CN110510793A - A kind of underground water cooperates with governing system and method with soil - Google Patents
A kind of underground water cooperates with governing system and method with soil Download PDFInfo
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- CN110510793A CN110510793A CN201910816793.7A CN201910816793A CN110510793A CN 110510793 A CN110510793 A CN 110510793A CN 201910816793 A CN201910816793 A CN 201910816793A CN 110510793 A CN110510793 A CN 110510793A
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- soil
- underground water
- water
- filtering
- mixing arrangement
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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
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Abstract
The present invention provides a kind of underground water, and governing system and method are cooperateed with soil, and the governing system includes sequentially connected filter element and soil remediation unit；The soil remediation unit includes sequentially connected first mixing arrangement, stripper plant, the second mixing arrangement and equipment for separating liquid from solid, is separately provided with transmission device between first mixing arrangement and stripper plant, between stripper plant and the second mixing arrangement and between the second mixing arrangement and equipment for separating liquid from solid.The collaboration governing system can not only be handled organic matter, the heavy metal in underground water, moreover it is possible to improve the Ca in soil using concentrated water after processing2+、Mg2+Concentration, and change the physicochemical property of soil；Underground water provided by the invention cooperates with that administering method is easy to operate, improvement amount is big and governance efficiency is high with soil, has important industrial application value.
Description
Technical field
The invention belongs to environmental technology field, it is related to a kind of system and method curbed environmental pollution, more particularly to a kind of
Underground water cooperates with governing system and method with soil.
Background technique
The reparation of soil and underground water has become the hot spot of the current research of environmental protection both at home and abroad.Soil is located in natural environment
Heart position, it as the basis of production and the important component of environmental element, carry in environment about 90% from each
The pollutant of aspect.In recent years, it is increasing into the pollutant in soil while modern industrial society is increasingly flourishing.Soil
Earth and underground water are to interact, is interactional, and soil is once contaminated, and will have a direct impact on crops, pollution therein
Object can also can not directly or indirectly estimate surface water and Groundwater formation secondary pollution to society, economic and zoology
Influence.
In the pollutant for causing underground water pollution, petroleum substance, benzene homologues, chlorinated organics etc. occupy very big ratio
Weight, these organic matters are mostly volatile organic matter, have toxicity and carcinogenicity, it has also become natural, society, Economic Sustainability
The restraining factors of development, currently, repairing the common method of underground water is aeration.205045840 U of CN discloses a kind of sun
Energy combined type pump-and-treat system groundwater remediation device, including solar components, pumped well, water injection well, gas-liquid separator, air pressure
Contracting machine, water pump, water pumper and tail gas treating unit, the device are handled in underground water by the method for gas phase extracting and gas-liquid separation
Volatile organism, but the heavy metal ion of polluted underground water can not be removed.
In the prior art in addition to being handled using the method for gas phase extracting the organic matter in underground water, there is also changes
Reduction method is learned, for example, 104016531 A of CN discloses the groundwater remediation method that a kind of iron anode coupling palladium chtalyst adds hydrogen, institute
Method is stated according to the characteristic of underground water, electrochemical techniques are combined with palladium chtalyst hydrogenating reduction, is pre-processed using iron anode single
The reduced sulfur and calcium ions and magnesium ions of palladium chtalyst reduction efficiency are influenced in first removal underground water, while persistently being generated palladium chtalyst reduction and being added
Hydrogen required for hydrogen improves the electronation efficiency to pollutant.But the restorative procedure is small to the treating capacity of underground water,
And be only capable of handling the organic matter in underground water, large-scale groundwater treatment can not be suitable for.
Only underground water is repaired without repairing to soil, it is difficult to fundamentally change asking for underground water pollution
It inscribes, many kinds of, the complicated components of volatile organic matter present in soil, existing soil restoring technology mainly has gas phase pumping
It mentions, Thermal desorption, cement kiln burn and landfill.But gas phase extraction technique long operational time, is unable to satisfy industrial pollution field in city
Ground demand leaved for development；It is pyrolyzed higher cost, can not be used to handle large batch of contaminated soil；It burns and the secondary dirt of Landfill
It is big to contaminate risk, higher cost and treating capacity is limited.
106799392 A of CN discloses a kind of organic matter soil restoring device, the compression including passing sequentially through pipeline connection
Machine, soil remediation case, film separation system, vacuum pump, condenser, organic matter collecting tank, the organic matter soil restoring device energy
Enough realize continuous feed, it is big to the treating capacity of contaminated soil, keep thermal desorption high-efficient using direct-fired mode；Using film point
Tail gas is handled from system, secondary pollution will not be generated.But the device reduced by only the content of organic matter in soil, can not
Improve the physicochemical property of soil.
In order to repair underground water and soil simultaneously, 108393345 A of CN discloses a kind of for contaminated soil and underground water
Integrated restorative procedure, include the following steps: S1, the plant of flourishing root system planted in contaminated soil, to plant at
It is excavated and is rolled after ripe, mix soil with plant；Reparation medicament is sprayed at the surface of contaminated soil by S2；S3,
Contaminated underground water is extracted out, is irrigated in the contaminated soil after medicament is repaired in sprinkling；S4 will repair medicament infiltration
As completed in contaminated soil and groundwater, contaminated soil is integrated with underground water to be repaired.The restorative procedure utilizes kind
The plant for planting well developed root system loosens soil soil property, to improve the seepage velocity for repairing medicament, but growth of green plants speed
Slowly, the repairing efficiency of the soil and underground water is longer for degree.
The shortcomings that based on above-mentioned technology, provide that a kind of processing speed is fast, and can with making the system for repairing Polluted Groundwater,
Have great importance for improving the ecological environment.
Summary of the invention
The purpose of the present invention is to provide a kind of underground water, and governing system and method are cooperateed with soil, and system is administered in the collaboration
System can not only be handled organic matter, the heavy metal in underground water, moreover it is possible to improve the Ca in soil using concentrated water after processing2 +、Mg2+Concentration, and change the physicochemical property of soil；Underground water provided by the invention cooperateed with soil administering method it is easy to operate,
Improvement amount is big and governance efficiency is high, has important industrial application value.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of underground water to cooperate with governing system with soil, the underground water and soil are assisted
It include sequentially connected filter element and soil remediation unit with governing system.
