CN204625269U - There is the tap water electrolysis reactor of self-purification function - Google Patents

There is the tap water electrolysis reactor of self-purification function Download PDF

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Publication number
CN204625269U
CN204625269U CN201520116100.0U CN201520116100U CN204625269U CN 204625269 U CN204625269 U CN 204625269U CN 201520116100 U CN201520116100 U CN 201520116100U CN 204625269 U CN204625269 U CN 204625269U
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electrode
self
water
purification function
tap water
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杨小峰
冯彦东
赵欣乔
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SHAANXI CHANGLING ELECTRONIC TECHNOLOGY Co Ltd
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SHAANXI CHANGLING ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

The utility model provides a kind of tap water electrolysis reactor with self-purification function, and it comprises reaction electrode assembly, reactor shell assembly, also comprises rinsing module, controller; Wherein, electrode assemblie is answered to be arranged on the inside of reactor shell assembly; Controller is connected with automatically controlled valve with the flushing Link Port of rinsing module respectively, is connected with the electrode terminal of Time Controller with reactor shell assembly; Controller controls reaction electrode assembly) Faradaic current, voltage, polarity of electrode conversion; Control opening or closing of the magnetic valve of automatically controlled valve simultaneously, utilize current to carry out back flushing to reaction electrode assembly.The utility model has electrode conversion and automatic flushing function, the former water of titanium matrix composite electrode pair is adopted to carry out purifying treatment, do not add any chemical additive, remove the pollutents such as the heavy metal in former water, microorganism, increase dissolved oxygen, improve water quality, retain the mineral substance and trace element that are of value to HUMAN HEALTH in former water.

Description

There is the tap water electrolysis reactor of self-purification function
Technical field
The utility model belongs to tap water electrolysis reactor technical field, relates to a kind of without the quick appliance for treating drinking water of the controlled self-purification of barrier film large discharge, is specifically related to a kind of tap water electrolysis reactor with self-purification function.
Background technology
Water as a kind of ionogen and solvent, due to wherein containing a large amount of ion, colloid charged group, so can make electrochemically to carry out purifying treatment to it.Its basic purification mechanism is:
Cathodic reduction: 2H 2o+2e -→ 2OH -+ H 2
Anodic oxidation: 2H 2o-4e -→ 4H ++ O 2
2Cl --2e -→Cl 2
CL 2there is disproportionation reaction:
Cl 2+H 2O→HClO+HCl
Owing to adopting iron-based or other electrode to carry out electrolysis treatment, electrode reaction also produces with other corresponding product, as the dissolving etc. of iron electrode, variant because electrode materials is different.The O that electrolytic reaction produces 2have the effect of the growth suppressing anaerobism quasi-microorganism, HClO has stronger sterilization algae removal ability, can be used for sterilization and disinfection; Part O 2the water-soluble dissolved oxygen content adding product water.Such as, for iron electrode, also following reaction can be there is:
Fe-2e -→Fe 2+
Fe 2+-e -→Fe 3+
Fe 3++3OH -→Fe(OH)3↓
It is common at present that to utilize the technique of electrolysis process process water to mainly contain following two kinds: one be that utilize can sacrificial anode, namely the electrolyzer that the metal electrode such as graphite, iron, stainless steel is made is widely used in sewage treatment area, the effects such as flocculation, aeration can be played, the indexs such as the chemical oxygen demand (COD) (referred to as " COD ") of effective reduction sewage and turbidity, and have the effect of sterilization and disinfection.But separate out in electrolytic reaction due to anode or dissolve, and bulk treatment selectivity is low, and be not suitable for direct drinking water field.Two is utilize precious metal noble electrode to make septate Wastewater treatment groove, and its product is called electrolyzed water machine more, and its negative electrode produces alkaline water, and anode produces sour water, and acid-basicity water separates by centre semipermeable membrane, then and draws respectively for different purposes.Owing to requiring high, price to water purification electrolysis electrode, electrolyzed water machine is used for family's low capacity and produces function water, and is also not exclusively direct drinking water.
In the prior art, electrode conversion and automatic flushing function is not found yet.
