Ultrapure water preparation system without secondary pollution

Abstract

The utility model discloses an ultrapure water preparation system without secondary pollution, which comprises a raw water tank, the raw water tank is connected with a bag filter through a conduit, the bag filter is connected with a UF device through a conduit, and the UF device is connected with a UF water tank through a conduit. Water is subjected to primary treatment through scale inhibitor treatment equipment, reducing agent treatment equipment, a security filter, primary reverse osmosis equipment, a primary RO water tank and secondary reverse osmosis equipment, and then is subjected to retreatment through a first TOC decomposer, a first membrane degassing device, a first water ring sealing vacuum pump and a packed bed electrodialysis module; then the wastewater is treated by a second TOC decomposer, a second membrane degassing device, a second water ring sealing vacuum pump, a first-stage polishing mixed bed, a second-stage polishing mixed bed, a first microfilter, an ultrapure water booster pump and a second microfilter, and finally is treated by an ion exchange mixed bed or a vacuum degassing machine, so that the treatment is more thorough.

Description

Technical Field

[0001] This utility model relates to the field of ultrapure water preparation technology, specifically to an ultrapure water preparation system without secondary pollution. Background Technology

[0002] Existing ultrapure water preparation systems first pass raw water through a quartz sand filter and an activated carbon filter, then add a scale inhibitor for further treatment, followed by reverse osmosis, and finally ion exchange to obtain ultrapure water. Therefore, current ultrapure water preparation systems are too simplistic in their water treatment and cannot achieve complete purification, leaving trace impurities such as carbon dioxide in the water. Utility Model Content

[0003] In view of the problems existing in the current ultrapure water preparation system without secondary pollution, this utility model is proposed.

[0004] Therefore, the purpose of this invention is to provide an ultrapure water preparation system without secondary pollution, solving the problem of existing ultrapure water preparation systems where raw water first passes through a quartz sand filter and an activated carbon filter, then a scale inhibitor is added for treatment, followed by a reverse osmosis device, and finally ion exchange technology to obtain ultrapure water. Therefore, current ultrapure water preparation systems treat water too simply and cannot achieve thorough treatment, leaving trace impurities such as carbon dioxide in the water.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0006] An ultrapure water preparation system without secondary pollution includes a raw water tank, a bag filter connected to the raw water tank via a conduit, an ultrafiltration (UF) device connected to the bag filter via a conduit, an UF tank connected to the UF device via a conduit, a treatment unit connected to the treatment unit via a conduit, a first filtration unit connected to the treatment unit via a conduit, a first TOC decomposer connected to the first TOC decomposer connected to the first membrane degassing device via a conduit, a packed bed electrodialysis module connected to the first membrane degassing device via a conduit, a pure water tank connected to the pure water tank via a conduit, a second TOC decomposer connected to the second TOC decomposer connected to the second membrane degassing device via a conduit, a first-stage polishing mixed bed connected to the second-stage polishing mixed bed via a conduit, a second filtration unit connected to the second filtration unit connected to the second degassing device via a conduit, and an ultrapure water tank connected to the second filtration unit via a conduit.

[0007] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, a UF feed pump is installed on the conduit connecting the raw water tank and the bag filter, and a UF backwash pump is installed on the conduit connecting the UF device and the UF water tank.

[0008] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, the first filtration unit includes a security filter, which is connected to a first-stage reverse osmosis device via a conduit. The first-stage reverse osmosis device is connected to a first-stage RO water tank via a conduit. The first-stage RO water tank is connected to a second-stage reverse osmosis device via a conduit. The second-stage reverse osmosis device is connected to a second-stage RO water tank via a conduit.

[0009] As a preferred embodiment of the ultrapure water preparation system without secondary pollution according to this utility model, the treatment unit includes a scale inhibitor treatment device and a reducing agent treatment device, the UF water tank is connected to the scale inhibitor treatment device through a conduit, and the scale inhibitor treatment device is connected to the reducing agent treatment device through a conduit.

[0010] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, a primary RO feed pump is installed on the conduit connecting the UF water tank and the scale inhibitor treatment equipment.

[0011] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, a first-stage RO high-pressure pump is installed on the conduit connecting the security filter and the first-stage reverse osmosis equipment.