The soil remediation unit include sequentially connected first mixing arrangement, stripper plant, the second mixing arrangement and
Equipment for separating liquid from solid, between first mixing arrangement and stripper plant, between stripper plant and the second mixing arrangement and
Transmission device is separately provided between two mixing arrangements and equipment for separating liquid from solid.
The present invention makes underground water obtain preliminary treatment in filter element by the setting of filter element；By tentatively locating
Underground water after reason obtains " cooperateing with improvement " in soil remediation unit with soil, realizes controlling jointly for underground water and soil
Reason, improves governance efficiency and regulation effect.
Wherein, soil mixes in the first mixing arrangement with the underground water after preliminary treatment, then in stripper plant
It is stripped to remove the volatile organic matter in soil and water；By stripping treated slurry in the second mixing arrangement
It is mixed with auxiliary material, soil and water after being repaired after separation of solid and liquid, gained water can direct outlet or return filtering list
Member is filtered.
Underground water of the present invention cooperateed with soil governing system can fast and efficiently to the underground water for receiving pollution with
And soil carries out collaboration improvement, and easy to operate, equipment investment is low.
Preferably, the filter element includes sequentially connected husky filter device and film filter.
Filter element of the present invention includes husky filter device and film filter, wherein the setting of sand filter device can
The solid impurity in Polluted Groundwater is removed, damage of the solid impurity to filter membrane in film filter is prevented；Then, pass through
The setting of film filter enables the organic matter in Polluted Groundwater, heavy metal to adsorb, and makes high valence ion (Ca2+、
Mg2-And SO4 2-Plasma) it is enriched in filtering concentrated water.
Preferably, the film filter includes tubular membrane and/or plate membrane.Those skilled in the art can be according to live empty
Between reasonably select the type of film filter.
Preferably, the filter membrane in the film filter is made of functional layer and substrate layer, it is further preferred that described
Filter membrane is ultrafiltration membrane.
Preferably, the functional layer is electrospun fibers layer.
Preferably, the filter membrane in the film filter is the filter membrane being prepared using following preparation method, institute
Preparation method is stated to include the following steps:
(1) mixed matrix material, metal nanoparticle, bentonite, polymer, carboxymethyl cellulose and organic solvent,
After dispersion, electrostatic spinning liquid is obtained；
(2) electrospun fibers layer is covered on the surface of substrate layer using electrostatic spinning liquid obtained by step (1), is filtered
Film precursor；
(3) processing is modified to filtering film precursor obtained by step (2) using acid solution, obtains the filter membrane.
The present invention passes through framework material, metal nanoparticle, bentonite, polymer, carboxymethyl cellulose and organic molten
The electrostatic spinning liquid with positive charge that agent is prepared, and as subsequent modification can be improved obtained by electrostatic spinning it is fine
The specific surface area of dimension improves the absorption property of electrospun fibers, enable gained electrospun fibers preferably removably under
Organic pollutant and heavy metal ion in water.
Preferably, step (1) described framework material includes ZIF-8 and/or MOF-5.Wherein, the partial size of ZIF-8 and MOF-5
D50 is separately 50-100nm, such as can be 50nm, 60nm, 70nm, 80nm, 90nm or 100nm.
It is the ZIF-8 and/or MOF-5 of 50-100nm as framework material that the present invention, which selects partial size D50, when partial size is too small
When, the surface of framework material can be high, and it is easy to reunite, to influence dispersion effect of the framework material in electrospun fibers；Work as grain
When diameter is excessive, the particle volume of framework material is larger, is unfavorable for maintaining the quality stability of gained electrospun fibers.
Preferably, the Fe that step (1) described metal nanoparticle includes2O3, Fe or Fe3O4In any one or at least
Two kinds of combination, typical but non-limiting combination include Fe2O3With Fe3O4Combination, Fe and Fe3O4Combination or Fe2O3、Fe
With Fe3O4Combination, preferably Fe2O3With Fe3O4Combination, it is further preferred that the Fe2O3With Fe3O4Mass ratio be
(1-3): (1-3), wherein Fe2O3, Fe and Fe3O4Partial size D50 be separately 50-100nm, such as can be
50nm, 60nm, 70nm, 80nm, 90nm or 100nm.
The present invention selects partial size D50 for the Fe of 50-100nm2O3, Fe or Fe3O4As metal nanoparticle, when partial size mistake
Hour, the surface of metal nanoparticle can be high, and it is easy to reunite, to influence dispersion of the metal nanoparticle in electrospun fibers
Effect；When partial size is excessive, the particle volume of metal nanoparticle is larger, is unfavorable for maintaining the quality of gained electrospun fibers
Stability.
Metal nanoparticle of the present invention includes Fe2O3, Fe or Fe3O4In any one or at least two combination,
Wherein Fe3O4As magnetic-particle, charge capacity is provided for gained electrospun fibers during electrostatic spinning；Fe2O3And
Fe makes gained electrospun fibers provide bigger surface area for electrospun fibers after modification.
Preferably, step (1) described polymer include in polyacrylonitrile, polystyrene or polylactic acid any one or extremely
Few two kinds of combination, typical but non-limiting combination include the combination of polyacrylonitrile and polystyrene, polystyrene and poly- cream
The combination of acid, the combination or polyacrylonitrile of polyacrylonitrile and polylactic acid, the combination of polystyrene and polylactic acid.
Preferably, step (1) described organic solvent includes any in n,N-Dimethylformamide, chloroform or dehydrated alcohol
It is a kind of or at least two mixing, it is typical but non-limiting combination include n,N-Dimethylformamide and chloroform combination, chlorine
The imitative combination with dehydrated alcohol, the combination of n,N-Dimethylformamide and dehydrated alcohol or n,N-Dimethylformamide, chloroform with
The combination of dehydrated alcohol.
