CN102908899A - Reverse osmosis water purification system - Google Patents
Reverse osmosis water purification system Download PDFInfo
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- CN102908899A CN102908899A CN2012102519216A CN201210251921A CN102908899A CN 102908899 A CN102908899 A CN 102908899A CN 2012102519216 A CN2012102519216 A CN 2012102519216A CN 201210251921 A CN201210251921 A CN 201210251921A CN 102908899 A CN102908899 A CN 102908899A
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- water
- pure water
- reverse osmosis
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 225
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 90
- 238000000746 purification Methods 0.000 title abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 58
- 239000008213 purified water Substances 0.000 claims description 24
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/06—Specific process operations in the permeate stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/18—Specific valves
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a reverse osmosis water purification system which can prolong the service life of a reverse osmosis membrane element. The reverse osmosis water purification system comprises the reverse osmosis membrane element, a pure water suck-back tank and a pure water tank, wherein the reverse osmosis membrane element is used for filtering water by utilizing a reverse osmosis principle; the pure water suck-back tank and the pure water tank are connected by an overflow port; a pure water inlet of the pure water suck-back tank is communicated with a pure water outlet of the reverse osmosis membrane element by a float ball check valve; the float ball check valve is used for closing the pure water inlet when water in the pure water suck-back tank reaches a low water level; and the pure water tank is provided with a pure water output port. When the system stops working, the pure water in the pure water suck-back tank enters the reverse osmosis membrane element, scales are difficult to form and the pure water can take a cleaning effect on scale deposit and other pollutants in the reverse osmosis membrane element, so that the reverse osmosis water purification system is helpful to prolong the service life of the reverse osmosis membrane element.
Description
Technical field
The present invention relates to water technology, relate to especially a kind of reverse osmosis purified water system.
Background technology
The common application form of reverse osmosis technology in water treatment is to make reverse-osmosis membrane element, reverse-osmosis membrane element generally has a columniform pressure vessel as housing, its inside has one with the central tube in a plurality of holes and twists in alternately laminated multilayer reverse osmosis membrane on the central tube and the material such as filter, utilizes principle of reverse osmosis to realize water purification.
In use, if the reverse osmosis membrane in the reverse-osmosis membrane element becomes dry, can affect its result of use even cause reverse osmosis membrane to lose efficacy, so the maintenance mode commonly used for reverse-osmosis membrane element is when reverse-osmosis membrane element is in off working state at present, make and be full of running water in the housing, thereby prevent that reverse osmosis membrane from becoming dry, in order to keep the performance of reverse-osmosis membrane element.In purification process, reverse osmosis membrane can easily form on the surface the dirty stifled and inorganic scaling of impurity etc., thereby has affected the service life of reverse-osmosis membrane element.
Summary of the invention
In view of this, the invention provides a kind of reverse osmosis purified water system, the service life that can improve reverse-osmosis membrane element.
For achieving the above object, the invention provides following technical scheme:
A kind of reverse osmosis purified water system, comprise the reverse-osmosis membrane element that utilizes principle of reverse osmosis that water is filtered, described reverse osmosis purified water system also comprises pure water resorption water tank and pure water water tank, wherein: described pure water resorption water tank be connected the pure water water tank and connect by overfall; The pure water entrance of described pure water resorption water tank is communicated with the pure water port of export of described reverse-osmosis membrane element by floating ball one-way valve, and described floating ball one-way valve is used for closing described pure water entrance when the water in the described pure water resorption water tank arrives low water level; Described pure water water tank has the pure water delivery outlet.
Alternatively, the volume of described pure water resorption water tank is greater than the water capacity in the described reverse-osmosis membrane element.
Alternatively, also comprise a post-filter, between the pure water port of export of described floating ball one-way valve and described reverse-osmosis membrane element.
Alternatively, the filter core of described post-filter is active carbon filter core or melt-blown filter.