Utility model content
The utility model adopts electrochemical principle, the former water in titanium matrix composite electrode, titanium-based noble metal coated materials layer electrode or precious metal (as platinum) electrode pair specific indexes is adopted to carry out purifying treatment, do not add any chemical additive, remove the pollutents such as the heavy metal in former water, microorganism, increase dissolved oxygen, improve water quality, retain the mineral substance and trace element that are of value to HUMAN HEALTH in former water, increase simultaneously and there is electrode conversion and pre-washing function.Concrete technical scheme is:
There is the tap water electrolysis reactor of self-purification function, comprise reaction electrode assembly (1), reactor shell assembly (2), it is characterized in that:
Also comprise rinsing module (3), controller (4); Wherein,
Described reaction electrode assembly (1) comprises the reaction electrode (5), electrode permanent seat (6) and the electrode terminal (8) that are connected successively;
Described reactor shell assembly (2) comprises housing (9), top cover (10), water-in pipeline (11), water outlet pipeline (12), rinses Link Port (13); Wherein, described top cover (10) removably covers on described housing (9), and described water outlet pipeline (12), electrode terminal (8) are each passed through described top cover (10);
Described rinsing module (3) comprises both connected automatically controlled valves (14) and wash-down water outlet (15);
Described reaction electrode assembly (1) is arranged on the inside of described reactor shell assembly (2); Described controller (4) is connected with described automatically controlled valve (14) with the described flushing Link Port (13) of described rinsing module (3) respectively, and described controller (4) is connected with the described electrode terminal (8) of described reactor shell assembly (2) simultaneously;
Described controller (4) controls the Faradaic current of described reaction electrode assembly (1), voltage, polarity of electrode conversion; Control opening or closing of the magnetic valve of described automatically controlled valve (14) simultaneously, utilize current to carry out back flushing to described reaction electrode assembly (1);
The bottom of described housing (9) is connected with described rinsing module (3) with described water-in pipeline (11);
Insulated enclosure between described top cover (10) and described electrode terminal (8), seals between described water outlet pipeline (12) and described top cover (10).
Further, described controller (4) comprises constant-current voltage-stabilizing DC power supplier (16), polarity of electrode modular converter (17), back flushing control module (18); Wherein, described constant-current voltage-stabilizing DC power supplier (16) can give the power supply of described polarity of electrode modular converter (17) according to water quality situation; Described polarity of electrode modular converter (17) can freely control the polarity of electrode of described reaction electrode assembly (1) by the time pre-set, and passes to described back flushing control module (18) positive and negative electrode change over signal simultaneously; Described back flushing control module (18) can control current when the polarity of electrode conversion of described reaction electrode assembly (1) and carry out back flushing to described reaction electrode assembly (1), and the time of back flushing and the frequency can free settings.
Further, described constant-current voltage-stabilizing DC power supplier (16) can provide and comprise arbitrary value between 0A ~ 30A/-100V ~+100V-DC scope; Polarity of electrode free setting switching time of described back flushing, comprises arbitrary value between 0 ~ 48h scope.
Further, the battery lead plate (19) that described reaction electrode (5) is one or more groups is formed; Often organize and described battery lead plate (19) paired interlocking use and there is positive pole, negative pole; Fixing also isolated insulation is supported by electrode fixed block (7) between described battery lead plate (19).
Further, described reaction electrode (5) is battery lead plate (19) formation described in 2 groups.
Further, can perforate on described battery lead plate (19), perforate can be circular, oval or polygon hole.
Further, the shape of described battery lead plate (19) can be tabular, can also be bar-shaped, tubular, netted, cellular or other can increase the structure of reaction contact area; The tabular of described battery lead plate (19) also can be web plate, microwell plate or porous plate.
Further, the material of described battery lead plate (19) is titanium matrix composite, precious metal material or the material with titanium-based noble metal coated materials layer.
Further, described precious metal material is platinum, ruthenium or iridium.
Further, adopt between described reaction electrode (5) with described electrode permanent seat (6) and to weld or plugging mode is connected; Described electrode permanent seat (6) has the draw-in groove be connected that to adapt with described battery lead plate (19); Described battery lead plate (19) is electrically connected with described electrode column (8) mutually insulated by described draw-in groove again; Described electrode fixed block (7) is insulating material with the material of described draw-in groove.
