CN218893544U - Novel sea water desalination device - Google Patents
Novel sea water desalination device Download PDFInfo
- Publication number
- CN218893544U CN218893544U CN202222643424.2U CN202222643424U CN218893544U CN 218893544 U CN218893544 U CN 218893544U CN 202222643424 U CN202222643424 U CN 202222643424U CN 218893544 U CN218893544 U CN 218893544U
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- China
- Prior art keywords
- filter
- water
- reverse osmosis
- membrane
- cartridge filter
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- 239000013535 sea water Substances 0.000 title claims abstract description 29
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000005374 membrane filtration Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims description 41
- 238000001223 reverse osmosis Methods 0.000 claims description 27
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000002455 scale inhibitor Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000011033 desalting Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012465 retentate Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a novel seawater desalination device, which comprises a multi-medium filter, wherein the water inlet end of the multi-medium filter is connected with a water inlet pump through a water inlet pipeline, the water outlet end of the multi-medium filter is connected with a membrane filtration system, and the membrane filtration system is connected with a water producing tank.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a novel sea water desalting device.
Background
Reverse osmosis sea water desalination technology is a technology for sea water desalination by using pressure difference as driving force. The reverse osmosis sea water desalination method has the advantages of simple operation, high automation degree, small specific investment, relatively low energy consumption and the like, is increasingly accepted by people, and is also increasingly applied to actual engineering projects. However, the membrane pollution phenomenon generated in the sea water desalination technology seriously affects the service life of the membrane and is applied to the actual reverse osmosis sea water desalination engineering, and the problem of reverse osmosis membrane pollution also has long plagued people. Thus, it is becoming particularly important to utilize pretreatment techniques to prevent membrane fouling to reduce operating maintenance costs.
In the technology of reverse osmosis sea water desalination, the traditional pretreatment methods include disinfection, coagulation, flocculation, multi-medium filtration, chlorination sterilization, security filtration and the like. However, the traditional pretreatment method has the defects of complex medicine adding, inconvenient connection mode with membrane treatment, required structure for adding and storing medicines and the like. The whole reverse osmosis sea water desalination process mainly comprises the steps of adding a medicament, coagulating, precipitating, ultrafiltering and reverse osmosis, the process steps are complex, the pretreatment is more in adding the medicament, the cost of flocculating agent, sterilizing agent and the like is higher, secondary pollution is easy to generate, the sea water desalination occupied area in the conventional structure form is large, the construction period is long, the investment cost is high, the process cannot be used rapidly in islands, mobile ships and emergency sea water purifying occasions, the water production efficiency of the whole process is reduced, and the competitiveness of the membrane technology in the sea water desalination field is further weakened.
Therefore, a novel sea water desalting device is provided.
Disclosure of Invention
The utility model aims to provide a novel sea water desalting device to solve the problems in the background technology.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a novel sea water desalination device, includes the multi-media filter, the inlet end of multi-media filter is connected with the pump that intakes through the inlet channel, the play water end of multi-media filter is connected with membrane filtration system, membrane filtration system is connected with the water tank that produces.
According to the technical scheme, the membrane filtration system comprises a security filter and a reverse osmosis membrane device, and a high-pressure pump is arranged between the security filter and the reverse osmosis membrane device.
According to the technical scheme, the cartridge filter comprises a 1 μm cartridge filter and a 5 μm cartridge filter which are connected.
According to the technical scheme, the outer part of the reverse osmosis membrane device is provided with the shells, and the number of the shells is three.
According to the technical scheme, a dosing tank is arranged between the multi-medium filter and the membrane filtration system.
According to the technical scheme, the dosing tank comprises a scale inhibitor dosing tank and a pH dosing tank.