Alternatively, also comprise water pump, entering water electromagnetic valve and controller; Have the high water level switch in the described pure water water tank, and: the former water inlet of described reverse-osmosis membrane element is connected with described entering water electromagnetic valve via described water pump; A controlled quentity controlled variable output of described controller is connected with the controlled end of described entering water electromagnetic valve, another controlled quentity controlled variable output is connected with the controlled end of described water pump, a digital quantity receiving terminal is connected with described high water level switch, described controller is used for after the signal that receives described high water level switch transmission, and output is used for closing the controlled quentity controlled variable of described entering water electromagnetic valve.
Alternatively, also have low-water level switch in the described pure water water tank, this low-water level switch is connected with another digital quantity receiving terminal of described controller.
Alternatively, also comprise the first filter, the second filter and the 3rd filter of successively series connection, wherein, the input port of described the first filter is as the running water input, and the delivery outlet of described the 3rd filter is connected with described entering water electromagnetic valve; Described the first filter adopts melt-blown filter; Described the second filter adopts the granular activated carbon filter core; Described the 3rd filter adopts melt-blown filter.
Alternatively, the pipeline between described the first filter and described the second filter has a low tension switch, and this low tension switch is connected with another digital quantity receiving terminal of described controller.
According to technical scheme of the present invention, be provided with the pure water resorption water tank that is communicated with the pure water water tank, when reverse-osmosis membrane element quits work, by the pure water resorption, osmosis occurs, the surface contaminants of reverse-osmosis membrane element is dissolved, washes and discharges from wastewater outlet, prolong the reverse-osmosis membrane element effect in service life thereby played.
Description of drawings
Accompanying drawing is used for understanding the present invention better, does not consist of improper restriction of the present invention.Wherein:
Fig. 1 is the schematic diagram according to the chief component of the reverse osmosis purified water system of the embodiment of the invention;
Fig. 2 is the schematic diagram according to a preferred structure of the reverse osmosis purified water system of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing example embodiment of the present invention is explained, to help understanding, they should be thought it only is exemplary comprising the various details of the embodiment of the invention.Therefore, those of ordinary skills will be appreciated that, can make various changes and modification to the embodiments described herein, and can not deviate from scope and spirit of the present invention.Equally, for clarity and conciseness, omitted the description to known function and structure in the following description.
Fig. 1 is the schematic diagram according to the chief component of the reverse osmosis purified water system of the embodiment of the invention.As shown in Figure 1, in embodiments of the present invention, the reverse osmosis purified water system mainly comprises reverse-osmosis membrane element 11, pure water resorption water tank 12, pure water water tank 13, and wherein pure water resorption water tank 12 is connected with the pure water water tank by overfall 14 connections.There is a floating ball one-way valve 16 at pure water entrance 121 places of pure water resorption water tank, and pure water entrance 121 is communicated with the pure water port of export 111 of reverse-osmosis membrane element 11 by this floating ball one-way valve 16.Floating ball one-way valve 16 is used for closing pure water entrance 121 when the water pure water resorption water tank in arrives low water level, and specifically, during water level decline, the ball float 161 in the floating ball one-way valve is thereupon decline also, and water level drops to when minimum ball float 161 and blocks pure water entrance 121.
In addition, as shown in Figure 1, wastewater outlet 113 places of reverse-osmosis membrane element are connected with a waste water proportioner 17, the ratio that is used for regulating pure water and waste water.Pure water in the pure water water tank 13 can outwards be supplied, and for example connects a tap 18 at pure water delivery outlet 131 places of pure water water tank 13 by pipeline.
Below make an explanation for the course of work of the reverse osmosis purified water system of the present embodiment.In the water process processed, former water enters reverse-osmosis membrane element 11 by the former water inlet 112 of reverse-osmosis membrane element 11, through obtaining pure water after the reverse-osmosis treated, pure water enters pure water resorption water tank 12 from pure water outlet 111, after water level in the pure water resorption water tank 12 arrives overfall 14, pure water enters pure water water tank 13 by overfall 14, and realizing provides pure water to the outside.
