CN105754605A - Treatment and repair particle and treatment and repair method for multiple heavy metal pollutants of soil - Google Patents
Treatment and repair particle and treatment and repair method for multiple heavy metal pollutants of soil Download PDFInfo
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- CN105754605A CN105754605A CN201610090778.5A CN201610090778A CN105754605A CN 105754605 A CN105754605 A CN 105754605A CN 201610090778 A CN201610090778 A CN 201610090778A CN 105754605 A CN105754605 A CN 105754605A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/10—Cements, e.g. Portland cement
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Abstract
The invention discloses a treatment and repair particle for multiple heavy metal pollutants of soil. The treatment and repair particle is mainly formed by mixing an oxide compound medicament and an inorganic cementing material. A treatment and repair method for the multiple heavy metal pollutants of the soil comprises the following concrete steps of (a) mixing the oxide compound medicament and the inorganic cementing material according to the mass ratio of 1:5 to 50; (b) vibrating through a vibrating screen to form particles with the particle size being 5 to 10mm after mixing; (c) sealing and packaging the screened particles through water-soluble capsules, heating the water-soluble capsules to enable the water-soluble capsules to melt and shrink locally, and then cooling to the room temperature. The treatment and repair particle and the treatment and repair method provided by the invention has the efficacy of no toxicity, no residue, no teratogenicity, no mutation, no secondary pollution, and multiple functions. The method provided by the invention is simple and time and labor saving to operate, does not break original planting habits of farmers, is not affected by soil environment, soil desertification, PH value and weather conditions, and is stronger in practicability. The particle and the method balance both economic benefit and environment benefit, and can be fully applied in various heavy metal pollution soil treatment and repair in large scale.
Description
Technical field
The present invention is that the process of a kind of soil various heavy pollutant is repaired particle and processes restorative procedure, belongs to agricultural soil
Treatment process field.
Background technology
In recent years, owing to population increases, industry fast development, solid waste is constantly stacked to soil surface and topples over, harmful
Waste water constantly permeates in soil, and the waste gas of motor vehicle emission, pernicious gas and floating dust in air constantly drop to soil with rainwater
In earth.The raising of agriculture chemistry level, makes a large amount of chemical fertilizer and fallout of pesticide in environment, causes soil to suffer non-point source
The chance polluted gets more and more, and its degree is the most increasingly severe；Under the influence of soil erosion and eolian erosion etc., pollute face
Long-pending constantly expansion.
China in 2010 by organic matter and heavy metal pollution cultivated area nearly 20,000,000 hectares (200,000 square kilometres) currently
Rise year by year；The land area of use organic agricultural chemicals is more than 2.8 hundred million hectares (2,800,000 square kilometres) every year, soil pollution
Make National Agricultural grain drop in production more than 13,000,000 tons, because of agricultural chemicals and Organic Pollution, radioactive pollution, pathogen contamination etc.
The economic loss that other kinds of pollution is caused is difficult to estimate.Therefore, every obstruction soil normal function, reduces crops
Yield and quality, be all called soil pollutant by the material of the remote-effects health such as grain, veterinary antibiotics.
When harmful substance is too much in soil, exceedes the self-purification capacity of soil, cause composition of the soil, 26S Proteasome Structure and Function to become
Change；Microbial activities is suppressed, and harmful substance or its catabolite gradually accumulate in soil, by " soil → plant
→ human body ", or be indirectly absorbed by the body by " soil → water → human body ", reach the degree being detrimental to health, it is simply that
Soil pollution.
Soil is listed as three big key elements of human environment with air and water, and almost all of pollution all can enter soil.China
Soil pollution situation has had influence on the healthy of farmland quality, food security even people, and the most serious is exactly a huge sum of money
Belong to and polluting.
People generally by density more than 4.5 grams/cc, the atomic weight metal more than 55, referred to as heavy metal, and from environment
The heavy metal that pollution aspect is said specifically includes that mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and metalloid arsenic (As) etc.
The significant element of bio-toxicity, and have the elements such as the zinc (Zn) of certain toxicity, copper (Cu), nickel (Ni)；They essentially from
Agricultural chemicals, waste water, mud and atmospheric sedimentation etc., if mercury is essentially from mercury-containing waste water, cadmium, lead contamination are essentially from smelting discharge
Settling with automobile exhaust gas, arsenic is then widely used as insecticide, bactericide, rat poison and herbicide etc..
