CN106673240B - Quality-dividing water purifying system - Google Patents
Quality-dividing water purifying system Download PDFInfo
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- CN106673240B CN106673240B CN201510755980.0A CN201510755980A CN106673240B CN 106673240 B CN106673240 B CN 106673240B CN 201510755980 A CN201510755980 A CN 201510755980A CN 106673240 B CN106673240 B CN 106673240B
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Abstract
The invention provides a quality-divided water purification system, which comprises: the pretreatment unit is provided with a pretreatment inlet and a pretreatment outlet; the purification unit is provided with a water inlet, a drinking water outlet and a concentrated water outlet, and the water inlet is connected with the pre-treatment outlet; the drinking water storage unit is provided with a drinking water inlet and a drinking water outlet, the drinking water inlet is connected with the drinking water outlet, and the drinking water outlet is connected with a water nozzle; the concentrated water storage unit is provided with a concentrated water inlet and a concentrated water outlet, and the concentrated water inlet is connected with the concentrated water outlet; and the water using device is connected with the concentrated water outlet. According to the quality-classifying water purifying system provided by the embodiment of the invention, the concentrated water generated by the purifying unit is collected in the concentrated water storage unit, and the concentrated water treatment unit is connected with the water using equipment, so that the concentrated water is discharged after being used at least once, and the problem of direct discharge of the concentrated water is effectively solved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a quality-dividing water purification system.
Background
Along with the improvement of living standard, the quality requirements of consumers on the drinking water and the cleaning water are also improved, and in order to meet the requirements of consumers on the quality water, the quality-divided water purification system is developed, and the drinking water purification adopts a reverse osmosis or nanofiltration technology.
The existing reverse osmosis membrane water purifier can filter out almost all impurities, heavy metals, bacteria, viruses and the like harmful to human bodies in water, so that the existing reverse osmosis membrane water purifier is a relatively common method for preparing the purified water. The reverse osmosis membrane water purifier generates a large amount of concentrated water in the process of preparing purified water, and generally generates about 3 parts of concentrated water when 1 part of purified water is prepared.
The existing nanofiltration membrane water purifier can remove substances harmful to human bodies such as bacteria and viruses in water and can retain partial ions in the water, the nanofiltration membrane water purifier can also produce a certain proportion of concentrated water in the process of preparing purified water, and generally 1-2 parts of concentrated water can be produced when preparing one part of purified water.
In the related art, concentrated water is generally directly discharged, which is a great waste for increasingly tense water resources, and also restricts the popularization and development of reverse osmosis membrane and nanofiltration membrane water purifiers to a certain extent.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, an object of the present invention is to provide a quality-divided water purification system that can utilize water to the maximum extent.
According to an embodiment of the invention, a quality-divided water purification system comprises: the pretreatment unit is provided with a pretreatment inlet and a pretreatment outlet; the purification unit is provided with a water inlet, a drinking water outlet and a concentrated water outlet, and the water inlet is connected with the pre-treatment outlet; the drinking water storage unit is provided with a drinking water inlet and a drinking water outlet, the drinking water inlet is connected with the drinking water outlet, and the drinking water outlet is connected with a water nozzle; the concentrated water storage unit is provided with a concentrated water inlet and a concentrated water outlet, and the concentrated water inlet is connected with the concentrated water outlet; and the water using device is connected with the concentrated water outlet.
According to the quality-classifying water purifying system provided by the embodiment of the invention, the concentrated water generated by the purifying unit is collected in the concentrated water storage unit, and the concentrated water treatment unit is connected with the water using equipment, so that the concentrated water is discharged after being used at least once, and the problem of direct discharge of the concentrated water is effectively solved.
In addition, the quality-divided water purification system according to the above embodiment of the present invention may further have the following additional technical features:
according to an example of the invention, the split water purification system further comprises a first post-treatment unit arranged between the drinking water outlet and the water nozzle.
