CN222821389U - High recovery rate pure water treatment device - Google Patents
High recovery rate pure water treatment device Download PDFInfo
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- CN222821389U CN222821389U CN202420589136.XU CN202420589136U CN222821389U CN 222821389 U CN222821389 U CN 222821389U CN 202420589136 U CN202420589136 U CN 202420589136U CN 222821389 U CN222821389 U CN 222821389U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model provides a high-recovery pure water treatment device, which belongs to the technical field of water treatment and comprises a raw water tank, a raw water pump, a filtering system, a clean water tank, a first-stage reverse osmosis device, a second-stage reverse osmosis device, an EDI device, a polishing mixed bed device and a concentrated water recovery system, wherein the raw water tank, the raw water pump, the filtering system, the clean water tank, the first-stage reverse osmosis device, the second-stage reverse osmosis device, the EDI device and the polishing mixed bed device are sequentially communicated along the discharge direction of the purified water, the concentrated water discharge end of the second-stage reverse osmosis device is communicated with the clean water tank, the water inlet end of the concentrated water recovery system is communicated with the concentrated water discharge end of the first-stage reverse osmosis device, and the water outlet end of the concentrated water recovery system is communicated with the clean water tank. The high recovery pure water treatment device further concentrates and recycles the purified water and the concentrated water discharged by the first-stage reverse osmosis device so as to improve the utilization rate of the input tap water.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a high-recovery pure water treatment device.
Background
The problem that the ultrapure water system for sampling the reverse osmosis membrane process is difficult to avoid is the comprehensive utilization rate of tap water, and the problems of filtration backwash water discharge, reverse osmosis concentrated water discharge, EDI concentrated water discharge and unqualified ultrapure water purity discharge are involved in the process, and the backwash water and the reverse osmosis concentrated water of conventional filtration treatment are discharged into a municipal sewage pipeline, so that the concentrated water discharged from a plurality of places is not effectively utilized, the total utilization rate of tap water is reduced, and the utilization rate of tap water in the existing pure water treatment is only about 70-75%. For the large-flow reverse osmosis device, a large amount of water resource waste is caused and the water production cost of ultrapure water is increased.
Therefore, there is a need to design a high recovery pure water treatment apparatus to solve the above-mentioned problems.
Disclosure of utility model
In view of the shortcomings of the prior art, the utility model provides a high-recovery pure water treatment device, which is used for solving the technical problems that an ultrapure water system of the existing sampling reverse osmosis membrane technology has low tap water utilization rate, is easy to cause water resource waste and increases water production cost.
In order to achieve the above and other related objects, the present utility model provides a high recovery pure water treatment apparatus, comprising a raw water tank, a raw water pump, a filtration system, a clean water tank, a primary reverse osmosis device, a secondary reverse osmosis device, an EDI device, a polishing mixed bed device and a concentrated water recovery system;
The device comprises a raw water tank, a raw water pump, a filtering system, a clean water tank, a first-stage reverse osmosis device, a second-stage reverse osmosis device, an EDI device and a polishing mixed bed device, wherein the raw water tank, the raw water pump, the filtering system, the clean water tank, the first-stage reverse osmosis device, the second-stage reverse osmosis device, the EDI device and the polishing mixed bed device are sequentially communicated along the discharge direction of purified water, the concentrated water discharge end of the second-stage reverse osmosis device is communicated with the clean water tank, the water inlet end of the concentrated water recovery system is communicated with the concentrated water discharge end of the first-stage reverse osmosis device, and the water outlet end of the concentrated water recovery system is communicated with the clean water tank.
In one example of the utility model, the concentrated water recovery system comprises a first concentrated water reverse osmosis recovery device and a second concentrated water reverse osmosis recovery device, wherein the water inlet end of the first concentrated water reverse osmosis recovery device is communicated with the concentrated water discharge end of the primary reverse osmosis device, the water outlet end of the first concentrated water reverse osmosis recovery device is communicated with the clean water tank, the water inlet end of the second concentrated water reverse osmosis recovery device is communicated with the concentrated water discharge end of the first concentrated water reverse osmosis recovery device, and the water outlet end of the second concentrated water reverse osmosis recovery device is communicated with the clean water tank.
