CN110252798A - A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes - Google Patents
A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes Download PDFInfo
- Publication number
- CN110252798A CN110252798A CN201910667721.0A CN201910667721A CN110252798A CN 110252798 A CN110252798 A CN 110252798A CN 201910667721 A CN201910667721 A CN 201910667721A CN 110252798 A CN110252798 A CN 110252798A
- Authority
- CN
- China
- Prior art keywords
- soil
- complex repairation
- repairation medicament
- medicament
- heavy
- 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
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention provides a kind of heavy-metal contaminated soil complex repairation medicament and its application methods and purposes, and the complex repairation medicament includes following components by weight: 5~100 parts of inorganic phosphate；5~100 parts of bone meal；1~5 part of bentonite；1~5 part of charcoal.Complex repairation medicament of the present invention is with containing leading based on phosphorus component, pass through Phos and organic phosphorus synergistic effect, cooperate the static stabilization of other components again, counterweight metal combined contamination soil has preferable repairing effect, and soil available Cd, lead content can be greatly reduced；The application range of the complex repairation medicament is extended according to soil pH and content of beary metal regulating agent dosage and component proportion for different types of contaminated soil；The complex repairation reagent cost is lower, environmentally protective, easy to use, influences on soil property smaller.
Description
Technical field
The invention belongs to contaminated soil remediation technical field, be related to a kind of heavy-metal contaminated soil complex repairation medicament and its
Application method and purposes.
Background technique
With the continuous development of modern agriculture, the pollution becoming serious of soil, wherein heavy metal is in the soil compared with it
He stablizes pollutant, is not easy to convert and be utilized by microorganism, forms the characteristic accumulated in the soil, but heavy metal is with different
Form is present in soil, and wherein available heavy metal can be absorbed by plants, and is enriched in human body via food chain, works as product
Tire out certain content, then seriously threatens the health of the mankind.Therefore, how to adopt an effective measure and repair farmland pollution soil, reduce
Enrichment of the heavy metal in agricultural product, so that ensuring food safety has become that current one is important to grind with agricultural sustainable development
Study carefully project.
Currently, the restorative procedure of heavy-metal contaminated soil mainly includes peripheral doses, chemical remediation and biological prosthetic etc.,
In, chemical remediation is directed to contaminated soil, puts into modifying agent, inhibitor in water body, makes heavy metal ion that absorption, oxidation occur also
The effects of former, precipitating or antagonism, to reduce its biological effectiveness.Compared with other restorative procedures, although chemical remediation easily produces
Raw secondary pollution, but its repair time is short, expense is low, applied widely, effect is obvious, method relative maturity, it is low dense in
Spend the contaminated soil of heavy metal with good application prospect.The common stabilization agent of heavy-metal contaminated soil reparation includes alkali
Property medicament, medicament of phosphate, clay mineral, sulfide, heavy metal chelant, organic medicament, slag etc., different stabilization agents
With different passivating process and repair mechanism, stabilization procedures are different, and repairing effect is also different.
Stabilization Remediation Technology in situ seldom passes through single reaction in the practical application that heavy metal pollution of soil is administered
Mechanism realizes that typically a variety of reaction mechanisms act on simultaneously, it is therefore desirable to which plurality of stable agent uses simultaneously.CN
105586044A discloses a kind of composite passivant suitable for paddy soil cadmium pollution, with chitosan, sodium bentonite, bone
Powder, lime, charcoal, ZnO and nanometer Fe O are primary raw material composition, include basic agent in composition, clay mineral, have
The components such as machine medicament carry out repairing polluted soil by the cooperation of various medicaments, but the passivator to acid soil applicability compared with
It is good, but the treatment effect of basic soil is obviously weakened, restricted application.CN 108085010A discloses a kind of for soil
The complex repairation agent and its application of earth heavy metal pollution, including sodium bentonite, bone meal, chitosan, oyster shell powder, graphene change
Property farm crop straw organism charcoal, biological organic fertilizer, sodium metasilicate, nanometer Fe O, carbon nanotubes and microbial bacterial agent, the renovation agent
Middle material category is numerous, wherein complicated component in biological organic fertilizer and microbial bacterial agent, it is difficult to determine its it is specific act on, be unfavorable for
The quantization of medicament uses.
