CN110369481A - A kind of reparation of uranium contaminated soil multistage pre-buried packet and its application method - Google Patents
A kind of reparation of uranium contaminated soil multistage pre-buried packet and its application method Download PDFInfo
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- CN110369481A CN110369481A CN201910590142.0A CN201910590142A CN110369481A CN 110369481 A CN110369481 A CN 110369481A CN 201910590142 A CN201910590142 A CN 201910590142A CN 110369481 A CN110369481 A CN 110369481A
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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
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- 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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Abstract
The invention discloses a kind of reparation of uranium contaminated soil multistage pre-buried packet and its application methods, belong to uranium contaminated soil remediation technical field, a kind of mode that the reparation of uranium contaminated soil multistage can be pre-buried by clear soil with pre-buried packet, on the one hand the uranyl ion in soil is shifted by strict water guide net, a large amount of uranyl ions are actively rapidly gathered in pre-buried packet, it is repaired convenient for carrying out fixed point, on the other hand the absorption and accumulation to uranyl ion are greatly improved by special soil-repairing agent, it promotes the agglomerate to uranyl ion based on nanoporous characteristic and is filled in micropore and avoid pollution diffusion, after being repaired by active level-one, uranyl ion in uranium contaminated soil is reduced to certain value, then pass through the second level reparation of natural style, that is heavy metal uranium enriching plant reparation, increase soil organic matter content and soil fertility, improve With maintenance soll layer structure, lay a solid foundation for direct utilize of the soil after uranium pollution amelioration.
Description
Technical field
The present invention relates to uranium contaminated soil remediation technical fields, repair more specifically to a kind of uranium contaminated soil multistage
It is multiplexed pre-buried packet and its application method.
Background technique
In recent years, the heavy metal pollution problem of China's soil is increasingly prominent, to ecological environment, food safety and human health
It constitutes and seriously threatens, can not be ignored.The industrial discharges such as dyestuff, chemical industry, process hides, exploitation of mineral resources, smelting and processing
Exhaust gas, waste water, waste residue contain a large amount of heavy metal, pass through (especially dirty to fill), solid waste (sludge, rubbish etc.) heap of pouring water
The modes such as long-pending and atmospheric sedimentation enter soil, cause heavy metal in soil content to increase, especially the heavy metal of exchangeable species,
It directly absorbed, be enriched with by crops, directly threatening human health.Compared to atmosphere pollution and water pollution, heavy metal soil is dirty
Dye is most scabrous.This is because soil pollution is easier to spread or be diluted unlike atmosphere pollution or water pollution,
Heavy metal once enters soil, degradation get up it is just highly difficult, and by the soil of heavy metal pollution almost without use value, because
This, has been very urgent the improvement of soil pollution by heavy metal.
The development of nuclear industry, the extensive use of nuclear technology and other industry, agricultural, the energy, military affairs, traffic, medical treatment are defended
Activity in the fields such as raw is continuously increased the radionuclide background values of ecological environment around the mankind, into the radiation in environment
Property nucleic can be migrated in big gas and water and soil, enter in humans and animals body with food chain, generate radiation injury, part nucleic
It also will affect the biochemical reactions and metabolic process of human body.Uranium is a kind of important radionuclide, while having chemical dirt concurrently
Contamination property and radioactivity, in water body and soil mostly in the form of uranyl ion (UO22+) exist, can by mining,
The modes such as nuclear test, nuclear fuel, nuclear weapon and unexpected leakage are discharged into soil, deposit and underground water, cause soil and ground
Uranium pollution in being lauched, endangers environment for the survival of mankind.
The biological restoration developed in recent years, it is low in cost with its, high-efficient, at low cost, safe and environment-friendly the features such as, at
For a research hotspot of uranium contaminated soil remediation technology, numerous scholars is attracted to have conducted extensive research, and achieved very much
Gratifying research achievement, such as phytoremediation, or paving fills out the mode of repair layer in uranium contaminated soil, but all has very big
Limitation, phytoremediation is although without secondary pollution, and repairing effect is good, but repair speed it is more slow, heavily contaminated soil
It is even more to be difficult to limit diffusion velocity, and to be protected from environmental factor many for plant itself in the environment of earth, it is difficult to effectively promote, and
Though paving fills out the good fast speed simultaneously of repair layer effect, on the one hand with high costs, recycling is difficult, is on the other hand also difficult to effectively
The sprawling diffusion for preventing uranium from polluting.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of uranium contaminated soil multistage reparation use
Pre-buried packet and its application method, the mode that it can be pre-buried by clear soil, on the one hand shift soil by strict water guide net
In uranyl ion, a large amount of uranyl ions are actively rapidly gathered in pre-buried packet, are repaired convenient for carrying out fixed point, on the other hand
The absorption and accumulation to uranyl ion are greatly improved by special soil-repairing agent, are promoted based on nanoporous characteristic to uranium
The agglomerate of acyl ion is simultaneously filled in micropore and avoids pollution diffusion, after being repaired by active level-one, in uranium contaminated soil
Uranyl ion is reduced to certain value, then passes through the second level reparation of natural style, i.e. heavy metal uranium enriching plant reparation increases soil
The content of organic matter and soil fertility improve and maintain soll layer structure, beat for directly utilizing for the soil after uranium pollution amelioration
Lower solid foundation.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of pre-buried packet of uranium contaminated soil multistage reparation, the pre-buried packet includes pre-buried packet ontology, and the pre-buried packet is originally
It is filled with soil-repairing agent in vivo, the pre-buried packet ontology upper end, which is dug, pilot hole, and the pilot hole inner end wall is fixedly connected
There is thread bush, the thread bush inner end is threaded with screw thread platform, and screw thread platform center, which is dug, connecting hole, the company
It connects and is fixedly connected with transitional ball in hole, the transitional ball upper end is fixedly connected with deformed rod, and the deformed rod upper end is fixedly connected
There is locating rod, the transitional ball upper end is fixedly connected with several Heshui fibers, and the Heshui fiber is along deformed rod annular array point
Cloth, the transitional ball lower end is fixedly connected with several points of water celluloses, described that water cellulose is divided uniformly to be plugged on soil-repairing agent inner end.
