CN105885863A - Heavy metal contaminated soil repair agent based on medical stone and method for repairing heavy metal soil - Google Patents
Heavy metal contaminated soil repair agent based on medical stone and method for repairing heavy metal soil Download PDFInfo
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- CN105885863A CN105885863A CN201610307635.5A CN201610307635A CN105885863A CN 105885863 A CN105885863 A CN 105885863A CN 201610307635 A CN201610307635 A CN 201610307635A CN 105885863 A CN105885863 A CN 105885863A
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- soil
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- metal contaminated
- contaminated soil
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 68
- 239000002689 soil Substances 0.000 title claims abstract description 68
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000004575 stone Substances 0.000 title claims abstract description 13
- 230000008439 repair process Effects 0.000 title claims abstract description 12
- 229920001661 Chitosan Polymers 0.000 claims abstract description 17
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 15
- 235000002949 phytic acid Nutrition 0.000 claims abstract description 15
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229940068041 phytic acid Drugs 0.000 claims abstract description 12
- 239000000467 phytic acid Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000003999 initiator Substances 0.000 claims abstract description 8
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 3
- 238000009418 renovation Methods 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 18
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004021 humic acid Substances 0.000 claims description 16
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 5
- 241000209140 Triticum Species 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 235000012054 meals Nutrition 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 239000002801 charged material Substances 0.000 claims description 3
- 238000003971 tillage Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 8
- 229910052793 cadmium Inorganic materials 0.000 description 11
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003337 fertilizer Substances 0.000 description 8
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 240000007594 Oryza sativa Species 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003516 soil conditioner Substances 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000447 pesticide residue Substances 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 239000006041 probiotic Substances 0.000 description 2
- 235000018291 probiotics Nutrition 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- 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
-
- 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
- C09K2101/00—Agricultural use
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention provides a heavy metal contaminated soil repair agent and a method for repairing heavy metal soil. The repair agent comprises a modified medical stone, wherein the weight percent of the modified medical stone in the soil repair agent is 30 percent to 60 percent; the modified medical stone is prepared through the method comprising the following steps of after calcining the medical stone, adding initiator potassium persulfate and chitosan to stir and react, then adding phytic acid at the room temperature to stir and react, and finally grinding to obtain particles or powder. Compared with a traditional medical stone, according to the modified medical stone adopted by the invention, the removal efficiency of heavy metal especially bivalent heavy metal is remarkably improved to 90 percent or above. The soil repair method provided by the invention has good soil repair effect.
Description
Technical field
The present invention relates to a kind of have absorption and the soil remediation of fixing heavy metal ion particularly divalent metal
Agent and the restorative procedure of heavy metal soil.
Background technology
Soil pollution has become worldwide problem, and heavy metal pollution has become the " stealthy of agricultural products in China
Killer ".Along with the propelling of Chinese Urbanization's, chemical pollution becomes major source of pollutant.Benzene, phenol, phosphorus
The heavy metal pollutions such as type organic and cadmium, lead, hydrargyrum, arsenic are serious.Chemical fertilizer is excessively used and can cause soil
Earth is acidified, and then can induce the raising of soil heavy metal ion activity.Soil pH value often declines one
Unit, the activity of heavy metal cadmium will promote 100 times, increases the ill of the difficult and complicated illness such as Itai-itai diseases
Risk." the maximum feature of widespread pollution from the overuse of fertilizers and pesticides in rural area is hiding, chronicity and dispersibility, is that agricultural is raw
Produce links conscious or the most conscious generation during each, deal with cumbersome.According to just
Step statistics, national contaminated arable land there are about 10,000,000 hm2, organic pollution polluted agricultural land reaches 3600
Ten thousand hm2, the pesticide residues exceeding standard rate of main farm produce is up to 16%～20%；Sewage irrigation is polluted and is ploughed
216.7 ten thousand hm2, solid waste is stored up occupation of land and ruins field 13.3 ten thousand hm2.And in increasingly aggravating
Situation.Soil pollution can affect the decline of Crop yield and quality, and can be endangered by food chain
The health of the mankind, it is also possible to cause the further deterioration of air and quality of water environment.Therefore soil is dirty
The improvement of dye is the most very urgent.