In conclusion the selection of the chemical remediation medicament of heavy-metal contaminated soil also needs the environmental quality in conjunction with soil, it is more
Kind material matching is combined into environmentally protective, economical rationality stabilization agent, to reach ideal repairing effect.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of heavy-metal contaminated soil complex repairations
Medicament and its application method and purposes, with containing leading based on phosphorus component in the complex repairation medicament, by Phos and organic phosphorus
Synergistic effect, then cooperate the static stabilization of other components, can reach preferable for different types of contaminated soil
Repairing effect；The complex repairation reagent cost is lower, small to Influence To Soil.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of heavy-metal contaminated soil complex repairation medicament, the complex repairation medicament
By weight include following components:
Wherein, the parts by weight of inorganic phosphate can be 5 parts, 20 parts, 40 parts, 60 parts, 80 parts or 100 parts etc.；Bone meal
Parts by weight can be 5 parts, 20 parts, 40 parts, 60 parts, 80 parts or 100 parts etc.；Bentonitic parts by weight can for 1 part, 2 parts, 3 parts,
4 parts or 5 parts etc.；The parts by weight of charcoal can be 1 part, 2 parts, 3 parts, 4 parts or 5 parts etc..
In complex repairation medicament of the invention, inorganic phosphate is soluble phosphate, and phosphorus therein is with the shape of Phos
Formula exists, and then contains phosphate radical in bone meal, and the phosphate radical that the former forms after quickly dissolving can be formed with heavy metal ion and be precipitated, after
Person is then a kind of organic phosphatic fertiliser, and contained phosphorus element release is slightly slow, and one side heavy metal ions in soil can be adsorbed directly by bone meal,
On the other hand, the phosphate radical being sustained can also form calcium phosphate precipitation with heavy metal ion, and the two is used cooperatively, can reach in short term
To stabilization effect, and be conducive to the long-term effectiveness of soil remediation medicament, greatly extend the service life for repairing medicament,
While rehabilitating soil, improve soil fertility；Along with bentonite, the suction-operated of charcoal and to the tune of soil pH
Section, so that the reparation medicament is applicable to different types of contaminated soil, adjusts its use according to soil pH and content of beary metal
Amount and component proportion, reach better repairing effect.
In the present invention, if inorganic phosphate weight ratio is higher, soil pH is relatively low, will cause soil acidification, influences
Plant growth；And if the weight ratio of bone meal is higher, it is higher that it will cause soil pHs, equally soil physico-chemical property is caused to change
Become.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, the complex repairation medicament further includes pH adjusting agent, the pH adjusting agent
Parts by weight be 0~100 part, such as 0 part, 10 parts, 30 parts, 50 parts, 70 parts, 90 parts or 100 parts etc., it is not limited to listed
The numerical value of act, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the pH adjusting agent includes ferrous sulfate and/or oxalic acid.
In the present invention, according to the difference of pollutant, the environmental condition of soil also can be different, such as pH, to make to repair medicament
Component can ingredient play a role, it is sometimes desirable to add pH adjusting agent, to adjust the pH value of soil, and pH adjusting agent need it is full
Sufficient green non-pollution does not generate harm to agricultural land soil and its crops；Bone meal used in the present invention is generally more difficult by plant
It utilizes, the pH adjusting agent can also play the role of activating bone meal, improve its utilization efficiency.Meanwhile pH used in the present invention
Regulator is mainly largely added when handling basic soil in acidity, is then added or is not added on a small quantity when handling acid soil.
As currently preferred technical solution, the complex repairation medicament includes following components by weight:
As currently preferred technical solution, the inorganic phosphate is inorganic soluble acid phosphate.
In the present invention, inorganic phosphate generally comprises phosphoric acid normal salt, dibasic alkaliine and dihydric phosphate, wherein soluble
Phosphate generally comprises all dihydric phosphate and sylvite, sodium salt and ammonium salt in phosphoric acid normal salt, dibasic alkaliine.
Preferably, the inorganic phosphate include any one in potassium dihydrogen phosphate, ammonium dihydrogen phosphate or calcium superphosphate or
At least two combination, the combination is typical but non-limiting example has: the combination of potassium dihydrogen phosphate and ammonium dihydrogen phosphate, phosphoric acid
The combination of ammonium dihydrogen and calcium superphosphate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate and combination of calcium superphosphate etc..
Inorganic phosphate used in the present invention is mainly acid-soluble acid phosphate, can quickly be dissolved, and soil is accelerated
Reparation rate；The optional common potassium dihydrogen phosphate phosphate fertilizer of potassium dihydrogen phosphate used, pH are acidity, the phosphate radical formed after dissolution
It can be formed and be precipitated with heavy metal ion such as cadmium, lead.
Preferably, the bone meal be organic phosphatic fertiliser, phosphorus content be 10~15wt%, such as 10wt%, 11wt%,
12wt%, 13wt%, 14wt% or 15wt% etc., it is not limited to cited numerical value, interior other of the numberical range are not arranged
The numerical value of act is equally applicable.
In the present invention, the bone meal is a kind of organic phosphatic fertiliser in pale powder, is formed through high temperature degreasing working process,
PH value is about 7.3, meta-alkalescence, and phosphorus element release therein slowly, can be used cooperatively with inorganic phosphate, improve the reparation of medicament
Effect is alternatively arranged as fertilizer later, and root, not burn seedlings, not plate soil are not hurt in long-time service, to raising soil organic matter content and improvement
Soil significant effect；Bone meal partial size used is smaller, better to the repairing effect of soil, and bone meal grain diameter used is no more than 2mm.
