Automatically-controlled reverse osmosis treatment device

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to an automatic control reverse osmosis treatment device, which comprises first reverse osmosis equipment and second reverse osmosis equipment, the first reverse osmosis equipment comprises an osmosis bin, an osmosis membrane body arranged in the osmosis bin and a central pipe arranged in the osmosis membrane body, a water purification hole is formed in the central pipe, the central pipe is communicated with the permeable membrane body, the permeable membrane body divides the permeable bin into a fresh water area and a concentrated water area, the permeable bin is provided with a water inlet communicated with the fresh water area, the permeable bin is provided with a water outlet communicated with the concentrated water area, and the water outlet is in pipeline connection with a conductivity sensor. The water inlet is connected with a high-pressure pump through a pipeline, and the high-pressure pump is electrically connected with the conductivity sensor; the reverse osmosis membrane accurately controls the flow of a concentrated water area, effectively prevents impurities from forming a concentration polarization layer on the surface of the reverse osmosis membrane body, prevents the impurities from depositing into an irreversible pollution layer, and prolongs the service life of the reverse osmosis membrane body.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to an automatically controlled reverse osmosis treatment device. Background Technology

[0002] In wastewater treatment, reverse osmosis membranes can remove heavy metals (lead, arsenic, etc.), dissolved salts (such as sodium and calcium), bacteria, viruses, pesticide residues, and organic matter, with a desalination rate as high as 90%-99%. In dealing with micro-pollution, they can effectively intercept emerging pollutants such as microplastics and some drug residues, ensuring water quality safety. Through a physical interception mechanism, reverse osmosis membranes can avoid the risk of chemical residues, making them suitable for scenarios with strict water quality requirements.

[0003] During operation, existing reverse osmosis systems do not monitor concentrate flow rate or boundary layer concentration in real time and use a fixed recovery rate, which results in the inability to dynamically adjust the ratio of concentrate flow rate (Qc) to feed flow rate (Qf) (Qc / Qf = 1 - recovery rate).

[0004] Therefore, when the feed water quality fluctuates (such as a sudden increase in TDS), the concentrate flow rate is insufficient (Qc < critical flushing flow rate), which cannot effectively flush the membrane surface. This causes the trapped impurities to form a concentration polarization layer on the membrane surface, resulting in a local increase in osmotic pressure. Consequently, the impurities are deposited as an irreversible fouling layer, affecting the service life of the reverse osmosis membrane. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing an automatically controlled reverse osmosis treatment device. It precisely controls the flow rate in the concentrate zone, facilitating the smooth discharge of impurities from the concentrate zone, effectively preventing impurities from forming a concentration polarization layer on the surface of the reverse osmosis membrane, avoiding the deposition of impurities into an irreversible fouling layer, and extending the service life of the reverse osmosis membrane.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model provides an automatically controlled reverse osmosis treatment device, including a first reverse osmosis device and a second reverse osmosis device for permeating water to be treated. Both the first and second reverse osmosis devices produce permeate and concentrate. The permeate produced by the first reverse osmosis device is used as water to be treated by the second reverse osmosis device.

[0008] The first reverse osmosis device includes a permeation chamber, a permeation membrane body installed in the permeation chamber, and a central tube disposed in the permeation membrane body. The central tube is provided with a clean water hole and is connected to the permeation membrane body. The permeation membrane body divides the permeation chamber into a fresh water zone and a concentrated water zone. The permeation chamber is provided with an inlet connected to the fresh water zone and an outlet connected to the concentrated water zone. The outlet pipe is connected to a conductivity sensor, and the inlet pipe is connected to a high-pressure pump. The high-pressure pump is electrically connected to the conductivity sensor.

[0009] The inlet pipe is connected to a first cleaning inlet pipe, the outlet pipe is connected to a first cleaning return pipe, the first cleaning inlet pipe is equipped with a first valve, and the first cleaning return pipe is equipped with a second valve.

