Reverse osmosis concentrated water recovery device for desalted water

Abstract

The utility model provides a desalted water reverse osmosis concentrated water recovery device which comprises a recovery cylinder (1), the recovery cylinder (1) comprises a hollow cylinder main body (11), one end of the hollow cylinder main body (11) is closed, the other end of the hollow cylinder main body (11) is open, a sealing cover (2) is installed at the opening, a fluid channel is arranged on the sealing cover (2), and the fluid channel is communicated with a cavity in the hollow cylinder main body (11); a partition plate (13) for placing a filter material is also arranged in the hollow cylinder main body (11); and the partition plate (13) is detachably connected with the inner side of the sealing cover (2).

Description

Technical Field

[0001] This utility model relates to a concentrate recovery device, and more particularly to a desalination reverse osmosis concentrate recovery device. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Desalinated water reverse osmosis concentrate recovery refers to the process of treating high-salinity wastewater (concentrate) generated by reverse osmosis (RO) systems through physical, chemical, or membrane separation technologies to achieve water resource recycling or pollutant reduction. Its core logic is to treat the concentrate (TDS concentration 3-5 times that of the influent) generated during raw water desalination as a "secondary resource," reducing wastewater discharge and lowering salt pollution load through concentration, purification, or reuse technologies.

[0004] Currently, most desalination reverse osmosis concentrate recovery units suffer from low treatment efficiency and insufficient operational stability due to the lack of staged filtration design. Traditional single-stage filtration structures (such as single-layer filter cartridges or single membrane modules) are insufficient for the synergistic removal of multi-scale pollutants in high-salinity wastewater: coarse particulate suspended solids can easily penetrate the filter layer and enter subsequent precision modules, causing membrane pore blockage or resin caking; while small molecular organic matter and high-valence salt ions, if directly contacting the high-precision membrane surface without pretreatment, will exacerbate concentration polarization and membrane fouling, indicating that there is still room for structural improvement.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] Purpose of the invention: The technical problem to be solved by this utility model is to provide a demineralized water reverse osmosis concentrate recovery device to address the shortcomings of the existing technology.

[0007] To solve the above-mentioned technical problems, this utility model discloses a demineralized water reverse osmosis concentrate recovery device, comprising:

[0008] The recycling cylinder includes a hollow cylindrical body, one end of which is closed and the other end is open. A sealing cap is installed at the opening, and the sealing cap has a fluid channel that communicates with the cavity inside the hollow cylindrical body. The hollow cylindrical body also has a partition plate for placing filter media inside. The partition plate is detachably connected to the inside of the sealing cap.

[0009] Furthermore, the fluid channel on the sealing cap includes:

[0010] The sealing cap is fixed with an inlet pipe and an outlet pipe at the end away from the hollow cylinder body, and the inlet pipe and outlet pipe are located outside the sealed space formed by the hollow cylinder body and the sealing cap.

[0011] Two connecting pipes are fixedly installed on one end of the sealing cap near the empty cylinder body. The connecting pipes are inserted into the sealed space formed by the empty cylinder body and the sealing cap. The two connecting pipes are fluidly connected to the water inlet pipe and the water outlet pipe, respectively, to form a fluid channel.

[0012] Furthermore, the partition plate includes:

[0013] Cylindrical partitions and transverse partitions; among which,

[0014] The cylindrical partition is installed on the side of the sealing cover near the hollow cylinder body;

[0015] The horizontal partition is fixed to the cylindrical partition on the side away from the sealing cover;

[0016] The cylindrical partition plate is fixed with a through hole for insertion into the connecting pipe.

[0017] Furthermore, a first water-permeable hole is provided on the horizontal partition.

[0018] Furthermore, a longitudinally placed partition is fixedly provided on the transverse partition.

[0019] Furthermore, the longitudinally placed partition is arranged perpendicularly to the transversely placed partition.

[0020] Furthermore, the number of the longitudinally placed partitions is multiple.

[0021] Furthermore, a second water-permeable hole is provided on the longitudinally placed partition plate.

[0022] Furthermore, there are multiple first and second water-permeable holes.

[0023] Furthermore, the inner wall of the opening of the recycling cylinder is provided with a threaded groove, and the outer wall of the sealing cover near one end of the recycling cylinder is provided with a threaded protrusion, and the threaded groove and the threaded protrusion engage.

[0024] Beneficial effects:

[0025] 1. The recycling cylinder 1 in this utility model adopts a modular and detachable design, which allows users to quickly disassemble the cylinder for filter media replacement or internal cleaning, greatly shortening downtime for maintenance. It is especially suitable for industrial scenarios where water quality fluctuates greatly and filter media is easily saturated.