Preferably, the bentonite includes sodium bentonite.
Preferably, the bentonitic partial size is 1000~1500 mesh, such as 1000 mesh, 1100 mesh, 1200 mesh, 1300
Mesh, 1400 mesh or 1500 mesh etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are same
It is applicable in.
Preferably, the type of the charcoal includes any one in turf, bone black, rice hull carbon or plant ash or at least two
The combination of kind, the combination is typical but non-limiting example has: the combination of the combination of turf and bone black, bone black and rice hull carbon, grass
The combination of charcoal, rice hull carbon and plant ash, bone black, rice hull carbon and plant ash etc..
In the present invention, bentonite used belongs to clay mineral, belongs to natural non-metallic mineral products, structure of matter layer electrification
Lotus, large specific surface area can be reduced the concentration and activity of heavy metal ion in the soil liquid by absorption or complexation reaction, reach steady
Surely the purpose changed.
The pH value of soil can be improved in charcoal used, increases soil particle surface negative charge, enhances to heavy metal ion
Electrostatic adsorption, in addition, that free state heavy metal ion can be made to form hydroxide, carbonate or phosphate is heavy for the raising of pH
It forms sediment, facilitates the stabilisation of heavy metal-polluted soil.Wherein the content of organic matter exists in 70wt% or more, nutrient total content in turf
1.65wt% or more, content of humic acid is in 15wt% or more.
As currently preferred technical solution, the complex repairation medicament includes following components by weight:
Second aspect, the present invention provides a kind of application method of above-mentioned complex repairation medicament, the application method includes:
The complex repairation medicament of formula ratio is applied in heavy-metal contaminated soil, mixes it uniformly with soil, keeps soil moisture content,
It is conserved.
As currently preferred technical solution, the heavy metal in the heavy-metal contaminated soil includes cadmium and/or lead.
In the present invention, common heavy metal-polluted soil mainly includes cadmium, mercury, copper, lead, chromium, zinc, nickel, although arsenic be it is nonmetallic,
Also be often attributed to it is such, wherein especially most commonly seen with cadmium, lead contamination.
Preferably, the usage amount of the complex repairation medicament be soil quality 0.5~5wt%, such as 0.5wt%,
1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt% or 5wt% etc., it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
In the present invention, the usage amount of complex repairation medicament is mainly adjusted according to the content of heavy metal in soil, heavy metal
When content is higher, need to increase the additive amount of medicament.
Soil moisture in the present invention comes from nature rainwater and/or artificial watering, make the water content of its soil reach 20~
40%, such as 20%, 25%, 30%, 35% or 40% etc., wherein soil moisture content refers to that moisture content accounts for corresponding soils portion
The mass fraction divided.
As currently preferred technical solution, the hybrid mode of the complex repairation medicament and soil is to turn over.
Preferably, the ploughed depth is 15~30cm, such as 15cm, 18cm, 20cm, 22cm, 25cm, 27cm or 30cm
Deng it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, the number of turning over is 2~5 times, such as 2 times, 3 times, 4 times or 5 times.
As currently preferred technical solution, during the complex repairation medicament and fertilizer are manured into soil jointly.
Preferably, the time that the soil is conserved is 7~60 days, such as 7 days, 14 days, 21 days, 28 days, 35 days, 42
It, 49 days, 56 days or 60 days etc., it is not limited to cited numerical value, other unlisted numerical value are same in the numberical range
Sample is applicable in.
As currently preferred technical solution, the application method includes: by the complex repairation medicament of formula ratio and fertilizer
Material is common to be applied in heavy-metal contaminated soil, and the usage amount of complex repairation medicament is 0.5~5wt% of soil quality, by turning over
Ploughing mixes it uniformly with soil, and ploughed depth is 15~30cm, and turning over number is 2~5 times, and soil moisture content is kept to reach 20
~40%, it conserves 7~60 days.
The third aspect, the present invention provides a kind of purposes of above-mentioned complex repairation medicament, the complex repairation medicament is used for
The reparation of heavy-metal contaminated soil.
In the present invention, common heavy metal-polluted soil mainly includes cadmium, mercury, copper, lead, chromium, zinc, nickel, although arsenic be it is nonmetallic,
Also be often attributed to it is such, wherein especially most commonly seen with cadmium, lead contamination.
Compared with prior art, the invention has the following advantages:
(1) complex repairation medicament of the present invention is containing leading based on phosphorus component, to pass through Phos and organic phosphorus collaboration is made
With, then cooperating the static stabilization of other components, counterweight metal combined contamination soil has preferable repairing effect, has in soil
Effect state cadmium content can reduce by 35~80%, and Available Lead content can reduce by 40~80%；
(2) present invention is directed to different types of contaminated soil, according to soil pH and content of beary metal regulating agent dosage and
Component proportion extends the application range of the complex repairation medicament；
(3) complex repairation reagent cost of the present invention is lower, environmentally protective, easy to use, influences on soil property smaller.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only simple example of the invention, does not represent or limit the scope of the present invention, this hair
Bright protection scope is subject to claims.
