CN210528686U - Aluminum industry wastewater treatment and recycling system - Google Patents
Aluminum industry wastewater treatment and recycling system Download PDFInfo
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- CN210528686U CN210528686U CN201921097940.1U CN201921097940U CN210528686U CN 210528686 U CN210528686 U CN 210528686U CN 201921097940 U CN201921097940 U CN 201921097940U CN 210528686 U CN210528686 U CN 210528686U
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 23
- 238000004064 recycling Methods 0.000 title claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 116
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000002351 wastewater Substances 0.000 claims abstract description 27
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 21
- 239000004411 aluminium Substances 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000010612 desalination reaction Methods 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims description 28
- 239000012510 hollow fiber Substances 0.000 claims description 20
- 238000011001 backwashing Methods 0.000 claims description 17
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000001556 precipitation Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 6
- 238000005374 membrane filtration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to an aluminum industry waste water treatment and recycling system belongs to waste water treatment technical field. Sequentially comprises a precipitation treatment device for carrying out preliminary precipitation treatment on the wastewater; a pre-filtering device at least comprising a multi-medium filter; the ultrafiltration filter device comprises an ultrafiltration membrane filter, an intermediate water tank for receiving produced water and a circulating loop for pumping the water in the intermediate water tank back to the ultrafiltration membrane filter, wherein the circulating loop is provided with a circulating pump; and the reverse osmosis desalination device is composed of at least one reverse osmosis membrane filter, and pure water generated by the reverse osmosis membrane filter is conveyed into the pure water tank, and generated concentrated water is conveyed into the evaporator for evaporation and concentration. Can respond national energy saving and emission reduction policy, reduce the manufacturing cost of enterprise, the utility model discloses carry out the retrieval and utilization with aluminium industry waste water through the membrane system, the reuse water can directly be used for production, concentrated water passes through evaporation filtration, can realize the zero release.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, concretely relates to aluminum industry waste water treatment and recycling system.
Background
In the processes of aluminum alloy production and manufacturing, fine machining and surface treatment of aluminum products, a large amount of waste water is generated, and the waste water contains a large amount of heavy metals and sulfate ions, so that the conventional filtering or flocculating method is difficult to treat and reach the standard, or the phenomena of blockage and the like are easy to occur during use, and the use is limited.
In the prior art, the wastewater is usually directly discharged or treated by a method combining pH value adjustment, biochemistry and flocculation precipitation, and the treated water cannot be recycled and is directly discharged, so that water resources are wasted.
Also prior art is like application number 201720434360.1's chinese utility model patent discloses an aluminium industry effluent disposal system, and it adopts waste water collecting tank, first filtering ponds, pH value equalizing basin, biochemical pond, coagulating sedimentation tank, flocculation basin, sludge impoundment, intermediate tank, sand carbon filtering ponds, membrane filtration pond, reuse pond to handle. The aluminum industry wastewater treatment system has good wastewater treatment effect, the discharged water does not cause pollution to the environment, and the problem that the existing aluminum industry wastewater is difficult to treat is effectively solved; the application number is 201621445843.3's chinese utility model patent discloses an aluminium industry effluent disposal system, it includes first filtering ponds, pH value equalizing basin, biochemical pond, sedimentation tank, second filtering ponds, disinfection pond, detection pond and clean water basin, and it is effectual to handle waste water, and the discharged water does not cause the pollution to the environment, has effectively solved the problem that current aluminium industry waste water is difficult to handle. Still like chinese utility model patent that application number is 201420415798.1 discloses an aluminium industry effluent disposal system, include the equalizing basin that collects aluminium industry waste water, one-level PH equalizing basin, mixed reaction tank, inclined plate sedimentation tank, second grade PH equalizing basin, middle pond, reuse pond and water supply mechanism, its make full use of workshop resource is alkaline waste water and acid wastewater neutralization treatment, with acid-base waste water, the anodic oxidation waste water mixes and carries out acid-base waste water neutralization each other, reaches to treat waste with the useless purpose to effectively reduce the treatment cost thing.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides an aluminium industry effluent disposal and recycling system for the processing of aluminium industry waste water can respond national energy saving and emission reduction policy, reduction enterprise manufacturing cost, the utility model discloses with aluminium industry waste water through the membrane system retrieval and utilization, the reuse water can directly be used for production, concentrated water passes through the evaporation filtration, can realize the zero release.