Preferably, step (1) framework material, metal nanoparticle, bentonite, polymer, carboxymethyl cellulose with
The mass ratio of organic solvent is (1-5): (1-5): (2-6): (2-8): (0.5-1): 100, such as can be 1:1:2:2:0.5:
100,1:2:3:4:0.6:100,1:3:3:3:0.7:100,2:3:4:7:0.7:100,4:5:5:7:0.9:100 or 5:5:6:8:
1:100 etc., preferably (3-5): (3-5): (4-6): (4-6): (0.8-1): 100.
Preferably, the parameter of step (2) described electrostatic spinning are as follows: spinning voltage 10-25kV, such as can be 10kV,
12kV, 15kV, 18kV, 20kV, 21kV, 24kV or 25kV；Receive distance 15-25cm, such as can be 15cm, 16cm, 17cm,
18cm, 19cm, 20cm, 21cm, 22cm, 23cm, 24cm or 25cm；30-50 DEG C of spinning temperature, for example, can be 30 DEG C, 32 DEG C,
35 DEG C, 38 DEG C, 40 DEG C, 42 DEG C, 45 DEG C, 48 DEG C or 50 DEG C；The flow velocity of electrostatic spinning liquid is 0.5-1mL/h, such as be can be
0.5mL/h, 0.6mL/h, 0.7mL/h, 0.8mL/h, 0.9mL/h or 1mL/h.
The present invention is configured by the parameter to electrostatic spinning, keeps the fiber filament of gained electrospun fibers uniform, matter
Amount meets ultrafiltration membrane demand.
Preferably, step (3) described acid solution includes HCl solution and/or H2SO4Solution, it is further preferred that described
H in acid solution+Concentration be 0.1-0.5mol/L, such as can be 0.1mol/L, 0.2mol/L, 0.3mol/L, 0.4mol/
L or 0.5mol/L.
Preferably, step (3) modification are as follows: filtering film precursor obtained by step (2) is immersed in acid solution
Middle 3-16h, such as can be 3h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 11h, 12h, 13h, 14h, 15h or 16h.The present invention is not
The volume for impregnating acid solution used is further limited, it is only necessary to be immersed in filtering film precursor in acid solution i.e.
It can.
Preferably, the substrate layer includes nonwoven layer, layer of polyethylene terephthalate (pet layer), polypropylene layer (PP
Layer) or polyethylene layer (PE layer) in any one or at least two combination, typical but non-limiting combination is including nonwoven
The combination of cloth and pet layer, non-woven fabrics and PP layers of combination, non-woven fabrics and PE layers of combination, pet layer and PP layers of combination, pet layer
With PE layers of combination, nonwoven layer, pet layer and PP layers of combination, nonwoven layer, the PP layers of combination with PE layers, pet layer, PP layer
Combination or nonwoven layer, pet layer with PE layers, PP layers with PE layers of combination.
Preferably, first mixing arrangement and the second mixing arrangement are separately the mixing with agitating device
Slot.The setting of agitating device can be improved mixed effect, solid-liquid contact area be improved, to accelerate to remain in soil absorption liquid
Organic matter and Ca2+、Mg2+And SO4 2-The efficiency of plasma.
Preferably, the stripper plant includes stripper and compressor matched with stripper.
Preferably, the equipment for separating liquid from solid is centrifuge.
Preferably, the transmission device is mashing pump.
Second aspect, the present invention provides underground water as described in relation to the first aspect to cooperate with governing system to administer underground with soil
The method of water and soil, described method includes following steps:
(1) filtering underground obtains filtering and produces water and filtering concentrated water；
(2) concentrated water is filtered obtained by mixed soil and step (1), stripping processing is carried out after leaching process to remove mixed slurry
In volatile organic matter, obtain stripping processing after slurry；
(3) slurry after mixing biomass charcoal, stripping processing obtained by diatomite and step (2) is governed after separation of solid and liquid
Soil and separation produce water afterwards.
Underground water is filtered in filter element, and filtering is obtained after film filter and produces water and filtering and concentrating,
In, it filters in concentrated water and is enriched the Ca for failing film2+、Mg2+、SO4 2-And partial organic substances.By the way that concentrated water and soil will be filtered
Mixing, using the structure of soil particle, enables soil to absorb and filter the Ca in concentrated water2+、Mg2+、SO4 2-And organic matter, and
Subsequent stripping processing can then remove the volatile organic matter in soil and filtering concentrated water；Slurry after resulting stripping processing
By the mixing with biomass carbon, diatomite, the physicochemical property of soil is improved, and the ion that can be further decreased in water contains
Amount, by subsequent separation of solid and liquid, soil has more moisture after administering gained, and specific retention is high, contained by gained moisture
Impurity is few.
Preferably, the solid-to-liquid ratio of step (2) soil and filtering concentrated water is (20-40): 100, such as can be 20:
100,25:100,30:100,35:100 or 40:100.
Preferably, the mass ratio of slurry is (5-15): (5- after step (3) biomass carbon, diatomite and stripping processing
10): 100, such as can be 5:5:100,7:6:100,9:7:100,11:8:100,13:9:100 or 15:10:100 etc..
Preferably, the biomass carbon include in coconut husk charcoal, bamboo charcoal or straw charcoal any one or at least two group
It closes, typical but non-limiting combination includes the combination of coconut carbon and bamboo charcoal, the combination of bamboo charcoal and straw charcoal, coconut carbon and stalk
The combination or coconut carbon of charcoal, the combination of bamboo charcoal and straw charcoal.Wherein, straw charcoal includes but is not limited to corn stover charcoal, tobacco straw
Stalk charcoal, wheat stalk charcoal and combinations thereof.
Preferably, the method also includes step (4): separation obtained by step (3) is produced water return step (1) and underground water
Mixing.
As the optimal technical scheme of second aspect of the present invention the method, described method includes following steps:
(1) filtering underground obtains filtering and produces water and filtering concentrated water；
(2) according to solid-to-liquid ratio (20-40): filtering concentrated water obtained by 100 mixed soils and step (1), carried out after leaching process
Stripping processing obtains slurry after stripping processing to remove the volatile organic matter in mixed slurry；
(3) according to mass ratio (5-15): (5-10): at stripping obtained by 100 mixing biomass charcoals, diatomite and step (2)
Slurry after reason, rear soil is governed after separation of solid and liquid and separation produces water.