Specific embodiment of the invention part provides a kind of heavy-metal contaminated soil complex repairation medicament and its user
Method and purposes, the complex repairation medicament includes following components by weight: 5~100 parts of inorganic phosphate；Bone meal 5~100
Part；1~5 part of bentonite；1~5 part of charcoal.
Its application method includes: to apply the complex repairation medicament of above-mentioned formula ratio in heavy-metal contaminated soil, make its with
Soil uniformly mixes, and keeps soil moisture content, is conserved.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1:
A kind of heavy-metal contaminated soil complex repairation medicament and its application method are present embodiments provided, wherein heavy metal-polluted
Dye soil is lead, cadmium combined pollution soil, according to " soil quality Available Lead and Cadmium detrmination atomic absorption method GB/T
23739-2009 " method measurement, soil available Cd content is 3.5mg/kg, and Available Lead content is 740mg/kg, and pH is
8.43。
The complex repairation medicament includes following components by weight: 6.5 parts of potassium dihydrogen phosphate, 5 parts of bone meal, sulfuric acid are sub-
5 parts of iron, 1 part of sodium bentonite, 1 part of turf.
Its application method includes: that the complex repairation medicament of above-mentioned formula ratio and fertilizer are applied the heavy metal pollution jointly
In soil, the usage amount of complex repairation medicament is the 2wt% of soil quality, mixes it uniformly with soil by turning over, turns over
Depth is 15cm, and turning over number is 3 times, adds water that soil moisture content is made to reach 30%, is conserved 7 days, and during maintenance plus water keeps soil
Earth is wet.
After maintenance, using Available Lead, the content of available Cd and soil pH in same method testing soil.
It is calculated in the present embodiment, after test it is found that soil available Cd content reduction by 58.65%, Available Lead content
52.21% is reduced, free state content of beary metal is substantially reduced；And soil pH is 7.56, variation is little.
Embodiment 2:
A kind of heavy-metal contaminated soil complex repairation medicament and its application method are present embodiments provided, wherein heavy metal-polluted
Dye soil is lead, cadmium combined pollution soil, and using the method in embodiment 1, measuring soil available Cd content is
3.575mg/kg, Available Lead content are 1601.25mg/kg, pH 5.53.
The complex repairation medicament includes following components by weight: 10 parts of potassium dihydrogen phosphate, 90 parts of bone meal, sodium matter are swollen
5 parts, 5 parts of plant ash of profit soil.
Its application method includes: to apply the complex repairation medicament of above-mentioned formula ratio in the heavy-metal contaminated soil, multiple
The 1.5wt% for repairing the usage amount of medicament as soil quality is closed, mixes it uniformly with soil by turning over, ploughed depth is
30cm, turning over number is 5 times, and water is added to make soil moisture content 35%, is conserved 60 days, and during maintenance plus water keeps ground moistening.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 1
pH。
It is calculated in the present embodiment, after test it is found that soil available Cd content reduction by 79.34%, Available Lead content
64.56% is reduced, free state content of beary metal is substantially reduced；And soil pH is 6.18, variation is little.
Embodiment 3:
A kind of heavy-metal contaminated soil complex repairation medicament and its application method are present embodiments provided, wherein to be repaired
Heavy-metal contaminated soil is same as Example 1.
The complex repairation medicament includes following components by weight: 80 parts of ammonium dihydrogen phosphate, 20 parts of bone meal, oxalic acid 40
Part, 3 parts of sodium bentonite, 3 parts of rice hull carbon.
Its application method includes: to apply the complex repairation medicament of above-mentioned formula ratio in the heavy-metal contaminated soil, multiple
The 0.58wt% for repairing the usage amount of medicament as soil quality is closed, mixes it uniformly with soil by turning over, ploughed depth is
20cm, turning over number is 4 times, and water is added to make soil moisture content 40%, is conserved 20 days, and during maintenance plus water keeps ground moistening.
After maintenance, using using Available Lead in the method testing soil in embodiment 1, the content of available Cd and
Soil pH.
It is calculated in the present embodiment, after test it is found that soil available Cd content reduces by 38.5%, Available Lead content drops
Low 45.2%, free state content of beary metal is substantially reduced；And soil pH is 7.85, variation is little.
Embodiment 4:
A kind of heavy-metal contaminated soil complex repairation medicament and its application method are present embodiments provided, wherein to be repaired
Heavy-metal contaminated soil is same as Example 2.
