CN105413473A - Novel water treatment membrane stack - Google Patents
Novel water treatment membrane stack Download PDFInfo
- Publication number
- CN105413473A CN105413473A CN201510985976.3A CN201510985976A CN105413473A CN 105413473 A CN105413473 A CN 105413473A CN 201510985976 A CN201510985976 A CN 201510985976A CN 105413473 A CN105413473 A CN 105413473A
- Authority
- CN
- China
- Prior art keywords
- disc
- membrane
- sealing ring
- membrane stack
- new type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 210000004379 membrane Anatomy 0.000 claims description 50
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 37
- 239000002033 PVDF binder Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 15
- 210000002469 basement membrane Anatomy 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 14
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 7
- 239000012498 ultrapure water Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- BCNBMSZKALBQEF-UHFFFAOYSA-N 1,3-dimethylpyrrolidin-2-one Chemical compound CC1CCN(C)C1=O BCNBMSZKALBQEF-UHFFFAOYSA-N 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/082—Flat membrane modules comprising a stack of flat membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/06—External membrane module supporting or fixing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a novel water treatment membrane stack which includes a plurality of disk-type membrane sheets, a plurality of sealing rings, two fixing rings, and a water collecting tube. A mounting through hole, of which the diameter is matched with the outer diameter of the water collecting tube, is disposed in the center of each disk-type membrane sheet. The sealing rings are matched with the mounting through holes. A plurality of water outlet holes are formed in the water collecting tube. N disk-type membrane sheets and (N+1) sealing rings are arranged successively at interval, so that each disk-type membrane sheet is clamped between each two sealing rings, wherein the sealing rings are arranged correspondingly to the mounting through holes. The water collecting tube passes through the mounting through holes and inner rings of the sealing rings to connect all of the disk-type membrane sheets and the sealing rings in series. All of the disk-type membrane sheets and the sealing rings are fixed onto the water collecting tube by arranging the two fixing rings on the sealing rings at two ends respectively. By means of the disk-type membrane sheets which are assembled cylindrically in series, a structure that water enters through periphery and is discharged from the center is formed, thereby greatly reducing the occupied volume of the membrane stack on the basis of ensuring enough membrane contact area.
Description
Technical field
The present invention relates to water-treatment technology field, specifically, what relate to is a kind of new type water process membrane stack.
Background technology
Membrane technology is described as the water technology of 21 century, develop over nearly 40 years day by day rapid.Compared with traditional water technology, membrane technology has energy-conservation, small investment, easy and simple to handle, treatment effeciency advantages of higher, and its application brings huge environment and economy benefit to the mankind.Membrane technology being of wide application in water treatment is general, both can be used for drinking water treatment and also can be used for wastewater treatment, and also had and set foot in the water treatment of some special industry.
In application of membrane process, fouling membrane is maximum problem.Along with the prolongation of service time, pollutant is adsorbed on film surface, through piling up for a long time, can cause Pore Blocking, reduces film handling property.And this situation has become one of bottleneck in water treatment by membrane technique.And usually also there is the problem that volume is large, occupation of land is many, treatment effect is bad, operating cost is high in existing membrane stack.
Therefore, the antifouling property how improving membrane stack becomes the problem of those skilled in the art's primary study.
Summary of the invention
For overcoming prior art Problems existing, the invention provides that a kind for the treatment of effect is good, the new type water process membrane stack of efficient energy-saving.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of new type water process membrane stack, comprise disc-type diaphragm, sealing ring, retainer plate and collector pipe, wherein, there is in the middle part of disc-type diaphragm the installation through hole that size is mated with collector pipe external diameter, sealing ring mates with this installation through hole, collector pipe has multiple ostium excurrens; N number of described disc-type diaphragm and N+1 described sealing ring successively interval is piled and is arranged, every 2 sealing rings are made to clamp 1 disc-type diaphragm, and sealing ring is corresponding with installation lead to the hole site, all disc-type diaphragms and sealing ring are connected in series through installation through hole and sealing ring inner ring by described collector pipe, and respectively adopting a retainer plate to be fixed on collector pipe by all disc-type diaphragms and sealing ring in the sealing ring position at both ends, described ostium excurrens is positioned at the position that collector pipe is provided with disc-type diaphragm.Described sealing ring is two-way sealing ring.
In order to increase the effective film area in related volume, the spacing between adjacent described disc-type diaphragm is 2 ~ 5mm.
In order to improve water outlet efficiency, the aperture of described ostium excurrens is no more than the thickness of disc-type diaphragm.
In order to improve the water yield of membrane stack entirety, preferred as one, the external diameter of described collector pipe is 30mm.