CN102093899A discloses a kind of medical stone biological soil conditioner and preparation method thereof.This wheat
Meal stone biological soil conditioner includes with Maifanitum, humic acid, probiotics and makes mud accelerator swelling
Soil, after pulverizing respectively, is Maifanitum according to ratio of weight and number: humic acid: probiotics: swelling
The ratio of soil=60-70:20-25:1-2:10-20, sequentially pass through pulverizing, mixing, pelletize,
Dry, mixture prepares the useful of the Maifanitum containing 60-70%, the humic acid of 20%-25% and 1%-2%
The medical stone biological soil conditioner of bacterium.This soil conditioner can effective degrading pesticide residues, can drop
Low applying quantity of chemical fertilizer and make increasing crop yield.But, this soil conditioner is special for heavy metal ion
It not that divalent ion removing effect is poor.
CN102017835A discloses and a kind of reduces the heavy metal method of cumulative amount, the method in vegetable
For applying modifying agent in soil, this modifying agent is the mixing of Maifanitum and red mud, and Maifanitum applies
Amount is 7500kg.hm-2, the applied amount of red mud is 750kg.hm-2.In that patent, disclose multiple
Become the fall cadmium effect after subassembly, the fall cadmium after wherein combining in specific proportions with Maifanitum and red mud
Effect is best, and cadmium content can be made to reduce by 64.72%.But after this modifying agent is improved in the Herba Apii graveolentis of plantation
Cadmium content is still up to 2.8886mg.kg-1。
Summary of the invention
An object of the present invention is to provide the soil-repairing agent based on Maifanitum of a kind of improvement, to enter one
Step improves the removing heavy metals effect of existing soil-repairing agent based on Maifanitum.
The present invention also provides for the restorative procedure of a kind of heavy-metal contaminated soil simultaneously, its low cost, repairs effect
The best.
For achieving the above object, a kind of technical scheme that the present invention takes is as follows for the present invention:
A kind of heavy-metal contaminated soil renovation agent, it comprises modified Maifanitum, and this modification Maifanitum is at soil
Percentage by weight in renovation agent is 30%～60%, and modified Maifanitum is prepared via a method which to obtain:
After Maifanitum is calcined, add initiator potassium persulfate and chitosan stirring reaction, add the most at room temperature
Enter phytic acid and be stirred reaction, finally grind to form granule or powder.
Preferably, the calcining heat of described Maifanitum is 290～350 DEG C, and calcination time is 0.5～1 little
Time.
Preferably, the charged material weight ratio of described Maifanitum, initiator, chitosan and phytic acid is
1:0.001～0.006:0.02～0.04:0.03～0.05
Preferably, the stirring response time after described addition initiator potassium persulfate and chitosan is 1～2
Hour.
Preferably, the stirring response time after described addition phytic acid is 1.5～2.5 hours.
A concrete preferred aspect according to the present invention, described heavy-metal contaminated soil renovation agent also includes
Phosphatization slag and silicate clay, the weight percent score in soil-repairing agent of phosphatization slag and silicate clay
It is not 5%～10% and 10%～30%.Along with the development of China's mechanical industry, Treatment of Metal Surface
Enterprise develops the most therewith, in steel industry and machinery manufacturing industry field, due to the need of the application that eliminates rust
Want, generally take acid washing phosphorization technique.The phosphatization of metallic article, is the one of metal surface treatment process
Road important procedure.Parkerizing process mainly forms one layer of phosphating coat in metal surface, simultaneously because acid with
The effect of metal surface, also creates some deposits, the most referred to as phosphatization slag.The generation of phosphatization slag,
Not only consuming substantial amounts of film forming matter in Phosphating Solution, its result is to substantially reduce making of Phosphating Solution
With the life-span, add phosphatization cost；And phosphatization slag is easily attached to metal surface so that it is be difficult to clear
Wash clean, affects the quality of phosphating coat, and then affects painting effect.Therefore, it is necessary to periodic replacement
Phosphating Solution, and phosphatization slag is discharged.Wherein most enterprise uses simply stores up or fills out easily
The mode of burying processes phosphatization slag, or has Some Enterprises that these paint slags are abandoned or discharged with water, causes ring
Environment pollution.Phosphatization slag is mixed by the present invention with silicate clay and modified Maifanitum is applied in combination in making soil
Soil repair agent, on the one hand, can effectively realize resource reutilization, reduces environmental pollution；On the other hand,
The preparation cost of soil-repairing agent can be significantly reduced, improve the effect of soil-repairing agent heavy-metal ion removal
Really, simultaneously, additionally it is possible to promote the growth of crop such as Oryza sativa L..