The utility model provides a technical scheme as follows of above-mentioned problem:
aluminium industry waste water treatment and recycling system according to the treatment order of waste water, contains in proper order:
a precipitation treatment device for carrying out preliminary precipitation treatment on the wastewater;
a pre-filtering device at least comprising a multi-medium filter;
the ultrafiltration filter device comprises an ultrafiltration membrane filter, an intermediate water tank for receiving produced water and a circulating loop for pumping the water in the intermediate water tank back to the ultrafiltration membrane filter, wherein the circulating loop is provided with a circulating pump;
and the reverse osmosis desalination device is composed of at least one reverse osmosis membrane filter, and pure water generated by the reverse osmosis membrane filter is conveyed into the pure water tank, and generated concentrated water is conveyed into the evaporator for evaporation and concentration.
Preferably, in the above technical solution, the pre-filtering device further includes a bag filter for receiving the effluent of the multi-media filter.
Preferably, the ultrafiltration filter device further comprises a backwashing loop, and a backwashing pump is arranged on the backwashing loop and used for pumping the water in the intermediate water tank back to the ultrafiltration filter in a reverse direction to the filtering direction.
The ultrafiltration filter is a U-shaped hollow fiber membrane filtering device, and comprises:
the membrane shell is provided with a water producing port, a concentrated water port and a backwashing discharge port;
an upper end plate disposed in an upper region within the membrane shell;
the central pipe is arranged in the membrane shell and penetrates through the upper end plate, the upper end of the central pipe is provided with a water inlet, and the pipe wall of the central pipe is provided with a first water distribution hole;
the membrane supporting frames are arranged at the position, below the upper end plate, of the central pipe at intervals and communicated with the central pipe, membrane fixing holes and second water distribution holes are formed in the membrane supporting frames, and the opening direction of one part of the second water distribution holes points to the upper end of the membrane shell;
and the two ends of the hollow fiber membrane are fixedly connected to the upper end plate, the two ends of the hollow fiber membrane are communicated with the area above the upper end plate, and the membrane tube of the hollow fiber membrane penetrates through the membrane fixing hole and is limited in the membrane shell.
The up-down direction in the application is the same as the up-down direction in the attached figures 2-4 of the specification.
The central pipe and the membrane support frame are both provided with water distribution holes, and the membrane support frame comprises water distribution holes with partial opening directions pointing to the upper end of the membrane shell, so that water distribution is more uniform, and the problems of different membrane upper and lower stresses and different received concentration differences caused by uneven water distribution of raw material liquid are avoided.
Preferably, in the above technical solution, the water producing port is disposed on an outer wall of the membrane shell, and the outer wall is located on the upper end plate.
Preferably, in the above aspect, the concentrate inlet is provided in an outer wall of the membrane housing, and the outer wall is located below the hollow fiber membrane.
Preferably, the backwash discharge port is provided at the bottom end of the membrane shell.
Preferably, in the above technical solution, the upper end plate is an integrated end plate formed by casting epoxy resin.
Preferably, the lower end of the central tube is closed.
Preferably, the membrane support frame is composed of a plurality of outwardly extending support rods, and the membrane fixing holes and the second water distribution holes are formed in the support rods.
Preferably, according to the above technical scheme, the number of the second water distribution holes on the membrane support frame is gradually increased from top to bottom.
Preferably, according to the above technical scheme, the number of the second water distribution holes pointing to the lower end of the membrane shell along the direction of the opening on the membrane support frame is gradually increased from top to bottom.
Downwards, the quantity of the second water distribution holes of the membrane support frame, the direction of the upper opening of which points to the lower end of the membrane shell, is gradually increased, so that water distribution is more uniform during filtering, aeration during back washing can be more uniform, and the cleaning effect of the aeration on the dirt on the surface of the membrane is better.