Particularly, in order to realize treatment function better, described disc-type diaphragm comprises and stacks gradually up and down and suppress modified PVDF membrane in video disc shape, support flow-guiding screen and modified PVDF membrane, and the installation through hole of all modified PVDF membrane and support flow-guiding screen is run through in this video disc shape center, the peripheral edge of described upper and lower two-layer modified PVDF membrane is compressed to closed one; Described ostium excurrens is communicated with support flow-guiding screen.
Further, described modified PVDF membrane is formed by PVDF basement membrane with in the composite modified coating that described PVDF membrane surface applies.
Wherein, the casting solution that described PVDF basement membrane is made up of the component of following mass percent is made:
PVDF16 ~ 30%, glycol monoethyl ether 15 ~ 20%, polyvinylpyrrolidone 20 ~ 25%, dimethylformamide 2 ~ 5%, dimethyl pyrrolidone 10 ~ 15%, dimethyl sulfoxide (DMSO) 7 ~ 12%.
Further, described PVDF basement membrane is obtained by following process:
After each component material of casting solution is mixed according to quantity, under the temperature conditions of 65 ~ 100 DEG C, stirring 24 ~ 36h to being uniformly dissolved, forming casting solution; Then by the casting solution made on a glass, scrape and make just film, and under the condition of 15 ~ 25 DEG C solidification forming; First film automatically disengages glass plate after being shaped, and then first film is placed in ultra-pure water and soaks 12 ~ 24h, and change a water every 3h, finally cleans and obtains PVDF basement membrane.
Further, formed after the composite modified reagent that described composite modified coating is applied by the PVDF membrane surface after cleaning dries.
Specifically, the solute uniform dissolution that is made up of the polyvinylpyrrolidone of the polyvinyl alcohol of 7 ~ 20% mass percents, the maleic anhydride of 2 ~ 15% mass percents, the dicumyl peroxide of 0.1 ~ 1% mass percent and 0 ~ 3.8% mass percent of described composite modified reagent is obtained in ultra-pure water solvent.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts disc-type diaphragm, and adopt tandem to be barrel mast shape by all diaphragm arrangement, form the structure of around feed liquor process, central water outlet, on the basis ensureing sufficient film contact area, greatly reduce membrane stack and take volume, and the diaphragm of specially treated also greatly strengthen antifouling property and the water penetration on film surface, improve water treatmenting performance, and the present invention is novel, structure is simple, with low cost, convenient and practical, be with a wide range of applications, be applicable to applying.
(2) the present invention also adopts the basement membrane that special material is made, improve the suppleness of diaphragm, it is bending not yielding, smooth surface, and the water turbulence effect that can improve film surface reduces concentration polarization, the hole simultaneously film formed is mandruka network structure, substantially increase blocking up property of anti-soil, also by modifying agent, current potential process is carried out to film surface, make it have more hydrophily, and film adhesion is strong, not easily separatedly to peel off.
(3) the present invention adopts the diaphragm structure of three-decker, water purification after being filtered by the pvdf membrane of outer two layers is by the support flow-guiding screen inflow centre of intermediate course, water after the design of two-way sealing ring makes filtration can only enter in collector pipe from the ostium excurrens collector pipe and collect, change and filtered water-out manners in the past, show unique characteristics.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is side-looking structural representation of the present invention.
Fig. 3 is the sectional view of diaphragm in the present invention.
Fig. 4 is the structural representation of modified PVDF membrane in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Figures 1 to 4, this new type water process membrane stack, comprise disc-type diaphragm 1, sealing ring 2, retainer plate 3 and collector pipe 4, wherein, there is in the middle part of disc-type diaphragm the installation through hole 11 that size is mated with collector pipe external diameter, sealing ring mates with this installation through hole, collector pipe has multiple ostium excurrens; N number of described disc-type diaphragm and N+1 described sealing ring successively interval is piled and is arranged, every 2 sealing rings are made to clamp 1 disc-type diaphragm, and sealing ring is corresponding with installation lead to the hole site, all disc-type diaphragms and sealing ring are connected in series through installation through hole and sealing ring inner ring by described collector pipe, and respectively adopting a retainer plate to be fixed on collector pipe by all disc-type diaphragms and sealing ring in the sealing ring position at both ends, described ostium excurrens is positioned at the position that collector pipe is provided with disc-type diaphragm.N be greater than 1 integer.Described sealing ring is two-way sealing ring.
In order to increase the effective film area in related volume, the spacing between adjacent described disc-type diaphragm is 2 ~ 5mm.In order to improve water outlet efficiency, the aperture of described ostium excurrens is no more than the thickness of disc-type diaphragm.In order to improve the water yield of membrane stack entirety, preferred as one, the external diameter of described collector pipe is 30mm.