It is further preferred that heavy-metal contaminated soil renovation agent also comprises humic acid and persulfide, and soil
In soil repair agent, the weight content of each component is as follows: modified Maifanitum 30%～60%；Phosphatization slag 5%～
10%；Silicate clay 10%～30%；Humic acid 5%～10%；Persulfide 5%～20%.
According to the another specific aspect of the present invention, heavy-metal contaminated soil renovation agent also comprises humic acid, mistake
In sulfide and fertilizer, and soil-repairing agent, the weight content of each component is as follows: modified Maifanitum
40%～60%；Humic acid 10%～20%；Persulfide 2%～10%；Fertilizer 20%～30%.
The another technical scheme that the present invention takes is: the restorative procedure of a kind of heavy-metal contaminated soil, its bag
Include use heavy-metal contaminated soil renovation agent of the present invention soil is repaired, soil-repairing agent
Consumption is every mu of 100-300kg.
Further, soil-repairing agent is uniformly mixed the surface being sprinkling upon heavy-metal contaminated soil, then enters
Row Soil tillage makes soil-repairing agent and heavy-metal contaminated soil be sufficiently mixed uniformly, balances and completes for 6-7 days
Heavy metal-polluted soil repair process.
Preferably, the consumption of soil-repairing agent is every mu of about 150kg.
Compared with prior art, beneficial effects of the present invention is as follows:
Soil-repairing agent of the present invention uses chitosan and phytic acid modification Maifanitum main as removing heavy metals
Composition, chitosan molecule is with the functional group such as hydroxyl and amino, modified to Maifanitum with chitosan,
Under initiator potassium persulfate effect, chitosan molecule is made to be connected on Maifanitum molecular surface, by
Contain substantial amounts of hydrogen bond in chitosan molecule surface, phytate molecule and chitosan molecule are by hydrogen bond phase
Combine mutually, make phytate molecule be combined in firmly on Maifanitum molecule.Phytic acid to absolutely big number metals from
Son has extremely strong complexing power, and phytic acid all can generate precipitation to bivalent metal ion, and phytate molecule leads to
Cross chitosan molecule to be well connected on Maifanitum molecule as intermediate, be greatly improved soil
The adsorption rate of earth heavy metal.Modification Maifanitum of the present invention is compared with traditional Maifanitum, and heavy metal is special
It not bivalence heavy metal (Pb2+、Cd2+、Zn2+、Cu2+、Hg2+) removal effect significantly improves,
Reach more than 90%.
Soil remediation method of the present invention, soil remediation is effective, and content of beary metal such as cadmium can reduce
To detection limit.Additionally, soil-repairing agent usage amount is few, cost reduces.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described in detail, unreceipted in embodiment
Condition be the conventional condition in this area.When addressing consumption or the dosage of material, unless stated otherwise,
Refer both to weight.The phosphatization slag used in following example is phosphatization slag produced by Zinc phosphating solution, from
Produced by Treatment of Metal Surface Zinc phosphating technique.Following persulfide all uses over cure calcium.