Sewage irrigation refers generally to use through certain farmland, urban wastewater irrigation, forest and meadow processed.Municipal sewage includes
Sanitary sewage, business sewage and industrial wastewater.Due to developing rapidly of city industrialization, substantial amounts of industrial wastewater pours in river
Road, makes the many heavy metal ion contained in municipal sewage, enters soil along with sewage irrigation.Sewage irrigation in recent years is
Becoming the important component part of agricultural irrigation water, from the sixties so far, sewage irrigation area expands rapidly in China, and dirty filling is led
Cause the increase of heavy metal content in soil, and accumulation increases year by year.
China is by nearly 20,000,000 hectares of the cultivated area of the heavy metal pollutions such as cadmium, arsenic, chromium, lead at present, accounts for total cultivated area
1/5th, the whole nation annual because of heavy metal pollution more than 1,000 ten thousand tons of underproduction grain.The soil of heavy metals exceeding standard, naked eyes are seen
The most out, generally require by detection soil quality and the impact on human and livestock health situation just can determine that.The pollution of soil is also
Will not automatically terminate, even if spending millions upon millions of years, it the most stably exists, the special character of this heavy metal pollution just.
Soil remediation: refer to use physics, chemical or biological method to fix, shift, absorb, degrade or convert place soil
In pollutant so that it is content is reduced to acceptable level, or poisonous and hazardous pollutant is converted into the mistake of innocuous substance
Journey.Restorative procedure is divided into again in-situ immobilization and showering two kinds.Showering relates to cutting the earth and muck haulage, not only can destroy former
The soil texture come, the problem that also can there is secondary pollution.
At present, the technology of repairing polluted soil mainly includes the most several:
Phytoremediation.The ideal original position soil Treatment process being well recognized as, but there is obvious shortcoming: plant is short
Little, biomass is relatively low, the speed of growth is slow, growth cycle is long；Phytoremediation is also by soil types, temperature, humidity and battalion
Support etc. environmental condition limit.The time of phytoremediation needs 3～5 years, it is meant that the time of falling into disuse of soil is exactly 3～5
Year, affect economic benefit.It addition, phytoremediation is relatively costly, every cube of soil reaches about 200 yuan, every mu of soil
Rehabilitation expense is up to 8～100,000 yuan.High cost be local government and peasant the most unaffordable.
Chemical leaching method.After using chemical agent such as surfactant, mordant etc. to be leached out by the heavy metal in soil again
Carry out waste water process.This method not only cost is the highest, far above phytoremediation, and by new pollutant such as surface
Activating agent, mordant etc. bring soil into, and the physical arrangement of soil can be greatly affected.Become new pollution sources.
Soil moved in improve the original method.By buried for contaminated soil original place more than one meter or dig out and transport, then the backfilling new soil by cleaning；For greatly
The reparation of area contaminated soil not only needs substantial amounts of human and material resources, financial resources；Repair one mu of contaminated land in this way to want
Spend unit up to a million, and the source of clean soil is also difficult to ensure.It addition, soil moved in improve the original method is easily destroyed soil texture, cause
Soil fertility and micro-ecological environment decline, and the contaminated soil transferring to lower floor easilys lead to organic matter and heavy metal
Release, transitions into underground water, causes new underground water pollution.
Microorganism elution method.By adding the microorganism species that organic matter and heavy metal are had enrichment in soil, will
Organic matter and heavy metal are washed out.This mode not only cost is high, and microbial inoculum consumption is big, for large-area soil
It is difficult to collect due to microorganism leacheate for earth pollution, is actually difficult to operation.
Electrochemical process.Make water-soluble heavy metal ion enrichment to cathode surface by the function of current in soil.This skill at present
Art is simply groped in laboratory.Owing to function of current distance is the least, and actual contaminated land area is too big, this skill
Art is difficult to carry out in engineering, and no matter its high running cost is difficult to bear.
In sum, how to develop practicable, apply to soil various heavy pollute integrated treatment restorative procedure and
Technology, has become as following soil pollution and processes the new problem repairing and controlling to be faced.
Summary of the invention
The present invention is directed to the process of current heavy metal pollution of soil repair present in cost is high, toxicity big, easily residual, be suitable for
Scope is little, operation is complicated, cause the problem such as secondary pollution and destruction soil microenvironment, one kind of multiple heavy metals of invention
The chemical in situ of contaminated soil fixes the process reparation of the soil various heavy pollutant of oxidation and microbial association process reparation
Particle and process restorative procedure.
The purpose of the present invention implements by the following technical programs:
Particle is repaired in the process of a kind of soil various heavy pollutant, and its composition is mainly aoxidized composite drug with inorganic by one
Binder Materials mixes, and specifically includes:
Step a, oxidation composite drug mix according to the ratio of mass fraction 1:5-50 with inorganic coagulation material；
The particle diameter particle at 5-10mm is formed through vibratory sieve vibrations after step b, mixing；
Step c, the particle filtered out is packed by water-soluble capsule, and the heating of described water-soluble capsule is made described water-soluble
Property capsule occur local hot melt shrink, be cooled to normal temperature the most again.
