CN109331849A - A kind of preparation method of photocatalysis sewage processing composite membrane - Google Patents
A kind of preparation method of photocatalysis sewage processing composite membrane Download PDFInfo
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- CN109331849A CN109331849A CN201811259435.2A CN201811259435A CN109331849A CN 109331849 A CN109331849 A CN 109331849A CN 201811259435 A CN201811259435 A CN 201811259435A CN 109331849 A CN109331849 A CN 109331849A
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- composite membrane
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 38
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 37
- 239000010865 sewage Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title claims abstract description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 16
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 14
- 210000002469 basement membrane Anatomy 0.000 claims abstract description 14
- 210000004379 membrane Anatomy 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 9
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 239000002243 precursor Substances 0.000 claims abstract description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 4
- 238000007731 hot pressing Methods 0.000 claims abstract description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 10
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 8
- 239000008236 heating water Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 6
- 229920000620 organic polymer Polymers 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010335 hydrothermal treatment Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000004985 diamines Chemical class 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 35
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920000141 poly(maleic anhydride) Polymers 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- PMUIBVMKQVKHBE-UHFFFAOYSA-N [S].NC(N)=O Chemical compound [S].NC(N)=O PMUIBVMKQVKHBE-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003986 organophosphate insecticide Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011864 timber preservative Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
- B01J27/18—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr with metals other than Al or Zr
- B01J27/1802—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates
- B01J27/1808—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates with zinc, cadmium or mercury
-
- B01J35/39—
-
- B01J35/59—
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The present invention relates to sewage treatment fields, specifically disclose a kind of preparation method of photocatalysis sewage processing composite membrane, basement membrane and photocatalysis film hot pressing are formed the photocatalysis sewage and handle composite membrane.Photocatalysis film the preparation method comprises the following steps: the zirconium dioxide gel that is obtained after ammonium fluozirconate is handled and with other dissolution of raw material in propanol solution, evaporate part solution, carbon nanotube is added, slurry is formed after heating, and film is carried out on substrate, film is heat-treated under vacuum, obtains photocatalysis sewage processing composite membrane.Basement membrane carries out hydro-thermal reaction the preparation method comprises the following steps: AL203 film is placed in the precursor solution of CdS, and washing obtains AL203CDS film；Then pass through chemical vapor deposition P205.Composite membrane is handled using photocatalysis sewage prepared by method of the invention, photocatalysis efficiency is greatly improved, extends the service life of photocatalysis membrana.
Description
Technical field
The present invention relates to sewage treatment fields, specifically disclose a kind of preparation method of photocatalysis sewage processing composite membrane.
Background technique
There are at high cost, low efficiencys, secondary pollution problems for traditional sewage water treatment method.Studies have shown that being urged with light
The semiconductor nano grade oxide for the property changed can utilize ultraviolet degradation multiple pollutant, can by hydro carbons in water, surfactant,
The oxygenolysis such as organic dyestuff, itrogenous organic substance, organophosphorus insecticide, timber preservative, can be used for sewage treatment.
When carrying out sewage treatment using powder photocatalytic oxide, there are the recycling of powder difficulty, suspension powder influence light are saturating
The problems such as crossing rate；Therefore titanium deoxid film is mostly used to carry out photocatalysis in recent years, but that there are contacts area is smaller, catalysis effect
The problems such as rate is low, the service life is not high.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide a kind of photocatalysis sewages
Handle the preparation method of composite membrane.
To achieve the above object, the present invention uses following scheme.
A kind of preparation method of photocatalysis sewage processing composite membrane, specifically: in coating on base films adhesive, by photocatalysis
Film is placed on basement membrane, and in 150 degrees Celsius of lower hot pressing, the photocatalysis sewage processing composite membrane is formed after cooling.
Wherein photocatalysis film the preparation method comprises the following steps: ammonium fluozirconate is added in organic acid soln, wherein ammonium fluozirconate:
The molar ratio of organic acid is 1:(0.5~10)；Heating water bath is to 90 DEG C and stirs, and after reaction 3 hours, adds in obtained solution
Enter ethylenediamine, wherein ammonium fluozirconate: the molar ratio of ethylenediamine be 1:(1~15), heating water bath to 85 DEG C and stir 1 hour after,
It is reacted 24 hours at a temperature of being continually maintained in 85 DEG C, obtains zirconium dioxide gel；By zirconium dioxide gel, cerous nitrate, organic
Polymer is dissolved in propanol solution, zirconium dioxide gel: cerous nitrate: the mass ratio of organic polymer is 1:(0.03~0.2):
(2~15)；After mixing, solution is evaporated 50% in an oven, carbon nanotube is added, wherein carbon nanotube and titanium dioxide
The mass ratio of zirconium gel is 1:(800~3000)；Then 150 DEG C progress hydro-thermal process 3 hours, by hydrothermal treatment and cooling
The slurry obtained afterwards carries out film on substrate, obtains film after being dried at room temperature for；Obtained film is removed from substrate,
It is heat-treated under vacuum, obtains photocatalysis film.