[0010] The inlet pipe is connected to a second cleaning inlet pipe, the outlet pipe is connected to a second cleaning return pipe, the second cleaning inlet pipe is equipped with a third valve, and the second cleaning return pipe is equipped with a fourth valve.

[0011] The drain outlet pipe is connected to an auxiliary cleaning return pipe, and the auxiliary cleaning return pipe is equipped with a fifth valve.

[0012] The drainage outlet pipe is connected to a substandard discharge pipe, and the substandard discharge pipe is equipped with a sixth valve.

[0013] The drain outlet pipe is connected to a water supply pipe assembly, which is connected to the inlet end of the water to be treated in the second reverse osmosis equipment. An on / off valve is installed at the connection between the water supply pipe assembly and the drain outlet.

[0014] The inlet pipe is connected to a flushing inlet pipe, which is equipped with a flushing pump and a flushing valve. The water supply pipe group is equipped with a water supply pump. The outlet pipe is connected to a flushing outlet pipe, which is equipped with a first flushing valve. The outlet pipe of the second reverse osmosis equipment is connected to a flushing discharge pipe, which is equipped with a second flushing valve.

[0015] The water purification hole is connected to a freshwater pipeline, and the other end of the freshwater pipeline is connected to a freshwater tank. The outlet of the freshwater tank is connected to the inlet of the first reverse osmosis device.

[0016] The inlet pipe is connected to a first pressure indicator and a first pressure transmitter, which are located between the high-pressure pump and the permeation chamber. The outlet pipe is connected to a second pressure indicator and a second pressure transmitter. The freshwater pipe is connected to a third pressure indicator and a flow transmitter.

[0017] The inlet pipe is connected to a filter, and the high-pressure pump is located between the filter and the permeation chamber.

[0018] It also includes a cleaning tank, with the first and second cleaning return pipes connected to the water inlet of the cleaning tank, and the first and second cleaning inlet pipes connected to the water outlet of the cleaning tank.

[0019] The beneficial effects of this utility model are:

[0020] Precise control of the concentrate flow rate allows water molecules and a small amount of minerals to flow smoothly through the membrane body into the central tube and be discharged through the clean water holes. The vast majority of impurities, such as bacteria, viruses, heavy metal ions, organic matter, and dissolved solids, are effectively passed through the side of the membrane body closer to the concentrate zone, facilitating their smooth discharge from the concentrate zone. This effectively prevents impurities from forming a concentration polarization layer on the surface of the membrane body, avoiding the deposition of impurities into an irreversible fouling layer and extending the service life of the reverse osmosis membrane body. Attached Figure Description

[0021] Figure 1 This is a front view of the structure of the automatically controlled reverse osmosis treatment unit.

[0022] Figure 2 This is a system diagram of the first reverse osmosis unit.

[0023] Figure 3 This is a cross-sectional view of the permeation chamber.

[0024] Figure 4 This is a cross-sectional view of the central tube.

[0025] Figure 5 This is a left view of the automatically controlled reverse osmosis treatment unit.

[0026] Figure 6 This is a right view of the automatically controlled reverse osmosis treatment unit.

[0027] Figure 7 This is a top view of the automatically controlled reverse osmosis treatment unit.

[0028] Figure 8 This is a system diagram of the automatically controlled reverse osmosis treatment unit.

[0029] 1. Infiltration chamber; 101. Freshwater zone; 102. Concentrate zone;

[0030] 11. Water inlet; 12. Water outlet; 13. Conductivity sensor; 14. High-pressure pump;

[0031] 2. Membrane body; 3. Central tube; 301. Purified water port;

[0032] 41. First cleaning inlet pipe; 411. First valve; 42. First cleaning return pipe; 421. Second valve;

[0033] 43. Second cleaning inlet pipe; 431. Third valve; 44. Second cleaning return pipe; 441. Fourth valve; 45. Auxiliary cleaning return pipe; 451. Fifth valve;

