CN106830227A - The membrane capacitance deionizer and processing method of a kind of circular treatment - Google Patents
The membrane capacitance deionizer and processing method of a kind of circular treatment Download PDFInfo
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- CN106830227A CN106830227A CN201710116549.0A CN201710116549A CN106830227A CN 106830227 A CN106830227 A CN 106830227A CN 201710116549 A CN201710116549 A CN 201710116549A CN 106830227 A CN106830227 A CN 106830227A
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- 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
- C02F1/4691—Capacitive deionisation
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Abstract
The membrane capacitance deionizer and processing method of a kind of circular treatment of disclosure, including membrane capacitance deionization, voltage raising and reducing converter, dc source, raw water fluid reservoir, middle fluid reservoir, recycled water fluid reservoir, fresh water fluid reservoir, monitored conductivity instrument, water pump, dynamic valve, check-valves and DC/DC direct current transducers;Technology based on electric double layer principle desalination, membrane capacitance deionizer is while desalination along with the storage of energy, and the regenerative process of capacitive deionization unit can discharge stored energy, the application realizes the collection to this portion of energy, and the energy of collection is being carried out the external power supply of the capacitive deionization unit of desalination work as other, in order to reach the purpose of storage energy maximization, the application introduces voltage raising and reducing converter, realize the recycling of energy, reduce energy consumption, the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Description
Technical field
The invention belongs to technical field of environment protection equipment, more particularly to a kind of circular treatment membrane capacitance deionizer and treatment
Method.
Background technology
With the sharp increase developed rapidly with population of industrial society, freshwater resources are used as industrial and agricultural production, economic hair
Irreplaceable valuable natural resources in exhibition and enhancement of environment, its demand is growing day by day.And seawater and bitter account for World Water
The 98% of total resources, therefore it is the effective way for solving the problems, such as shortage of fresh water therefrom to obtain cheap fresh water.
At present, the technology of desalinization is realized mainly including the way of distillation, hyperfiltration and method etc. electroosmose process, but this
A little methods have the shortcomings that power consumption is high, produce secondary pollution.As a kind of new desalting technology, capacitive deionization technology
(Capacitive Deionization, CDI) is, using electric double layer principle, ion to be forced to different by applying electrostatic field
Plant and moved at the electrode of electric charge, so that the ion in removing solution.And membrane capacitance deionization technology (Membrane
Capacitive Deionization, MCDI) principle it is similar with capacitive deionization technology, it is simply each on positive and negative electrode surface
It is close to one layer of anions and canons exchange membrane, had both ensured normal migration, the adsorption process of ion, adion can be effectively prevented again
It is pulled away because of turbulent water, and can avoids being desorbed ion by second adsorption in lateral electrode in regenerative process, so as to carries significantly
High ion remaval efficiency and electrode regeneration efficiency.
MCDI technologies low cost, high efficiency and it is environment-friendly the features such as, make it have more preferable development prospect.Therefore, it is right
The research of the technology also becomes a current focus.Have introduced below through consulting patent document.
Chinese patent(CN103991937)Disclose a kind of using the continuous wastewater treatment equipment of membrane capacitance deionization, it is special
Levy and be:Involved membrane electrode is that carbon electrode is formed integrally with ionic membrane, is applied using cation exchange is sprayed on negative electrode
Layer, sprays anion exchange coating on anode, is prepared into membrane electrode, and the thickness of its ion exchange layer is less than 10 microns, than straight
Connect small plus the resistance of ionic membrane, capacitance is big.The device can be solved effectively in old-fashioned capacitor deionizing instrument industrialization process
Desalting efficiency is low, easy fouling and reach water outlet requirement and need the problems such as electric adsorption module is more, investment is big, floor space is big, but
It has that energy consumption is higher and the defect such as regeneration effect difference.