Further, it is 30-40 parts of organosilicon microorganism fertilizer, modified medical stone that the soil-repairing agent, which includes parts by weight,
20-30 parts of powder, 5-20 parts of bentonite, 5-10 parts of natural zeolite, 5-10 parts of apatite, 3-15 parts of chelating agent.
Further, the organosilicon microorganism fertilizer by biosurfactant to D. radiodurans body function at
After reason, mixed with rotted pig manure, corn stover, be sufficiently mixed uniformly carry out compost, aerobic fermentation, then with the silicate after hydrolysis
Sufficiently dry powder processed, obtains fertilizer powder, then by the fertilizer powder and polysiloxanes, platinum catalyst, dimethyl after being mixed
The molding that is heating and curing after silicone oil and ethyl orthosilicate mixing obtains gel solids, and the gel solids are warming up to 400 DEG C -850
It DEG C is pyrolyzed to obtain the nanoporous repair materials under an inert atmosphere, the porosity of the nanoporous repair materials is
80%-95%, aperture 1nm-100nm, D. radiodurans belong to extreme microorganism, to ionising radiation, ultraviolet light, drying,
The lethal and mutation effect of the various DNA damage media such as strong oxidizer and some chemical mutagens shows surprising resistance, is praised
For " most indomitable bacterium on the earth ", the reparation of uranium pollution can be effectively realized, while being promoted based on nanoporous characteristic to uranium
The agglomerate of acyl ion is simultaneously filled in micropore and avoids pollution diffusion, and in addition organosilicon microorganism fertilizer, which has, restores soil acid-base equilibrium
Ability, can be with the bioactivity of heavy metal-passivated ion, organosilicon material is pollution-free to soil and ecology, can also improve soil
Earth.
Further, after the modified medical stone powder calcines medical stone, initiator potassium persulfate is added and chitosan stirs
Reaction is mixed, phytic acid is then added at room temperature and is stirred to react, particle or powdered is finally ground into, using chitosan and plant
The modified medical stone of acid is as removing heavy metals main component, and chitosan molecule is with functional groups such as hydroxyl and amino, with chitosan pair
Medical stone is modified, under initiator potassium persulfate effect, is connected to chitosan molecule on medical stone molecular surface, since shell is poly-
A large amount of hydrogen bond is contained on glycan molecule surface, and phytate molecule and chitosan molecule are be combined with each other by hydrogen bond, makes phytate molecule firmly
Combination on medical stone molecule, phytic acid has extremely strong complexing power to number metal ions big absolutely, and phytic acid is to bivalent metal ion
Precipitating is produced, phytate molecule is connected on medical stone molecule by chitosan molecule as intermediate well, greatly
Improve the adsorption rate of heavy metal-polluted soil.
Further, screw thread platform inner end is provided with the controller of power supply, and the controller is connected with temperature sensing
Device, it is described that the cutting of water cellulose inner end is divided to have heating tube seat, heating wire, the heating wire and control are installed in the heating tube seat
Device is electrically connected, and the optimum growth temperature of D. radiodurans is 30 DEG C, and at 37 DEG C, the speed of growth is most fast, is by controller
D. radiodurans remain at most suitable growth temperature, and then improve the reparation speed that D. radiodurans pollute uranium
And quality.
Further, the Heshui fiber, transitional ball and divide water cellulose to be all made of super water-absorbent material to be made, the superabsorbent water
Material is mixed using hydroscopic high-molecular resin and water suction villus fiber according to the ratio of 1:1, and the water suction villus fiber is logical
It crosses polyacrylic acid modified rear progress spinning to be made, the hydroscopic high-molecular resin partial size is 100-120mesh, the water suction villus
Fiber softening, fluffy degree is high, and fiber is thick and grows, and length is preferably 2.7-3.0mm, and fines content is low, and reticular fibre is uniform, net
Network pulling force is 7N or more, and super water-absorbent material has extremely strong water imbibition, moisture that can actively in " arresting " soil, and then completion
The aggregation of uranyl ion is adsorbed.
Further, the deformed rod includes cylindrical electronic air bag, and electronic air bag and controller are electrically connected, institute
It states electronic air bag outer end and is enclosed with reinforcement nylon layer, the reinforcement nylon layer surface is coated with corrosion-resistant finishes, and deformed rod has shape
The changeable flexibility of shape avoids the phenomenon that fractureing during soil backfills, while also convenient transportation and embedded, reinforcement
The case where nylon layer plays the role of the electronic air bag of protection, avoids its rupture generation.