Embodiment 1
The preparation of modified Maifanitum: carrying out calcining 0.7 hour at 300 DEG C by Maifanitum, addition is drawn
Send out agent potassium peroxydisulfate and chitosan stirring is reacted 1.5 hours, add when temperature is cooled to room temperature and plant
Acid is stirred reacting 2 hours, finally grinds to form graininess, crosses 200 mesh sieves.Wherein: wheat meal
The charged material weight of stone, potassium peroxydisulfate, chitosan and phytic acid is than for 1:0.004:0.02:0.03.
Embodiment 2
A kind of soil-repairing agent, it is by modified Maifanitum 40%；Phosphatization slag 8%；Silicate clay 30%；
Humic acid 7%；Persulfide 15% mixes.Wherein modified Maifanitum prepares according to embodiment 1 method.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 8.45.
Embodiment 3
A kind of soil-repairing agent, it is by modified Maifanitum 60%；Phosphatization slag 5%；Silicate clay 15%；
Humic acid 10%；Persulfide 10% mixes.Wherein modified Maifanitum is according to embodiment 1 method system
?.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 8.14.
Comparative example 1
A kind of soil-repairing agent, it is by Maifanitum 60%；Phosphatization slag 5%；Silicate clay 15%；Rotten
Grow acid 10%；Persulfide 10% mixes.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 7.98.
Embodiment 4
A kind of soil-repairing agent, it is by modified Maifanitum 40%；Humic acid 20%；Persulfide 10%；
Fertilizer 30% mixes.Wherein modified Maifanitum prepares according to embodiment 1 method.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 8.23.
Embodiment 5
A kind of soil-repairing agent, it is by modified Maifanitum 60%；Humic acid 10%；Persulfide 5%；
Fertilizer 25% mixes.Wherein modified Maifanitum prepares according to embodiment 1 method.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 7.89.
Comparative example 2
A kind of soil-repairing agent, it is by Maifanitum 40%；Humic acid 20%；Persulfide 10%；Organic
Fertile 30% mixes.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 7.82.
Comparative example 3
A kind of soil-repairing agent, it is by Maifanitum 35%；Chitosan 3%；Phytic acid 2%；Humic acid 20%；
Persulfide 10%；Fertilizer 30% mixes.
This soil-repairing agent outward appearance is grizzled particle shape solid, and solid-to-liquid ratio (with the weight ratio of water) is 1:2.5
Time pH be 8.04.
Embodiment 6
Use field plot (Oryza sativa L.) test, respectively with embodiment 2-5 and comparative example 1-3 gained soil
Soil is repaired by renovation agent, and concrete operations are as follows:
Soil-repairing agent uniformly mixes the surface being sprinkling upon heavy metal cadmium soil, and every mu is 150kg, so
After carry out Soil tillage and make soil-repairing agent and heavy metal cadmium soil be sufficiently mixed uniformly, balance 7 days
Complete heavy metal-polluted soil repair process.
Testing the soil after repairing, result sees Tables 1 and 2.In Tables 1 and 2, concentration unit is
mg/L。
Table 1
| Sequence number | pH | The available state concentration of untreated Cadmium in Soil | The available state concentration of Cadmium in Soil after process |
| Embodiment 2 | 8.45 | 0.4650 | Do not detect |
| Embodiment 3 | 8.14 | 0.4650 | Do not detect |
| Embodiment 4 | 8.23 | 0.4650 | 0.1045 |
| Embodiment 5 | 7.89 | 0.4650 | 0.1128 |
| Comparative example 1 | 7.98 | 0.4650 | 0.2378 |
| Comparative example 2 | 7.82 | 0.4650 | 0.1956 |
| Comparative example 3 | 8.04 | 0.4650 | 0.2078 |
Table 2
| Sequence number | pH | The available state concentration of untreated Mercury in Soil | The available state concentration of Mercury in Soil after process |
| Embodiment 2 | 8.45 | 0.0858 | Do not detect |
| Embodiment 3 | 8.14 | 0.0858 | 0.0021 |
| Embodiment 4 | 8.23 | 0.0858 | 0.0178 |
| Embodiment 5 | 7.89 | 0.0858 | 0.0151 |
| Comparative example 1 | 7.98 | 0.0858 | 0.0324 |
| Comparative example 2 | 7.82 | 0.0858 | 0.0448 |
| Comparative example 3 | 8.04 | 0.0858 | 0.0387 |
Embodiment 7
Reducing the method for content of beary metal in Oryza sativa L., it takes embodiment 2 before general planting Oryza sativa L.
