CN106978190A - A kind of stabilisation for chromium-polluted soil repairs medicament and its method applied to soil remediation - Google Patents
A kind of stabilisation for chromium-polluted soil repairs medicament and its method applied to soil remediation Download PDFInfo
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- CN106978190A CN106978190A CN201710400553.XA CN201710400553A CN106978190A CN 106978190 A CN106978190 A CN 106978190A CN 201710400553 A CN201710400553 A CN 201710400553A CN 106978190 A CN106978190 A CN 106978190A
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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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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention provides a kind of stabilisation reparation medicament for chromium-polluted soil and its method applied to soil remediation.The present invention stabilizes reparation medicament and used by will be enriched in sludge, nutriment and the chemical reducing agent synthesis of active microorganism, and chromium-polluted soil is effectively repaired using the comprehensive function of physics, chemistry and microorganism.Meanwhile, the present invention, which is stabilized, repairs original position and showering that medicament can be applied to chromium-polluted soil.
Description
Technical field
The present invention relates to contaminated soil remediation field, repaiied in particular to a kind of stabilisation for chromium-polluted soil
Multiple medicament and its method applied to soil remediation.
Background technology
First chromium salt production line was built up from 1958 so far, China successively had 70 Yu Jia chromic salts enterprises, when most
52 enterprises are had while being produced.Cut-off 2015, has closed down 48, and 15 are still producing, and close down enterprise leaves field
Ground, then be the main source in China's pollution of chromium place.In natural environment, chromium is generally with stable two kinds of valence states of trivalent and sexavalence
In the presence of also having extremely unstable intermediate state tetravalence once in a while or pentavalent chromium occur.Cr VI is generally with CrO in soil4 2-With
Cr2O7 2-Form is present, because Cr VI has higher activity, so it is difficult to adsorbed by soil colloid, can also be to bio
Raw stronger toxic action.Trivalent chromium is main with Cr (H20)6 3+With Cr (HO)2 +Exist etc. form, activity is relatively low, easily by soil
Colloid adsorbs and forms precipitation, and the toxicity to biology is relatively small.Meanwhile, Cr VI is soluble in water in the environment, transfer ability
By force, its toxicity is more than 100 times of trivalent chromium.
The method that pollution of chromium is administered mainly has two kinds：One is to change chromium in soil by reduction, precipitation and complexing
Existing forms, reduce its toxicity and bioavailability in soil environment；Two be to separate chromium from soil.It is existing
Technology of repairing chromium contaminated soil is broadly divided into five classes：Chemical immobilization/stabilisation, chemical reduction method, chemical cleaning method, electronic repair
Multiple method and biological restoration.Wherein, chemosetting/stabilisation is one of common methods of restoration of soil polluted by heavy metal, its energy
Biological effectiveness and transportable property of the heavy metal in soil environment are reduced, so that toxicity of the heavy metal to animals and plants is reduced, and
The technology also has the advantages that low rehabilitation cost, short time limit, using convenient in actual applications.
In recent years, examined with the development of Heavy Metal Pollution Control technology and for remediation contaminated soil resultant effect
Consider, single recovery technique innovationization, combined remediation technology diversification increasingly become study hotspot, while environmentally friendly repair
The application of material and the scale suited measures to local conditions also turns into focus.Microorganism is in terms of contaminated by heavy metals soil is repaired
With unique effect, and microbial treatment heavy metal pollution is used to be mainly two kinds of effects by microorganism：One is to pass through
Absorption, the metabolism of microorganism reach heavy metal abatement, catharsis and fixation；Two be to change heavy metal by microorganism
Chemical form, make heavy metal fix or bioavailability reduction, reduce heavy metal harm.
For traditional method, the advantage using the technology of microorganism remediation principle is not destroy soil ring
Border, will not produce secondary pollution, can original place processing, simple to operate, rehabilitation expense is more low.However, microorganism remediation technology
There is certain defect, first, when primary pollutant concentration is too high or too low, microorganism remediation effect can be reduced；Secondly, it is biological
Reparation is influenceed larger by objective condition such as environment, and compared with other method, the time of this technology governance contaminated soil is relatively
It is long；Again, specific microorganism can only degrade particular chemicals, once the state of compound is changed, it is possible to and will not
Degraded again by same Institute of Micro-biology；Finally, the systemic pollutant of microbial body may be because of its metabolism or death etc.
Reason is discharged into environment again, it is impossible to play due repairing effect.