In one example of the present utility model, the EDI device has a concentrate discharge end, and the concentrate discharge end of the EDI device communicates with the clean water tank.
In one example of the present utility model, a first shut-off valve is disposed between the clean water tank and the first stage reverse osmosis unit.
In one example of the utility model, the filtering system comprises a mechanical filter and an activated carbon filter, wherein the water inlet end of the mechanical filter is communicated with the water outlet end of the raw water pump, the water inlet end of the activated carbon filter is communicated with the water outlet end of the mechanical filter, the water outlet end of the activated carbon filter is communicated with the clean water tank, and the mechanical filter and the activated carbon filter are provided with concentrated water discharge ends.
In an example of the present utility model, the high recovery pure water treatment device further includes a concentrate tank, a water inlet end of the concentrate tank is communicated with a concentrate discharge end of the primary reverse osmosis device, a water outlet end of the concentrate tank is communicated with the raw water tank, and a first reflux pump is disposed at the water outlet end of the concentrate tank.
In an example of the present utility model, the high recovery pure water treatment device further includes a concentrate tank, a water inlet end of the concentrate tank is communicated with a concentrate discharge end of the primary reverse osmosis device, a water outlet end of the concentrate tank is respectively communicated with the mechanical filter and a water inlet end of the activated carbon filter through pipelines, and a first reflux pump is disposed at a water outlet end of the concentrate tank.
In an example of the utility model, the water outlet end of the concentrate tank is provided with a second stop valve.
In an example of the utility model, the high recovery pure water treatment device further comprises a backwash water recovery system, the backwash water recovery system comprises a backwash water recovery tank and a plate-and-frame filter press, the water inlet end of the backwash water recovery tank is communicated with the concentrated water discharge end of the mechanical filter and the active carbon filter, the top of the backwash water recovery tank is communicated with a first backflow pipe, a second backflow pump is arranged on the first backflow pipe, the first backflow pipe is communicated with the raw water tank, the bottom of the backwash water recovery tank is communicated with the plate-and-frame filter press through a pipeline, and the water outlet end of the plate-and-frame filter press is communicated with the raw water tank through a second backflow pipe.
In an example of the present utility model, the filtration system further includes a softening filter and a fine filter, the mechanical filter, the activated carbon filter, the softening filter and the fine filter are sequentially connected in a water outlet direction, and a water outlet end of the fine filter is connected with the clean water tank.
The utility model provides a high-recovery pure water treatment device, which is characterized in that a secondary reverse osmosis device is arranged at the water outlet end of pure water discharged by a primary reverse osmosis device, the pure water discharged by the secondary reverse osmosis device is further purified and recycled to a clean water tank by the secondary reverse osmosis device, meanwhile, a concentrated water recovery system is arranged at the concentrated water discharge end of the primary reverse osmosis device, the concentrated water discharged by the primary reverse osmosis device is subjected to secondary concentration by the concentrated water recovery system, and the filtered pure water is returned to the clean water tank for reuse. The high recovery pure water treatment device recycles the purified water and the concentrated water discharged by the primary reverse osmosis device so as to further improve the utilization rate of the input tap water.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing the construction of a high recovery pure water treatment apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic view showing the construction of a pure water treatment apparatus with high recovery rate according to another embodiment of the present utility model.
Description of element reference numerals
100. Raw water tank 110, raw water pump 200, filtration system 210, mechanical filter 220, active carbon filter 230, softening filter 240, precision filter 300, clean water tank 310, first stop valve 400, first reverse osmosis device 410, concentrated water tank 411, second stop valve 412, first reflux pump 500, second reverse osmosis device 600, EDI device 700, polishing mixed bed device 800, concentrated water recovery system 810, first concentrated water reverse osmosis recovery device 820, second concentrated water reverse osmosis recovery device 900, backwash water recovery system 910, backwash water recovery tank 911, first reflux pipe 912, second reflux pump 920, plate-and-frame filter press 921, second reflux pipe.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the utility model is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the utility model. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used in this specification for descriptive purposes only and not for purposes of limitation, and that the utility model may be practiced without materially departing from the novel teachings and without departing from the scope of the utility model.
