CN220677404U - Offline cleaning equipment for reverse osmosis membrane - Google Patents
Offline cleaning equipment for reverse osmosis membrane Download PDFInfo
- Publication number
- CN220677404U CN220677404U CN202322287001.6U CN202322287001U CN220677404U CN 220677404 U CN220677404 U CN 220677404U CN 202322287001 U CN202322287001 U CN 202322287001U CN 220677404 U CN220677404 U CN 220677404U
- Authority
- CN
- China
- Prior art keywords
- water tank
- cleaning
- water
- reverse osmosis
- pressure
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 102
- 239000012528 membrane Substances 0.000 title claims abstract description 61
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 167
- 238000005406 washing Methods 0.000 claims abstract description 18
- 238000005554 pickling Methods 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 12
- 239000012459 cleaning agent Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 5
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a reverse osmosis membrane off-line cleaning device which comprises a cleaning water tank, a cleaning water pump, a security filter, an air compressor, a pressure container, and necessary valves and pipelines. The cleaning water tank comprises a pickling water tank and an alkaline water tank, each cleaning water tank is provided with two addition ports of desalted water and cleaning agent, and a sewage discharge valve is arranged below each cleaning water tank; the cleaning link is added with air cleaning, and compressed air with certain pressure can be regulated to be injected into the pressure container; the pressure vessels are connected in parallel, each pressure vessel can be provided with 1 membrane, and the inlet end of each pressure vessel is provided with a water inlet control valve which can control the water inlet of a single pressure vessel. According to the utility model, the plurality of pressure containers are arranged, so that the plurality of reverse osmosis membranes can be cleaned at the same time, and the method is suitable for offline cleaning of a large number of reverse osmosis membranes; by adding air washing, the impact effect on dirt inside the reverse osmosis membrane is increased, and the cleaning effect is improved; through designing two wash water tanks, can effectively practice thrift the washing medicament.
Description
Technical Field
The utility model relates to the technical field of reverse osmosis membranes, in particular to a device for offline cleaning of a plurality of reverse osmosis membranes.
Background
The reverse osmosis membrane water treatment process is considered to be one of the most effective technologies for water desalination at present, but pollution by microorganisms, inorganic salt scale, colloid, metal oxide and the like cannot be avoided in the normal operation process of the reverse osmosis membrane. These substances, if deposited on the membrane surface, will cause an increase in the reverse osmosis unit transmembrane pressure differential and a decrease in desalination rate. Therefore, in order to restore good desalination performance of the reverse osmosis membrane, the membrane needs to be chemically cleaned.
At present, the cleaning modes of the reverse osmosis membrane comprise online cleaning and offline cleaning. The on-line cleaning is adopted when the membrane is polluted just to a low degree or maintenance cleaning is carried out, so that the time for loading and unloading the membrane and the corresponding cost can be saved. However, online cleaning has the problems that the membrane is likely to be polluted by secondary pollution, the membrane cleaning flow is low, and parameters such as the concentration and the temperature of the liquid medicine are difficult to ensure. Therefore, once the membrane is found to have been contaminated, it is typically cleaned off-line. The common off-line cleaning means is to use special off-line cleaning equipment to clean the membrane element. Through the off-line cleaning technology, the flux of the reverse osmosis membrane can be basically recovered, the pressure difference between the inlet and outlet of the pressure vessel is obviously reduced, the service life of the reverse osmosis membrane is prolonged, and the method has important practical significance for improving the working efficiency of a reverse osmosis membrane system.
At present, the offline cleaning equipment of reverse osmosis membranes is quite many, but the offline cleaning equipment can not meet the requirement of simultaneously cleaning reverse osmosis membranes with a large number, and the cleaning modes all adopt hydraulic cleaning, so that some refractory pollutants can not be removed.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to provide the off-line cleaning equipment for the reverse osmosis membrane by adopting gas washing.