Can find out the reverse osmosis purified water system of the present embodiment when providing pure water to the outside, the water level of pure water resorption water tank 12 remains on the position of overfall 14.When the reverse osmosis purified water system quits work, under pressure differential between pure water resorption water tank 12 and reverse-osmosis membrane element 11 and the effect of the permeable pressure head in the reverse-osmosis membrane element 11, pure water in the pure water resorption water tank 12 enters from reverse-osmosis membrane element 11 via pure water outlet 111, and in reverse-osmosis membrane element 11, be penetrated into former water side from the pure water side, discharge from the wastewater outlet 113 of reverse-osmosis membrane element 11 at last, in this process, the water of reverse-osmosis membrane element 11 inner former water sides, its salt content will reduce gradually, until consistent with pure water salt content in the pure water tank.Like this, the water of this low saline salinity of former water side itself is less scaling, helps to prolong the service life of reverse-osmosis membrane element.
And, the water of the low saline salinity of the former water side in the reverse-osmosis membrane element 11 can also play dissolution to the inorganic salts fouling that the reverse osmosis membrane surface produces, further prevent the membrane component fouling, simultaneously can clean other pollutant on membrane component surface, thereby help further to prolong the service life of reverse-osmosis membrane element.
Can find out for pure water resorption water tank 12 amount of the water that its volume preferably can hold greater than reverse-osmosis membrane element 11.As previously mentioned, when the reverse osmosis purified water system quit work, the water in the pure water resorption water tank 12 entered reverse-osmosis membrane element 11 and discharges from wastewater outlet 113.In this process, the liquid level of pure water resorption water tank 12 descends, until by floating ball one-way valve 16 pure water entrance 121 is closed.This moment, the water in the reverse-osmosis membrane element 11 also stopped to discharge owing to the effect of external pressure.Can find out if the volume of pure water resorption water tank 12 is too little, then the water of the low saline salinity in the reverse-osmosis membrane element 11 is still not many when pure water entrance 121 is closed, might reverse osmosis membrane partly be become dry, also might affect to the dissolving of the inorganic salts fouling on the surface of reverse osmosis membrane and to the effect of the cleaning of other pollutants.
Fig. 2 is the schematic diagram according to a preferred structure of the reverse osmosis purified water system of the embodiment of the invention.As shown in Figure 2, in order to improve clean-up effect, also have a post-filter 21 between the pure water port of export 111 of floating ball one-way valve 16 and reverse-osmosis membrane element 11, its filter core can adopt active carbon filter core or melt-blown filter (PP filter core).
Former water inlet place at reverse-osmosis membrane element 11 can connect a water pump 22, can connect an entering water electromagnetic valve at water pump 22 opposite sides.A high water level switch 24 is arranged in pure water water tank 13.This reverse osmosis purified water system also has a controller (not shown) in addition, can adopt various microprocessors to realize.
Two controlled quentity controlled variable outputs of controller are connected with the controlled end that water pump 22 is connected with entering water electromagnetic valve respectively, thus the start and stop of control water pump 22 and the break-make of entering water electromagnetic valve 23.A digital quantity receiving terminal of controller is connected with high water level switch 24, like this when the water level of pure water tank 13 reaches the altitude measurement of high water level switch 24, high water level switch 24 sends signal, and controller cuts out entering water electromagnetic valve after receiving, and water pump 22 also cuts out.This moment, system stopped water purification work, and outwards the pure water of supply is pure water tank 13 interior remaining water.
Also have a low-water level switch 25 that is connected with the digital quantity receiving terminal of controller in pure water water tank 13, its altitude measurement will be lower than the altitude measurement of high water level switch 24.Stop water purification work in system, and when pure water tank 13 was still outwards supplied pure water, its water level continued to reduce, when water level is lower than the altitude measurement of low-water level switch 25, low-water level switch 25 is to the controller transmitted signal, and controller is received rear unlatching water pump 22 and opened entering water electromagnetic valve 23.