(4) separation obtained by step (3) produces water return step (1) and mixes with underground water.
Compared with the existing technology, the invention has the following advantages:
(1) underground water of the present invention cooperates with the structure of governing system simple with soil, can to underground water and soil into
Row collaboration is administered, and therapeutic efficiency is high, excellent effect, using filter membrane provided by the invention to by phenol, nitrobenzene, heavy metal
When the underground water of pollution of chromium is handled, the removal rate of phenol reaches 98.5%, and the removal rate of nitrobenzene reaches 99.5%, a huge sum of money
The removal rate for belonging to chromium reaches 99.93%；
(2) underground water of the present invention cooperates with administering method easy to operate with soil, is produced using filtering obtained by filter element
Water can be directly injected into underground, and filtering concentrated water carries out ion exchange after mixing with soil, makes the Ca in soil2+、Mg2+And SO4 2-
Supplemented, make moisture content improve to 9.3%, porosity improve to 21%, full dose calcium improve to 5.3%, full dose magnesium improve to
3.9%, and by the addition of the auxiliary materials such as biomass carbon, diatomite, the ion concentration in separation production water is further decreased, is improved
Cooperate with the regulation effect of administering method.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that underground water provided by the invention cooperates with governing system with soil.
Wherein: 1-1, sand filter device；1-2；Film filter；2, the first mixing arrangement；3-1, stripper plant；3-2, compression
Machine；4, the second mixing arrangement；5, equipment for separating liquid from solid；6, transmission device.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
It includes sequentially connected filter element and soil that a kind of underground water provided by the invention, which cooperates with governing system with soil,
Repair unit.
The filter element includes sequentially connected husky filter device 1-1 and film filter 1-2, the film filter
1-2 includes the tubular membrane and/or plate membrane being made of functional layer and substrate layer, wherein functional layer is electrospun fibers layer, base
Material layer include nonwoven layer, pet layer, in PP layers or PE layers any one or at least two combination.
The soil remediation unit includes sequentially connected first mixing arrangement 2, stripper plant 3-1, the second mixing arrangement 4
And equipment for separating liquid from solid 5, between first mixing arrangement 2 and stripper plant 3-1, stripper plant 3-1 with second mix dress
It sets between 4 and is separately provided with transmission device 6 between the second mixing arrangement 4 and equipment for separating liquid from solid 5；Wherein,
One mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device；The stripper plant 3-1 packet
Include stripper and compressor 3-2 matched with stripper；The equipment for separating liquid from solid 5 is centrifuge；The transmission device 6 is
Mashing pump.
Embodiment 1
It present embodiments provides a kind of underground water and cooperates with governing system, including sequentially connected filter element and soil with soil
Earth repairs unit.
The soil remediation unit includes sequentially connected first mixing arrangement 2, stripper plant 3-1, the second mixing arrangement 4
And equipment for separating liquid from solid 5, between first mixing arrangement 2 and stripper plant 3-1, stripper plant 3-1 with second mix dress
It sets between 4 and is separately provided with transmission device 6 between the second mixing arrangement 4 and equipment for separating liquid from solid 5；Wherein,
One mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device；The stripper plant 3-1 packet
Include stripper and compressor 3-2 matched with stripper；The equipment for separating liquid from solid 5 is centrifuge；The transmission device 6 is
Mashing pump.
The filter element includes sequentially connected husky filter device 1-1 and film filter 1-2, the film filter
1-2 is tubular membrane, and the filter membrane in tubular membrane is made of functional layer and substrate layer, wherein functional layer is electrospun fibers layer,
Substrate layer is nonwoven layer.
Wherein, the filter membrane of the tubular membrane is the filter membrane being prepared by following methods, and the method includes as follows
Step:
(1) mixing partial size D50 be 80nm ZIF-8, partial size D50 be 80nm metal nanoparticle, bentonite, polypropylene
Nitrile, carboxymethyl cellulose and n,N-Dimethylformamide after dispersion, obtain electrostatic spinning liquid；Wherein, metal nanoparticle is
Mass ratio is the Fe of 1:12O3With Fe3O4Mixture, ZIF-8, metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl are fine
The mass ratio of dimension element and N,N-dimethylformamide is 3:3:4:4:0.8:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 16kV, receive distance 20cm, 40 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.8mL/h；
(3) H is used+Concentration is the H of 0.3mol/L2SO4Film precursor 10h is filtered obtained by solution steeping step (2), is obtained
The filter membrane.
Embodiment 2
It present embodiments provides a kind of underground water and cooperates with governing system with soil, the underground water cooperates with the improvement to be with soil
For system in addition to the filter membrane that the filter membrane of film filter 1-2 is provided from embodiment 1 is different, remaining is same as Example 1.
Wherein, filter membrane used in the present embodiment tubular membrane is the filter membrane being prepared by following methods, the method packet
Include following steps:
(1) mixing partial size D50 be 60nm MOF-5, partial size D50 be 90nm metal nanoparticle, bentonite, polyphenyl second
Alkene, carboxymethyl cellulose and chloroform after dispersion, obtain electrostatic spinning liquid；Wherein, it is 1:2 that metal nanoparticle, which is mass ratio,
Fe and Fe3O4Mixture, the matter of MOF-5, metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl cellulose and chloroform
Amount is than being 2:3:4:7:0.7:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 14kV, receive distance 18cm, 45 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.6mL/h；
(3) H is used+Concentration is the H of 0.2mol/L2SO4Film precursor 12h is filtered obtained by solution steeping step (2), is obtained
The filter membrane.
Embodiment 3
It present embodiments provides a kind of underground water and cooperates with governing system with soil, except film filter 1-2 is tubular membrane, pipe
Filter membrane in formula film is made of functional layer and substrate layer, wherein and functional layer is electrospun fibers layer, and substrate layer is pet layer,
And the filter membrane of tubular membrane is outside the filter membrane being prepared by following methods, remaining is same as Example 1.
