CN112551642A - Soft water system and resin regeneration method thereof - Google Patents
Soft water system and resin regeneration method thereof Download PDFInfo
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- CN112551642A CN112551642A CN202011565979.9A CN202011565979A CN112551642A CN 112551642 A CN112551642 A CN 112551642A CN 202011565979 A CN202011565979 A CN 202011565979A CN 112551642 A CN112551642 A CN 112551642A
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- 239000011347 resin Substances 0.000 title claims abstract description 170
- 229920005989 resin Polymers 0.000 title claims abstract description 170
- 238000011069 regeneration method Methods 0.000 title claims abstract description 80
- 239000008234 soft water Substances 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 239000002699 waste material Substances 0.000 claims abstract description 90
- 230000008929 regeneration Effects 0.000 claims abstract description 62
- 150000003839 salts Chemical class 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000010865 sewage Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims description 37
- 238000004140 cleaning Methods 0.000 claims description 15
- 230000001172 regenerating effect Effects 0.000 claims description 8
- 238000001728 nano-filtration Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 description 16
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 13
- 239000002689 soil Substances 0.000 description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 7
- 229910001425 magnesium ion Inorganic materials 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910001424 calcium ion Inorganic materials 0.000 description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/60—Cleaning or rinsing ion-exchange beds
-
- 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
-
- 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
-
- 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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a soft water system and a resin regeneration method thereof. The soft water system comprises a salt tank, a resin tank and a filter, wherein a tank opening of the resin tank is communicated with a first sewage discharge pipe, a sewage discharge opening of the filter is communicated with a second sewage discharge pipe, an inlet of the filter is communicated with a tank opening of the resin tank, and an outlet of the filter is communicated with an inner cavity of the salt tank; when the first drain pipe is opened, the regenerated waste liquid in the resin tank is discharged through the first drain pipe; when first blow off pipe was closed and the second blow off pipe was opened, the hardness ion in order to get rid of self in the filter was flowed into to the regeneration waste liquid in the resin tank, and wherein the high rigidity waste liquid that filters the production discharges through the second blow off pipe, and the regeneration waste liquid after the filtration carries out circulation regeneration to the resin in the jar in flowing to the resin tank through the salt case. The soft water system enables resin to be regenerated more effectively, and meanwhile, the purpose of saving salt can be achieved, the periodic water making amount of the resin can be improved, and the service life of the resin is prolonged.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a soft water system and a resin regeneration method thereof.
Background
With the improvement of living standard, people have higher and higher requirements on the used water quality, for example, the hardness of washing water is not too high, and accordingly, a water softener which can soften water body by using resin to remove easily-scaling components (mainly calcium and magnesium ions) is more and more popular. Wherein, when the water softener is in use, the failed resin needs to be regenerated by adding strong brine. However, after the regeneration is performed for a period of time, the salt content concentration in the regeneration waste liquid is large, and if the salt content is directly discharged, the salt is wasted, and the regeneration cost is also increased.
Disclosure of Invention
Based on the above, the invention provides the soft water system and the resin regeneration method thereof, aiming at the problem of salt waste caused in the process of regenerating the resin in the resin tank, which can recycle the salt and avoid the salt waste.
A soft water system comprises a salt tank, a resin tank and a filter, wherein a tank opening of the resin tank is communicated with a first drain pipe, a drain opening of the filter is communicated with a second drain pipe, an inlet of the filter is communicated with a tank opening of the resin tank, and an outlet of the filter is communicated with an inner cavity of the salt tank;
when the first drain pipe is opened, the regeneration waste liquid in the resin tank is discharged through the first drain pipe;
when the first blow off pipe is closed and the second blow off pipe is opened, the regeneration waste liquid in the resin tank flows into in order to get rid of self hardness ion in the filter, wherein the high rigidity waste liquid that filters the production is through the second blow off pipe is discharged, and the regeneration waste liquid after the filtration passes through the salt case flows to in the resin tank carries out circulation regeneration to the resin in the jar.
