CN106057264B - A kind of Spent Radioactive method for treating water of high-efficiency environment friendly - Google Patents
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly Download PDFInfo
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- CN106057264B CN106057264B CN201610415004.5A CN201610415004A CN106057264B CN 106057264 B CN106057264 B CN 106057264B CN 201610415004 A CN201610415004 A CN 201610415004A CN 106057264 B CN106057264 B CN 106057264B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
Abstract
The invention discloses a kind of Spent Radioactive method for treating water of high-efficiency environment friendly, including pretreatment, UF membrane and post processing, the pretreatment includes the activated carbon filtering carried out successively and ultrafiltration membrance filter, UF membrane is the filtering of graphene oxide group compound film, graphene oxide group compound film is prepared on the flake porous carrier that silane coupler is modified in advance after the compound poly-dopamine of graphene oxide, its film layer two dimension aquaporin is less than 0.45nm, post-process as two-pass reverse osmosis processing, the μ s/cm of water conductivity≤40 handled by two-pass reverse osmosis, reach the emission request of radioactive substance.This method can effectively remove the radioactive substance in waste water, and its stability is good, simple to operate, and cost is low.
Description
Technical field：
The present invention relates to Spent Radioactive water treatment field, a kind of Spent Radioactive water process side of high-efficiency environment friendly is specifically related to
Method.
Background technology：
The fast development of China's economy and the continuous exhaustion of fossil energy, turn into the extensive development of nuclear energy and necessarily select
Select.After in March, 2011 Japan's generation Fukushima nuclear accident, nuclear safety and nuclear waste transmutation importance are increasingly closed by people
Note.With developing rapidly for China's nuclear power industry, to the demand of economic, efficient Radwastes treatment new technology also increasingly
Urgently, in addition, application of the radionuclide in military affairs, the energy, industry, agricultural, medical science and other scientific researches increasingly
Extensively, quantity of caused radioactive emission, waste liquid and solid waste is also more and more during these, endangers also increasingly
Greatly.In radioactivity " three wastes ", the volume of radioactive wastewater and contained radioactivity total amount account for the ratio of radwaste total amount
Example is all very big, and therefore, the processing to radioactive wastewater should especially be paid attention to.
Currently used Spent Radioactive water technology mainly includes chemical precipitation method, ion-exchange, absorption method, evaporation
Concentration, membrane separation technique, biological treatment etc..Chemical precipitation method process is simple, and expense is relatively low, is given up suitable for salt content is higher
Water, but its coefficient of purification is low；Ion-exchange purification efficiency high, absorption range of choice it is wide, suitable for salt content it is low and suspend
The poor system of thing, but blockage problem be present, adsorbent reactivation and recovery are difficult easily by high Effects of Salinity in it；Evaporate dense
Contracting method coefficient of purification is high, and flexibility is big, technology relative maturity, and securely and reliably, but technological requirement is horizontal high, and operating cost is high,
The problems such as corrosion and scaling be present；(4) the easily real large-scale operation of ultrafiltration, suspended particulates and colloid ion are contained suitable for separation
Waste water, inoranic membrane has good chemical stability and a radiation resistance, but film vulnerable to pollution, and organic film is easily broken by radiation
It is bad；Hyperfiltration energy consumption is low, easy large-scale operation, and suitable for separating inorganic ions waste water, but it is easily contaminated.
Membrane separation technique compared with the treatment technology of routine, has as a kind of emerging Spent Radioactive water technology
Lot of advantages：(1) normal-temperature operation, energy consumption are low；(2) take up an area less, it is simple to operate；(3) wide adaptability, for various forms in waste water
Pollutant, corresponding membrane process, membrane material, membrane module can be selected to be handled：(4) easily carried out with conventional treatment process
It is integrated.Therefore, membrane separation technique has very big potentiality in Spent Radioactive water process.
