CN114163032A - Water purification unit's waterway system and have its water purification unit - Google Patents
Water purification unit's waterway system and have its water purification unit Download PDFInfo
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- CN114163032A CN114163032A CN202011458628.8A CN202011458628A CN114163032A CN 114163032 A CN114163032 A CN 114163032A CN 202011458628 A CN202011458628 A CN 202011458628A CN 114163032 A CN114163032 A CN 114163032A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 167
- 238000000746 purification Methods 0.000 title claims description 15
- 239000012528 membrane Substances 0.000 claims abstract description 92
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 61
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 24
- 239000000460 chlorine Substances 0.000 claims description 24
- 229910052801 chlorine Inorganic materials 0.000 claims description 24
- 230000001954 sterilising effect Effects 0.000 claims description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 13
- DPGAAOUOSQHIJH-UHFFFAOYSA-N ruthenium titanium Chemical compound [Ti].[Ru] DPGAAOUOSQHIJH-UHFFFAOYSA-N 0.000 claims description 13
- 229910052719 titanium Inorganic materials 0.000 claims description 13
- 239000010936 titanium Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000006298 dechlorination reaction Methods 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 8
- 238000009395 breeding Methods 0.000 abstract description 2
- 230000001488 breeding effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 13
- 238000000909 electrodialysis Methods 0.000 description 11
- 239000013505 freshwater Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003011 anion exchange membrane Substances 0.000 description 2
- 238000005341 cation exchange Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- -1 hypochlorite ions Chemical class 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
- 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
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/022—Membrane sterilisation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2303/18—Removal of treatment agents after treatment
- C02F2303/185—The treatment agent being halogen or a halogenated compound
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a waterway system of water purifying equipment and the water purifying equipment, wherein the waterway system comprises: stacking the films; the electrolysis module is arranged at the upstream end of the membrane stack, and electrolyzed water generated by the electrolysis module flows into the membrane stack to sterilize the membrane stack; and the raw water waterway is connected with the inlet end of the electrolysis module. According to the waterway system of the water purifying equipment provided by the embodiment of the invention, the electrolysis module is arranged at the upstream end of the membrane stack, so that the membrane stack can be sterilized discontinuously according to the actual situation, a large number of microorganisms are prevented from breeding in the membrane stack, and the effluent quality of the water purifying equipment is improved.
Description
Technical Field
The application relates to the technical field of water purification, specifically establish and reach a water purification unit's waterway system and have its water purification unit.
Background
The technology of electrodialysis reversal (EDR) is used in household water purification equipment, and has the advantage that a filter element does not need to be replaced. The reverse electrodialysis membrane stack structure mainly comprises selectively permeable anion and cation membrane materials, electrode materials for providing an electric field and partition plate materials for isolating the anion and cation membranes. In the working process of the reverse-electrode electrodialysis membrane stack, the electrode voltage direction is changed, so that the moving direction of ions is changed, the membrane and the electrode can be effectively prevented from scaling, and the self-cleaning effect is achieved.
However, the reverse electrodialysis membrane stack structure does not have the function of actively separating bacteria, and after long-term use, the water outlet of the water purifying equipment is turbid or has peculiar smell due to the propagation of the bacteria.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide a waterway system of a water purifying apparatus, which can intermittently sterilize a membrane stack and improve the effluent quality of the waterway system.
The invention also provides water purification equipment with the waterway system, and the water purification equipment has good effluent quality and is safe and healthy for users to use.
According to the embodiment of the invention, the waterway system of the water purifying device comprises: stacking the films; the electrolysis module is arranged at the upstream end of the membrane stack, and electrolyzed water generated by the electrolysis module flows into the membrane stack to sterilize the membrane stack; and the raw water waterway is connected with the inlet end of the electrolysis module.