Step b completes under vacuum conditions；Step c packs in the atmosphere of full ozone, and the atmosphere of ozone
For negative pressure；The particle that step b is formed is directly placed in the atmosphere of step c, makes the particle formed under vacuum environment, and it is internal empty
Gap will not contact with air ambient, and is directly entered in the subnormal ambient of ozone；Preferably, the negative pressure of described reduced pressure atmosphere is
0.7-0.95 atmospheric pressure, to reduce pressure-bearing property requirement to water-soluble capsule, i.e. wrap up through water-soluble capsule
Grain, the outside of its outside water-soluble capsule, to being internally formed the pressure differential of 0.3-0.05 atmospheric pressure, makes water-soluble capsule exist
Still internal particle can be had the effect of pretightning force after cooling, while ensureing that particle compacts, it can also be ensured that water-soluble
Property capsule ozone molecule will not escape out, water-soluble capsule meet water dissolve after formed local failure, in water solubility
Under the suction-operated of capsule negative pressure, can quickly moisture be sucked inside water-soluble capsule, promote within water-soluble capsule
Ozone molecule is quickly combined with hydrone, prevents ozone molecule from escaping in air, so that ozone plays work more fully
With, the activated bacterial being dissolved in water is aoxidized；Most preferably, its most preferred mode should be 0.9 atmospheric pressure.
Described oxidation composite drug is: potassium ferrate, chlorine dioxide, sodium peroxide, any one or more of sodium peroxydisulfate
Mixing.
Described oxidation composite drug is powder, and the granularity of powder is at least 300 mesh.
Described inorganic coagulation material is powder air-setting and hydraulicity inorganic coagulation material, and inorganic gel materials is selected from zeolite or water
Any one or more mixing of mud.
The manufacture method processing reparation particle of soil various heavy pollutant, will oxidation composite drug powder and inorganic gel
Material powder proportionally mixes, and forms granular mixture with mixer stirring in vacuum environment, is then passed through vibration
The particle of particle diameter 5-10mm is sifted out by sieve；Then be sent directly in the subnormal ambient of full ozone, and by the particle that filters out by
Water-soluble capsule packs.
Further, during particle sifts out, arranging 2 layers of screen cloth on the vibrating, wherein ground floor screen cloth is positioned at
Portion, and horizontal positioned, second layer screen cloth is positioned at bottom, and tilts the placement of 10-15 degree, the wherein sieve aperture of ground floor screen cloth
A diameter of 10-15mm, the sieve diameter of second layer screen cloth is 5-10mm；Or,
Described second layer screen cloth is set to funnel-shaped structure, and bottom surface is provided with the sieve aperture of a diameter of 5-10mm, in the bottom of funnel
Discharging is also collected；
It is further preferred that described second layer screen cloth is connected with vibrating device, second layer screen cloth is made to vibrate blanking；
Preferably, second layer screen cloth is connected with collection device.
Use described soil various heavy pollutant processes the process restorative procedure repairing particle, including:
Step one, by described process to repair evengranular spread fertilizer over the fields on soil layer surface, then utilize rotary tillage equipment to plough deeply soil
Layer, makes process repair particle and is fully contacted with polluted soil, and detect soil moisture content, unrestrained according to using with aqueous condition
Filling, sprinkling irrigation, drip irrigation, the mode such as spread manuer in holes pour into a mould aqueous solution of chlorine dioxide in soil layer；
Step 2, step one complete after 48h in 15 days, spread fertilizer over the fields by filling the answering of water-soluble capsule in the soil after processing
Conjunction microbial manure and complex microorganism bacterium solution, and detect the water content of the deep upper soll layer of 15cm, if water content is less than 15%, then
Watering after making its water content reach 15%, plowed soils makes composite microbiological fertilizer and complex microorganism bacterium solution be sufficiently mixed with soil
Contact, if water content is higher than 15%, directly plowed soils makes composite microbiological fertilizer and complex microorganism bacterium solution the most mixed with soil
Splice grafting touches, and plays the effect persistently repairing polluted soil.
Described composite microbiological fertilizer, be undergo microbial fermentation become thoroughly decomposed farm manure, ight soil, natural pond (algae) slag, Chinese medicine
Any one or more mixing in slag, vinasse, crop material, vegetables and fruits rubbish or swill；
Described complex microorganism bacterium solution, is to be mixed by one or more inoculation EM bacterium of water, soya bean, dregs of beans or vegetable and fruit etc.
