CN216654099U - Device for preventing ultrafiltration backwashing water from being polluted - Google Patents
Device for preventing ultrafiltration backwashing water from being polluted Download PDFInfo
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- CN216654099U CN216654099U CN202122646283.5U CN202122646283U CN216654099U CN 216654099 U CN216654099 U CN 216654099U CN 202122646283 U CN202122646283 U CN 202122646283U CN 216654099 U CN216654099 U CN 216654099U
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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
Abstract
The utility model discloses a device for preventing ultrafiltration backwashing water from being polluted, which relates to the technical field of water treatment and comprises a first water production unit, a second water production unit, a flushing unit and a controller, wherein the first water production unit and the second water production unit are connected in parallel, the flushing unit is respectively connected with the first water production unit and the second water production unit, and the first water production unit, the second water production unit and the flushing unit are respectively and electrically connected with the controller. The utility model is provided with two water making systems which are installed in parallel, the alternating operation is controlled by the controller, when the ultrafiltration membrane of one water making system needs backwashing, the other water making system works, when meeting the daily requirement of ultrafiltration water production, a part of ultrafiltration water is used as backwashing water, the cleanliness of the backwashing water is effectively ensured, the washing effect is improved, the secondary pollution is avoided, the service life and the replacement period of the ultrafiltration membrane are prolonged, the long-term stability of the water quality of the produced water is ensured, and the trouble and the cost of frequently replacing the ultrafiltration membrane are avoided.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a device for preventing ultrafiltration backwashing water from being polluted.
Background
Ultrafiltration is a physical screening process with less energy consumption and higher efficiency, which can purify and separate solution, in recent years, ultrafiltration is widely applied to the field of water treatment, and ultrafiltration technology plays an increasingly important role in the fields of reverse osmosis pretreatment, drinking water treatment, reclaimed water recycling and the like, but in the process of pure water treatment, because pollutants in raw water are deposited on the surface of a membrane or in membrane pores to form membrane pollution, the blockage of the ultrafiltration membrane is caused, the water yield is reduced or the transmembrane pressure difference is increased, and at the moment, the backwashing operation of the ultrafiltration membrane is needed;
in the conventional backwashing method, the produced water of an ultrafiltration system is used as backwashing water, but in practical application, when the ultrafiltration membrane needs backwashing operation, the ultrafiltration membrane is polluted to cause reduction of filtration capacity, and the generated backwashing ultrafiltration water is polluted, so that pollutants on the surface of the ultrafiltration membrane cannot be effectively cleared when the polluted ultrafiltration water is used for backwashing, even secondary pollution to the ultrafiltration membrane can be caused, and the subsequent water production effect of the ultrafiltration membrane is influenced, so that the service life of the ultrafiltration membrane is shortened, the ultrafiltration membrane is frequently replaced, the use cost is increased, in addition, when the ultrafiltration membrane is used for backwashing, the water production work of the ultrafiltration membrane needs to be stopped, and if the backwashing time is too long, ultrafiltration water cannot be produced for a long time, and the production and the life are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a device for preventing ultrafiltration backwashing water from being polluted.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a prevent device of ultrafiltration backwashing water pollution, includes first system water unit, second system water unit, flushing unit and controller, and first system water unit and second system water unit pass through pipeline parallel connection, and the flushing unit passes through the pipeline and is connected with first system water unit and second system water unit respectively, and first system water unit, second system water unit and flushing unit are connected with the controller electricity respectively.
Preferably, the first water production unit comprises a first ultrafiltration membrane assembly, a first water inlet pipeline and a first water production pipeline, the first ultrafiltration membrane assembly comprises a first water inlet, a first water production port and a first concentrated water port, the first water inlet pipeline is connected with the first water inlet, a first water inlet electric control valve and a first water inlet pressure sensor are sequentially arranged on the first water inlet pipeline, the first water production pipeline is connected with the first water production port, a first water outlet pressure sensor and a first water outlet electric control valve are sequentially arranged on the first water production pipeline, and the first water inlet electric control valve, the first water inlet pressure sensor, the first water outlet pressure sensor and the first water outlet electric control valve are electrically connected with the controller.
