CN211620129U

CN211620129U - Energy-saving water treatment equipment for filtering seawater into drinking water

Info

Publication number: CN211620129U
Application number: CN201922453290.6U
Authority: CN
Inventors: 解逵
Original assignee: Shandong Xinsheng Taishui Treatment Equipment Co ltd
Current assignee: Shandong Xinsheng Taishui Treatment Equipment Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-02
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to the technical field of marine operation ships and desert gobi drinking water preparation systems, in particular to an energy-saving water treatment device for filtering seawater into drinking water, which comprises a raw water tank, wherein the raw water tank is sequentially externally connected with a bag filter and a precision filter through pipelines, the outlet of the precision filter is connected with a nanofiltration device through a pipeline, and the outlet of the nanofiltration device is connected with a pure water tank; the pipeline and the pressure container of the utility model have higher requirements and lower requirements, the manufacturing cost and the operation cost are both reduced, the electric energy consumption is low, only a high-pressure pump is needed, the operation pressure is low, and the safety factor is high; the water utilization rate is high and can reach 15 to 20 percent, the produced water has stable quality, and the discharge of waste water is reduced; no medicament is added, so that secondary pollution is reduced.

Description

Energy-saving water treatment equipment for filtering seawater into drinking water

Technical Field

The utility model relates to a marine operation boats and ships and desert gobi drinking water preparation technical field, concretely relates to filter into energy-saving water treatment facilities of drinking water with sea water.

Background

Because the salt content of seawater is very high, the seawater cannot be directly used, and at present, two methods, namely a distillation method and a reverse osmosis membrane method, are mainly adopted for desalting the seawater. The distillation method is mainly used for ultra-large seawater desalination treatment and places with rich heat energy, and the energy consumption is very high by adopting the method. The reverse osmosis membrane method has wide application range, lower energy consumption than the distillation method and high desalination rate, so the reverse osmosis membrane method is widely applied to large-scale seawater desalination projects. However, for small-scale seawater desalination projects, the energy consumption of the reverse osmosis seawater desalination membrane is relatively high, a raw water pump and an ultrahigh pressure pump (with the pressure of more than 4 MPa) are needed for pressure permeation, and the reverse osmosis membrane which has higher requirements on pipelines and pressure vessels connected with equipment (needs to be made of duplex stainless steel or higher materials) needs a seawater desalination special membrane, so that the water utilization rate is about 10%. Both the manufacturing costs and the operating costs can be quite high.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the technical problem, the utility model aims to provide a: the energy-saving water treatment equipment for filtering seawater into drinking water is low in energy consumption and low in operating pressure, and drinking water meeting drinking water standards can be produced without ultrahigh pressure.

The utility model discloses a solve the technical scheme that its technical problem adopted and do:

the energy-saving water treatment equipment for filtering seawater into drinking water comprises a raw water tank, wherein the raw water tank is sequentially and externally connected with a bag filter and a precision filter through pipelines, the outlet of the precision filter is connected into a nanofiltration device through a pipeline, and the outlet of the nanofiltration device is connected into a pure water tank.

When the seawater desalination device is used, seawater or brackish water is arranged in the raw water tank, the seawater or brackish water enters the bag filter to remove particles larger than 10 microns in water after being pressurized by the raw water pump, then the particles larger than 5 microns in water are removed by the precision filter, then the water enters the high-pressure pump to be pressurized, the pressure is controlled to be about 1MPa, microorganisms, organic matters and most of salt in the water flowing out of the precision filter are removed by the nanofiltration device, and the water utilization rate can reach 15% -20%. Finally, the produced water enters a pure water tank and can be directly drunk or heated for drinking.

Preferably, the nanofiltration device comprises a shell, a water inlet and a concentrated water inlet are respectively arranged on the upper part of the shell, a water inlet and a drain opening are respectively arranged on the lower part of the shell, the nanofiltration membrane is arranged inside the shell, membrane shells are respectively arranged at the upper end and the lower end of the shell, membrane heads are arranged inside the membrane shells, sealing check rings are respectively arranged at the outer ends of the membrane heads, and sealing rings are arranged on the outer sides of the membrane heads.