According to the waterway system of the water purifying equipment provided by the embodiment of the invention, the electrolysis module is arranged at the upstream end of the membrane stack, so that the membrane stack can be sterilized discontinuously according to the actual situation, a large number of microorganisms are prevented from breeding in the membrane stack, and the effluent quality of the water purifying equipment is improved.
In addition, the waterway system of the water purifying apparatus according to the above embodiment of the present invention may further have the following additional technical features:
according to some embodiments of the invention, a plurality of water paths are provided between the electrolysis module and the membrane stack.
According to some embodiments of the invention, the membrane stack has a water inlet waterway disposed in parallel with the electrolysis module.
According to some embodiments of the invention, the membrane stack has an effluent waterway, and the downstream end of the membrane stack is provided with a chlorine removal module, and the chlorine removal module is connected with the effluent waterway.
In an optional embodiment, the dechlorination module is an activated carbon filter element.
In an optional embodiment, the waterway system further comprises a raw water tank, and the raw water tank, the electrolysis module and the chlorine removal module are sequentially connected to form a closed loop.
In a further optional example, a water pump is arranged between the raw water tank and the electrolysis module.
According to some embodiments of the invention, the electrolysis module comprises a titanium ruthenium-coated positive electrode and a titanium sheet negative electrode, both the titanium ruthenium-coated positive electrode and the titanium sheet negative electrode having a thickness of between 20 μm and 1000 μm and an area of 1cm2-100cm2And the spacing distance between the titanium ruthenium-coated anode and the titanium sheet cathode is 0.5mm-20 mm.
In an optional embodiment, the method for sterilizing the membrane stack by the electrolysis module is as follows, the water flow of the electrolysis module is controlled to be between 100ml/min and 2000ml/min, the current is controlled to be between 0.5A and 20A, and the chlorine concentration of the electrolyzed water is controlled to be between 0.5ppm and 10 ppm.
According to the embodiment of the invention, the water purifying equipment comprises the water path system, and the water path system provided by the embodiment of the invention is provided with the electrolysis module for intermittently sterilizing the membrane stack, so that the effluent quality of the water path system is ensured, and the water purifying equipment provided by the embodiment of the invention also has the advantage of good effluent quality.
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 view of a waterway system of a water purifying apparatus according to some embodiments of the present invention;
FIG. 2 is a schematic view of a waterway system of a water purifying apparatus according to other embodiments of the present invention;
figure 3 is a schematic view of the electrolysis module of figures 1 and 2.
Reference numerals:
a waterway system 100;
a membrane stack 10;
an electrolysis module 20; a titanium ruthenium-coated positive electrode 21; a titanium sheet negative electrode 22;
a raw water path 30;
a water inlet circuit 41; an effluent water path 42; a concentrated water circuit 421; a fresh water waterway 422;
a dechlorination module 50;
a raw water tank 60;
a water pump 70.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 to 3, a waterway system 100 of a water purifying apparatus according to an embodiment of the present invention is described, and as shown in fig. 1 and 2, the waterway system 100 includes a raw water waterway 30, an electrolysis module 20, and a membrane stack 10, which are connected in sequence.
Specifically, the membrane stack 10 has one or more pairs of membrane pairs, a positive electrode plate, a negative electrode plate, and a separator, each pair of membranes includes an anion exchange membrane and a cation exchange membrane that are disposed opposite to each other, the separator is disposed between the anion exchange membrane and the cation exchange membrane, the separator may also be disposed between the positive electrode plate and the anion membrane, the separator may also be disposed between the negative electrode plate and the cation membrane, and the separator mainly plays a role in guiding and supporting the ion exchange membrane.