The complex repairation medicament includes following components by weight: 50 parts of calcium superphosphate, 50 parts of bone meal, ferrous sulfate
5 parts, 2 parts of sodium bentonite, 4 parts of bone black.
Its application method includes: to apply the complex repairation medicament of above-mentioned formula ratio in the heavy-metal contaminated soil, multiple
The 3wt% for repairing the usage amount of medicament as soil quality is closed, mixes it uniformly with soil by turning over, ploughed depth is
25cm, turning over number is 3 times, and water is added to make soil moisture content 25%, is conserved 15 days, and during maintenance plus water keeps ground moistening.
After maintenance, using using Available Lead in the method testing soil in embodiment 1, the content of available Cd and
Soil pH.
It is calculated in the present embodiment, after test it is found that soil available Cd content reduces by 50.6%, Available Lead content drops
Low 61.4%, free state content of beary metal is substantially reduced；And soil pH is 5.71, variation is little.
Embodiment 5:
A kind of heavy-metal contaminated soil complex repairation medicament and its application method are present embodiments provided, wherein to be repaired
Heavy-metal contaminated soil is same as Example 1.
The complex repairation medicament includes following components by weight: 30 parts of potassium dihydrogen phosphate, 30 parts of ammonium dihydrogen phosphate,
30 parts of bone meal, 40 parts of ferrous sulfate, 20 parts of oxalic acid, 2.5 parts of sodium bentonite, 1.5 parts of turf.
Its application method includes: that the complex repairation medicament of above-mentioned formula ratio and fertilizer are applied the heavy metal pollution jointly
In soil, the usage amount of complex repairation medicament is the 4.5wt% of soil quality, mixes it uniformly with soil by turning over, turns over
Tilling depth degree is 18cm, and turning over number is 3 times, and water is added to make soil moisture content 20%, is conserved 10 days, and during maintenance plus water keeps soil
Earth is wet.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 1
pH。
It is calculated in the present embodiment, after test it is found that soil available Cd content reduces by 73.2%, Available Lead content drops
Low 75.8%, free state content of beary metal is substantially reduced；And soil pH is 7.23, variation is little.
Comparative example 1:
This comparative example provides a kind of heavy-metal contaminated soil complex repairation medicament and its application method, wherein to be repaired
Heavy-metal contaminated soil is same as Example 1.
Referring to embodiment 1, difference is only that the component and parts by weight of the complex repairation medicament: not including biphosphate
Potassium.
Its application method is referring again to embodiment 1.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 1
pH。
In this comparative example, the component of complex repairation medicament does not include inorganic phosphate, the phosphoric acid of major stableization effect
Radical content is insufficient, and discharges slower, causes that soil remediation speed is slow, effect is poor, in the same time, soil available Cd contains
Amount only reduces by 15%, and Available Lead content only reduces by 10%.
Comparative example 2:
This comparative example provides a kind of heavy-metal contaminated soil complex repairation medicament and its application method, wherein to be repaired
Heavy-metal contaminated soil is same as Example 1.
Referring to embodiment 1, difference is only that the component and parts by weight of the complex repairation medicament: not including bone meal.
Its application method is referring again to embodiment 1.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 1
pH。
In this comparative example, the component of complex repairation medicament does not include bone meal, although inorganic phosphate can still play in a short time
The effect of precipitation of heavy metals, but it is shorter to hold time after its reparation, reduces 35% compared with embodiment 1, the soil after reparation is still easy
It is polluted again, can not effectively improve soil.
Comparative example 3:
This comparative example provides a kind of heavy-metal contaminated soil complex repairation medicament and its application method, wherein to be repaired
Heavy-metal contaminated soil is same as Example 2.
The component and parts by weight of the complex repairation medicament are referring to embodiment 2, and difference is only that: 4 parts of potassium dihydrogen phosphate, bone
101 parts of powder.
Its application method is referring again to embodiment 2.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 2
pH。
In this comparative example, since the weight ratio of potassium dihydrogen phosphate and bone meal is relatively low, soil pH is significantly increased, phosphate radical
Plasma diffusing W,Mo is slow, and compared with Example 2, soil available Cd content only reduces by 38.2% at this time, and Available Lead content is only
Reduce by 32.1%.
Comparative example 4:
This comparative example provides a kind of heavy-metal contaminated soil complex repairation medicament and its application method, wherein to be repaired
Heavy-metal contaminated soil is same as Example 3.
Referring to embodiment 3, difference is only that the component and parts by weight of the complex repairation medicament: 101 parts of potassium dihydrogen phosphate,
4 parts of bone meal.
Its application method is referring again to embodiment 3.
After maintenance, using Available Lead, the content of available Cd and soil in the method testing soil in embodiment 3
pH。
In this comparative example, since the weight ratio of potassium dihydrogen phosphate and bone meal is higher, soil pH is remarkably decreased, soil acid
Change, compared with Example 3, soil available Cd content only reduces by 19.5% at this time, and Available Lead content only reduces by 22.4%.