Further, described water outlet pipeline (12) is also connected with one section of water pipe or union; The material of described reactor shell (9) is transparent polysulfones, UPVC, synthetic glass or metallic substance.
Further, described water-in pipeline (11) can be exchanged mutually with the water (flow) direction of described water outlet pipeline (12), adopt counter-flow water mode, from described water outlet pipeline (12) water inlet, from the water outlet of described water-in pipeline (11).
Basic purification mechanism of the present utility model is:
Cathodic reduction: 2H 2o+2e -→ 2OH -+ H 2
M n++ nOH -→ M (OH) n↓ (insoluble metal ion precipitation),
M n++ ne -→ M ↓ (heavy metal ion releasing);
Anodic oxidation: 2H 2o-4e -→ 4H ++ O 2
2Cl --2e -→Cl 2
CL 2there is disproportionation reaction:
Cl 2+H 2O→HClO+HCl
Wherein, M n+representation metal ion (metal ion such as heavy metal ion and calcium, magnesium, iron is representative).
In the electrolysis of negative electrode due to water, ate electrode creates more OH -ion, OH -the M (OH) generating and be insoluble in water can be reacted with heavy metal ion nprecipitation (metal ion such as a small amount of calcium, magnesium, iron also can generate precipitation of hydroxide and separate out), part torpescence heavy metal ion can obtain electron reduction and become simple substance to separate out; O 2and O, HO free radical generated in reaction process has strong oxidizing property, Organic substance in water of can degrading, HClO has strong degerming ability, can be used for sterilization and disinfection; Part O 2the water-soluble dissolved oxygen content adding product water.Therefore electrolytic reaction can reach the effect of degradation of organic substances, sterilization and disinfection, heavy-metal ion removal, increase oxygen in water.
Electrode is after reaction for some time, and pole plate can adhere to some settlings, and the throw out after electrode pad dipole inversion, depositing, be attached to cathode surface comes off rapidly, is rinsed current simultaneously and washes away.
The technical characterstic that the utility model is useful is: adopt titanium matrix composite electrode, titanium-based noble metal coated materials layer electrode or precious metal (as platinum) electrode, there is electrode materials do not dissolve, self does not react, analyse the low and katalysis of oxygen chlorine evolution potential, wherein provide electric field environment in electrolytic reaction simultaneously, oxidation is provided respectively near positive and negative electrode, reducing environment and acid-base environment, contribute to carrying out the i.e. oxygen of electrochemical reaction, the generation of chlorine, heavy metal reduction is separated out, insoluble metal oxide compound, the electrodeposition substances such as oxyhydroxide, the redox degraded of toxic organics, water clusters is reset and is diminished.The utility model has electrode conversion and pre-washing function simultaneously, can be applicable to the core component device of all kinds of water purifying plant, has processing power strong, long service life, controlled self-purification.
Technique effect of the present utility model is: in temperature one timing, former water in specific indexes is introduced tap water electrolysis reactor, current enter reactor shell through water-in, control electric current, the voltage of current flow rate, the applying of reaction electrode plate, in reactor shell, electrochemical redox reaction can be carried out fast to former water.Because flow rate of water flow in housing is comparatively large and have pole plate as turbulence generator, cancel diaphragm design, can think that current flow pattern is wherein turbulent flow, reaction solution is through fully mixing and reaction, and reaction is uniform.
Through the former water of electrolytic reaction, effectively can remove organic pollutant, the metal such as nickel, arsenic, nonmetal poisonous and harmful ion or group, the pathogenic flora such as intestinal bacteria, streptococcus aureus.
External constant voltage dc source can set the polarity of electrode switching time in 0 ~ 48h, effectively can remove by electrode conversion electrolysis precipitate and throw out that pole plate adheres to, ensures that electrode cleans and reactive behavior.
The utility model can be widely used in all kinds of direct drinking water field.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is controller principle block diagram of the present utility model.
Fig. 3 is reaction electrode unit construction schematic diagram of the present utility model.
Fig. 4 is the structural representation of reaction electrode plate of the present utility model.