Likewise, single utilization microbial reagent repairs the soil of pollution of chromium actually there is also certain limitation, its
Reason essentially consists in the following aspects：
1st, because pollutant concentration is too low in some soil to be repaired, thus when being not enough to maintain the group of bacterium for degrading,
And then remaining pollutant can be caused to stay in soil；
2nd, domestication and growth of the microorganism in chromium-polluted soil needs the regular hour；
3rd, microbial activity is influenceed by environmental conditions such as temperature, moisture, oxygen, pH；
4th, microorganism has certain growth cycle, if nutrient supply is not enough, and the metabolism or death of microorganism are likely to
The Cr VI being reduced is caused to discharge again；
5th, when pollutant concentration is too high, because soil toxicity is too high, microorganism can not survive and grow, so as to can not reach
To repairing effect.
Therefore, exploitation is a kind of can be applied to different pollution of chromium environment and the efficient soil remediation medicine of DIFFERENT Cr pollution level
Agent, has become technical problem urgently to be resolved hurrily at present.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is that providing a kind of stabilisation for chromium-polluted soil repairs medicament, and the present invention is repaired
In medicament, used by sludge, nutriment and the chemical reducing agent synthesis that will be enriched in active microorganism, so as to utilize thing
The comprehensive function of reason, chemistry and microorganism is effectively repaired to chromium-polluted soil, and it is existing to solve single microorganism reparation
Weak point.
Second object of the present invention is that providing the present invention stabilizes reparation medicament in the original position of soil and showering
In application.
Third object of the present invention is to provide in a kind of method of soil remediation, methods described dirty using chromium of the present invention
The stabilisation for contaminating soil repairs medicament.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of stabilisation for chromium-polluted soil repairs medicament, and it is main by following components system that the stabilisation repairs medicament
Into：
Iron powder, wheat bran, organic fertilizer, sludge and ferrous salt.
Optionally, in the present invention, in parts by weight, each component consumption stabilized in reparation medicament is as follows：
0~2 part of iron powder, 4~9 parts of wheat bran, 3~8 parts of organic fertilizer, 2~7 parts of sludge, and 0~3 part of ferrous salt.
Optionally, in the present invention, in parts by weight, it is as follows that the stabilisation repairs each component consumption in medicament：
1~2 part of iron powder, 5~8 parts of wheat bran, 4~8 parts of organic fertilizer, 3~6 parts of sludge, and 1~3 part of ferrous salt.
Optionally, in the present invention, in parts by weight, it is as follows that the stabilisation repairs each component consumption in medicament：
1 part of iron powder, 6 parts of wheat bran, 5 parts of organic fertilizer, 4 parts of sludge, and 2 parts of ferrous salt.
Optionally, in the present invention, the sludge is activated sludge；It is preferred that, the sludge is that municipal sewage plant activity is dirty
Mud.
Optionally, in the present invention, in parts by weight, described stabilize is repaired in medicament, and the ferrous salt is sulphur
The mixture of one or both of sour ferrous, ferrous nitrate；It is preferred that, the ferrous salt is ferrous sulfate.
Optionally, in the present invention, the particle diameter of wheat bran is less than or equal to 2mm；And/or, the particle diameter of organic fertilizer is less than or equal to 1mm.
Likewise, present invention provides the application for stabilizing and repairing medicament in soil heterotopic reparation.
Further, present invention also offers a kind of method of soil remediation, using of the present invention in methods described
Stabilize and repair medicament.
Optionally, in the present invention, the method for the soil remediation comprises the following steps：The present invention is added into contaminated soil
Stabilize and repair medicament, add water and stir, then stack, and sealed maintenance.
Compared with prior art, beneficial effects of the present invention are：
Present invention reparation medicament is a kind of by the biological prosthetic comprehensive stabilisation reparation medicament being combined with chemical remediation.
At the initial stage of soil remediation, the present invention, which repairs contained chemical constituent in medicament, can reduce part high valence chrome rapidly, reduce soil
Toxicity；Meanwhile, the addition of organic fertilizer and wheat bran can also improve the fertility of soil, effectively recover function of soil ecosystem；Enter
One step, can also there be contained complexity microorganism system using carbon in soil source and the organic fertilizer added etc. in activated sludge
Machine composition realizes the reduction and absorption for heavy metal chromium.Meanwhile, the bright stabilisation for chromium-polluted soil of this law repairs medicament
Effective reparation can not only be realized for the contaminated soil of high chrome contents, also had well simultaneously for the soil of low chromium content
Repairing effect.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or the unreceipted production firm person of instrument, be
The conventional products that can be obtained by commercially available purchase.