Complex repairation medicament of the present invention be can be seen that with comparative example based on the above embodiments containing based on phosphorus component
It leads, by Phos and organic phosphorus synergistic effect, then cooperates the static stabilization of other components, to heavy-metal composite pollution soil
Earth has preferable repairing effect, and soil available Cd content can reduce by 35~80%, and Available Lead content can reduce by 40~
80%；For different types of contaminated soil, according to soil pH and content of beary metal regulating agent dosage and component proportion, extension
The application range of complex repairation medicament；The complex repairation reagent cost is lower, environmentally protective, easy to use, to soil
Matter influences smaller.
Applicant's statement, the present invention illustrate detailed product and application method of the invention, but this hair by examples detailed above
It is bright to be not limited to the said goods and application method, that is, do not mean that the present invention must rely on the said goods and method could be real
It applies.It should be clear to those skilled in the art, any improvement in the present invention, to the equivalence replacement of each component of the present invention
And the change of each component ratio, the addition of auxiliary element and selection of concrete mode etc., all fall within protection scope of the present invention
Within the open scope.
Claims (10)
1. a kind of heavy-metal contaminated soil complex repairation medicament, which is characterized in that the complex repairation medicament wraps by weight
Include following components:
2. complex repairation medicament according to claim 1, which is characterized in that the complex repairation medicament further includes that pH is adjusted
Agent, the parts by weight of the pH adjusting agent are 0~100 part；
Preferably, the pH adjusting agent includes ferrous sulfate and/or oxalic acid.
3. complex repairation medicament according to claim 2, which is characterized in that the complex repairation medicament wraps by weight
Include following components:
4. complex repairation medicament according to claim 1-3, which is characterized in that the inorganic phosphate is inorganic
Soluble phosphate；
Preferably, the inorganic phosphate includes any one in potassium dihydrogen phosphate, ammonium dihydrogen phosphate or calcium superphosphate or at least
Two kinds of combination；
Preferably, the bone meal is organic phosphatic fertiliser, and phosphorus content is 10~15wt%；
Preferably, the bentonite includes sodium bentonite；
Preferably, the bentonitic partial size is 1000~1500 mesh；
Preferably, the type of the charcoal includes any one in turf, bone black, rice hull carbon or plant ash or at least two
Combination.
5. complex repairation medicament according to claim 4, which is characterized in that the complex repairation medicament wraps by weight
Include following components:
6. the application method of complex repairation medicament according to claim 1-5, which is characterized in that the user
Method includes: to apply the complex repairation medicament of formula ratio in heavy-metal contaminated soil, mixes it uniformly with soil, keeps soil
Water content is conserved.
7. application method according to claim 6, which is characterized in that the heavy metal in the heavy-metal contaminated soil includes
Cadmium and/or lead；
Preferably, the usage amount of the complex repairation medicament is 0.5~5wt% of soil quality.
8. application method according to claim 6 or 7, which is characterized in that the mixing of the complex repairation medicament and soil
Mode is to turn over；
Preferably, the ploughed depth is 15~30cm；
Preferably, the number of turning over is 2~5 times；
Preferably, during the complex repairation medicament and fertilizer are manured into soil jointly；
Preferably, the soil moisture content reaches 20~40%；
Preferably, the time that the soil is conserved is 7~60 days.
9. according to the described in any item application methods of claim 6-8, which is characterized in that the application method includes: that will be formulated
The complex repairation medicament and fertilizer of amount apply in heavy-metal contaminated soil jointly, and the usage amount of complex repairation medicament is soil quality
0.5~5wt%, mix it uniformly with soil by turning over, ploughed depth be 15~30cm, turn over number be 2~5 times,
It keeps soil moisture content to reach 20~40%, conserves 7~60 days.