Wherein, 1--electrode assemblie, 2--reactor shell assembly, 3--rinsing module, 4--controller, 5--reaction electrode, 6--electrode permanent seat, 7--electrode fixed block, 8--electrode terminal, 9--housing, 10--top cover, 11--water-in pipeline, 12--water outlet pipeline, 13--rinse Link Port, 14--automatically controlled valve, the outlet of 15--wash-down water, 16--constant-current voltage-stabilizing DC power supplier, 17--polarity of electrode modular converter, 18--back flushing control module, 19--battery lead plate.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1, be structural representation of the present utility model.Current trend when the direction of arrow is reactor work in figure, namely general current flow from the top down, also can flow from bottom to top simultaneously.The material of described reactor shell 9 is that transparent polysulfones, UPVC, synthetic glass or metallic substance make, and heat-resistant pressure-resistant, top is connected with top cover 10 by screw thread, sealing-ring.Reaction electrode 5 to be fixed on electrode permanent seat 6 and in reactor shell 9 central position, current are from bottom to top by reactor shell 9, and submergence reaction electrode 5 completely, do turbulent flows wherein.By controller 4 pairs of reaction electrode 5 Power supply and controls; in reactor shell 9, electrochemical redox reaction occurs, and transfer electron polarity in the given time, the precipitate stripping that electrolytic reaction is generated, come off guard electrode; and electrode is rinsed, increase the service life.Reacted water is drawn the utility model by water outlet 12, is connected further filtration, purification with rearmounted miscellaneous equipment.Rinsing Link Port 13 can the automatically controlled valve 14 of connected electromagnetic valve class, under controller 4 controls, opens at transfer electron polarity chron, and stripping, the objectionable impurities that comes off are rinsed and discharged.
By preposition prefabricated purifier, preliminary filtration treatment is carried out to former water, the former water reaching the requirement of the utility model influent quality is introduced the utility model.Water-in pipeline 11 is connected with former water suction culvert, can adopt gluing (PVC-U), hot melt (PPR), welding (metal), loose joint connection or Flange joint according to material type.
Electrode terminal 8, electrode permanent seat 6 are fixed on top cover 10, and electrode terminal 8 exposes external application insulation layer, and electrode terminal 8 is connected with controller 4, and electrode permanent seat 6 is inner at top cover, can fixation reaction electrode assemblie 1; Electrode fixed block 7 guarantees interelectrode distance.
As shown in Figure 2, be controller principle block diagram of the present utility model.External impressed current inputs to constant-current voltage-stabilizing DC power supplier 16, and constant-current voltage-stabilizing DC power supplier 16 provides electric current to reaction electrode 5 by polarity of electrode modular converter 17; Polarity of electrode modular converter 17 controls the conversion of electric current positive and negative electrode; To back flushing control module 18 positive and negative electrode change over signal while polarity of electrode modular converter 17 carries out the conversion of electric current positive and negative electrode, back flushing control module 18 controls automatically controlled valve 14 and opens, and rinses, and flush time can set; Rinse and terminate, automatically controlled valve 14 cuts out.
As shown in figs. 34, be the structural representation of reaction electrode unit construction schematic diagram of the present utility model and reaction electrode plate respectively.Reaction electrode 5 is made up of titanium matrix composite, titanium-based noble metal coated materials layer electrode or precious metal (as platinum) material, positive and negative pole material specification is identical, install by the draw-in groove of battery lead plate 19 and be connected with electrode column 8 in pairs, can install multipair according to water inlet treatment capacity.Battery lead plate 19 shape can be bar-shaped, sheet, tubular, netted, cellular or other shapes, for increasing reaction contact area, can perforate on battery lead plate 19, perforate can be rectangle, circle, hexagonal hole or other shapes, and battery lead plate 19 also can be the material that web plate, microwell plate, porous plate or other surface-area are larger.Reaction electrode 5 can by one group of (1 piece of anode, 1 piece of negative electrode) battery lead plate 19, also can be that 2 groups, 3 groups or multi-group electrode plate 19 are formed.
This example is only a kind of embodiment of the present utility model, as improved the flow pattern in reactor shell further, makes reaction more even, also can adopt the Inlet and outlet water mode of adverse current, namely intake from lower water-in, the water outlet of upper water-out mouth, need to change with engineering design.