Lead in the current single creature system of technical problem in the presence of being repaired in view of to(for) chromium-polluted soil, the present invention
Cross using efficient reduction bacterial strain, addition nutriment, and repairing for chromium-polluted soil is carried out using biological-chemical combined system
It is multiple；
It is made up specifically, the present invention repairs medicament for the stabilisation of chromium-polluted soil of following raw material：Iron powder, wheat bran,
Organic fertilizer, sludge and ferrous salt；
Wherein, hexavalent chrome reduction, as chemical remediation medicament, can be trivalent chromium, especially in soil by iron powder and ferrous salt
Cr VI in the initial stage of earth processing, soil is higher, and the presence of chemical reducing agent can be reduced part Cr VI, so that
The toxicity of chromium is effectively remained in reduction soil, this has weight for the activity of activated bacterial in bacterium colony in soil protection and sludge
The meaning wanted；
It is further preferred that the ferrous salt is ferric sulfate or ferric nitrate, it is furthermore preferred that the ferrous salt is ferric sulfate；
Wherein, the particle diameter of iron powder is less than or equal to 1mm；
Wherein, wheat bran and organic fertilizer both can as pending soil protophyte fertilizer, so as to improve soil ecology
Environment and the growth for promoting plant, and further the chromium in soil is converted and handled using plant, so that this hair
Bright soil treatment reagent in actual use, can carry out integrated treatment by the effect of physical-chemical-microorganism；Together
When, wheat bran and organic fertilizer can be used as the carbon source of activated bacterial during soil remediation, promote effective breeding of microorganism with
And further absorption and conversion of chromium etc. are handled；
Used it is further preferred that wheat bran and organic fertilizer are all re-used as raw material after being pulverized；It is furthermore preferred that wheat bran
Particle diameter is less than or equal to 2mm, and/or the brown graininess of organic fertilizer, and particle diameter is less than or equal to 1mm；
Wherein, the sludge is preferably in the activated sludge from municipal sewage plant, activated sludge and not only contained greatly
The micropopulation of amount, while also including organic substance and inorganic substances that they are depended on；Because activated sludge is anaerobism
Sludge, so in micro-reduction process (soil treatment), to keep sludge to be under anaerobic state as far as possible, so as to ensure micro-
Biological existence and growth.
In a currently preferred scheme, in parts by weight, the present invention is used for the stabilisation of chromium-polluted soil
Repair each component consumption in medicament as follows：0~2 part of iron powder, for example can be, but be not limited to 0,1, or 2 parts；Wheat bran 4~9
Part, for example can be, but be not limited to 4,5,6,7,8, or 9 parts；3~8 parts of organic fertilizer, for example can be, but be not limited to 3,4,
5th, 6,7, or 8 parts；2~7 parts of sludge, for example can be, but be not limited to 2,3,4,5,6, or 7 parts；And ferrous salt 0~3
Part, for example can be, but be not limited to 0,1,2, or 3 parts；
Wherein, when soil pollution concentration is relatively low, especially for the relatively low agricultural land soil of chromium concn, can suitably it reduce
On the one hand the consumption of iron powder and ferric sulfate, can so reduce the cost used for stabilizing and repairing medicament, while reducing chemical drugs
The use of agent also preferably can avoid and prevent medicament for the secondary pollution of soil；On the other hand, in the dirt of low chromium concn
Contaminate in soil, the active bacteria in sludge can largely survive, and this is also enough further by reduction, absorption etc. to make
With being reduced for the chromium in soil and adsorption treatment；
Thus, further, can be with wheat bran, organic fertilizer, sludge and ferrous salt in the contaminated soil of low chromium content
The raw material for repairing medicament is stabilized as the present invention；Or repaired with iron powder, wheat bran, organic fertilizer, and sludge as stabilisation
The raw material of medicament；Even directly directly repair medicament using wheat bran, organic fertilizer and sludge as stabilisation without using chemical composition
Raw material components.
The present invention stabilize repair medicament can as soil original position or showering medicament use, its application method compared with
Also more simple in conventional dose, specifically used method (that is, to the method for contaminated soil remediation) refers to as follows：
According to soil contamination grade, add a certain proportion of stabilize and repair medicament, then add water and stir；Due to micro-
Biological growth needs moisture, so soil is during reparation, soil moisture content will typically be maintained at 35%-55%, and larger
The moisture of amount can also keep the anaerobic environment of soil；Adding the soil of medicament can directly be stacked, and wait biology to be given birth to
Long reduction.