The utility model provides a high-recovery pure water treatment device which further concentrates and recycles pure water and concentrated water discharged by a primary reverse osmosis device so as to improve the utilization rate of the high-recovery pure water treatment device on input tap water, thereby solving the technical problems that an ultrapure water system of the existing sampling reverse osmosis membrane technology has low tap water utilization rate, and water resource waste and water production cost increase are easy to cause.
Referring to fig. 1 and 2, the above-mentioned high recovery pure water treatment apparatus includes a raw water tank 100, a raw water pump 110, a filtration system 200, a clean water tank 300, a primary reverse osmosis apparatus 400, a secondary reverse osmosis apparatus 500, an EDI apparatus 600 (Electrodeionization, electrodeionization apparatus), a polishing mixed bed apparatus 700, and a concentrated water recovery system 800. The raw water tank 100, the raw water pump 110, the filtration system 200, the clean water tank 300, the primary reverse osmosis unit 400, the secondary reverse osmosis unit 500, the EDI unit 600, and the polishing mixed bed unit 700 are sequentially connected in the purified water discharge direction. Wherein, tap water enters the original water tank 100 and then is conveyed to the filtering system 200 through the original water pump 110, filtered water discharged from the filtering system 200 enters the clean water tank 300, filtered water accumulated in the clean water tank 300 is discharged to the first-stage reverse osmosis device 400 and the second-stage reverse osmosis device 500 for reverse osmosis treatment, and after the reverse osmosis treatment, the discharged water from the second-stage reverse osmosis device 500 is discharged to the EDI device 600 and the polishing mixed bed device 700 for further purification treatment, and finally the prepared ultrapure water is output from the water outlet end of the polishing mixed bed device 700.
Referring to fig. 1 and 2, the primary reverse osmosis unit 400, the secondary reverse osmosis unit 500, and the EDI unit 600 have a concentrate discharge end in addition to a water inlet end and a water outlet end. The concentrated water discharge end of the first-stage reverse osmosis device 400 is communicated with the water inlet end of the concentrated water recovery system 800, the water outlet end of the concentrated water recovery system 800 is communicated with the clean water tank 300, the concentrated water recovery system 800 carries out further concentration treatment on the concentrated water discharged by the first-stage reverse osmosis device 400, and the treated clean water is returned to the clean water tank 300 for reuse. The water inlet end of the second-stage reverse osmosis device 500 is communicated with the water outlet end of the first-stage reverse osmosis device 400, the concentrated water outlet end of the second-stage reverse osmosis device 500 is communicated with the clean water tank 300, the second-stage reverse osmosis device 500 returns the concentrated water filtered by reverse osmosis to the clean water tank 300 for recycling in addition to further reverse osmosis treatment of the purified water output by the first-stage reverse osmosis device 400, the water inlet end of the EDI device 600 is communicated with the water outlet end of the second-stage reverse osmosis device 500, the concentrated water outlet end of the EDI device 600 is communicated with the clean water tank 300, and the EDI device 600 is identical to the second-stage reverse osmosis device 500 in that the purified water output by the second-stage reverse osmosis device 500 is subjected to ion filtration and the concentrated water filtered by the ion is returned to the clean water tank 300 for recycling. Under the above-mentioned circulation structure, the high recovery pure water treatment device simultaneously carries out recycle again to the purified water and the dense water of one-level reverse osmosis unit 400 output to improve the utilization ratio to the purified tap water, reduce the waste to the water resource.
In addition, referring to FIGS. 1 and 2, in some embodiments, a first shut-off valve 310 is provided between the fresh water tank 300 and the first stage reverse osmosis unit 400. The first shut-off valve 310 is closed before the water level of the clean water tank 300 reaches the preset circulating water level and is opened after the water level of the clean water tank 300 reaches the preset circulating water level so that the clean water stored in the clean water tank 300 can be transferred to the primary reverse osmosis unit 400 for the subsequent purification process.