Close zymotic fluid.
When operating procedure one, step 2, it is desirable to 24h ground temperature is between-5 DEG C-45 DEG C；Winter, northern area was in operating procedure two
, first with high temperature service, upper soll layer is heated before, make the temperature of upper soll layer be at least up to 40 degrees Celsius, and hold
At least 10 minutes continuous time.So can promote that in soil, the oxidation composite drug of residual decomposes volatilization further, protects further
Card step 2 will not residual oxidization composite drug when carrying out, it is to avoid do composite microbiological fertilizer and composite microbial bacteria liquid oxidation
Disturb.
The present invention provide process repair particle and process restorative procedure, do not break original planting habit, not by soil environment,
The impact of soil desertification, pH value and weather conditions, practicality is higher.
The process that the present invention provides is repaired particle and processes restorative procedure, has nonhazardous, noresidue, causes without teratogenesis, nothing
Cancer, without mutagenesis, non-secondary pollution, effect of a fado.The present invention is simple to operate, time saving and energy saving, does not break peasant
Original planting habit, not affected by soil environment, soil desertification, pH value and weather conditions, practicality is higher.This
Bright take into account economy and environmental benefit, repair can have been processed with large-area applications in various heavy contaminated soil, to many
Heavy metal species carries out in-situ solidifying, reduces heavy metal and conducts the possibility of the bottom to food chain, it is ensured that the safety of long-term cropping
Not by heavy metal pollution；Secondary pollution will not be brought, it is ensured that the sustainability of soil uses during processing；The most originally
The technical scheme of invention also has killing action to the spore of the pest and disease damage in soil, plays the effect achieved many things at one stroke.
Detailed description of the invention
Embodiment one
Particle is repaired in the process of soil various heavy pollutant described in the embodiment of the present invention one, and its composition is mainly aoxidized by one
Composite drug and inorganic coagulation material composition, wherein said oxidation composite drug is: potassium ferrate, chlorine dioxide, peroxidating
The multiple mixing of the oxidant such as sodium, sodium peroxydisulfate；Inorganic coagulation material is powder air-setting or hydraulicity inorganic gel material
Material.Described oxidation composite drug mixes according to the ratio of mass fraction 1:5 with inorganic coagulation material, at the environment of vacuum after mixing
Under, form particle diameter at the particle of 5mm through vibratory sieve vibrations, then in the reduced pressure atmosphere of full ozone, by filter out
Grain is packed by water-soluble capsule and makes the heating of described water-soluble capsule described water-soluble capsule to occur local hot melt to shrink,
It is cooled to normal temperature the most again.Making the particle formed under vacuum environment, its internal voids will not contact with air ambient, and direct
Enter in the subnormal ambient of ozone.
Preferably, the negative pressure of described reduced pressure atmosphere is 0.7-0.95 atmospheric pressure, wants the pressure-bearing property of water-soluble capsule with reduction
Asking, i.e. at the particle wrapped up through water-soluble capsule, the outside of its outside water-soluble capsule is to being internally formed 0.3-0.05
The pressure differential of atmospheric pressure, makes water-soluble capsule the most still can have the effect of pretightning force to internal particle, is ensureing
While particle compacts, it can also be ensured that the ozone molecule within water-soluble capsule will not escape out, meet at water-soluble capsule
Water forms local failure after dissolving, and under the suction-operated of water-soluble capsule internal negative pressure, quickly moisture can be sucked water solubility
Capsule, promotes that the ozone molecule within water-soluble capsule is quickly combined with hydrone, prevents ozone molecule from escaping into air
In, so that ozone plays a role more fully, the activated bacterial being dissolved in water is aoxidized；The negative pressure of atmosphere is too low
Time, the outer surface of the particle of water-soluble capsule parcel will bear bigger pressure, be easily caused the destruction of water-soluble capsule, its
Most preferably mode should be 0.9 atmospheric pressure, but uses 0.7 atmospheric pressure, 0.8 atmospheric pressure, 0.95 atmospheric pressure also
The most feasible, the particle that so water-soluble capsule can be made to wrap up is more compact, simultaneously also will not be due to the inside and outside differential pressure of water-soluble capsule
Excessive and cause rupturing；When water-soluble capsule is being met after water is dissolved in soil, smelly included in the internal voids of particle
Oxygen will discharge, and can be further ensured that completing of oxidation, and whole process does not produce new pollution.When negative pressure ring
When border is too low, the ozone amount not only resulting in particle absorbed inside is very few, also results in the encapsulation difficulty of water-soluble capsule more
Greatly.
Described oxidation composite drug is powder, and the granularity of powder is 300 mesh.