10. the purposes of complex repairation medicament according to claim 1-5, which is characterized in that the complex repairation
Medicament is used for the reparation of heavy-metal contaminated soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667721.0A CN110252798A (en) | 2019-07-23 | 2019-07-23 | A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667721.0A CN110252798A (en) | 2019-07-23 | 2019-07-23 | A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110252798A true CN110252798A (en) | 2019-09-20 |
Family
ID=67927899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910667721.0A Pending CN110252798A (en) | 2019-07-23 | 2019-07-23 | A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110252798A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110871213A (en) * | 2019-11-19 | 2020-03-10 | 北京高能时代环境技术股份有限公司 | Lead-polluted soil stabilization/solidification remediation method |
| CN111085537A (en) * | 2019-12-07 | 2020-05-01 | 重庆市固体废物管理服务中心有限公司 | Method for restoring heavy metal contaminated soil by using organic phosphorus and inorganic phosphorus materials |
| CN112125749A (en) * | 2020-09-02 | 2020-12-25 | 广东佳德环保科技有限公司 | Composite repairing agent for heavy metal contaminated soil and application method thereof |
| CN113732040A (en) * | 2020-05-29 | 2021-12-03 | 伟爱国际有限公司 | Method for restoring acidic or sodium alkaline soil in polluted site |
| CN114011869A (en) * | 2021-10-18 | 2022-02-08 | 深圳上达生态环境科技有限公司 | Heavy metal contaminated soil remediation method and soil excavation device |
| US11623257B2 (en) | 2020-05-29 | 2023-04-11 | Vrm International Pty Ltd | Method for large scale biological hydrosynthesis, energy generation and storage, and/or topsoil restoration |
| US11865596B2 (en) | 2020-05-29 | 2024-01-09 | VRM International Pty Ltd. | Method for restoring acidic or sodic alkali soils in a contaminated site |
| US11968938B2 (en) | 2020-05-29 | 2024-04-30 | Vrm International Pty Ltd | Method and system for intensive biological hydrosynthesis, energy generation and storage, and/or topsoil restoration |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018130A1 (en) * | 2002-07-23 | 2004-01-29 | Forrester Keith Edward | Method for wet stabilization of material or waste to reduce selenium leaching potential |
| CN102921142A (en) * | 2012-11-06 | 2013-02-13 | 莱沃睿智绿色科技（北京）有限公司 | Heavy metal pollutant immobilized reagent composition and immobilization treatment method |
| CN104384178A (en) * | 2014-09-28 | 2015-03-04 | 同济大学 | In-situ immobilizing method for heavy metal pollutants in electronic waste pollution site |
| 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 |
| CN107892917A (en) * | 2017-10-30 | 2018-04-10 | 湖南新九方科技有限公司 | A kind of heavy metal pollution arable soil conditioner, preparation and its application |
| CN107936982A (en) * | 2017-11-23 | 2018-04-20 | 河南宗源环保科技有限公司 | A kind of heavy-metal contaminated soil renovation agent |
| CN108865167A (en) * | 2018-08-24 | 2018-11-23 | 广州市环境保护工程设计院有限公司 | A kind of soil-repairing agent and preparation method thereof |
| CN109513740A (en) * | 2018-11-26 | 2019-03-26 | 北京南科大蓝色科技有限公司 | One kind is for alkaline heavy metal contaminated soil renovation agent and its application method and application |
| CN109517600A (en) * | 2018-11-26 | 2019-03-26 | 北京南科大蓝色科技有限公司 | It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application |
| CN109894469A (en) * | 2019-04-10 | 2019-06-18 | 河南工学院 | Medicament and restorative procedure are repaired for the efficient stableization of heavy-metal contaminated soil |
-
2019
- 2019-07-23 CN CN201910667721.0A patent/CN110252798A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018130A1 (en) * | 2002-07-23 | 2004-01-29 | Forrester Keith Edward | Method for wet stabilization of material or waste to reduce selenium leaching potential |
| CN102921142A (en) * | 2012-11-06 | 2013-02-13 | 莱沃睿智绿色科技（北京）有限公司 | Heavy metal pollutant immobilized reagent composition and immobilization treatment method |
| CN104384178A (en) * | 2014-09-28 | 2015-03-04 | 同济大学 | In-situ immobilizing method for heavy metal pollutants in electronic waste pollution site |
| 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 |
| CN107892917A (en) * | 2017-10-30 | 2018-04-10 | 湖南新九方科技有限公司 | A kind of heavy metal pollution arable soil conditioner, preparation and its application |
| CN107936982A (en) * | 2017-11-23 | 2018-04-20 | 河南宗源环保科技有限公司 | A kind of heavy-metal contaminated soil renovation agent |
| CN108865167A (en) * | 2018-08-24 | 2018-11-23 | 广州市环境保护工程设计院有限公司 | A kind of soil-repairing agent and preparation method thereof |
| CN109513740A (en) * | 2018-11-26 | 2019-03-26 | 北京南科大蓝色科技有限公司 | One kind is for alkaline heavy metal contaminated soil renovation agent and its application method and application |
| CN109517600A (en) * | 2018-11-26 | 2019-03-26 | 北京南科大蓝色科技有限公司 | It is a kind of for the soil-repairing agent and its application method of heavy metal pollution and application |
| CN109894469A (en) * | 2019-04-10 | 2019-06-18 | 河南工学院 | Medicament and restorative procedure are repaired for the efficient stableization of heavy-metal contaminated soil |
Non-Patent Citations (2)
| Title |
|---|
| 周世伟等: "磷酸盐修复重金属污染土壤的研究进展", 《生态学报》 * |