Running water can be by water tank 20 supplies, successively by the first filter 26, the second filter 27 and the 3rd filter 28.The delivery outlet of the 3rd filter 28 is connected with entering water electromagnetic valve 23.The first filter 26 can adopt the PP filter core of 5 μ m.The second filter 27 can adopt 85C granular activated carbon filter core.The 3rd filter 28 can adopt the PP filter core of 1 μ m.Certainly, the various filter cores here can be selected according to actual conditions other specification.
Can fill a low tension switch 29 on 27 the pipeline of the first filter 26 and the second filter, this low tension switch 29 is connected with another digital quantity receiving terminal of controller.When the running water stop supplies, low tension switch 29 detects hydraulic pressure to be reduced, and then gives the controller transmitted signal, and controller after receiving this signal stops water pump 22, and closes entering water electromagnetic valve 23.
The above-mentioned specific embodiment does not consist of limiting the scope of the invention.Those skilled in the art should be understood that, depend on designing requirement and other factors, and various modifications, combination, sub-portfolio and alternative can occur.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the protection domain of the present invention.
Claims (8)
1. a reverse osmosis purified water system comprises and utilizes principle of reverse osmosis to the reverse-osmosis membrane element that water filters, and it is characterized in that, described reverse osmosis purified water system also comprises pure water resorption water tank and pure water water tank, wherein:
Described pure water resorption water tank be connected the pure water water tank and connect by overfall;
The pure water entrance of described pure water resorption water tank is communicated with the pure water port of export of described reverse-osmosis membrane element by floating ball one-way valve, and described floating ball one-way valve is used for closing described pure water entrance when the water in the described pure water resorption water tank arrives low water level;
Described pure water water tank has the pure water delivery outlet.
2. reverse osmosis purified water according to claim 1 system is characterized in that, the volume of described pure water resorption water tank is greater than the water capacity in the described reverse-osmosis membrane element.
3. reverse osmosis purified water according to claim 1 and 2 system is characterized in that, also comprises a post-filter, between the pure water port of export of described floating ball one-way valve and described reverse-osmosis membrane element.
4. reverse osmosis purified water according to claim 3 system is characterized in that, the filter core of described post-filter is active carbon filter core or melt-blown filter.
5. reverse osmosis purified water according to claim 1 and 2 system is characterized in that, also comprises water pump, entering water electromagnetic valve and controller; Have the high water level switch in the described pure water water tank, and:
The former water inlet of described reverse-osmosis membrane element is connected with described entering water electromagnetic valve via described water pump;
A controlled quentity controlled variable output of described controller is connected with the controlled end of described entering water electromagnetic valve, another controlled quentity controlled variable output is connected with the controlled end of described water pump, a digital quantity receiving terminal is connected with described high water level switch, described controller is used for after the signal that receives described high water level switch transmission, and output is used for closing the controlled quentity controlled variable of described entering water electromagnetic valve.
6. reverse osmosis purified water according to claim 5 system is characterized in that also having low-water level switch in the described pure water water tank, and this low-water level switch is connected with another digital quantity receiving terminal of described controller.
7. reverse osmosis purified water according to claim 5 system is characterized in that, also comprises the first filter, the second filter and the 3rd filter of successively series connection, wherein,
The input port of described the first filter is as the running water input, and the delivery outlet of described the 3rd filter is connected with described entering water electromagnetic valve;
Described the first filter adopts melt-blown filter;
Described the second filter adopts the granular activated carbon filter core;
Described the 3rd filter adopts melt-blown filter.