According to an example of the present invention, the split water purification system further comprises a first emergency branch comprising a first three-way valve and a second three-way valve, a first port of the first three-way valve being connected to the concentrate water outlet, a second port of the first three-way valve being connected to the concentrate water inlet, a third port of the first three-way valve being connected to the pre-treatment inlet, a first port of the second three-way valve being connected to the potable water outlet, a second port of the second three-way valve being connected to the potable water inlet, and a third port of the second three-way valve being connected to the water nozzle.
According to one example of the invention, the first emergency branch further comprises a second post-processing unit arranged between the third port of the first three-way valve and the pre-processing inlet.
According to an example of the present invention, the first emergency branch further includes a first check valve provided between the third port of the first three-way valve and the pre-treatment inlet and located on the downstream side of the second post-treatment unit, and a second check valve provided between the first post-treatment unit and the water nozzle and located on the upstream side of a connection point where the third port of the second three-way valve is connected to the water nozzle.
According to an example of the present invention, the quality-divided water purification system further includes a third post-treatment unit provided between the concentrated water outlet and the water using device.
According to an example of the present invention, the split water purification system further includes a second emergency branch including a third three-way valve and a four-way valve, a first port of the third three-way valve is connected to the pre-treatment outlet, a second port of the third three-way valve is connected to the water inlet, a third port of the third three-way valve is connected to the first port of the four-way valve, a second port of the four-way valve is connected to the concentrated water outlet, a third port of the four-way valve is connected to the third post-treatment unit, and a fourth port of the four-way valve is connected to the first port of the first three-way valve.
According to an example of the invention, the second emergency branch further comprises a third one-way valve arranged between the concentrate outlet and the third post-processing unit.
According to an example of the present invention, the quality-divided water purification system further includes a fourth check valve connected to the pre-treatment inlet and located upstream of a connection point of the first check valve to the pre-treatment inlet.
According to an example of the present invention, the quality-divided water purification system further includes a heating device for heating the water outlet of the water nozzle and/or a refrigerating device for refrigerating the water outlet of the water nozzle.
According to one example of the invention, the pre-treatment unit is selected from any one or combination of a PP cotton filter element, an activated carbon filter element, a ceramic filter element, an ion adsorption filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element or a KDF filter element, the purification unit is an RO membrane filter or a nanofiltration membrane filter, the drinking water storage unit and the concentrated water storage unit are both pressure water storage tanks or normal pressure water storage tanks, the water using equipment is selected from any one of a washing machine, a water heater and a water closet, the first post-treatment unit is selected from a microorganism filter element and/or a silica gel precipitate adsorption filter element, and the second post-treatment unit is selected from any one or combination of an ion adsorption filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element or a KDF filter element; the third post-treatment unit is selected from any one or combination of a microbial filter element, an ion adsorption filter element, a ceramic filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element and a KDF filter element.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a split water purification system according to one embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A quality-divided water purification system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a quality-divided water purification system according to an embodiment of the present invention includes: a pretreatment unit 1, a purification unit 2, a drinking water storage unit 3, a concentrated water storage unit 5 and a water using device 6.
Specifically, the pre-processing unit 1 has a pre-processing inlet 101 and a pre-processing outlet 102. The pre-treatment unit 1 may be selected from any one of PP cotton filter element, activated carbon filter element, ceramic filter element, ion adsorption filter element, microfiltration membrane filter element, ultrafiltration membrane filter element or KDF filter element or a combination thereof, so as to perform pretreatment such as turbidity reduction, hardness reduction, heavy metal ion removal and organic matter content reduction on tap water from municipal water supply.
The purification unit 2 has a water inlet 201, a potable water outlet 202 and a concentrate water outlet 203. The water inlet 201 is connected to the pre-treatment outlet 102. The purification unit 2 may be an RO membrane filter or a nanofiltration membrane filter.