According to the technical scheme, the water purifier further comprises a cleaning water tank, wherein the cleaning water tank forms a passage with the security filter and the reverse osmosis membrane device through connecting pipelines respectively.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the seawater is pretreated by the multi-medium filter, and the treated seawater is injected into the membrane filtration system through the water inlet pump for reverse osmosis treatment, so that the method has the advantages of simplicity in operation, reduction in medicine consumption and cost, reduction in secondary pollution, increase in service cycle and service life of the membrane for reverse osmosis, and improvement in seawater desalination efficiency.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the front view of the present utility model;
FIG. 3 is a right side view of the present utility model;
FIG. 4 is a schematic top view of the present utility model;
in the figure: 1-multi-medium filter, 2-1 μm cartridge filter, 3-5 μm cartridge filter, 4-shell, 5-scale inhibitor dosing tank, 6-pH dosing tank.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides the following technical solutions: a novel seawater desalination device is shown in fig. 1, and comprises a main body frame, wherein a multi-medium filter 1 is arranged in the main body frame, the multi-medium filter 1 is of a cylindrical tank structure, and suspended matters in raw water are removed by utilizing quartz sand and activated carbon filter materials, and the novel seawater desalination device belongs to common rapid filtration equipment.
When raw water flows through the filter material layer of the multi-medium filter 1, the filter material gaps play a role in screening suspended matters so that the suspended matters are easy to be trapped on the surface of the filter material. When a certain amount of dirt is trapped on the surface layer of the filter material to form a filter membrane, the pressure difference between the front and the rear of the filter can rise rapidly with the passage of time until the filter fails. At the moment, reverse water flow is required to backwash filter materials, so that quartz sand and an activated carbon layer in a filter are suspended and loosened, retentate adhered to the surfaces of the quartz sand and the activated carbon layer is stripped and taken away by water flow, the filtering function is recovered, the water inlet end of the multi-medium filter 1 is connected with a water inlet pump through a water inlet pipeline, the water outlet end of the multi-medium filter 1 is connected with a membrane filtering system, and the membrane filtering system is connected with a water producing tank;
specifically, the membrane filtration system comprises a cartridge filter and a reverse osmosis membrane device, and a high-pressure pump is arranged between the cartridge filter and the reverse osmosis membrane device;
specifically, the cartridge filter includes a 1 μm cartridge filter 2 and a 5 μm cartridge filter 3 connected; the function of the security filter is to prevent fine suspended matters from entering the reverse osmosis system, so that the reverse osmosis membrane is blocked and scratched.
The pressure gauge is installed before and after the cartridge filter to measure the pressure before and after the filter. The pressure differential across the filter may be indicative of the filter's operating condition. When the front-back pressure difference exceeds a certain range, the filter core needs to be replaced to restore the working performance of the cartridge filter.
The cartridge filter belongs to a precision filter, and the working principle is to mechanically filter by utilizing the pores of a filter element. Trace suspended particles, colloid, microorganisms and the like remained in the effluent of the multi-medium filter are trapped or adsorbed on the surface and pores of the filter element. With the increase of water production time, the running resistance of the filter element gradually rises due to the pollution of the trapped matters, and when the pressure rises, the filter element needs to be replaced. According to the conventional operation mode, the filter element is recommended to be replaced for 1-3 months, and when the water quality of the inflow water is good, the filter element can be adjusted to be replaced for 3-6 months according to the operation condition, so that the security filter can not fail.
Specifically, the outer part of the reverse osmosis membrane device is provided with three shells 4; 2 ultra-low pressure composite membranes of FilmTecTMSW30HRLE-400 of DuPont are arranged in each shell 4, 6 membranes are used in total, and the reverse osmosis membrane elements are used for removing various salts in water by utilizing the characteristic of permeable and impermeable salts of the semipermeable membranes. When a solvent and a solution (or two solutions with different concentrations) are respectively placed on both sides of the membrane, the solvent spontaneously passes through the membrane to flow to the solution (or a low concentration solution to a high concentration solution) side, a natural phenomenon is called osmosis, when a pressure higher than osmotic pressure is applied to the raw water side, a part of pure water in the raw water is made to permeate the membrane in a direction perpendicular to the membrane, salt and colloidal substances in the water are concentrated on the surface of the membrane, and the rest of the raw water takes away the concentrated substances in a direction parallel to the membrane, and the phenomenon is called reverse osmosis. Only a small amount of salt is remained in the water which passes through the membrane, and the purpose of desalination is achieved by collecting and utilizing the passing water.