Preferably, precision filter includes the shell, and the upper portion of shell sets up the upper cover, and the lower part of shell sets up the low head, and the top of shell sets up the gas vent, and shell side upper portion sets up the import, and shell side lower part sets up the export, and the lower part of shell sets up the drain, the inside of shell sets up card and card down respectively, is going up card and is fixing many filter cores down between the card, go up card, form the filter chamber between card and the shell down, the filter chamber is linked together with the import, and the lower part opening of filter core communicates with each other with the export.

Preferably, a first valve, a raw water pump and a second valve are sequentially arranged on a pipeline between the raw water tank and the bag filter, a third valve is arranged on a pipeline between the bag filter and the precision filter, a high-pressure pump is arranged between the precision filter and the nanofiltration device, and each valve mainly plays a role in controlling on-off.

Compared with the prior art, the utility model discloses following beneficial effect has:

the pipeline and the pressure container of the utility model have higher requirements and lower requirements, the manufacturing cost and the operation cost are both reduced, the electric energy consumption is low, only a high-pressure pump is needed, the operation pressure is low, and the safety factor is high; the water utilization rate is high and can reach 15 to 20 percent, the produced water has stable quality, and the discharge of waste water is reduced; no medicament is added, so that secondary pollution is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the nanofiltration device of the present invention;

3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3 in 3 accordance 3 with 3 the 3 present 3 invention 3; 3

FIG. 4 is a schematic view of the precision filter of the present invention;

fig. 5 is a schematic view of the structure of the bag filter of the present invention.

In the figure: 1. a raw water tank; 2. a first valve; 3. a raw water pump; 4. a second valve; 5. a bag filter; 6. a third valve; 7. a precision filter; 8. a high pressure pump; 9. a nanofiltration device; 10. a pure water tank; 11. a water producing port; 12. a dense water port; 13. a housing; 14. a water inlet; 15. emptying the air; 16. a sealing retainer ring; 17. a membrane head; 18. a nanofiltration membrane; 19. a seal ring; 20. a membrane shell; 21. an exhaust port; 22. an upper end enclosure; 23. mounting a pattern plate; 24. a filter element; 25. an inlet; 26. a lower pattern plate; 27. a lower end enclosure; 28. a sewage draining outlet; 29. an outlet; 30. a housing; 31. and (4) a flange.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings:

example 1

As shown in fig. 1-5, the energy-saving water treatment equipment for filtering seawater into drinking water comprises a raw water tank 1, wherein the raw water tank 1 is sequentially connected with an external bag filter 5 and a precision filter 7 through pipelines, an outlet 29 of the precision filter 7 is connected into a nano-filtration device 9 through a pipeline, and an outlet 29 of the nano-filtration device 9 is connected into a pure water tank 10.

The nanofiltration device 9 comprises a shell 13, wherein the upper part of the shell 13 is respectively provided with a water producing port 11 and a concentrated water port 12, the lower part of the shell 13 is respectively provided with a water inlet 14 and a drain port 15, a nanofiltration membrane 18 is arranged inside the shell 13, a flow channel is formed in the middle of the nanofiltration membrane 18, the upper end and the lower end of the shell 13 are respectively provided with a membrane shell 20, a membrane head 17 is arranged inside the membrane shell 20, the outer end of the membrane head 17 is respectively provided with a sealing check ring 16, and the outer side of the membrane head 17 is provided with a sealing ring 19; the nanofiltration device 9 has the working process that water flows in from a water inlet 14 and is filtered by a nanofiltration membrane 18, the filtered produced water flows into a flow channel at the middle part and is discharged through a water producing port 11, concentrated water is discharged through a concentrated water port 12, the precision filter 7 comprises a shell 30, an upper end enclosure 22 is arranged at the upper part of the shell 30, the upper end enclosure 22 is connected with the shell 30 through a flange 31, a lower end enclosure 27 is arranged at the lower part of the shell 30, an exhaust port 21 is arranged at the top part of the shell 30, an inlet 25 is arranged at the upper part of the shell 30, an outlet 29 is arranged at the lower part of the shell 30, a drain outlet 28 is arranged at the lower part of the shell 30, an upper flower plate 23 and a lower flower plate 26 are respectively arranged inside the shell 30, a plurality of filter elements 24 are fixed between the upper flower plate 23 and the lower flower plate 26, a flow channel is arranged at the middle part of the filter elements 24, a filter, the lower part of the filter element 24 is open and communicated with the outlet 29, and when the filter element is in operation, raw water enters from the inlet 25, is filtered by the filter element 24, flows into the outer chamber from the lower part of the filter element 24 through the flow passage, and is finally discharged from the outlet 29; a first valve 2, a raw water pump 3 and a second valve 4 are sequentially arranged on a pipeline between a raw water tank 1 and a bag filter 5, a third valve 6 is arranged on a pipeline between the bag filter 5 and a precision filter 7, a high-pressure pump 8 is arranged between the precision filter 7 and a nanofiltration device 9, and each valve mainly plays a role in controlling on-off.