Wherein, it using ammonium fluozirconate as raw material, and is mixed after being separately added into acid solution and aqueous slkali, dispersion can be obtained more
Uniform gel, the film composition distribution obtained by above-mentioned gel is also more uniform, improves thin film strength.
The preparation method of basement membrane: AL2O3 film is made by magnetron sputtering method, AL2O3 film is placed in the precursor of CdS
Hydro-thermal reaction is carried out in solution, the precursor solution of the CdS is formulated by cadmium acetate, thiocarbamide and water, wherein cadmium acetate: sulphur
Urea is 1:1, washed after reaction to obtain AL203-CDS film；Then by chemical vapor deposition P205, P205- is formed
CdS-AL2O3 basement membrane.
Wherein, equally there is preferable photo-catalysis capability as the P2O5-CdS-AL2O3 film of basement membrane, by P2O5-CdS-
AL2O3 basement membrane and above-mentioned organic polymer photocatalysis film are compound, and basement membrane can also pass through the dirt in wastewater by photocatalysis
Object is contaminated, so that light-catalysed contact area be made to increase, significantly improves the photocatalysis efficiency of photocatalysis film.
Further, the mass concentration of the organic acid soln is 5%~30%.
Further, the organic acid is selected from one of citric acid, trichloroacetic acid.
Further, the organic polymer in polymaleic anhydride, polyurethane, hydroxypropyl methyl cellulose one
Kind.
Further, described adhesive is ethylene-vinyl acetate copolymer.
On the one hand, the heat treatment mode are as follows: 200 DEG C processing 1-2 hours, be then warming up to 350 DEG C heat treatment 0.5
Hour, finally it is cooled to 160 DEG C of processing 3-5 hours.
Using three-stage process heat treatment process, film can be prevented to be heat-treated in effectively removing material while impurity
Excessive stress variation is generated in the process and generates defect, effectively increases the quality of finished films.
On the other hand, the substrate is one of glass, metal.
Composite membrane is handled using photocatalysis sewage prepared by method of the invention, photocatalysis efficiency is greatly improved, extends
The service life of photocatalysis film.
Specific embodiment
For the ease of the understanding of those skilled in the art, below with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not is limitation of the invention.
Photocatalysis sewage processing composite membrane can be prepared as follows: total in coating on base films ethene-vinyl acetate
Photocatalysis film is placed on basement membrane by polymers, and in 150 degrees Celsius of lower hot pressing, it is multiple that the photocatalysis sewage processing is formed after cooling
Close film.
Basement membrane the preparation method comprises the following steps: by magnetron sputtering method be made AL2O3 film, AL2O3 film is placed in the preceding body of CdS
Hydro-thermal reaction is carried out in liquid solution, the precursor solution of the CdS is formulated by cadmium acetate, thiocarbamide and water, wherein cadmium acetate:
Thiocarbamide is 1:1, washed after reaction to obtain AL2O3-CDS film；Then P2O5 is existed by chemical vapor deposition
On AL2O3-CDS film, P2O5-CdS-AL2O3 basement membrane is formed.
Embodiment one
The preparation method of photocatalysis film, by ammonium fluozirconate be added to mass concentration be 25% citric acid solution in, wherein
Ammonium fluozirconate: the molar ratio of citric acid is 1:0.5；Heating water bath is to 90 DEG C and stirs, after reaction 3 hours, in obtained solution
Middle addition ethylenediamine, wherein ammonium fluozirconate: the molar ratio of ethylenediamine is 1:1, and heating water bath is to 85 DEG C and after stirring 1 hour, after
Continue and reacted 24 hours at a temperature of being maintained at 85 DEG C, obtains zirconium dioxide gel；By zirconium dioxide gel, cerous nitrate, polyurethane
Be dissolved in propanol solution, zirconium dioxide gel: cerous nitrate: the mass ratio of polyurethane is 1:0.2:2；After mixing, it is drying
Solution is evaporated 50% in case, carbon nanotube is added, wherein the mass ratio of carbon nanotube and zirconium dioxide gel is 1:3000；
Then 150 DEG C progress hydro-thermal process 3 hours, the slurry obtained after hydrothermal treatment and cooling is subjected to film on substrate,
Film is obtained after being dried at room temperature for；Obtained film is removed from substrate, is put into Muffle furnace, furnace inner environment is modulated true
Sky is handled 2 hours at 200 DEG C, is then warming up to 350 DEG C and is heat-treated 0.5 hour, is finally cooled to 160 DEG C and is handled 3 hours, obtains
To photocatalysis film.