The preparation method of the filter membrane includes the following steps:
(1) ZIF-8, the partial size D50 that mixing partial size D50 is 90nm are 60nm metal nanoparticle, bentonite, poly- cream
Acid, carboxymethyl cellulose and dehydrated alcohol, after dispersion, obtain electrostatic spinning liquid；Wherein, metal nanoparticle is that mass ratio is
The Fe of 1:32O3With Fe3O4Mixture, ZIF-8, metal nanoparticle, bentonite, polylactic acid, carboxymethyl cellulose with it is anhydrous
The mass ratio of ethyl alcohol is 4:4:5:5:0.9:100；
(2) electrospun fibers layer is covered on the surface of pet layer using electrostatic spinning liquid obtained by step (1), is filtered
Film precursor；The parameter of electrostatic spinning are as follows: spinning voltage 20kV, receive distance 22cm, 35 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity is 0.9mL/h；
(3) H is used+Concentration is the H of 0.4mol/L2SO4Film precursor 6h is filtered obtained by solution steeping step (2), obtains institute
State filter membrane.
Embodiment 4
It present embodiments provides a kind of underground water and cooperates with governing system with soil, except film filter 1-2 is tubular membrane, institute
It states the total filter membrane of tubular membrane to be made of functional layer and substrate layer, wherein functional layer is electrospun fibers layer, substrate layer PE
Layer, and filter membrane is outside the filter membrane being prepared by following methods, remaining is same as Example 1.
The preparation method of the filter membrane includes the following steps:
(1) mixing partial size D50 be 100nm ZIF-8, partial size D50 be 50nm metal nanoparticle, bentonite, poly- third
Alkene nitrile, carboxymethyl cellulose and n,N-Dimethylformamide after dispersion, obtain electrostatic spinning liquid；Wherein, metal nanoparticle
The Fe and Fe for being 1:1 for mass ratio3O4Mixture, ZIF-8, metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl cellulose
The mass ratio of element and N,N-dimethylformamide is 5:5:6:8:1:100；
(2) electrospun fibers layer is covered on PE layers of surface using electrostatic spinning liquid obtained by step (1), obtains filter membrane
Presoma；The parameter of electrostatic spinning are as follows: spinning voltage 25kV, receive distance 25cm, 50 DEG C of spinning temperature, the stream of electrostatic spinning liquid
Speed is 1mL/h；
(3) H is used+Concentration is that film precursor 3h is filtered obtained by the HCl solution soaking step (2) of 0.5mol/L, obtains institute
State filter membrane.
Embodiment 5
It present embodiments provides a kind of underground water and cooperates with governing system with soil, except film filter 1-2 is tubular membrane, institute
It states the total filter membrane of tubular membrane to be made of functional layer and substrate layer, wherein functional layer is electrospun fibers layer, substrate layer PP
Layer, and filter membrane is outside the filter membrane being prepared by following methods, remaining is same as Example 1.
The preparation method of the filter membrane includes the following steps:
(1) mixing partial size D50 be 50nm MOF-5, partial size D100 be 100nm metal nanoparticle, bentonite, poly- third
Alkene nitrile, carboxymethyl cellulose and n,N-Dimethylformamide after dispersion, obtain electrostatic spinning liquid；Wherein, metal nanoparticle
For the Fe of mass ratio 3:12O3With Fe3O4Mixture, MOF-5, metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl are fine
The mass ratio of dimension element and N,N-dimethylformamide is 1:1:2:2:0.5:100；
(2) electrospun fibers layer is covered on PP layers of surface using electrostatic spinning liquid obtained by step (1), obtains filter membrane
Presoma；The parameter of electrostatic spinning are as follows: spinning voltage 10kV, receive distance 15cm, 30 DEG C of spinning temperature, the stream of electrostatic spinning liquid
Speed is 0.5mL/h；
(3) H is used+Concentration is that film precursor 16h is filtered obtained by the HCl solution soaking step (2) of 0.1mol/L, obtains institute
State filter membrane.
Embodiment 6
It present embodiments provides a kind of underground water and cooperates with governing system with soil, the underground water cooperates with the improvement to be with soil
For system in addition to the filter membrane that the filter membrane of film filter 1-2 is provided from embodiment 1 is different, remaining is same as Example 1.
Wherein, the filter membrane of the tubular membrane is the filter membrane being prepared by following methods, and the method includes as follows
Step:
(1) mixing partial size D50 be 80nm ZIF-8, partial size D50 be 80nm Fe nano particle, bentonite, polypropylene
Nitrile, carboxymethyl cellulose and n,N-Dimethylformamide after dispersion, obtain electrostatic spinning liquid；It is ZIF-8, Fe nano particle, swollen
The mass ratio for moistening soil, polyacrylonitrile, carboxymethyl cellulose and N,N-dimethylformamide is 3:3:4:4:0.8:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 16kV, receive distance 20cm, 40 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.8mL/h；
(3) H is used+Concentration is the H of 0.3mol/L2SO4Film precursor 10h is filtered obtained by solution steeping step (2), is obtained
The filter membrane.
Embodiment 7
It present embodiments provides a kind of underground water and cooperates with governing system with soil, the underground water cooperates with the improvement to be with soil
For system in addition to the filter membrane that the filter membrane of film filter 1-2 is provided from embodiment 1 is different, remaining is same as Example 1.
Wherein, the filter membrane of the tubular membrane is the filter membrane being prepared by following methods, and the method includes as follows
Step:
(1) ZIF-8, bentonite, polyacrylonitrile, carboxymethyl cellulose and N that mixing partial size D50 is 80nm, N- diformazan
Base formamide after dispersion, obtains electrostatic spinning liquid；ZIF-8, bentonite, polyacrylonitrile, carboxymethyl cellulose and N, N- dimethyl
The mass ratio of formamide is 6:4:4:0.8:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 16kV, receive distance 20cm, 40 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.8mL/h；
(3) H is used+Concentration is the H of 0.3mol/L2SO4Film precursor 10h is filtered obtained by solution steeping step (2), is obtained
The filter membrane.
