CN109622594A - A method of improving heavy metal pollution of soil using polymer absorption process - Google Patents
A method of improving heavy metal pollution of soil using polymer absorption process Download PDFInfo
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- CN109622594A CN109622594A CN201811492612.1A CN201811492612A CN109622594A CN 109622594 A CN109622594 A CN 109622594A CN 201811492612 A CN201811492612 A CN 201811492612A CN 109622594 A CN109622594 A CN 109622594A
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- soil
- heavy metal
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- absorption process
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The present invention relates to organic fertilizer technical fields, and in particular to a method of improve heavy metal pollution of soil using polymer absorption process；It is by being prepared using substances such as organic solvent, modified silica-gel polyacrylamide, organic monomer intermixture, zeolite, macromolecular additional adsorbents, initiator, organic fertilizer compound fertilizer, adjuvants by polymerization reaction.The present invention improves the content of heavy metal-polluted soil using polymer absorption process, it is to be administered in such a way that two ways reaches synergy, one is the adsorptivity having by being conducive to polymer, heavy metal ion is adsorbed, salt not soluble in water is formed, achievees the purpose that the content for reducing heavy metal ions in soil；The second is organic compound fertilizer is added wherein simultaneously, the effective fertility for increasing soil absorbs the heavy metal ion in the soil of part, by promoting the growth of plant to reduce the content of heavy metal in soil.
Description
Technical field
Heavy Metal Pollution Control technical field of the present invention, and in particular to a kind of to improve a soil huge sum of money using polymer absorption process
Belong to the method for pollution.
Background technique
With a large amount of development of chemical engineering industry, the discharge of a large amount of heavy metal, it is serious polluted soil, river,
It is lauched, brings serious harm to people's health.In addition, heavy metal-polluted soil can also promote the desertification in soil, me is given
The grain security of state brings serious threat, therefore the improvement of heavy metal pollution of soil just seems very important.
Chinese patent application CN108380653A discloses that the invention discloses a kind of improvement sides of heavy metal pollution of soil
Method carrys out activating soil particle surface by adding biodegradable citric acid in contaminated soil as heavy metallic activation agent
Non-free state heavy metal, be allowed to be converted into being easy to the free state heavy metal of captured absorption, to enhance the super accumulation of heavy metal
Plant absorption efficiency, therefore pollution amelioration speed can be improved, and citric acid can be utilized by biological (such as saccharomycete) degradation, be not present two
Secondary pollution problem, but this method is that plant absorption heavy metal is promoted to be administered, and will lead to heavy metal in Grain plants
The increase of content influences the safety of grain.
Chinese patent application CN107309266A discloses that the invention discloses a kind of Compound Heavy Metals serious pollution soil
Eluent and its method.The present invention repairs As, Cd, Cr, Ni, Pb, Zn heavy metal severe using iron chloride and citric acid compounding
Contaminated soil belongs to the Treatment process field of heavy metal pollution of soil.Compound elution effect, which compensates for single eluent, to go
Except a kind of or a few heavy metal effect.It is tested by response surface design, has investigated eluent concentration, solid-to-liquid ratio, revolving speed, leaching
The influence of time, elution number to elution effect is washed, determines optimal elution condition.It is 0.56mol/L, lemon in ferric chloride concn
Acid concentration is 0.57mol/L, Tu Shui ratio 1:15, revolution 200r/min, elutes time 10h, at Continuous leaching 3 times, heavy metal leaching
It is best to wash removal effect.It is biodegradable in the citric acid that the present invention uses, it is a kind of environmental-friendly eluent；And the compounding
ELUTION METHOD can effectively remove the various heavy in Compound Heavy Metals soil, and the cost is relatively high for this method, be unfavorable for
The large-scale pollution for administering heavy metal-polluted soil.
Above-mentioned patent there are aiming at the problem that, the present invention have developed utilizes polymer absorption process improve heavy metal pollution of soil
Method can be good at administer heavy metal pollution of soil problem.