Further, the size of the pre-buried packet ontology is 50*50*20cm, and the pre-buried packet ontology lower end is fixedly connected
There are four equally distributed stabiliser bars, the locating rod and stabiliser bar outer end are fixedly connected to several fins, the locating rod,
Stabiliser bar and fin are all made of stainless steel material, facilitate pre-buried packet ontology is fixed on it is not easily shifted in soil, and then it is convenient after
Continuous positioning transplanting.
A kind of application method of the pre-buried packet of uranium contaminated soil multistage reparation, the application method specifically include following step
It is rapid:
S1, the topsoil for removing uranium contaminated soil 50-60cm, every square meter are laid with a pre-buried packet, are laid with and complete
Soil remediation layer is formed afterwards；
S2, polywater net is mounted above the soil remediation layer at 15-20cm, while will be between Heshui fiber and polywater net
It is fixed to each other；
S3, the electronic air bag inflation " hardening " of starting, start to backfill topsoil and tamp, locating rod exposes soil surface
10-20cm；
S4, to topsoil more than soil remediation layer by the way of man-made irrigation or natural rainfall, repair duration
1-2 after heavy metal content in soil is reduced to required value when soil remediation oxidant layer top, completes level-one reparation；
S5, desurfacing soil remove screw thread platform and are left pre-buried packet ontology and soil-repairing agent, in pre-buried packet ontology
Interior transplanting heavy metal accumulation plant, backfill topsoil, by heavy metal accumulation plant restrain oneself with excessive accumulaiton heavy metal uranium, repair
Multiple duration 2-3, completes second level reparation.
S6, after soil remediation oxidant layer top heavy metal content in soil is reduced to normal value, recycle the pre-buried packet and again
Metal enrichment plant completes the recycling of uranium pollutant.
Further, the heavy metal accumulation plant is Indian mustard or sunflower, and the polywater net uses superabsorbent water yarn
Line weaves, and the superabsorbent water yarn is spinned using superabsorbent fiber and polyester fiber, and Indian mustard or sunflower are equal
There is extremely strong repair ability to uranium contaminated soil, polywater net plays the role of assembling soil moisture, in superabsorbent water yarn
Superabsorbent fiber has extremely strong water absorbing capacity, and polyester fiber plays wear-resisting effect not easy to break.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) mode that this programme can be pre-buried by clear soil, is on the one hand shifted in soil by strict water guide net
A large amount of uranyl ions are actively rapidly gathered in pre-buried packet, repair convenient for carrying out fixed point, on the other hand pass through by uranyl ion
Special soil-repairing agent greatly improves the absorption and accumulation to uranyl ion, based on nanoporous characteristic promoted to uranyl from
The agglomerate of son is simultaneously filled in micropore and avoids pollution diffusion, the uranyl after active level-one reparation, in uranium contaminated soil
Ion is reduced to certain value, then passes through the second level reparation of natural style, i.e. it is organic to increase soil for heavy metal uranium enriching plant reparation
Matter content and soil fertility improve and maintain soll layer structure, lay heavily fortified point for direct utilize of the soil after uranium pollution amelioration
Real basis.
(2) soil-repairing agent include parts by weight be 30-40 part of organosilicon microorganism fertilizer, modification medical stone powder 20-30 parts,
5-20 parts of bentonite, 5-10 parts of natural zeolite, 5-10 parts of apatite, 3-15 parts of chelating agent.
(3) after organosilicon microorganism fertilizer is handled D. radiodurans body functionization by biosurfactant, with corruption
Ripe pig manure, corn stover mixing, are sufficiently mixed and uniformly carry out compost, aerobic fermentation, then mixed with the silicate after hydrolysis
Sufficiently dry powder processed afterwards, obtains fertilizer powder, then by fertilizer powder and polysiloxanes, platinum catalyst, dimethicone and orthosilicic acid
The molding that is heating and curing obtains gel solids after ethyl ester mixing, by gel solids be warming up to 400 DEG C -850 DEG C under an inert atmosphere into
Row pyrolysis obtains nanoporous repair materials, and the porosity of nanoporous repair materials is 80%-95%, aperture 1nm-
100nm, D. radiodurans belong to extreme microorganism, lure ionising radiation, ultraviolet light, drying, strong oxidizer and some chemistry
The lethal and mutation effect for becoming the various DNA damage media such as agent shows surprising resistance, is known as " most indomitable thin on the earth
Bacterium " can effectively realize the reparation of uranium pollution, while promote the agglomerate to uranyl ion based on nanoporous characteristic and be filled in
Diffusion is avoided pollution in micropore, in addition organosilicon microorganism fertilizer has the ability for restoring soil acid-base equilibrium, can be passivated a huge sum of money
Belong to the bioactivity of ion, organosilicon material is pollution-free to soil and ecology, can also improve soil.
(4) after modified medical stone powder calcines medical stone, initiator potassium persulfate is added and chitosan is stirred to react, then
Phytic acid is added at room temperature to be stirred to react, is finally ground into particle or powdered, using chitosan and the modified wheat meal of phytic acid
Masonry is removing heavy metals main component, and chitosan molecule is modified medical stone with functional groups such as hydroxyl and amino, with chitosan,
Under initiator potassium persulfate effect, it is connected to chitosan molecule on medical stone molecular surface, due to chitosan molecule surface
Containing a large amount of hydrogen bond, phytate molecule and chitosan molecule are be combined with each other by hydrogen bond, and phytate molecule is made firmly to be incorporated in wheat
On meal stone molecule, phytic acid has extremely strong complexing power to number metal ion big absolutely, and it is heavy that phytic acid produces bivalent metal ion
It forms sediment, phytate molecule is connected on medical stone molecule by chitosan molecule as intermediate well, greatly improves soil
The adsorption rate of heavy metal.