For the soil of different pollution concentrations, reaching the time of repairing effect has difference, in general, chromium content in soil
Higher, repair time is more long.
Further, the present invention, which stabilizes reparation medicament, certain shelf-life, typically after 2 months, micro- in medicament
Biology can largely consume carbon source therein, and chemical agent therein can be also oxidized, and remediation efficiency is used so as to reduce.
Embodiment 1
Content of 6-valence Cr ions is 545mg/kg in a certain contaminated soil in Yunnan, is utilized《Body waste Leaching leaching method sulphur
Acid+nitric acid method》Leaching way is leached, and hexavalent chromium concentration is 26mg/L in infusion solution, and total chromium concn is 30mg/L.
Soil remediation method：Added in soil 3% weight than the present invention stabilize and repair medicament, each raw material in medicament
Consumption is as follows:1 part of iron powder, 6 parts of wheat bran, 5 parts of organic fertilizer, 4 parts of sludge, and 2 parts of ferrous salt；Add water so that soil moisture content reaches
To 40%, sealed maintenance；
After 7 days, content of 6-valence Cr ions is 16mg/kg in soil, is utilized《Body waste Leaching leaching method sulfonitric
Method》Leaching way is leached, and hexavalent chromium concentration is ＜ 0.004mg/L in infusion solution, and total chromium concn is 0.3mg/L；
After maintenance 14 days, content of 6-valence Cr ions is 8mg/kg in soil, and hexavalent chromium concentration is ＜ 0.004mg/ in infusion solution
L, total chromium concn is 0.1mg/L, reaches repairing effect.
Embodiment 2
Content of 6-valence Cr ions is 1600mg/kg in a certain contaminated soil in Henan, is utilized《Body waste Leaching leaching method sulphur
Acid+nitric acid method》Leaching way is leached, and hexavalent chromium concentration is 126mg/L in infusion solution, and total chromium concn is 154mg/L.
Soil remediation method：Added in soil 3% weight than the present invention stabilize and repair medicament, each raw material in medicament
Consumption is as follows:1 part of iron powder, 6 parts of wheat bran, 5 parts of organic fertilizer, 4 parts of sludge, and 2 parts of ferrous salt；Add water so that soil moisture content reaches
To 40%, sealed maintenance；
After 7 days, content of 6-valence Cr ions is 553mg/kg in soil, is utilized《Body waste Leaching leaching method sulfonitric
Method》Leaching way is leached, and hexavalent chromium concentration is 46mg/L in infusion solution, and total chromium concn is 50mg/L；
After maintenance 30 days, content of 6-valence Cr ions is 128mg/kg in soil, and hexavalent chromium concentration is 2.8mg/L in infusion solution,
Total chromium concn is 4.8mg/L；
After maintenance 60 days, content of 6-valence Cr ions is 25mg/kg in soil, and hexavalent chromium concentration is ＜ 0.004mg/ in infusion solution
L, total chromium concn is 0.05mg/L, reaches repairing effect.
Embodiment 3
Content of 6-valence Cr ions is 5909mg/kg in a certain industrial pollution soil, is utilized《Body waste Leaching leaching method sulphur
Acid+nitric acid method》Leaching way is leached, and hexavalent chromium concentration is 287mg/L in infusion solution, and total chromium concn is 296mg/L.
Soil remediation method：Added in soil 5% weight than the present invention stabilize and repair medicament, each raw material in medicament
Consumption is as follows:1 part of iron powder, 6 parts of wheat bran, 5 parts of organic fertilizer, 4 parts of sludge, and 2 parts of ferrous salt；Add water so that soil moisture content reaches
To 40%, sealed maintenance；
After 14 days, content of 6-valence Cr ions is 2750mg/kg in soil, is utilized《Body waste Leaching leaching method sulfuric acid nitre
Acid system》Leaching way is leached, and hexavalent chromium concentration is 29mg/L in infusion solution, and total chromium concn is 30mg/L；
After maintenance 42 days, content of 6-valence Cr ions is 178mg/kg in soil, and hexavalent chromium concentration is 14mg/L in infusion solution, always
Chromium concn is 18mg/L；
After maintenance 90 days, content of 6-valence Cr ions is 16mg/kg in soil, and hexavalent chromium concentration is 0.9mg/L in infusion solution, always
Chromium concn is 1mg/L, reaches repairing effect.