The higher the water flux of the membrane element, the higher the recovery rate, the higher the concentration degree of the membrane surface, and the concentration of the substance on the membrane surface is different from that in the main water flow due to the concentration effect, so that the concentration polarization phenomenon is generated. Concentration polarization increases the concentration of salt on the surface of the membrane, the osmotic pressure of the membrane increases, and the salt permeability increases. More energy is consumed to raise the pressure of the feed water.
Specifically, a dosing tank is arranged between the multi-medium filter 1 and the membrane filtration system, and a metering pump is arranged on the tank. The dosing tank is used for dissolving and diluting medicines, and the metering pump is used for dosing liquid medicine into water. The metering boxes are all provided with low liquid level switches, and when the liquid medicine is not too much, the corresponding metering pumps are stopped and alarm is given, so that operators are reminded to prepare the liquid medicine in time. The preparation of the liquid medicine is carried out manually. The specific adding amount of the medicament is flexibly adjusted according to the water quality result of on-site debugging; the dilution multiple of the medicament is determined according to the concentration of the stock solution, the volume of the metering box and the measuring range of the metering pump;
specifically, the dosing tank comprises a scale inhibitor dosing tank 5 and a pH dosing tank 6, naOH is added before water inflow to adjust the pH so as to adjust the pH of the water producing side to meet the normal requirement of drinking water, and the NaOH is selected as food grade; the scale inhibitor is added to prevent the scale formation at the dense water end of the reverse osmosis membrane so as to ensure that the SWRO membrane is not blocked by pollution and ensure that SWRO equipment normally operates. In the project, the adding amount of the scale inhibitor is generally 3-5 ppm according to the instruction of scale inhibitor suppliers.
Specifically, the device also comprises a cleaning water tank, wherein the cleaning water tank forms a passage with the cartridge filter and the reverse osmosis membrane device through connecting pipelines, so that fresh water is injected into the cleaning water tank, and the cartridge filter and the reverse osmosis membrane device are respectively injected with the fresh water, so that the device is cleaned.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides a novel sea water desalination device, includes multi-media filter (1), its characterized in that: the water inlet end of the multi-medium filter (1) is connected with a water inlet pump through a water inlet pipeline, the water outlet end of the multi-medium filter (1) is connected with a membrane filtration system, and the membrane filtration system is connected with a water producing tank.
2. A novel seawater desalination plant as claimed in claim 1, wherein: the membrane filtration system comprises a cartridge filter and a reverse osmosis membrane device, and a high-pressure pump is arranged between the cartridge filter and the reverse osmosis membrane device.
3. A novel seawater desalination plant as claimed in claim 2, wherein: the cartridge filter comprises a 1 μm cartridge filter (2) and a 5 μm cartridge filter (3) which are connected.
4. A novel seawater desalination plant as claimed in claim 3, wherein: the outside of reverse osmosis membrane device is equipped with shell (4), the quantity of shell (4) is three.
5. A novel seawater desalination plant as claimed in claim 4, wherein: a dosing box is arranged between the multi-medium filter (1) and the membrane filtration system.
6. A novel seawater desalination plant as claimed in claim 5, wherein: the dosing box comprises a scale inhibitor dosing box (5) and a pH dosing box (6).
7. A novel seawater desalination plant as claimed in claim 5, wherein: the device also comprises a cleaning water tank, wherein the cleaning water tank forms a passage with the cartridge filter and the reverse osmosis membrane device through connecting pipelines respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643424.2U CN218893544U (en) | 2022-10-09 | 2022-10-09 | Novel sea water desalination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643424.2U CN218893544U (en) | 2022-10-09 | 2022-10-09 | Novel sea water desalination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218893544U true CN218893544U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222643424.2U Expired - Fee Related CN218893544U (en) | 2022-10-09 | 2022-10-09 | Novel sea water desalination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218893544U (en) |
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2022
- 2022-10-09 CN CN202222643424.2U patent/CN218893544U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230421 |