[0026] 2. The recovery cylinder 1 of this utility model is equipped with a multi-segment filtration space. Each segment is filled with filter media with different functions (such as coarse filter layer, ion exchange resin layer, nanofiltration membrane layer, etc.) to form a gradient filtration system: the front end intercepts suspended solids and colloids, the middle end removes calcium and magnesium ions and heavy metals, and the end end intercepts residual salts through a precision membrane module. This segmented design not only extends the service life of the filter media, but also improves the filtration accuracy through physical-chemical synergy, ensuring that the effluent water quality is stable and meets the standards.

[0027] 3. The present invention adopts a unidirectional flow structure. The wastewater flows in one direction through pipeline layout and valve control, which avoids the backflow of high-salt wastewater to the upstream system due to pressure fluctuations or siphon effect, prevents cross-contamination and equipment corrosion, and ensures the reliability and safety of the system in long-term operation. Attached Figure Description

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 2 This is a schematic diagram of the recycling cylinder structure.

[0031] Figure 3 This is a schematic diagram of the sealing cap structure.

[0032] Figure 4 This is a schematic diagram of the inner structure of the sealing cap.

[0033] Figure 5 This is a schematic diagram of the partition structure.

[0034] In the diagram, 1 is the recycling cylinder, 2 is the sealing cap; 11 is the main body of the cylinder, 12 is the threaded groove, 13 is the partition plate; 21 is the main body of the cap, 22 is the inlet pipe, 23 is the outlet pipe, 24 is the threaded protrusion, 25 is the connecting pipe; 131 is the cylindrical partition plate, 132 is the horizontal partition plate, 133 is the first water permeable hole, 134 is the vertical partition plate, and 135 is the second water permeable hole. Detailed Implementation

[0035] The overall concept of this utility model is as follows: a demineralized water reverse osmosis concentrate recovery device is proposed. The recovery cylinder 1 adopts a modular and detachable design, allowing users to quickly disassemble the cylinder for filter media replacement or internal cleaning, significantly reducing downtime for maintenance. It is particularly suitable for industrial scenarios with large fluctuations in water quality and easy saturation of filter media. The recovery cylinder 1 is equipped with a multi-segment filtration space, with each segment specifically filled with filter media of different functions (such as coarse filter layer, ion exchange resin layer, nanofiltration membrane layer, etc.), forming a gradient filtration system: the front end intercepts suspended solids and colloids, the middle section removes calcium and magnesium ions and heavy metals, and the end section retains residual salts through a precision membrane module. This segmented design not only extends the service life of the filter media but also improves filtration accuracy through physical-chemical synergy, ensuring stable and compliant effluent quality. The device as a whole adopts a unidirectional flow structure, achieving unidirectional flow of wastewater through pipeline layout and valve control. This prevents high-salt wastewater from flowing back to the upstream system due to pressure fluctuations or siphon effect, preventing cross-contamination and equipment corrosion, and ensuring the long-term reliability and safety of the system.

[0036] like Figure 1 As shown, the overall technical solution of this utility model is as follows: a demineralized water reverse osmosis concentrate recovery device, comprising: a recovery cylinder 1, wherein a sealing cap 2 is threadedly connected to the front end of the recovery cylinder 1.

[0037] like Figure 2 As shown, the recycling cylinder 1 includes a cylinder body 11, which is hollow. A threaded groove 12 is provided on the inner wall of the front end of the cylinder body 11, and a partition plate 13 is placed inside the cylinder body 11.

[0038] like Figure 3 As shown, the sealing cover 2 includes a cover body 21, with an inlet pipe 22 fixedly connected to the bottom front end of the cover body 21, an outlet pipe 23 fixedly connected to the top front end of the cover body 21, and a connecting pipe 25 fixedly connected inside the cover body 21, with two sets of the connecting pipe 25.

[0039] The lower connecting pipe 25 is connected to the inlet pipe 22, and the upper connecting pipe 25 is connected to the outlet pipe 23.

[0040] like Figure 5 As shown, the partition plate 13 includes a cylindrical partition plate 131, a horizontal partition plate 132 is fixedly connected to the rear end of the cylindrical partition plate 131, a first through-hole 133 is opened on the rear side of the top end of the horizontal partition plate 132, and a vertical partition plate 134 is fixedly connected to the top end of the horizontal partition plate 132. The vertical partition plate 134 is provided in several groups and is evenly arranged at the top and bottom ends of the horizontal partition plate 132.

[0041] The longitudinally placed partitions 134, together with the transversely placed partitions 132, divide the interior of the cylindrical body 11 into multiple spaces. Each set of longitudinally placed partitions 134 has a through second water-permeable hole 135 on its surface.

[0042] The cylindrical partition 131 has through holes on its surface corresponding to the two sets of connecting pipes 25, and the two sets of connecting pipes 25 are inserted into the cylindrical partition 131.

[0043] like Figure 4 As shown, the outer wall of the cover body 21 is fixedly connected with a threaded protrusion 24, and the sealing cover 2 is threadedly connected to the recycling cylinder 1 by tightening the threaded protrusion 24 in the threaded groove 12.