The example that medicament is repaired to the soil of pollution of chromium is repaired by being performed as described above in a 1-3 to stabilize using the present invention
It can be seen that, medicament of the present invention has good repair ability for the soil of various concentrations pollution of chromium, and can realize excellent
Soil remediation effect.
Comparative example 1
Content of 6-valence Cr ions is 545mg/kg in the adjacent domain of the Yunnan somewhere contaminated soil of embodiment 1, soil, is utilized《Body
Waste Leaching leaching method sulfonitric method》Leaching way is leached, and hexavalent chromium concentration is 26mg/L, total chromium in infusion solution
Concentration is 30mg/L.
Soil remediation method：Added in soil 3% weight than soil remediation medicament, each raw material dosage is such as in medicament
Under:1 part of iron powder, 6 parts of wheat bran, 2 parts of ferrous salt；Add water so that soil moisture content reaches 40%, sealed maintenance；
After 7 days, content of 6-valence Cr ions is 295mg/kg in soil, is utilized《Body waste Leaching leaching method sulfonitric
Method》Leaching way is leached, hexavalent chromium concentration 18mg/L in infusion solution, and total chromium concn is 23mg/L；
After maintenance 14 days, content of 6-valence Cr ions is 227mg/kg in soil, and hexavalent chromium concentration is 10mg/L in infusion solution, always
Chromium concn is 13mg/L, and repairing effect is poor.
Comparative example 2
It is 1600mg/kg that the Henan of embodiment 2, which contaminates content of 6-valence Cr ions in the adjacent area of soil, soil, is utilized《Body waste
Leaching leaching method sulfonitric method》Leaching way is leached, and hexavalent chromium concentration is 126mg/L in infusion solution, and total chromium is dense
Spend for 154mg/L.
Soil remediation method：Added in soil 3% weight than soil remediation medicament, each raw material dosage is such as in medicament
Under:1 part of sludge, and 1 part of ferrous salt；Add water so that soil moisture content reaches 40%, sealed maintenance；
After 7 days, content of 6-valence Cr ions is 699mg/kg in soil, is utilized《Body waste Leaching leaching method sulfonitric
Method》Leaching way is leached, and hexavalent chromium concentration is 76mg/L in infusion solution, and total chromium concn is 89mg/L；
After maintenance 30 days, content of 6-valence Cr ions is 398mg/kg in soil, and hexavalent chromium concentration is 39mg/L in infusion solution, always
Chromium concn is 47mg/L；
After maintenance 60 days, content of 6-valence Cr ions is 188mg/kg in soil, and hexavalent chromium concentration is 27mg/L in infusion solution, always
Chromium concn is 36mg/L, and repairing effect is poor.
Comparative example 3
Content of 6-valence Cr ions is 5909mg/kg in the adjacent area of a certain industrial pollution soil of embodiment 3, soil, is utilized《Body
Waste Leaching leaching method sulfonitric method》Leaching way is leached, and hexavalent chromium concentration is 287mg/L in infusion solution, always
Chromium concn is 296mg/L.
Soil remediation method：Added in soil 5% weight than soil remediation medicament, each raw material dosage is such as in medicament
Under:3 parts of wheat bran, 1 part of ferrous salt；Add water so that soil moisture content reaches 40%, sealed maintenance；
After 14 days, content of 6-valence Cr ions is 4255mg/kg in soil, is utilized《Body waste Leaching leaching method sulfuric acid nitre
Acid system》Leaching way is leached, and hexavalent chromium concentration is 199mg/L in infusion solution, and total chromium concn is 223mg/L；
After maintenance 42 days, content of 6-valence Cr ions is 3699mg/kg in soil, and hexavalent chromium concentration is 127mg/L in infusion solution,
Total chromium concn is 164mg/L；
After maintenance 90 days, content of 6-valence Cr ions is 2943mg/kg in soil, and hexavalent chromium concentration is 99mg/L in infusion solution,
Total chromium concn is 113mg/L, and repairing effect is poor.
In the present invention, by the way that biological-chemical soil remediation component is combined, so that medicament of the present invention has well
Comprehensive repairing effect, and suitable for chromium-polluted soil original position and showering.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
Many other changes and modification can be made in the case of spirit and scope.It is, therefore, intended that wrapping in the following claims
Include all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. a kind of stabilisation for chromium-polluted soil repairs medicament, it is characterised in that the stabilisation repair medicament it is main by
Following components is made：
Iron powder, wheat bran, organic fertilizer, sludge and ferrous salt.