Preferably, in the membrane shell, a sewage guide groove is arranged below the hollow fiber membrane, the sewage guide groove is funnel-shaped, the caliber of the sewage guide groove is gradually reduced from top to bottom, the sewage guide groove is particularly used for collecting and removing solid-phase substances (such as metal oxide particles) of a solid-liquid separation system, the substances have high viscosity, and the substances need to be collected and discharged by the guide groove with a guide structure.
Preferably, in the above aspect, the concentrated water of the reverse osmosis membrane filter is sent to a second reverse osmosis membrane filter, pure water produced by the second reverse osmosis membrane filter is sent to a pure water tank, and the produced concentrated water is sent to an evaporator to be evaporated and concentrated.
Preferably, the evaporator is an MVR evaporator.
To sum up, the utility model discloses following beneficial effect has:
the application provides an aluminium industry waste water treatment and recycling system for the processing of aluminium industry waste water can respond national energy saving and emission reduction policy, reduction manufacturing cost of enterprise, the utility model discloses carry out the retrieval and utilization with aluminium industry waste water through membrane system, the reuse water can directly be used for production, and concentrated water passes through tertiary evaporation filtration, can realize the zero release, and its water reuse rate reaches 98%, and all the other 2% are converted into solid useless.
Drawings
FIG. 1 is a schematic view of a system for treating and recycling aluminum industry wastewater;
FIG. 2 is a schematic view of a U-shaped hollow fiber membrane filtration unit;
FIG. 3 is a schematic cross-sectional view of a U-shaped hollow fiber membrane filtration apparatus;
FIG. 4 is a schematic view of a membrane scaffold;
in the figure, a-a precipitation treatment device, b-a pre-filtration device, b-a 1-multi-medium filter, b-a 2-bag filter, c-an ultrafiltration filtration device, c-a 1-an ultrafiltration membrane filter, 1-a membrane shell, 1-a water production port, 1-a 2-a concentrated water port, 1-a 3-a backwashing discharge port, a 2-an upper end plate, a 3-a central pipe, a 3-a 1-a water inlet, a 3-a 2-a first water distribution hole, a 4-a membrane support frame, a 4-a 1-a membrane fixing hole, a 4-a 2-a second water distribution hole, a 4-a 3-supporting rod, a 5-a hollow fiber membrane, a 6-a sewage diversion trench, a c-a 2-an intermediate water tank, a, c-4-backwashing loop, d-reverse osmosis desalination device, d-1-reverse osmosis membrane filter, d-2-pure water tank, d-3-evaporator and d-4-secondary reverse osmosis membrane filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, belong to the protection scope of the present invention.
The present invention will be described in detail by way of examples with reference to the accompanying drawings.
Example 1: referring to fig. 1, the aluminum industry wastewater treatment and recycling system sequentially comprises a precipitation treatment device a, a multi-media filter b-1, a bag filter b-2, an ultrafiltration membrane filter c-1, an intermediate water tank c-2, a reverse osmosis membrane filter d-1 and a pure water tank d-2 according to the wastewater treatment sequence.