[0044] In use, rotate and remove the sealing cap 2, pull the partition plate 13 outward from the connecting pipe 25, and place the corresponding filter media between several adjacent sets of longitudinal partitions 134. The two sets of longitudinal partitions 134 near the inlet pipe 22 can be used to place coarse filter media, such as quartz sand / anthracite filter media, which forms a filter layer through particle gradation to intercept suspended solids with a particle size >50μm (such as silt, rust, algae, etc.). The middle sets of longitudinal partitions 134 can be used to place ion exchange resin layer filter media, such as cation exchange resin with an exchange group of -SO3H, which can remove Ca. 2+ Mg 2+ Na + Metal cations, generate H + It can be used for water softening and hardness removal of high-hardness wastewater. Nanofiltration membrane filter media, such as sulfonated polyethersulfone membrane, can be placed between several sets of longitudinally placed baffles 134 at the tail end. The membrane has a negative charge on its surface, which repels anions such as SO42-, and is suitable for the treatment of high-sulfate wastewater.

[0045] Three different filter layers form a gradient filtration. During filtration, the inlet pipe 22 introduces wastewater into the corresponding connecting pipe 25. The connecting pipe 25 passes through the cylindrical partition 131 and enters the interior of the cylinder body 11. After filtration by the filter media, the wastewater passes through the second permeable hole 135 for the next layer of filtration, then through the first permeable hole 133, and then through the second permeable hole 135 for subsequent filtration, until it enters the outlet pipe 23 through the connecting pipe 25 connected to the outlet pipe 23 and is discharged outward, completing the entire filtration process.

[0046] When the filter media needs to be replaced, simply unscrew the sealing cap 2, remove the partition plate 13, and take out the corresponding filter media for replacement. It is simple and convenient to use.

[0047] This utility model provides a concept and method for a demineralized water reverse osmosis concentrate recovery device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A desalination reverse osmosis concentrate recovery device, characterized in that, include: The recycling cylinder (1) includes a hollow cylinder body (11), one end of which is closed and the other end is open. A sealing cover (2) is installed at the opening. A fluid channel is provided on the sealing cover (2), and the fluid channel communicates with the cavity inside the cylinder body (11). A partition plate (13) for placing filter media is also provided inside the cylinder body (11). The partition plate (13) is detachably connected to the inside of the sealing cover (2).

2. The demineralized water reverse osmosis concentrate recovery device according to claim 1, characterized in that, The fluid channel on the sealing cap (2) includes: The sealing cap (2) is fixed with an inlet pipe (22) and an outlet pipe (23) at the end away from the main body of the cylinder (11). The inlet pipe (22) and the outlet pipe (23) are located outside the sealed space formed by the main body of the cylinder (11) and the sealing cap (2). Two connecting pipes (25) are fixedly provided on one end of the sealing cap (2) near the main body of the cylinder (11). The connecting pipes (25) are inserted into the sealed space formed by the main body of the cylinder (11) and the sealing cap (2). The two connecting pipes (25) are fluidly connected to the inlet pipe (22) and the outlet pipe (23) respectively to form a fluid channel.

3. The desalination reverse osmosis concentrate recovery device according to claim 2, characterized in that, The partition plate (13) includes: Cylindrical partition (131) and transverse partition (132); wherein, The cylindrical partition (131) is installed on the side of the sealing cover (2) near the cylindrical body (11); The horizontal partition (132) is fixed on the side of the cylindrical partition (131) away from the sealing cover (2); The cylindrical partition (131) is fixed with a through hole, which is inserted into the connecting pipe (25).

4. The demineralized water reverse osmosis concentrate recovery device according to claim 3, characterized in that, The horizontal partition (132) has a first water-permeable hole (133).

5. A demineralized water reverse osmosis concentrate recovery device according to claim 4, characterized in that, A longitudinally placed partition (134) is fixed on the transverse partition (132).

6. The demineralized water reverse osmosis concentrate recovery device according to claim 5, characterized in that, The longitudinally placed partition (134) is arranged perpendicularly to the transversely placed partition (132).

7. A demineralized water reverse osmosis concentrate recovery device according to claim 6, characterized in that, The number of longitudinally placed partitions (134) is multiple.

8. A demineralized water reverse osmosis concentrate recovery device according to claim 7, characterized in that, The longitudinally placed partition (134) has a second water-permeable hole (135).

9. A demineralized water reverse osmosis concentrate recovery device according to claim 8, characterized in that, The number of the first water-permeable hole (133) and the second water-permeable hole (135) is multiple.

10. A demineralized water reverse osmosis concentrate recovery device according to claim 1, characterized in that, The inner wall of the opening of the recycling cylinder (1) is provided with a threaded groove (12), and the outer wall of the sealing cover (2) near the end of the recycling cylinder (1) is provided with a threaded protrusion (24). The threaded groove (12) and the threaded protrusion (24) engage.

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