[0034] 51. Substandard discharge pipe; 511. Sixth valve;

[0035] 6. Water supply pipe assembly;

[0036] 61. Flushing inlet pipe; 611. Flushing pump; 612. Flushing valve; 613. Water supply pump;

[0037] 62. Flushing outlet pipe; 621. First flushing valve;

[0038] 63. Flushing drain pipe; 631. Second flushing valve;

[0039] 71. Freshwater pipeline; 72. Freshwater tank;

[0040] 81. First pressure gauge; 82. First pressure transmitter; 83. Second pressure gauge; 84. Second pressure transmitter; 85. Third pressure gauge; 86. Flow transmitter;

[0041] 91. Filter; 92. Cleaning tank. Detailed Implementation

[0042] To facilitate understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and accompanying drawings. Specific embodiments of the present invention will be described below. It should be noted that, in order to provide a concise description of these embodiments, this specification cannot provide a detailed description of all features of the actual embodiments.

[0043] refer to Figures 1 to 8 As shown, this utility model provides an automatically controlled reverse osmosis treatment device, including a first reverse osmosis device and a second reverse osmosis device for permeating water to be treated. Both the first and second reverse osmosis devices produce permeate and concentrate. The permeate produced by the first reverse osmosis device is treated by the second reverse osmosis device as the water to be treated. The first reverse osmosis device includes a permeation chamber 1, a permeate membrane body 2 installed in the permeation chamber 1, and a central tube 3 disposed in the permeate membrane body 2. The central tube 3 is provided with a water purification hole 301 and is connected to the permeate membrane body 2. The permeate membrane body 2 divides the permeation chamber 1 into a freshwater zone 101 and a concentrate zone 102. The permeation chamber 1 is provided with an inlet 11 connected to the freshwater zone 101 and an outlet 12 connected to the concentrate zone 102. The outlet 12 is connected to a conductivity sensor 13, and the inlet 11 is connected to a high-pressure pump 14. The high-pressure pump 14 is electrically connected to the conductivity sensor 13.

[0044] refer to Figures 1 to 4 As shown, in practical applications, there are several permeation chambers 1 to facilitate batch treatment of the water to be treated. The water to be treated flows sequentially from the inlet 11 into the freshwater zone 101, the permeate membrane body 2, the concentrate zone 102, and the outlet 12. The conductivity sensor 13 detects the concentrate flow rate in the concentrate zone 102 in real time and dynamically adjusts the pressure of the high-pressure pump 14 in real time to precisely control the flow rate in the concentrate zone 102. This allows water molecules and a small amount of minerals to pass smoothly through the permeate membrane body 2 into the central pipe 3 and be discharged through the clean water hole 301. Most impurities, such as bacteria, viruses, heavy metal ions, organic matter, and dissolved solids, are effectively passed through the side of the permeate membrane body 2 closest to the concentrate zone 102, facilitating the smooth discharge of impurities from the concentrate zone 102. This effectively prevents impurities from forming a concentration polarization layer on the surface of the reverse osmosis membrane body 2, avoiding the deposition of impurities into an irreversible fouling layer and extending the service life of the reverse osmosis membrane body 2. Furthermore, the concentrate discharged from the first reverse osmosis device is connected to the corresponding concentrate discharge pipe, facilitating the flow of the concentrate to the corresponding concentrate collection tank. The water molecules and a small amount of minerals discharged from the first reverse osmosis device flow as permeate to the second reverse osmosis device. The second reverse osmosis device has the same structure, function, and working principle as the first reverse osmosis device, thereby performing secondary treatment on the permeate through the second reverse osmosis device. The permeate recovery rate of the first reverse osmosis device reaches 75%, and the permeate recovery rate of the second reverse osmosis device reaches 90%, significantly improving the permeate recovery rate.

