First-stage reverse osmosis concentrated water recovery system of desalted water station

Abstract

The utility model belongs to the technical field of desalted water station first-stage reverse osmosis concentrated water recovery, and particularly relates to a desalted water station first-stage reverse osmosis concentrated water recovery system which comprises a first-stage reverse osmosis concentrated water conveying pipeline which is sequentially connected with a booster pump assembly, a first liquid inlet valve and a first pressure gauge. The end part of the primary reverse osmosis concentrated water conveying pipeline is connected with a security filter, the security filter is connected with a concentrated water reverse osmosis device assembly through a concentrated water input pipeline, and the concentrated water input pipeline is sequentially connected with a second pressure gauge, a first liquid outlet valve, a high-pressure pump, a third pressure gauge and a flow regulating valve; a purified water outlet of the concentrated water reverse osmosis device assembly is connected with a concentrated water output pipeline, the concentrated water output pipeline is connected with a fourth pressure gauge, and a sewage outlet of the concentrated water reverse osmosis device assembly is connected with a main blow-off pipeline. According to the utility model, primary reverse osmosis concentrated water can be recycled, so that not only is the waste of water resources reduced, but also the pressure of a sewage treatment system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of desalted water station primary reverse osmosis concentrated water recovery systems, belong to desalted water station primary reverse osmosis concentrated water recovery technical field. BACKGROUND

[0002] Desalted water is the water that strong electrolyte contained therein is removed or reduced to a certain extent. Desalted water is widely used, mainly used in boiler water, industrial cooling, chemical production, electronic industry and laboratory research and other fields. In industrial production, desalted water is mainly produced by ultrafiltration+two-stage reverse osmosis+EDI process. In the actual production process of desalted water, a large amount of concentrated water drainage is generated at the primary reverse osmosis device. In the traditional technology, the primary reverse osmosis concentrated water is usually directly discharged into the sewage treatment system for treatment. Since the concentrated water generated at this point has poor water quality and large water volume, it not only causes a large amount of waste of water resources, but also increases the pressure of the sewage treatment system. SUMMARY

[0003] According to the deficiencies in the above prior art, the technical problem to be solved by the utility model is to provide a desalted water station primary reverse osmosis concentrated water recovery system capable of recovering primary reverse osmosis concentrated water.

[0004] The desalted water station primary reverse osmosis concentrated water recovery system, comprising a primary reverse osmosis concentrated water conveying pipeline, a booster pump assembly, a first liquid inlet valve and a first pressure gauge are connected in sequence on the primary reverse osmosis concentrated water conveying pipeline, a liquid inlet of a security filter is connected to the end of the primary reverse osmosis concentrated water conveying pipeline, a concentrated water reverse osmosis device assembly is connected to the liquid outlet of the security filter through a concentrated water input pipeline, a second pressure gauge, a first liquid outlet valve, a high-pressure pump, a third pressure gauge and a flow regulating valve are connected in sequence on the concentrated water input pipeline, a concentrated water output pipeline is connected to the clean water outlet of the concentrated water reverse osmosis device assembly, a fourth pressure gauge is connected to the concentrated water output pipeline, a main sewage pipeline is connected to the sewage outlet of the concentrated water reverse osmosis device assembly, a fifth pressure gauge and a main sewage valve are connected to the main sewage pipeline, a residual water discharge pipeline is connected to the front side of the main sewage valve on the main sewage pipeline, a residual water discharge valve is connected to the residual water discharge pipeline, and the residual water discharge pipeline is connected to a ditch.

[0005] Further, the concentrated water reverse osmosis device assembly comprises three branch concentrated water pipelines, one end of the branch concentrated water pipeline is connected to the concentrated water input pipeline, the other end is connected to the concentrated water output pipeline, a second liquid inlet valve, a concentrated water reverse osmosis device, a guide valve and a second liquid outlet valve are connected in sequence on the branch concentrated water pipeline, and the sewage outlet of the concentrated water reverse osmosis device is connected to the main sewage pipeline through a branch sewage pipeline.

[0006] Further, a flushing pipeline is connected to the concentrated water input pipeline, and a flushing valve is connected to the flushing pipeline.

[0007] Further, the main sewage pipeline is connected with a sewage flow meter on the rear side of the main sewage valve.

[0008] Further, the concentrated water output pipeline is connected with a sampling port.

[0009] Further, the concentrated water output pipeline is connected with a concentrated water output valve.

[0010] Further, the concentrated water output pipeline is connected with a first one-way valve.

[0011] Further, the concentrated water input pipeline is connected with a concentrated water input flow meter, and the concentrated water output pipeline is connected with a concentrated water output flow meter.

