CN109205744A - A kind of the flowing electrode Electro Sorb process for purifying water and water purifier of low wastewater rate - Google Patents
A kind of the flowing electrode Electro Sorb process for purifying water and water purifier of low wastewater rate Download PDFInfo
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- CN109205744A CN109205744A CN201811379239.9A CN201811379239A CN109205744A CN 109205744 A CN109205744 A CN 109205744A CN 201811379239 A CN201811379239 A CN 201811379239A CN 109205744 A CN109205744 A CN 109205744A
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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
- C02F1/46—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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- 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
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Abstract
The present invention provides the flowing electrode Electro Sorb process for purifying water and water purifier of a kind of low wastewater rate, the following steps are included: filtered tap water, desalting processing is carried out by flowing electrode electric adsorption module and electrodialysis desorption module, it handles to obtain drinking water by the flowing electrode electric adsorption module, obtains the high waste water of salt content by the electrodialysis desorption module.The flowing electrode Electro Sorb process for purifying water of the low wastewater rate, wastewater rate 5%, good water rate is up to 95%, while water purification, also achieves water-saving, can retain the mineral ion beneficial to human body (calcium, magnesium, potassium), produces water and belongs to healthy water.Using flowing electrode Electro Sorb technology, the fixed electrode of traditional CDI is changed into flowing electrode, to improve adsorption capacity, and use electrodialytic technique as the flowing mesohalobic desalination regeneration unit of electrode, the electrode moment is flowed in unsaturated state, it therefore, there is no need to the volume of very big flowing electrode.
Description
Technical field
The present invention relates to water-treatment technology fields, net in particular to a kind of flowing electrode Electro Sorb of low wastewater rate
Water method.
Background technique
China is the poor country of water resource, and per capita water resource is only the 1/4 of world's per capita share.It is water-saving for China
There is especially important meaning.However, the pursuit with the multiple and people of water contamination accident to healthy living, reverse osmosis purified water
Machine initially enters more and more families.Harmful substance and impurity, water purification efficiency height, which can be effectively removed, becomes reverse osmosis water purifier
Universal attraction.Reverse osmosis water purifier is gained the name with purifying ultimate attainment.Other than hydrone, all pollutants, germ in water, very
It is also all filtered as all minerals.It is discharged after purification, is exactly the pure water described in us.But household is anti-
The wastewater rate of infiltration water purifier is up to 50% or more, and good water rate is lower than 50%.So high wastewater rate, it is poor for water resource
It is a kind of profligacy of water resource for China, for each family, and a kind of long-term financial burden.It is protecting
While shield water resource is not contaminated, we should more advocate thriftiness with the habit of water and the water purifier skill of the low waste water ratio of development
Art.
Current commercially available water purifier, mainly based on reverse osmosis, but the maximum feature of reverse osmosis water purifier is exactly
Salt rejection rate is excessively high and non-adjustable, and production water is excessively clean, produces the water quality of water close to pure water, without containing the minerals beneficial to human body
Ion (calcium, magnesium, potassium).Why the water containing appropriate mineral ion is drunk? in its book, " water is water nutrition expert Li Fuxing
Medicine should be malicious " road Zhong Zengti: minerals are free of containing minerals ratio in water.The mineral contained in these water for example calcium, magnesium, potassium from
Son etc., they are the important composition substances in bone, tooth, parenchima, muscle, blood and nerve cell.And in the market often
Such as Chef Kang mineral water seen is to add trace mineral into pure water, to supplement the mineral being lost in pure hydraulic art
Matter ingredient meets consumer and wishes the needs of drinking water while also can add to part minerals.Therefore, it is intended that water purifier
Production water, also retain the suitable pair of beneficial mineral ion of human body.
Electro Sorb desalination (CDI) technology has been widely used in the desalination of industry, but on household water-purifying machine
Use it is universal not yet, existing pertinent literature and patent have relevant description and research to Electro Sorb type water purifier.Such as patent
Number for CN201320312190.1, in entitled " a kind of automatically cleaning Electro Sorb water purification installation ", using activated carbon fibre as
Fixed electrode, the adsorption and desorption of electrode are to belong to the same chamber and runner, therefore belong in operation intermittent
The operation of discontinuous type, the problem of not being able to solve continuous absorption and cyclic regeneration.For another example Patent No.