[0012] The secondary reverse osmosis unit and the primary RO water tank are connected by two pipes. The two pipes connecting the secondary reverse osmosis unit and the primary RO water tank are respectively equipped with a cooling circulation water pump and a secondary RO high-pressure pump.

[0013] A CDI feed water booster pump is installed on the conduit connecting the first TOC decomposer and the secondary RO water tank, and a first water ring sealed vacuum pump is installed on the conduit connecting the packed bed electrodialysis module and the first membrane degassing device.

[0014] A pure water pump is installed on the conduit connecting the pure water tank and the second TOC decomposer. The second filtration unit includes a first microfilter connected to the second membrane degassing device via a conduit and a second microfilter connected to the secondary polishing mixed bed via a conduit. A second water ring sealed vacuum pump is installed on the conduit connecting the second membrane degassing device and the primary polishing mixed bed. An ultrapure water booster pump is installed on the conduit connecting the first microfilter and the second microfilter.

[0015] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, the degassing device is configured as an ion exchange mixed bed.

[0016] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, the degassing device is configured as a vacuum degassing machine.

[0017] As a preferred embodiment of the ultrapure water preparation system without secondary pollution described in this utility model, the degassing device includes an ion exchange mixed bed and a vacuum degasser. The ion exchange mixed bed is connected to a second microfilter via a conduit, the second microfilter is connected to the vacuum degasser via a conduit, and the vacuum degasser is connected to the ultrapure water tank 4 via a conduit.

[0018] Compared with existing technologies:

[0019] The water undergoes preliminary treatment via scale inhibitor treatment equipment, reducing agent treatment equipment, security filter, primary reverse osmosis equipment, primary RO water tank, and secondary reverse osmosis equipment. It then undergoes further treatment via a first TOC decomposer, a first membrane degassing device, a first water ring sealed vacuum pump, and a packed bed electrodialysis module. Following this, it is treated by a second TOC decomposer, a second membrane degassing device, a second water ring sealed vacuum pump, a primary polishing mixed bed, a secondary polishing mixed bed, a first microfilter, an ultrapure water booster pump, and a second microfilter. Finally, it is treated via an ion exchange mixed bed or a vacuum degasser, resulting in a more thorough treatment process. Attached Figure Description

[0020] Figure 1 The system flowchart provided for Embodiment 1 of this utility model;

[0021] Figure 2 The system flowchart provided for Embodiment 2 of this utility model;

[0022] Figure 3 The system flowchart provided for Embodiment 3 of this utility model.

[0023] In the diagram: 1. Raw water tank; 2. UF feed pump; 3. Bag filter; 4. UF device; 5. UF backwash pump; 6. UF water tank; 7. First-stage RO feed pump; 8. Scale inhibitor treatment equipment; 9. Reducing agent treatment equipment; 10. Security filter; 11. First-stage RO high-pressure pump; 12. First-stage reverse osmosis equipment; 13. First-stage RO water tank; 14. Cooling circulation makeup water pump; 15. Second-stage RO high-pressure pump; 16. Second-stage reverse osmosis equipment; 17. Second-stage RO water tank; 18. CDI feed booster pump; 19. ... 19. TOC decomposer; 20. First membrane degassing device; 21. First water ring sealed vacuum pump; 22. Packed bed electrodialysis module; 23. Pure water tank; 24. Pure water pump; 25. Second TOC decomposer; 26. Second membrane degassing device; 27. Second water ring sealed vacuum pump; 28. First-stage polishing mixed bed; 29. ​​Second-stage polishing mixed bed; 30. First microfilter; 31. Ultrapure water booster pump; 32. Second microfilter; 33. Ion exchange mixed bed; 34. Ultrapure water tank; 35. Vacuum degasser. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1:

[0026] This invention provides an ultrapure water preparation system without secondary pollution. Please refer to [link / reference]. Figure 1 The system includes a raw water tank 1, a bag filter 3 connected to the raw water tank 1 via a conduit, a UF device 4 connected to the bag filter 3 via a conduit, a UF tank 6 connected to the UF device 4 via a conduit, a treatment unit connected to the UF tank 6 via a conduit, a first filtration unit connected to the treatment unit via a conduit, a first TOC decomposer 19 connected to the first TOC decomposer 19 via a conduit, the first TOC decomposer 19 being used to remove total organic carbon from the water, and a first membrane degassing device 20 connected to the first membrane degassing device 20 via a conduit. The packed bed electrodialysis module 22 is connected to the pure water tank 23 via a conduit. The pure water tank 23 is connected to the second TOC decomposer 25 via a conduit. The second TOC decomposer 25 is connected to the second membrane degassing device 26 via a conduit. The second membrane degassing device 26 is connected to the first-stage polishing mixed bed 28 via a conduit. The first-stage polishing mixed bed 28 is connected to the second-stage polishing mixed bed 29 via a conduit. The second-stage polishing mixed bed 29 is connected to the second filtration unit via a conduit. The second filtration unit is connected to the degassing device via a conduit. The degassing device is connected to the ultrapure water tank 34 via a conduit.

[0027] A UF water supply pump 2 is installed on the conduit connecting the raw water tank 1 and the bag filter 3, and a UF backwash pump 5 is installed on the conduit connecting the UF device 4 and the UF water tank 6.

[0028] The first filtration unit includes a security filter 10, which is connected to a primary reverse osmosis device 12 via a conduit. The primary reverse osmosis device 12 is connected to a primary RO water tank 13 via a conduit. The primary RO water tank 13 is connected to a secondary reverse osmosis device 16 via a conduit. The secondary reverse osmosis device 16 is connected to a secondary RO water tank 17 via a conduit.

[0029] The treatment unit includes a scale inhibitor treatment device 8 and a reducing agent treatment device 9. The UF water tank 6 is connected to the scale inhibitor treatment device 8 through a conduit, and the scale inhibitor treatment device 8 is connected to the reducing agent treatment device 9 through a conduit.

[0030] A primary RO feed pump 7 is installed on the conduit connecting the UF water tank 6 and the scale inhibitor treatment equipment 8.

[0031] A first-stage RO high-pressure pump 11 is installed on the conduit connecting the security filter 10 and the first-stage reverse osmosis equipment 12;

[0032] The secondary reverse osmosis unit 16 and the primary RO water tank 13 are connected by two pipes. The two pipes connecting the secondary reverse osmosis unit 16 and the primary RO water tank 13 are respectively equipped with a cooling circulation water pump 14 and a secondary RO high-pressure pump 15.

[0033] A CDI feed water booster pump 18 is installed on the conduit connecting the first TOC decomposer 19 and the secondary RO water tank 17, and a first water ring sealed vacuum pump 21 is installed on the conduit connecting the packed bed electrodialysis module 22 and the first membrane degassing device 20.

[0034] A pure water pump 24 is installed on the conduit connecting the pure water tank 23 and the second TOC decomposer 25. The second TOC decomposer 25 is used to further remove total organic carbon from the water. The second filtration unit includes a first microfilter 30 connected to the second membrane degassing device 26 via a conduit and a second microfilter 32 connected to the secondary polishing mixed bed 29 via a conduit. A second water ring sealed vacuum pump 27 is installed on the conduit connecting the second membrane degassing device 26 and the primary polishing mixed bed 28. An ultrapure water booster pump 31 is installed on the conduit connecting the first microfilter 30 and the second microfilter 32. The degassing device is configured as an ion exchange mixed bed 33, which is used to remove carbon dioxide from the water.

[0035] Example 2:

[0036] See attached document Figure 2 Unlike Example 1, the degassing device is a vacuum degasser 35, which is used to remove carbon dioxide from the water again.

[0037] Example 3:

[0038] See attached document Figure 3Unlike Example 1, the degassing device includes an ion exchange mixed bed 33 and a vacuum degasser 35. The ion exchange mixed bed 33 is connected to a second microfilter 32 via a conduit. The second microfilter 32 is connected to the vacuum degasser 35 via a conduit. The vacuum degasser 35 is connected to an ultrapure water tank 34 via a conduit.