Summary of the invention
In order to achieve the purpose that in background technique, an a kind of utilization polymer absorption process improvement soil huge sum of money proposed by the present invention
Belong to the method for pollution；
What the present invention realized by the following technical solutions,
A method of improving heavy metal pollution of soil using polymer absorption process are as follows:
By the organic solvent of 100-120 part of mass fraction meter, 10-20 parts of modified silica-gel, 35-45 polyacrylamide
Amine, 6-8 parts of organic monomer intermixture, 5-10 parts of zeolite, 10-12 parts of macromolecular additional adsorbents, 1-2 parts of initiator
It is added in reaction kettle and is reacted, temperature of reaction kettle is 70-80 DEG C, and the reaction time is 4-6 hours, after fully reacting, and 2-3 is added
Obtained substance is spray-dried by 20% sodium hydroxide solution of part after carrying out reaction 1-2 hours, after drying completely,
It weighs the 20-30 parts substance to be added in batch mixer, then again by 60-80 parts of organic fertilizer compound fertilizer, 10-15 parts of auxiliary
Agent, 40-50 parts of water are added in batch mixer and are mixed, and after mixing, which is granulated, and obtained particle carries out
Dry in the shade, after drying in the shade to substance be exactly polymer absorbant, in use, soil is carried out processing of digging, then by preparation
Polymer absorbant applies fertilizer according to plant, after a period of time, can carry out the heavy metal ion in soil
Absorption, while the fertility of soil can also be increased, promote the growth of plant.
Further, the modified silica-gel are as follows: by the silica gel powder, 4-5 parts of polyester of 30-40 part of mass fraction meter
The organotin catalysts of polyalcohol, 1-3 parts MDI, 0.5-1 part, which are added in reaction kettle, carries out reaction 2-3 hours, temperature of reaction kettle
It is 50-60 DEG C, the substance obtained after fully reacting is exactly modified silica-gel.
Further, the macromolecular additional adsorbents are as follows: by the polyvinyl acetate of 20-30 part of mass fraction meter
Potassium, 4-8 parts of polyacrylic acid, 5-8 parts of polyvinyl alcohol, 3-6 parts of oxidic polyethylene, 40-60 parts of water enter in reaction kettle into
Row reaction 1-2 hours, temperature of reaction kettle are 76 DEG C, and the substance obtained after fully reacting is exactly macromolecular auxiliary absorption.
Further, the organic monomer intermixture are as follows: by HEA, 6-10 part of 10-20 part of mass fraction meter
BA, 4-6 parts of MMA is added in batch mixer and is mixed, the substance obtained after mixing, which is exactly organic monomer mixing
Agent.
Further, the initiator are as follows: by the benzoyl peroxide, 4-8 parts of over cure of 4-6 part of mass fraction meter
Sour sodium, 10-20 parts of toluene is added to the mixer the substance obtained after mixing, which is exactly initiator.
Further, the solvent are as follows: by propane, 6-10 parts of the pentamethylene, 10- of 10-12 part of mass fraction meter
15 parts of toluene is added to the mixer the substance obtained after mixing, which is exactly solvent.
Further, the adjuvant are as follows: by the volcanic ash of 10-20 part of mass fraction meter, 5-10 parts of clay,
12-18 parts of plant ash is added to the mixer the substance obtained after mixing, which is exactly adjuvant.
Beneficial to benefit
The present invention improves the content of heavy metal-polluted soil using polymer absorption process, is to reach synergy by two ways
Mode administered, one is the adsorptivity having by being conducive to polymer, heavy metal ion adsorbed, formed
Salt not soluble in water achievees the purpose that the content for reducing heavy metal ions in soil；The second is being added wherein simultaneously organic multiple
Hefei, the effective fertility for increasing soil absorb the heavy metal ion in the soil of part, by promoting the growth of plant to subtract
The content of few heavy metal in soil.
Specific embodiment
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, below in conjunction with experimental data, to this
The preferred embodiment of invention is described in detail, to facilitate the technical staff to understand.
Embodiment 1
A method of improving heavy metal pollution of soil using polymer absorption process are as follows:
By 120 parts of organic solvent of mass fraction meter, 15 parts of modified silica-gel, 45 polyacrylamide, 7 parts organic
Monomer intermixture, 10 parts of zeolite, 11 parts of macromolecular additional adsorbents, 2 parts of initiator, which are added in reaction kettle, to be reacted,
Temperature of reaction kettle is 70-80 DEG C, and the reaction time is 4-6 hours, after fully reacting, and 2 parts of 20% sodium hydroxide solution is added,
After carrying out reaction 1-2 hours, obtained substance is spray-dried, after drying completely, it is mixed to weigh 26 parts of substance addition
In material machine, then 70 parts of organic fertilizer compound fertilizer, 13 parts of adjuvant, 45 parts of water are added in batch mixer and are mixed again,
After mixing, which is granulated, obtained particle dries in the shade, after drying in the shade to substance be exactly Polymer adsorption
Then agent applies fertilizer the polymer absorbant of preparation according to plant in use, soil is carried out processing of digging, and one
After the section time, the heavy metal ion in soil can be adsorbed, while the fertility of soil can also be increased, promote to plant
The growth of object.