It is to be filtered by the way of being powered or powering off to Electro Sorb in CN200720193459.3, entitled " electro-adsorption demineralization water purifier "
Core carries out adsorption and desorption operation, the desalination of tap water and the regeneration of filter core is realized, due to the adsorption capacity of electric adsorption filter element
It is limited, therefore the adsorption and desorption operation of filter core can be very frequent, the adsorption capacity for not being able to solve electric adsorption filter element is relatively low
The problem of.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of flowing electrode Electro Sorb process for purifying water of low wastewater rate, existing to solve
There is process for purifying water that cannot continuously adsorb the problem high with the high wastewater rate of cyclic regeneration, reverse osmosis water purifier, and there is also obtain
The beneficial mineral ion content of the water arrived is low, mostly pure water the problem of, the flowing electrode Electro Sorb of the low wastewater rate
Process for purifying water, wastewater rate 5%, good water rate is up to 95%, while water purification, also achieves water-saving, can retain to human body
Beneficial mineral ion (calcium, magnesium, potassium) produces water and belongs to healthy water.Using flowing electrode Electro Sorb technology, by traditional CDI's
Fixed electrode is changed into flowing electrode, to improve adsorption capacity, and uses electrodialytic technique as salt water in flowing electrode
Desalination regeneration unit, the flowing electrode moment is in unsaturated state, therefore, there is no need to the volume of very big flowing electrode.
The second object of the present invention is to provide water purifier described in one kind, to solve traditional Electro Sorb (CDI) desalination skill
The absorption of art with regeneration is completed in a salting out tank, and desalination processes cannot be carried out continuously, intermittent absorption repeatedly and
Regeneration, causes system operatio pretty troublesome, and the runner of concentrated water and fresh water is the same runner, this mode of operation is difficult to realize
The problem of rate of recovery of high water, the water purifier use electrodialytic technique to make using flowing electrode as absorption water purification unit
To flow the mesohalobic desalination regeneration unit of electrode slurries, absorption water purification unit and desalination regeneration unit are separated while being carried out,
It may be implemented continuously to adsorb and regenerate.Using flowing electrode Electro Sorb technology, the fixed electrode of traditional CDI is changed into flowing
Electrode to improve adsorption capacity, and uses electrodialytic technique as the flowing mesohalobic desalination regeneration unit of electrode, flowing electricity
The pole moment is in unsaturated state, therefore, there is no need to the volume of very big flowing electrode.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of flowing electrode Electro Sorb process for purifying water of low wastewater rate, comprising the following steps:
Filtered tap water carries out desalting processing by flowing electrode electric adsorption module and electrodialysis desorption module,
It handles to obtain drinking water by the flowing electrode electric adsorption module, obtains salt content height by the electrodialysis desorption module
Waste water.
Preferably, the flowing electrode Electro Sorb process for purifying water of the low wastewater rate, specifically includes the following steps:
Filtered tap water carries out desalting processing by flowing electrode electric adsorption module and electrodialysis desorption module,
It flows electrode slurries and enters the flowing electrode electric adsorption module, after adsorbing zwitterion, flowing out stream moving electrode Electro Sorb mould
Block, at the same time, flowing electrode slurries enter electrodialysis desorption module, are desorbed after zwitterion, outflow electrodialysis desorption
Attached module is handled to obtain drinking water, be obtained by the electrodialysis desorption module by the flowing electrode electric adsorption module
The high waste water of salt content；It is furthermore preferred that the flowing electrode slurries are stored in flowing electrode storage tank.
Preferably, the flowing electrode slurries include electrode and fluid；
The flow of flowing electrode slurries in the flowing electrode electric adsorption module is 280-285mL/min, electrodialysis solution
The flow of flowing electrode slurries in adsorption module is 150-160mL/min.
It is furthermore preferred that the mass ratio of the electrode and the fluid is 2-3:7-8, it is more selected as 2:8；
It is furthermore preferred that the electrode is carbon electrode, it is furthermore preferred that the carbon electrode includes graphene, acetylene black and activity
One of charcoal is several, and still more preferably, the carbon electrode is made of acetylene black and active carbon, still more preferably
, the mass ratio of the active carbon and the acetylene black are as follows: 65-70:30-35.
It is furthermore preferred that the partial size of the carbon electrode is 170-270 mesh, more preferably 200-230 mesh, still more preferably for
200 mesh.
It is furthermore preferred that the fluid is water, it is furthermore preferred that the wet concentration is from tap water, drinking water, pure water, deionization
One of water or several combinations.