Chinese patent (200410042589.8) discloses a kind of Spent Radioactive method for treating water, including pretreatment, film point
From with post processing three steps；The pretreatment includes the precision safety filtering, activated carbon filtering and milipore filter mistake carried out successively
Filter, UF membrane are carried out in nanofiltration membrane component, and post processing is carried out in anion-cation exchange resin processing system, and this method can
Effectively to remove the radioactive substance in water, cost is low, easy to operate, but used membrane stability is poor, radionuclide profit
The rejection of breath is low.
The content of the invention：
It is an object of the invention to provide a kind of Spent Radioactive method for treating water of high-efficiency environment friendly, this method can be removed effectively
Radioactive substance in waste water, the membrane stability employed in wastewater treatment process is good, high to the rejection of radioactive substance.
To achieve the above object, the present invention uses following technical scheme：
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(2) UF membrane：Pretreated radioactive wastewater is filtered by graphene oxide group compound film, wherein aoxidizing stone
Mertenyl composite membrane is prepared on the flake porous carrier that silane coupler is modified in advance after the compound poly-dopamine of graphene oxide
Form, its film layer two dimension aquaporin is less than 0.45nm；
(3) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are (4-6)：1, handled by two-pass reverse osmosis
The fresh water of formation and the volume ratio of concentrated water are (8-10)：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach
To the emission request of radioactive substance.
As the preferred of above-mentioned technical proposal, in step (2), the preparation method of the graphene oxide group compound film includes
Following steps：
A) flake porous carrier is placed in silane coupler ethanol solution and soaked, after taking-up at 120-150 DEG C at heat
0.5-2h is managed, obtains the flake porous carrier that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 0.5-2h under 500-1000W power, obtain graphene oxide dispersion；
C) Dopamine hydrochloride solution is added into graphene oxide dispersion made from step b), is stirred at 20-80 DEG C
1-6h is reacted, centrifuges 3-5 times, then in 40-60 DEG C of drying, obtains poly-dopamine-graphene oxide compound；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 10-30min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Flake porous carrier surface using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, obtain graphene oxide
Group compound film.
As the preferred of above-mentioned technical proposal, in step a), the silane coupler is γ-aminopropyl trimethoxy silicon
Alkane, gamma-aminopropyl-triethoxy-silane, γ-(2,3- glycidoxies) propyl trimethoxy silicane, γ-methacryloxypropyl
Base propyl trimethoxy silicane, γ-aminopropyltrimethoxysilane, γ-urea propyl-triethoxysilicane, N- (β-aminoethyl)-
One or more mixing in gamma-aminopropyl-triethoxy-silane.
As the preferred of above-mentioned technical proposal, in step a), the flake porous carrier is aluminum oxide, silica, oxidation
One or more mixing in titanium, makrolon, poly-vinegar acid cellulose, polyacrylonitrile, polytetrafluoroethylene (PTFE), its aperture is 20-
80nm。
As the preferred of above-mentioned technical proposal, in step a), the concentration of the silane coupler ethanol solution is 0.2mM.
As the preferred of above-mentioned technical proposal, in step b), the concentration of the graphene oxide dispersion is 0.1-3mg/
mL。
As the preferred of above-mentioned technical proposal, in step c), the mass ratio of graphene oxide and dopamine is (2-8)：1.
As the preferred of above-mentioned technical proposal, in step e), the absolute pressure of the vacuum filtration is 5-10KPa.
The invention has the advantages that：
The present invention uses graphene oxide group compound film in membrane separating process, and it uses dopamine to be answered with graphene oxide
Closing, dopamine can effectively adsorb heavy metal ion and radionuclide ion, and graphene oxide has higher hydrophily,
And the rejection of radioactive substance is high；This method can effectively remove the radioactive substance in waste water, and in membrane separating process, film is steady
It is qualitative good, not vulnerable to pollution.
Embodiment：
In order to be better understood from the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solving
The present invention is released, any restriction will not be formed to the present invention.