[0045] refer to Figure 1 , 2 As shown in Figure 7, in this embodiment, the inlet 11 is connected to a first cleaning inlet pipe 41, and the outlet 12 is connected to a first cleaning return pipe 42. The first cleaning inlet pipe 41 is equipped with a first valve 411, and the first cleaning return pipe 42 is equipped with a second valve 421. In actual application, the first valve 411 and the second valve 421 are manual butterfly valves. When it is necessary to clean the permeation chamber 1, the first valve 411 and the second valve 421 are opened. The first cleaning return pipe 42 and the first cleaning inlet pipe 41 are connected to the cleaning tank 92. The cleaning tank 92 is connected to a corresponding fluid delivery pump to introduce the cleaning liquid into the permeation chamber 1 along the first cleaning inlet pipe 41 and recover it along the first cleaning return pipe 42, thus successfully cleaning the permeation chamber 1. Specifically, the high-pressure pump 14 controls the applied pressure to prevent the cleaning liquid from flowing into the central pipe 3, ensuring the cleaning effect on the permeation chamber 1.

[0046] refer to Figure 1 , 2As shown in Figures 5 and 7, in this embodiment, the inlet 11 is connected to a second cleaning inlet pipe 43, and the outlet 12 is connected to a second cleaning return pipe 44. The second cleaning inlet pipe 43 is equipped with a third valve 431, and the second cleaning return pipe 44 is equipped with a fourth valve 441. In actual application, the third valve 431 and the fourth valve 441 are manual butterfly valves. When it is necessary to clean the permeation chamber 1, the third valve 431 and the fourth valve 441 are opened. The second cleaning return pipe 44 and the second cleaning inlet pipe 43 are connected to the cleaning tank 92. The cleaning tank 92 is connected to a corresponding fluid delivery pump to introduce the cleaning liquid into the permeation chamber 1 along the second cleaning inlet pipe 43 and recover it along the second cleaning return pipe 44, thus successfully cleaning the permeation chamber 1. Specifically, the high-pressure pump 14 controls the applied pressure to prevent the cleaning liquid from flowing into the central pipe 3, ensuring the cleaning effect on the permeation chamber 1.

[0047] refer to Figure 1 , 2 As shown in Figure 7, in this embodiment, the drain outlet 12 is connected to an auxiliary cleaning return pipe 45. The auxiliary cleaning return pipe 45 is equipped with a fifth valve 451, which is a manual butterfly valve. When the cleaning fluid flows back to the cleaning tank 92, the fifth valve 451 can be opened, and the cleaning fluid flows back to the cleaning tank 92 along the first cleaning return pipe 42 and the auxiliary cleaning return pipe 45, or the cleaning fluid flows back to the cleaning tank 92 along the second cleaning return pipe 44 and the auxiliary cleaning return pipe 45, thereby increasing the cleaning fluid return speed. Alternatively, when the first cleaning return pipe 42 or the second cleaning return pipe 44 malfunctions, the fifth valve 451 can be opened, and the cleaning fluid flows smoothly back to the cleaning tank 92 along the auxiliary cleaning return pipe 45, ensuring smooth cleaning fluid return.

[0048] refer to Figure 2 , 7 As shown, in this embodiment, the drain outlet 12 is connected to a non-conforming discharge pipe 51, and the non-conforming discharge pipe 51 is equipped with a sixth valve 511. When it is necessary to discharge non-conforming substances in the product water, the sixth valve 511 is opened, and the non-conforming substances are discharged along the non-conforming discharge pipe 51. The discharge of non-conforming substances and concentrated water is carried out simultaneously, thereby improving the discharge efficiency of concentrated water and non-conforming substances.

[0049] refer to Figure 7 , 8As shown, in this embodiment, the drain outlet 12 is connected to a water supply pipe assembly 6, which is connected to the inlet of the water to be treated in the second reverse osmosis equipment. A shut-off valve is installed at the connection between the water supply pipe assembly 6 and the drain outlet 12 to facilitate the control of the disconnection and connection of the pipes. The inlet 11 is connected to a flushing inlet pipe 61, which is equipped with a flushing pump 611 and a flushing valve 612. The water supply pipe assembly 6 is equipped with a water supply pump 613. The drain outlet 12 is connected to a flushing outlet pipe 62, which is equipped with a first flushing valve 621. The outlet pipe of the second reverse osmosis equipment is connected to a flushing discharge pipe 63, which is equipped with a second flushing valve 631.