The drinking water storage unit 3 has a drinking water inlet 301 and a drinking water outlet 302. The drinking water inlet 301 is connected to the drinking water outlet 202. The drinking water outlet 302 is connected with a water nozzle 4. The drinking water storage unit 3 may be a pressure water storage bucket or an atmospheric water storage bucket.
The concentrate water storage unit 5 has a concentrate water inlet 501 and a concentrate water outlet 502. The concentrate inlet 501 is connected to the concentrate outlet 203. The concentrated water storage unit 5 may be a pressure water storage tub or an atmospheric water storage tub.
A water using device 6 such as a washing machine, a water heater, a toilet bowl, etc. is connected to the concentrated water outlet 502.
According to the quality-classifying water purifying system provided by the embodiment of the invention, the concentrated water generated by the purifying unit is collected in the concentrated water storage unit, and the concentrated water treatment unit is connected with the water using equipment, so that the concentrated water is discharged after being used at least once, and the problem of water resource waste caused by direct discharge of the concentrated water is effectively solved.
According to an example of the invention, the split water purification system further comprises a first post-treatment unit 7, the first post-treatment unit 7 being arranged between the drinking water outlet 302 and the water nozzle 4. The first post-processing unit 7 is selected from a microorganism filter core and/or a silica gel precipitate adsorption filter core, and is used for filtering microorganisms possibly generated by the drinking water storage unit 3, and when the drinking water storage unit 3 adopts a pressure water storage barrel, the first post-processing unit 7 is used for filtering silica gel components possibly precipitated by a silica gel air bag in the pressure water storage barrel, so that the drinking water safety is improved, and the drinking water taste is improved.
According to a specific example of the present invention, the split quality water purification system further comprises a first emergency branch. The first emergency branch comprises a first three-way valve 8 and a second three-way valve 9. The first port 801 of the first three-way valve 8 is connected to the concentrate outlet 203, the second port 802 of the first three-way valve 8 is connected to the concentrate inlet 501, and the third port 803 of the first three-way valve 8 is connected to the pre-treatment inlet 101. The first port 901 of the second three-way valve 9 is connected to the drinking water outlet 202, the second port 902 of the second three-way valve 9 is connected to the drinking water inlet 301, and the third port 903 of the second three-way valve 9 is connected to the tap 4.
That is, in the normal operation state, the first port 801 of the first three-way valve 8 and the second port 802 of the first three-way valve 8 are normally open and the third port 803 of the first three-way valve 8 are normally closed, the first port 901 of the second three-way valve 9 and the second port 902 of the second three-way valve 9 are normally open and the third port 903 of the second three-way valve 9 is normally closed.
When the concentrate water storage unit 5 is full and the potable water storage unit 3 is empty and the user has only a potable water request, the third port 803 of the first three-way valve 8 is opened and communicates with the first port 801 of the first three-way valve 8 and the second port 802 of the first three-way valve 8 is disconnected, while the third port 903 of the second three-way valve 9 is opened and communicates with the first port 901 of the second three-way valve 9 and the second port 902 of the second three-way valve 9 is disconnected. At this time, the drinking water generated by the purifying unit 2 is supplied to the user through the drinking water outlet 202, the first port 901 of the second three-way valve 9, the third port 903 of the second three-way valve 9, and the water tap 4. Concentrated water generated by the purification unit 2 is converged with municipal tap water through the concentrated water outlet 203, the first port 801 of the first three-way valve 8 and the third port 803 of the first three-way valve 8, and then is pretreated by the pretreatment unit 1 again, and then enters the purification unit 2 for treatment.
Advantageously, said first emergency branch further comprises a second post-treatment unit 10, the second post-treatment unit 10 being arranged between the third port 803 of the first three-way valve 8 and the pre-treatment inlet 101. The second post-treatment unit 10 is selected from any one or combination of ion adsorption filter element, microfiltration filter element, ultrafiltration filter element or KDF filter element. This is because the concentrated water produced by the purification unit 2 is enriched in calcium and magnesium ions in raw water, and if the first emergency branch is started, the burden of the purification unit 2 is increased. By providing the second post-treatment unit 10, the concentration of calcium and magnesium ions in the concentrated water can be reduced, and the load on the purification unit 2 can be reduced.