Embodiment 1
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) preparation of graphene oxide group compound film：
A) aluminum oxide is placed in the silane coupler ethanol solution that concentration is 0.2mM and soaks 2h, after taking-up at 120 DEG C
0.5h is heat-treated, obtains the aluminum oxide that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 0.5h under 500W power, obtain the graphene oxide dispersion that concentration is 0.1mg/mL；
C) Dopamine hydrochloride solution, the stirring reaction at 20 DEG C are added into graphene oxide dispersion made from step b)
1h, centrifuge 3-5 time, then in 40 DEG C of drying, obtain poly-dopamine-graphene oxide compound, wherein, graphene oxide and more
The mass ratio of bar amine is 2：1；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 10min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Oxidation aluminium surface using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, it is compound to obtain graphite oxide alkenyl
Film, wherein, the absolute pressure of vacuum filtration is 5KPa；
(2) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(3) UF membrane：Pretreated radioactive wastewater is passed through into graphene oxide group compound film mistake made from step (1)
Filter, film layer two dimension aquaporin are less than 0.45nm；
(4) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are 4：1, formed by two-pass reverse osmosis processing
Fresh water and concentrated water volume ratio be 8：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach radioactivity
The emission request of material.
Embodiment 2
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) preparation of graphene oxide group compound film：
A) polytetrafluoroethylene (PTFE) is placed in the silane coupler ethanol solution that concentration is 0.2mM and soaks 2h, 150 after taking-up
2h is heat-treated at DEG C, obtains the polytetrafluoroethylene (PTFE) that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 2h under 1000W power, obtain the graphene oxide dispersion that concentration is 3mg/mL；
C) Dopamine hydrochloride solution, the stirring reaction at 80 DEG C are added into graphene oxide dispersion made from step b)
6h, centrifuge 3-5 time, then in 60 DEG C of drying, obtain poly-dopamine-graphene oxide compound, wherein, graphene oxide and more
The mass ratio of bar amine is 8：1；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 30min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Ptfe surface using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, obtain graphite oxide alkenyl
Composite membrane, wherein, the absolute pressure of vacuum filtration is 10KPa；
(2) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(3) UF membrane：Pretreated radioactive wastewater is passed through into graphene oxide group compound film mistake made from step (1)
Filter, film layer two dimension aquaporin are less than 0.45nm；
(4) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are 6：1, formed by two-pass reverse osmosis processing
Fresh water and concentrated water volume ratio be 10：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach radioactivity
The emission request of material.
Embodiment 3
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) preparation of graphene oxide group compound film：
A) silica is placed in the silane coupler ethanol solution that concentration is 0.2mM and soaks 2h, after taking-up at 130 DEG C
0.8h is heat-treated, obtains the silica that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 0.8h under 600W power, obtain the graphene oxide dispersion that concentration is 0.5mg/mL；
C) Dopamine hydrochloride solution, the stirring reaction at 30 DEG C are added into graphene oxide dispersion made from step b)
2h, centrifuge 3-5 time, then in 45 DEG C of drying, obtain poly-dopamine-graphene oxide compound, wherein, graphene oxide and more
The mass ratio of bar amine is 4：1；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 15min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Silicon oxide surface using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, it is compound to obtain graphite oxide alkenyl
Film, wherein, the absolute pressure of vacuum filtration is 6KPa；
(2) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(3) UF membrane：Pretreated radioactive wastewater is passed through into graphene oxide group compound film mistake made from step (1)
Filter, film layer two dimension aquaporin are less than 0.45nm；
(4) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are 5：1, formed by two-pass reverse osmosis processing
Fresh water and concentrated water volume ratio be 9：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach radioactivity
The emission request of material.