The raw water path 30 introduces raw water, which may be tap water or barreled water, into the membrane stack 10 for electrodialysis. For example, the raw water circuit 30 may be connected to a municipal tap water pipe, and the raw water may be introduced into the membrane stack 10 under the water pressure of the municipal tap water to perform electrodialysis. Of course, the municipal tap water may be stored in the raw water tank 60 in advance, and after standing and precipitating in the raw water tank 60, the raw water is filtered by a pre-filter (not shown) and then enters the membrane stack 10 for electrodialysis. In the case where the water pressure of the water channel system 100 is not sufficient, a water pump 70 may be installed in the raw water channel 30, and the raw water may be pumped into the membrane stack 10 by the water pump 70 to be filtered.
After the electrodialysis is performed on the raw water in the membrane stack 10, the raw water can be divided into two paths of water, one path is fresh water, and the other path is concentrated water, that is, the water outlet path 42 of the membrane stack 10 includes a fresh water path 422 and a concentrated water path 421. The fresh water flowing out of the membrane stack 10 can be directly sent out, and can be sent out after being filtered by a post-positioned filter element. Of course, in order to meet different water requirements of users, the water purifying device can also comprise an instant heating component and/or a cold tank, and the fresh water is refrigerated or heated through the instant heating component and the cold tank.
It can be understood that after the water purifying apparatus is used for a period of time, a part of microorganisms can remain on the surface or in the pores of the ion membrane or on the surface of the partition plate or near the electrodes, so that the number of bacteria in the membrane stack 10 can gradually increase, resulting in turbidity or odor of the effluent, and further affecting the effluent quality of the water purifying apparatus.
Therefore, in the water path system 100 of the water purifying apparatus according to the embodiment of the present invention, the electrolysis module 20 is disposed at the upstream section of the membrane stack 10, and when the electrolysis module 20 is activated, electrolyzed water having a sterilization effect is generated, wherein the electrolyzed water contains sterilization ions such as hypochlorite ions. When the electrolyzed water flows into the membrane stack 10, the microorganisms in the membrane stack 10 can be killed, and the killed microorganism corpses are discharged along with the water flow.
In practical applications, the start-up frequency and the operation time of the electrolysis module 20 can be manually set, for example, in the case of poor local water quality, the membrane stack 10 can be sterilized once or more than twice a day, and in the case of good local water quality, the membrane stack 10 can be sterilized at intervals of more than two days. Or the user can determine whether to start the electrolysis module 20 according to the water yield per day, the water yield is high, the sterilization frequency can be increased, the water yield is low, and the sterilization frequency can be reduced.
Of course, before the water purification apparatus leaves the factory, the water purification apparatus may also perform professional setting on the starting frequency and the operation duration of the electrolysis module 20, and perform real-time adjustment according to the water quality condition of the effluent water. That is, whether the electrolysis module 20 is started and the operation time can be determined according to the water quality of the effluent of the membrane stack 10, in the daily use process of the water purification device, if the number of the microorganisms in the effluent exceeds the preset value, the electrolysis module 20 is started, the sterilization condition is monitored in real time, and when the number of the microorganisms in the effluent is detected to be lower than the preset value, the electrolysis module 20 can be closed.
In the process of sterilizing the membrane stack 10 by the electrolysis module 20, the voltage of the membrane stack 10 is cancelled, hypochlorite is prevented from moving towards the positive electrode plate, the sterilization effect is improved, and the energy consumption can be saved.
In short, according to the waterway system 100 of the water purifying apparatus of the embodiment of the present invention, the electrolysis module 20 is disposed at the upstream end of the membrane stack 10, so that the membrane stack 10 can be sterilized intermittently according to actual situations, a large amount of microorganisms are prevented from being grown in the membrane stack 10, and the effluent quality of the water purifying apparatus is improved.
In order to improve the sterilization effect, a plurality of water paths may be provided between the membrane stack 10 and the electrolysis module 20, and the electrolyzed water is introduced into different regions of the membrane stack 10 through different water paths, so as to realize comprehensive and thorough sterilization inside the membrane stack 10. In an optional embodiment, as shown in fig. 1 and 2, two water paths are provided between the membrane stack 10 and the electrolysis module 20, and when the sterilization is started, the two water paths simultaneously convey the electrolyzed water into the membrane stack 10, so that the flow rate of the electrolyzed water in the membrane stack 10 is ensured, and the sterilization effect is improved.