Described inorganic gel materials is selected from zeolite and the mixing of cement, and mixed proportion is 1:1.
Embodiment two
Particle is repaired in the process of soil various heavy pollutant described in the embodiment of the present invention two, its different from embodiment one it
Place is, its composition is mainly made up of one oxidation composite drug and inorganic coagulation material, and wherein said oxidation composite drug is:
The multiple mixing of the oxidants such as potassium ferrate, chlorine dioxide, sodium peroxide, sodium peroxydisulfate；Wherein said inorganic coagulation material
For powder air-setting or hydraulicity inorganic coagulation material, described oxidation composite drug and inorganic coagulation material are according to mass fraction
The ratio mixing of 1:20, forms particle diameter at the particle of 6mm through vibratory sieve vibrations after mixing, then by the particle that filters out by water
Dissolubility capsule is packed.
Described inorganic gel materials is selected from zeolite or cement.
Described oxidation composite drug is powder, and the granularity of powder is 400 mesh.
Embodiment three
Particle is repaired in the process of soil various heavy pollutant described in the embodiment of the present invention three, its different from embodiment one it
Place is, its composition is mainly made up of one oxidation composite drug and inorganic coagulation material, and wherein said oxidation composite drug is:
The multiple mixing of the oxidants such as potassium ferrate, chlorine dioxide, sodium peroxide, sodium peroxydisulfate；Described inorganic coagulation material is powder
Powder air-setting or hydraulicity inorganic coagulation material, described potassium ferrate and inorganic coagulation material are according to the ratio of mass fraction 1:40
Example mixes, and forms particle diameter at the particle of 8mm through vibratory sieve vibrations after mixing, then by the particle that filters out by water-soluble capsule
Packaging.
Described inorganic gel materials is preferably gypsum powder.
Described oxidation composite drug is powder, and the granularity of powder is 350 mesh.
Embodiment four
Particle is repaired in the process of soil various heavy pollutant described in the embodiment of the present invention three, its different from embodiment one it
Place is, its composition is mainly made up of one oxidation composite drug and inorganic coagulation material, and wherein said oxidation composite drug is:
The multiple mixing of the oxidants such as potassium ferrate, chlorine dioxide, sodium peroxide, sodium peroxydisulfate；Described inorganic coagulation material is powder
Powder air-setting or hydraulicity inorganic coagulation material, described potassium ferrate and inorganic coagulation material are according to the ratio of mass fraction 1:50
Example mixes, and forms particle diameter at the particle of 10mm through vibratory sieve vibrations after mixing, then by the particle that filters out by water-soluble glue
Capsule is packed.
Described inorganic gel materials is preferably finished ground cement.
Described oxidation composite drug is powder, and the granularity of powder is 500 mesh.
Water-soluble capsule described in embodiment one to embodiment four refers to the capsule housing using water-soluble material to manufacture, and has hydrophilic
Property, meet water and dissolve.
Embodiment five
The manufacture method processing reparation particle of soil various heavy pollutant described in embodiment one to embodiment four, will oxidation
Composite drug powder and inorganic coagulation material powder proportionally mix, and form granular mixture with mixer stirring, so
After through vibratory sieve, the particle of particle diameter 5 10mm is sifted out, and on film packaging machine by the particle that filters out by water-soluble capsule
Packaging.
During particle sifts out, arranging 2 layers of screen cloth on the vibrating, wherein ground floor screen cloth is positioned at top, and level
Placing, second layer screen cloth is positioned at bottom, and tilts the placement of 10-15 degree, and wherein the sieve diameter of ground floor screen cloth is 10mm,
The sieve diameter of second layer screen cloth is 5mm, thus makes ground floor screen cloth all will sieve down less than the particle of 10mm particle diameter, second
Particle between 5mm-10mm particle diameter is collected by layer screen cloth by the compass screen surface tilted, and under sieving less than the particle of 10mm particle diameter.
Second layer screen cloth is connected with collection device.
Described second layer screen cloth is set to funnel-shaped structure, and bottom surface is provided with the sieve aperture of 5mm × 5mm, discharging in the bottom of funnel
And collected by described collection device, the particle from the mesh screen of funnel is reclaimed by other devices and is reloaded in mixer
Row stirring.
Described second layer screen cloth is connected with vibrating device, makes second layer screen cloth vibrate blanking, and further, when the second layer sieves
When net is funnel-shaped structure, the bottom of funnel is connected with collection device by flexible tubular structures, so that the vibration of second layer screen cloth exists
During carry out powder collection.