| 龙梅 等: "低成本含磷材料修复环境重金属污染的研究进展", 《环境污染治理技术与设备》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110871213A (en) * | 2019-11-19 | 2020-03-10 | 北京高能时代环境技术股份有限公司 | Lead-polluted soil stabilization/solidification remediation method |
| CN110871213B (en) * | 2019-11-19 | 2022-04-19 | 北京高能时代环境技术股份有限公司 | Lead-polluted soil stabilization/solidification remediation method |
| CN111085537A (en) * | 2019-12-07 | 2020-05-01 | 重庆市固体废物管理服务中心有限公司 | Method for restoring heavy metal contaminated soil by using organic phosphorus and inorganic phosphorus materials |
| CN113732040A (en) * | 2020-05-29 | 2021-12-03 | 伟爱国际有限公司 | Method for restoring acidic or sodium alkaline soil in polluted site |
| US11623257B2 (en) | 2020-05-29 | 2023-04-11 | Vrm International Pty Ltd | Method for large scale biological hydrosynthesis, energy generation and storage, and/or topsoil restoration |
| US11865596B2 (en) | 2020-05-29 | 2024-01-09 | VRM International Pty Ltd. | Method for restoring acidic or sodic alkali soils in a contaminated site |
| US11968938B2 (en) | 2020-05-29 | 2024-04-30 | Vrm International Pty Ltd | Method and system for intensive biological hydrosynthesis, energy generation and storage, and/or topsoil restoration |
| CN112125749A (en) * | 2020-09-02 | 2020-12-25 | 广东佳德环保科技有限公司 | Composite repairing agent for heavy metal contaminated soil and application method thereof |
| CN114011869A (en) * | 2021-10-18 | 2022-02-08 | 深圳上达生态环境科技有限公司 | Heavy metal contaminated soil remediation method and soil excavation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110252798A (en) | A kind of heavy-metal contaminated soil complex repairation medicament and its application method and purposes | |
| Mandal et al. | Beneficial effects of blue-green algae and Azolla, excluding supplying nitrogen, on wetland rice fields: a review | |
| Amadi et al. | Remediation of oil polluted soils: 1. Effect of organic and inorganic nutrient supplements on the performance of maize (Zea may L) | |
| CN104971938B (en) | Iron based-humus composite material and application thereof in soil heavy metal pollution control | |
| CN104592998B (en) | Acidified soil charcoal based modifier and preparation method and application | |
| CN107400512B (en) | A kind of phytoremediation activator and the plant restoration method for heavy-metal composite pollution soil | |
| CN109504398A (en) | A kind of humic acid nano zero valence iron soil Cr pollution amelioration agent and preparation method | |
| CN107350281A (en) | One kind is applied to northern farmland soil of sewage irrigation area passivator and its application process | |
| CN108559521B (en) | Soil passivator for reducing soil biological available cadmium and preparation method and use method thereof | |
| CN104327858A (en) | Soil heavy metal compound stabilizer and method using soil heavy metal compound stabilizer for passivation of soil heavy metals | |
| CN105367346A (en) | Slow-release fertilizer for soil improvement and preparation method and application thereof | |
| CN109294599A (en) | A kind of passivator for restoration of soil polluted by heavy metal | |
| CN108658708A (en) | A kind of fertilizing method and application for farmland cadmium pollution prevention | |
| CN106566557A (en) | Soil conditioner for reducing activity of heavy metals in soil, preparation method thereof, and method for reducing content of heavy metals in rice | |
| CN113348804A (en) | Method for passivation treatment of heavy metal pollution of farmland and reconstruction of soil nutrient health | |
| CN108405594A (en) | A kind of acidic cadmium polluted soil Opsonizing method inhibiting cadmium accumulation for paddy rice | |
| CN106397032A (en) | Special fertilizer for saline land peanut | |
| CN106675563A (en) | Heavy metal contaminated soil restoration agent as well as preparation method and application thereof | |
| CN105750323A (en) | Farmland chromium pollution remediation method under planting production condition | |
| CN114029333A (en) | Novel method for repairing soil polluted by heavy metals of cadmium, lead, mercury and chromium | |
| CN109704860A (en) | A kind of conditioner and preparation method thereof for improveing acid continuous cropping obstacle soil | |
| Guimarães et al. | Value of copper, zinc, and oxidized charcoal for increasing forage efficiency of urea N uptake | |
| CN109588218A (en) | For reducing the implantation methods of crops mercury content | |
| CN108929694A (en) | It is a kind of for administering the soil conditioner and preparation method thereof in light moderate cadmium pollution acidity farmland | |
| CN108219794A (en) | One kind repairs medicament and application method for Wheat in Northern growing area farmland cadmium pollution soil |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191223 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Taoyuan Xueyuan Road 1088 Street Applicant after: Shenzhen Nanke big asset management Ltd. Address before: 100083 Beijing city Haidian District Wangzhuang Road No. 1, Tsinghua Tongfang technology building D, East Building 28 storey Applicant before: BEIJING NANKE DALANSE TECHNOLOGY CO.,LTD. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |
|
| RJ01 | Rejection of invention patent application after publication |