In one embodiment, the tank opening of the resin tank is further communicated with a flushing pipe, when the flushing pipe and the first drain pipe are opened, flushing liquid of the flushing pipe flows into the resin tank to clean the resin in the resin tank, and waste liquid after cleaning is discharged through the first drain pipe.
In one embodiment, when the flushing pipe, the second sewage draining pipe and the first sewage draining pipe are opened, flushing liquid of the flushing pipe flows through the resin tank to flush the filter, and cleaned waste liquid is drained through the second sewage draining pipe.
In one embodiment, a third control valve is provided on the flush tube.
In one embodiment, the first sewage draining pipe is provided with a first control valve, and the second sewage draining pipe is provided with a second control valve.
In one embodiment, the first port of the second sewage pipe is communicated with the sewage outlet of the filter, the second port of the second sewage pipe is communicated with the first sewage pipe, and the first control valve and the second port of the second sewage pipe are sequentially distributed along the flow direction of the regeneration waste liquid in the first sewage pipe.
In one embodiment, the second control valve is a waste water ratio solenoid valve;
when the regenerated waste liquid, the cleaned waste liquid discharged by the resin tank are discharged through the first discharge pipe and the high-hardness waste liquid is discharged through the second discharge pipe, the second control valve is in a closed state;
and when the cleaned waste liquid discharged by the filter flows out through the second sewage discharge pipe, the second control valve is in an open state.
In one embodiment thereof, the water softening system further comprises: the main control module is electrically connected with the first control valve, the second control valve and the third control valve;
the main control module is used for opening the first control valve and closing the second control valve and the third control valve when the resin is regenerated, and/or closing the first control valve, the second control valve and the third control valve when the resin is regenerated for a preset time, and/or opening the first control valve, the third control valve and closing the second control valve when the resin tank is cleaned, and/or opening the second control valve, the third control valve and closing the first control valve when the filter is cleaned.
In one embodiment thereof, the filter is a nanofiltration filter.
A resin regeneration method for a soft water system, the resin regeneration method comprising:
before regenerating the resin, opening a first drain pipe to discharge the regeneration waste liquid in the resin tank through the first drain pipe;
treat right after the resin predetermines the regeneration of duration, close first blow off pipe and open the second blow off pipe, in order to with regeneration waste liquid in the resin tank flows into in order to get rid of self hardness ion in the filter, and the high rigidity waste liquid that filters the production passes through the second blow off pipe is discharged, and regeneration waste liquid after the filtration flows into through the salt case to carry out the circulation regeneration to the resin in the jar in the resin tank.
In one embodiment thereof, after regenerating the resin, the resin regeneration method further comprises: and opening the flushing pipe and the first drain pipe, conveying cleaning liquid into the resin tank to clean the resin tank, and discharging the cleaned waste liquid through the first drain pipe.
In one embodiment thereof, after the resin tank is cleaned, the resin regeneration method further comprises:
opening the flushing pipe, the second blow-off pipe and closing the first blow-off pipe, conveying cleaning liquid to the filter through the resin tank to clean the filter, and discharging cleaned waste liquid through the second blow-off pipe.
Above-mentioned soft water system and resin regeneration method thereof, when the replacement reaction between saturated salt water and resin reached the equilibrium, can close the first blow off pipe with resin jar mouth intercommunication and open the second blow off pipe with the drain intercommunication of filter for the regeneration waste liquid in the resin jar flows into in the filter in order to get rid of self hardness ion, wherein the high rigidity waste liquid that filters the production discharges through the second blow off pipe, regeneration waste liquid (being equivalent to high concentration salt water) after the filtration flows to resin jar in through the salt case and carries out the circulation regeneration to the resin in the jar, this can make the resin regeneration more effective also can reach the purpose of festival salt simultaneously, also can promote the cycle system water yield of resin, extension resin life.