Further, the modified silica-gel are as follows: by 40 parts of silica gel powder of mass fraction meter, 4 parts of polyester polyols
Alcohol, 1 part of MDI, 0.8 part of organotin catalysts, which are added in reaction kettle, carries out reaction 2-3 hours, temperature of reaction kettle 50-60
DEG C, the substance obtained after fully reacting is exactly modified silica-gel.
Further, the macromolecular additional adsorbents are as follows: by 30 parts of polyvinyl acetate potassium of mass fraction meter, 6
The polyacrylic acid, 5 parts of polyvinyl alcohol, 4 parts of oxidic polyethylene, 60 parts of water of part, which enter, carries out reaction 1-2 hours in reaction kettle,
Temperature of reaction kettle is 76 DEG C, and the substance obtained after fully reacting is exactly macromolecular auxiliary absorption.
Further, the organic monomer intermixture are as follows: by 10 parts of HEA of mass fraction meter, 8 parts of BA, 4 parts
MMA is added in batch mixer and is mixed, and the substance obtained after mixing, the substance is exactly organic monomer intermixture.
Further, the initiator are as follows: by 4 parts of benzoyl peroxide of mass fraction meter, 7 parts of persulfuric acid
Sodium, 10 parts of toluene are added to the mixer the substance obtained after mixing, which is exactly initiator.
Further, the solvent are as follows: by 10 parts of propane of mass fraction meter, 8 parts of pentamethylene, 10 parts of toluene
It is added to the mixer the substance obtained after mixing, which is exactly solvent.
Further, the adjuvant are as follows: by 20 parts of volcanic ash of mass fraction meter, 8 parts of clay, 12 parts of grass
Wood ash is added to the mixer the substance obtained after mixing, which is exactly adjuvant.
Embodiment 2
A method of improving heavy metal pollution of soil using polymer absorption process are as follows:
By 110 parts of organic solvent of mass fraction meter, 20 parts of modified silica-gel, 40 polyacrylamide, 6 parts organic
Monomer intermixture, 8 parts of zeolite, 12 parts of macromolecular additional adsorbents, 2 parts of initiator, which are added in reaction kettle, to be reacted,
Temperature of reaction kettle is 70-80 DEG C, and the reaction time is 4-6 hours, after fully reacting, and 2 parts of 20% sodium hydroxide solution is added,
After carrying out reaction 1-2 hours, obtained substance is spray-dried, after drying completely, it is mixed to weigh 25 parts of substance addition
In material machine, then 80 parts of organic fertilizer compound fertilizer, 13 parts of adjuvant, 40 parts of water are added in batch mixer and are mixed again,
After mixing, which is granulated, obtained particle dries in the shade, after drying in the shade to substance be exactly Polymer adsorption
Then agent applies fertilizer the polymer absorbant of preparation according to plant in use, soil is carried out processing of digging, and one
After the section time, the heavy metal ion in soil can be adsorbed, while the fertility of soil can also be increased, promote to plant
The growth of object.
Further, the modified silica-gel are as follows: by 35 parts of silica gel powder of mass fraction meter, 5 parts of polyester polyols
Alcohol, 2 parts of MDI, 0.5 part of organotin catalysts, which are added in reaction kettle, carries out reaction 2-3 hours, temperature of reaction kettle 50-60
DEG C, the substance obtained after fully reacting is exactly modified silica-gel.
Further, the macromolecular additional adsorbents are as follows: by 25 parts of polyvinyl acetate potassium of mass fraction meter, 4
The polyacrylic acid, 6 parts of polyvinyl alcohol, 6 parts of oxidic polyethylene, 50 parts of water of part, which enter, carries out reaction 1-2 hours in reaction kettle,
Temperature of reaction kettle is 76 DEG C, and the substance obtained after fully reacting is exactly macromolecular auxiliary absorption.