Wherein, the agents added in the precipitation treatment device a are PAC and HCL;
referring to fig. 2 to 4, the U-shaped hollow fiber membrane filtration device as an ultrafiltration membrane filter c-1 is composed of a membrane housing 1, an upper end plate 2 arranged in the membrane housing 1, a central tube 3, a plurality of membrane support frames 4 and a U-shaped hollow fiber membrane 5;
the upper part of the membrane shell 1 is provided with a water producing port 1-1, the lower part of the membrane shell is provided with a concentrated water port 1-2 and a backwashing discharge port 1-3, an upper end plate 2 is poured on the upper part of the membrane shell 1 by epoxy resin, the upper end of a central tube 3 is provided with a water inlet 3-1, the central tube 3 penetrates through the upper end plate 2, a plurality of first water distribution holes 3-2 are arranged on a tube body, a plurality of membrane support frames 4 are arranged on the membrane shell, the number of the membrane support frames 4 is usually 3-5, membrane fixing holes 4-1 for limiting a hollow fiber membrane 5 and a plurality of second water distribution holes 4-2 are arranged on the membrane support frames 4, wherein, on a single membrane support frame 4, the number of the second water distribution holes 4-2 and the number of the second water distribution holes 4-2 with the opening direction pointing to the membrane shell 1 are increased from;
the lower part of the membrane shell 1 also comprises a sewage diversion trench which is used for collecting solid-phase substances of concentrated water in the filtering process and discharging the solid-phase substances out of the membrane shell 1;
during filtering, raw water flows in from a water inlet 3-1 of the central pipe 3, flows into the membrane shell 1 through the first water distribution holes 3-2 and the second water distribution holes 4-3, is filtered by the hollow fiber membrane 5, and then is produced through a water producing port 1-1, and concentrated water is discharged from a concentrated water port 1-2;
wherein, concentrated water generated by the ultrafiltration membrane filter c-1 returns to the water inlet 3-1 after circulating through the circulating loop c-3, and the circulation ratio is usually set as 2: 1;
a backwashing loop c-4 is also arranged between the middle water tank c-2 and the ultrafiltration membrane filter c-1, backwashing water enters from the end part of the hollow fiber membrane 5 above the upper end plate 2 after passing through the backwashing loop and is subjected to backwashing, meanwhile, compressed air is introduced into the central pipe 3 and is subjected to backwashing aeration through the first water distribution holes 3-2 and the second water distribution holes 4-3 to wash dirt adhered to the surface of the hollow fiber membrane 5;
wherein, the reverse osmosis membrane filter d-1 is connected with a secondary reverse osmosis membrane filter d-4, the secondary reverse osmosis membrane filter d-4 adopts a high-salt special RO membrane, the treated permeating water is conveyed into a pure water tank d-2, the concentrated water is conveyed into an MVR evaporator d-3 for treatment, the distilled water treated by the MVR evaporator d-3 is conveyed into the pure water tank d-2, and the evaporation residue is treated as hazardous waste.
The aluminum industry wastewater treatment and recycling system is used for treating aluminum industry production wastewater, occupies a floor of about 15 meters multiplied by 7 meters, has an investment cost of about 100 ten thousand yuan RMB and an operation cost of about 1.7 yuan/ton, and can be used for carrying out one-time chemical cleaning in 1-2 months generally during operation.
Wherein, the aluminum industry wastewater contains about 6500mg/l sulfate radical, the chemical oxygen demand is about 80mg/l, the fluorine content is about 10mg/l, and the conductivity exceeds 10000 us/cm;
after treatment, the recovery rate of water resources is about 98%, and finally, no sulfate radical is generated in the produced water, thereby reaching the standard of tap water and having no redundant waste water except for evaporated dangerous waste.
Claims (10)
1. Aluminium industry waste water treatment and recycling system, its characterized in that according to the treatment order of waste water, contains in proper order:
a sedimentation treatment device (a) for carrying out preliminary sedimentation treatment on the wastewater;
a pre-filtering device (b) comprising at least one multi-media filter (b-1);
the ultrafiltration filtering device (c) comprises an ultrafiltration membrane filter (c-1), an intermediate water tank (c-2) for receiving produced water, and a circulating loop (c-3) for pumping the water in the intermediate water tank (c-2) back to the ultrafiltration membrane filter (c-1), wherein the circulating loop (c-3) is provided with a circulating pump;
a reverse osmosis desalination device (d) which is composed of at least one reverse osmosis membrane filter (d-1), wherein the pure water produced by the reverse osmosis membrane filter (d-1) is conveyed into the pure water tank (d-2), and the produced concentrated water is conveyed into the evaporator (d-3) for evaporation and concentration.
2. The aluminum industry wastewater treatment and recycling system of claim 1, wherein: the pre-filtering device (b) also comprises a bag filter (b-2) for receiving the effluent of the multi-medium filter (b-1).
3. The aluminum industry wastewater treatment and recycling system of claim 1, wherein: the ultrafiltration filtering device (c) also comprises a backwashing loop (c-4), wherein a backwashing pump is arranged on the backwashing loop (c-4) and is used for pumping the water in the middle water tank (c-2) back to the ultrafiltration membrane filter (c-1) in a reverse direction with the filtering direction.