(5) screw thread platform inner end is provided with the controller of power supply, and controller is connected with temperature sensor, divides water cellulose inner end
Cutting has heating tube seat, heats and is equipped with heating wire in tube seat, and heating wire and controller are electrically connected, and D. radiodurans are most
Suitable growth temperature is 30 DEG C, and at 37 DEG C, the speed of growth is most fast, is remained at by controller for D. radiodurans and is most closed
Suitable growth temperature, and then improve the reparation speed and quality that D. radiodurans pollute uranium.
(6) Heshui fiber, transitional ball and divide water cellulose to be all made of super water-absorbent material to be made, super water-absorbent material uses macromolecule
Water-absorbing resin and water suction villus fiber are mixed according to the ratio of 1:1, and water suction villus fiber passes through polyacrylic acid modified laggard
Row spinning is made, and hydroscopic high-molecular resin partial size is 100-120mesh, and water suction villus fiber is soft, and fluffy degree is high, fiber it is thick and
Long, length is preferably 2.7-3.0mm, and fines content is low, and reticular fibre is uniform, and network pulling force is 7N or more, super water-absorbent material
With extremely strong water imbibition, moisture that can actively in " arresting " soil, and then complete the aggregation absorption of uranyl ion.
(7) deformed rod includes cylindrical electronic air bag, and electronic air bag and controller are electrically connected, electronic air bag outer end
It is enclosed with reinforcement nylon layer, reinforces nylon layer surface and is coated with corrosion-resistant finishes, the flexibility that deformed rod has shape changeable avoids
The phenomenon that fractureing during soil backfill, while also convenient transportation and embedded, reinforcing nylon layer, to play protection electronic
The effect of air bag, the case where avoiding its rupture generation.
(8) size of pre-buried packet ontology is 50*50*20cm, and pre-buried packet ontology lower end is fixedly connected with four and is uniformly distributed
Stabiliser bar, locating rod and stabiliser bar outer end be fixedly connected to several fins, and locating rod, stabiliser bar and fin are all made of stainless
Steel material facilitates and is fixed on pre-buried packet ontology not easily shifted in soil, and then subsequent positioning facilitated to transplant.
(9) heavy metal accumulation plant is Indian mustard or sunflower, and polywater net is woven using superabsorbent water yarn, superabsorbent
Water yarn is spinned using superabsorbent fiber and polyester fiber, and Indian mustard or sunflower are to uranium contaminated soil with extremely strong
Repair ability, polywater net plays the role of assembling soil moisture, and the superabsorbent fiber in superabsorbent water yarn has extremely strong
Water absorbing capacity, polyester fiber play wear-resisting effect not easy to break.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram when present invention forms repair layer；
Fig. 3 is the structural schematic diagram under reparation state of the present invention；
Fig. 4 is the structural schematic diagram that the present invention divides water cellulose part；
Fig. 5 is the structural schematic diagram under organosilicon microorganism fertilizer of the present invention absorption uranyl ionic condition.
Figure label explanation:
1 pre-buried packet ontology, 2 thread bush, 3 screw thread platforms, 4 deformed rods, 5 locating rods, 6 Heshui fibers, 7 stabiliser bars, 8 polywaters
Net, 9 points of water celluloses, 10 heating wire, 11 transitional balls.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected, can be mechanical connection, is also possible to be electrically connected, can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements, for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
Fig. 1 and Fig. 3, a kind of pre-buried packet of uranium contaminated soil multistage reparation are please referred to, pre-buried packet includes pre-buried packet ontology 1,
Pre-buried packet ontology 1 is semi-permeable membrane, and hydrone, nutriment, uranyl ion is allowed to pass through, and is filled with soil in pre-buried packet ontology 1
Renovation agent, pre-buried 1 upper end of packet ontology, which is dug, pilot hole, and pilot hole inner end wall is fixedly connected with thread bush 2,2 inner end of thread bush
It is threaded with screw thread platform 3, facilitates installing and dismounting, 3 center of screw thread platform, which is dug, connecting hole, is fixedly connected in connecting hole
Transitional ball 11 plays the role of moisture transfer, and 11 upper end of transitional ball is fixedly connected with deformed rod 4, and deformed rod 4 includes cylindrical
Electronic air bag, and electronic air bag and controller are electrically connected, electronic air bag outer end is enclosed with reinforcement nylon layer, reinforces nylon layer table
Face is coated with corrosion-resistant finishes, the flexibility that deformed rod 4 has shape changeable, avoids occurring fractureing during soil backfills
Phenomenon, while also convenient transportation and embedded, reinforce the case where nylon layer plays the role of the electronic air bag of protection, avoids its rupture hair
Raw, 4 upper end of deformed rod is fixedly connected with locating rod 5, plays positioning action, transition corresponding with pre-buried packet ontology 1 below
11 upper end of ball is fixedly connected with several Heshui fibers 6, and Heshui fiber 6 is distributed along 4 annular array of deformed rod, and 11 lower end of transitional ball is solid
Surely several points of water celluloses 9 are connected with, water cellulose 9 is divided uniformly to be plugged on soil-repairing agent inner end, it is equal for the moisture come will be absorbed
Even is transmitted in soil-repairing agent, completes to facilitate soil-repairing agent directly to repair, pre-buried packet the aggtegation of uranyl ion
The size of ontology 1 is 50*50*20cm, and pre-buried 1 lower end of packet ontology is fixedly connected with four equally distributed stabiliser bars 7, locating rod
5 and 7 outer end of stabiliser bar be fixedly connected to several fins, locating rod 5, stabiliser bar 7 and fin are all made of stainless steel material, convenient
Pre-buried packet ontology 1 is fixed on not easily shifted in soil, and then subsequent positioning is facilitated to transplant.