Further, the organic monomer intermixture are as follows: by 15 parts of HEA of mass fraction meter, 10 parts of BA, 5 parts
MMA be added batch mixer in mixed, the substance obtained after mixing, the substance is exactly organic monomer intermixture.
Further, the initiator are as follows: by 5 parts of benzoyl peroxide of mass fraction meter, 4 parts of persulfuric acid
Sodium, 15 parts of toluene are added to the mixer the substance obtained after mixing, which is exactly initiator.
Further, the solvent are as follows: by 11 parts of propane of mass fraction meter, 10 parts of pentamethylene, 12 parts of first
Benzene is added to the mixer the substance obtained after mixing, which is exactly solvent.
Claims (7)
1. a kind of method for improving heavy metal pollution of soil using polymer absorption process, which is characterized in that described utilizes polymerization
The method of object absorption method improvement heavy metal pollution of soil are as follows: by the organic solvent of 100-120 part of mass fraction meter, 10-20 parts
Modified silica-gel, the polyacrylamide of 35-45,6-8 parts of organic monomer intermixture, 5-10 parts of zeolite, big point of 10-12 parts
Sub- additional adsorbents, 1-2 parts of initiator, which is added in reaction kettle, to be reacted, and temperature of reaction kettle is 70-80 DEG C, and the reaction time is
4-6 hours, after fully reacting, 2-3 parts of 20% sodium hydroxide solution is added, carries out after reacting 1-2 hours, the object that will be obtained
Matter is spray-dried, it is dry completely after, weigh in 20-30 part of substance addition batch mixer, then again have 60-80 parts
Ji Fei compound fertilizer, 10-15 parts of adjuvant, 40-50 parts of water are added in batch mixer and are mixed, after mixing, by the object
Matter is granulated, and obtained particle dries in the shade, after drying in the shade to substance be exactly polymer absorbant, in use, by soil
Processing of digging is carried out, then the polymer absorbant of preparation applies fertilizer according to plant, it, can after a period of time
Heavy metal ion in soil is adsorbed, while the fertility of soil can also be increased, promotes the growth of plant.
2. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the modified silica-gel are as follows: by the silica gel powder of 30-40 part of mass fraction meter, 4-5 parts of polyester polyol, 1-3 parts
MDI, 0.5-1 part organotin catalysts be added reaction kettle in carry out reaction 2-3 hour, temperature of reaction kettle be 50-60 DEG C, instead
The substance obtained after answering completely is exactly modified silica-gel.
3. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the macromolecular additional adsorbents are as follows: by the polyvinyl acetate potassium of 20-30 part of mass fraction meter, poly- the third of 4-8 parts
Olefin(e) acid, 5-8 parts of polyvinyl alcohol, 3-6 parts of oxidic polyethylene, 40-60 parts of water, which enter, carries out reaction 1-2 hours in reaction kettle,
Temperature of reaction kettle is 76 DEG C, and the substance obtained after fully reacting is exactly macromolecular auxiliary absorption.
4. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the organic monomer intermixture are as follows: by the MMA of BA, 4-6 part of HEA, 6-10 part of 10-20 part of mass fraction meter
It is added in batch mixer and is mixed, the substance obtained after mixing, the substance is exactly organic monomer intermixture.
5. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the initiator are as follows: by the benzoyl peroxide of 4-6 part of mass fraction meter, 4-8 parts of sodium peroxydisulfate, 10-20 parts
Toluene be added to the mixer the substance obtained after mixing, which is exactly initiator.
6. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the solvent are as follows: add the propane, 6-10 parts of pentamethylene, 10-15 parts of toluene of 10-12 part of mass fraction meter
Enter the substance obtained after mixing in mixing machine, which is exactly solvent.
7. a kind of method for improving heavy metal pollution of soil using polymer absorption process according to claim 1, feature
It is, the adjuvant are as follows: by the volcanic ash of 10-20 part of mass fraction meter, 5-10 parts of clay, 12-18 parts of vegetation
Ash is added to the mixer the substance obtained after mixing, which is exactly adjuvant.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452055A (en) * | 2019-09-10 | 2019-11-15 | 重庆玖正环境科技有限公司 | A method of improving heavy metal pollution of soil using colloid adsorption method |
| RU2777529C1 (en) * | 2022-01-24 | 2022-08-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный горный университет" | Method for detoxifying soil contaminated with heavy metals |
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