4. The aluminum industry wastewater treatment and recycling system of claim 1, wherein: the concentrated water of the reverse osmosis membrane filter (d-1) is delivered to a second reverse osmosis membrane filter (d-4), the pure water produced by the second reverse osmosis membrane filter (d-4) is delivered to a pure water tank (d-2), and the produced concentrated water is delivered to an evaporator (d-3) for evaporation and concentration.
5. The aluminum industry wastewater treatment and reuse system according to claim 1 or 4, wherein: the evaporator (d-3) is an MVR evaporator.
6. The aluminum industry wastewater treatment and recycling system of claim 3, wherein: the ultrafiltration filter device (c) is a U-shaped hollow fiber membrane filter device, and comprises: the membrane comprises a membrane shell (1), wherein a water producing port (1-1), a concentrated water port (1-2) and a backwashing discharge port (1-3) are arranged on the membrane shell (1);
an upper end plate (2) disposed in an upper region within the membrane shell (1);
the central pipe (3) is arranged in the membrane shell (1) and penetrates through the upper end plate (2), a water inlet (3-1) is formed in the upper end of the central pipe (3), and first water distribution holes (3-2) are formed in the pipe wall;
the membrane supporting frames (4) are arranged at the position, below the upper end plate (2), of the central pipe (3) at intervals, the membrane supporting frames (4) are communicated with the central pipe (3), membrane fixing holes (4-1) and second water distribution holes (4-2) are formed in the membrane supporting frames (4), and part of opening directions of the second water distribution holes (4-2) point to the upper end of the membrane shell (1);
and the two ends of the hollow fiber membrane (5) are fixedly connected to the upper end plate (2), the two ends of the hollow fiber membrane are communicated with the area above the upper end plate (2), and a membrane tube of the hollow fiber membrane (5) penetrates through the membrane fixing hole (4-1) and is limited in the membrane shell (1).
7. The aluminum industry wastewater treatment and recycling system of claim 6, wherein: the membrane support frame (4) is composed of a plurality of support rods (4-3) extending outwards, and the membrane fixing holes (4-1) and the second water distribution holes (4-2) are arranged on the support rods (4-3).
8. The aluminum industry wastewater treatment and recycling system of claim 7, wherein: the number of the second water distribution holes (4-2) on the membrane support frame (4) is gradually increased from top to bottom.
9. The aluminum industry wastewater treatment and reuse system according to claim 7 or 8, wherein: according to the sequence from top to bottom, the number of the second water distribution holes (4-2) pointing to the lower end of the membrane shell (1) in the opening direction of the membrane support frame (4) is gradually increased.
10. The aluminum industry wastewater treatment and recycling system of claim 6, wherein: in membrane shell (1), the below of hollow fiber membrane (5) is provided with a filth guiding gutter (6), filth guiding gutter (6) are for leaking hopper-shaped, and its bore is from last to dwindling gradually down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921097940.1U CN210528686U (en) | 2019-07-15 | 2019-07-15 | Aluminum industry wastewater treatment and recycling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921097940.1U CN210528686U (en) | 2019-07-15 | 2019-07-15 | Aluminum industry wastewater treatment and recycling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253709A (en) * | 2021-04-30 | 2022-11-01 | 天津膜天膜科技股份有限公司 | High-recovery-rate operation system for hollow fiber nanofiltration membrane |
| CN119053557A (en) * | 2022-04-26 | 2024-11-29 | 栗田工业株式会社 | Water treatment plant and method for operating a water treatment plant |
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2019
- 2019-07-15 CN CN201921097940.1U patent/CN210528686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253709A (en) * | 2021-04-30 | 2022-11-01 | 天津膜天膜科技股份有限公司 | High-recovery-rate operation system for hollow fiber nanofiltration membrane |
| CN119053557A (en) * | 2022-04-26 | 2024-11-29 | 栗田工业株式会社 | Water treatment plant and method for operating a water treatment plant |
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