Referring to fig. 1 and 2, in some embodiments, the concentrated water recovery system 800 includes a first concentrated water reverse osmosis recovery device 810 and a second concentrated water reverse osmosis recovery device 820, the water inlet end of the first concentrated water reverse osmosis recovery device 810 is connected to the concentrated water outlet end of the first concentrated water reverse osmosis recovery device 400, the water outlet end of the first concentrated water reverse osmosis recovery device 810 is connected to the clean water tank 300, the first concentrated water reverse osmosis recovery device 810 further concentrate and filters the concentrated water discharged from the first concentrated water reverse osmosis device 400, and the filtered purified water is returned from the water outlet end to the clean water tank 300 for reuse, the water inlet end of the second concentrated water reverse osmosis recovery device 820 is connected to the concentrated water outlet end of the first concentrated water reverse osmosis recovery device 810, the water outlet end of the second concentrated water reverse osmosis recovery device 820 is connected to the clean water tank 300, the filtered purified water is returned from the water outlet end to the second concentrated water reverse osmosis recovery device 820, and the filtered purified water is not directly recycled from the purified water reverse osmosis recovery device.
Referring to fig. 1 and 2, in some embodiments, the filtration system 200 at least includes a mechanical filter 210, an activated carbon filter 220, a softening filter 230 and a precision filter 240, wherein the water inlet end of the mechanical filter 210 is communicated with the water outlet end of the raw water pump 110, the mechanical filter 210, the activated carbon filter 220, the softening filter 230 and the precision filter 240 are sequentially communicated along the water outlet direction, the water inlet end of the activated carbon filter 220 is communicated with the water outlet end of the mechanical filter 210, the water inlet end of the softening filter 230 is communicated with the water outlet end of the activated carbon filter 220, the water inlet end of the precision filter 240 is communicated with the water outlet end of the precision filter 240, and the water outlet end of the precision filter 240 is communicated with the clean water tank 300, and the mechanical filter 210, the activated carbon filter 220, the softening filter 230 and the precision filter 240 are all provided with concentrated water discharge ends. The filter system 200 is provided with a mechanical filter 210 for filtering and intercepting suspended matters, sediment and the like in the inlet water, and is required to be backwashed to regenerate a filter material layer when a certain pressure difference is reached, so as to remove the intercepted suspended matters, an activated carbon filter 220 for intercepting, adsorbing and filtering organic matters in the inlet water, adsorbing and filtering oxidative sterilizing effective chlorine, avoiding oxidative damage to a rear-stage reverse osmosis membrane, simultaneously adsorbing and decoloring the inlet water, guaranteeing the clarity of the outlet water, a softening filter 230 for removing calcium and magnesium ions in the inlet water, avoiding deposition of calcium carbonate or calcium sulfate, magnesium carbonate or magnesium sulfate on the surface of the rear-stage reverse osmosis membrane, and a precise filter 240 for intercepting and filtering possible particles in a pretreatment device and avoiding scratching or blocking a membrane.
Referring to fig. 1 and 2, in some embodiments, the high recovery pure water treatment apparatus branches the discharged concentrated water from the first stage reverse osmosis apparatus 400, and the portion of the discharged concentrated water from the first stage reverse osmosis apparatus 400 enters the concentrated water recovery system 800, is concentrated and filtered, and then flows back to the clean water tank 300 for reuse, and participates in the subsequent reverse osmosis and deionization processes, while the other portion of the discharged concentrated water from the first stage reverse osmosis apparatus 400 flows back to the filtration system 200 for reuse, and is purified from the beginning.