The utility model discloses a concrete use:

when the seawater desalination device is used, seawater or brackish water is filled in the raw water tank 1, the seawater or brackish water enters the bag filter 5 to remove particles larger than 10 micrometers in water after being pressurized by the raw water pump 3, then the particles larger than 5 micrometers in water are removed by the precision filter 7, then the water enters the high-pressure pump 8 to be pressurized, the pressure is controlled to be about 1MPa, the water flowing out of the precision filter 7 is subjected to nanofiltration device 9 to remove microorganisms, organic matters and most of salt, and the water utilization rate can reach 15% -20%. Finally, the produced water enters the pure water tank 10 and can be directly drunk or heated for drinking.

Claims

1. An energy-saving water treatment device for filtering seawater into drinking water comprises a raw water tank (1) and is characterized in that the raw water tank (1) is sequentially externally connected with a bag filter (5) and a precision filter (7) through pipelines, an outlet (29) of the precision filter (7) is connected into a nanofiltration device (9) through a pipeline, and an outlet (29) of the nanofiltration device (9) is connected into a pure water tank (10).

2. The energy-saving water treatment equipment for filtering seawater into drinking water according to claim 1, wherein the nanofiltration device (9) comprises a shell (13), the upper part of the shell (13) is respectively provided with a water production port (11) and a concentrated water port (12), the lower part of the shell (13) is respectively provided with a water inlet (14) and a drain port (15), the inside of the shell (13) is provided with a nanofiltration membrane (18), the middle part of the nanofiltration membrane (18) forms a flow passage, the upper end and the lower end of the shell (13) are respectively provided with a membrane shell (20), the inside of the membrane shell (20) is provided with a membrane head (17), the outer end of the membrane head (17) is respectively provided with a sealing check ring (16), and the outer side of the membrane head (17) is provided with a sealing ring (.

3. The energy-saving water treatment equipment for filtering seawater into drinking water according to claim 1, wherein the precision filter (7) comprises a shell (30), an upper sealing head (22) is arranged at the upper part of the shell (30), a lower sealing head (27) is arranged at the lower part of the shell (30), an exhaust port (21) is arranged at the top of the shell (30), an inlet (25) is arranged at the upper part of the shell (30), an outlet (29) is arranged at the lower part of the shell (30), a drain outlet (28) is arranged at the lower part of the shell (30), an upper flower plate (23) and a lower flower plate (26) are respectively arranged in the shell (30), a plurality of filter elements (24) are fixed between the upper flower plate (23) and the lower flower plate (26), a filter cavity is formed among the upper flower plate (23), the lower flower plate (26) and the shell (30), the filter cavity is communicated with the inlet (25), and the lower part of the filter elements (24) is, is communicated with the outlet (29).

4. The energy-saving water treatment equipment for filtering seawater into drinking water according to claim 1, wherein a first valve (2), a raw water pump (3) and a second valve (4) are sequentially arranged on a pipeline between the raw water tank (1) and the bag filter (5), a third valve (6) is arranged on a pipeline between the bag filter (5) and the precision filter (7), and a high-pressure pump (8) is arranged between the precision filter (7) and the nano-filtration device (9).