Preferably, the second water production unit comprises a second ultrafiltration membrane assembly, a second water inlet pipeline and a second water production pipeline, the second ultrafiltration membrane assembly comprises a second water inlet, a second water production port and a second concentrated water port, the second water inlet pipeline is connected with the second water inlet, a second water inlet electric control valve and a second water inlet pressure sensor are sequentially arranged on the second water inlet pipeline, the second water production pipeline is connected with the second water production port, a second water outlet pressure sensor and a second water outlet electric control valve are sequentially arranged on the second water production pipeline, and the second water inlet electric control valve, the second water inlet pressure sensor, the second water outlet pressure sensor and the second water outlet electric control valve are electrically connected with the controller.
Preferably, the flushing unit comprises an ultrafiltration water tank, an ultrafiltration backwashing pump and a backwashing pipeline, the ultrafiltration water tank is respectively connected with the first water production pipeline and the second water production pipeline, a first ultrafiltration water electric control valve is arranged between the ultrafiltration water tank and the first water production pipeline, a second ultrafiltration water electric control valve is arranged between the ultrafiltration water tank and the second water production pipeline, a water inlet of the ultrafiltration backwashing pump is communicated with the ultrafiltration water tank, a water outlet of the ultrafiltration backwashing pump is connected with the backwashing pipeline, the backwashing pipeline comprises a first flushing pipeline and a second flushing pipeline which are connected in parallel, the first flushing pipeline is arranged between the water outlet of the ultrafiltration backwashing pump and the first water production port, a first backwashing electric control valve is arranged on the first flushing pipeline, the second flushing pipeline is arranged between the water outlet of the ultrafiltration backwashing pump and the second water production port, a second backwashing electric control valve is arranged on the second flushing pipeline, the ultrafiltration backwashing pump, The second recoil electric control valve and the first recoil electric control valve are both electrically connected with the controller.
Preferably, a first water inlet pressure gauge is arranged on the first water inlet pipeline, a first water outlet pressure gauge is arranged on the first water production pipeline, a second water inlet pressure gauge is arranged on the second water inlet pipeline, and a second water outlet pressure gauge is arranged on the second water production pipeline.
Preferably, a liquid level meter is arranged in the ultrafiltration water tank and is electrically connected with the controller.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model is provided with a first water production unit and a second water production unit which share two water production systems, the two water production systems are installed in a parallel mode and are controlled by a controller to work alternately, when the ultrafiltration membrane of one water production system needs backwashing, the controller controls the water production system to stop working and enables the other water production system to start working, when daily needed ultrafiltration water production water is met, a part of ultrafiltration water can be injected into the ultrafiltration water tank to be used as backwashing water, the cleanliness of the backwashing water is effectively ensured, the backwashing effect is improved, secondary pollution to the ultrafiltration membrane is avoided, the service life and the replacement period of the ultrafiltration membrane are prolonged, the long-term stability of the water quality of the produced water is ensured, and the trouble and cost of frequently replacing the ultrafiltration membrane are avoided.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a first ultrafiltration membrane module; 2. a first water inlet electric control valve; 3. a first inlet water pressure sensor; 4. a first water inlet pressure gauge; 5. a first water outlet pressure gauge; 6. a first water outlet pressure sensor; 7. a first ultrafiltration water electric control valve; 8. a first water outlet electric control valve; 9. an ultrafiltration water tank; 10. a liquid level meter; 11. a second ultrafiltration water electric control valve; 12. a second water outlet electric control valve; 13. a second ultrafiltration membrane module; 14. a second effluent pressure sensor; 15. a second water outlet pressure gauge; 16. a second inlet water pressure sensor; 17. a second water inlet pressure gauge; 18. a second water inlet electric control valve; 19. an ultrafiltration backwash pump; 20. a second recoil electric control valve; 21. a first recoil electrically controlled valve; 22. a controller; 23. a first water inlet; 24. a first water producing port; 25. a first concentrate port; 26. a second water inlet; 27. a second water producing port; 28. and a second concentrate outlet.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings.