[0050] In practical applications, the flushing inlet pipe 61 is connected to the corresponding flushing water, and the first reverse osmosis equipment and the second reverse osmosis equipment are connected through the water supply pipe group 6. The flushing pump 611 and the flushing valve 612 are turned on, and the flushing water for flushing the first reverse osmosis equipment is discharged along the flushing outlet pipe 62. The first flushing valve 621 is closed to stop the discharge of flushing water. The flushing water for flushing the second reverse osmosis equipment is discharged along the flushing discharge pipe 63. The second flushing valve 631 is closed to stop the discharge of flushing water.

[0051] refer to Figure 1 , 2 As shown in Figures 3, 4, and 8, in this embodiment, the water purification hole 301 is connected to a freshwater pipe 71, and the other end of the freshwater pipe 71 is connected to a freshwater tank 72. The outlet of the freshwater tank 72 is connected to the inlet of the first reverse osmosis device, so that water and minerals passing through the central pipe 3 can flow smoothly into the freshwater tank 72. The freshwater tank 72 stores the water and minerals treated by the first reverse osmosis device, and can smoothly flow the water and minerals to the second reverse osmosis device as needed, which is beneficial for the second reverse osmosis treatment of water and minerals.

[0052] refer to Figure 2 As shown, in this embodiment, the inlet 11 pipeline is connected to a first pressure indicator 81 and a first pressure transmitter 82, which are located between the high-pressure pump 14 and the permeation chamber 1. The outlet 12 pipeline is connected to a second pressure indicator 83 and a second pressure transmitter 84. The freshwater pipeline 71 is connected to a third pressure indicator 85 and a flow transmitter 86, which facilitates the smooth control of the pressure at the inlet 11 and outlet 12, as well as the flow rate on the freshwater pipeline 71, ensuring the smooth and stable transport of the fluid.

[0053] refer to Figure 2 , 8As shown in this embodiment, the inlet 11 is connected to a filter 91, and the high-pressure pump 14 is located between the filter 91 and the permeation chamber 1. The water to be treated is filtered before entering the permeation chamber 1, which helps to improve the cleanliness of the water to be treated when it flows into the permeation chamber 1.

[0054] refer to Figure 2 , 8 As shown, this embodiment also includes a cleaning tank 92. The first cleaning return pipe 42 and the second cleaning return pipe 44 are connected to the water inlet of the cleaning tank 92, and the first cleaning inlet pipe 41 and the second cleaning inlet pipe 43 are connected to the water outlet of the cleaning tank 92. The cleaning liquid used for both cleaning processes is discharged from the same cleaning tank 92. By setting up a closed-loop connection between the dual-loop cleaning pipeline and the cleaning tank 92, the cleaning liquid can be fully recycled in the two cleaning processes, reducing the amount of waste liquid discharged and meeting the green production standards.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An automatically controlled reverse osmosis treatment device, characterized by, The application relates to a reverse osmosis device for treating water, comprising a first reverse osmosis device and a second reverse osmosis device for permeating the water to be treated, wherein the first reverse osmosis device and the second reverse osmosis device both produce product water and concentrated water, and the product water produced by the first reverse osmosis device is treated by the second reverse osmosis device. The first reverse osmosis device comprises a permeation tank (1), a permeation membrane body (2) installed in the permeation tank (1), and a central pipe (3) arranged in the permeation membrane body (2), the central pipe (3) is provided with a clean water hole (301), the central pipe (3) is communicated with the permeation membrane body (2), the permeation membrane body (2) divides the permeation tank (1) into a fresh water area (101) and a concentrated water area (102), the permeation tank (1) is provided with a water inlet (11) communicated with the fresh water area (101), the permeation tank (1) is provided with a water outlet (12) communicated with the concentrated water area (102), the water outlet (12) is connected with a conductivity sensor (13) through a pipeline, the water inlet (11) is connected with a high-pressure pump (14) through a pipeline, and the high-pressure pump (14) is electrically connected with the conductivity sensor (13).