Preferably, described by the tap water for flowing electrode electric adsorption module and by the electrodialysis desorption mould
The tap water mass ratio of block is 95-97:3-5, and preferred mass ratio is 95:5.
Preferably, the filtering carries out coarse filtration using PP cotton and/or active carbon.
Preferably, the concentration of the total dissolved solidss of the drinking water is 50-70mg/L.
Preferably, in the flowing electrode electric adsorption module, apply the constant voltage of 1.2V-1.4V between anode and cathode.
Preferably, apply the constant voltage of 1.8V-2.0V in the electrodialysis desorption module between anode and cathode.
Preferably, it is provided with pairs of zwitterion selectivity exchange membrane in the flowing electrode electric adsorption module, it is more excellent
Choosing, it is still more preferably 10-30 pairs that the quantity of the zwitterion selectivity exchange membrane, which is 5-50 pairs,.
Preferably, pairs of zwitterion selectivity exchange membrane is provided in the electrodialysis desorption module, more preferably
, it is still more preferably 2-6 pairs that the quantity of the zwitterion selectivity exchange membrane, which is 1-10 pairs,.
A kind of water purifier, suitable for the flowing electrode Electro Sorb process for purifying water of the low wastewater rate, including pretreatment dress
It sets, tap water storage device, flowing electrode storage tank, flowing electrode electric adsorption module, electrodialysis desorption module, the first direct current
Source, the second DC power supply and wastewater trough；
It is described flowing electrode storage tank liquid outlet respectively with it is described flowing electrode Electro Sorb mould inlet and electrodialysis solution
The inlet of adsorption module is connected, and the inlet of the flowing electrode storage tank flows going out for electrode Electro Sorb mould with described respectively
Liquid mouth is connected with the liquid outlet of electrodialysis desorption module, it is preferred that the flowing electrode storage tank liquid outlet is provided with pump；
It is described flowing electrode storage tank liquid outlet respectively with it is described flowing electrode Electro Sorb mould inlet and electrodialysis solution
The inlet of adsorption module is connected, it is preferred that the flowing electrode storage tank liquid outlet is provided with pump；
The flowing electrode electric adsorption module include cathode and anode and be arranged in it is several right between the cathode and anode
The cathode of zwitterion selectivity exchange membrane, the flowing electrode electric adsorption module is connected with the cathode of first DC power supply
It connects, anode is connected with the anode of first DC power supply；
The electrodialysis desorption module includes cathode and anode and several pairs of yin being arranged between the cathode and anode
Cation selective exchange membrane, the cathode of the electrodialysis desorption module are connected with the cathode of second DC power supply,
Anode is connected with the anode of second DC power supply；
The water outlet of the electrodialysis desorption module is connect with the wastewater trough；
Preferably, the flowing electrode electric adsorption module is additionally provided with drinking water place outlet.
Compared with prior art, the invention has the benefit that
(1) process for purifying water provided by the present invention solves asking for high wastewater rate (50%) of current reverse osmosis water purifier
Topic.The wastewater rate of flowing electrode Electro Sorb type water purifier of the invention is 5%, and good water rate is up to 95%, while water purification,
It realizes water-saving.
(2) process for purifying water provided by the present invention solves the problems, such as that the salt rejection rate of reverse osmosis water purifier is nonadjustable.At present
Reverse osmosis water purifier salt rejection rate it is substantially stationary, unadjustable, obtained water is almost pure water, without containing beneficial to human body
Mineral ion (calcium, magnesium, potassium), the flowing electrode Electro Sorb type water purifier of use, when flowing electrode electric adsorption module and electric osmose
It, can be real by adjusting flow velocity of intaking when the film of zwitterion selectivity exchange membrane is certain to quantity in analysis desorption module
The change of existing salt rejection rate, can retain the mineral ion beneficial to human body (calcium, magnesium, potassium), produce water and belong to healthy water.
(3) water purifier provided by the present invention, solve traditional Electro Sorb (CDI) desalting technology cannot continuous desalination
Problem.The absorption of traditional Electro Sorb (CDI) desalting technology with regeneration is completed in a salting out tank, and desalination processes cannot be continuous
It carries out, intermittent absorption and regeneration repeatedly causes system operatio pretty troublesome, and the runner of concentrated water and fresh water is same
Runner, this mode of operation are difficult to realize the rate of recovery of high water.Flowing electrode Electro Sorb type water purifier of the invention utilizes stream
Moving electrode uses electrodialytic technique to be used as the flowing mesohalobic desalination regeneration unit of electrode slurries as absorption water purification unit,
Absorption water purification unit and desalination regeneration unit are separated while being carried out, may be implemented continuously to adsorb and regenerate.