Referring to fig. 1, a device for preventing ultrafiltration backwashing water from being polluted comprises a first water production unit, a second water production unit, a flushing unit and a controller 22, wherein the first water production unit and the second water production unit are connected in parallel through a pipeline, the flushing unit is respectively connected with the first water production unit and the second water production unit, the first water production unit, the second water production unit and the flushing unit are respectively electrically connected with the controller 22, and the controller 22 controls the start and stop of the first water production unit, the second water production unit and the flushing unit;
the first water production unit comprises a first ultrafiltration membrane component 1, a first water inlet pipeline and a first water production pipeline, the first ultrafiltration membrane component 1 comprises a first water inlet 23, a first water production port 24 and a first concentrated water port 25, the first water inlet pipeline is connected in front of the first water inlet 23, a first water inlet electric control valve 2 and a first water inlet pressure sensor 3 are sequentially installed on the first water inlet pipeline, the first water production pipeline is connected with the first water production port 24, a first water outlet pressure sensor 6 and a first water outlet electric control valve 8 are sequentially installed on the first water production pipeline, the first water inlet electric control valve 2, the first water inlet pressure sensor 3, the first water outlet pressure sensor 6 and the first water outlet electric control valve 8 are respectively and electrically connected with a controller 22, the first water inlet pressure sensor 3 and the first water outlet pressure sensor 6 are respectively used for detecting the pressure in the first water inlet pipeline and the first water production pipeline and feeding back pressure signals to the controller 22, the controller 22 compares the pressure values before and after the first ultrafiltration membrane assembly 1 to determine the pollution condition of the first ultrafiltration membrane assembly 1, when the pressure difference reaches a set range, the controller 22 controls the first water production unit to stop working, a first water inlet pressure gauge 4 is further installed on the first water inlet pipeline to facilitate manual observation of the pressure value of the first water inlet pipeline, and a first water outlet pressure gauge 5 is installed on the first water production pipeline to facilitate manual observation of the pressure value of the first water production pipeline;
the second water production unit comprises a second ultrafiltration membrane assembly 13, a second water inlet pipeline and a second water production pipeline, the second ultrafiltration membrane assembly 13 comprises a second water inlet 26, a second water production port 27 and a second concentrated water port 28, the second water inlet pipeline is connected to the second water inlet 26, a second water inlet electric control valve 18 and a second water inlet pressure sensor 16 are sequentially installed on the second water inlet pipeline, the second water production pipeline is connected to the second water production port 27, a second water outlet pressure sensor 14 and a second water outlet electric control valve 12 are sequentially installed on the second water production pipeline, the second water inlet electric control valve 18, the second water inlet pressure sensor 16, the second water outlet pressure sensor 14 and the second water outlet electric control valve 12 are all electrically connected with the controller 22, the second water inlet pressure sensor 16 and the second water outlet pressure sensor 14 are respectively used for detecting the pressure in the second water inlet pipeline and the second water production pipeline and feeding back pressure value signals to the controller 22, the controller 22 compares the pressure values before and after the second ultrafiltration membrane assembly 13 to determine the pollution condition of the second ultrafiltration membrane assembly 13, when the pressure difference reaches a set range, the controller 22 controls the second water production unit to stop working, a second water inlet pressure gauge 17 is further installed on the second water inlet pipeline to facilitate manual observation of the pressure value of the second water inlet pipeline, and a second water outlet pressure gauge 15 is installed on the second water production pipeline to facilitate manual observation of the pressure value of the second water production pipeline;
the flushing unit comprises an ultrafiltration water tank 9, an ultrafiltration backwash pump 19 and a backwash pipeline, wherein the ultrafiltration water tank 9 is used for storing ultrafiltration water for backwash, a liquid level meter 10 is installed in the ultrafiltration water tank 9, the liquid level meter 10 is used for controlling the water quantity in the ultrafiltration water tank 9, the liquid level meter 10 is electrically connected with a controller 22, the controller 22 controls the start and stop of water injection into the ultrafiltration water tank 9 according to the signal of the liquid level meter 10, the ultrafiltration water tank 9 is respectively connected with a first water production pipeline and a second water production pipeline, a first ultrafiltration water electric control valve 7 is installed between the ultrafiltration water tank 9 and the first water production pipeline, the first ultrafiltration water electric control valve 7 is positioned in front of the first water outlet electric control valve 8, after the first ultrafiltration water outlet electric control valve 8 is closed, the first ultrafiltration water electric control valve 7 can be controlled to be opened to inject ultrafiltration water into the ultrafiltration water tank 9, and a second ultrafiltration water electric control valve 11 is installed between the ultrafiltration water tank 9 and the second water production pipeline, the second ultrafiltration water electric control valve 11 is positioned in front of the second water outlet electric control valve 12, when the second water outlet electric control valve 12 is closed, the second ultrafiltration water electric control valve 11 can still be controlled to be opened to inject ultrafiltration water into the ultrafiltration water tank 9, the water inlet of the ultrafiltration backwashing pump 19 is communicated with the ultrafiltration water tank 9, the water outlet backwashing pipeline of the ultrafiltration backwashing pump 19 is connected with the backwashing pipeline, the backwashing pipeline comprises a first flushing pipeline and a second flushing pipeline which are connected in parallel, the first flushing pipeline is installed between the water outlet of the ultrafiltration backwashing pump 19 and the first water production port 24, the first backwashing electric control valve 21 is installed on the first flushing pipeline, the second flushing pipeline is installed between the water outlet of the ultrafiltration backwashing pump 19 and the second water production port 27, the second backwashing valve 20 is installed on the second flushing pipeline, the ultrafiltration backwashing pump 19, the second backwashing pump 20 and the first backwashing electric control valve 21 are all electrically connected with the controller 22, and the controller 22 is used for respectively controlling the start and stop of the ultrafiltration backwashing pump 19, and the second backwashing valve 20 and the first backwashing valve 20 The flushing electric valve 21 is opened and closed.
