be repaired, and the sowing amount of ground phosphate rock is soil quality to be repaired
0.6%, the sowing amount of ferrous sulfate is the 0.1% of soil quality to be repaired, and the sowing amount of oxalic acid is soil quality to be repaired
0.1%, carry out 3 depth and be that 40cm being turned over, and adjust the water content of soil to 30%, conserve 14 days, during maintenance plus
Water keeps the water content of soil, and the Available Lead content of soil, the pH of available Cd content and soil are measured after maintenance
Value.
Measurement result are as follows: the content of soil available Cd has dropped 46.2%, and the content of Available Lead has dropped
28.7%, the pH value of soil is 4.84.
Comparative example 1
The soil sample that the present embodiment uses is identical as embodiment 1.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and malic acid, and it is used for the reparation of above-mentioned basic soil sample, the survey of application method and its content of beary metal
It is same as Example 1 to determine method.
Measurement result are as follows: the content of soil available Cd increases 44%, and the content of Available Lead increases 68%,
The pH value of soil is 8.19.
Comparative example 2
The soil sample that the present embodiment uses is identical as embodiment 2.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and malic acid, and it is used for the reparation of above-mentioned acid soil sample, the survey of application method and its content of beary metal
It is same as Example 2 to determine method.
Measurement result are as follows: the content of soil available Cd increases 31.2%, and the content of Available Lead increases
53.3%, the pH value of soil is 6.07.
Comparative example 3
The soil sample that the present embodiment uses is identical as embodiment 1.
The present embodiment provides one kind to be used for alkaline heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and hydrochloric acid, and it is used for the reparation of above-mentioned basic soil sample, the measurement of application method and its content of beary metal
Method is same as Example 1.
Measurement result are as follows: the content of soil available Cd increases 76.2%, and the content of Available Lead increases
65.8%, the pH value of soil is 6.95.
Comparative example 4
The soil sample that the present embodiment uses is identical as embodiment 2.
The present embodiment provides one kind to be used for acid heavy metal contaminated soil renovation agent, and the soil-repairing agent includes calcium
Magnesium-phosphorus fertilizer and hydrochloric acid, and it is used for the reparation of above-mentioned acid soil sample, the measurement of application method and its content of beary metal
Method is same as Example 2.
Measurement result are as follows: the content of soil available Cd increases 81.2%, and the content of Available Lead increases
73.6%, the pH value of soil is 4.97.
From the measurement result of embodiment 1-8 and comparative example 1-4: when oxalic acid, citric acid, ferrous sulfate and ground phosphate rock,
When calcium magnesium phosphate, bone meal, apatite, phosphorite tailings are as soil-repairing agent compatible use, alkalinity or acid heavy metal can be made
The content of available Cd and lead in contaminated soil significantly reduces；When the phosphate and other kinds of pH adjusting agent compatibility
In use, the content of alkalinity or the available Cd in acid heavy metal contaminated soil and lead cannot be made to be reduced, rise instead
It is high.
The Applicant declares that the present invention is explained by the above embodiments, the soil for heavy metal pollution of the invention is repaired
Multiple agent and its application method and application, but the present invention is not limited to the above embodiments, that is, does not mean that the present invention must rely on
Above-described embodiment could be implemented.It should be clear to those skilled in the art, any improvement in the present invention, to this hair
The equivalence replacement of bright each raw material of product and addition, the selection of concrete mode of auxiliary element etc., all fall within protection model of the invention
Enclose within the open scope.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail, within the scope of the technical concept of the present invention, can with various simple variants of the technical solution of the present invention are made,
These simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention is to various
No further explanation will be given for possible combination.
Claims (10)
1. a kind of soil-repairing agent for heavy metal pollution, which is characterized in that the soil-repairing agent includes phosphate and pH
Regulator；The phosphate include ground phosphate rock, calcium magnesium phosphate, bone meal, apatite, in phosphorite tailings any one or at least two
The combination of kind；The pH adjusting agent include oxalic acid, citric acid, in ferrous sulfate any one or at least two combination.
2. soil-repairing agent as described in claim 1, which is characterized in that the phosphatic partial size is 0-3mm.
3. the application method of soil-repairing agent as claimed in claim 1 or 2, which is characterized in that the method are as follows: by soil remediation
Agent is mixed with fertilizer, is manured into soil jointly, is turned over, and adjust the water content of soil.