Drawings
FIG. 1 is a schematic structural diagram of a water softening system according to an embodiment of the present invention;
FIG. 2 is a schematic flow diagram illustrating the regeneration waste liquid discharged from the soft water system before the replacement reaction between the saturated brine and the resin reaches equilibrium according to an embodiment of the present invention;
FIG. 3 is a schematic flow diagram of the regeneration waste liquid discharged from the soft water system when the displacement reaction between the saturated brine and the resin reaches equilibrium according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a water softening system according to another embodiment of the present invention.
Wherein the reference numerals in the drawings are as follows:
100. a salt box; 110. a salt valve; 200. a resin tank; 300. a filter; 410. a first drain pipe; 420. a second sewage draining pipe; 510. a first control valve; 520. a second control valve; 600. a flush tube; 700. a multiway valve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
As shown in fig. 1 and 4, a water softening system according to an embodiment of the present invention includes a salt tank 100, a resin tank 200, and a filter 300, wherein a tank opening of the resin tank 200 is communicated with a first drainage pipe 410, a drainage opening of the filter 300 is communicated with a second drainage pipe 420, an inlet of the filter 300 is communicated with a tank opening of the resin tank 200, and an outlet of the filter 300 is communicated with an inner cavity of the salt tank 100; as shown in fig. 2, when the first drain pipe 410 is opened, the regeneration waste liquid in the resin tank 200 is discharged through the first drain pipe 410; as shown in fig. 3, when the first drainage pipe 410 is closed and the second drainage pipe 420 is opened, the regeneration waste liquid in the resin tank 200 flows into the filter 300 to remove hardness ions of the regeneration waste liquid, wherein the high hardness waste liquid generated by filtering is discharged through the second drainage pipe 420, and the filtered regeneration waste liquid flows into the resin tank 200 through the salt box 100 to perform cyclic regeneration on the resin in the tank.
In fig. 2 and 3, arrows indicate the flow direction of the regeneration waste liquid. The hardness ion is Ca2+、Mg2+Higher order metal cations capable of increasing water hardness, the high hardness waste liquid containing Ca2+、Mg2+And the like, which can increase the water hardness.
It will be appreciated that the mouth of the resin tank 200 communicates with the salt valve 110 located in the salt tank 100. Wherein the salt valve 110 is installed in a salt well in the salt tank 100, the salt valve 110 is used for injecting water into the salt tank 100 and sucking salt water from the salt tank 100 into the resin tank 200, and the salt valve 110 also has a liquid level control function, i.e., controlling the amount of water injected into the salt tank 100 and controlling the amount of water sucked from the salt tank 100.
The following is a description of the operation of the soft water system as described above:
when the resin in the resin tank 200 is regenerated, the first drain pipe 410 is opened, the saturated brine in the salt tank 100 flows into the resin tank 200 through the salt valve 110 to regenerate the resin, and the regenerated waste liquid generated in the process is directly discharged through the first drain pipe 410. When the resin regeneration is just started, the substitution reaction between the saturated brine and the resin is not in equilibrium, and the discharged regeneration waste liquid is a high-hardness regeneration waste liquid containing high-concentration Ca2+、Mg2+Plasma hardness ions, and the concentration of sodium ions in the regeneration waste liquid is low at this time.
When the resin is regenerated for a preset time, the replacement reaction between saturated brine and the resin is balanced, the salt content and the hardness ion concentration of the generated regenerated waste liquid are also in dynamic balance, and most of brine is wasted if the regenerated waste liquid is directly discharged. At this time, the first drain pipe 410 is closed, the second drain pipe 420 is opened, the regenerated waste liquid flows into the filter 300 to be filtered, and the filter 300 removes Ca in the regenerated waste liquid2+、Mg2+Plasma hardness ion without interception of Na+And (3) discharging high-hardness waste liquid generated by filtering through the second sewage discharge pipe 420 by using low-order ions, and enabling the filtered regeneration waste liquid to flow into the resin tank 200 through the salt box 100 to perform cyclic regeneration on the resin in the tank. The number of the cyclic regeneration may be set according to the degree of the resin failure, for example, 5 to 6 times. When the filtered regeneration waste liquid is used to cyclically regenerate the resin in the tank, the first drain pipe 410 is closed and the second drain pipe 420 is opened. I.e. the regeneration waste liquid is circulated in the flow direction shown in fig. 3.