Embodiment 8
It present embodiments provides a kind of underground water and cooperates with governing system with soil, the underground water cooperates with the improvement to be with soil
For system in addition to the filter membrane that the filter membrane of film filter 1-2 is provided from embodiment 1 is different, remaining is same as Example 1.
Wherein, the filter membrane of the tubular membrane is the filter membrane being prepared by following methods, and the method includes as follows
Step:
(1) metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl cellulose and N that mixing partial size D50 is 80nm,
Dinethylformamide after dispersion, obtains electrostatic spinning liquid；Wherein, metal nanoparticle is the Fe that mass ratio is 1:12O3With
Fe3O4Mixture, the matter of metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl cellulose and n,N-Dimethylformamide
Amount is than being 6:4:4:0.8:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 16kV, receive distance 20cm, 40 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.8mL/h；
(3) H is used+Concentration is the H of 0.3mol/L2SO4Film precursor 10h is filtered obtained by solution steeping step (2), is obtained
The filter membrane.
Embodiment 9
It present embodiments provides a kind of underground water and cooperates with governing system with soil, the underground water cooperates with the improvement to be with soil
For system in addition to the filter membrane that the filter membrane of film filter 1-2 is provided from embodiment 1 is different, remaining is same as Example 1.
Wherein, the filter membrane of the tubular membrane is the filter membrane being prepared by following methods, and the method includes as follows
Step:
(1) mixing partial size D50 be 80nm ZIF-8, partial size D50 be 80nm metal nanoparticle, bentonite, polypropylene
Nitrile, carboxymethyl cellulose and n,N-Dimethylformamide after dispersion, obtain electrostatic spinning liquid；Wherein, metal nanoparticle is
Mass ratio is the Fe of 1:12O3With Fe3O4Mixture, ZIF-8, metal nanoparticle, bentonite, polyacrylonitrile, carboxymethyl are fine
The mass ratio of dimension element and N,N-dimethylformamide is 3:3:4:4:0.8:100；
(2) electrospun fibers layer is covered on the surface of nonwoven layer using electrostatic spinning liquid obtained by step (1), be obtained
Filter membrane presoma；The parameter of electrostatic spinning are as follows: spinning voltage 16kV, receive distance 20cm, 40 DEG C of spinning temperature, electrostatic spinning liquid
Flow velocity be 0.8mL/h, obtain the filter membrane.
The underground water provided in embodiment 1-9 is cooperateed in governing system with soil, the filter membrane in membrane filter unit into
Row performance test, makes the average thickness 300nm of the substrate layer of the filter membrane in embodiment 1-9, and electrospun fibers layer is put down
With a thickness of 240nm, the filter membrane for cutting 3cm × 3cm respectively is placed in water-bath oscillation in 300mL test solution, the temperature of oscillation
It is 20 DEG C, the time of oscillation is 72h.
Using liquid chromatogram measuring test solution in organic matter form, using ion chromatography test solution in chromium from
The concentration of son, wherein phenol concentration 410mg/L, nitro phenenyl concentration 260mg/L, chromium ion concentration 110mg/L；Concussion
PH, COD, phenol concentration and the nitro phenenyl concentration in test solution are tested afterwards, acquired results are as shown in table 1.
Table 1
By the data in table 1 it is found that cooperateing with soil the filter membrane in governing system using underground water provided by the present application
The underground water by organic pollution is handled, the removal rate of phenol can be made to reach 98.5%, the removal rate of nitrobenzene reaches
99.5%, the removal rate of heavy metal chromium reaches 99.93%.
Fe is not added in the filter membrane that embodiment 6 provides3O4Although the filter membrane being prepared also can be to by organic
The underground water of object pollution is handled, but the removal rate of phenol is reduced to 90.3% by 98.5%, the removal rate of nitrobenzene by
99.5% drops to 93.2%, and the removal rate of heavy metal chromium drops to 98.63% by 99.93%.
It is not added with metal nanoparticle in the filter membrane that embodiment 7 provides, although the filter membrane being prepared also can be right
Underground water by organic pollution is handled, but the removal rate of phenol is reduced to 85.2% by 98.5%, and nitrobenzene is gone
Except rate drops to 86.4% by 99.5%, the removal rate of heavy metal chromium drops to 98.17% by 99.93%.
Embodiment 8 provide filter membrane in be not added with framework material, although the filter membrane being prepared also can to by
The underground water of organic pollution is handled, but the removal rate of phenol is reduced to 88.7% by 98.5%, the removal rate of nitrobenzene
87.3% is dropped to by 99.5%, the removal rate of heavy metal chromium drops to 98.35% by 99.93%.
The filter membrane that embodiment 9 provides is not modified processing, although the filter membrane being prepared also can be to being had
The underground water of machine object pollution is handled, but the removal rate of phenol is reduced to 83.5% by 98.5%, the removal rate of nitrobenzene by
99.5% drops to 84.9%, and the removal rate of heavy metal chromium drops to 98.43% by 99.93%.
The difference of 1-9 of the embodiment of the present invention is that the composition of filter membrane in film filter 1-2 is different, most by selection effect
The underground water that good embodiment 1 provides cooperates with governing system to carry out cooperateing with improvement with soil to underground water with soil.Below by
Specific application examples illustrates technical solution that collaboration is administered, wherein the initial aqueous rate of soil used is in application examples
5.3%, porosity 15%, full dose calcium 4.3wt%, full dose magnesium 3.1wt%.