Compared with prior art; tap water electrolysis reactor described in the present embodiment has the effect former water in specific indexes being carried out to purifying treatment, degradation of organic substances, minimizing heavy metal, sterilization and disinfection simultaneously; have that treatment capacity is large simultaneously, device structure be simple, without the good feature of barrier film flow pattern, and can be protected electrode by external controlled constant voltage dc source, self-purification operates.

Claims (12)

1. there is the tap water electrolysis reactor of self-purification function, comprise reaction electrode assembly (1), reactor shell assembly (2), it is characterized in that:
Also comprise rinsing module (3), controller (4); Wherein,
Described reaction electrode assembly (1) comprises the reaction electrode (5), electrode permanent seat (6) and the electrode terminal (8) that are connected successively;
Described reactor shell assembly (2) comprises housing (9), top cover (10), water-in pipeline (11), water outlet pipeline (12), rinses Link Port (13); Wherein, described top cover (10) removably covers on described housing (9), and described water outlet pipeline (12), electrode terminal (8) are each passed through described top cover (10);
Described rinsing module (3) comprises both connected automatically controlled valves (14) and wash-down water outlet (15);
Described reaction electrode assembly (1) is arranged on the inside of described reactor shell assembly (2); Described controller (4) is connected with described automatically controlled valve (14) with the described flushing Link Port (13) of described rinsing module (3) respectively, and described controller (4) is connected with the described electrode terminal (8) of described reactor shell assembly (2) simultaneously;
Described controller (4) controls the Faradaic current of described reaction electrode assembly (1), voltage, polarity of electrode conversion; Control opening or closing of the magnetic valve of described automatically controlled valve (14) simultaneously, utilize current to carry out back flushing to described reaction electrode assembly (1);
The bottom of described housing (9) is connected with described rinsing module (3) with described water-in pipeline (11);
Insulated enclosure between described top cover (10) and described electrode terminal (8), seals between described water outlet pipeline (12) and described top cover (10).
2. the tap water electrolysis reactor with self-purification function according to claim 1, is characterized in that: described controller (4) comprises constant-current voltage-stabilizing DC power supplier (16), polarity of electrode modular converter (17), back flushing control module (18); Wherein, described constant-current voltage-stabilizing DC power supplier (16) can give the power supply of described polarity of electrode modular converter (17) according to water quality situation; Described polarity of electrode modular converter (17) can freely control the polarity of electrode of described reaction electrode assembly (1) by the time pre-set, and passes to described back flushing control module (18) positive and negative electrode change over signal simultaneously; Described back flushing control module (18) can control current when the polarity of electrode conversion of described reaction electrode assembly (1) and carry out back flushing to described reaction electrode assembly (1), and the time of back flushing and the frequency can free settings.
3. the tap water electrolysis reactor with self-purification function according to claim 2, is characterized in that: described constant-current voltage-stabilizing DC power supplier (16) can provide and comprise arbitrary value between 0A ~ 30A/-100V ~+100V-DC scope; Polarity of electrode free setting switching time of described back flushing, comprises arbitrary value between 0 ~ 48h scope.
4. the tap water electrolysis reactor with self-purification function according to claim 1, is characterized in that: the battery lead plate (19) that described reaction electrode (5) is one or more groups is formed; Often organize and described battery lead plate (19) paired interlocking use and there is positive pole, negative pole; Fixing also isolated insulation is supported by electrode fixed block (7) between described battery lead plate (19).
5. the tap water electrolysis reactor with self-purification function according to claim 4, is characterized in that: described reaction electrode (5) is battery lead plate (19) formation described in 2 groups.
6. the tap water electrolysis reactor with self-purification function according to claim 4 or 5, is characterized in that: can perforate on described battery lead plate (19), and perforate can be circular, oval or polygon hole.
7. the tap water electrolysis reactor with self-purification function according to claim 6, it is characterized in that: the shape of described battery lead plate (19) can be tabular, can also be bar-shaped, tubular, netted, cellular or other can increase the structure of reaction contact area; The tabular of described battery lead plate (19) also can be web plate, microwell plate or porous plate.
8. the tap water electrolysis reactor with self-purification function according to claim 4,5 or 7, is characterized in that: the material of described battery lead plate (19) is titanium matrix composite, precious metal material or the material with titanium-based noble metal coated materials layer.
9. the tap water electrolysis reactor with self-purification function according to claim 8, is characterized in that: described precious metal material is platinum, ruthenium or iridium.