As described above, when the replacement reaction between the saturated brine and the resin reaches the equilibrium, the first drain pipe 410 connected to the opening of the resin tank 200 can be closed and the second drain pipe 420 connected to the drain of the filter 300 can be opened, so that the regeneration waste liquid in the resin tank 200 flows into the filter 300 to remove the hardness ions of the regeneration waste liquid, wherein the high hardness waste liquid generated by filtration is discharged through the second drain pipe 420, and the filtered regeneration waste liquid (equivalent to high concentration brine) flows into the resin tank 200 through the salt tank 100 to perform the cyclic regeneration of the resin in the tank, which can make the resin regeneration more effective and can achieve the purpose of saving salt, also can improve the periodic water production of the resin, and prolong the service life of the resin.
As shown in fig. 1 to 4, in some embodiments of the present invention, the tank opening of the resin tank 200 is further communicated with a flushing pipe 600, when the flushing pipe 600 and the first drain pipe 410 are opened, the flushing liquid of the flushing pipe 600 flows into the resin tank 200 to clean the resin in the resin tank 200, and the waste liquid after cleaning is discharged through the first drain pipe 410. The rinse liquid can wash the resin tank 200 in the resin tank 200 to rinse and discharge dirt between and in the resin.
As an example, a third control valve (not shown) is provided on the flushing pipe 600.
Further, in some embodiments of the present invention, when the flushing pipe 600, the second drainage pipe 420 are opened and the first drainage pipe 410 is closed, the flushing liquid of the flushing pipe 600 flows through the resin tank 200 to flush the filter 300, and the cleaned waste liquid is discharged through the second drainage pipe 420. Because the pipe diameter of the salt well is small, the pipe diameter is 1/6 which is the largest of the pipe diameter of a common pipeline (such as a flushing pipe 600), so that the flow of the cleaning liquid flowing through the filter 300 is larger than the water flow (called water flow for short) of the filter 300 during water making, the large-flow cleaning liquid can wash the surface of the filter element of the filter 300 at a high flow speed, and the high-hardness dirt on the surface of the filter element is effectively washed and discharged. Taking a soft water system with the water production amount of 1t/h as an example, the water production and flushing flow of the resin tank 200 is 1t/h, the salt absorption and slow flushing flow is generally lower than 150L/h, and the design is carried out according to the salt absorption and slow flushing flow, so the water production flow of the filter 300 is lower than 150L/h, the flow during flushing can reach 1000L/h and is more than 6 times of the water production flow, and the high-flow-rate flushing water can quickly flush away dirt on the surface of a filter element of the filter 300 until the water production flow of the filter 300 is recovered.
As shown in fig. 1, in some embodiments of the present invention, a first control valve 510 is provided on the first sewage pipe 410, and a second control valve 520 is provided on the second sewage pipe 420. Of course, in other embodiments of the present invention, the first control valve 510 may be disposed at the tank port of the resin tank 200, and the second control valve 520 may be disposed at the drain port of the filter 300.
Further, as shown in fig. 1, in some embodiments of the present invention, a first port of the second soil pipe 420 communicates with the soil outlet of the filter 300, and a second port of the second soil pipe 420 communicates with the first soil pipe 410, wherein the first control valve 510 and the second port of the second soil pipe 420 are sequentially distributed in a flow direction of the regeneration waste liquid in the first soil pipe 410. Thus, the regeneration waste liquid discharged from the resin tank 200 in the previous stage and the high-hardness waste liquid discharged from the filter 300 can be discharged into the same collection container, so that the two waste liquids can be conveniently collected, and the post-treatment is facilitated. Of course, in other embodiments of the present invention, as shown in fig. 4, the first and second soil pipes 410 and 420 may be two soil pipes independent of each other.