In some embodiments of the present invention, as shown in fig. 2, the membrane stack 10 has a water inlet path 41, and the water inlet path 41 is connected in parallel with the electrolysis module 20, that is, in the normal electrodialysis process of the membrane stack 10, raw water can be supplied into the membrane stack 10 through the water inlet path 41, at this time, the water path in which the electrolysis module 20 is located can be disconnected, and the circuit of the electrolysis module 20 can also be cut off, so that the raw water can be prevented from being continuously introduced into the electrolysis module 20, some dirt in the raw water can be prevented from being deposited on the electrode surface of the electrolysis module 20, and the electrolysis capability of the electrolysis module 20 can be further ensured not to be damaged.
Because the electrolyzed water flowing out of the membrane stack 10 still has residual chlorine which is not used up, in order to reduce the water source waste, the downstream end of the membrane stack 10 is provided with a chlorine removal module 50, the chlorine removal module 50 is connected with the water outlet waterway 42 of the membrane stack 10, and the residual chlorine in the electrolyzed water is eliminated through the chlorine removal module 50, thereby recycling the electrolyzed water. As shown in fig. 1 and 2, the effluent water path 42 of the membrane stack 10 includes a fresh water path 422 and a concentrated water path 421, and in the sterilization process of the membrane stack 10, the fresh water path 422 and the concentrated water path 421 may be respectively connected to the chlorine removal module 50, or the fresh water path 422 and the concentrated water path 421 may be converged and then connected to the chlorine removal module 50, so that the excess hypochlorite in the electrolyzed water may be effectively removed by the chlorine removal module 50, and the residual chlorine content in the recirculated electrolyzed water may be effectively reduced.
Optionally, the chlorine removal module 50 is an activated carbon filter element. The activated carbon filter element can adsorb residual chlorine in the electrolyzed water, and reduce the harm of the residual chlorine to the health of people.
As shown in fig. 1 and 2, the waterway system 100 is further provided with a raw water tank 60, and the raw water tank 60, the electrolysis module 20 and the chlorine removal module 50 are sequentially connected to form a closed loop. In the process of sterilizing the membrane stack 10, the electrolyzed water from the membrane stack 10 can be discharged back to the raw water tank 60 for electrodialysis again, so that the concentration of residual chlorine in the fresh water discharged in the normal electrodialysis process of the membrane stack 10 can be reduced, and the water safety of people is improved.
In order to promote the normal flow of water between the raw water tank 60 and the electrolysis module 20, a water pump 70 is provided between the raw water tank 60 and the electrolysis module 20, and the water pump 70 pumps the water in the raw water tank 60 into the electrolysis module 20 for electrolysis and delivers the electrolyzed water into the membrane stack 10, thereby sterilizing the membrane stack 10.
In the present inventionIn some illustrative embodiments, as shown in FIG. 3, the electrolysis module 20 comprises a titanium ruthenium-coated anode 21 and a titanium sheet cathode 22, wherein the thickness of each of the titanium ruthenium-coated anode 21 and the titanium sheet cathode 22 is between 20 μm and 1000 μm, and the area of each of the titanium ruthenium-coated anode 21 and the titanium sheet cathode 22 is 1cm2-100cm2The interval between the titanium ruthenium-coated anode 21 and the titanium sheet cathode 22 is 0.5mm-20 mm. When the membrane stack 10 is sterilized, the electrolysis module 20 is powered on, the membrane stack 10 is powered off, the electrolytic salt solution containing sodium chloride generates electrolytic water in the electrolytic cell formed by the titanium ruthenium-coated anode 21 and the titanium sheet cathode 22, and the electrolytic water enters the membrane stack 10 to be sterilized under the driving of the water pump 70. It is understood that the composition and specific parameters of the electrolysis module 20 described above are merely exemplary and may be adjusted according to the actual situation.