Application examples 1
The underground water that the application example provides a kind of offer of Application Example 1 cooperates with governing system treating groundwater with soil
With the method for soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 30:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) to be stripped obtained by mass ratio 9:7:100 mixing coconut husk charcoal, diatomite and step (2) in the second mixing arrangement 4
Slurry after processing, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Application examples 2
The underground water that the application example provides a kind of offer of Application Example 1 cooperates with governing system treating groundwater with soil
With the method for soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 25:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) in the second mixing arrangement 4 obtained by mass ratio 7:6:100 smoking mixture straw charcoal, diatomite and step (2)
Slurry after stripping processing, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Application examples 3
The underground water that the application example provides a kind of offer of Application Example 1 cooperates with governing system treating groundwater with soil
With the method for soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 35:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) to be stripped obtained by mass ratio 13:9:100 mixing bamboo charcoal, diatomite and step (2) in the second mixing arrangement 4
Slurry after processing, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Application examples 4
The underground water that the application example provides a kind of offer of Application Example 1 cooperates with governing system treating groundwater with soil
With the method for soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 40:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) with mass ratio 15:10:100 mixing corn stover charcoal, diatomite and step (2) institute in the second mixing arrangement 4
Slurry after stripping is handled is obtained, is then separated by solid-liquid separation in centrifuge, rear soil is governed and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Application examples 5
The underground water that the application example provides a kind of offer of Application Example 1 cooperates with governing system treating groundwater with soil
With the method for soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 20:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) to be stripped obtained by mass ratio 5:5:100 mixing coconut husk charcoal, diatomite and step (2) in the second mixing arrangement 4
Slurry after processing, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Compare application examples 1
The underground water that this comparison application examples provides a kind of offer of Application Example 1 cooperates with governing system to administer ground with soil
It is lauched the method with soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 20:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) to be starched after mass ratio 10:100 mixing coconut husk charcoal and the processing of stripping obtained by step (2) in the second mixing arrangement 4
Material, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Compare application examples 2
The underground water that this comparison application examples provides a kind of offer of Application Example 1 cooperates with governing system to administer ground with soil
It is lauched the method with soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 20:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) to be starched after mass ratio 10:100 mixing diatomite and the processing of stripping obtained by step (2) in the second mixing arrangement 4
Material, is then separated by solid-liquid separation in centrifuge, is governed rear soil and separation produces water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Compare application examples 3
The underground water that this comparison application examples provides a kind of offer of Application Example 1 cooperates with governing system to administer ground with soil
It is lauched the method with soil, described method includes following steps:
(1) filter element filtering underground is applied, filtering is obtained and produces water and filtering concentrated water；
(2) it is leached in the first mixing arrangement 2 with filtering concentrated water obtained by solid-to-liquid ratio 20:100 mixed soil and step (1)
After processing, stripping processing is carried out in stripper to remove the volatile organic matter in mixed slurry, starched after obtaining stripping processing
Material；
(3) slurry after stripping obtained by solid-liquid separation step (2) is handled in centrifuge, is governed rear soil and separation
Produce water.
(4) separation obtained by step (3) is produced after water return step (1) is mixed with the underground water and is handled by filter element.
First mixing arrangement 2 and the second mixing arrangement 4 are separately the mixing channel with agitating device.
Soil after administering obtained in application examples 1-5 and comparison application examples 1-3 is placed under identical temperature and humidity environment
The content of the moisture content of soil, porosity and full dose calcium, full dose magnesium is measured after one month, one month, wherein use
JC-TR-M3 detects the moisture content of soil, using the porosity of the method measurement soil of EN ISO 11276-2014, uses NY-T
Method measurement full dose calcium and full dose magnesium, acquired results in 296-1995 is as shown in table 2.
Table 2
| Moisture content (%) | Porosity (%) | Full dose calcium (wt%) | Full dose magnesium (wt%) | |
| Application examples 1 | 9.3 | 21 | 5.3 | 3.9 |
| Application examples 2 | 9.1 | 21 | 5.2 | 3.9 |
| Application examples 3 | 9.2 | 20 | 5.3 | 3.8 |
| Application examples 4 | 8.9 | 19 | 5.3 | 3.9 |
| Application examples 5 | 8.8 | 20 | 5.3 | 3.9 |
| Compare application examples 1 | 6.8 | 16 | 4.7 | 3.5 |
| Compare application examples 2 | 7.3 | 17 | 4.8 | 3.4 |
| Compare application examples 3 | 6.3 | 15 | 4.5 | 3.2 |
As shown in Table 2, governing system is cooperateed with to carry out soil and underground water with soil using underground water provided by the present application
Improvement makes, and can make the physicochemical property and Ca of soil after administering2+、Mg2+Content improves, wherein moisture content can be mentioned by 5.3%
Up to 8.8-9.3%, porosity are improved by 15% to 19-21%, and full dose calcium is improved by 4.3% to 5.2-5.3%, full dose magnesium by
3.1% improves to 3.8-3.9%.
When comparing slurry after handling stripping processing in application examples 1, it is not added with biomass carbon, soil is aqueous after gained is administered
Rate is reduced to 6.8% by 9.3%, and porosity is reduced to 16% by 21%, and full dose calcium is reduced to 4.7% by 5.3%, full dose magnesium
3.9% is reduced to 3.5%.
When comparing slurry after handling stripping processing in application examples 2, it is not added with diatomite, the moisture content of soil after gained is administered
It is reduced to 7.3% by 9.3%, porosity is reduced to 17% by 21%, and full dose calcium is reduced to 4.8% by 5.3%, full dose magnesium
3.9% is reduced to 3.4%.
When comparing slurry after handling stripping processing in application examples 3, it is not added with diatomite, the moisture content of soil after gained is administered
It is reduced to 6.3% by 9.3%, porosity is reduced to 15% by 21%, and full dose calcium is reduced to 4.5% by 5.3%, full dose magnesium
3.9% is reduced to 3.2%.