In particular to some embodiments of the present invention, the second control valve 520 is a waste water ratio solenoid valve; when the regenerated waste liquid, the cleaned waste liquid discharged from the resin tank 200 are discharged through the first drain pipe 410 and the high hardness waste liquid is discharged through the second drain pipe 420, the second control valve 520 is in a closed state; when the washed waste liquid discharged from the filter 300 flows out through the second soil pipe 420, the second control valve 520 is in an open state. The waste water ratio electromagnetic valve is provided with a first flow channel and a second flow channel, the liquid flowing flow rate of the first flow channel is smaller than that of the second flow channel, the first flow channel is used for flowing high-hardness waste liquid, and the second flow channel is used for flowing cleaning liquid. When the second control valve 520 is closed, the first flowing water passage is in an open state, and the second flowing water passage is in a closed state; when the second control valve 520 is opened, the second water flow passage is in an open state.
Optionally, the water softening system further comprises: a main control module (not shown) electrically connected to the first control valve 510, the second control valve 520, and the third control valve; the main control module is used for opening the first control valve 510 and closing the second control valve 520 and the third control valve when resin regeneration is started, and/or closing the first control valve 510, the second control valve 520 and the third control valve when resin regeneration is performed for a preset time, and/or opening the first control valve 510 and the third control valve and closing the second control valve 520 when the resin tank 200 is cleaned, and/or opening the second control valve 520 and the third control valve and closing the first control valve 510 when the filter 300 is cleaned. Thus, the automation degree of the soft water system can be improved.
Optionally, the first control valve 510 and the second control valve 520 are solenoid valves or electric valves. The main control module may be a PLC (Programmable Logic Controller).
Alternatively, the preset time period is a time period that the displacement reaction between the saturated brine and the resin takes from the start to the equilibrium. The preset time length can be determined by the following method: in the process of regenerating the resin, whether the displacement reaction reaches the equilibrium is judged by titration at regular intervals, and when the equilibrium is reached, the time length from the beginning of the displacement reaction to the equilibrium is calculated. Of course, in some other embodiments of the present invention, the water hardness may be directly obtained by the water hardness sensor to determine whether the replacement reaction is balanced, but the water hardness sensor is expensive, which increases the cost of the soft water system.
As shown in fig. 1, in some embodiments of the present invention, a multi-way valve 700 is provided at a port of the resin tank 200, a first port of the multi-way valve 700 communicates with an inlet of the filter 300, a second port of the multi-way valve 700 communicates with the first drain pipe 410, a third port of the multi-way valve 700 communicates with the salt valve 110 located in the salt tank 100, and a fourth port of the multi-way valve 700 communicates with the flushing pipe 600. In this manner, communication of the resin tank 200 with each component and piping is facilitated. Optionally, the multiple-way valve 700 is electrically connected to a main control module, and the main control module is configured to control opening and closing of each port of the multiple-way valve 700.
In some embodiments of the present invention, filter 300 is a nanofiltration filter. Ca2+、Mg2+The diameter of the plasma high-order ions is large, the electrode is strong, and the nanofiltration membrane and Ca of the nanofiltration filter are2+、Mg2+The high-order ions generate large repulsive force, and the repulsive force generated by the high-order ions and the low-order ions such as Na + is not enough to intercept. It should be noted that, when the second control valve 520 is in the closed state, the pressure of the flowing water channel in the nanofiltration filter is very high; when the second control valve 520 is in an open state, the pressure of the flowing water channel within the nanofiltration filter is substantially 0.