Particularly, in order to realize treatment function better, described disc-type diaphragm comprises and stacks gradually up and down and suppress modified PVDF membrane 12 in video disc shape, support flow-guiding screen 13 and modified PVDF membrane, and the installation through hole 11 of all modified PVDF membrane and support flow-guiding screen is run through in this video disc shape center, the peripheral edge of described upper and lower two-layer modified PVDF membrane is compressed to closed one; Described ostium excurrens is communicated with support flow-guiding screen.
Further, described modified PVDF membrane is formed by PVDF basement membrane 14 with in the composite modified coating 15 that described PVDF membrane surface applies.
Wherein, the casting solution that described PVDF basement membrane is made up of the component of following mass percent is made:
PVDF16 ~ 30%, glycol monoethyl ether 15 ~ 20%, polyvinylpyrrolidone 20 ~ 25%, dimethylformamide 2 ~ 5%, dimethyl pyrrolidone 10 ~ 15%, dimethyl sulfoxide (DMSO) 7 ~ 12%.
Further, described PVDF basement membrane is obtained by following process:
After each component material of casting solution is mixed according to quantity, under the temperature conditions of 65 ~ 100 DEG C, stirring 24 ~ 36h to being uniformly dissolved, forming casting solution; Then by the casting solution made on a glass, scrape and make just film, and under the condition of 15 ~ 25 DEG C solidification forming; First film automatically disengages glass plate after being shaped, and then first film is placed in ultra-pure water and soaks 12 ~ 24h, and change a water every 3h, finally cleans and obtains PVDF basement membrane.
Further, formed after the composite modified reagent that described composite modified coating is applied by the PVDF membrane surface after cleaning dries.Specifically, the solute uniform dissolution that is made up of the polyvinylpyrrolidone of the polyvinyl alcohol of 7 ~ 20% mass percents, the maleic anhydride of 2 ~ 15% mass percents, the dicumyl peroxide of 0.1 ~ 1% mass percent and 0 ~ 3.8% mass percent of described composite modified reagent is obtained in ultra-pure water solvent.When preparing composite modified reagent, by above-mentioned solute dissolves in the ultra-pure water solvent of 80 ± 3 DEG C, use at the uniform velocity agitator to stir 15 ~ 25min by the speed of 75 ~ 150rad/min to above-mentioned mixed solution, each component is fully mixed, forms gluing state.
By PVDF basement membrane distilled water washes clean, then in gnotobasis, leave standstill 2h; The composite modified reagent of gluing state is evenly coated on PVDF membrane surface, naturally dries at the temperature of 25 ± 3 DEG C.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopt design principle of the present invention, and the change carried out non-creativeness work on this basis and make, all should belong within protection scope of the present invention.
Claims (10)
1. a new type water process membrane stack, is characterized in that, comprises disc-type diaphragm, sealing ring, retainer plate and collector pipe, wherein, have the installation through hole that size is mated with collector pipe external diameter in the middle part of disc-type diaphragm, sealing ring mates with this installation through hole, collector pipe has multiple ostium excurrens; N number of described disc-type diaphragm and N+1 described sealing ring successively interval is piled and is arranged, every 2 sealing rings are made to clamp 1 disc-type diaphragm, and sealing ring is corresponding with installation lead to the hole site, all disc-type diaphragms and sealing ring are connected in series through installation through hole and sealing ring inner ring by described collector pipe, and respectively adopting a retainer plate to be fixed on collector pipe by all disc-type diaphragms and sealing ring in the sealing ring position at both ends, described ostium excurrens is positioned at the position that collector pipe is provided with disc-type diaphragm.
2. new type water process membrane stack according to claim 1, is characterized in that, the spacing between adjacent described disc-type diaphragm is 2 ~ 5mm.
3. new type water process membrane stack according to claim 1, is characterized in that, the aperture of described ostium excurrens is no more than the thickness of disc-type diaphragm.
4. new type water process membrane stack according to claim 1, is characterized in that, the external diameter of described collector pipe is 30mm.
5. the new type water process membrane stack according to any one of claim 1 ~ 4, it is characterized in that, described disc-type diaphragm comprises and stacks gradually up and down and suppress modified PVDF membrane in video disc shape, support flow-guiding screen and modified PVDF membrane, and the installation through hole of all modified PVDF membrane and support flow-guiding screen is run through in this video disc shape center, the peripheral edge of described upper and lower two-layer modified PVDF membrane is compressed to closed one; Described ostium excurrens is communicated with support flow-guiding screen.
6. new type water process membrane stack according to claim 5, is characterized in that, described modified PVDF membrane is formed by PVDF basement membrane with in the composite modified coating that described PVDF membrane surface applies.