Soil-repairing agent includes that parts by weight are 30-40 parts of organosilicon microorganism fertilizer, are modified medical stone powder 20-30 parts, are swollen
Moisten 5-20 parts of soil, 5-10 parts of natural zeolite, 5-10 parts of apatite, 3-15 parts of chelating agent, organosilicon microorganism fertilizer passes through biological table
After face activating agent is to the processing of D. radiodurans body functionization, is mixed with rotted pig manure, corn stover, be sufficiently mixed uniform progress
Compost, aerobic fermentation, then powder processed is sufficiently dried after being mixed with the silicate after hydrolysis, fertilizer powder is obtained, then by fertilizer
The powder molding that is heating and curing after mixing with polysiloxanes, platinum catalyst, dimethicone and ethyl orthosilicate obtains gel solids, will
Gel solids are warming up to 400 DEG C -850 DEG C and are pyrolyzed to obtain nanoporous repair materials under an inert atmosphere, and nanoporous is repaired
The porosity of multiple material is 80%-95%, and aperture 1nm-100nm, D. radiodurans belong to extreme microorganism, to ionization spoke
Penetrate, ultraviolet light, drying, the various DNA damage media such as strong oxidizer and some chemical mutagens lethal and mutation effect show
Surprising resistance is known as " most indomitable bacterium on the earth ", the reparation of uranium pollution can be effectively realized, referring to Fig. 5, simultaneously
It promotes the agglomerate to uranyl ion based on nanoporous characteristic and is filled in micropore and avoid pollution diffusion, the in addition micro- life of organosilicon
Object fertilizer has the ability for restoring soil acid-base equilibrium, can be with the bioactivity of heavy metal-passivated ion, and organosilicon material is to soil
It is pollution-free with ecology, soil can also be improved.
After modified medical stone powder calcines medical stone, initiator potassium persulfate is added and chitosan is stirred to react, then in
Phytic acid is added at room temperature to be stirred to react, is finally ground into particle or powdered, using chitosan and the modified medical stone of phytic acid
As removing heavy metals main component, chitosan molecule is modified medical stone with functional groups such as hydroxyl and amino, with chitosan,
Under initiator potassium persulfate effect, it is connected to chitosan molecule on medical stone molecular surface, since chitosan molecule surface contains
There is a large amount of hydrogen bond, phytate molecule and chitosan molecule are be combined with each other by hydrogen bond, and phytate molecule is made firmly to be incorporated in wheat meal
On stone molecule, phytic acid has extremely strong complexing power to number metal ion big absolutely, and phytic acid produces precipitating to bivalent metal ion,
Phytate molecule is connected on medical stone molecule by chitosan molecule as intermediate well, greatly improves a soil huge sum of money
The adsorption rate of category.
Fig. 3-4 is please referred to, 3 inner end of screw thread platform is provided with the controller of power supply, and controller is connected with temperature sensor, point
9 inner end of water cellulose, which is dug, heating tube seat, heats and is equipped with heating wire 10 in tube seat, and heating wire 10 and controller are electrically connected,
The optimum growth temperature of D. radiodurans is 30 DEG C, and at 37 DEG C, the speed of growth is most fast, is radiation hardness surprise ball by controller
Bacterium remains at most suitable growth temperature, and then improves the reparation speed and quality that D. radiodurans pollute uranium.
Heshui fiber 6, transitional ball 11 and divide water cellulose 9 to be all made of super water-absorbent material to be made, super water-absorbent material uses high score
Sub- water-absorbing resin and water suction villus fiber are mixed according to the ratio of 1:1, and water suction villus fiber is by after polyacrylic acid modified
It carries out spinning to be made, hydroscopic high-molecular resin partial size is 100-120mesh, and water suction villus fiber is soft, and fluffy degree is high, and fiber is thick
And grow, length is preferably 2.7-3.0mm, and fines content is low, and reticular fibre is uniform, and network pulling force is 7N or more, super water-absorption material
Material has extremely strong water imbibition, moisture that can actively in " arresting " soil, and then completes the aggregation absorption of uranyl ion.
Referring to Fig. 2, a kind of application method of the pre-buried packet of uranium contaminated soil multistage reparation, application method specifically include with
Lower step:
S1, the topsoil for removing uranium contaminated soil 50-60cm, every square meter are laid with a pre-buried packet, shape after the completion of laying
At soil remediation layer；
S2, polywater net 8 is mounted above the soil remediation layer at 15-20cm, while will be between Heshui fiber 6 and polywater net 8
It is fixed to each other；
S3, the electronic air bag inflation " hardening " of starting, start to backfill topsoil and tamp, locating rod 5 exposes soil surface
10-20cm；
S4, to topsoil more than soil remediation layer by the way of man-made irrigation or natural rainfall, repair duration
1-2 after heavy metal content in soil is reduced to required value when soil remediation oxidant layer top, completes level-one reparation；
S5, desurfacing soil remove screw thread platform 3 and are left pre-buried packet ontology 1 and soil-repairing agent, in pre-buried packet sheet
Heavy metal accumulation plant is transplanted in body 1, is backfilled topsoil, is restrained oneself and excessive accumulaiton heavy metal by heavy metal accumulation plant
Uranium repairs duration 2-3, completes second level reparation, plant is interacted by the heavy metal in root exudates and soil, with blunt
The toxicity or migration for changing heavy metal, to reduce the diffusion of heavy metal pollution.