(4) water purifier provided by the present invention, the adsorption capacity for solving traditional Electro Sorb (CDI) desalting technology is low, body
The fixed electrode of traditional CDI is changed into flowing electrode by the huge problem of product, used flowing electrode Electro Sorb technology,
To improve adsorption capacity, and electrodialytic technique is used as the flowing mesohalobic desalination regeneration unit of electrode, when flowing electrode
It carves in unsaturated state, therefore does not need the volume of very big flowing electrode.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the operation principle schematic diagram of flowing electrode Electro Sorb type water purifier provided in an embodiment of the present invention；
Fig. 2 is the adsorption and desorption schematic illustration of flowing electrode Electro Sorb provided in an embodiment of the present invention；
Fig. 3 is that the TDS of the production water for the flowing electrode Electro Sorb type water purifier that the embodiment of the present invention 1 (northern water quality) provides becomes
Change；
Fig. 4 is that the TDS of the production water for the flowing electrode Electro Sorb type water purifier that the embodiment of the present invention 2 (southern water quality) provides becomes
Change.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with the drawings and specific embodiments, but
Be it will be understood to those of skill in the art that it is following described embodiments are some of the embodiments of the present invention, rather than it is whole
Embodiment is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.The person that is not specified actual conditions in embodiment, carries out according to conventional conditions or manufacturer's recommended conditions.Agents useful for same
Or production firm person is not specified in instrument, is the conventional products that can be obtained by commercially available purchase.
In the present invention, the working principle of electrode Electro Sorb type water purifier is flowed as shown in Figure 1, whole flow process is divided into two big moulds
Block: flowing electrode electric adsorption module and electrodialysis desorption module.Tap water carries out thick mistake firstly the need of by PP cotton, active carbon
It filters off and removes particulate matter therein, chlorine residue, pretreatment tap water is obtained after heavy metal, pretreatment tap water enters flowing electrode electricity and inhales
Attached module and electrodialysis desorption module carry out desalination, and the volume ratio into the water of the two modules is 95-97:3-5, preferably
Mass ratio is 95:5, and the pretreatment tap water of 90%-95% obtains total dissolved solidss after flowing electrode electric adsorption module
(TDS) be 50-70mg/L healthy drinking water, and the pretreatment tap water of 5%-10% by electrodialysis desorption module it
Afterwards, the high waste water of salt content is obtained, is directly discharged.Apply 1.2V- between anode and cathode in flowing electrode electric adsorption module
The constant voltage of 1.4V, there is no liberation of hydrogen oxygen evolution reactions for anode and cathode at this time；Apply between anode and cathode in electrodialysis desorption module
The constant voltage of 1.8V-2.0V, Oxygen anodic evolution, the aobvious acidity of anode region liquid, cathodic region liberation of hydrogen, cathodic region liquid show alkalinity at this time,
5% pretreatment tap water enters from anode region, flows through discharge after cathode chamber, the acidic liquid of anode region is to the faint of cathodic region
Fouling can play the role of descaling rinsing, guarantee the stable operation of electrodialysis plant.Flow yin-yang in electrode electric adsorption module
The film of ion selectivity exchange membrane is 10-30 pairs to quantity, and film is to quantity practical production water flow according to needed for water purifier
And it is increased and decreased；The film of zwitterion selectivity exchange membrane is 2-6 pairs to quantity in electrodialysis desorption module, and film can to quantity
It is increased and decreased with the practical production water flow according to needed for water purifier.
Electrode slurries are flowed, is mixed by the active carbon powder of 200 mesh and acetylene black and is constituted in tap water, m (active carbon):
M (acetylene black)=65-70:30-35, the electric conductivity for being added to improve flowing electrode of acetylene black, flows electrode slurries
Solid-liquid proportion be m (Gu): m (water)=2-3:7-8, preferably 2:8.