An off-line cleaning device for reverse osmosis membrane, which comprises a cleaning water tank, a cleaning water pump, a valve and a pipeline,
the reverse osmosis membrane off-line cleaning equipment comprises a cleaning water tank, a cleaning water pump, a security filter, an air compressor, a pressure container, necessary valves and pipelines;
the cleaning water tank comprises a pickling water tank and an alkaline water tank which are connected in parallel, the pickling water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the pickling water tank; the alkaline water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the alkaline water tank; the acid washing water tank and the alkali washing water tank are connected with a heating device;
a security filter is connected to the water outlet pipeline of the cleaning water tank; the outlet of the cartridge filter is connected with a pressure container assembly; the pressure vessel assembly is provided with a plurality of pressure vessels connected in parallel, each pressure vessel is internally provided with a support membrane, and the inlet end of each pressure vessel is provided with a water inlet control valve; the pressure container is respectively connected with a water production pipeline and a concentrated water pipeline, and the water production pipeline and the concentrated water pipeline are both connected with the cleaning water tank; an air compressor is arranged on a pipeline between the cartridge filter and the pressure vessel.
The cleaning link is added with air cleaning, and compressed air with certain pressure can be regulated to be injected into the pressure container; the pressure vessels are connected in parallel, each pressure vessel can be provided with 1 membrane, and the inlet end of each pressure vessel is provided with a water inlet control valve which can control the water inlet of a single pressure vessel.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein cleaning water pumps are respectively arranged on water outlet pipelines of a pickling water tank and an alkaline water tank, and the cleaning water pumps are connected with a security filter.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein pH meters are connected to an acid washing water tank and an alkaline washing water tank.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein a thermometer is arranged on each of an acid washing water tank and an alkali washing water tank.
The utility model relates to reverse osmosis membrane off-line cleaning equipment, wherein the pickling water tank and the alkaline washing water tank are connected with liquid level meters.
The utility model relates to a reverse osmosis membrane off-line cleaning device, wherein an air compressor is connected with an air pressure control valve.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein the number of pressure vessels is 20-40. The pressure vessel is provided with a water inlet pressure gauge in front.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein a water production control valve and a concentrated water control valve are respectively arranged on connecting pipelines of a pressure container, a water production pipeline and a concentrated water pipeline. Each pressure container is provided with a corresponding water production control valve and a corresponding concentrated water control valve.
The utility model relates to offline cleaning equipment for a reverse osmosis membrane, wherein a produced water sampling valve, a produced water pressure meter and a flowmeter are arranged on a produced water pipeline.
The utility model relates to a reverse osmosis membrane off-line cleaning device, wherein a concentrated water pressure meter and a flowmeter are arranged on a concentrated water pipeline.
The beneficial effects are that:
according to the utility model, the plurality of pressure containers are arranged, so that the plurality of reverse osmosis membranes can be cleaned at the same time, and the method is suitable for offline cleaning of a large number of reverse osmosis membranes; by adding air washing, the impact effect on dirt inside the reverse osmosis membrane is increased, and the cleaning effect is improved; through designing two wash water tanks, can effectively practice thrift the washing medicament.
Drawings
FIG. 1 is a schematic view of one embodiment of the membrane element offline cleaning apparatus of the present utility model.
In the figure, 1, a desalted water inlet valve; 2. a cleaning agent water inlet valve; 3. a pH meter; 4. a thermometer; 5. cleaning the water tank; 6. a heater; 7. a sewage discharge valve; 8. water outlet valve of water tank; 9. cleaning a water pump; 10. an air pressure control valve; 11. an air compressor; 12. a water inlet pressure gauge; 13. a pressure vessel; 14. a water inlet control valve; 15. a produced water sampling valve; 16. a water production control valve; 17. a water production pressure gauge; 18. a water production flowmeter; 19. a concentrated water flowmeter; 20. a concentrated water tension meter; 21. a cartridge filter; 22. a concentrated water control valve.
Detailed Description
Specific embodiments of the present utility model are described in further detail below with reference to the accompanying drawings.