Embodiment six
The pollution of soil various heavy pollutant described in the embodiment of the present invention six processes restorative procedure, including:
Step one, described soil treatment is repaired and evengranular spreads fertilizer over the fields on soil layer surface, utilize rotary tillage equipment to plough deeply soil horizon
Make soil treatment repair particle to be fully contacted with polluted soil；And detect soil moisture content, according to specifically using regimen condition then
Soil is carried out flood irrigation, sprays, water, drip irrigation, spread manuer in holes, to soil layer surface casting aqueous solution of chlorine dioxide, play former
The effect of the fixing oxidation in position soil multiple diseases pollutant.Described aqueous solution of chlorine dioxide is saturated solution, uses chlorine dioxide water
Solution is possible not only to quickly be dissolved by the water-soluble film of soil remediation particle, makes the soil remediation particle can be with fast onset
Effect, owing to the half-life of oxidation composite drug itself is short, after fast onset oxidation, reaction generates carbon dioxide
Vapor away, secondary pollution will not be caused to soil.
After aqueous solution of chlorine dioxide is poured into a mould, promote to repair the oxidation composite drug powder in particle and external contact, and
Constantly ozone is discharged during its contact, make soil colloid no longer heavy metal composition have the effect of absorption, borrow
Helping the effect of the aqueous solution, heavy metal from the downward creep of upper soll layer, and then away from the root of long-term cropping, can reduce crop
By root absorption by Accumulation of heavy metals in fruit；After ozone discharges completely, repair other oxygen in particle
Chemical conversion point is spread under the dissolving of water, makes the adsorbing holding downward trend of soil colloid heavy metal composition, thus more has
Imitate makes the downward creep of heavy metal component.
The region that heavy metal dustiness is bigger, answers escalated dose to apply to repair particle, promotes the heavy metal component in soil to enter
The one downward creep of step, it is ensured that heavy metal component will not be absorbed by crop root and enter among crop and fruit.
Step 2, step one complete after 48h in 15 days, spread fertilizer over the fields the complex microorganism filling by water-soluble capsule in soil layer
Fertilizer and complex microorganism bacterium solution, and detect the water content of the deep upper soll layer of 15cm, if water content is less than 15%, rewaters and make it
After water content reaches 15%, plowed soils makes composite microbiological fertilizer and complex microorganism bacterium solution be sufficiently mixed with soil, if aqueous
Amount makes composite microbiological fertilizer and complex microorganism bacterium solution be sufficiently mixed with soil higher than 15% direct plowed soils, plays and continues
Repair the effect of polluted soil
Described composite microbiological fertilizer, be undergo microbial fermentation farm manure, ight soil, natural pond (algae) slag, Chinese medicine slag, wine
Any one or more mixing in grain, crop material, vegetables and fruits rubbish or swill.
Described complex microorganism bacterium solution, is to be mixed by one or more inoculation EM bacterium of water, soya bean, dregs of beans or vegetable and fruit etc.
Close zymotic fluid.
When operating procedure one, step 2, it is desirable to 24h ground temperature is between-5 DEG C-45 DEG C.
Upper soll layer, before operating procedure two, is first heated with high temperature service, makes upper soll layer by the north of china in winter time
Temperature is at least up to 40 degrees Celsius, and at least 10 minutes duration.So can promote that the oxidation in soil is multiple further
Close medicament to carry out decomposing, volatilizing, it is ensured that will not have oxidation composite drug residual when step 2 is carried out, it is to avoid to complex microorganism
Fertilizer and the interference oxidation of complex microorganism bacterium solution.
Water filling has worked and has uniformly spread fertilizer over the fields in the soil of Organic Pollution through filling the answering of water-soluble capsule in 15 days after 48h
Close microbial manure and complex microorganism bacterium solution, plough deeply soil horizon and make composite microbiological fertilizer and complex microorganism bacterium solution and soil
It is fully contacted；Persistently strengthen the reparation of polluted soil.Composite microbiological fertilizer usage amount is: 50g/ 5000g/
㎡；Complex microorganism bacterium solution usage amount is: 1g/ 50g/.
Sample analysis: disease contaminated soil processes to be repaired after 15 days, the harmful microorganism fall such as bacterium, fungi, virus, gemma
Low by 99.99%, beneficial microbe increases.Achieve the in-situ treatment reparation that soil disease pollutes, the soil environment matter after reparation
Amount meets the requirement of China's " standard of soil environment quality " (GB 15618-1995) secondary standard value.
When using process restorative procedure provided by the present invention to construct, 24h ground temperature in the range of 5 DEG C-35 DEG C, cloudy, cloudy,
Greasy weather is better.
The present invention has taken into account economy and environmental benefit, can process reparation work with large-area applications in various heavy contaminated soil
Make, various heavy is carried out in-situ solidifying, reduce heavy metal and conduct the possibility of the bottom to food chain, it is ensured that plantation is made
The safety of thing is not by heavy metal pollution；Secondary pollution will not be brought, it is ensured that the sustainability of soil makes during processing
With；Technical scheme also has killing action to the spore of the pest and disease damage in soil simultaneously, plays the merit achieved many things at one stroke
Effect.
The above, the only detailed description of the invention of the present invention, therefore, protection scope of the present invention should be with described claim
Protection domain be as the criterion.The above embodiment of the present invention is lifted and is only used to clearly demonstrate example of the present invention simultaneously,
And protection scope of the present invention is not limited thereto.Any those familiar with the art is on the basis of described above
On can also make the change of other multi-form, change or replace, cannot all of embodiment be given exhaustive here.
Every belong to that technical scheme extended out obviously change, change or replace still in the present invention and right
The row of the protection domain required.
Claims (10)
1. a particle is repaired in the process of soil various heavy pollutant, and its composition is mainly by one oxidation composite drug and nothing
Machine Binder Materials mixes, and specifically includes:
Step a, oxidation composite drug mix according to the ratio of mass fraction 1:5-50 with inorganic coagulation material；
The particle diameter particle at 5-10mm is formed through vibratory sieve vibrations after step b, mixing；
Step c, the particle filtered out is packed by water-soluble capsule, and the heating of described water-soluble capsule is made described water-soluble
Property capsule occur local hot melt shrink, be cooled to normal temperature the most again.
2. particle is repaired in the process of soil various heavy pollutant as claimed in claim 1, it is characterised in that step b
Complete under vacuum conditions；Step c packs in the atmosphere of full ozone, and the atmosphere of ozone is negative pressure；Step
The particle that rapid b is formed is directly placed in the atmosphere of step c, makes the particle formed under vacuum environment, and its internal voids will not be with sky
Compression ring border contacts, and is directly entered in the subnormal ambient of ozone；Preferably, the negative pressure of described reduced pressure atmosphere is 0.7-0.95
Atmospheric pressure, to reduce the pressure-bearing property requirement to water-soluble capsule, i.e. at the particle wrapped up through water-soluble capsule, its outside
The outside of water-soluble capsule, to being internally formed the pressure differential of 0.3-0.05 atmospheric pressure, makes water-soluble capsule the most still may be used
Internal particle to be had the effect of pretightning force, while ensureing that particle compacts, it can also be ensured that within water-soluble capsule
Ozone molecule will not escape out, and meets after water dissolves at water-soluble capsule and forms local failure, at water-soluble capsule internal negative pressure
Suction-operated under, can quickly moisture be sucked inside water-soluble capsule, promote ozone molecule within water-soluble capsule and water
Molecule quickly combines, and prevents ozone molecule from escaping in air, so that ozone plays a role more fully, to being dissolved in water
In activated bacterial aoxidize；Most preferably, its most preferred mode should be 0.9 atmospheric pressure.
3. particle is repaired in the process of soil various heavy pollutant as claimed in claim 1 or 2, it is characterised in that institute
Stating oxidation composite drug is: potassium ferrate, chlorine dioxide, sodium peroxide, any one or more mixing of sodium peroxydisulfate.
4. particle is repaired in the process of soil various heavy pollutant as claimed in claim 3, it is characterised in that described oxygen
Change composite drug is powder, and the granularity of powder is at least 300 mesh.
5. particle is repaired in the process of soil various heavy pollutant as claimed in claim 1 or 2, it is characterised in that institute
Stating inorganic coagulation material is powder air-setting and hydraulicity inorganic coagulation material, and inorganic gel materials is selected from zeolite or cement
Any one or more mixes.
6. the manufacture method processing reparation particle of soil various heavy pollutant, will oxidation composite drug powder and nothing
Machine cement powders proportionally mixes, and forms granular mixture, then warp with mixer stirring in vacuum environment
Cross vibratory sieve to be sifted out by the particle of particle diameter 5-10mm；Then it is sent directly in the subnormal ambient of full ozone, and will filter out
Particle is packed by water-soluble capsule.
7. the manufacture method processing reparation particle of soil various heavy pollutant as claimed in claim 6, its feature exists
In, further, during particle sifts out, 2 layers of screen cloth are set on the vibrating, wherein ground floor screen cloth is positioned at
Portion, and horizontal positioned, second layer screen cloth is positioned at bottom, and tilts the placement of 10-15 degree, the wherein sieve aperture of ground floor screen cloth
A diameter of 10-15mm, the sieve diameter of second layer screen cloth is 5-10mm；Or,
Described second layer screen cloth is set to funnel-shaped structure, and bottom surface is provided with the sieve aperture of a diameter of 5-10mm, in the bottom of funnel
Discharging is also collected；
It is further preferred that described second layer screen cloth is connected with vibrating device, second layer screen cloth is made to vibrate blanking；
Preferably, second layer screen cloth is connected with collection device.