[0039] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A secondary contamination-free ultrapure water preparation system comprising a raw water tank (1), wherein a bag filter (3) is connected to the raw water tank (1) through a conduit, characterized in that: The bag filter (3) is connected to a UF device (4) via a conduit. The UF device (4) is connected to a UF water tank (6) via a conduit. The UF water tank (6) is connected to a treatment unit via a conduit. The treatment unit is connected to a first filtration unit via a conduit. The first filtration unit is connected to a first TOC decomposer (19) via a conduit. The first TOC decomposer (19) is connected to a first membrane degassing device (20) via a conduit. The first membrane degassing device (20) is connected to a packed bed electrodialysis module (22) via a conduit. The packed bed electrodialysis module (22) is connected to... A pure water tank (23) is connected via a conduit. The pure water tank (23) is connected via a conduit to a second TOC decomposer (25). The second TOC decomposer (25) is connected via a conduit to a second membrane degassing device (26). The second membrane degassing device (26) is connected via a conduit to a first-stage polishing mixed bed (28). The first-stage polishing mixed bed (28) is connected via a conduit to a second-stage polishing mixed bed (29). The second-stage polishing mixed bed (29) is connected via a conduit to a second filtration unit. The second filtration unit is connected via a conduit to a degassing device. The degassing device is connected via a conduit to an ultrapure water tank (34).

2. The system according to claim 1, wherein A UF water supply pump (2) is installed on the conduit connecting the raw water tank (1) and the bag filter (3), and a UF backwash pump (5) is installed on the conduit connecting the UF device (4) and the UF water tank (6).

3. The system according to claim 1, wherein The first filtration unit includes a security filter (10), which is connected to a first-stage reverse osmosis device (12) via a conduit. The first-stage reverse osmosis device (12) is connected to a first-stage RO water tank (13) via a conduit. The first-stage RO water tank (13) is connected to a second-stage reverse osmosis device (16) via a conduit. The second-stage reverse osmosis device (16) is connected to a second-stage RO water tank (17) via a conduit.

4. The system according to claim 2, wherein The processing unit includes a scale inhibitor treatment device (8) and a reducing agent treatment device (9). The UF water tank (6) is connected to the scale inhibitor treatment device (8) via a conduit, and the scale inhibitor treatment device (8) is connected to the reducing agent treatment device (9) via a conduit.

5. The system for producing ultra-pure water without secondary contamination according to claim 4, wherein A primary RO feed pump (7) is installed on the conduit connecting the UF water tank (6) and the scale inhibitor treatment equipment (8).

6. The system according to claim 3, wherein A first-stage RO high-pressure pump (11) is installed on the conduit connecting the security filter (10) and the first-stage reverse osmosis equipment (12); The secondary reverse osmosis unit (16) and the primary RO water tank (13) are connected by two pipes. The two pipes connecting the secondary reverse osmosis unit (16) and the primary RO water tank (13) are respectively equipped with a cooling circulation water pump (14) and a secondary RO high pressure pump (15). A CDI feed booster pump (18) is installed on the conduit connecting the first TOC decomposer (19) and the secondary RO water tank (17), and a first water ring sealed vacuum pump (21) is installed on the conduit connecting the packed bed electrodialysis module (22) and the first membrane degassing device (20). A pure water pump (24) is installed on the conduit connecting the pure water tank (23) and the second TOC decomposer (25). The second filtration unit includes a first microfilter (30) connected to the second membrane degassing device (26) via a conduit and a second microfilter (32) connected to the secondary polishing mixed bed (29) via a conduit. A second water ring sealed vacuum pump (27) is installed on the conduit connecting the second membrane degassing device (26) and the primary polishing mixed bed (28). An ultrapure water booster pump (31) is installed on the conduit connecting the first microfilter (30) and the second microfilter (32).

7. The system according to claim 1, wherein The degassing device is configured as an ion exchange mixed bed (33).

8. The system for producing ultra-pure water without secondary contamination according to claim 1, wherein The degassing device is configured as a vacuum degassing machine (35).

9. The system for producing ultra-pure water without secondary contamination according to claim 1, wherein The degassing device includes an ion exchange mixed bed (33) and a vacuum degasser (35). The ion exchange mixed bed (33) is connected to a second microfilter (32) through a conduit. The second microfilter (32) is connected to the vacuum degasser (35) through a conduit. The vacuum degasser (35) is connected to an ultrapure water tank (34) through a conduit.

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