Embodiment 4
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) preparation of graphene oxide group compound film：
A) titanium oxide is placed in the silane coupler ethanol solution that concentration is 0.2mM and soaks 2h, after taking-up at 140 DEG C
1h is heat-treated, obtains the titanium oxide that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 1h under 700W power, obtain the graphene oxide dispersion that concentration is 1mg/mL；
C) Dopamine hydrochloride solution, the stirring reaction at 50 DEG C are added into graphene oxide dispersion made from step b)
3h, centrifuge 3-5 time, then in 50 DEG C of drying, obtain poly-dopamine-graphene oxide compound, wherein, graphene oxide and more
The mass ratio of bar amine is 5：1；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 20min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Titania surface using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, it is compound to obtain graphite oxide alkenyl
Film, wherein, the absolute pressure of vacuum filtration is 7KPa；
(2) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(3) UF membrane：Pretreated radioactive wastewater is passed through into graphene oxide group compound film mistake made from step (1)
Filter, film layer two dimension aquaporin are less than 0.45nm；
(4) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are 4：1, formed by two-pass reverse osmosis processing
Fresh water and concentrated water volume ratio be 8：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach radioactivity
The emission request of material.
Embodiment 5
A kind of Spent Radioactive method for treating water of high-efficiency environment friendly, comprises the following steps：
(1) preparation of graphene oxide group compound film：
A) by poly-vinegar acid cellulose be placed in concentration be 0.2mM silane coupler ethanol solution in soak 2h, after taking-up
1.5h is heat-treated at 145 DEG C, obtains the poly-vinegar acid cellulose that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust solution
PH to 8-9, ultrasonic 1.5h under 800W power, obtain the graphene oxide dispersion that concentration is 2mg/mL；
C) Dopamine hydrochloride solution, the stirring reaction at 70 DEG C are added into graphene oxide dispersion made from step b)
5h, centrifuge 3-5 time, then in 55 DEG C of drying, obtain poly-dopamine-graphene oxide compound, wherein, graphene oxide and more
The mass ratio of bar amine is 7：1；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, 500W
Lower ultrasonic 25min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, modified in advance in silane coupler made from step a)
Poly- surface of cellulose acetate using vacuum filtration method formed film, then dried in 50 DEG C of baking oven, obtain graphene oxide
Group compound film, wherein, the absolute pressure of vacuum filtration is 8KPa；
(2) pre-process：Radioactive wastewater is filtered off into water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Middle low molecule radioactive substance, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(3) UF membrane：Pretreated radioactive wastewater is passed through into graphene oxide group compound film mistake made from step (1)
Filter, film layer two dimension aquaporin are less than 0.45nm；
(4) post-process：The post processing is handled for two-pass reverse osmosis, and it is anti-that the concentrated water of second level counter-infiltration returns to the first order
In infiltration, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are 6：1, formed by two-pass reverse osmosis processing
Fresh water and concentrated water volume ratio be 10：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach radioactivity
The emission request of material.
Claims (7)
1. the Spent Radioactive method for treating water of a kind of high-efficiency environment friendly, it is characterised in that comprise the following steps：
(1) pre-process：Radioactive wastewater is filtered off low in water removal by activated carbon filtering and ultrafiltration membrance filter, activated carbon successively
Molecular radiation material, the colloid and all kinds of macromoleculars that ultrafiltration membrance filter is gone in water removal；
(2) UF membrane：Pretreated radioactive wastewater is filtered by graphene oxide group compound film, wherein graphene oxide
Group compound film is prepared on the flake porous carrier that silane coupler is modified in advance after the compound poly-dopamine of graphene oxide
, its film layer two dimension aquaporin is less than 0.45nm；Wherein, the preparation method of graphene oxide group compound film comprises the following steps：