Another embodiment of the present invention also provides a resin regeneration method of a soft water system, the resin regeneration method including:
step S100, before the resin is regenerated, opening a first drain pipe 410 and closing a second drain pipe 420 to discharge the regenerated waste liquid in the resin tank 200 through the first drain pipe 410;
step S200, after the resin is regenerated for a preset time, the first drainage pipe 410 is closed, so that the regenerated waste liquid in the resin tank 200 flows into the filter 300 to remove hardness ions of the resin, the high-hardness waste liquid generated by filtering is discharged through the second drainage pipe 420, and the filtered regenerated waste liquid flows into the resin tank 200 through the salt box 100 to perform cyclic regeneration on the resin in the tank.
Alternatively, the preset time period is a time period that the displacement reaction between the saturated brine and the resin takes from the start to the equilibrium. The preset time length can be determined by the following method: in the process of regenerating the resin, whether the displacement reaction reaches the equilibrium is judged by titration at regular intervals, and when the equilibrium is reached, the time length from the beginning of the displacement reaction to the equilibrium is calculated. Of course, in some other embodiments of the present invention, the water hardness may be directly obtained by the water hardness sensor to determine whether the replacement reaction is balanced, but the water hardness sensor is expensive, which increases the cost of the soft water system.
When the replacement reaction between the saturated brine and the resin reaches the balance, the first drainage pipe 410 communicated with the tank opening of the resin tank 200 can be closed and the second drainage pipe 420 communicated with the drainage outlet of the filter 300 can be opened, so that the regeneration waste liquid in the resin tank 200 flows into the filter 300 to remove the hardness ions of the regeneration waste liquid, wherein the high-hardness waste liquid generated by filtering is discharged through the second drainage pipe 420, and the filtered regeneration waste liquid (equivalent to high-concentration brine) flows into the resin tank 200 through the salt tank 100 to perform cyclic regeneration on the resin in the tank, so that the resin regeneration can be more effective, the purpose of saving salt can be achieved, the periodic water production of the resin can be improved, and the service life of the resin can be prolonged.
In some embodiments of the invention, after regenerating the resin, the resin regeneration method further comprises: step S300 is to open the flushing pipe 600 and the first drain pipe 410, to feed the cleaning liquid into the resin tank 200 to clean the resin tank 200, and to discharge the waste liquid after cleaning through the first drain pipe 410. It should be noted that, when this step is performed, the first drain pipe 410 is opened and the second drain pipe 420 is closed. The rinse liquid can wash the resin tank 200 in the resin tank 200 to rinse and discharge dirt between and in the resin.
In some embodiments of the present invention, after the cleaning of the resin tank 200, the resin regeneration method further comprises: step S400, opening the flushing pipe 600, the second drain pipe 420 and closing the first drain pipe 410, conveying the cleaning solution to the filter 300 through the resin tank 200 to positively clean the filter 300, and discharging the cleaned waste liquid through the second drain pipe 420. It should be noted that, when this step is performed, the first drain pipe 410 is closed and the second drain pipe 420 is opened. The large-flow cleaning fluid can wash the surface of the filter element of the filter 300 at a high flow rate, and effectively wash and remove high-hardness dirt on the surface of the filter element.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A soft water system is characterized by comprising a salt tank, a resin tank and a filter, wherein a tank opening of the resin tank is communicated with a first drain pipe, a drain opening of the filter is communicated with a second drain pipe, an inlet of the filter is communicated with a tank opening of the resin tank, and an outlet of the filter is communicated with an inner cavity of the salt tank;
when the first drain pipe is opened, the regeneration waste liquid in the resin tank is discharged through the first drain pipe;
when the first blow off pipe is closed and the second blow off pipe is opened, the regeneration waste liquid in the resin tank flows into in order to get rid of self hardness ion in the filter, wherein the high rigidity waste liquid that filters the production is through the second blow off pipe is discharged, and the regeneration waste liquid after the filtration passes through the salt case flows to in the resin tank carries out circulation regeneration to the resin in the jar.