2. according to claim 1 stabilize repairs medicament, it is characterised in that in parts by weight, each component consumption
It is as follows：
0~2 part of iron powder, 4~9 parts of wheat bran, 3~8 parts of organic fertilizer, 2~7 parts of sludge, and 0~3 part of ferrous salt.
3. according to claim 2 stabilize repairs medicament, it is characterised in that in parts by weight, each component consumption
It is as follows：
1~2 part of iron powder, 5~8 parts of wheat bran, 4~8 parts of organic fertilizer, 3~6 parts of sludge, and 1~3 part of ferrous salt.
4. according to claim 3 stabilize repairs medicament, it is characterised in that in parts by weight, each component consumption
It is as follows：
1 part of iron powder, 6 parts of wheat bran, 5 parts of organic fertilizer, 4 parts of sludge, and 2 parts of ferrous salt.
5. according to claim 1 stabilize repairs medicament, it is characterised in that the sludge is activated sludge；
It is preferred that, the sludge is municipal sewage plant activated sludge.
6. according to claim 1 stabilize repairs medicament, it is characterised in that the ferrous salt is ferrous sulfate, nitric acid
The mixture of one or both of ferrous iron；
It is preferred that, the ferrous salt is ferrous sulfate.
7. according to claim 1 stabilize repairs medicament, it is characterised in that the particle diameter of wheat bran is less than or equal to 2mm；With/
Or, the particle diameter of organic fertilizer is less than or equal to 1mm.
8. the application for repairing medicament in soil remediation is stabilized any one of claim 1-7.
9. a kind of method of soil remediation, it is characterised in that usage right requires steady any one of 1-7 in methods described
Fixedization repairs medicament.
10. the method for soil remediation according to claim 9, it is characterised in that methods described comprises the following steps：To dirt
Contaminate the stabilisation added in soil any one of claim 1-7 and repair medicament, add water and stir, then stack, and
Sealed maintenance.
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| CN107486468A (en) * | 2017-08-15 | 2017-12-19 | 北京高能时代环境技术股份有限公司 | One kind is used for hexavalent chromium polluted soil heterotopic repairing method of microorganism |
| CN107541219A (en) * | 2017-09-08 | 2018-01-05 | 芜湖玖荣生物科技有限公司 | A kind of African Chrysanthemum soil conditioner and preparation method thereof |
| CN107779197A (en) * | 2017-08-31 | 2018-03-09 | 长葛市联发粮食专业合作社 | A kind of its method applied to soil remediation of preparation for repairing of heavy-metal contaminated soil |
| CN108405602A (en) * | 2018-05-28 | 2018-08-17 | 北京高能时代环境技术股份有限公司 | A kind of medicament composition and method for repairing chromium-polluted soil |
| CN108410472A (en) * | 2018-02-12 | 2018-08-17 | 环境保护部环境规划院 | A kind of composite drug and its application method for low concentrations of chromium contaminated soil remediation |
| CN109013697A (en) * | 2018-07-13 | 2018-12-18 | 北京高能时代环境技术股份有限公司 | A kind of long-acting restorative procedure of severe chromium-polluted soil |
| CN109954751A (en) * | 2017-12-25 | 2019-07-02 | 梅滨 | A kind of soil green ecological restorative procedure |
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| CN110423622A (en) * | 2019-08-08 | 2019-11-08 | 北京润鸣环境科技有限公司 | A kind of low sulfur type chromium-polluted soil renovation agent and preparation method thereof and application method |
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| CN108410472A (en) * | 2018-02-12 | 2018-08-17 | 环境保护部环境规划院 | A kind of composite drug and its application method for low concentrations of chromium contaminated soil remediation |
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| CN110305669B (en) * | 2018-03-20 | 2022-04-01 | 西南科技大学 | High-chromium polluted site repairing material |
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| CN110423622A (en) * | 2019-08-08 | 2019-11-08 | 北京润鸣环境科技有限公司 | A kind of low sulfur type chromium-polluted soil renovation agent and preparation method thereof and application method |
| CN112958606A (en) * | 2021-02-03 | 2021-06-15 | 中环国投(重庆)环保产业开发有限公司 | Remediation method for organic contaminated soil |
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