Flowing electrode slurries in flowing electrode storage tank are pumped into flowing electrode electric adsorption module, after adsorbing zwitterion,
Flowing out stream moving electrode electric adsorption module, back to flowing electrode storage tank；At the same time, the flowing electrode slurry in electrode storage tank is flowed
Liquid pump enters electrodialysis desorption module, is desorbed after zwitterion, flows out electrodialysis desorption module, back to flowing electrode storage
Slot, flowing electrode slurries are regenerated.
Fig. 2 is the adsorption and desorption principle for flowing electrode Electro Sorb: in flowing electrode electric adsorption module, anode chamber
Micro activated carbon particle, when in flow process with positive contact, the electrons on micro activated carbon particle are transferred on anode plate, are lived at this time
Property carbon particle is positively charged, and under the action of electric field, the anion of anode chamber is moved to from diluting compartment, can be adsorbed on positively charged
On micro activated carbon particle, anion is carried over anode region and enters flowing electrode storage tank with the flowing of flowing electrode plasma-based；Together
Reason, the micro activated carbon particle of cathode chamber, when in flow process with cathode contacts, it is micro- that the electrons on cathode plate are transferred to active carbon
On grain, micro activated carbon particle is negatively charged at this time, and under the action of electric field, the cation of cathode chamber is moved to from diluting compartment, can be inhaled
It is attached on electronegative micro activated carbon particle, cation is carried over cathodic region and enters and flow with the flowing of flowing electrode plasma-based
Electrode storage tank.In flowing electrode storage tank, positively charged micro activated carbon particle and electronegative micro activated carbon particle are sent out due to contact
The transfer of raw electronics, so that the micro activated carbon particle of two kinds of electrical property becomes common electropositive particle due to charge neutrality,
In this process, zwitterion can also reach in the aqueous solution in plasma-based from being desorbed on micro activated carbon particle.These yin-yang from
Son can move to electrodialytic pole room from flowing electrode slurries and obtain flowing electrode slurries in electrodialysis desorption module
To regeneration.
Embodiment 1
Tap water removes particulate matter therein, chlorine residue firstly the need of carrying out coarse filtration by PP cotton, active carbon, after heavy metal
Obtain pretreatment tap water.Electrode slurries are flowed, is mixed by the active carbon powder of 200 mesh and acetylene black and is constituted in tap water, m
(active carbon): m (acetylene black)=70%:30%, flow electrode slurries solid-liquid proportion be m (Gu): m (water)=2:8, in experiment
The volume for flowing electrode slurries is 600mL.
It is tested according to the working principle for flowing electrode Electro Sorb type water purifier in Fig. 2: flowing electrode electric adsorption module
The film of middle zwitterion selectivity exchange membrane is 20 pairs to quantity, zwitterion selectivity exchange membrane in electrodialysis desorption module
Film to quantity be 4 pairs.Pretreatment tap water enters flowing electrode electric adsorption module and electrodialysis desorption module carries out desalination,
Volume ratio into the water of the two modules is 95%:5%, and 95% pretreatment tap water is by flowing electrode Electro Sorb mould
Block, flow 570mL/min obtain the healthy drinking water that total dissolved solidss (TDS) is 50-70mg/L；And 5% pretreatment from
Water passes through electrodialysis desorption module, and flow 30mL/min obtains the high waste water of salt content, directly discharged.Flowing
Apply the constant voltage of 1.3V in electrode electric adsorption module between anode and cathode, applies between anode and cathode in electrodialysis desorption module
The constant voltage of 2.0V.The flow for flowing the flowing electrode slurries in electrode electric adsorption module is 285mL/min, electrodialysis desorption
The flow of flowing electrode slurries in module is 150mL/min.
For the higher water quality of TDS of north of China, select the tap water of Beijing Huairou as experimental subjects, water quality indicator
As shown in table 1, TDS 280ppm, after flowing electrode Electro Sorb type water purifier, TDS becomes 55-63ppm, remains appropriate
Mineral ion, be suitable for human body and drink.When obtaining the drinkable fresh water of 5L, the volume of the concentrated water of discharge is about
0.265L, wastewater rate are only 5%.
Fig. 3 is the TDS variation for flowing the production water of electrode Electro Sorb type water purifier, as can be seen from Figure 2, water purification function of the invention
Enough meet stable, the continuous requirement for producing water.