[0012] Further, the booster pump assembly comprises two branch booster pipelines, and the branch booster pipelines are sequentially connected with a third liquid inlet valve, a booster pump and a third liquid outlet valve.

[0013] Further, the branch booster pipeline is connected with a second one-way valve on the rear side of the booster pump.

[0014] Working principle and process:

[0015] When in use, the primary reverse osmosis concentrated water in the primary reverse osmosis concentrated water conveying pipeline is conveyed to the security filter for removing large-particle impurities under the action of the booster pump assembly, the first liquid inlet valve and the first liquid outlet valve are always open when working, and the first liquid inlet valve and the first liquid outlet valve are closed for cleaning and maintenance of the security filter, the first pressure gauge is used for detecting the water inlet pressure of the security filter, the second pressure gauge is used for detecting the water outlet pressure of the security filter, so that the working condition of the security filter is judged according to pressure reduction, the high-pressure pump is used for increasing the pressure of the raw water output by the security filter to the pressure required by the concentrated water reverse osmosis device assembly, the third pressure gauge is used for detecting the water inlet pressure of the concentrated water reverse osmosis device assembly, the flow regulating valve is used for adjusting the water inlet amount of the concentrated water reverse osmosis device assembly, the concentrated water reverse osmosis device assembly is used for fine filtering of the concentrated water, the clean concentrated water filtered is conveyed to a user end through the concentrated water output pipeline, the sewage generated by filtering is discharged into a sewage treatment system through the main sewage pipeline, the fourth pressure gauge is used for detecting the concentrated water output pressure, the fifth pressure gauge is used for detecting the sewage discharge pressure, and the main sewage valve is always open when working; when the system stops working, the main sewage valve is closed, and the residual water discharge valve is opened, so that the residual water of the system can be discharged into a ditch through the residual water discharge pipeline.

[0016] The desalinated water station primary reverse osmosis concentrated water recycling system has the beneficial effects that, compared with the prior art, the primary reverse osmosis concentrated water can be recycled, water resource waste is reduced, and the pressure of the sewage treatment system is reduced.

[0017] The desalinated water station primary reverse osmosis concentrated water recycling system can recycle the primary reverse osmosis concentrated water, reduce water resource waste, and reduce the pressure of the sewage treatment system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] In the diagram: 1. First-stage reverse osmosis concentrate delivery pipeline; 2. Third inlet valve; 3. Booster pump; 4. Branch booster pipeline; 5. Second check valve; 6. Third outlet valve; 7. First inlet valve; 8. First pressure gauge; 9. Security filter; 10. Second pressure gauge; 11. First outlet valve; 12. Concentrate input flow meter; 13. High-pressure pump; 14. Concentrate input pipeline; 15. Third pressure gauge; 16. Flow regulating valve; 17. Second inlet valve; 18. Flushing valve; 19. 20. Concentrate output valve; 21. Concentrate reverse osmosis unit; 22. Shower valve; 23. Second outlet valve; 24. Branch concentrate pipeline; 25. Fourth pressure gauge; 26. Sampling port; 27. Residual water discharge pipeline; 28. Concentrate output flow meter; 29. ​​Concentrate output pipeline; 30. First check valve; 31. Ditch; 32. Main sewage pipeline; 33. Branch sewage pipeline; 34. Main sewage valve; 35. Sewage flow meter; 36. Fifth pressure gauge; 37. Residual water discharge valve. Detailed Implementation

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0021] Example 1:

[0022] like Figure 1 As shown, the desalination station primary reverse osmosis concentrate recovery system of this utility model includes a primary reverse osmosis concentrate delivery pipeline 1. A booster pump assembly, a first inlet valve 7, and a first pressure gauge 8 are sequentially connected to the primary reverse osmosis concentrate delivery pipeline 1. The end of the primary reverse osmosis concentrate delivery pipeline 1 is connected to the inlet of a security filter 9. The outlet of the security filter 9 is connected to a concentrate reverse osmosis device assembly via a concentrate input pipeline 14. A second pressure gauge 10, a first outlet valve 11, and a high-pressure pump 13 are sequentially connected to the concentrate input pipeline 14. The third pressure gauge 15 and flow regulating valve 16 are connected to the purified water outlet of the concentrated water reverse osmosis unit. A concentrated water output pipe 29 is connected to the concentrated water output pipe 29. A fourth pressure gauge 25 is connected to the concentrated water output pipe 29. A main sewage pipe 32 is connected to the sewage outlet of the concentrated water reverse osmosis unit. A fifth pressure gauge 36 and a main sewage valve 34 are connected to the main sewage pipe 32. A residual water discharge pipe 27 located in front of the main sewage valve 34 is connected to the main sewage pipe 32. A residual water discharge valve 37 is connected to the residual water discharge pipe 27. The residual water discharge pipe 27 is connected to the trench 31.