Chinese patent(CN104926004 A)The condenser type sea water desalination disclosed under a kind of effect based on DC electric field sets
After standby and method raw material seawater is pre-processed through sand filtration and ultrafiltration etc., sequentially enter two-stage capacitive deionization module and complete more than 95%
Desalination obtain fresh water, backwash concentrated water can return to first order capacitive deionization module and processes again by reflux line.This
The advantage of invention is:Ion grid in capacitive deionization module can effectively prevent anions and canons in reverse charge desorption process
By electrode adsorption, cleaning, regeneration effect and the operating efficiency of electrode are improve;Sea is desalinated using two-stage capacitive deionization module
Water, reduces operating pressure, and this makes it possible for PVC plastic material and substitutes expensive two phase stainless steel, thoroughly solves sea
Water is to the etching problem of metallic conduit, and water use efficiency is significantly higher than reverse osmosis membrane.Additionally, the reduction of system running pressure is also
The investment of the reverse osmosis membrane condensed water energy recycle device of costliness can be saved.
Although patent document disclosed in prior art also relates to MCDI technologies, and design is a kind of to have low energy consumption, renewable,
The operating efficiency of deionization technology, the film electricity of the circular treatment of operating cost during reduction concentrated water desalination can at utmost be improved
Hold deionizer and processing method is very important.
The content of the invention
The application provides the membrane capacitance deionizer and processing method of a kind of circular treatment, makes full use of deionization to process
During produce the energy.
The present invention uses following technical scheme:
A kind of membrane capacitance deionizer of circular treatment, the membrane capacitance deionizer of the circular treatment goes including membrane capacitance
Deionization unit, voltage raising and reducing converter, dc source, raw water fluid reservoir, middle fluid reservoir, recycled water fluid reservoir, fresh water liquid storage
Tank, monitored conductivity instrument, water pump, dynamic valve, check-valves and DC/DC direct current transducers, the membrane capacitance deionization is by film
Capacitive deionization component A and membrane capacitance deionization B compositions, the voltage raising and reducing converter and membrane capacitance deionization
Collector is connected, raw water fluid reservoir, middle fluid reservoir, recycled water fluid reservoir and fresh water fluid reservoir by water pipe and membrane capacitance go from
The intake-outlet of sub-component is connected, and pipeline is provided with monitored conductivity instrument, water pump, dynamic valve and check-valves, dc source and DC/
DC direct current transducers are connected.
As a kind of optimal technical scheme of the application:Voltage raising and reducing converter is when membrane capacitance deionization A absorption
During saturation, the electric energy transfer that will be stored on membrane capacitance deionization A to membrane capacitance deionization B;When membrane capacitance deionization
During component B adsorption saturations, will on membrane capacitance deionization B store electric energy transfer to membrane capacitance deionization A, the energy
The rate of transform is 30%-50%.
As a kind of optimal technical scheme of the application:Described dc source is by DC/DC direct current transducer voltages
1.0-1.2V, gives membrane capacitance deionization supply of electrical energy, and supplement consumption in the later stage is run during for running for the first time
The energy.
As a kind of optimal technical scheme of the application:Raw water needed for the raw water fluid reservoir offer desalting processing;In
Between fluid reservoir processed as membrane capacitance deionization after not up to processing requirement storage area of the salt solution in desalination processes, its
Interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches the multistep treatment of strong brine;Recycled water fluid reservoir is used
Required water and electrode regeneration finish the concentrated water of generation when carrying out storage electrode regeneration;Fresh water fluid reservoir reaches treatment for storage will
The water outlet asked.
As a kind of optimal technical scheme of the application:The monitored conductivity instrument is the conductivity meter of on-line monitoring, is surveyed
Obtain the basis for estimation that electrical conductivity of solution value reaches saturation as control water pump, dynamic valve and non-return threshold switch and electrode;Work as film
Capacitor deionization unit turnover water end (W.E.) measures conductivity value unanimously, illustrates that electrode reaches saturation, and electrode needs regeneration;Work as membrane capacitance
Deionization unit water outlet conductivity concentration reaches processing requirement, and water outlet enters fresh water fluid reservoir;When membrane capacitance deionization unit water outlet
Electrical conductivity concentration fails to reach processing requirement, but less than water inlet end electrical conductivity, water outlet enters middle fluid reservoir.