A) flake porous carrier is placed in silane coupler ethanol solution and soaked, is heat-treated after taking-up at 120-150 DEG C
0.5-2h, obtain the flake porous carrier that silane coupler is modified in advance；
B) graphene oxide is placed in water and be dispersed with stirring, add trishydroxymethylaminomethane-hydrochloric acid solution, adjust the pH of solution
To 8-9, ultrasonic 0.5-2h, obtains graphene oxide dispersion under 500-1000W power；
C) Dopamine hydrochloride solution, the stirring reaction at 20-80 DEG C are added into graphene oxide dispersion made from step b)
1-6h, centrifuge 3-5 times, then in 40-60 DEG C of drying, obtain poly-dopamine-graphene oxide compound；
D) poly-dopamine made from step c)-graphene oxide compound and deionized water are mixed evenly, surpassed under 500W
Sound 10-30min, obtains film making solution；
E) film making solution made from step d) is placed in Suction filtration device, in the piece that silane coupler made from step a) is modified in advance
Shape porous carrier surface forms film using vacuum filtration method, is then dried in 50 DEG C of baking oven, obtains graphite oxide alkenyl and answer
Close film；
(3) post-process：The post processing is handled for two-pass reverse osmosis, and the concentrated water of second level counter-infiltration returns to first order counter-infiltration
In, the fresh water and the volume ratio of concentrated water that are formed by first-stage reverse osmosis processing are (4-6)：1, formed by two-pass reverse osmosis processing
Fresh water and the volume ratio of concentrated water be (8-10)：1, the μ s/cm of water conductivity after being handled by two-pass reverse osmosis≤40, reach and put
The emission request of penetrating property material.
A kind of 2. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step a),
The silane coupler is γ-aminopropyltrimethoxysilane, gamma-aminopropyl-triethoxy-silane, the γ-(oxygen of 2,3- epoxies third
Base) propyl trimethoxy silicane, γ-methacryloxypropyl trimethoxy silane, γ-aminopropyltrimethoxysilane,
One or more mixing in γ-urea propyl-triethoxysilicane, N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane.
A kind of 3. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step a),
The flake porous carrier is aluminum oxide, silica, titanium oxide, makrolon, poly-vinegar acid cellulose, polyacrylonitrile, polytetrafluoro
One or more mixing in ethene, its aperture is 20-80nm.
A kind of 4. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step a),
The concentration of the silane coupler ethanol solution is 0.2mM.
A kind of 5. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step b),
The concentration of the graphene oxide dispersion is 0.1-3mg/mL.
A kind of 6. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step c),
The mass ratio of graphene oxide and dopamine is (2-8)：1.
A kind of 7. Spent Radioactive method for treating water of high-efficiency environment friendly as claimed in claim 1, it is characterised in that in step e),
The absolute pressure of the vacuum filtration is 5-10KPa.
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| CN107665746B (en) * | 2016-07-27 | 2020-01-14 | 东华理工大学 | Device for adsorbing and separating uranium in radioactive wastewater by using graphene oxide dispersion liquid |
| CN106448791B (en) * | 2016-12-12 | 2018-06-29 | 河北工业大学 | A kind of experimental method using adsorption method for purifying simulated emission waste water |
| CN109966931A (en) * | 2019-04-07 | 2019-07-05 | 北京化工大学 | A kind of preparation method of graphene oxide/attapulgite/polyvinyl alcohol ceramic matrix composite membrane |
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| KR101399365B1 (en) * | 2013-08-27 | 2014-05-27 | (주)이엔이 | Apparatus for disposal of liquid radioactive waste |
| CN103903879B (en) * | 2014-02-19 | 2017-02-08 | 国家纳米科学中心 | Porous grapheme/ MnO2 composite film and preparation method and application thereof |
| CN105321589B (en) * | 2014-07-23 | 2018-03-02 | 上海一鸣过滤技术有限公司 | A kind of method that radioactive wastewater is handled using full embrane method |
| CN104399090A (en) * | 2014-11-12 | 2015-03-11 | 深圳先进技术研究院 | Poly dopamine-modified reduced graphene oxide and preparation method and application thereof |
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| CN109260962A (en) * | 2018-11-20 | 2019-01-25 | 南京大学 | A kind of method of the composite membrane and its application of the efficient rapid acquiring of heavy metal in complex system |
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