S6, after soil remediation oxidant layer top heavy metal content in soil is reduced to normal value, recycle pre-buried packet and heavy metal
Enriching plant completes the recycling of uranium pollutant.
Heavy metal accumulation plant is Indian mustard or sunflower, and polywater net 8 is woven using superabsorbent water yarn, superabsorbent water
Yarn is spinned using superabsorbent fiber and polyester fiber, and Indian mustard or sunflower are to uranium contaminated soil with extremely strong
Repair ability, polywater net 8 play the role of assembling soil moisture, and the superabsorbent fiber in superabsorbent water yarn has extremely strong suction
Outlet capacity, polyester fiber play wear-resisting effect not easy to break.
Embodiment 2:
Soil-repairing agent includes that parts by weight are 35 parts of organosilicon microorganism fertilizer, modified 25 parts of medical stone powder, bentonite 10
Part, 8 parts of natural zeolite, 8 parts of apatite, 10 parts of chelating agent, organosilicon microorganism fertilizer is by biosurfactant to radiation hardness
It after odd coccus body functionization processing, is mixed with rotted pig manure, corn stover, is sufficiently mixed and uniformly carries out compost, aerobic fermentation, then
Sufficiently dry powder processed, obtains fertilizer powder, then urges fertilizer powder and polysiloxanes, platinum after being mixed with the silicate after hydrolysis
The molding that is heating and curing after agent, dimethicone and ethyl orthosilicate mixing obtains gel solids, and gel solids are warming up to 600
It DEG C is pyrolyzed to obtain nanoporous repair materials under an inert atmosphere, the porosity of nanoporous repair materials is 80%-
95%, aperture 1nm-100nm, D. radiodurans belong to extreme microorganism, to ionising radiation, ultraviolet light, drying, Strong oxdiative
The lethal and mutation effect of the various DNA damage media such as agent and some chemical mutagens shows surprising resistance, is known as " the earth
On most indomitable bacterium ", the reparation of uranium pollution can be effectively realized, referring to Fig. 5, being promoted pair based on nanoporous characteristic simultaneously
The agglomerate of uranyl ion is simultaneously filled in micropore and avoids pollution diffusion, and in addition organosilicon microorganism fertilizer has that restore soil acid-base flat
The ability of weighing apparatus, can be with the bioactivity of heavy metal-passivated ion, and organosilicon material is pollution-free to soil and ecology, can also improve
Soil.
Rest part is consistent with embodiment 1.
Referring to Fig. 2, a kind of application method of the pre-buried packet of uranium contaminated soil multistage reparation, application method specifically include with
Lower step:
S1, the topsoil for removing uranium contaminated soil 50cm, every square meter are laid with a pre-buried packet, form soil after the completion of being laid with
Earth repair layer；
S2, polywater net 8 is mounted above the soil remediation layer at 15cm, while will be between Heshui fiber 6 and polywater net 8 mutually
It is fixed；
S3, the electronic air bag inflation " hardening " of starting, start to backfill topsoil and tamp, locating rod 5 exposes soil surface
15cm；
S4, to topsoil more than soil remediation layer by the way of man-made irrigation or natural rainfall, repair duration 1
Year, after heavy metal content in soil is reduced to required value when soil remediation oxidant layer top, complete level-one reparation；
S5, desurfacing soil remove screw thread platform 3 and are left pre-buried packet ontology 1 and soil-repairing agent, in pre-buried packet sheet
Heavy metal accumulation plant is transplanted in body 1, is backfilled topsoil, is restrained oneself and excessive accumulaiton heavy metal by heavy metal accumulation plant
Uranium is repaired duration 3 years, and second level reparation is completed, and plant is interacted by the heavy metal in root exudates and soil, with passivation
The toxicity or migration of heavy metal, to reduce the diffusion of heavy metal pollution.
S6, after soil remediation oxidant layer top heavy metal content in soil is reduced to normal value, recycle pre-buried packet and heavy metal
Enriching plant completes the recycling of uranium pollutant.