10. the tap water electrolysis reactor with self-purification function according to claim 4,5,7 or 9, is characterized in that: adopt between described reaction electrode (5) with described electrode permanent seat (6) and to weld or plugging mode is connected; Described electrode permanent seat (6) has the draw-in groove be connected that to adapt with described battery lead plate (19); Described battery lead plate (19) is electrically connected with described electrode terminal (8) mutually insulated by described draw-in groove again; Described electrode fixed block (7) is insulating material with the material of described draw-in groove.
The 11. tap water electrolysis reactors with self-purification function according to claim 10, is characterized in that: described water outlet pipeline (12) is also connected with one section of water pipe or union; The material of described reactor shell (9) is transparent polysulfones, UPVC, synthetic glass or metallic substance.
12. tap water electrolysis reactors with self-purification function according to claim 1,2,3,4,5,7,9 or 11, it is characterized in that: described water-in pipeline (11) can be exchanged mutually with the water (flow) direction of described water outlet pipeline (12), adopt counter-flow water mode, from described water outlet pipeline (12) water inlet, from the water outlet of described water-in pipeline (11).
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104628093A (en) * 2015-02-16 2015-05-20 陕西长岭电子科技有限责任公司 Drinking water electrolytic reactor with self-purifying function
CN107935161A (en) * 2017-12-16 2018-04-20 傲自然成都生物科技有限公司 A kind of bioelectrochemical system and purification method for purifying drinking water
CN107935130A (en) * 2017-12-16 2018-04-20 傲自然成都生物科技有限公司 A kind of electro-chemical systems and purification method for purifying drinking water
CN108002518A (en) * 2017-12-16 2018-05-08 傲自然成都生物科技有限公司 A kind of bioelectrochemical system and purification method for purifying drinking water nitrate
CN108002517A (en) * 2017-12-16 2018-05-08 傲自然成都生物科技有限公司 A kind of bioelectrochemistry coupling system and its purification method for purifying drinking water
CN110799673A (en) * 2017-04-24 2020-02-14 赫勒电解公司 Method for operating a water electrolysis installation

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104628093A (en) * 2015-02-16 2015-05-20 陕西长岭电子科技有限责任公司 Drinking water electrolytic reactor with self-purifying function
US11371153B2 (en) 2017-04-24 2022-06-28 Hoeller Electrolyzer Gmbh Method for operating a water electrolysis device
CN110799673A (en) * 2017-04-24 2020-02-14 赫勒电解公司 Method for operating a water electrolysis installation
CN110799674A (en) * 2017-04-24 2020-02-14 赫勒电解公司 Method for operating a water electrolysis installation
CN110799673B (en) * 2017-04-24 2022-04-15 赫勒电解公司 Method for operating a water electrolysis installation
CN110799674B (en) * 2017-04-24 2022-05-27 赫勒电解公司 Method for operating a water electrolysis installation
US11384442B2 (en) 2017-04-24 2022-07-12 Hoeller Electrolyzer Gmbh Method for operating a water electrolysis device
CN107935130A (en) * 2017-12-16 2018-04-20 傲自然成都生物科技有限公司 A kind of electro-chemical systems and purification method for purifying drinking water
CN108002518A (en) * 2017-12-16 2018-05-08 傲自然成都生物科技有限公司 A kind of bioelectrochemical system and purification method for purifying drinking water nitrate
CN108002517A (en) * 2017-12-16 2018-05-08 傲自然成都生物科技有限公司 A kind of bioelectrochemistry coupling system and its purification method for purifying drinking water
CN107935161A (en) * 2017-12-16 2018-04-20 傲自然成都生物科技有限公司 A kind of bioelectrochemical system and purification method for purifying drinking water
CN108002517B (en) * 2017-12-16 2023-10-24 傲自然成都生物科技有限公司 Bioelectrochemical coupling system for purifying drinking water and purifying method thereof
CN108002518B (en) * 2017-12-16 2023-11-17 傲自然成都生物科技有限公司 Bioelectrochemical system and purification method for purifying nitrate in drinking water
CN107935130B (en) * 2017-12-16 2023-12-15 傲自然成都生物科技有限公司 Electrochemical system for purifying drinking water and purifying method

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