Further, the first emergency branch further comprises a first check valve 11 and a second check valve 12. The first check valve 11 is provided between the third port 803 of the first three-way valve 8 and the pre-treatment inlet 101 and on the downstream side of the second post-treatment unit 10 to prevent the impact of municipal tap water on the second post-treatment unit 10. A second one-way valve 12 is provided between the first post-processing unit 7 and the water nozzle 4 and upstream of the point of connection of the third port 903 of the second three-way valve 9 to the water nozzle 4 to prevent impact on the first post-processing unit 7 when the first emergency branch is started.
According to an example of the present invention, the quality-divided water purification system further comprises a third post-treatment unit 13, the third post-treatment unit 13 being arranged between the concentrate outlet 502 and the water usage device 6. The third post-treatment unit 13 may be selected from any one or a combination of a microbial filter element, an ion adsorption filter element, a ceramic filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element, or a KDF filter element, for filtering out microorganisms that may be generated by the concentrated water storage unit 5, reducing the concentration of calcium and magnesium ions and the concentration of heavy metals of the concentrated water stored in the concentrated water storage unit 5, and the like.
According to one example of the invention, the split water purification system further comprises a second emergency branch. The second emergency branch comprises a third three-way valve 14 and a four-way valve 15. The first port 1401 of the third three-way valve 14 is connected to the pre-treatment outlet 102, the second port 1402 of the third three-way valve 14 is connected to the water inlet 201, the third port 1403 of the third three-way valve 14 is connected to the first port 1501 of the four-way valve 15, the second port 1502 of the four-way valve 15 is connected to the concentrate water outlet 203, the third port 1503 of the four-way valve 15 is connected to the third post-treatment unit 13, and the fourth port 1504 of the four-way valve 15 is connected to the first port 801 of the first three-way valve 8.
That is, in the normal state, the first port 801 of the first three-way valve 8 and the second port 802 of the first three-way valve 8 are normally open and the third port 803 of the first three-way valve 8 is normally closed. The first port 901 of the second three-way valve 9 and the second port 902 of the second three-way valve 9 are normally open and the third port 903 of the second three-way valve 9 is normally closed. The first port 1401 of the third three-way valve 14 and the second port 1402 of the third three-way valve 14 are normally open and the third port 1403 of the third three-way valve 14 is normally closed. The second port 1502 of the four-way valve 15 and the fourth port 1504 of the four-way valve 15 are normally open and the first port 1501 of the four-way valve 15 and the third port 1503 of the four-way valve 15 are normally closed.
When the concentrate water storage unit 5 is full and the potable water storage unit 3 is empty and the user has only a potable water request, the third port 803 of the first three-way valve 8 is opened and communicates with the first port 801 of the first three-way valve 8 and the second port 802 of the first three-way valve 8 is disconnected, the third port 903 of the second three-way valve 9 is opened and communicates with the first port 901 of the second three-way valve 9 and the second port 902 of the second three-way valve 9 is disconnected, and the third three-way valve 14 and the four-way valve 15 are kept in a normal state. At this time, the drinking water generated by the purifying unit 2 is supplied to the user through the drinking water outlet 202, the first port 901 of the second three-way valve 9, the third port 903 of the second three-way valve 9, and the water tap 4. Concentrated water generated by the purification unit 2 is purified by the post purification unit 10 through the concentrated water outlet 203, the first port 801 of the first three-way valve 8, the third port 803 of the first three-way valve 8, and is pretreated by the pre-treatment unit 1 again after being converged with municipal tap water, and then enters the purification unit 2 for treatment.