Embodiment 3:
Soil-repairing agent includes that parts by weight are 40 parts of organosilicon microorganism fertilizer, modified 30 parts of medical stone powder, bentonite 20
Part, 10 parts of natural zeolite, 10 parts of apatite, 15 parts of chelating agent, organosilicon microorganism fertilizer is by biosurfactant to resistance to spoke
It after penetrating odd coccus body functionization processing, is mixed with rotted pig manure, corn stover, is sufficiently mixed and uniformly carries out compost, aerobic fermentation,
Sufficiently dry powder processed, obtains fertilizer powder, then by fertilizer powder and polysiloxanes, platinum after being mixed again with the silicate after hydrolysis
The molding that is heating and curing after catalyst, dimethicone and ethyl orthosilicate mixing obtains gel solids, and gel solids are warming up to
850 DEG C are pyrolyzed to obtain nanoporous repair materials under an inert atmosphere, and the porosity of nanoporous repair materials is 80%-
95%, aperture 1nm-100nm, D. radiodurans belong to extreme microorganism, to ionising radiation, ultraviolet light, drying, Strong oxdiative
The lethal and mutation effect of the various DNA damage media such as agent and some chemical mutagens shows surprising resistance, is known as " the earth
On most indomitable bacterium ", the reparation of uranium pollution can be effectively realized, referring to Fig. 5, being promoted pair based on nanoporous characteristic simultaneously
The agglomerate of uranyl ion is simultaneously filled in micropore and avoids pollution diffusion, and in addition organosilicon microorganism fertilizer has that restore soil acid-base flat
The ability of weighing apparatus, can be with the bioactivity of heavy metal-passivated ion, and organosilicon material is pollution-free to soil and ecology, can also improve
Soil.
Referring to Fig. 2, a kind of application method of the pre-buried packet of uranium contaminated soil multistage reparation, application method specifically include with
Lower step:
S1, the topsoil for removing uranium contaminated soil 60cm, every square meter are laid with a pre-buried packet, form soil after the completion of being laid with
Earth repair layer；
S2, polywater net 8 is mounted above the soil remediation layer at 20cm, while will be between Heshui fiber 6 and polywater net 8 mutually
It is fixed；
S3, the electronic air bag inflation " hardening " of starting, start to backfill topsoil and tamp, locating rod 5 exposes soil surface
20cm；
S4, to topsoil more than soil remediation layer by the way of man-made irrigation or natural rainfall, repair duration 1
Year, after heavy metal content in soil is reduced to required value when soil remediation oxidant layer top, complete level-one reparation；
S5, desurfacing soil remove screw thread platform 3 and are left pre-buried packet ontology 1 and soil-repairing agent, in pre-buried packet sheet
Heavy metal accumulation plant is transplanted in body 1, is backfilled topsoil, is restrained oneself and excessive accumulaiton heavy metal by heavy metal accumulation plant
Uranium is repaired duration 2 years, and second level reparation is completed, and plant is interacted by the heavy metal in root exudates and soil, with passivation
The toxicity or migration of heavy metal, to reduce the diffusion of heavy metal pollution.
S6, after soil remediation oxidant layer top heavy metal content in soil is reduced to normal value, recycle pre-buried packet and heavy metal
Enriching plant completes the recycling of uranium pollutant.
Rest part is consistent with embodiment 1.
On the one hand the present invention can shift the uranyl in soil by strict water guide net by clear native pre-buried mode
A large amount of uranyl ions are actively rapidly gathered in pre-buried packet, are repaired convenient for carrying out fixed point, on the other hand by special by ion
Soil-repairing agent greatly improve the absorption and accumulation to uranyl ion, promoted based on nanoporous characteristic to uranyl ion
Agglomerate is simultaneously filled in micropore and avoids pollution diffusion, the uranyl ion after being repaired by active level-one, in uranium contaminated soil
It is reduced to certain value, then passes through the second level reparation of natural style, is i.e. heavy metal uranium enriching plant reparation increases the soil organism and contains
Amount and soil fertility improve and maintain soll layer structure, for the direct solid using laying of the soil after uranium pollution amelioration
Basis.
The foregoing is intended to be a preferred embodiment of the present invention；But scope of protection of the present invention is not limited thereto.
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of pre-buried packet of uranium contaminated soil multistage reparation, it is characterised in that: the pre-buried packet includes pre-buried packet ontology (1),
Soil-repairing agent is filled in the pre-buried packet ontology (1), pre-buried packet ontology (1) upper end, which is dug, pilot hole, the dress
Distribution inner end wall is fixedly connected with thread bush (2), and thread bush (2) inner end is threaded with screw thread platform (3), the screw thread platform
(3) center, which is dug, connecting hole, is fixedly connected in the connecting hole transitional ball (11), transitional ball (11) upper end is solid
Surely it is connected with deformed rod (4), deformed rod (4) upper end is fixedly connected with locating rod (5), and transitional ball (11) upper end is fixed
Several Heshui fibers (6) are connected with, the Heshui fiber (6) is distributed along deformed rod (4) annular array, under the transitional ball (11)
End is fixedly connected with several points of water celluloses (9), described that water cellulose (9) is divided uniformly to be plugged on soil-repairing agent inner end.
2. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the soil is repaired
Multiple agent include parts by weight be 30-40 part of organosilicon microorganism fertilizer, it is medical stone powder 20-30 parts modified, 5-20 parts of bentonite, natural
5-10 parts of zeolite, 5-10 parts of apatite, 3-15 parts of chelating agent.
3. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the organosilicon
It is mixed with rotted pig manure, corn stover after microorganism fertilizer is handled D. radiodurans body functionization by biosurfactant
It closes, is sufficiently mixed and uniformly carries out compost, aerobic fermentation, then sufficiently dry powder processed after being mixed with the silicate after hydrolysis, obtain
To fertilizer powder, heated after then mixing the fertilizer powder with polysiloxanes, platinum catalyst, dimethicone and ethyl orthosilicate
Curing molding obtains gel solids, and the gel solids are warming up to 400 DEG C -850 DEG C and are pyrolyzed to obtain under an inert atmosphere
The nanoporous repair materials, the porosity of the nanoporous repair materials are 80%-95%, aperture 1nm-100nm.
4. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the modified wheat
After meal mountain flour calcines medical stone, initiator potassium persulfate is added and chitosan is stirred to react, phytic acid is then added at room temperature
It is stirred to react, is finally ground into particle or powdered.
5. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the screw thread platform
(3) inner end is provided with the controller of power supply, and the controller is connected with temperature sensor, described that water cellulose (9) inner end is divided to open
It is carved with heating tube seat, is equipped with heating wire (10) in the heating tube seat, the heating wire (10) and controller are electrically connected.
6. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the Heshui is fine
Dimension (6), transitional ball (11) and divide water cellulose (9) to be all made of super water-absorbent material to be made, the super water-absorbent material is using macromolecule suction
Water-resin and water suction villus fiber be mixed according to the ratio of 1:1, the water suction villus fiber pass through it is polyacrylic acid modified after
It carries out spinning to be made, the hydroscopic high-molecular resin partial size is 100-120mesh, and the water suction villus fiber is soft, fluffy degree
Height, fiber is thick and grows, and length is preferably 2.7-3.0mm, and fines content is low, and reticular fibre is uniform, and network pulling force is 7N or more.
7. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the deformed rod
It (4) include cylindrical electronic air bag, and electronic air bag and controller are electrically connected, the electronic air bag outer end is enclosed with reinforcement
Nylon layer, the reinforcement nylon layer surface are coated with corrosion-resistant finishes.
8. a kind of pre-buried packet of uranium contaminated soil multistage reparation according to claim 1, it is characterised in that: the pre-buried packet
The size of ontology (1) is 50*50*20cm, and pre-buried packet ontology (1) lower end is fixedly connected with four equally distributed stabiliser bars
(7), the locating rod (5) and stabiliser bar (7) outer end are fixedly connected to several fins, the locating rod (5), stabiliser bar (7)
Stainless steel material is all made of with fin.
9. the application method of -8 any a kind of pre-buried packets of uranium contaminated soil multistage reparation according to claim 1, special
Sign is: the application method specifically includes the following steps:
S1, the topsoil for removing uranium contaminated soil 50-60cm, every square meter are laid with a pre-buried packet, shape after the completion of laying
At soil remediation layer；
S2, polywater net (8) are mounted at 15-20cm above the soil remediation layer, while by Heshui fiber (6) and polywater net
(8) it is fixed to each other between；
S3, the electronic air bag inflation " hardening " of starting, start to backfill topsoil and tamp, locating rod (5) exposes soil surface 10-
20cm；
S4, to topsoil more than soil remediation layer by the way of man-made irrigation or natural rainfall, repair duration 1-2
Year, after heavy metal content in soil is reduced to required value when soil remediation oxidant layer top, complete level-one reparation；
S5, it is cut the earth downwards according to the position of locating rod (5), removes screw thread platform (3) and be left pre-buried packet ontology (1) and soil-repairing agent
, heavy metal accumulation plant is transplanted in pre-buried packet ontology (1), is backfilled topsoil, is restrained oneself by heavy metal accumulation plant
With excessive accumulaiton heavy metal uranium, duration 2-3 is repaired, completes second level reparation.
S6, after soil remediation oxidant layer top heavy metal content in soil is reduced to normal value, recycle the pre-buried packet and heavy metal
Enriching plant completes the recycling of uranium pollutant.
10. a kind of application method of pre-buried packet of uranium contaminated soil multistage reparation according to claim 9, feature exist
In: the heavy metal accumulation plant is Indian mustard or sunflower, and the polywater net (8) is woven using superabsorbent water yarn,
The superabsorbent water yarn is spinned using superabsorbent fiber and polyester fiber.
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| CN111558614A (en) * | 2020-05-09 | 2020-08-21 | 周尚生 | Cultivated land restoration device based on microorganism restoration principle |
| CN111701995A (en) * | 2020-06-24 | 2020-09-25 | 深圳市中装城建工程有限公司 | Heavy metal soil deep two-stage type restoration and recovery method |
| CN111872109A (en) * | 2020-06-22 | 2020-11-03 | 达小莉 | Root-continuing type combined remediation method for heavy metal contaminated soil |
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| CN112170473A (en) * | 2020-09-04 | 2021-01-05 | 刘玉福 | Cold diffusion repairing rod based on organic contaminated soil |
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| CN112058908B (en) * | 2020-09-07 | 2021-11-30 | 西藏盈合工程技术服务有限公司 | But quick degradation environment-friendly soil remediation net |
| CN113056980A (en) * | 2021-01-05 | 2021-07-02 | 肖臣 | Replacement type rapid repair method for saline-alkali soil |
| CN113056980B (en) * | 2021-01-05 | 2022-05-06 | 大安市中科佰澳格霖农业发展有限公司 | Replacement type rapid repair method for saline-alkali soil |
| CN114289485A (en) * | 2021-11-24 | 2022-04-08 | 生态环境部南京环境科学研究所 | Method for remedying pollution of pesticide plant based on mountain and hill site conditions |
| CN114289485B (en) * | 2021-11-24 | 2023-01-13 | 生态环境部南京环境科学研究所 | Method for remedying pollution of pesticide plant based on mountain and hill site conditions |
| CN115818823A (en) * | 2022-11-22 | 2023-03-21 | 北京建筑大学 | Sewage remediation device and application |
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