[0023] When in use, the primary reverse osmosis concentrated water in the primary reverse osmosis concentrated water conveying pipeline 1 is conveyed to the security filter 9 under the action of the booster pump assembly for removal of large-particle impurities, the first liquid inlet valve 7 and the first liquid outlet valve 11 are normally open when in operation, the first liquid inlet valve 7 and the first liquid outlet valve 11 are closed for cleaning and maintenance of the security filter 9, the first pressure gauge 8 is used for detecting the water inlet pressure of the security filter 9, the second pressure gauge 10 is used for detecting the water outlet pressure of the security filter 9, so as to determine the working condition of the security filter 9 according to pressure reduction, the high-pressure pump 13 is used for increasing the pressure of the raw water output by the security filter 9 to the pressure required by the concentrated water reverse osmosis device assembly, the third pressure gauge 15 is used for detecting the water inlet pressure of the concentrated water reverse osmosis device assembly, the flow regulating valve 16 is used for regulating the water inlet flow of the concentrated water reverse osmosis device assembly, the concentrated water reverse osmosis device assembly is used for fine filtration of the concentrated water, the clean concentrated water after filtration is conveyed to the user end through the concentrated water output pipeline 29, the sewage generated by filtration is discharged into the sewage treatment system through the main sewage discharge pipeline 32, the fourth pressure gauge 25 is used for detecting the concentrated water output pressure, and the fifth pressure gauge 36 is used for detecting the sewage discharge pressure, the main sewage valve 34 is normally open when in operation, and when the system stops working, the main sewage valve 34 is closed and the residual water discharge valve 37 is opened, so that the residual water of the system can be discharged into the ditch 31 through the residual water discharge pipeline 27.

[0024] Embodiment 2

[0025] As shown in the embodiment 1, Figure 1

[0026] Further, the concentrated water reverse osmosis device assembly comprises three branch concentrated water pipelines 24, one end of the branch concentrated water pipeline 24 is connected to the concentrated water inlet pipeline 14, and the other end is connected to the concentrated water output pipeline 29, the branch concentrated water pipeline 24 is sequentially connected with the second liquid inlet valve 17, the concentrated water reverse osmosis device 21, the guide valve 22 and the second liquid outlet valve 23, the sewage discharge port of the concentrated water reverse osmosis device 21 is connected to the main sewage discharge pipeline 32 through the branch sewage discharge pipeline 33, the guide valve 22 is used to determine whether the concentrated water reverse osmosis device 21 is working normally, the three concentrated water reverse osmosis devices 21 can be one working, one flushing and one standby, the second liquid inlet valve 17 and the second liquid outlet valve 23 corresponding to the working concentrated water reverse osmosis device 21 are both in the open state, the second liquid inlet valve 17 corresponding to the flushing concentrated water reverse osmosis device 21 is open and the second liquid outlet valve 23 is closed, and the second liquid inlet valve 17 and the second liquid outlet valve 23 corresponding to the standby concentrated water reverse osmosis device 21 are both in the closed state;

[0027] ​Further, the concentrated water input pipeline 14 is connected with a flushing pipeline 19, and the flushing pipeline 19 is connected with a flushing valve 18. When the concentrated water reverse osmosis device 21 is flushed, the flushing valve 18 is opened, the flushing water is mixed with the concentrated water in the concentrated water input pipeline 14 through the flushing pipeline 19, part of the mixed water is filtered through the concentrated water reverse osmosis device 21 in the working state and then discharged through the concentrated water output pipeline 29, and the other part of the mixed water flushes the concentrated water reverse osmosis device 21 in the flushing state, and the waste water after flushing is discharged through the branch blowdown pipeline 33 and the main blowdown pipeline 32;

[0028] Further, the main blowdown pipeline 32 is connected with a sewage flow meter 35 at the rear side of the main blowdown valve 34, and the sewage flow meter 35 is used for detecting the sewage discharge amount, so as to calculate the sewage treatment cost.

[0029] Further, the concentrated water output pipeline 29 is connected with a sampling port 26, so as to facilitate sampling of the concentrated water output by the system and provide convenience for subsequent water sample detection.

[0030] Further, the concentrated water output pipeline 29 is connected with a concentrated water output valve 20, and the replacement of the end user can be performed by closing the concentrated water output valve 20.