The method for sterilizing the membrane stack 10 by the electrolysis module 20 of the embodiment of the invention comprises the following steps of controlling the water flow of the electrolysis module 20 to be between 100ml/min and 2000ml/min, controlling the current to be between 0.5A and 20A, and controlling the chlorine concentration of the electrolyzed water to be between 0.5ppm and 10 ppm. Experiments prove that the chlorine-containing concentration in the range has better sterilization effect.
In one embodiment, the flow of water into the electrolysis module 20 is 500ml/min, the current to the electrolysis module 20 is 1A, and the chlorine concentration of the electrolyzed water is 1.5ppm when the incoming water TDS is 120 ppm. The electrolyzed water is divided into two paths, the two paths are respectively introduced into the membrane stack 10 according to the proportion of 1:1, the circulation washing is carried out for 10min, and the membrane stack 10 is sterilized. Before the electrolytic water is introduced, the colony number of the water in the membrane stack 10 is 2.3 ten thousand, and after the membrane stack is washed by the electrolytic water, the colony number content in the membrane stack 10 is 730, namely the sterilization rate of the electrolytic water is 96.8%. Therefore, the regular use of the electrolyzed water for cleaning can effectively reduce the bacteria content in the membrane stack 10.
The water purifying apparatus according to the embodiment of the present invention includes the water path system 100 according to the above-mentioned embodiment, and the water path system 100 according to the embodiment of the present invention has the electrolysis module 20 for intermittently sterilizing the membrane stack, so that the effluent quality of the water path system 100 is ensured, and therefore, the water purifying apparatus according to the embodiment of the present invention also has an advantage of good effluent quality.
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.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A waterway system of water purifying equipment is characterized in that,
stacking the films;
the electrolysis module is arranged at the upstream end of the membrane stack, and electrolyzed water generated by the electrolysis module flows into the membrane stack to sterilize the membrane stack;
and the raw water waterway is connected with the inlet end of the electrolysis module.
2. The waterway system of a water purifying device of claim 1, wherein a plurality of waterways are provided between the electrolysis module and the membrane stack.
3. The waterway system of a water purification unit of claim 1, wherein the membrane stack has a water inlet waterway disposed in parallel with the electrolysis module.
4. The waterway system of a water purifying device of claim 1, wherein the membrane stack has an effluent waterway, and a chlorine removal module is disposed at a downstream end of the membrane stack and connected to the effluent waterway.
5. The waterway system of a water purifying device of claim 4, wherein the dechlorination module is an activated carbon filter element.
6. The waterway system of a water purifying apparatus according to claim 4, further comprising a raw water tank, wherein the raw water tank, the electrolysis module and the chlorine removal module are connected in sequence and form a closed loop.
7. The waterway system of a water purifying device of claim 6, wherein a water pump is disposed between the raw water tank and the electrolysis module.
8. The waterway system of a water purifying device of claim 1, wherein the electrolysis module comprises a titanium ruthenium-coated anode and a titanium sheet cathode, and the thickness of the titanium ruthenium-coated anode and the thickness of the titanium sheet cathode are both 20 μm-1000 μm, and the area of the titanium ruthenium-coated anode and the area of the titanium sheet cathode are both 1cm2-100cm2And the spacing distance between the titanium ruthenium-coated anode and the titanium sheet cathode is 0.5mm-20 mm.
9. The waterway system of a water purifying device of claim 8, wherein the method for sterilizing the membrane stack by the electrolysis module is that the water flow of the electrolysis module is controlled between 100ml/min and 2000ml/min, the current is controlled between 0.5A and 20A, and the chlorine concentration of the electrolyzed water is controlled between 0.5ppm and 10 ppm.
10. A water purification apparatus, comprising a waterway system of any one of claims 1-9.
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