7. new type water process membrane stack according to claim 6, is characterized in that, the casting solution that described PVDF basement membrane is made up of the component of following mass percent is made:
PVDF16 ~ 30%, glycol monoethyl ether 15 ~ 20%, polyvinylpyrrolidone 20 ~ 25%, dimethylformamide 2 ~ 5%, dimethyl pyrrolidone 10 ~ 15%, dimethyl sulfoxide (DMSO) 7 ~ 12%.
8. new type water process membrane stack according to claim 7, is characterized in that, described PVDF basement membrane is obtained by following process:
After each component material of casting solution is mixed according to quantity, under the temperature conditions of 65 ~ 100 DEG C, stirring 24 ~ 36h to being uniformly dissolved, forming casting solution; Then by the casting solution made on a glass, scrape and make just film, and under the condition of 15 ~ 25 DEG C solidification forming; First film automatically disengages glass plate after being shaped, and then first film is placed in ultra-pure water and soaks 12 ~ 24h, and change a water every 3h, finally cleans and obtains PVDF basement membrane.
9. new type water process membrane stack according to claim 6, is characterized in that, is formed after the composite modified reagent that described composite modified coating is applied by the PVDF membrane surface after cleaning dries.
10. new type water process membrane stack according to claim 9, it is characterized in that, the solute uniform dissolution that described composite modified reagent is made up of the polyvinylpyrrolidone of the polyvinyl alcohol of 7 ~ 20% mass percents, the maleic anhydride of 2 ~ 15% mass percents, the dicumyl peroxide of 0.1 ~ 1% mass percent and 0 ~ 3.8% mass percent is obtained in ultra-pure water solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985976.3A CN105413473B (en) | 2015-12-25 | 2015-12-25 | A kind of water process membrane stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985976.3A CN105413473B (en) | 2015-12-25 | 2015-12-25 | A kind of water process membrane stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105413473A true CN105413473A (en) | 2016-03-23 |
| CN105413473B CN105413473B (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510985976.3A Active CN105413473B (en) | 2015-12-25 | 2015-12-25 | A kind of water process membrane stack |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617865A (en) * | 2016-04-05 | 2016-06-01 | 成都美富特膜科技有限公司 | Novel high-efficiency filtering water treatment membrane stack |
| CN108771972A (en) * | 2018-05-30 | 2018-11-09 | 江苏八达科技股份有限公司 | A kind of membrane filtration module |
| CN110314552A (en) * | 2019-06-28 | 2019-10-11 | 湖北百清环保技术有限公司 | A kind of stacked ultra-filtration membrane device |
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| CN102921314A (en) * | 2012-10-25 | 2013-02-13 | 贵阳时代沃顿科技有限公司 | Compound reverse osmosis membrane with interpenetrating network desalting layer and preparation method of membrane |
| CN103224302A (en) * | 2013-04-09 | 2013-07-31 | 南京国能环保工程有限公司 | Treatment method of disc type column membrane water and device |
| CN104984663A (en) * | 2015-06-15 | 2015-10-21 | 黄义忠 | Film casting liquid for PVDF flat membrane and preparing method for PVDF flat membrane |
| CN205216597U (en) * | 2015-12-25 | 2016-05-11 | 成都美富特膜科技有限公司 | Novel water treatment membrane stack |
-
2015
- 2015-12-25 CN CN201510985976.3A patent/CN105413473B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921314A (en) * | 2012-10-25 | 2013-02-13 | 贵阳时代沃顿科技有限公司 | Compound reverse osmosis membrane with interpenetrating network desalting layer and preparation method of membrane |
| CN103224302A (en) * | 2013-04-09 | 2013-07-31 | 南京国能环保工程有限公司 | Treatment method of disc type column membrane water and device |
| CN104984663A (en) * | 2015-06-15 | 2015-10-21 | 黄义忠 | Film casting liquid for PVDF flat membrane and preparing method for PVDF flat membrane |
| CN205216597U (en) * | 2015-12-25 | 2016-05-11 | 成都美富特膜科技有限公司 | Novel water treatment membrane stack |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617865A (en) * | 2016-04-05 | 2016-06-01 | 成都美富特膜科技有限公司 | Novel high-efficiency filtering water treatment membrane stack |
| CN105617865B (en) * | 2016-04-05 | 2018-03-02 | 成都美富特膜科技有限公司 | A kind of water process membrane stack of high efficiency filter |
| CN108771972A (en) * | 2018-05-30 | 2018-11-09 | 江苏八达科技股份有限公司 | A kind of membrane filtration module |
| CN110314552A (en) * | 2019-06-28 | 2019-10-11 | 湖北百清环保技术有限公司 | A kind of stacked ultra-filtration membrane device |
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| Publication number | Publication date |
|---|---|
| CN105413473B (en) | 2018-06-08 |
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