[0031] Further, the concentrated water output pipeline 29 is connected with a first check valve 30, which can prevent the liquid from flowing back to the system and plays a protection role.

[0032] Further, the concentrated water input pipeline 14 is connected with a concentrated water input flow meter 12, and the concentrated water output pipeline 29 is connected with a concentrated water output flow meter 28. By detecting the input and output amounts of the concentrated water, the recovery rate of the concentrated water can be obtained.

[0033] Further, the booster pump assembly comprises two branch booster pipelines 4, and the branch booster pipelines 4 are sequentially connected with a third liquid inlet valve 2, a booster pump 3 and a third liquid outlet valve 6. Two booster pumps 3 are used for one working and one standby. The booster pump 3 is used for boosting the first-stage reverse osmosis concentrated water, so as to ensure that the first-stage reverse osmosis concentrated water passes through the security filter 9 smoothly. When the third liquid inlet valve 2 and the third liquid outlet valve 6 are closed, the branch booster pipeline 4 is used for maintenance and standby of the booster pump 3.

[0034] Further, the branch booster pipeline 4 is connected with a second check valve 5 at the rear side of the booster pump 3, which can prevent the concentrated water from flowing back and plays a protection role.

Claims

1. A desalination plant primary reverse osmosis concentrate recovery system, characterized by: The application relates to a concentrated water conveying pipeline (1) of a primary reverse osmosis device, wherein a booster pump assembly, a first liquid inlet valve (7) and a first pressure gauge (8) are sequentially connected to the concentrated water conveying pipeline (1); a liquid inlet of a security filter (9) is connected to the end of the concentrated water conveying pipeline (1); a concentrated water reverse osmosis device assembly is connected to a liquid outlet of the security filter (9) through a concentrated water input pipeline (14); a second pressure gauge (10), a first liquid outlet valve (11), a high-pressure pump (13), a third pressure gauge (15) and a flow regulating valve (16) are sequentially connected to the concentrated water input pipeline (14); a concentrated water output pipeline (29) is connected to a clean water outlet of the concentrated water reverse osmosis device assembly; a fourth pressure gauge (25) is connected to the concentrated water output pipeline (29); a main sewage pipeline (32) is connected to a sewage outlet of the concentrated water reverse osmosis device assembly; a fifth pressure gauge (36) and a main sewage valve (34) are connected to the main sewage pipeline (32); a residual water discharge pipeline (27) is connected to the front side of the main sewage valve (34) on the main sewage pipeline (32); a residual water discharge valve (37) is connected to the residual water discharge pipeline (27); and the residual water discharge pipeline (27) is connected to a ditch (31).

2. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: The concentrated water reverse osmosis device assembly comprises three branch concentrated water pipelines (24), one end of the branch concentrated water pipeline (24) is connected to the concentrated water input pipeline (14), the other end of the branch concentrated water pipeline (24) is connected to the concentrated water output pipeline (29), a second liquid inlet valve (17), a concentrated water reverse osmosis device (21), a guide valve (22) and a second liquid outlet valve (23) are sequentially connected to the branch concentrated water pipeline (24), and a sewage outlet of the concentrated water reverse osmosis device (21) is connected to the main sewage pipeline (32) through a branch sewage pipeline (33).

3. The desalination plant primary reverse osmosis concentrate recovery system of claim 2, wherein: A flushing pipeline (19) is connected to the concentrated water input pipeline (14), and a flushing valve (18) is connected to the flushing pipeline (19).

4. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: A sewage flowmeter (35) is connected to the rear side of the main sewage valve (34) on the main sewage pipeline (32).

5. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: A sampling port (26) is connected to the concentrated water output pipeline (29).

6. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: A concentrated water output valve (20) is connected to the concentrated water output pipeline (29).

7. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: A first one-way valve (30) is connected to the concentrated water output pipeline (29).

8. The desalination plant primary reverse osmosis concentrate recovery system of claim 1, wherein: A concentrated water input flowmeter (12) is connected to the concentrated water input pipeline (14), and a concentrated water output flowmeter (28) is connected to the concentrated water output pipeline (29).

9. The desalination plant primary reverse osmosis concentrate recovery system of any one of claims 1 to 8, characterized in that: The booster pump assembly comprises two branch booster pipelines (4), a third liquid inlet valve (2), a booster pump (3) and a third liquid outlet valve (6) are sequentially connected to the branch booster pipeline (4).

10. The desalination plant primary reverse osmosis concentrate recovery system of claim 9, wherein: A second one-way valve (5) is connected to the rear side of the booster pump (3) on the branch booster pipeline (4).

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