When the device is used, the controller 22 controls the first water making unit to be in a working state, the second water making unit is in a standby state, at the moment, the first water inlet electric control valve 2 and the first water outlet electric control valve 8 are opened, the second water outlet electric control valve 12, the second water inlet electric control valve 18, the first ultrafiltration water electric control valve 7, the second ultrafiltration water electric control valve 11, the first backwashing electric control valve 21 and the second backwashing electric control valve 20 are all in a closed state, raw water is filtered by the first ultrafiltration membrane assembly 1 to generate ultrafiltration water, the ultrafiltration water is discharged by the first water outlet electric control valve 8, the filtered concentrated water is discharged for other purposes by the first concentrated water port 25, when the controller 22 detects that the pressure difference value between the first water inlet pressure sensor 3 and the first water outlet pressure sensor 6 is increased, the first water inlet electric control valve 2 and the first water outlet electric control valve 8 are closed, the second water inlet electric control valve 18, the second water outlet electric control valve 12 and the second backwashing water control valve 11 are opened, when the level meter 10 detects that the water level in the ultrafiltration water tank 9 reaches an effective value, the second ultrafiltration water electronic control valve 11 is closed, the ultrafiltration backwashing pump 19 and the first backwashing electronic control valve 21 are opened, ultrafiltration water in the ultrafiltration water tank 9 enters the first ultrafiltration membrane component 1 from the first water production port 24 after being pressurized by the ultrafiltration backwashing pump 19, and is subjected to backwashing on the first ultrafiltration membrane component 1 to clean impurities adsorbed in the first ultrafiltration membrane component 1 and relieve pollution; when the water making capacity of the second water making unit is reduced, the first water making unit is switched back to work, and the second ultrafiltration membrane component 13 is backwashed in a similar mode, so that the backwashed water is ensured to be ultrafiltered, the ultrafiltration membrane is effectively prevented from being polluted and damaged by the backwashed water, the service life of the membrane is prolonged, the cost is reduced, and one path of water making unit can be ensured to work during the backwashing, so that the use requirement is met.
It should be particularly noted that, in the embodiment of the present invention, the first ultrafiltration membrane module 1, the first water inlet electronic control valve 2, the first water inlet pressure sensor 3, the first water inlet pressure gauge 4, the first water outlet pressure gauge 5, the first water outlet pressure sensor 6, the first ultrafiltration water electronic control valve 7, the first water outlet electronic control valve 8, the liquid level meter 10, the second ultrafiltration water electronic control valve 11, the second water outlet electronic control valve 12, the second ultrafiltration membrane module 13, the second water outlet pressure sensor 14, the second water outlet pressure gauge 15, the second water inlet pressure sensor 16, the second water inlet pressure gauge 17, the second water inlet electronic control valve 18, the ultrafiltration backwashing pump 19, the second backwashing electronic control valve 20, the first backwashing electronic control valve 21, and the controller 22 are all implemented by the prior art.
In the description of this patent, it is to be understood that the terms "upper", "lower", "inner", "outer", "center", and the like, are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience in describing the patent and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore should not be taken as limiting the patent.
In this patent, unless expressly stated or limited otherwise, the terms "combined," "disposed," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, releasably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, or they may be connected internally or in an interactive relationship with each other, and unless otherwise specifically limited, the specific meaning of the above terms in this patent will be understood by those skilled in the art according to the specific circumstances.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. An apparatus for preventing contamination of ultrafiltration backwash water, characterized by: including first system water unit, second system water unit, flushing unit and controller (22), first system water unit and second system water unit pass through pipeline parallel connection, the flushing unit passes through the pipeline respectively with first system water unit and second system water unit connection, first system water unit, second system water unit and flushing unit are connected with controller (22) electricity respectively.
2. The apparatus for preventing contamination of ultrafiltration backwash water as recited in claim 1, wherein: first system water unit includes first milipore filter subassembly (1), first water intake pipe and first product water pipeline, first milipore filter subassembly (1) includes first water inlet (23), first product mouth of a river (24) and first dense mouth of a river (25), first water intake pipe with first water inlet (23) are connected, have set gradually first automatically controlled valve of intaking (2) and first pressure sensor (3) on the first water intake pipe, first product water pipeline with first product mouth of a river (24) are connected, have set gradually first play water pressure sensor (6) and first play water automatically controlled valve (8) on the first product water pipeline, and first automatically controlled valve of intaking (2), first pressure sensor of intaking (3), first play water pressure sensor (6) and first play water automatically controlled valve (8) all are connected with controller (22) electricity.
3. The apparatus for preventing contamination of ultrafiltration backwash water as recited in claim 2, wherein: the second water production unit comprises a second ultrafiltration membrane assembly (13), a second water inlet pipeline and a second water production pipeline, the second ultrafiltration membrane assembly (13) comprises a second water inlet (26), a second water production port (27) and a second concentrated water production port (28), the second water inlet pipeline is connected with the second water inlet (26), a second water inlet electric control valve (18) and a second water inlet pressure sensor (16) are sequentially arranged on the second water inlet pipeline, the second water production pipeline is connected with the second water production port (27), a second water outlet pressure sensor (14) and a second water outlet electric control valve (12) are sequentially arranged on the second water production pipeline, and the second water inlet electric control valve (18), the second water inlet pressure sensor (16), the second water outlet pressure sensor (14) and the second water outlet electric control valve (12) are all electrically connected with the controller (22).
4. The apparatus for preventing contamination of ultrafiltration backwash water as in claim 3, wherein: the washing unit comprises an ultrafiltration water tank (9), an ultrafiltration backwashing pump (19) and a backwashing pipeline, the ultrafiltration water tank (9) is respectively connected with a first water production pipeline and a second water production pipeline, a first ultrafiltration water electric control valve (7) is arranged between the ultrafiltration water tank (9) and the first water production pipeline, a second ultrafiltration water electric control valve (11) is arranged between the ultrafiltration water tank (9) and the second water production pipeline, a water inlet of the ultrafiltration backwashing pump (19) is communicated with the ultrafiltration water tank (9), a water outlet of the ultrafiltration backwashing pump (19) is connected with the backwashing pipeline, the backwashing pipeline comprises a first washing pipeline and a second washing pipeline which are connected in parallel, the first washing pipeline is arranged between a water outlet of the ultrafiltration backwashing pump (19) and a first water production port (24), the first washing pipeline is provided with a first backwashing electric control valve (21), the second washing pipeline is arranged between a water outlet of the ultrafiltration backwashing pump (19) and a second water production port (27), a second backflushing electric control valve (20) is arranged on the second flushing pipeline, and the ultrafiltration backwashing pump (19), the second backflushing electric control valve (20) and the first backflushing electric control valve (21) are all electrically connected with the controller (22).
5. The apparatus for preventing contamination of ultrafiltration backwash water as in claim 4, wherein: the water pump is characterized in that a first water inlet pressure gauge (4) is arranged on the first water inlet pipeline, a first water outlet pressure gauge (5) is arranged on the first water production pipeline, a second water inlet pressure gauge (17) is arranged on the second water inlet pipeline, and a second water outlet pressure gauge (15) is arranged on the second water production pipeline.
6. The apparatus for preventing contamination of ultrafiltration backwash water as recited in claim 5, wherein: a liquid level meter (10) is arranged in the ultrafiltration water tank (9), and the liquid level meter (10) is electrically connected with a controller (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646283.5U CN216654099U (en) | 2021-11-01 | 2021-11-01 | Device for preventing ultrafiltration backwashing water from being polluted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646283.5U CN216654099U (en) | 2021-11-01 | 2021-11-01 | Device for preventing ultrafiltration backwashing water from being polluted |
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| Publication Number | Publication Date |
|---|---|
| CN216654099U true CN216654099U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122646283.5U Active CN216654099U (en) | 2021-11-01 | 2021-11-01 | Device for preventing ultrafiltration backwashing water from being polluted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216654099U (en) |
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2021
- 2021-11-01 CN CN202122646283.5U patent/CN216654099U/en active Active
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