When the concentrated water storage unit 5 is empty and the potable water storage unit 3 is full and the user has only a request for the rinse water (i.e., the water use device 6 has a request for the service water), the third port 1403 of the third three-way valve 14 is opened and communicates with the first port 1401 of the third three-way valve 14, the first port 1501 of the four-way valve 15 and the third port 1503 of the four-way valve 15 are both opened and the second port 1502 of the four-way valve 15 and the fourth port 1504 of the four-way valve 15 are both closed, so that the first three-way valve 8 and the second three-way valve 9 are kept in a normal state. At this time, municipal tap water flows through the pre-treatment unit 1, the first port 1401 of the third three-way valve 14, the third port 1403 of the third three-way valve 14, the first port 1501 of the four-way valve 15, the third port 1503 of the four-way valve 15, and the third post-treatment unit 13, and is finally used by the water using device 6.
When the concentrated water storage unit 5 is empty and the potable water storage unit 3 is full and the user requests only the water for cleaning (i.e., the water using device 6 has a request for useful water), the first three-way valve 8 is kept in a normal state, the first port 901 of the second three-way valve 9 is opened, the three ports of the third three-way valve 14 are fully opened, and the fourth port 1504 of the four-way valve 15 is opened, so that the water flow can be branched off to flush the purification unit 2. That is, after the municipal tap water is pretreated by the pretreatment unit 1, the municipal tap water is divided into two paths in the third three-way valve 14, one path of the municipal tap water passes through the second port 1402 of the third three-way valve 14, the purification unit 2, the second port 1502 of the four-way valve 15, the other path of municipal tap water passes through the third port 1403 of the third three-way valve 14, the first port 1501 of the four-way valve 15, and then the two paths of water flows are converged at the third port 1503 of the four-way valve 15, and then pass through the third post-treatment unit 13, and finally the municipal tap water is used by the water equipment 6.
According to an example of the invention, the second emergency branch further comprises a third one-way valve 16, the third one-way valve 16 being arranged between the concentrate outlet 502 and the third post-processing unit 13 to prevent purified wash water from flowing into the concentrate water storage unit when the second emergency branch is started.
According to an example of the present invention, the quality-divided water purification system further comprises a fourth check valve 17, the fourth check valve 17 being connected to the pre-treatment inlet 101 and being located at an upstream side of a connection point of the first check valve 11 to the pre-treatment inlet 101. Therefore, once the municipal water supply system is in a water cut-off state, the residual water in the quality-dividing water purification system can be prevented from flowing back to the municipal water supply system, and secondary pollution to the municipal water supply system is avoided.
According to an example of the present invention, the quality-divided water purification system further comprises a heating device (not shown) for heating the water discharged from the water nozzle 4 and/or a refrigerating device (not shown) for refrigerating the water discharged from the water nozzle 4. Therefore, hot water or cold water can be obtained according to the user demands, so that the user experience is improved.