2. The water softening system according to claim 1, wherein the tank opening of the resin tank is further communicated with a flushing pipe, when the flushing pipe and the first drain pipe are opened, flushing liquid of the flushing pipe flows into the resin tank to clean the resin in the resin tank, and waste liquid after cleaning is discharged through the first drain pipe.
3. The water softening system according to claim 2, wherein when the flushing pipe, the second drain pipe are opened and the first drain pipe is closed, the flushing liquid of the flushing pipe flows through the resin tank to flush the filter, and the waste liquid after the flushing is discharged through the second drain pipe.
4. The water softening system according to claim 3, wherein a third control valve is provided on the flushing pipe.
5. The water softening system according to claim 4, wherein the first drain pipe is provided with a first control valve, and the second drain pipe is provided with a second control valve.
6. The water softening system according to claim 5, wherein the first port of the second drain pipe is communicated with the drain port of the filter, and the second port of the second drain pipe is communicated with the first drain pipe, wherein the first control valve and the second port of the second drain pipe are sequentially distributed along a flow direction of the regeneration waste liquid in the first drain pipe.
7. The water softening system of claim 6, wherein the second control valve is a waste water ratio solenoid valve;
when the regenerated waste liquid, the cleaned waste liquid discharged by the resin tank are discharged through the first discharge pipe and the high-hardness waste liquid is discharged through the second discharge pipe, the second control valve is in a closed state;
and when the cleaned waste liquid discharged by the filter flows out through the second sewage discharge pipe, the second control valve is in an open state.
8. The water softening system of claim 5, further comprising: the main control module is electrically connected with the first control valve, the second control valve and the third control valve;
the main control module is used for opening the first control valve and closing the second control valve and the third control valve when the resin is regenerated, and/or closing the first control valve, the second control valve and the third control valve when the resin is regenerated for a preset time, and/or opening the first control valve, the third control valve and closing the second control valve when the resin tank is cleaned, and/or opening the second control valve, the third control valve and closing the first control valve when the filter is cleaned.
9. The water softening system according to any one of claims 1-8, wherein the filter is a nanofiltration filter.
10. A resin regeneration method for a soft water system, comprising:
before regenerating the resin, opening a first drain pipe to discharge the regeneration waste liquid in the resin tank through the first drain pipe;
treat right after the resin predetermines the regeneration of duration, close first blow off pipe and open the second blow off pipe, in order to with regeneration waste liquid in the resin tank flows into in order to get rid of self hardness ion in the filter, and the high rigidity waste liquid that filters the production passes through the second blow off pipe is discharged, and regeneration waste liquid after the filtration flows into through the salt case to carry out the circulation regeneration to the resin in the jar in the resin tank.
11. The resin regeneration method of claim 10, wherein after regenerating the resin, the resin regeneration method further comprises: and opening the flushing pipe and the first drain pipe, conveying cleaning liquid into the resin tank to clean the resin tank, and discharging the cleaned waste liquid through the first drain pipe.
12. The resin regeneration method of claim 11, further comprising, after the resin tank is purged:
opening the flushing pipe, the second blow-off pipe and closing the first blow-off pipe, conveying cleaning liquid to the filter through the resin tank to clean the filter, and discharging cleaned waste liquid through the second blow-off pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565979.9A CN112551642A (en) | 2020-12-25 | 2020-12-25 | Soft water system and resin regeneration method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011565979.9A CN112551642A (en) | 2020-12-25 | 2020-12-25 | Soft water system and resin regeneration method thereof |
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| CN112551642A true CN112551642A (en) | 2021-03-26 |
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| CN202011565979.9A Pending CN112551642A (en) | 2020-12-25 | 2020-12-25 | Soft water system and resin regeneration method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114084929A (en) * | 2021-10-21 | 2022-02-25 | 河南中烟工业有限责任公司 | Softened water production equipment |
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