Embodiment two
The preparation method of photocatalysis film, by ammonium fluozirconate be added to mass concentration be 8% solution of trichloroacetic acid in, wherein
Ammonium fluozirconate: the molar ratio of trichloroacetic acid is 1:10；Heating water bath is to 90 DEG C and stirs, after reaction 3 hours, in obtained solution
Middle addition ethylenediamine, wherein ammonium fluozirconate: the molar ratio of ethylenediamine is 1:15, and heating water bath is to 85 DEG C and after stirring 1 hour, after
Continue and reacted 24 hours at a temperature of being maintained at 85 DEG C, obtains zirconium dioxide gel；By zirconium dioxide gel, cerous nitrate, poly- Malaysia
Acid anhydrides is dissolved in propanol solution, zirconium dioxide gel: cerous nitrate: the mass ratio of polymaleic anhydride is 1:0.03:15；Mixing is equal
After even, solution is evaporated 50% in an oven, carbon nanotube is added, wherein the mass ratio of carbon nanotube and zirconium dioxide gel
For 1:800；Then 150 DEG C progress hydro-thermal process 3 hours, the slurry obtained after hydrothermal treatment and cooling is enterprising in substrate
Row film obtains film after being dried at room temperature for；Obtained film is removed from substrate, is put into Muffle furnace, by furnace inner ring
Vacuum is modulated in border, is handled 1 hour at 200 DEG C, is then warming up to 350 DEG C and is heat-treated 0.5 hour, and 160 DEG C of processing 5 are finally cooled to
Hour, obtain photocatalysis film.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (1)
1. a kind of preparation method of photocatalysis sewage processing composite membrane, it is characterised in that: in coating on base films adhesive, light is urged
Change film to be placed on basement membrane, in 150 degrees Celsius of lower hot pressing, forms the photocatalysis sewage processing composite membrane after cooling；
Wherein photocatalysis film the preparation method comprises the following steps: ammonium fluozirconate is added in organic acid soln, wherein ammonium fluozirconate: organic
The molar ratio of acid is 1:(0.5~10)；Heating water bath is to 90 DEG C and stirs, and after reaction 3 hours, second is added in obtained solution
Diamines, wherein ammonium fluozirconate: the molar ratio of ethylenediamine is 1:(1~15), heating water bath continues to 85 DEG C and after stirring 1 hour
It is reacted 24 hours at a temperature of being maintained at 85 DEG C, obtains zirconium dioxide gel；By zirconium dioxide gel, cerous nitrate, organic polymer
Object is dissolved in propanol solution, zirconium dioxide gel: cerous nitrate: the mass ratio of organic polymer is 1:(0.03~0.2): (2~
15)；After mixing, solution is evaporated 50% in an oven, carbon nanotube is added, wherein carbon nanotube and zirconium dioxide are solidifying
The mass ratio of glue is 1:(800~3000)；Then 150 DEG C progress hydro-thermal process 3 hours, will be after hydrothermal treatment and cooling
To slurry film is carried out on substrate, obtain film after being dried at room temperature for；Obtained film is removed from substrate, true
It is heat-treated under sky, obtains photocatalysis film；
The preparation method of basement membrane: AL203 film is made by magnetron sputtering method, AL203 film is placed in the precursor solution of CdS
Middle carry out hydro-thermal reaction, the precursor solution of the CdS are formulated by cadmium acetate, thiocarbamide and water, wherein cadmium acetate: thiocarbamide is
1:1, it is washed after reaction to obtain AL2O3-CDS film；Then by chemical vapor deposition P2O5, P2O5-CdS- is formed
AL203 basement membrane；The mass concentration of the organic acid soln is 5%~30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259435.2A CN109331849A (en) | 2018-10-26 | 2018-10-26 | A kind of preparation method of photocatalysis sewage processing composite membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259435.2A CN109331849A (en) | 2018-10-26 | 2018-10-26 | A kind of preparation method of photocatalysis sewage processing composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109331849A true CN109331849A (en) | 2019-02-15 |
Family
ID=65312007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811259435.2A Withdrawn CN109331849A (en) | 2018-10-26 | 2018-10-26 | A kind of preparation method of photocatalysis sewage processing composite membrane |
Country Status (1)
| Country | Link |
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| CN (1) | CN109331849A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404589A (en) * | 2019-08-01 | 2019-11-05 | 上海环境卫生工程设计院有限公司 | A kind of photocatalysis film and its preparation method and application |
| CN110935491A (en) * | 2019-12-02 | 2020-03-31 | 浙江蓝绿新材料科技有限公司 | Preparation method of organic composite membrane for water pollution pretreatment |
-
2018
- 2018-10-26 CN CN201811259435.2A patent/CN109331849A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404589A (en) * | 2019-08-01 | 2019-11-05 | 上海环境卫生工程设计院有限公司 | A kind of photocatalysis film and its preparation method and application |
| CN110935491A (en) * | 2019-12-02 | 2020-03-31 | 浙江蓝绿新材料科技有限公司 | Preparation method of organic composite membrane for water pollution pretreatment |
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Application publication date: 20190215 |