CN117550684A - Intermittent circulation type reverse osmosis pure water treatment system and pure water treatment method thereof - Google Patents
Intermittent circulation type reverse osmosis pure water treatment system and pure water treatment method thereof Download PDFInfo
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- CN117550684A CN117550684A CN202410024494.0A CN202410024494A CN117550684A CN 117550684 A CN117550684 A CN 117550684A CN 202410024494 A CN202410024494 A CN 202410024494A CN 117550684 A CN117550684 A CN 117550684A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 369
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 284
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 231
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 8
- 231100000719 pollutant Toxicity 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 5
- 230000035699 permeability Effects 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000011010 flushing procedure Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000007781 pre-processing Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical class [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a reverse osmosis pure water treatment system and method of processing pure water thereof, reverse osmosis pure water treatment system includes intermittent type circulation washing unit, intermittent type circulation washing unit control first valve, second valve and third valve open and close, and control the flusher wash reverse osmosis membrane, consequently can not change reverse osmosis membrane's the pollutant of accumulating on the reverse osmosis membrane is clear away, has solved current reverse osmosis pure water treatment system and has accumulated a large amount of pollutants and can't stably handle the problem of pure water for a long time because of reverse osmosis membrane.
Description
Technical Field
The utility model relates to a pure water treatment technical field, concretely relates to reverse osmosis pure water treatment system and method of handling pure water thereof, reverse osmosis pure water treatment system includes inlet channel, preprocessing device, pure water treatment device and pure water output pipeline, preprocessing device's first water inlet with the inlet channel coupling, preprocessing device is used for getting rid of impurity in the water flow of waiting to be handled that the inlet channel carried, pure water treatment device includes reverse osmosis membrane and pure water treatment cavity, reverse osmosis membrane set up in the pure water treatment cavity.
Background
The conventional reverse osmosis pure water treatment system generally comprises a water inlet pipe, a pretreatment device, a pure water treatment device and a pure water output pipe, wherein a first water inlet of the pretreatment device is coupled with the water inlet pipe, the pretreatment device is used for removing impurities in water flow to be treated conveyed by the water inlet pipe, the pure water treatment device comprises a reverse osmosis membrane and a pure water treatment cavity, and the reverse osmosis membrane is arranged in the pure water treatment cavity.
The reverse osmosis membrane is a core component of a conventional reverse osmosis pure water treatment system, has a precise pore structure, is used for removing small molecular impurities and salts in water flow, and allows pure water to pass through. However, existing reverse osmosis membranes are prone to accumulation of contaminants during long term use, including:
1. organic matters, the organic matters remained in the water can be attached to the surface of the reverse osmosis membrane;
2. microorganisms, which proliferate in a large amount in a warm environment and form a biofilm on the surface of the reverse osmosis membrane;
3. minerals, such as calcium magnesium salts, can scale on the surface of reverse osmosis membranes.
These contaminants severely reduce the water permeability of the reverse osmosis membrane, affect the filtration efficiency of the reverse osmosis membrane, and shorten the service life of the reverse osmosis membrane.
In view of the above problems, the current industry's main solution is to directly replace the severely contaminated reverse osmosis membrane, but this increases the cost of system operation.
Therefore, a new solution is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a reverse osmosis pure water treatment system and a method for treating pure water, which aim to solve the problem that the existing reverse osmosis pure water treatment system cannot stably treat pure water for a long time due to the fact that a large amount of pollutants are accumulated on a reverse osmosis membrane on the premise of not replacing the reverse osmosis membrane.
In order to solve the problems, the technical scheme of the application is as follows:
in a first aspect, a reverse osmosis pure water treatment system is provided, the reverse osmosis pure water treatment system comprises a water inlet pipeline, a pretreatment device, a pure water treatment device and a pure water output pipeline, a first water inlet of the pretreatment device is coupled with the water inlet pipeline, the pretreatment device is used for removing impurities in water flow to be treated conveyed by the water inlet pipeline, the pure water treatment device comprises a reverse osmosis membrane and a pure water treatment cavity, and the reverse osmosis membrane is arranged in the pure water treatment cavity; the pure water treatment cavity comprises a containing cavity, a second water inlet, a third water inlet, a second water outlet and a third water outlet, the second water inlet is coupled with the first water outlet of the pretreatment device, the reverse osmosis membrane is arranged in the containing cavity, the containing cavity is divided into a first cavity and a second cavity by the reverse osmosis membrane, the first cavity is communicated with the second water inlet, the third water inlet and the second water outlet, and the second cavity is communicated with the third water outlet; the pure water output pipeline is coupled with the second water outlet; the reverse osmosis pure water treatment system further comprises: a wastewater output pipe coupled to the third water outlet; intermittent cycle washing unit, including first valve, second valve, third valve, controller and flusher, first valve is connected first delivery port with the second water inlet, the second valve is connected the third water inlet with the flusher, the third valve is connected the third delivery port with waste water output pipeline, the controller with first valve, second valve, third valve and flusher electricity is connected, the controller is used for controlling first valve, second valve and third valve are opened and are closed, and be used for controlling when second valve with third valve is all opened the flusher is in the first cavity washes reverse osmosis membrane, wherein, when first valve is opened second valve with third valve is all closed, second valve with third valve is all opened when first valve is closed.
In the above-described reverse osmosis pure water treatment system, the reverse osmosis pure water treatment system further comprises: a booster coupled to the second water inlet and in communication with the first chamber, the booster for increasing the water pressure in the first chamber when the first valve is open; the controller is configured to control the supercharger to open when the first valve is open, and to control the supercharger to close when the first valve is closed.
In the reverse osmosis pure water treatment system, the first valve is cyclically opened and closed, and the combination of the second valve and the third valve is cyclically closed and opened.
In the above-described reverse osmosis pure water treatment system, the controller may be configured to control the first valve to be closed and the second valve and the third valve to be opened when a predetermined condition is satisfied, and to control the flusher to flush the reverse osmosis membrane in the first chamber when the second valve and the third valve are opened, and to control the first valve to be opened and the second valve and the third valve to be closed after the flusher has flushed the reverse osmosis membrane.
In the above-described reverse osmosis pure water treatment system, the reverse osmosis pure water treatment system further comprises: a first flow sensor disposed within the first chamber for sensing a first flow value Qfn of the water flow within the first chamber when the first valve is opened during an nth cycle period; a second flow sensor disposed within the second chamber for sensing a second flow value Qpn of the water flow within the second chamber when the first valve is opened during the nth cycle period; the controller is configured to calculate the permeability Rn of the reverse osmosis membrane in the nth cycle stage according to the following formula: rn= Qpn/Qfn; wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer.
In a second aspect, there is provided a method of treating pure water by the reverse osmosis pure water treatment system described above, the method comprising the steps of: the controller controls the first valve to be opened and controls the second valve and the third valve to be closed; the second water inlet of the pure water treatment cavity receives pretreated water flow from the pretreatment device and conveys the pretreated water flow to the first chamber of the pure water treatment cavity; the reverse osmosis membrane filters water flow in the first chamber and outputs pure water obtained after the filtering to the second chamber of the pure water treatment cavity; the pure water output pipeline outputs pure water in the second cavity; the controller controls the first valve to be closed and the second valve and the third valve to be opened; the controller controls the flusher to flush the reverse osmosis membrane within the first chamber; the wastewater output pipeline outputs wastewater containing pollutants washed out on the reverse osmosis membrane in the first cavity.
In the above method, the reverse osmosis pure water treatment system further comprises: a supercharger coupled to the second water inlet and in communication with the first chamber; the method further comprises the steps of: the controller controls the supercharger to be started when the first valve is started; the pressurizer applying pressure to the pretreated water stream when the first valve is open to increase the water pressure in the first chamber; the controller controls the supercharger to close when the first valve is closed.
In the above method, the first valve is cycled on and off, and the combination of the second valve and the third valve is cycled on and off.
In the above method, the controller controlling the first valve to close and the second valve and the third valve to open includes: the controller controls the first valve to be closed and controls the second valve and the third valve to be opened when a preset condition is met; the controller controlling the flusher to flush the reverse osmosis membrane within the first chamber includes: the controller controls the flusher to flush the reverse osmosis membrane in the first chamber when the second valve and the third valve are opened; the method further comprises the steps of: the controller controls the first valve to open and the second valve and the third valve to close after the flusher flushes the reverse osmosis membrane.
In the above method, the reverse osmosis pure water treatment system further comprises: a first flow sensor disposed within the first chamber; a second flow sensor disposed within the second chamber; before the controller controls the first valve to close and the second valve and the third valve to open when a predetermined condition is satisfied, the method further includes the steps of: the first flow sensor senses a first flow value Qfn of the water flow within the first chamber when the first valve is open during an nth cycle period; the second flow sensor senses a second flow value Qpn of the water flow within the second chamber when the first valve is open during the nth cycle period; the controller calculates the permeability Rn of the reverse osmosis membrane in the nth cycle stage according to the following formula: rn= Qpn/Qfn; wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer.
In the reverse osmosis pure water treatment system of the application, the intermittent circulation flushing device is used for controlling the first valve, the second valve and the third valve to be opened and closed and controlling the flusher to flush the reverse osmosis membrane, so that pollutants accumulated on the reverse osmosis membrane can be removed under the condition that the reverse osmosis membrane is not replaced, and the problem that the conventional reverse osmosis pure water treatment system cannot stably treat pure water for a long time due to a large amount of pollutants accumulated on the reverse osmosis membrane is solved.
Drawings
FIG. 1 is a schematic diagram of a reverse osmosis pure water treatment system of the present application;
FIG. 2 is a schematic view of a pure water treatment apparatus in the reverse osmosis pure water treatment system shown in FIG. 1;
FIG. 3 is a schematic view of a section A-A' of the pure water treatment apparatus shown in FIG. 2;
FIG. 4 is a schematic view of an embodiment of the water outlet of the flusher shown in FIG. 3;
FIG. 5 is a schematic view of another embodiment of the water outlet of the flusher shown in FIG. 3;
FIG. 6 is a flow chart of a method of treating pure water by the reverse osmosis pure water treatment system of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The technical solutions described below are only for explaining and explaining the idea of the present application and should not be construed as limiting the scope of protection of the present application.
Furthermore, the terms "first," "second," and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The term "plurality" and similar words mean two or more, unless specifically defined otherwise.
The utility model provides a reverse osmosis pure water treatment system, reverse osmosis pure water treatment system includes inlet channel 101, preprocessing device 102, pure water treatment device 103 and pure water output pipeline 104, preprocessing device 102's first water inlet with inlet channel 101 couples, preprocessing device 102 is arranged in getting rid of the impurity in the water flow of waiting to be treated that inlet channel 101 carried, pure water treatment device 103 includes reverse osmosis membrane 1035 and pure water treatment cavity, reverse osmosis membrane 1035 set up in the pure water treatment cavity.
The pure water treatment cavity comprises a containing cavity, a second water inlet 1037, a third water inlet, a second water outlet and a third water outlet, wherein the second water inlet 1037 is coupled with the first water outlet of the pretreatment device 102, the reverse osmosis membrane 1035 is arranged in the containing cavity, the containing cavity is divided into a first cavity 1033 and a second cavity 1036 by the reverse osmosis membrane 1035, the first cavity 1033 is communicated with the second water inlet 1037, the third water inlet and the second water outlet, and the second cavity 1036 is communicated with the third water outlet.
The pure water output pipe 104 is coupled to the second water outlet.
The reverse osmosis pure water treatment system also includes a wastewater output conduit 1034 and an intermittent circulation flushing device.
The waste water output conduit 1034 is coupled to the third water outlet.
The intermittent circulation flushing device comprises a first valve, a second valve, a third valve, a controller 1031 and a flusher 1032, wherein the first valve is connected with the first water outlet and the second water inlet 1037, the second valve is connected with the third water inlet and the flusher 1032, the third valve is connected with the third water outlet and the wastewater output pipeline 1034, the controller 1031 is electrically connected with the first valve, the second valve, the third valve and the flusher 1032, the controller 1031 is used for controlling the first valve, the second valve and the third valve to be opened and closed, and controlling the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 when the second valve and the third valve are both opened, wherein the second valve and the third valve are both closed when the first valve is opened, and the second valve and the third valve are both opened when the first valve is closed.
In the reverse osmosis pure water treatment system of the present application, since the intermittent circulation flushing device is included, the intermittent circulation flushing device controls the first valve, the second valve and the third valve to be opened and closed, and controls the flusher 1032 to flush the reverse osmosis membrane 1035, it is possible to remove the contaminants accumulated on the reverse osmosis membrane 1035 without replacing the reverse osmosis membrane 1035, and solve the problem that the existing reverse osmosis pure water treatment system cannot stably treat pure water for a long period of time because a large amount of contaminants are accumulated in the reverse osmosis membrane 1035.
The reverse osmosis pure water treatment system further comprises a booster, which may be for example a piston pump, coupled to the second water inlet 1037 and in communication with the first chamber 1033, for increasing the water pressure in the first chamber 1033 when the first valve is opened. The piston pump includes a sealed cylinder, a linearly reciprocable piston, a motor, and a crank link. The cylinder includes a cylinder inlet and a cylinder outlet. The piston is arranged in the cylinder body, the motor is coupled with the crank connecting rod, the crank connecting rod is coupled with the piston, and the motor drives the piston to move through the crank connecting rod. When the piston retreats, water is sucked from the inlet of the cylinder body, and when the piston advances, compressed high-pressure water flow is discharged. The piston continuously reciprocates, compressing and delivering the water flow, thereby increasing the water pressure in the first chamber 1033.
The controller 1031 is configured to control the supercharger to open when the first valve is open, and to control the supercharger to close when the first valve is closed.
The first valve is cycled on and off, and the combination of the second valve and the third valve is cycled on and off.
The controller 1031 is configured to control the first valve to be closed and the second valve and the third valve to be opened when a predetermined condition is satisfied, and to control the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 when the second valve and the third valve are opened, and to control the first valve to be opened and the second valve and the third valve to be closed after the flusher 1032 has flushed the reverse osmosis membrane 1035.
The cycle period of each cycle phase may or may not be fixed.
In the case where the cycle period of the cycle phase is not fixed, the reverse osmosis pure water treatment system further includes a first flow sensor and a second flow sensor. The first flow sensor is disposed within the first chamber 1033 for sensing a first flow value Qfn of the water flow within the first chamber 1033 when the first valve is opened during an nth cycle period. Wherein the phase in which the first valve is open (both the second valve and the third valve are closed) is a first phase in the cycle phase, and the phase in which the first valve is closed (both the second valve and the third valve are open) is a second phase in the cycle phase. The second flow sensor is disposed within the second chamber 1036 for sensing a second flow value Qpn of the water flow within the second chamber 1036 when the first valve is opened during the nth cycle period. The controller 1031 is configured to calculate the permeability Rn of the reverse osmosis membrane 1035 in the nth cycle stage according to the following formula:
Rn=Qpn/Qfn。
Wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer. The preset value R0 is a predetermined value, for example, r0=0.8r1=0.8qp1/Qf 1, however, other coefficients may be substituted for 0.8, such as 0.65, 0.67, 0.685, 0.7, 0.715, 0.73, 0.75, 0.77, 0.785, 0.8, 0.82, 0.835, 0.85, 0.865, 0.88, 0.9, 0.915, 0.93, 0.95, 0.97, 0.985, and R1 may be substituted for other initial values.
That is, the controller 1031 is further configured to compare the calculated permeability Rn with the preset value R0, and control the first valve to be closed and the second and third valves to be opened, and control the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 when the second and third valves are opened, in a case where the permeability Rn is less than or equal to the preset value R0.
In the case where the cycle period of the cycle phase is fixed, the predetermined condition is that a predetermined time arrives, the predetermined time being the duration of the cycle period.
As an improvement, the controller 1031 is further configured to control the direction of the water flow emitted from the washer 1032, and in particular, the controller 1031 is further configured to control the water flow emitted from the washer 1032 to sweep along a spiral path from the center position of the reverse osmosis membrane 1035 until the water flow sweeps to the edge position of the reverse osmosis membrane 1035; alternatively, the controller 1031 is further configured to control the water flow emitted from the washer 1032 to sweep along a spiral path from the edge position of the reverse osmosis membrane 1035 until the water flow sweeps to the center position of the reverse osmosis membrane 1035. This may allow the reverse osmosis membrane 1035 to be flushed cleaner.
As an improvement, the reverse osmosis pure water treatment system comprises a plurality of the flushers 1032, the plurality of the flushers 1032 are arranged in a circumferential array around a central axis of the reverse osmosis membrane 1035, each of the plurality of the flushers 1032 is used for injecting water flow to the reverse osmosis membrane 1035 to flush the reverse osmosis membrane 1035, and the water flow injected by each of the flushers 1032 sweeps from an edge position of the reverse osmosis membrane 1035 to a central position of the reverse osmosis membrane 1035 or from a central position of the reverse osmosis membrane 1035 to an edge position of the reverse osmosis membrane 1035, wherein the central axis is perpendicular to a plane in which the reverse osmosis membrane 1035 is located. In the above-described modification, since the plurality of the flushers 1032 are arranged in a circumferential array around the central axis of the reverse osmosis membrane 1035, and the water flow emitted from each of the flushers 1032 is emitted from the edge position of the reverse osmosis membrane 1035 to the central position of the reverse osmosis membrane 1035 or from the central position of the reverse osmosis membrane 1035 to the edge position of the reverse osmosis membrane 1035, the reverse osmosis membrane 1035 can be flushed clean entirely.
Further, the reverse osmosis pure water treatment system includes at least four of the flushers 1032, at least four and an even number of the flushers 1032 are arranged in a circumferential array, the arranging positions of the flushers 1032 are central symmetry with respect to the central axis of the reverse osmosis membrane 1035, the sweeping directions of water streams emitted from the two flushers 1032 arranged on the same diameter toward the reverse osmosis membrane 1035 are the same, that is, one of the two flushers 1032 arranged on the same diameter sweeps toward the reverse osmosis membrane 1035 from the central position of the reverse osmosis membrane 1035 toward the edge position of the reverse osmosis membrane 1035, and the other of the two flushers 1032 arranged on the same diameter sweeps toward the central position of the reverse osmosis membrane 1035 from the edge position of the reverse osmosis membrane 1035, the flushers 1032 are disposed in the first chamber 1033 opposite to the surface of the reverse osmosis membrane 1035. In this way, the water flows emitted from the two water flows do not intersect, so that the water flows do not mutually impact at the central position of the reverse osmosis membrane 1035, the flushing effect is prevented from being weakened due to the mutual impact of the two water flows, and the central position of the reverse osmosis membrane 1035 can be ensured to be cleaned.
The water outlet 10322 of the washer 1032 has a dot (planar) or linear shape, and the water flow emitted from the washer 1032 has a linear beam shape or a fan shape. Preferably, the water outlet 10322 of the washer 1032 is shaped like a wire, and the water flow emitted from the washer 1032 is shaped like a fan.
The controller 1031 is also used to control the area of the outlet 10322 of the flusher 1032.
In the case where the area of the water outlet 10322 of the washer 1032 is dot-shaped (planar), the controller 1031 is configured to control the expansion or contraction of the area of the water outlet 10322 of the washer 1032 according to the impact position of the water flow emitted from the washer 1032 on the reverse osmosis membrane 1035, specifically, in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the edge position of the reverse osmosis membrane 1035 to the center position of the reverse osmosis membrane 1035, the controller 1031 is configured to gradually decrease (linearly decrease) along the sweep path of the water flow emitted from the reverse osmosis membrane 1035 according to the area of the water outlet 10322 of the washer 1032, and in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the center position of the reverse osmosis membrane 1035, the controller 1031 is configured to gradually expand (linearly decrease) along the sweep path of the water flow 10322 of the reverse osmosis membrane 1035 according to the direction of the water flow emitted from the edge position of the reverse osmosis membrane 1035, and in the case where the area of the water outlet 10322 of the washer 1032 is the sweep path of the water flow from the reverse osmosis membrane 1035 is larger than the preset area of the water flow at the preset position of the reverse osmosis membrane 1035 at the edge position of the reverse osmosis membrane 1035. And the preset area s= (r/2) sin (pi/n), wherein r is the radius of the minimum circumcircle of the reverse osmosis membrane, and n is the number of the flushers.
In the case where the area of the water outlet 10322 of the irrigator 1032 is linear, the controller 1031 is configured to control the increase or decrease of the length of the water outlet 10322 of the irrigator 1032 according to the direction of the water flow emitted from the irrigator 1032 toward the central position of the reverse osmosis membrane 1035 at the impact position of the water flow emitted from the irrigator 1032 on the reverse osmosis membrane 1035, specifically, in the case where the direction of the water flow emitted from the irrigator 1032 toward the reverse osmosis membrane 1035 is the direction from the peripheral position of the reverse osmosis membrane 1035 toward the central position of the reverse osmosis membrane 1035, the controller 1031 is configured to gradually increase the sweep path of the water flow emitted from the irrigator 1032 along the water outlet 10322 of the reverse osmosis membrane 1035 according to the direction of the water flow emitted from the peripheral position of the reverse osmosis membrane 1035, that is the water flow 1032 is gradually decreased at the peripheral position of the reverse osmosis membrane 1035 at the preset position of the reverse osmosis membrane 1035, and the controller 1031 is configured to gradually decrease the length of the water flow 1032 toward the reverse osmosis membrane 1035 at the peripheral position of the reverse osmosis membrane 1035 at the preset position of the water flow 1032. Further, the controller 1031 is configured to control the length of the linear water outlet of the washer 1032 according to the shape of the edge line of the reverse osmosis membrane 1035, and when the water flow emitted from the washer 1032 sweeps along the sweep path (including the path from the center position of the reverse osmosis membrane 1035 to the edge position of the reverse osmosis membrane 1035 and the path from the edge position of the reverse osmosis membrane 1035 to the center position of the reverse osmosis membrane 1035), the fan-shaped water flow emitted from the linear water outlet of the washer 1032, which is controlled by the controller 1031, abuts against the impact position of the reverse osmosis membrane 1035 and the edge position of the reverse osmosis membrane 1035. This ensures that the water stream from the washer 1032 washes the edge of the reverse osmosis membrane 1035.
In order to prevent the accumulation of contaminants on the surface of the reverse osmosis membrane 1035, further, in the first phase of each cycle phase (phase in which the first valve is opened and the second valve and the third valve are both closed), during the application of pressure by the pressurizer to the water in the first chamber 1033, i.e. during the filtration of the water in the first chamber 1033 by the reverse osmosis membrane 1035, the controller 1031 is further configured to control the flusher 1032 to extract water from the first chamber 1033 and to emit water to the surface of the reverse osmosis membrane 1035 immersed by the water in the first chamber 1033, the pressure Pc of the water stream emitted by the flusher 1032 being greater than the pressure Pz applied by the pressurizer to the water in the first chamber 1033, preferably the ratio h=k=k of the pressure Pc of the water emitted by the pressurizer to the water in the first chamber 1033, wherein the water outlet areas of the flusher 1032, sm 0.0.55, sm.0.0.55, sc 0.0.55, sc.0.0.55, 0.0.55, and sc.0.0.55, 0.0.55, 0.55, and sc.0.0.55, 0.0.55, 0.0.0.55, for example. At this time, the water in the first chamber 1033 near the surface of the reverse osmosis membrane 1035 forms turbulence, and thus, it is difficult for contaminants to deposit on the surface of the reverse osmosis membrane 1035. This can reduce the number of times the reverse osmosis membrane 1035 needs to be washed, and thus can more effectively reduce the maintenance cost of the reverse osmosis pure water treatment system.
In order to control the direction of the water flow emitted from the flusher 1032, the flusher 1032 includes a first motor and a first transmission assembly, the first transmission assembly including a gear and the like, the first transmission assembly being coupled to the first motor and to the main body of the flusher 1032, the first motor being electrically connected to the controller 1031.
To achieve control of the area or length of the water outlet 10322 of the flusher 1032, the water outlet 10322 of the flusher 1032 is provided with a hinge 10321, the flusher 1032 comprises a second motor and a second transmission assembly, the second transmission assembly comprising a gear or the like, the second transmission assembly being coupled to the second motor and to the hinge 10321 of the flusher 1032, the second motor being electrically connected to the controller 1031. The flap 10321 includes a plurality of rectangular valve flaps which are hinged to the outlet of the flusher 1032. The dimensions of each of the valve flaps are the same. The valve plate is connected with a transmission assembly through a connection assembly, for example, the connection assembly is a piston rod, the transmission assembly is a sliding block, and the piston rod is coupled with the sliding block. The second motor is used for driving the piston rod to realize linear reciprocating motion of the sliding block, the sliding block drives the valve piece to pivot and open and close, and the opening angle of the valve piece is adjusted to adjust the length or the area of the water outlet.
As a modification, the reverse osmosis membrane 1035 is disposed on the top of the first chamber 1033 and the bottom of the second chamber 1036. This may prevent contaminants from being deposited on the surface of the reverse osmosis membrane 1035 by gravity.
Further, the first chamber 1033 includes a main chamber and a sub chamber, the main chamber and the sub chamber are communicated, the reverse osmosis membrane 1035 is disposed at the top of the main chamber, the sub chamber is disposed at the top of the main chamber, and the sub chamber is disposed at the peripheral portion of the position of the reverse osmosis membrane 1035 in the top of the main chamber, the main chamber is used for containing water to be treated (filtered) by the reverse osmosis membrane 1035, and the sub chamber is used for containing bubbles in the water of the main chamber, particularly, the water surface of the water in the sub chamber is higher than the height of the reverse osmosis membrane 1035, that is, the bubbles in the water of the main chamber automatically enter the sub chamber after floating. The purpose of this is to avoid bubbles in the water of the main chamber from rising to the top of the main chamber and to isolate the water in the main chamber from the reverse osmosis membrane 1035, thereby preventing the reverse osmosis membrane 1035 from being unable to contact the water in the main chamber due to bubbles rising.
Further, a gas release valve is disposed at the top or the side of the secondary chamber, a liquid level sensor is disposed at the bottom of the secondary chamber (where the secondary chamber is communicated with the primary chamber), the gas release valve is electrically connected with the liquid level sensor, or the gas release valve is electrically connected with the controller 1031, the controller 1031 is electrically connected with the liquid level sensor, the liquid level sensor is used for sensing the height of the water surface of the water in the secondary chamber, and the gas release valve is used for releasing part of the air contained in the secondary chamber when the height of the water surface of the water in the secondary chamber is lower than a predetermined height value. This avoids the secondary chamber being unable to receive air bubbles (air) in the primary chamber.
Further, the controller 1031 is configured to receive data of a level of water in the secondary chamber sensed by the level sensor, determine whether the level of water in the secondary chamber is lower than the predetermined level value according to the data, and control the air release valve to release a predetermined volume of air when the level of water in the secondary chamber is lower than the predetermined level value.
With the intermittent circulation washing apparatus in the system, the reverse osmosis membrane 1035 can be washed and decontaminated inside the system without replacing the reverse osmosis membrane 1035, so that the filtration efficiency and the service life of the reverse osmosis membrane 1035 can be improved.
The application also provides a method for treating pure water by the reverse osmosis pure water treatment system, which comprises the following steps:
in step 601, the controller 1031 controls the first valve to open and controls the second valve and the third valve to close.
Step 602, the second water inlet 1037 of the pure water treatment chamber receives a pretreated water stream from the pretreatment apparatus 102 and delivers the pretreated water stream to the first chamber 1033 of the pure water treatment chamber.
Step 603, the reverse osmosis membrane 1035 filters the water flow in the first chamber 1033, and outputs the filtered pure water to the second chamber 1036 of the pure water treatment chamber.
Step 604, the pure water output pipe 104 outputs pure water in the second chamber 1036.
Step 605, the controller 1031 controls the first valve to be closed and controls the second valve and the third valve to be opened.
Step 606, the controller 1031 controls the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033.
Step 607, the wastewater output conduit 1034 outputs wastewater containing contaminants rinsed from the reverse osmosis membrane 1035 in the first chamber 1033.
The reverse osmosis pure water treatment system further comprises a pressurizer coupled to the second water inlet 1037 and in communication with the first chamber 1033.
The method further comprises the steps of:
the controller 1031 controls the supercharger to be turned on when the first valve is turned on.
The pressurizer applies pressure to the pretreated water stream when the first valve is open to increase the water pressure in the first chamber 1033.
The controller 1031 controls the supercharger to close when the first valve is closed.
The first valve is cycled on and off, and the combination of the second valve and the third valve is cycled on and off.
The controller 1031 controlling the first valve to be closed and the second valve and the third valve to be opened includes:
the controller 1031 controls the first valve to be closed and controls the second valve and the third valve to be opened when a predetermined condition is satisfied.
The controller 1031 controlling the flusher 1032 to flush the reverse osmosis membrane 1035 within the first chamber 1033 includes:
the controller 1031 controls the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 when the second valve and the third valve are opened.
The method further comprises the steps of:
the controller 1031 controls the first valve to be opened and the second and third valves to be closed after the reverse osmosis membrane 1035 is flushed by the flusher 1032.
The cycle period of each cycle phase may or may not be fixed.
In the case where the cycle period of the cycle phase is not fixed, the reverse osmosis pure water treatment system further includes a first flow sensor and a second flow sensor. The first flow sensor is disposed within the first chamber 1033. The second flow sensor is disposed within the second chamber 1036.
Before the controller 1031 controls the first valve to close and the second valve and the third valve to open when a predetermined condition is satisfied, the method further includes the steps of:
the first flow sensor senses a first flow value Qfn of the water flow within the first chamber 1033 when the first valve is opened during the nth cycle period. Wherein the phase in which the first valve is open (both the second valve and the third valve are closed) is a first phase in the cycle phase, and the phase in which the first valve is closed (both the second valve and the third valve are open) is a second phase in the cycle phase.
The second flow sensor senses a second flow value Qpn of the water flow within the second chamber 1036 when the first valve is opened during the nth cycle period.
The controller 1031 calculates the permeability Rn of the reverse osmosis membrane 1035 in the nth cycle phase according to the following formula:
Rn=Qpn/Qfn。
wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer. The preset value R0 is a predetermined value, for example, r0=0.8r1=0.8qp1/Qf 1, however, other coefficients may be substituted for 0.8, such as 0.65, 0.67, 0.685, 0.7, 0.715, 0.73, 0.75, 0.77, 0.785, 0.8, 0.82, 0.835, 0.85, 0.865, 0.88, 0.9, 0.915, 0.93, 0.95, 0.97, 0.985, and R1 may be substituted for other initial values.
That is, the controller 1031 compares the calculated permeability Rn with the preset value R0, and controls the first valve to be closed and the second and third valves to be opened, and controls the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 when the second and third valves are opened, in a case where the permeability Rn is less than or equal to the preset value R0.
In the case where the cycle period of the cycle phase is fixed, the predetermined condition is that a predetermined time arrives, the predetermined time being the duration of the cycle period.
As an improvement, the controller 1031 controlling the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 includes:
the controller 1031 controls the direction of the water flow emitted from the washer 1032, and in particular, the controller 1031 controls the water flow emitted from the washer 1032 to start sweeping along a spiral path from the center position of the reverse osmosis membrane 1035 until sweeping to the edge position of the reverse osmosis membrane 1035; alternatively, the controller 1031 controls the water flow emitted from the washer 1032 to sweep along a spiral path from the edge position of the reverse osmosis membrane 1035 until the water flow sweeps to the center position of the reverse osmosis membrane 1035. This may allow the reverse osmosis membrane 1035 to be flushed cleaner.
As an improvement, the controller 1031 controlling the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 includes:
the controller 1031 controls the water flow emitted from each of the plurality of the flushers 1032 arranged in a circumferential array about a central axis of the reverse osmosis membrane 1035, wherein the central axis is perpendicular to a plane in which the reverse osmosis membrane 1035 is located, to sweep from an edge position of the reverse osmosis membrane 1035 to a center position of the reverse osmosis membrane 1035 or from the center position of the reverse osmosis membrane 1035 to an edge position of the reverse osmosis membrane 1035. Since the plurality of the flushers 1032 are arranged in a circumferential array around the central axis of the reverse osmosis membrane 1035, and the water flow emitted from each of the flushers 1032 is emitted from the edge position of the reverse osmosis membrane 1035 to the central position of the reverse osmosis membrane 1035 or from the central position of the reverse osmosis membrane 1035 to the edge position of the reverse osmosis membrane 1035, the reverse osmosis membrane 1035 can be flushed completely.
Further, the sweeping directions of the water streams emitted from the two flushers 1032 arranged on the same diameter toward the reverse osmosis membrane 1035 are the same, and the controller 1031 controls the flushers 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033 includes:
the controller 1031 controls water flow emitted from one of two of the flushers 1032 arranged in a circumferential array at a position on the same diameter to sweep toward the reverse osmosis membrane 1035 from a center position of the reverse osmosis membrane 1035 to an edge position of the reverse osmosis membrane 1035, and controls water flow emitted from another of the two of the flushers 1032 arranged in a circumferential array at a position on the same diameter to sweep toward the reverse osmosis membrane 1035 from an edge position of the reverse osmosis membrane 1035. In this way, the water flows emitted from the two water flows do not intersect, so that the water flows do not mutually impact at the central position of the reverse osmosis membrane 1035, the flushing effect is prevented from being weakened due to the mutual impact of the two water flows, and the central position of the reverse osmosis membrane 1035 can be ensured to be cleaned.
The controller 1031 controlling the flusher 1032 to flush the reverse osmosis membrane 1035 within the first chamber 1033 includes:
the controller 1031 controls the area of the outlet 10322 of the flusher 1032.
In the case where the area of the water outlet 10322 of the washer 1032 is dot-shaped (planar), the controller 1031 controls the expansion or contraction of the area of the water outlet 10322 of the washer 1032 according to the direction of the water flow emitted from the washer 1032 on the reverse osmosis membrane 1035, specifically, in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the edge position of the reverse osmosis membrane 1035 to the center position of the reverse osmosis membrane 1035, the controller 1031 gradually decreases (linearly decreases) along the sweep path of the water flow emitted from the reverse osmosis membrane 1035 according to the area of the water outlet 10322 of the washer 1032, and in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the center position of the reverse osmosis membrane 1035, the controller 1031 gradually expands along the direction of the water flow from the edge position of the reverse osmosis membrane 1035 according to the direction of the water flow emitted from the reverse osmosis membrane 1035, that is the area of the water flow 10322 gradually expands at the preset position on the reverse osmosis membrane 1035, that is larger than the preset area of the water flow at the reverse osmosis membrane 1035 at the preset position when the area of the water flow is emitted from the reverse osmosis membrane 1032 at the preset position 1035. And the preset area s= (r/2) sin (pi/n), wherein r is the radius of the minimum circumcircle of the reverse osmosis membrane, and n is the number of the flushers.
In the case where the area of the water outlet 10322 of the washer 1032 is linear, the controller 1031 controls the increase or decrease of the length of the water outlet 10322 of the washer 1032 according to the impact position of the water flow emitted from the washer 1032 on the reverse osmosis membrane 1035, specifically, in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the edge position of the reverse osmosis membrane 1035 to the center position of the reverse osmosis membrane 1035, the controller 1031 gradually increases along the sweep path of the water flow emitted from the reverse osmosis membrane 1035 according to the length of the water outlet 10322 of the washer 1032, in the case where the direction of the water flow emitted from the washer 1032 to the reverse osmosis membrane 1035 is the direction from the center position of the reverse osmosis membrane 1035, the controller 1 gradually decreases along the sweep path of the water flow emitted from the reverse osmosis membrane 1035 to the reverse osmosis membrane 1035 according to the direction of the water flow emitted from the edge position of the reverse osmosis membrane 1035, that is the preset length of the water flow 1032 is smaller than the reverse osmosis membrane 1035 at the preset position at the edge position 1035, and the preset length of the water flow 1032 is larger than the preset length of the water flow at the reverse osmosis membrane 1035 at the preset position at the edge position 1035. Further, the controller 1031 controls the length of the linear water outlet of the washer 1032 according to the shape of the edge line of the reverse osmosis membrane 1035, and when the water flow emitted from the washer 1032 sweeps along the sweep path (including the path from the center position of the reverse osmosis membrane 1035 to the edge position of the reverse osmosis membrane 1035 and the path from the edge position of the reverse osmosis membrane 1035 to the center position of the reverse osmosis membrane 1035), the fan-shaped water flow emitted from the linear water outlet of the washer 1032 controlled by the controller 1031 abuts against the impact position on the reverse osmosis membrane 1035 and the edge position of the reverse osmosis membrane 1035. This ensures that the water stream from the washer 1032 washes the edge of the reverse osmosis membrane 1035.
To prevent the accumulation of contaminants on the surface of the reverse osmosis membrane 1035, further, the controller 1031 controlling the flusher 1032 to flush the reverse osmosis membrane 1035 within the first chamber 1033 includes:
during the first phase of each cycle (the phase in which the first valve is open and the second and third valves are closed), the controller 1031 controls the flusher 1032 to draw water from the first chamber 1033 and to eject water flow toward the surface of the reverse osmosis membrane 1035 immersed in the water in the first chamber 1033 during the process in which the pressure of the water in the first chamber 1033 is applied by the pressure booster, that is, during the process in which the water in the first chamber 1033 is filtered by the reverse osmosis membrane 1035, the pressure Pc of the water flow emitted from the flusher 1032 is greater than the pressure Pz applied by the pressurizer to the water in the first chamber 1033, preferably, the ratio h=pc/pz=k (Sm/Sc) of the pressure Pc of the water flow emitted from the flusher 1032 to the pressure Pz applied by the pressurizer to the water in the first chamber 1033, where Sm is the area of the reverse osmosis membrane 1035 and Sc is the area of the water outlet 10322 of the flusher 1032, and k has a value ranging from 0.35 to 0.55, for example, k is 0.35, 0.37, 0.39, 0.4, 0.42, 0.44, 0.45, 0.47, 0.49, 0.51, 0.53, and 0.55. At this time, the water in the first chamber 1033 near the surface of the reverse osmosis membrane 1035 forms turbulence, and thus, it is difficult for contaminants to deposit on the surface of the reverse osmosis membrane 1035. This can reduce the number of times the reverse osmosis membrane 1035 needs to be washed, and thus can more effectively reduce the maintenance cost of the reverse osmosis pure water treatment system.
Further, in the case where the reverse osmosis membrane 1035 is provided on the top of the first chamber 1033 and the bottom surface of the second chamber 1036, and the first chamber 1033 includes a main chamber and a sub chamber, the main chamber and the sub chamber are communicated, the reverse osmosis membrane 1035 is provided on the top of the main chamber, the sub chamber is provided on the top of the main chamber, and the sub chamber is located at a peripheral portion of the position of the reverse osmosis membrane 1035 in the top of the main chamber, the method further includes the steps of:
the liquid level sensor arranged at the bottom of the secondary chamber (the communication part of the secondary chamber and the main chamber) senses the height of the water surface of the water in the secondary chamber.
The controller 1031 receives the data of the height of the water surface of the water in the secondary chamber sensed by the liquid level sensor, determines whether the height of the water surface of the water in the secondary chamber is lower than the predetermined height value according to the data, and controls a release valve provided at the top or side of the secondary chamber to release a predetermined volume of air when the height of the water surface of the water in the secondary chamber is lower than the predetermined height value.
And when the height of the water surface of the secondary chamber is lower than a preset height value, the air release valve releases part of air contained in the secondary chamber.
This avoids the secondary chamber being unable to receive air bubbles (air) in the primary chamber.
In the method for treating pure water in the reverse osmosis pure water treatment system of the present application, since the controller 1031 controls the first valve to be closed and the second valve and the third valve to be opened, the controller 1031 controls the flusher 1032 to flush the reverse osmosis membrane 1035 in the first chamber 1033, and the waste water output pipe 1034 outputs waste water containing the contaminants flushed out of the reverse osmosis membrane 1035 in the first chamber 1033. Therefore, the reverse osmosis membrane 1035 can be washed and decontaminated in the system without replacing the reverse osmosis membrane 1035, the problem that the existing reverse osmosis pure water treatment system cannot stably treat pure water for a long time due to the fact that a large amount of pollutants are accumulated by the reverse osmosis membrane 1035 is solved, and the filtration efficiency and the service life of the reverse osmosis membrane 1035 are improved.
The foregoing description of the embodiments of the present application has been provided only to assist in understanding the technical solutions of the present application and the core ideas thereof. Modifications and substitutions for some of the features described herein will be readily apparent to those of ordinary skill in the art without departing from the spirit and scope of the appended claims.
Claims (10)
1. A reverse osmosis pure water treatment system, the reverse osmosis pure water treatment system comprises a water inlet pipeline, a pretreatment device, a pure water treatment device and a pure water output pipeline, a first water inlet of the pretreatment device is coupled with the water inlet pipeline, the pretreatment device is used for removing impurities in water flow to be treated conveyed by the water inlet pipeline, the pure water treatment device comprises a reverse osmosis membrane and a pure water treatment cavity, and the reverse osmosis membrane is arranged in the pure water treatment cavity;
the device is characterized in that the pure water treatment cavity comprises a containing cavity, a second water inlet, a third water inlet, a second water outlet and a third water outlet, wherein the second water inlet is coupled with the first water outlet of the pretreatment device, the reverse osmosis membrane is arranged in the containing cavity, the containing cavity is divided into a first cavity and a second cavity by the reverse osmosis membrane, the first cavity is communicated with the second water inlet, the third water inlet and the second water outlet, and the second cavity is communicated with the third water outlet;
the pure water output pipeline is coupled with the second water outlet;
the reverse osmosis pure water treatment system further comprises:
A wastewater output pipe coupled to the third water outlet;
intermittent cycle washing unit, including first valve, second valve, third valve, controller and flusher, first valve is connected first delivery port with the second water inlet, the second valve is connected the third water inlet with the flusher, the third valve is connected the third delivery port with waste water output pipeline, the controller with first valve, second valve, third valve and flusher electricity is connected, the controller is used for controlling first valve, second valve and third valve are opened and are closed, and be used for controlling when second valve with third valve is all opened the flusher is in the first cavity washes reverse osmosis membrane, wherein, when first valve is opened second valve with third valve is all closed, second valve with third valve is all opened when first valve is closed.
2. The reverse osmosis pure water treatment system of claim 1, further comprising:
a booster coupled to the second water inlet and in communication with the first chamber, the booster for increasing the water pressure in the first chamber when the first valve is open;
The controller is configured to control the supercharger to open when the first valve is open, and to control the supercharger to close when the first valve is closed.
3. The system of claim 1, wherein the first valve is cycled on and off and the combination of the second valve and the third valve is cycled on and off.
4. A reverse osmosis pure water treatment system according to claim 3, wherein the controller is configured to control the first valve to be closed and the second valve and the third valve to be opened when a predetermined condition is satisfied, and to control the flusher to flush the reverse osmosis membrane in the first chamber when the second valve and the third valve are opened, and to control the first valve to be opened and the second valve and the third valve to be closed after the flusher has flushed the reverse osmosis membrane.
5. The reverse osmosis pure water treatment system of claim 4, further comprising:
a first flow sensor disposed within the first chamber for sensing a first flow value Qfn of the water flow within the first chamber when the first valve is opened during an nth cycle period;
A second flow sensor disposed within the second chamber for sensing a second flow value Qpn of the water flow within the second chamber when the first valve is opened during the nth cycle period;
the controller is configured to calculate the permeability Rn of the reverse osmosis membrane in the nth cycle stage according to the following formula:
Rn=Qpn/Qfn；
wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer.
6. A method of treating pure water in a reverse osmosis pure water treatment system according to claim 1, said method comprising the steps of:
the controller controls the first valve to be opened and controls the second valve and the third valve to be closed;
the second water inlet of the pure water treatment cavity receives pretreated water flow from the pretreatment device and conveys the pretreated water flow to the first chamber of the pure water treatment cavity;
the reverse osmosis membrane filters water flow in the first chamber and outputs pure water obtained after the filtering to the second chamber of the pure water treatment cavity;
the pure water output pipeline outputs pure water in the second cavity;
The controller controls the first valve to be closed and the second valve and the third valve to be opened;
the controller controls the flusher to flush the reverse osmosis membrane within the first chamber;
the wastewater output pipeline outputs wastewater containing pollutants washed out on the reverse osmosis membrane in the first cavity.
7. The method of claim 6, wherein the reverse osmosis pure water treatment system further comprises:
a supercharger coupled to the second water inlet and in communication with the first chamber;
the method further comprises the steps of:
the controller controls the supercharger to be started when the first valve is started;
the pressurizer applying pressure to the pretreated water stream when the first valve is open to increase the water pressure in the first chamber;
the controller controls the supercharger to close when the first valve is closed.
8. The method of claim 6, wherein the first valve cycles open and closed and the combination of the second valve and the third valve cycles closed and open.
9. The method of claim 8, wherein the controller controlling the first valve to close and the second valve and the third valve to both open comprises:
The controller controls the first valve to be closed and controls the second valve and the third valve to be opened when a preset condition is met;
the controller controlling the flusher to flush the reverse osmosis membrane within the first chamber includes:
the controller controls the flusher to flush the reverse osmosis membrane in the first chamber when the second valve and the third valve are opened;
the method further comprises the steps of:
the controller controls the first valve to open and the second valve and the third valve to close after the flusher flushes the reverse osmosis membrane.
10. The method of claim 9, wherein the reverse osmosis pure water treatment system further comprises:
a first flow sensor disposed within the first chamber;
a second flow sensor disposed within the second chamber;
before the controller controls the first valve to close and the second valve and the third valve to open when a predetermined condition is satisfied, the method further includes the steps of:
the first flow sensor senses a first flow value Qfn of the water flow within the first chamber when the first valve is open during an nth cycle period;
The second flow sensor senses a second flow value Qpn of the water flow within the second chamber when the first valve is open during the nth cycle period;
the controller calculates the permeability Rn of the reverse osmosis membrane in the nth cycle stage according to the following formula:
Rn=Qpn/Qfn；
wherein the predetermined condition is that the permeability Rn is less than or equal to a preset value R0, and n is a positive integer.
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| CN202410024494.0A CN117550684B (en) | 2024-01-08 | 2024-01-08 | Intermittent circulation type reverse osmosis pure water treatment system and pure water treatment method thereof |
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| CN202410024494.0A CN117550684B (en) | 2024-01-08 | 2024-01-08 | Intermittent circulation type reverse osmosis pure water treatment system and pure water treatment method thereof |
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| CN216734207U (en) * | 2021-12-08 | 2022-06-14 | 杭州大盒子汽车服务有限公司 | Car washer shower nozzle subassembly |
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|---|---|---|---|---|
| GB191418096A (en) * | 1914-07-31 | 1915-06-17 | Edmund Alibert Andrews | Improvements in Filters. |
| CN204051443U (en) * | 2014-09-11 | 2014-12-31 | 广州市地龙环保技术有限公司 | Filter for purifying water |
| CN204582721U (en) * | 2015-05-13 | 2015-08-26 | 松阳县凯华化工有限公司 | A kind of filter cloth cleaning device |
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| JP2020075210A (en) * | 2018-11-06 | 2020-05-21 | 三浦工業株式会社 | Membrane separation unit |
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|---|---|
| CN117550684B (en) | 2024-10-08 |
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