8. use soil various heavy pollutant as claimed in claim 7 processes the process restorative procedure repairing particle,
Including:
Step one, described soil treatment is repaired and evengranular spreads fertilizer over the fields on soil layer surface, then utilize rotary tillage equipment to plough deeply soil
Earth layer, makes process repair particle and is fully contacted with polluted soil, and detect soil moisture content, unrestrained according to using with aqueous condition
Filling, sprinkling irrigation, drip irrigation, the mode such as spread manuer in holes pour into a mould aqueous solution of chlorine dioxide in soil layer；
Step 2, step one complete after 48h in 15 days, spread fertilizer over the fields by filling the answering of water-soluble capsule in the soil after processing
Conjunction microbial manure and complex microorganism bacterium solution, and detect the water content of the deep upper soll layer of 15cm, if water content is less than 15%, then
Watering after making its water content reach 15%, plowed soils makes composite microbiological fertilizer and complex microorganism bacterium solution be sufficiently mixed with soil
Contact, if water content is higher than 15%, directly plowed soils makes composite microbiological fertilizer and complex microorganism bacterium solution the most mixed with soil
Splice grafting touches, and plays the effect persistently repairing polluted soil.
9. the process restorative procedure processing reparation particle of soil various heavy pollutant as claimed in claim 8, it is special
Levy and be, described composite microbiological fertilizer, be undergo microbial fermentation become thoroughly decomposed farm manure, ight soil, natural pond (algae) slag, in
Any one or more mixing in the dregs of a decoction, vinasse, crop material, vegetables and fruits rubbish or swill；
Described complex microorganism bacterium solution, is to be mixed by one or more inoculation EM bacterium of water, soya bean, dregs of beans or vegetable and fruit etc.
Close zymotic fluid.
10. the process restorative procedure processing reparation particle of the soil various heavy pollutant as described in claim 7 to 9,
It is characterized in that, when operating procedure one, step 2, it is desirable to 24h ground temperature is between-5 DEG C-45 DEG C；Winter, northern area was behaviour
Before making step 2, first with high temperature service, upper soll layer is heated, make the temperature of upper soll layer be at least up to 40 Celsius
Degree, and at least 10 minutes duration.So can promote that in soil, the oxidation composite drug of residual divides further further
Solve volatilization, it is ensured that will not residual oxidization composite drug when step 2 is carried out, it is to avoid to composite microbiological fertilizer and complex microorganism
Bacterium solution oxidation interference.
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| CN201610090778.5A CN105754605A (en) | 2016-02-18 | 2016-02-18 | Treatment and repair particle and treatment and repair method for multiple heavy metal pollutants of soil |
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| CN201610090778.5A CN105754605A (en) | 2016-02-18 | 2016-02-18 | Treatment and repair particle and treatment and repair method for multiple heavy metal pollutants of soil |
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| CN107350284A (en) * | 2017-08-16 | 2017-11-17 | 航天凯天环保科技股份有限公司 | A kind of efficient restorative procedure of mercury contaminated soil |
| CN107569811A (en) * | 2017-08-16 | 2018-01-12 | 航天凯天环保科技股份有限公司 | A kind of method of mercurous dangerous waste residue Whote-wet method high-efficiency mercury removal |
| CN107646224A (en) * | 2016-07-25 | 2018-02-02 | 刘新虎 | A kind of soil fertilizer damage release method and agent for releasing |
| CN108372200A (en) * | 2018-03-27 | 2018-08-07 | 中交天航环保工程有限公司 | A kind of organic polluted soil chemical oxidation reparation adding method thereof |
| CN111744946A (en) * | 2020-07-02 | 2020-10-09 | 尹东 | Method for adjusting proportion of carbon, nitrogen and phosphorus in petroleum-polluted soil |
| CN113857232A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Microcapsule for soil remediation, preparation method thereof and soil remediation method |
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| CN113857232A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Microcapsule for soil remediation, preparation method thereof and soil remediation method |
| CN111744946A (en) * | 2020-07-02 | 2020-10-09 | 尹东 | Method for adjusting proportion of carbon, nitrogen and phosphorus in petroleum-polluted soil |
| CN111744946B (en) * | 2020-07-02 | 2022-06-07 | 尹东 | Method for adjusting proportion of carbon, nitrogen and phosphorus in petroleum-polluted soil |
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Application publication date: 20160713 |