The cleaning water tank 5 is connected with the pressure container 13 through a water outlet pipeline, the water outlet pipeline is consistent with the water flow direction, and the cleaning water pump 9, the cartridge filter 21 and the pressure gauge are sequentially arranged until the cleaning water enters the pressure container 13, and an air compressor 11 is arranged in the pipeline between the cartridge filter 21 and the pressure container 13. The cleaning water tank 5 comprises a pickling water tank and an alkaline water tank which are connected in parallel, the pickling water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the pickling water tank; the alkaline water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the alkaline water tank; and the pickling water tank and the alkaline water tank are connected with a heating device.
The pressure vessels are connected in parallel, a reverse osmosis membrane element is placed in each pressure vessel, the inlet of each pressure vessel is connected with a water inlet pipeline, and the outlet of each pressure vessel is respectively connected with a water production pipeline and a concentrated water pipeline. The water inlet pipeline, the water production pipeline and the concentrated water pipeline are all provided with regulating valves, and the water production pipeline is additionally provided with sampling valves.
The water producing pipeline and the concentrated water pipeline of the pressure containers are respectively connected with the cleaning water tank 5 and are provided with a pressure gauge and a flowmeter.
And in the preparation stage before chemical cleaning, the reverse osmosis membrane element is installed in a pressure container, a desalted water inlet valve is opened, industrial water is supplemented into a cleaning water tank, and a 10 mu m filter element is supplemented into a cartridge filter.
And (3) chemical cleaning: and opening a water inlet valve of the cleaning agent to prepare alkaline or acidic cleaning liquid. And (3) starting a heater to heat the cleaning liquid, closing a desalted water inlet valve and a cleaning agent inlet valve after the temperature and the pH value of the solution reach the design requirements, opening a water tank outlet valve of an alkali cleaning water tank or a pickling water tank, and simultaneously opening a control valve and an air compressor to clean the inner membrane element of the pressure container. Starting timing when cleaning, closing the control valve and the air compressor after the timing time reaches the water-air cleaning set time, and continuing cleaning. After the timing time reaches the set cleaning time, the cleaning water pump is closed, the sewage discharge valve is opened, the cleaning waste liquid is discharged, and when the liquid level meter displays a low liquid level, the sewage discharge valve is closed.
And (3) flushing: and (3) opening a demineralized water inlet valve, supplementing industrial water to the cleaning water tank, starting the cleaning water pump, timing, closing the cleaning water pump after the timing time reaches the set flushing time, opening a sewage discharge valve, and closing the sewage discharge valve when the liquid level meter displays a low liquid level, wherein chemical cleaning is finished.
In the cleaning process, through adjusting the water inlet valve, the water production flowmeter and the concentrate flowmeter are detected simultaneously, and the proper cleaning flow is adjusted.
In the cleaning process, through the water inlet control valve, the water production control valve and the concentrated water control valve of each pressure container, the water inlet pressure gauge, the water production pressure gauge and the concentrated water pressure gauge are detected at the same time, and the proper cleaning pressure is regulated.
In the cleaning process, the targeted chemical cleaning of the membrane elements with different fouling degrees can be realized by adjusting the cleaning flow distribution of different membrane shells.
Claims (10)
1. The utility model provides a reverse osmosis membrane off-line cleaning equipment, includes washs water tank and washs water pump, valve and pipeline, its characterized in that:
the reverse osmosis membrane off-line cleaning equipment comprises a cleaning water tank, a cleaning water pump, a security filter, an air compressor, a pressure container, necessary valves and pipelines;
the cleaning water tank comprises a pickling water tank and an alkaline water tank which are connected in parallel; the pickling water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the pickling water tank; the alkaline water tank is provided with a desalted water adding port and a cleaning agent adding port, and a sewage discharge valve is arranged below the alkaline water tank; the acid washing water tank and the alkali washing water tank are connected with a heating device;
a security filter is connected to the water outlet pipeline of the cleaning water tank; the outlet of the cartridge filter is connected with a pressure container assembly; the pressure vessel assembly is provided with a plurality of pressure vessels connected in parallel, each pressure vessel is internally provided with a support membrane, and the inlet end of each pressure vessel is provided with a water inlet control valve; the pressure container is respectively connected with a water production pipeline and a concentrated water pipeline, and the water production pipeline and the concentrated water pipeline are both connected with the cleaning water tank; an air compressor is arranged on a pipeline between the cartridge filter and the pressure vessel.
2. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the water outlet pipelines of the acid washing water tank and the alkali washing water tank are respectively provided with a cleaning water pump, and the cleaning water pumps are connected with a security filter.
3. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the acid washing water tank and the alkali washing water tank are connected with pH meters.
4. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the pickling water tank and the alkaline water tank are both provided with thermometers.
5. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the pickling water tank and the alkaline water tank are connected with liquid level meters.
6. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: the air compressor is connected with an air pressure control valve.
7. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: the number of the pressure vessels is 20-40.
8. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the connecting pipelines of the pressure container, the water production pipeline and the concentrated water pipeline are respectively provided with a water production control valve and a concentrated water control valve.
9. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and the water production pipeline is provided with a water production sampling valve, a water production pressure gauge and a flowmeter.
10. The offline cleaning device for reverse osmosis membranes according to claim 1, wherein: and a concentrated water pressure meter and a flowmeter are arranged on the concentrated water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287001.6U CN220677404U (en) | 2023-08-24 | 2023-08-24 | Offline cleaning equipment for reverse osmosis membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287001.6U CN220677404U (en) | 2023-08-24 | 2023-08-24 | Offline cleaning equipment for reverse osmosis membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220677404U true CN220677404U (en) | 2024-03-29 |
Family
ID=90371580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322287001.6U Active CN220677404U (en) | 2023-08-24 | 2023-08-24 | Offline cleaning equipment for reverse osmosis membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220677404U (en) |
-
2023
- 2023-08-24 CN CN202322287001.6U patent/CN220677404U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202010520U (en) | Off-line cleaning device for reverse osmosis membrane | |
| CN102674590A (en) | Method for treating and recycling heavy metal wastewater by double-membrane process | |
| CN204897562U (en) | Full -automatic intelligent pure water device | |
| CN102448574A (en) | Washing device for water treatment apparatus and washing method thereof | |
| CN107879524A (en) | Can online backwashing reverse osmosis water treatment system | |
| CN220677404U (en) | Offline cleaning equipment for reverse osmosis membrane | |
| CN206391884U (en) | Efficient reverse osmosis membrane on-line cleaning system | |
| CN215996229U (en) | Membrane belt cleaning device | |
| CN106007040B (en) | Heavy metal wastewater treatment system and method | |
| CN216630355U (en) | Reverse osmosis membrane cleaning device | |
| CN109293099A (en) | A kind of Multifunctional pipeline adjustment structure of water purification machine | |
| CN202876665U (en) | Reverse osmosis membrane cleaning and sterilizing device | |
| CN215975251U (en) | Intelligent reverse osmosis multiple-effect protection device | |
| CN213357110U (en) | Ship waste gas washing wastewater quality monitoring system | |
| CN104707484A (en) | Reverse osmosis membrane assembly continuous cleaning device, and method utilizing device for reverse osmosis membrane assembly cleaning | |
| CN203803392U (en) | Integrated device for off-line cleaning and detecting of 8-inch reverse osmosis membrane elements | |
| CN210559756U (en) | Full-automatic water softener | |
| CN207845311U (en) | A kind of cutting wastewater processing system | |
| CN208104545U (en) | A kind of cleaning device of aluminium ring formula ion-exchanger | |
| CN204638013U (en) | A kind of reverse osmosis membrane assembly continuous cleaning device | |
| CN115475533A (en) | Membrane belt cleaning device | |
| CN220609837U (en) | Reverse osmosis device easy to clean | |
| CN221085231U (en) | Column type microfiltration membrane performance detection device | |
| CN213253863U (en) | High-efficient cleaning system who improves membrane flux | |
| CN213643751U (en) | Membrane element off-line cleaning equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |