CN109078499A - A method of with rolled membrane module strainability can be restored on household water-purifying machine - Google Patents
A method of with rolled membrane module strainability can be restored on household water-purifying machine Download PDFInfo
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- CN109078499A CN109078499A CN201811043191.4A CN201811043191A CN109078499A CN 109078499 A CN109078499 A CN 109078499A CN 201811043191 A CN201811043191 A CN 201811043191A CN 109078499 A CN109078499 A CN 109078499A
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- 239000012528 membrane Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 589
- 238000000746 purification Methods 0.000 claims abstract description 72
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 50
- 231100000719 pollutant Toxicity 0.000 claims abstract description 50
- 238000006073 displacement reaction Methods 0.000 claims abstract description 43
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 25
- 239000011707 mineral Substances 0.000 claims abstract description 25
- 238000002791 soaking Methods 0.000 claims abstract description 14
- 238000007654 immersion Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims description 23
- 238000001223 reverse osmosis Methods 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000001728 nano-filtration Methods 0.000 claims description 4
- 239000003403 water pollutant Substances 0.000 claims 2
- 238000005096 rolling process Methods 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 16
- 230000000903 blocking effect Effects 0.000 abstract description 13
- 238000011084 recovery Methods 0.000 abstract description 12
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract description 9
- 239000001095 magnesium carbonate Substances 0.000 abstract description 9
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 8
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 6
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 6
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 6
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 208000004434 Calcinosis Diseases 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 22
- 238000003825 pressing Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 238000005374 membrane filtration Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013014 water-saving technology Methods 0.000 description 2
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical compound [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/10—Use of feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
- B01D2321/2066—Pulsated flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/28—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by soaking or impregnating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of with the method that can restore rolled membrane module strainability on household water-purifying machine, this method comprises: displacement step: replacing the raw water and concentrated water in the raw water runner with displacement water, reduce the pollutant or mineral concentration of the water in the raw water runner；The displacement water is water purification or pure water；Soaking step: after displacement, the film surface of raw water side inside the putamina is changed water and soaked with described set；Pulse lavage step: after immersion, the raw water runner is rinsed with pulsed water flow.Compared with prior art the device have the advantages that are as follows: a kind of method that can restore rolled membrane module strainability on household water-purifying machine provided by the invention, the film for being not only suitable for blocking due to containing more colloid etc. in water and generating the pollutant of SDI is filtered performance recovery, be also applied for because in water calcium ions and magnesium ions concentration it is higher due to film surface deposit calcium carbonate, magnesium carbonate and the film blocked is filtered performance recovery.
Description
Technical field
The present invention relates to drinking water to produce field, and in particular to a kind of with can restore rolled membrane module on household water-purifying machine
The method of strainability.
Background technique
Membrane water purifier, especially traditional household reverse osmosis water purifier, water purification producing water ratio is relatively low, and water resource waste is tight
Weight.In order to save water resource, China has promulgated state compulsory standard GB34914-2017, and " reverse osmosis water purifier water imitates limit value
And water imitates grade " (hereinafter referred to as water criterion is quasi-), encourage the water-saving technology of Corporation R & D reverse osmosis water purifier.In the standard,
The water effect of reverse osmosis water purifier is divided into 1~5 grade, corresponding water purification producing water ratio is respectively 60%, 55%, 50%, 45%
With 35%, and by water imitate 2 grades of grade specified in water purification producing water ratio 55% be used as water-saving evaluation of estimate, i.e. water effect reaches 1 grade and 2 grades
The machine of (water purification producing water ratio reaches 60% and 55%) is only water-saving reverse osmosis water purifier, forbids water purification producing water ratio lower than 35%
Launch.
Currently, have the water-saving technology of some Corporation R & Ds reverse osmosis water purifier, such as:
1. changing the trend of rolled membrane module internal water flow passages, that is, extend the length of raw water runner, shortens raw water runner
Width, make under same flow condition, the flow velocity of raw water significantly rises, and the pollutant in water is not easy heavy in the raw water side of film
Product plays the role of that film is delayed to block.
2. rinsing using pulse mode, strengthen flushing effect, under more thoroughly rinsing the pollutant for being deposited on film surface
Come, plays the role of that film is delayed to block.
3. concentrated water largely flows back, fraction discharge, reduce the rate of recovery of film, raw water washes away by force during reinforcing water processed
Degree, then cooperate the processing effect for reinforcing pretreatment filter, play the role of that film is delayed to block.
These are all the prior arts for delaying film to block, and fruitful.But the above method is primarily adapted for use in water
The anti-clogging technology for generating the pollutant blocking film of SDI there are colloid etc. and taking, and for there are more calcium ions and magnesium ions in water
Then effect is poor for the water of easy fouling, therefore restores rolled membrane module strainability for how this water is realized, it is also necessary to research and develop
New technology.
In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, on the one hand provides a kind of net used in household
It can restore the method for rolled membrane module strainability in water dispenser, the rolled membrane module is arranged in inside the putamina of film process device,
Water inlet inside the rolled membrane module on putamina described in the inlet communication of raw water runner, the outlet of the raw water runner
Concentrated water discharge mouth on the putamina, the water outlet inside the rolled membrane module on putamina described in the outlet of water purification runner
Mouthful, which is characterized in that described method includes following steps:
Displacement step: the raw water and concentrated water in the raw water runner are replaced with displacement water, is reduced in the raw water runner
The pollutant or mineral concentration of water；The displacement water is water purification or pure water；
Soaking step: after displacement, the film surface of raw water side inside the putamina is changed water and soaked with described set；
Pulse lavage step: after immersion, the raw water runner is rinsed with pulsed water flow.
Preferably, the method also includes Primary replacement steps before the displacement step: being rushed with the raw water with pressure
The raw water side for washing the film of the rolled membrane module, pollutant or the minerals for tentatively reducing the water in the raw water runner are dense
Degree.
Preferably, the immersion duration of the soaking step is no less than 10 minutes.
Preferably, no less than three times, each pulse lavage duration is no longer than 3 seconds washing time in the pulse lavage step
And be not shorter than 1 second, the stopping duration between two pulse lavages is not shorter than 1 second.
Preferably, the raw water side duration that raw water rinses the film of the rolled membrane module in the Primary replacement step is no longer than
15 seconds.
Another aspect provides a kind of method that can restore rolled membrane module strainability on household water-purifying machine, described
Rolled membrane module is arranged in inside the putamina of film process device, film described in the inlet communication of raw water runner inside the rolled membrane module
Water inlet on shell, the concentrated water discharge mouth on putamina described in the outlet of the raw water runner, inside the rolled membrane module
Water outlet on putamina described in the outlet of water purification runner, which is characterized in that described method includes following steps:
Displacement backwash step: the raw water and concentrated water in the raw water runner are replaced with displacement water, reduces the raw water stream
The pollutant or mineral concentration of water in road；The reverse differential pressure born simultaneously by film is no more than in a manner of 5m water column, with setting
Hydraulic pressure is changed to the water purification runner and raw water runner, film is backwashed；The displacement water is water purification or pure water；
Soaking step: after displacement, the film surface of raw water side inside the putamina is changed water and soaked with described set；
Pulse lavage step: after immersion, the raw water runner is rinsed with pulsed water flow.
Preferably, the method also includes Primary replacement steps: with pressure before the displacement backwash step
Raw water rinses the raw water side of the film of the rolled membrane module, tentatively reduces the pollutant or mineral of the water in the raw water runner
Matter concentration.
Preferably, before carrying out the pulse lavage step, the method is also wrapped after completing the soaking step
It includes:
Positive and negative joint rinsing step: by reverse differential pressure that film is born no more than in a manner of 5m water column, with displacement hydraulic pressure to institute
Water purification runner and raw water runner are stated, the positive and negative joint for be not shorter than 30 seconds to film is rinsed.
Preferably, the immersion duration of the soaking step is not shorter than 10 minutes；
Preferably, the washing time of the pulse lavage step is no less than three times, each pulse lavage duration is no longer than 3 seconds
And be not shorter than 1 second, the stopping duration between two pulse lavages is not shorter than 1 second.
Preferably, the raw water side duration that raw water rinses the film of the rolled membrane module in the Primary replacement step is no longer than
15 seconds.
Preferably, the film in the rolled membrane module is reverse osmosis membrane or nanofiltration membrane.
Compared with prior art the device have the advantages that are as follows: it is provided by the invention a kind of on household water-purifying machine
The method that can restore rolled membrane module strainability is not only suitable for the pollutant for generating SDI because containing more colloid etc. in water
And block film be filtered performance recovery, be also applied for because in water calcium ions and magnesium ions concentration it is higher due to film surface deposit carbonic acid
Calcium, magnesium carbonate and the film blocked is filtered performance recovery.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution in various embodiments of the present invention
The attached drawing used is briefly described.
Fig. 1 is a kind of with the side that can restore rolled membrane module strainability on household water-purifying machine of the embodiment of the present invention one
The flow chart of method；
Fig. 2 is that the structure of the water purifier of a kind of method of recovery rolled membrane module strainability using embodiment one is shown
It is intended to；
Fig. 3 is the structural schematic diagram of film process device in water purifier；
Fig. 4 is a kind of with the side that can restore rolled membrane module strainability on household water-purifying machine of the embodiment of the present invention two
The flow chart of method；
Fig. 5, which is positive, rinses water flow and pollutant stress diagram；
Fig. 6 is that positive and negative joint rinses water flow and pollutant stress diagram；
A kind of structural representation of the water purifier of the method for the recovery rolled membrane module strainability using embodiment two of Fig. 7
Figure.
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
As shown in Figure 1, to be of the invention a kind of with the side that can restore rolled membrane module strainability on household water-purifying machine
The flow chart of method, wherein rolled membrane module is arranged in inside the putamina of film process device of water purifier, putamina be equipped with water inlet,
Water outlet and concentrated water discharge mouth, water inlet are connected to the import of raw water runner inside rolled membrane module, and the outlet of the raw water runner connects
Logical concentrated water discharge mouth, the outlet water outlet of rolled membrane module inside water purification runner, this method comprises the following steps:
Displacement step: after rolled membrane module filters a period of time, the raw water side surface of film may deposit some blocking films
Pollutant, be at this moment passed through water purification or pure water from the water inlet 310 on putamina, by raw water runner inside putamina raw water and
Concentrated water water purification perhaps pure water displacement make the pollutant of the water inside putamina in raw water runner or mineral concentration it is close or
Lower than the pollutant or mineral concentration of raw water.
Soaking step: after displacement, water purification or pure water is made to be continually maintained in the film surface for impregnating raw water side inside putamina, leaching
Bubble duration is no less than 10 minutes.
Pulse lavage step: after immersion, then at least with the raw water runner inside pressure aquapulse formula flushing rolled membrane module
Three times, each pulse lavage duration is no longer than 3 seconds and is not shorter than 1 second, and the stopping duration between two pulse lavages is not shorter than 1
Second.
In the filter process of rolled membrane module, the water inside putamina in raw water runner is in the film table for flowing to filtration
Its water quality will not change before face, that is, be still raw water, then due to partial moisture in the flow process along film surface
Constantly enter water purification runner through filter membrane, some pollutants and/or minerals in water are still protected because that cannot penetrate filter membrane
Stay in the water of raw water runner so that the concentration of pollutant and/or minerals that the water of raw water runner side is wherein trapped by
Gradually rise and become concentrated water, last concentrated water is flowed out through the concentrated water discharge mouth on putamina.This illustrates during the filtration process, inside putamina
Water in raw water runner includes raw water and concentrated water.The raw water and concentrated water in raw water runner are replaced with water purification or pure water,
Purpose seeks to reduce the pollutant and/or mineral concentration of the water in raw water runner.
Replacement process includes water purification or pure water flows into, three parts are discharged in dilution and concentrated water, when replacement process starts
The concentrated water of discharge is dense, and then, with the progress of replacement process, the concentrated water concentration of discharge is lower and lower, finally close
When either lower than the pollutant of raw water or mineral concentration, replacement process terminates.Obviously, the concentration of the concentrated water in raw water runner
It is higher, the bigger consumption in order to reduce water purification or pure water of amount of the water purification perhaps pure water of consumption, it is preferred that this reality
It applies in the method for example, before the displacement step, this method further includes Primary replacement step: rinsing filter with the raw water with pressure
The raw water side of film is rinsed duration and is no longer than 15 seconds.The step can be first by the pollutant or minerals of the water in raw water runner
Concentration reduces, since the value of raw water is lower than water purification or pure water, so, above-mentioned corrective measure is meaningful, has very
Good economic benefit.In addition, with the raw water side itself that the raw water with pressure rinses filter membrane also contributing to that filter membrane raw water will be blocked in
The pollutant of side is removed from the raw water side surface of filter membrane, that is, facilitates the strainability for restoring filter membrane.
On the one hand the raw water side that film is impregnated with water purification or pure water contributes to weaken between blocking substance and film surface
Binding force, when binding force is zero or very little, blocking substance can thoroughly divide with film surface in subsequent pulse lavage
From, with pulse lavage water flow away from raw water runner direction flow, rolled membrane module, the mistake of such film is finally discharged
Filter performance can be restored；On the other hand scale (such as calcium carbonate, carbonic acid that blocking substance is formed if it is calcium ions and magnesium ions
Magnesium), then pure water has certain solvability to calcium carbonate, magnesium carbonate, although not necessarily film surface can be deposited on by all
On cause film to block calcium carbonate, magnesium carbonate all dissolve, but a part can be dissolved certainly, this helps to decrease carbonic acid
Binding force between calcium, magnesium carbonate and film surface, convenient for thoroughly being separated with film surface in subsequent pulse lavage, with pulse
The water flow of flushing is flowed away from the direction of raw water runner, and rolled membrane module, the strainability energy of such film is finally discharged
Access recovery.
Pulsed flushing carries out after dipping, and pulse lavage can generate hydraulic pressure mutation, i.e. generation water hammer effect, to adherency
Or the pollutant for being attached to film surface has stronger tearing and effect of trembling, and is conducive to pollutant and leaves film surface, then
Rolled membrane module is discharged with water flow.
As shown in Fig. 2, a kind of water purifier of the method for the recovery rolled membrane module strainability using embodiment one
Structural schematic diagram, as shown in figure 3, being the structural schematic diagram of film process device.The water purifier includes film process device 3, flushing valve 7, net
Water valve 6, outlet valve 8, first throttle valve 1, second throttle 12, air pressing type water tank 9, the first check valve 5 and second one-way valve
11.Film process device 3 is made of putamina and the rolled membrane module being arranged in inside putamina, and putamina is equipped with water inlet 310, water outlet
342 and concentrated water discharge mouth 341, water inlet 310 is connected to the import of raw water runner inside rolled membrane module, the outlet of the raw water runner
It is connected to concentrated water discharge mouth 341, the outlet water outlet 342 of water purification runner inside rolled membrane module.Water inlet on putamina
Reflux water pipe 4 is equipped between 310 and the intake-outlet of 9 water cavity of air pressing type water tank, reflux water pipe 4 is net equipped with being serially connected
Water valve 6, second throttle 12 and only allow water flow from the intake-outlet of 9 water cavity of air pressing type water tank towards 310 direction of water inlet
First check valve 5 of flowing, water outlet 342 are connected to the import of second one-way valve 11, and the outlet of second one-way valve 11 is calmed the anger
The intake-outlet of 9 water cavity of formula water tank；Concentrated water discharge mouth 341 is respectively communicated with first throttle valve 1 and flushing valve 7, first throttle valve 1
Outlet with flushing valve 7 is vented；Water inlet 310 is also connected to pressure water source 2；The intake-outlet of 9 water cavity of air pressing type water tank also connects
Pass-out water valve 8.
Wherein, rolled membrane module includes core pipe 331 and the diaphragm group 333 that is wrapped in core pipe 331, and diaphragm group 333 includes
Diaphragm, raw water flow-guiding screen and the water purification flow-guiding screen of filtration, raw water flow-guiding screen are in raw water runner, and film is adjoined in two sides
The inlet and outlet of the water entering surface of piece, raw water runner are respectively communicated with the water inlet and concentrated water discharge mouth of rolled membrane module；Water purification flow-guiding screen
In water purification runner, the water surface that goes out of diaphragm, water outlet of the water purification runner through connection rolled membrane module inside core pipe are adjoined in two sides
Mouthful；The outlet end of core pipe 331 and 342 inner wall of water outlet of putamina are sealed by sealing ring 334；The diaphragm of rolled membrane module
333 outside of group is equipped with the sealing ring 332 that can be sealed with putamina inner wall.Air pressing type water tank 9 include water cavity, air cavity and it is flexible every
Film, water cavity shell are equipped with intake-outlet, and air cavity shell is equipped with valve inside, by flexible diaphragm point between water cavity and air cavity
Every.When water cavity is anhydrous, volume is by the pressed gas boil down to zero in air cavity, in the process that the water of water cavity gradually increases
In, the pressure in air cavity and water cavity is increased.Air pressing type water tank both provides a user water purification, also to the water inlet of the putamina
Mouth provides required water purification.Film in rolled membrane module is reverse osmosis membrane or nanofiltration membrane.
Preferably, the water purifier of the present embodiment can also add post active carbon filter core in the inlet ductwork of outlet valve,
Further improve the mouthfeel of purifier water outlet.Preferably, the water purifier of the present embodiment further includes that water pump and hydraulic pressure control electrically lead to
Disconnected high-voltage switch gear, the water pump are arranged on water supply line, water source insufficient for source pressure, can be by opening water pump
To improve hydraulic pressure；The high-voltage switch gear is provided at its inner portion water route and leads directly on the pipeline of air pressing type water tank water cavity, for monitoring
The pressure of the water tank, when the pressure of water tank rises to the release pressure of high-voltage switch gear, illustrating the water tank, water is full,
Electric control system just turns off water source in time and stops water pump operation, and water tank is avoided to cause over-voltage.
After rolled membrane module filtering a period of time in the water purifier, the raw water side surface of film may deposit some blockings
At this moment the pollutant of film can be used following methods and restore strainability:
1. close pressure water source 2, open water purifying valve 6, then the water purification in air pressing type water tank 9 will flow sequentially through water purifying valve 6,
First check valve 5 and second throttle 12 flow into putamina from the water inlet 310 on putamina, will be in raw water runner inside putamina
Raw water and concentrated water are replaced with water purification, keep the pollutant of the water inside putamina in raw water runner or mineral concentration close or low
In the pollutant or mineral concentration of raw water；
2. after displacement, closing water purifying valve 6, so that water purification is continually maintained in the film surface for impregnating raw water side inside putamina, impregnate
Duration is no less than 10 minutes；
3. after impregnating, being then turned on pressure water source 2, and discontinuous opens flushing valve 7, is allowed to generate pulsed hydraulic pressure, with pressure
Power aquapulse formula rinses the raw water runner inside rolled membrane module at least three times, and each pulse lavage duration is no longer than 3 seconds and not
Shorter than 1 second, the stopping duration between two pulse lavages was not shorter than 1 second.
Preferably, it before the raw water and concentrated water inside with water purification or pure water displacement putamina in raw water runner, first connects
Pressure water source 2 and unlatching flushing valve 7, the raw water side of filter membrane is rinsed with the raw water with pressure, is rinsed duration and is no longer than 15 seconds, that is, exists
Pressure water source 2 and flushing valve 7 are closed in 15 second period, this process is actually in the raw water runner of raw water displacement putamina inside
Raw water and concentrated water, the preliminary pollutant or mineral concentration for reducing the water inside putamina in raw water runner, then again with net
Raw water and concentrated water inside water or pure water displacement putamina in raw water runner, further decrease the water inside putamina in raw water runner
Pollutant or mineral concentration.
Embodiment two
As shown in figure 4, for the application another with rolled membrane module strainability can be restored on household water-purifying machine
The flow chart of method, wherein rolled membrane module is arranged in inside the putamina of film process device of water purifier, and putamina is equipped with water inlet
Mouth, water outlet and concentrated water discharge mouth, water inlet are connected to the import of raw water runner inside rolled membrane module, the outlet of the raw water runner
It is connected to concentrated water discharge mouth, the outlet water outlet of water purification runner inside rolled membrane module, this method comprises the following steps:
Replace backwash step: after rolled membrane module filters a period of time, the raw water side surface of film may be deposited
The pollutant for blocking film, is at this moment passed through water purification or pure water from the water inlet 310 on putamina, will be in raw water runner inside putamina
Perhaps pure water displacement connects the pollutant of the water inside putamina in raw water runner or mineral concentration for raw water and concentrated water water purification
Pollutant or mineral concentration close or lower than raw water；Meanwhile the reverse differential pressure born to film is not more than 5m water column
Mode backwashes filter membrane with displacement hydraulic pressure to the water purification runner and raw water runner；
Soaking step: after displacement, water purification or pure water is made to be continually maintained in the film surface for impregnating raw water side inside putamina, leaching
Bubble duration is no less than 10 minutes.
Pulse lavage step: after immersion, then at least with the raw water runner inside pressure aquapulse formula flushing rolled membrane module
Three times, each pulse lavage duration is no longer than 3 seconds and is not shorter than 1 second, and the stopping duration between two pulse lavages is not shorter than 1
Second.
Replacement process in the displacement backwash step, actually with concentration lower than concentrated water water (such as raw water,
Water purification or pure water) filter membrane is just being rinsed, gradually decrease the concentration of the concentrated water in raw water runner.If with water purification or
Film is backwashed with water purification or pure water again while person's pure water is replaced, effect is exactly while carrying out to filter membrane positive and negative
Joint is rinsed.As can be seen that the filter membrane surface portion of raw water flow passage area from Fig. 5 square impact wash water stream and pollutant stress diagram
Divide filter opening to be contaminated object to block, when just rinsing, there is the biggish tangential water flow of flow, also there is flow is lesser to enter only across filter membrane
The water flow of water flow passage, therefore the hydraulic pressure of raw water runner is greater than the hydraulic pressure of water purification runner, this allows for being on the one hand that its tangential water flow has
Help that pollutant is made to remove film surface, the strainability of filter membrane is made to be restored；It on the other hand is raw water runner and water purification runner
Between hydraulic pressure difference, help that pollutant is made closely to be attached to filter membrane surface, prevent the strainability of filter membrane from extensive
It is multiple.Thus, the limitation just rinsed is obvious.Water flow is rinsed from the positive and negative joint of Fig. 6 and pollutant stress diagram can
To find out, positive and negative joint rinse when, have the biggish tangential water flow of flow, also have flow it is lesser from water purification runner pass through filter membrane into
The water flow for entering raw water runner, because the hydraulic pressure of raw water runner is less than the hydraulic pressure of water purification runner, this allows for being on the one hand its tangential water
Stream helps that pollutant is made to remove film surface, and the strainability of filter membrane is made to be restored；It on the other hand is the hydraulic pressure of raw water runner
Lower than water purification runner, this pressure difference similarly facilitates to make the more easily peelable filter membrane surface of pollutant, makes the strainability of filter membrane
It is restored.So positive and negative joint, which is rinsed, can be substantially better than effect just during rinsing to the strainability for restoring film.
On the one hand the raw water side that film is impregnated with water purification or pure water contributes to weaken between blocking substance and film surface
Binding force, when binding force is zero or very little, blocking substance can thoroughly divide with film surface in subsequent pulse lavage
From, with pulse lavage water flow away from raw water runner direction flow, rolled membrane module, the mistake of such film is finally discharged
Filter performance can be restored；On the other hand scale (such as calcium carbonate, carbonic acid that blocking substance is formed if it is calcium ions and magnesium ions
Magnesium), then pure water has certain solvability to calcium carbonate, magnesium carbonate, although not necessarily film surface can be deposited on by all
On cause film to block calcium carbonate, magnesium carbonate all dissolve, but a part can be dissolved certainly, this helps to decrease carbonic acid
Binding force between calcium, magnesium carbonate and film surface, convenient for thoroughly being separated with film surface in subsequent pulse lavage, with pulse
The water flow of flushing is flowed away from the direction of raw water runner, and rolled membrane module, the strainability energy of such film is finally discharged
Access recovery.
Pulsed flushing carries out after dipping, and pulse lavage can generate hydraulic pressure mutation, i.e. generation water hammer effect, to adherency
Or the pollutant for being attached to film surface has stronger tearing and effect of trembling, and is conducive to pollutant and leaves film surface, then
Rolled membrane module is discharged with water flow.
Preferably, in the method for the present embodiment, before the displacement backwash step, the method also includes setting for the first time
It changes step: rinsing the raw water side of filter membrane with the raw water with pressure, rinse duration and be no longer than 15 seconds.The step can be first by raw water stream
Perhaps mineral concentration is reduced since the value of raw water is lower than water purification or pure water the pollutant of water in road, so, on
It is meaningful to state corrective measure, there is good economic benefit.In addition, rinsing the raw water side of filter membrane itself with the raw water with pressure
The pollutant for also contributing to be blocked in filter membrane raw water side is removed from the raw water side surface of filter membrane, that is, facilitates the mistake for restoring filter membrane
Filter performance.
Preferably, in the method for the present embodiment, after completing the soaking step, carry out the pulse lavage step it
Before, the method also includes positive and negative joint rinsing steps: in such a way that the reverse differential pressure that film is born is no more than 5m water column, using water purification
Or pure water presses to the water purification runner and raw water runner, the positive and negative joint carried out no less than 30 seconds to film is rinsed.The step helps
In because impregnate generate pollutant and film surface between binding force or bonding force reduce after pollutant removing film surface or
Further loosening is generated, rolled membrane module is discharged in pollutant convenient for the flushing of subsequent strong pulse.
As shown in fig. 7, a kind of water purifier of the method for the recovery rolled membrane module strainability using embodiment two
Structural schematic diagram, the water purifier include film process device 3, flushing valve 7, water purifying valve 6, outlet valve 8, air pressing type water tank 9, first segment
Flow valve 1 and the first check valve 5.Film process device 3 is made of putamina and the rolled membrane module being arranged in inside putamina, and putamina is equipped with
Water inlet 310, water outlet 342 and concentrated water discharge mouth 341, water inlet 310 are connected to the import of raw water runner inside rolled membrane module,
The outlet concentrated water discharge mouth 341 of the raw water runner, the outlet water outlet 342 of rolled membrane module inside water purification runner.
Reflux water pipe 4 is equipped between the intake-outlet and the water inlet 310 of 9 water cavity of air pressing type water tank, reflux water pipe 4 is equipped with
The water purifying valve 6 being serially connected and permission water flow are from the intake-outlet of 9 water cavity of air pressing type water tank towards 310 side of water inlet
To the first check valve 5 of flowing, the outlet of the first check valve 5 leads directly to the water inlet 310；The connection of water outlet 342 first
The import of check valve 5；The concentrated water discharge mouth 341 is respectively communicated with first throttle valve 1 and flushing valve 7, first throttle valve 1 and flushing
The outlet of valve 7 is vented；The water inlet 310 is also connected to water source 2；The intake-outlet of 9 water cavity of air pressing type water tank is also connected to water outlet
Valve 8.Film in rolled membrane module is reverse osmosis membrane or nanofiltration membrane.
Preferably, the cracking pressure range of first check valve 5 is set to 0.5~5m water column.Preferably, the present embodiment
Water purifier can also add post active carbon filter core in the inlet ductwork of outlet valve, further improve the mouth of purifier water outlet
Sense.Preferably, the water purifier of the present embodiment further includes the high-voltage switch gear of water pump and the electrical on-off of hydraulic pressure control, the water pump setting
On water supply line, water source insufficient for source pressure can improve hydraulic pressure by opening water pump；The high-voltage switch gear is set
It sets water route inside it to lead directly on the pipeline of air pressing type water tank water cavity, for monitoring the pressure of the water tank, when water tank
When pressure rises to the release pressure of high-voltage switch gear, illustrating the water tank, water is full, and electric control system just turns off water in time
Source and stopping water pump operation, avoid water tank from causing over-voltage.
After rolled membrane module filtering a period of time in the water purifier, the raw water side surface of film may deposit some blockings
At this moment the pollutant of film can be used following methods and restore strainability:
1. turning off pressure water source 2, water purifying valve 6 is opened, then the water purification in air pressing type water tank 9 will divide after passing through water purifying valve 6
Raw water runner inside putamina is not flowed to through water inlet 310 of first check valve 5 from putamina and from the water outlet 342 on putamina
Flow to the water purification runner inside putamina, by raw water runner inside putamina raw water and concentrated water replaced with water purification, make inside putamina
The pollutant or mineral concentration of water in raw water runner are near or below the pollutant or mineral concentration of raw water, together
When, since water flows through pressure drop can be generated after the first check valve 5 (pressure drop is set to 0.5~5m water column, is exactly the unlatching pressure of check valve
Power, if pressure drop is lower than the cracking pressure of check valve, check valve will not be opened), the pressure of water purification can be higher than original in water purification runner
Raw water pressure in water flow passage, so that filter membrane bears buffer brake, this process is actually to carry out positive and negative joint to filter membrane to rinse；
2. then, closing water purifying valve 6, water purification is made to be continually maintained in the film table for impregnating raw water side or concentrated water side inside putamina
Face is impregnated duration and is no less than 10 minutes；
3. after impregnating, being then turned on pressure water source 2 and discontinuous opening flushing valve 7, be allowed to generate pulsed water flow, with pressure
Power aquapulse formula rinses the raw water runner inside rolled membrane module at least three times, and each pulse lavage duration is no longer than 3 seconds and not
Shorter than 1 second, the stopping duration between two pulse lavages was not shorter than 1 second.
Preferably, before the raw water and concentrated water inside with water purification displacement putamina in raw water runner, or with water purification pair
Before filter membrane carries out positive and negative joint flushing, first cut-in pressure water source 2 and unlatching flushing valve 7 rinse filter membrane with the raw water with pressure
Raw water side, rinse duration and be no longer than 15 seconds, i.e., close pressure water source 2 and flushing valve 7 within 15 second period, this process is actually
It is both the raw water and concentrated water replaced with raw water in the raw water runner of putamina inside, and rinses filter with the raw water big flow with pressure
The raw water side of film.Then again with the raw water and concentrated water in raw water runner inside the water purification displacement putamina in air pressing type water tank water cavity
Or positive and negative joint is carried out to filter membrane and is rinsed.
Preferably, after dipping and before carrying out pulse lavage with the raw water with pressure, water purifying valve 6 is first opened, simultaneously
Pressure water source 2 and flushing valve 7 remain off, and are just being backwashed with water purification to filter membrane, and duration is no less than 30 seconds, then
The pulse lavage is carried out again.
It uses mark-on water as raw water using the water purifier in embodiment one and embodiment two to do experiment, the rolled membrane module
The reverse osmosis membrane assembly of 50GPD, the water quality parameter of mark-on water are as follows: total dissolved solid 500mg/L, total hardness 450mg/L,
Basicity is 160mg/L, and after accumulative output water purification 2600L, consumption raw water total amount is 4127L, and salt rejection rate is from initial value 90.9%
94.6% is risen to, net water flux drops to 170mL/min from initial value 195mL/min, and water purification producing water ratio is 63%, is higher than one
The 60% of grade water effect requirement, the stopping state of film is not serious, is much higher than in industry for the one of the reverse osmosis membrane assembly of 50GPD
As require (i.e. after accumulative output water purification 2000L, net water flux cannot be less than 130mL/min).
Test proves: method of the invention and the water purifier using this method can effectively save water resource, and not
Using the service life of expendable film as cost, significant economic benefit and social benefit can be generated after volume production.
To sum up, a kind of method that can restore rolled membrane module strainability on household water-purifying machine provided by the invention,
The film for being not only suitable for blocking due to containing more colloid etc. in water and generating the pollutant of SDI is filtered performance recovery, also fits
For because in water calcium ions and magnesium ions concentration it is higher due to that film surface deposits calcium carbonate, magnesium carbonate and the film blocked are filtered performance is extensive
It is multiple.Under the technical support being not easy to plug with filter membrane, concentrated water drainage and washing water quantity of the filter membrane in filtering are relative to obtaining
The ratio of the water purification amount obtained can decline, that is, can be improved water purification producing water ratio or water effect.
It is also had the advantage that using the household water-purifying machine of method provided by the invention
1. water-saving result is significant, and not using the service life of expendable film as cost.
2. can either adapt to also can adapt to the raw water of the more a height of stifled film main cause of SDI polluter content in water
With the raw water of the more a height of stifled film main cause of hardness components in water, additionally it is possible to it is equal to adapt to SDI polluter and hardness components in water
Raw water that is higher and causing stifled film, i.e., it is fine to the adaptability of water quality.
3. manufacturing cost is lower, it is easy to promote and apply.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (12)
1. a kind of method that can restore rolled membrane module strainability on household water-purifying machine, the rolled membrane module setting exists
Inside the putamina of film process device, water inlet inside the rolled membrane module on putamina described in the inlet communication of raw water runner, institute
The concentrated water discharge mouth on putamina described in the outlet of raw water runner is stated, the outlet of water purification runner connects inside the rolled membrane module
Lead to the water outlet on the putamina, which is characterized in that described method includes following steps:
Displacement step: the raw water and concentrated water in the raw water runner are replaced with displacement water, reduces the water in the raw water runner
Pollutant or mineral concentration；The displacement water is water purification or pure water；
Soaking step: after displacement, the film surface of raw water side inside the putamina is changed water and soaked with described set；
Pulse lavage step: after immersion, the raw water runner is rinsed with pulsed water flow.
2. the method according to claim 1, wherein the method also includes first before the displacement step
Secondary displacement step: rinsing the raw water side of the film of the rolled membrane module with the raw water with pressure, tentatively reduces the raw water runner
In water pollutant or mineral concentration.
3. the method according to claim 1, wherein the immersion duration of the soaking step is no less than 10 minutes.
4. the method according to claim 1, wherein washing time is no less than three in the pulse lavage step
Secondary, each pulse lavage duration is no longer than 3 seconds and is not shorter than 1 second, and the stopping duration between two pulse lavages is not shorter than 1 second.
5. according to the method described in claim 2, it is characterized in that, raw water rinses the rolled film in the Primary replacement step
The raw water side duration of the film of component is no longer than 15 seconds.
6. a kind of method that can restore rolled membrane module strainability on household water-purifying machine, the rolled membrane module setting exists
Inside the putamina of film process device, water inlet inside the rolled membrane module on putamina described in the inlet communication of raw water runner, institute
The concentrated water discharge mouth on putamina described in the outlet of raw water runner is stated, the outlet of water purification runner connects inside the rolled membrane module
Lead to the water outlet on the putamina, which is characterized in that described method includes following steps:
Displacement backwash step: the raw water and concentrated water in the raw water runner are replaced with displacement water, is reduced in the raw water runner
Water pollutant or mineral concentration；Simultaneously in such a way that the reverse differential pressure that film is born is no more than 5m water column, with displacement water
The water purification runner and raw water runner are pressed to, film is backwashed；The displacement water is water purification or pure water；
Soaking step: after displacement, the film surface of raw water side inside the putamina is changed water and soaked with described set；
Pulse lavage step: after immersion, the raw water runner is rinsed with pulsed water flow.
7. according to the method described in claim 6, it is characterized in that, the method is also before the displacement backwash step
Including Primary replacement step: rinsing the raw water side of the film of the rolled membrane module with the raw water with pressure, tentatively reduce the original
The pollutant or mineral concentration of water in water flow passage.
8. according to the method described in claim 6, it is characterized in that, carrying out the pulse after completing the soaking step
Before rinsing step, the method also includes:
Positive and negative joint rinsing step: by reverse differential pressure that film is born no more than in a manner of 5m water column, with displacement hydraulic pressure to described net
Water flow passage and raw water runner, the positive and negative joint for be not shorter than 30 seconds to film are rinsed.
9. according to the method described in claim 6, it is characterized in that, the immersion duration of the soaking step is not shorter than 10 minutes.
10. according to the method described in claim 6, it is characterized in that, the washing time of the pulse lavage step is no less than three
Secondary, each pulse lavage duration is no longer than 3 seconds and is not shorter than 1 second, and the stopping duration between two pulse lavages is not shorter than 1 second.
11. the method according to the description of claim 7 is characterized in that raw water rinses the rolling in the Primary replacement step
The raw water side duration of the film of membrane module is no longer than 15 seconds.
12. -11 any method according to claim 1, which is characterized in that the film in the rolled membrane module is reverse osmosis
Film or nanofiltration membrane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811043191.4A CN109078499A (en) | 2018-09-07 | 2018-09-07 | A method of with rolled membrane module strainability can be restored on household water-purifying machine |
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| CN201811043191.4A CN109078499A (en) | 2018-09-07 | 2018-09-07 | A method of with rolled membrane module strainability can be restored on household water-purifying machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569306A (en) * | 2019-01-23 | 2019-04-05 | 珠海格力电器股份有限公司 | Reverse osmosis membrane flushing control method and reverse osmosis membrane flushing system |
| CN110255738A (en) * | 2019-06-26 | 2019-09-20 | 浙江艾波特环保科技股份有限公司 | A kind of water purifier and method using pure water replacement concentrated water |
| CN116078163A (en) * | 2023-04-11 | 2023-05-09 | 东莞市华清环保工程有限公司 | Ultrafiltration membrane assembly |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001008789A2 (en) * | 1999-07-29 | 2001-02-08 | Zenon Environmental Inc. | Maintenance cleaning for membranes |
| JP2009233591A (en) * | 2008-03-27 | 2009-10-15 | Toray Ind Inc | Water purifier |
| CN105344250A (en) * | 2015-12-04 | 2016-02-24 | 江苏沁尔康环境电器有限公司 | Spiral-wound membrane component and filter element employing same |
| CN105502580A (en) * | 2016-01-12 | 2016-04-20 | 江苏沁尔康环境电器有限公司 | Water purifier |
| CN105645615A (en) * | 2014-12-05 | 2016-06-08 | 蒋志远 | Water-purification backwashing-type three-water-quality reverse-osmosis water purifier can be washed with chemicals and gas |
| CN105903355A (en) * | 2016-06-06 | 2016-08-31 | 上海知勉环境技术有限公司 | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system |
| CN106268331A (en) * | 2016-09-23 | 2017-01-04 | 珠海格力电器股份有限公司 | Water purifier and ultrafiltration membrane component thereof |
| CN106348395A (en) * | 2016-10-17 | 2017-01-25 | 珠海格力电器股份有限公司 | Water purifier system and control method for controlling same |
| CN108217844A (en) * | 2018-03-27 | 2018-06-29 | 蒋志远 | A kind of water purification machine is positive and negative to rinse membranous system and control method |
-
2018
- 2018-09-07 CN CN201811043191.4A patent/CN109078499A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001008789A2 (en) * | 1999-07-29 | 2001-02-08 | Zenon Environmental Inc. | Maintenance cleaning for membranes |
| JP2009233591A (en) * | 2008-03-27 | 2009-10-15 | Toray Ind Inc | Water purifier |
| CN105645615A (en) * | 2014-12-05 | 2016-06-08 | 蒋志远 | Water-purification backwashing-type three-water-quality reverse-osmosis water purifier can be washed with chemicals and gas |
| CN105344250A (en) * | 2015-12-04 | 2016-02-24 | 江苏沁尔康环境电器有限公司 | Spiral-wound membrane component and filter element employing same |
| CN105502580A (en) * | 2016-01-12 | 2016-04-20 | 江苏沁尔康环境电器有限公司 | Water purifier |
| CN105903355A (en) * | 2016-06-06 | 2016-08-31 | 上海知勉环境技术有限公司 | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system |
| CN106268331A (en) * | 2016-09-23 | 2017-01-04 | 珠海格力电器股份有限公司 | Water purifier and ultrafiltration membrane component thereof |
| CN106348395A (en) * | 2016-10-17 | 2017-01-25 | 珠海格力电器股份有限公司 | Water purifier system and control method for controlling same |
| CN108217844A (en) * | 2018-03-27 | 2018-06-29 | 蒋志远 | A kind of water purification machine is positive and negative to rinse membranous system and control method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569306A (en) * | 2019-01-23 | 2019-04-05 | 珠海格力电器股份有限公司 | Reverse osmosis membrane flushing control method and reverse osmosis membrane flushing system |
| CN110255738A (en) * | 2019-06-26 | 2019-09-20 | 浙江艾波特环保科技股份有限公司 | A kind of water purifier and method using pure water replacement concentrated water |
| CN116078163A (en) * | 2023-04-11 | 2023-05-09 | 东莞市华清环保工程有限公司 | Ultrafiltration membrane assembly |
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Application publication date: 20181225 |