8. reverse osmosis purified water according to claim 7 system is characterized in that, the pipeline between described the first filter and described the second filter has a low tension switch, and this low tension switch is connected with another digital quantity receiving terminal of described controller.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251921.6A CN102908899B (en) | 2012-07-20 | 2012-07-20 | Reverse osmosis water purification system |
| PCT/CN2013/079718 WO2014012520A1 (en) | 2012-07-20 | 2013-07-19 | Reverse osmosis water purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251921.6A CN102908899B (en) | 2012-07-20 | 2012-07-20 | Reverse osmosis water purification system |
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| CN102908899A true CN102908899A (en) | 2013-02-06 |
| CN102908899B CN102908899B (en) | 2014-09-17 |
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| CN201210251921.6A Active CN102908899B (en) | 2012-07-20 | 2012-07-20 | Reverse osmosis water purification system |
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| CN (1) | CN102908899B (en) |
| WO (1) | WO2014012520A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014012520A1 (en) * | 2012-07-20 | 2014-01-23 | 艾欧史密斯（上海）水处理产品有限公司 | Reverse osmosis water purification system |
| CN106345306A (en) * | 2016-10-24 | 2017-01-25 | 艾欧史密斯(中国)热水器有限公司 | Control method of water purifier |
| CN106698593A (en) * | 2016-09-13 | 2017-05-24 | 龙吉林 | Method for refreshing water of water tank of water purifier |
| CN108467086A (en) * | 2017-02-23 | 2018-08-31 | 青岛经济技术开发区海尔热水器有限公司 | Novel water purification system |
| CN108467087A (en) * | 2017-02-23 | 2018-08-31 | 青岛经济技术开发区海尔热水器有限公司 | Water purification system |
| CN108654392A (en) * | 2017-03-30 | 2018-10-16 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse-osmosis membrane element and water purifier |
| CN112607887A (en) * | 2020-12-11 | 2021-04-06 | 毕宝艺 | Water purification system based on forward osmosis |
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| CN108554180A (en) * | 2018-04-25 | 2018-09-21 | 张家港市金马星机械制造有限公司 | Increase the system in reverse osmosis membrane service life |
| CN110282702A (en) * | 2019-08-05 | 2019-09-27 | 梁晶 | A kind of long-life reverse osmosis filter core water purification system |
| CN113117526A (en) * | 2019-12-31 | 2021-07-16 | 浙江绍兴苏泊尔生活电器有限公司 | Combined filter element assembly and water purification system with same |
| CN113401975A (en) * | 2021-07-21 | 2021-09-17 | 阜宁协鑫光伏科技有限公司 | Equipment water treatment system |
| CN113526704A (en) * | 2021-07-31 | 2021-10-22 | 青岛环速科技有限公司 | Reverse osmosis water purification system |
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| JP2012000548A (en) * | 2010-06-15 | 2012-01-05 | Daicen Membrane Systems Ltd | Purified water manufacturing apparatus and method of using the same |
| CN102557287A (en) * | 2012-02-29 | 2012-07-11 | 东莞市品翔饮水设备有限公司 | Reverse osmosis anion direct drinking machine |
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| CN108654392A (en) * | 2017-03-30 | 2018-10-16 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse-osmosis membrane element and water purifier |
| CN108654392B (en) * | 2017-03-30 | 2023-09-01 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse osmosis membrane element and water purifier |
| CN112607887A (en) * | 2020-12-11 | 2021-04-06 | 毕宝艺 | Water purification system based on forward osmosis |
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| WO2014012520A1 (en) | 2014-01-23 |
| CN102908899B (en) | 2014-09-17 |
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Address after: 211200 No. 9 Zhongxing West Road, Lishui Economic Development Zone, Jiangsu, Nanjing Patentee after: A.O. SMITH (NANJING) WATER TREATMENT PRODUCTS CO., LTD. Address before: 201101, A building, room 58, Sun Jia 1203, Shanghai, Minhang District Patentee before: A. O. Smith (Shanghai) Water Treatment Products Co., Ltd. |