According to the quality-classifying water purification system provided by the embodiment of the invention, the concentrated water generated by the purification unit is collected in the concentrated water storage unit, the concentrated water treatment unit is connected with the water using equipment, and when the useful water request of the water using equipment is that the concentrated water stored in the concentrated water storage unit is preferentially used, the concentrated water is discharged after being used at least once, so that the problem of direct discharge of the concentrated water is effectively solved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. A split water purification system, comprising:
the pretreatment unit is provided with a pretreatment inlet and a pretreatment outlet;
the purification unit is provided with a water inlet, a drinking water outlet and a concentrated water outlet, and the water inlet is connected with the pre-treatment outlet;
the drinking water storage unit is provided with a drinking water inlet and a drinking water outlet, the drinking water inlet is connected with the drinking water outlet, and the drinking water outlet is connected with a water nozzle;
the concentrated water storage unit is provided with a concentrated water inlet and a concentrated water outlet, and the concentrated water inlet is connected with the concentrated water outlet; and
the water using device is connected with the concentrated water outlet;
the water tap also comprises a first post-processing unit, wherein the first post-processing unit is arranged between the drinking water outlet and the water tap;
the system also comprises a first emergency branch, the first emergency branch comprises a first three-way valve and a second three-way valve, a first port of the first three-way valve is connected with the concentrated water outlet, a second port of the first three-way valve is connected with the concentrated water inlet, the third port of the first three-way valve is connected with the pre-treatment inlet, the first port of the second three-way valve is connected with the drinking water outlet, the second port of the second three-way valve is connected with the drinking water inlet, and the third port of the second three-way valve is connected with the water nozzle;
the first emergency branch further comprises a second post-processing unit, and the second post-processing unit is arranged between the third port of the first three-way valve and the pre-processing inlet;
the first emergency branch further comprises a first one-way valve and a second one-way valve, the first one-way valve is arranged between the third port of the first three-way valve and the pre-treatment inlet and is positioned at the downstream side of the second post-treatment unit, and the second one-way valve is arranged between the first post-treatment unit and the water nozzle and is positioned at the upstream side of a connecting point of the third port of the second three-way valve and the water nozzle;
the water treatment device also comprises a third post-treatment unit, wherein the third post-treatment unit is arranged between the concentrated water outlet and the water using equipment;
the system also comprises a second emergency branch circuit, the second emergency branch circuit comprises a third three-way valve and a four-way valve, a first port of the third three-way valve is connected with the pre-treatment outlet, a second port of the third three-way valve is connected with the water inlet, the third port of the third three-way valve is connected with the first port of the four-way valve, the second port of the four-way valve is connected with the concentrated water outlet, the third port of the four-way valve is connected with the third post-processing unit, and the fourth port of the four-way valve is connected with the first port of the first three-way valve;
the water outlet device also comprises a heating device for heating the water outlet of the water nozzle and/or a refrigerating device for refrigerating the water outlet of the water nozzle.
2. The split water purification system of claim 1, wherein the second emergency branch further comprises a third one-way valve disposed between the concentrate outlet and the third post-processing unit.
3. The split water purification system of claim 2, further comprising a fourth one-way valve coupled to the pre-treatment inlet and located upstream of a point of coupling of the first one-way valve to the pre-treatment inlet.
4. The quality-dividing water purification system according to claim 3, wherein the pre-treatment unit is selected from any one of or a combination of a PP cotton filter element, an activated carbon filter element, a ceramic filter element, an ion adsorption filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element and a KDF filter element,
the purifying unit is an RO membrane filter or a nanofiltration membrane filter,
the drinking water storage unit is a pressure water storage barrel or an atmospheric water storage barrel; the concentrated water storage unit is a pressure water storage barrel or a normal pressure water storage barrel,
the water using device is selected from any one of a washing machine, a water heater and a water closet,
the first post-treatment unit is selected from a microorganism filter element and/or a silica gel precipitate adsorption filter element,
the second post-treatment unit is selected from any one or combination of an ion adsorption filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element and a KDF filter element;
the third post-treatment unit is selected from any one or combination of a microbial filter element, an ion adsorption filter element, a ceramic filter element, a microfiltration membrane filter element, an ultrafiltration membrane filter element and a KDF filter element.
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| JP2010162504A (en) * | 2009-01-16 | 2010-07-29 | Panasonic Electric Works Co Ltd | Water treatment apparatus |
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| CN103951095A (en) * | 2013-12-31 | 2014-07-30 | 青岛澳德龙电子科技有限公司 | Energy-saving type water treatment system |
| CN203728659U (en) * | 2014-01-26 | 2014-07-23 | 龙吉林 | Water-saving water purifier |
| CN103936179A (en) * | 2014-03-18 | 2014-07-23 | 张伟斌 | Drinking water treatment equipment |
| CN205133270U (en) * | 2015-11-09 | 2016-04-06 | 张伟斌 | Divide matter water purification system |
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