1 Beijing Huairou tap water quality situation of table and water purifier produce regimen condition
| Total solid salt content (TDS), ppm | Conductivity, μ S/cm | pH | |
| Huairou tap water | 280 | 558.5 | 7.4 |
| Water purifier produces water | 58-67 | 115-132 | 7.2 |
Embodiment 2
Tap water removes particulate matter therein, chlorine residue firstly the need of carrying out coarse filtration by PP cotton, active carbon, after heavy metal
Obtain pretreatment tap water.Electrode slurries are flowed, is mixed by the active carbon powder of 230 mesh and acetylene black and is constituted in tap water, m
(active carbon): m (acetylene black)=65%:35%, flow electrode slurries solid-liquid proportion be m (Gu): m (water)=3:7, in experiment
The volume for flowing electrode slurries is 600mL.
It is tested according to the working principle for flowing electrode Electro Sorb type water purifier in Fig. 2: flowing electrode electric adsorption module
The film of middle zwitterion selectivity exchange membrane is 30 pairs to quantity, zwitterion selectivity exchange membrane in electrodialysis desorption module
Film to quantity be 6 pairs.Pretreatment tap water enters flowing electrode electric adsorption module and electrodialysis desorption module carries out desalination,
Volume ratio into the water of the two modules is 95%:5%, and 95% pretreatment tap water is by flowing electrode Electro Sorb mould
Block, flow 950mL/min obtain the healthy drinking water that total dissolved solidss (TDS) is 50-70mg/L；And 5% pretreatment from
Water passes through electrodialysis desorption module, and flow 50mL/min obtains the high waste water of salt content, directly discharged.Flowing
Apply the constant voltage of 1.4V in electrode electric adsorption module between anode and cathode, applies between anode and cathode in electrodialysis desorption module
The constant voltage of 2.0V.The flow for flowing the flowing electrode slurries in electrode electric adsorption module is 285mL/min, electrodialysis desorption
The flow of flowing electrode slurries in module is 150mL/min.
For the lower water quality of TDS of southern china, select the tap water of Zhanjiang as experimental subjects, water quality indicator
As shown in table 2, TDS 175ppm, after flowing electrode Electro Sorb type water purifier, TDS becomes 52-68ppm, remains appropriate
Mineral ion, be suitable for human body and drink.When obtaining the drinkable fresh water of 10L, the volume of the concentrated water of discharge is about
0.53L, wastewater rate are only 5%.
2 Zhanjiang tap water quality situation of table and water purifier produce regimen condition
| Total solid salt content (TDS), ppm | Conductivity, μ S/cm | pH | |
| Zhanjiang tap water | 175 | 345 | 7.3 |
| Water purifier produces water | 52-68 | 101-133 | 7.1 |
Compared with the wastewater rate of 50% water of the prior art, flowing electrode Electro Sorb type process for purifying water provided herein/
The wastewater rate of water purifier is 5%, and good water rate is up to 95%, while water purification, also achieves water-saving.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that the above various embodiments is only used
To illustrate technical solution of the present invention, rather than its limitations；Those skilled in the art should understand that: without departing substantially from this hair
It in the case where bright spirit and scope, is possible to modify the technical solutions described in the foregoing embodiments, or to wherein
Some or all of technical characteristic is equivalently replaced；And these are modified or replaceed, and do not make the essence of corresponding technical solution
It departs from the scope of the technical solutions of the embodiments of the present invention；It is, therefore, intended that in the following claims including belonging to the present invention
All these substitutions and modifications in range.
Claims (10)
1. a kind of flowing electrode Electro Sorb process for purifying water of low wastewater rate, which comprises the following steps:
Filtered tap water carries out desalting processing by flowing electrode electric adsorption module and electrodialysis desorption module, passes through
The flowing electrode electric adsorption module handles to obtain drinking water, obtains high useless of salt content by the electrodialysis desorption module
Water.
2. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that specifically include
Following steps:
Filtered tap water carries out desalting processing, flowing by flowing electrode electric adsorption module and electrodialysis desorption module
Electrode slurries enter the flowing electrode electric adsorption module, after adsorbing zwitterion, flowing out stream moving electrode electric adsorption module, with
This flows electrode slurries and enters electrodialysis desorption module, be desorbed after zwitterion, flow out electrodialysis desorption mould simultaneously
Block, handles to obtain drinking water by the flowing electrode electric adsorption module, obtains saliferous by the electrodialysis desorption module
Measure high waste water；
Preferably, the flow of the flowing electrode slurries in the flowing electrode electric adsorption module is 280-285mL/min, electrodialysis
The flow of flowing electrode slurries in desorption module is 150-160mL/min；
Preferably, the flowing electrode slurries are stored in flowing electrode storage tank.
3. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 2, which is characterized in that the flowing
Electrode slurries include electrode and fluid；
Preferably, the mass ratio of the electrode and the fluid is 2-3:7-8, is more selected as 2:8；
Preferably, the electrode is carbon electrode, it is furthermore preferred that the carbon electrode includes in graphene, acetylene black and active carbon
One or several kinds, still more preferably, the carbon electrode are made of acetylene black and active carbon, still more preferably, institute
State the mass ratio of active carbon Yu the acetylene black are as follows: 65-70:30-35；
Preferably, the partial size of the carbon electrode is 170-270 mesh, more preferably 200-230 mesh, is still more preferably 200 mesh；
Preferably, the fluid is water, it is furthermore preferred that the wet concentration is from tap water, drinking water, pure water, deionized water
One or several kinds of combinations.
4. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that the process
The tap water of the flowing electrode electric adsorption module and the tap water mass ratio Jing Guo the electrodialysis desorption module are 95-
97:3-5, preferred mass ratio are 95:5.
5. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that the filtering
Coarse filtration is carried out using PP cotton and/or active carbon.
6. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that described to drink
The concentration of the total dissolved solidss of water is 50-70mg/L.
7. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that the flowing
In electrode electric adsorption module, apply the constant voltage of 1.2V-1.4V between anode and cathode.
8. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that the electric osmose
Analyse the constant voltage for applying 1.8V-2.0V in desorption module between anode and cathode.
9. the flowing electrode Electro Sorb process for purifying water of low wastewater rate according to claim 1, which is characterized in that the flowing
Pairs of zwitterion selectivity exchange membrane is provided in electrode electric adsorption module, it is preferred that the zwitterion selects sexual intercourse
The quantity for changing film is 5-50 pairs, more preferably 10-30 pairs；
And/or；
Pairs of zwitterion selectivity exchange membrane is provided in the electrodialysis desorption module, it is preferred that the yin-yang from
The quantity of sub- selectivity exchange membrane is 1-10 pairs, more preferably 2-6 pairs.
10. a kind of water purifier, the flowing electrode Electro Sorb water purification side suitable for the described in any item low wastewater rates of claim 1-9
Method, which is characterized in that including pretreatment unit, tap water storage device, flowing electrode storage tank, flowing electrode electric adsorption module,
Electrodialysis desorption module, the first DC power supply, the second DC power supply and wastewater trough；
The water outlet of the pretreatment unit is connected with the water inlet of the tap water storage device；The tap water storage dress
The water outlet and the water inlet of the flowing electrode electric adsorption module and the water inlet of the electrodialysis desorption module set are distinguished
Connection；
It is described flowing electrode storage tank liquid outlet respectively with it is described flowing electrode Electro Sorb mould inlet and electrodialysis desorption
The inlet of module is connected, it is described flowing electrode storage tank inlet respectively with it is described flowing electrode Electro Sorb mould liquid outlet
It is connected with the liquid outlet of electrodialysis desorption module, it is preferred that the flowing electrode storage tank liquid outlet is provided with pump；
The flowing electrode electric adsorption module includes yin in cathode and anode and be arranged between the cathode and anode several pairs
The cathode of cation selective exchange membrane, the flowing electrode electric adsorption module is connected with the cathode of first DC power supply
It connects, anode is connected with the anode of first DC power supply；
The electrodialysis desorption module include cathode and anode and several pairs of yin-yang being arranged between the cathode and anode from
Sub- selectivity exchange membrane, the cathode of the electrodialysis desorption module are connected with the cathode of second DC power supply, anode
It is connected with the anode of second DC power supply；
The water outlet of the electrodialysis desorption module is connect with the wastewater trough；
Preferably, the flowing electrode electric adsorption module is additionally provided with drinking water place outlet.
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| CN111689555A (en) * | 2019-03-15 | 2020-09-22 | 国家能源投资集团有限责任公司 | Salt production method and device and salt-containing wastewater treatment system |
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| CN114230057A (en) * | 2022-01-10 | 2022-03-25 | 南京壹净电器科技有限公司 | Water purification method and system with mineral substance adding function |
| CN115094246A (en) * | 2022-06-22 | 2022-09-23 | 武汉大学 | Continuous electrochemical lithium extraction system based on flow electrode |
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