2. The automatically controlled reverse osmosis treatment device according to claim 1, characterized in that The water inlet (11) is connected with a first cleaning inlet pipe (41) through a pipeline, the water outlet (12) is connected with a first cleaning return pipe (42) through a pipeline, the first cleaning inlet pipe (41) is installed with a first valve (411), and the first cleaning return pipe (42) is installed with a second valve (421).

3. The automatically controlled reverse osmosis treatment device according to claim 2, characterized in that The water inlet (11) is connected with a second cleaning inlet pipe (43) through a pipeline, the water outlet (12) is connected with a second cleaning return pipe (44) through a pipeline, the second cleaning inlet pipe (43) is installed with a third valve (431), and the second cleaning return pipe (44) is installed with a fourth valve (441).

4. The automatically controlled reverse osmosis treatment device according to claim 3, characterized in that The water outlet (12) is connected with an auxiliary cleaning return pipe (45) through a pipeline, and the auxiliary cleaning return pipe (45) is installed with a fifth valve (451).

5. The automatically controlled reverse osmosis treatment device according to claim 1, wherein The water outlet (12) is connected with an unqualified discharge pipe (51) through a pipeline, and the unqualified discharge pipe (51) is installed with a sixth valve (511).

6. The automatically controlled reverse osmosis treatment device according to claim 1, wherein The water outlet (12) is connected with a water supply pipe group (6) through a pipeline, the water supply pipe group (6) is communicated with an inlet end of water to be treated of the second reverse osmosis device, and a on-off valve is installed at the connection position of the water supply pipe group (6) and the water outlet (12). The water inlet (11) is connected with a flushing inlet pipe (61) through a pipeline, the flushing inlet pipe (61) is installed with a flushing pump (611) and a flushing valve (612), the water supply pipe group (6) is installed with a water supply pump (613), the water outlet (12) is connected with a flushing outlet pipe (62) through a pipeline, the flushing outlet pipe (62) is installed with a first flushing valve (621), an outlet end of the second reverse osmosis device is connected with a flushing discharge pipe (63) through a pipeline, and the flushing discharge pipe (63) is installed with a second flushing valve (631).

7. The automatically controlled reverse osmosis treatment device according to claim 1, wherein The clean water hole (301) is connected with a fresh water pipeline (71), and the other end of the fresh water pipeline (71) is connected with a fresh water tank (72), and the outlet end of the fresh water tank (72) is communicated with the water inlet end of the first reverse osmosis device.

8. The automatically controlled reverse osmosis treatment device according to claim 7, characterized in that The water inlet (11) is connected with a first pressure indicator (81) and a first pressure transmitter (82), the first pressure indicator (81) and the first pressure transmitter (82) are located between the high-pressure pump (14) and the permeation bin (1), the water outlet (12) is connected with a second pressure indicator (83) and a second pressure transmitter (84), and the fresh water pipeline (71) is connected with a third pressure indicator (85) and a flow transmitter (86).

9. The automatically controlled reverse osmosis treatment device according to claim 8, characterized in that The water inlet (11) is connected with a filter (91), and the high-pressure pump (14) is located between the filter (91) and the permeation bin (1).

10. The automatically controlled reverse osmosis treatment device according to claim 3, wherein Further comprising a cleaning tank (92), the first cleaning return pipe (42) and the second cleaning return pipe (44) are connected to the water inlet end of the cleaning tank (92), and the first cleaning inlet pipe (41) and the second cleaning inlet pipe (43) are connected to the water outlet end of the cleaning tank (92).

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