Soil-repairing agent is repaired according to the method for embodiment 6.The yield of rice cultivation and water after repairing
The Oryza sativa L. that rice content of beary metal is planted with non-rehabilitating soil compares, and is shown in Table 3.
Table 3
Claims (10)
1. a heavy-metal contaminated soil renovation agent, it is characterised in that: described heavy-metal contaminated soil renovation agent
Comprising modified Maifanitum, described modified Maifanitum percentage by weight in described soil-repairing agent is
30%～60%, described modified Maifanitum is prepared via a method which to obtain: after being calcined by Maifanitum, add
Initiator potassium persulfate and chitosan stirring reaction, add phytic acid the most at room temperature and be stirred reaction,
Finally grind to form granule or powder.
Heavy-metal contaminated soil renovation agent the most according to claim 1, it is characterised in that: described wheat meal
The calcining heat of stone is 290～350 DEG C, and calcination time is 0.5～1 hour.
Heavy-metal contaminated soil renovation agent the most according to claim 1, it is characterised in that: described wheat
The charged material weight of meal stone, initiator, chitosan and phytic acid is than for 1:0.001～0.006:
0.02～0.04:0.03～0.05.
Heavy-metal contaminated soil renovation agent the most according to claim 1, it is characterised in that add described in:
Entering the stirring response time after initiator potassium persulfate and chitosan is 1～2 hour.
Heavy-metal contaminated soil renovation agent the most according to claim 1, it is characterised in that add described in:
Entering the stirring response time after phytic acid is 1.5～2.5 hours.
6. according to the heavy-metal contaminated soil renovation agent described in claim any one of claim 1 to 5,
It is characterized in that: described heavy-metal contaminated soil renovation agent also includes phosphatization slag and silicate clay, institute
Phosphatization slag and the silicate clay percentage by weight in described soil-repairing agent stated are respectively 5%～10%
With 10%～30%.
7. the heavy-metal contaminated soil renovation agent stated according to claim 6, it is characterised in that: described weight
Metallic pollution soil-repairing agent also comprises the weight of each component in humic acid and persulfide, and soil-repairing agent
Amount content is as follows:
Modified Maifanitum 30%～60%；Phosphatization slag 5%～10%；Silicate clay 10%～30%；Rotten
Grow acid 5%～10%；Persulfide 5%～20%.
8. according to the heavy-metal contaminated soil renovation agent described in one claim of people in claim 1 to 5,
It is characterized in that: described heavy-metal contaminated soil renovation agent also comprises humic acid, persulfide and has
Machine is fertile, and in soil-repairing agent, the weight content of each component is as follows:
Modified Maifanitum 40%～60%；Humic acid 10%～20%；Persulfide 2%～10%；Have
Machine fertile 20%～30%.
9. the restorative procedure of a heavy-metal contaminated soil, it is characterised in that: the method includes using right
In requirement 1 to 8, soil is repaiied by the heavy-metal contaminated soil renovation agent described in any one claim
Multiple, the consumption of described soil-repairing agent is every mu of 100-300kg.