4. application method as claimed in claim 3, which is characterized in that in the soil-repairing agent phosphatic sowing amount be to
The 0.2-1% of rehabilitating soil quality.
5. application method as claimed in claim 3, which is characterized in that the sowing amount of pH adjusting agent is in the soil-repairing agent
The 0-5% of soil quality to be repaired.
6. the application method as described in any one of claim 3-5, which is characterized in that the depth turned over is 20-50cm,
The number turned over is 2-10 times.
7. the application method as described in any one of claim 3-6, which is characterized in that the water content for adjusting soil is to adjust
The water content of soil is saved to 18-35%.
8. the application method as described in any one of claim 3-7, which is characterized in that the method specifically includes following step
It is rapid: the soil-repairing agent containing phosphate and pH adjusting agent being mixed with fertilizer, is manured into soil jointly, wherein phosphatic apply
Enter the 0.2-1% that amount is soil quality to be repaired, the sowing amount of pH adjusting agent is the 0-5% of soil quality to be repaired, carries out 3-
10 depth are turning over for 20-50cm, and adjust the water content of soil to 18-35%.
9. soil-repairing agent as claimed in claim 1 or 2 is repairing the application in alkalinity or acid heavy metal contaminated soil.
10. application as claimed in claim 9, which is characterized in that the heavy metal pollution is cadmium pollution；
Preferably, the heavy metal pollution is lead cadmium combined pollution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415844.7A CN109517600A (en) | 2018-11-26 | 2018-11-26 | It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415844.7A CN109517600A (en) | 2018-11-26 | 2018-11-26 | It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application |
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| CN109517600A true CN109517600A (en) | 2019-03-26 |
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| CN110040919A (en) * | 2019-04-19 | 2019-07-23 | 辽宁大学 | A kind of compound phosphorous passivator of ground phosphate rock-phosphate and its preparation method and application |
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| CN112645757A (en) * | 2020-12-29 | 2021-04-13 | 中盐安徽红四方肥业股份有限公司 | Fertilizer suitable for soil remediation and preparation method thereof |
| CN113877954A (en) * | 2021-09-26 | 2022-01-04 | 中国地质大学（北京） | Passivation restoration agent for cadmium-polluted soil and preparation method and application thereof |
| CN114015454A (en) * | 2021-11-17 | 2022-02-08 | 中南大学 | Slow-release iron-phosphorus composite material and preparation method and application thereof |
| CN114752388A (en) * | 2022-05-13 | 2022-07-15 | 哈尔滨工业大学 | Stabilizer for copper, chromium and lead compound contaminated soil and preparation method and application thereof |
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| CN110040919A (en) * | 2019-04-19 | 2019-07-23 | 辽宁大学 | A kind of compound phosphorous passivator of ground phosphate rock-phosphate and its preparation method and application |
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| CN110105958A (en) * | 2019-06-14 | 2019-08-09 | 许昌学院 | A kind of the mine soil reparation reagent and its application method of heavy metal lead pollution |
| CN110252798A (en) * | 2019-07-23 | 2019-09-20 | 北京南科大蓝色科技有限公司 | A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes |
| CN112645757A (en) * | 2020-12-29 | 2021-04-13 | 中盐安徽红四方肥业股份有限公司 | Fertilizer suitable for soil remediation and preparation method thereof |
| CN113877954A (en) * | 2021-09-26 | 2022-01-04 | 中国地质大学（北京） | Passivation restoration agent for cadmium-polluted soil and preparation method and application thereof |
| CN113877954B (en) * | 2021-09-26 | 2023-06-06 | 中国地质大学（北京） | Passivation restoration agent for cadmium-polluted soil and preparation method and application thereof |
| CN114015454A (en) * | 2021-11-17 | 2022-02-08 | 中南大学 | Slow-release iron-phosphorus composite material and preparation method and application thereof |
| CN114752388A (en) * | 2022-05-13 | 2022-07-15 | 哈尔滨工业大学 | Stabilizer for copper, chromium and lead compound contaminated soil and preparation method and application thereof |
| CN114752388B (en) * | 2022-05-13 | 2024-03-29 | 哈尔滨工业大学 | Stabilizing agent for copper, chromium and lead composite polluted soil and preparation method and application thereof |
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