In conclusion underground water of the present invention cooperates with the structure of governing system simple with soil, can to underground water with
Soil carries out collaboration improvement, and therapeutic efficiency is high, excellent effect, using filter membrane provided by the invention to by phenol, nitrobenzene,
When the underground water of heavy metal chromium pollution is handled, the removal rate of phenol reaches 98.5%, and the removal rate of nitrobenzene reaches
99.5%, the removal rate of heavy metal chromium reaches 99.93%；Collaboration administering method provided by the invention is easy to operate, utilizes filtering
Filtering obtained by unit, which produces water, can be directly injected into underground, and filtering concentrated water carries out ion exchange after mixing with soil, makes the Ca in soil2 +、Mg2+And SO4 2-Supplemented, make moisture content improve to 9.3%, porosity improve to 21%, full dose calcium improve to 5.3%,
Full dose magnesium is improved to 3.9%, and by the addition of the auxiliary materials such as biomass carbon, diatomite, further decrease separation produce in water from
Sub- concentration improves the regulation effect of collaboration administering method.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of underground water cooperates with governing system with soil, which is characterized in that the underground water cooperates with governing system packet with soil
Include sequentially connected filter element and soil remediation unit；
The soil remediation unit includes sequentially connected first mixing arrangement, stripper plant, the second mixing arrangement and solid-liquid
Separator, between first mixing arrangement and stripper plant, between stripper plant and the second mixing arrangement and second is mixed
It attaches together to set and is separately provided with transmission device between equipment for separating liquid from solid.
2. underground water according to claim 1 cooperates with governing system with soil, which is characterized in that the filter element includes
Sequentially connected husky filter device and film filter；
Preferably, the film filter includes tubular membrane and/or plate membrane；
Preferably, the filter membrane in the film filter is made of functional layer and substrate layer；
Preferably, the functional layer is electrospun fibers layer；
Preferably, the substrate layer includes in nonwoven layer, layer of polyethylene terephthalate, polypropylene layer or polyethylene layer
Any one or at least two combination.
3. underground water according to claim 1 or 2 cooperates with governing system with soil, which is characterized in that the film filtering dress
Filter membrane in setting is the filter membrane being prepared using following preparation method, and the preparation method includes the following steps:
(1) mixed matrix material, metal nanoparticle, bentonite, polymer, carboxymethyl cellulose and organic solvent, dispersion
Afterwards, electrostatic spinning liquid is obtained；
(2) electrospun fibers layer is covered on the surface of substrate layer using electrostatic spinning liquid obtained by step (1), before obtaining filter membrane
Drive body；
(3) processing is modified to filtering film precursor obtained by step (2) using acid solution, obtains the filter membrane.
4. underground water according to claim 3 cooperates with governing system with soil, which is characterized in that step (1) described skeleton
Material includes the ZIF-8 and/or MOF-5 that partial size D50 is 50-100nm；
Preferably, step (1) described metal nanoparticle includes the Fe that partial size D50 is 50-100nm2O3, Fe or Fe3O4In appoint
It anticipates a kind of or at least two combinations；
Preferably, step (1) described polymer includes any one in polyacrylonitrile, polystyrene or polylactic acid or at least two
The combination of kind；
Preferably, step (1) described organic solvent includes any one in n,N-Dimethylformamide, chloroform or dehydrated alcohol
Or at least two mixing；
Preferably, step (1) framework material, metal nanoparticle, bentonite, polymer, carboxymethyl cellulose with it is organic
The mass ratio of solvent is (1-5): (1-5): (2-6): (2-8): (0.5-1): 100, preferably (3-5): (3-5): (4-6): (4-
6):(0.8-1):100。
5. underground water according to claim 3 or 4 cooperates with governing system with soil, which is characterized in that step (2) is described quiet
The parameter of Electrospun are as follows: spinning voltage 10-25kV, receive distance 15-25cm, 30-50 DEG C of spinning temperature, the stream of electrostatic spinning liquid
Speed is 0.5-1mL/h；
Preferably, step (3) described acid solution includes HCl solution and/or H2SO4Solution；
Preferably, step (3) modification are as follows: filtering film precursor obtained by step (2) is immersed in 3- in acid solution
16h。
6. underground water according to claim 1-5 cooperates with governing system with soil, which is characterized in that described first
Mixing arrangement and the second mixing arrangement are separately the mixing channel with agitating device；
Preferably, the stripper plant includes stripper and compressor matched with stripper；
Preferably, the equipment for separating liquid from solid is centrifuge；
Preferably, the transmission device is mashing pump.
7. a kind of underground water as claimed in any one of claims 1 to 6 cooperates with governing system treating groundwater and soil with soil
Method, which is characterized in that described method includes following steps:
(1) filtering underground obtains filtering and produces water and filtering concentrated water；
(2) concentrated water is filtered obtained by mixed soil and step (1), stripping processing is carried out after leaching process to remove in mixed slurry
Volatile organic matter obtains slurry after stripping processing；
(3) slurry after mixing biomass charcoal, stripping processing obtained by diatomite and step (2), soil after being governed after separation of solid and liquid
Earth and separation produce water.
8. the method according to the description of claim 7 is characterized in that step (2) soil and the solid-to-liquid ratio of filtering concentrated water are
(20-40):100；
Preferably, the mass ratio of slurry is (5-15): (5-10) after step (3) biomass carbon, diatomite and stripping processing:
100。
9. method according to claim 7 or 8, which is characterized in that the method also includes step (4): by step (3) institute
Production water return step (1) must be separated to mix with underground water.
10. according to the described in any item methods of claim 7-9, which is characterized in that described method includes following steps:
(1) filtering underground obtains filtering and produces water and filtering concentrated water；
(2) according to solid-to-liquid ratio (20-40): filtering concentrated water obtained by 100 mixed soils and step (1), stripped after leaching process
Processing obtains slurry after stripping processing to remove the volatile organic matter in mixed slurry；
(3) according to mass ratio (5-15): (5-10): after the processing of stripping obtained by 100 mixing biomass charcoals, diatomite and step (2)
Slurry, rear soil is governed after separation of solid and liquid and separation produces water；
(4) separation obtained by step (3) produces water return step (1) and mixes with underground water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427445A (en) * | 2020-11-04 | 2021-03-02 | 中建水务环保有限公司 | Soil type high load microorganism water environment prosthetic devices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427445A (en) * | 2020-11-04 | 2021-03-02 | 中建水务环保有限公司 | Soil type high load microorganism water environment prosthetic devices |
| CN112427445B (en) * | 2020-11-04 | 2021-06-15 | 中建水务环保有限公司 | Soil type high load microorganism water environment prosthetic devices |
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