Restorative procedure the most according to claim 9, it is characterised in that: soil-repairing agent is uniformly mixed
Close the surface being sprinkling upon heavy-metal contaminated soil, then carry out Soil tillage and make soil-repairing agent with heavy metal-polluted
Dye soil is sufficiently mixed uniformly, balances and within 6-7 days, completes heavy metal-polluted soil repair process.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833651A (en) * | 2016-12-21 | 2017-06-13 | 河北青茂环保科技有限公司 | Active medical stone soil heavy mental ion adsorption passivator and preparation method thereof |
| CN106947495A (en) * | 2017-04-28 | 2017-07-14 | 明光市飞洲新材料有限公司 | A kind of efficient soil-repairing agent and preparation method thereof |
| CN108929694A (en) * | 2018-09-10 | 2018-12-04 | 芜湖格丰环保科技研究院有限公司 | It is a kind of for administering the soil conditioner and preparation method thereof in light moderate cadmium pollution acidity farmland |
| CN109097052A (en) * | 2018-08-31 | 2018-12-28 | 哈密国家农业科技园区管委会 | A kind of natural medical stone agricultural soil heavy metal deactivator and preparation method thereof |
| CN110434160A (en) * | 2019-08-20 | 2019-11-12 | 河北省科学院地理科学研究所 | A kind of restorative procedure of heavy-metal contaminated soil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369481B (en) * | 2019-07-02 | 2021-11-09 | 南华大学上虞高等研究院有限公司 | Embedded package for multistage remediation of uranium-contaminated soil and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924148A (en) * | 2012-10-18 | 2013-02-13 | 大连碧城环保科技有限公司 | Process method for converting vegetable flower fertilizer by waste industrial phosphating solution |
| CN104498046A (en) * | 2014-11-27 | 2015-04-08 | 苏州嘉禧萝生物科技有限公司 | Heavy-metal-polluted soil remediation additive |
| CN104560049A (en) * | 2015-02-09 | 2015-04-29 | 湖南神隆超级稻丰产工程有限公司 | Soil heavy metal repairing agent |
| CN104946265A (en) * | 2015-06-29 | 2015-09-30 | 青岛精石通精密机械制造有限公司 | Efficient heavy metal soil restoration agent |
-
2016
- 2016-05-11 CN CN201610307635.5A patent/CN105885863B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924148A (en) * | 2012-10-18 | 2013-02-13 | 大连碧城环保科技有限公司 | Process method for converting vegetable flower fertilizer by waste industrial phosphating solution |
| CN104498046A (en) * | 2014-11-27 | 2015-04-08 | 苏州嘉禧萝生物科技有限公司 | Heavy-metal-polluted soil remediation additive |
| CN104560049A (en) * | 2015-02-09 | 2015-04-29 | 湖南神隆超级稻丰产工程有限公司 | Soil heavy metal repairing agent |
| CN104946265A (en) * | 2015-06-29 | 2015-09-30 | 青岛精石通精密机械制造有限公司 | Efficient heavy metal soil restoration agent |
Non-Patent Citations (3)
| Title |
|---|
| A.J. VARMA等: "Metal complexation by chitosan and its derivatives: a review", 《CARBOHYDRATE POLYMERS》 * |
| 娄燕宏等: "粘土矿物修复土壤重金属污染的研究进展", 《山东农业科学》 * |
| 李爱阳等: "复合吸附剂麦饭石-壳聚糖的制备及对Zn2 +的吸附性能", 《材料保护》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833651A (en) * | 2016-12-21 | 2017-06-13 | 河北青茂环保科技有限公司 | Active medical stone soil heavy mental ion adsorption passivator and preparation method thereof |
| CN106947495A (en) * | 2017-04-28 | 2017-07-14 | 明光市飞洲新材料有限公司 | A kind of efficient soil-repairing agent and preparation method thereof |
| CN109097052A (en) * | 2018-08-31 | 2018-12-28 | 哈密国家农业科技园区管委会 | A kind of natural medical stone agricultural soil heavy metal deactivator and preparation method thereof |
| CN108929694A (en) * | 2018-09-10 | 2018-12-04 | 芜湖格丰环保科技研究院有限公司 | It is a kind of for administering the soil conditioner and preparation method thereof in light moderate cadmium pollution acidity farmland |
| CN110434160A (en) * | 2019-08-20 | 2019-11-12 | 河北省科学院地理科学研究所 | A kind of restorative procedure of heavy-metal contaminated soil |
| CN110434160B (en) * | 2019-08-20 | 2020-05-26 | 河北省科学院地理科学研究所 | Remediation method for heavy metal contaminated soil |
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