For example, as shown in fig. 1, in an embodiment, the high recovery pure water treatment apparatus further includes a concentrate tank 410, the concentrate discharge end of the first stage reverse osmosis apparatus 400 is connected to the water inlet end of the concentrate tank 410, the reverse osmosis concentrate discharged from the first stage reverse osmosis apparatus 400 is stored in the concentrate tank 410, the water outlet end of the concentrate tank 410 is connected to the raw water tank 100, a first reflux pump 412 is disposed on a pipeline between the concentrate tank 410 and the raw water tank 100, and the first reflux pump 412 drives the concentrate stored in the concentrate tank 410 to reflux to the raw water tank 100 for recycling.
As shown in fig. 2, in still another embodiment, the high recovery pure water treatment apparatus further includes a concentrate tank 410, the concentrate discharge end of the first stage reverse osmosis apparatus 400 is connected to the water inlet end of the concentrate tank 410, the reverse osmosis concentrate discharged from the first stage reverse osmosis apparatus 400 is stored in the concentrate tank 410, the water outlet end of the concentrate tank 410 is connected to the water inlet ends of the mechanical filter 210 and the activated carbon filter 220 through pipelines, a first reflux pump 412 is disposed on the pipeline between the concentrate tank 410 and the original water tank 100, and the first reflux pump 412 drives the concentrate stored in the concentrate tank 410 to reflux to the mechanical filter 210 and the activated carbon filter 220 through the pipeline for recycling.
Further, referring to fig. 1 and 2, in some embodiments, the outlet end of the concentrate tank 410 is provided with a second shut-off valve 411. The second shut-off valve 411 is closed before the water level of the concentrate tank 410 reaches a preset circulation water level, and is opened after the water level of the concentrate tank 410 reaches the preset circulation water level, so that the concentrate stored in the concentrate tank 410 can circulate in a return flow.
Referring to fig. 1 and 2, in some embodiments, the high recovery pure water treatment apparatus further includes a backwash water recovery system 900, wherein a water inlet end of the backwash water recovery system 900 is connected to a concentrated water outlet end of the filtration system 200, a pure water outlet end of the backwash water recovery system 900 is connected to the raw water tank 100, and the backwash water recovery system 900 is used for recovering backwash water filtered by the filtration system 200 and recycling usable pure water back to the raw water tank 100 after the backwash water is precipitated. The backwash water recovery system 900 comprises a backwash water recovery tank 910 and a plate-and-frame filter press 920, wherein a water inlet end of the backwash water recovery tank 910 is communicated with a concentrated water discharge end of a mechanical filter 210 and an activated carbon filter 220, a dosing port is formed in the backwash water recovery tank 910, backwash water stored in the backwash water recovery tank 910 is deposited and layered into supernatant liquid at an upper layer and precipitate at a bottom layer, a first return pipe 911 is communicated with the top of the backwash water recovery tank 910, the first return pipe 911 is communicated with the original water tank 100, a second return pump 912 is arranged on the first return pipe 911, the second return pump 912 drives supernatant liquid at the top layer of the backwash water recovery tank 910 to return to the original water tank 100, the bottom of the backwash water recovery tank 910 is communicated with the original water tank 100 through a pipeline, the water outlet end of the plate-and-frame filter press 920 is communicated with the original water tank 100 through a second return pipe 921, and concentrated water near the bottom in the backwash water recovery tank 910 is further filtered through the plate-and-frame filter press 920 and then flows back into the original water tank 100 through the second return pipe 921.
In summary, the utility model provides a high recovery pure water treatment device which further concentrates and recycles pure water and concentrated water discharged by a first-stage reverse osmosis device, so that the utilization rate of the high recovery pure water treatment device on tap water is improved, and the increase of water production cost caused by water resource waste is reduced. The high recovery pure water treatment device recycles the purified water and the concentrated water discharged by the primary reverse osmosis device so as to further improve the utilization rate of the input tap water.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (9)
1. The high recovery pure water treatment device is characterized by comprising a raw water tank, a raw water pump, a filtering system, a purified water tank, a primary reverse osmosis device, a secondary reverse osmosis device, an EDI device, a polishing mixed bed device and a concentrated water recovery system;
The raw water tank, the raw water pump, the filtering system, the clean water tank, the first-stage reverse osmosis device, the second-stage reverse osmosis device, the EDI device and the polishing mixed bed device are sequentially communicated along the discharge direction of the purified water, wherein the concentrated water discharge end of the second-stage reverse osmosis device is communicated with the clean water tank;
The water inlet end of the concentrated water recovery system is communicated with the concentrated water discharge end of the primary reverse osmosis device, and the water outlet end of the concentrated water recovery system is communicated with the water purifying tank;
The concentrated water recovery system comprises a first concentrated water reverse osmosis recovery device and a second concentrated water reverse osmosis recovery device, wherein the water inlet end of the first concentrated water reverse osmosis recovery device is communicated with the concentrated water discharge end of the primary reverse osmosis device, the water outlet end of the first concentrated water reverse osmosis recovery device is communicated with the water purifying tank, the water inlet end of the second concentrated water reverse osmosis recovery device is communicated with the concentrated water discharge end of the first concentrated water reverse osmosis recovery device, and the water outlet end of the second concentrated water reverse osmosis recovery device is communicated with the water purifying tank.
2. The high recovery pure water treatment apparatus according to claim 1, wherein said EDI apparatus has a concentrate discharge end, said concentrate discharge end of said EDI apparatus being in communication with said clean water tank.
3. The high recovery pure water treatment apparatus according to claim 1, wherein a first shut-off valve is provided between the clean water tank and the primary reverse osmosis unit.
4. The apparatus according to claim 1, wherein the filtration system comprises a mechanical filter and an activated carbon filter, the water inlet end of the mechanical filter is connected to the water outlet end of the raw water pump, the water inlet end of the activated carbon filter is connected to the water outlet end of the mechanical filter, the water outlet end of the activated carbon filter is connected to the clean water tank, and the mechanical filter and the activated carbon filter are provided with a concentrated water outlet end.
5. The high-recovery pure water treatment apparatus according to claim 1, further comprising a concentrate tank, wherein a water inlet end of the concentrate tank is communicated with a concentrate discharge end of the primary reverse osmosis device, a water outlet end of the concentrate tank is communicated with the raw water tank, and a first reflux pump is provided at a water outlet end of the concentrate tank.
6. The apparatus according to claim 4, further comprising a concentrate tank, wherein a water inlet end of the concentrate tank is connected to a concentrate discharge end of the first-stage reverse osmosis device, a water outlet end of the concentrate tank is connected to water inlet ends of the mechanical filter and the activated carbon filter through pipes, and a first return pump is provided at a water outlet end of the concentrate tank.
7. The apparatus according to claim 5 or 6, wherein the outlet end of the concentrate tank is provided with a second shut-off valve.
8. The high-recovery pure water treatment device according to claim 4, further comprising a backwash water recovery system, wherein the backwash water recovery system comprises a backwash water recovery tank and a plate-and-frame filter press, the water inlet end of the backwash water recovery tank is communicated with the concentrated water discharge end of the mechanical filter and the activated carbon filter, the top of the backwash water recovery tank is communicated with a first return pipe, a second return pump is arranged on the first return pipe, the first return pipe is communicated with the raw water tank, the bottom of the backwash water recovery tank is communicated with the plate-and-frame filter press through a pipeline, and the water outlet end of the plate-and-frame filter press is communicated with the raw water tank through a second return pipe.
9. The apparatus for treating high recovery rate pure water according to claim 4, wherein said filtration system further comprises a softening filter and a fine filter, said mechanical filter, said activated carbon filter, said softening filter and said fine filter are sequentially connected in the water outlet direction, and the water outlet end of said fine filter is connected to said clean water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202420589136.XU CN222821389U (en) | 2024-03-25 | 2024-03-25 | High recovery rate pure water treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202420589136.XU CN222821389U (en) | 2024-03-25 | 2024-03-25 | High recovery rate pure water treatment device |
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| CN222821389U true CN222821389U (en) | 2025-05-02 |
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| CN202420589136.XU Active CN222821389U (en) | 2024-03-25 | 2024-03-25 | High recovery rate pure water treatment device |
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