As a kind of optimal technical scheme of the application:Gone by per effective area electric capacity in the water pump unit interval
The flow of deionization unit is 1.0-1.5L/ (minm2)。
A kind of processing method of the membrane capacitance deionizer of circular treatment, step is:
The first step:Raw water enters pipeline, after monitored conductivity instrument record initial conductivity, arrival membrane capacitance deionization,
Being powered with converted dc source carries out desalination;Water outlet conductivity is monitored, the water outlet for reaching processing requirement enters light
Water fluid reservoir, and not up to processing requirement but electrical conductivity enters middle fluid reservoir storage less than the salt solution of water inlet end, after treating its
Interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, to realize the multistep treatment of strong brine;
Second step:When membrane capacitance deionization unit turnover water end (W.E.) measures conductivity value unanimously, illustrate that electrode reaches adsorption saturation, need
Regeneration;The electric energy transfer that will be stored on membrane capacitance deionization A using voltage raising and reducing converter is to membrane capacitance deionization
B, the part energy of supply loss after dc source is converted;Regenerative process water is provided by recycled water fluid reservoir, and water outlet is returned again
In flowing to tank;When water outlet conductivity no longer changes, regenerative process terminates;
3rd step:Membrane capacitance deionization A and membrane capacitance deionization B alternations, make desalting process continuously transport all the time
OK;When membrane capacitance deionization A is stopped to be regenerated, membrane capacitance deionization B is to start working;Its energy by
The energy converted using voltage raising and reducing converter when membrane capacitance deionization A regenerates is provided, and insufficient section is by direct current
Supplied after the conversion of source;In addition the running of membrane capacitance deionization B and first operation membrane capacitance deionization A phases
Together, until membrane capacitance deionization B reaches adsorption saturation, the regenerative process described in second step is repeated.
The membrane capacitance deionizer and processing method of herein described circular treatment using above technical scheme with it is existing
Technology is compared, with following technique effect:
1. the technology of electric double layer principle desalination is based on, so effectively be make use of along with the storage of energy while desalination
The energy on electrode is stored in during desalination;
2. and the regenerative process of capacitive deionization unit can release energy, the application realizes the collection to this portion of energy, and
The energy of collection is being carried out the external power supply of the capacitive deionization unit of desalination work as other;
3. the purpose of energy maximization is stored to reach, and the application introduces voltage raising and reducing converter, realizes the recovery of energy
Utilize, reduce energy consumption;
4. the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Brief description of the drawings:
The energy spectrogram of single mantle capacitive deionization assembly operating process when Fig. 1 is the application plant running.
Fig. 2 is the energy transformation ratio figure during the voltage raising and reducing converter of the application application.
Fig. 3 is the principle schematic of the application.
Fig. 4 is the electrode regeneration circuit connection diagram of the application.
Description of reference numerals:1-1, membrane capacitance deionization A, 1-2, membrane capacitance deionization B, 2, voltage raising and reducing turns
Parallel operation, 3, dc source, 4, raw water fluid reservoir, 5, middle fluid reservoir, 6, recycled water fluid reservoir, 7, fresh water fluid reservoir, 8, conductance
Rate monitor, 9, water pump, 10, dynamic valve, 11, check-valves, 12, DC/DC direct current transducers.
Specific embodiment
The specific embodiment of the application is described in further detail with reference to Figure of description.
Embodiment 1:
Shown as shown in Figure 1, Figure 3 and Figure 4, a kind of membrane capacitance deionizer of circular treatment, the membrane capacitance of the circular treatment goes
Ion unit includes membrane capacitance deionization, voltage raising and reducing converter 2, dc source 3, raw water fluid reservoir 4, middle fluid reservoir
5th, recycled water fluid reservoir 6, fresh water fluid reservoir 7, monitored conductivity instrument 8, water pump 9, dynamic valve 10, check-valves 11 and DC/DC direct currents
Converter 12, the membrane capacitance deionization is by membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2 groups
Into the voltage raising and reducing converter 2 is connected with the collector of membrane capacitance deionization, and voltage raising and reducing converter 2 is when film electricity
Hold deionization A1-1 adsorption saturations when, by membrane capacitance deionization A1-1 store electric energy transfer to membrane capacitance go from
Sub-component B1-2;When membrane capacitance deionization B1-2 adsorption saturations, the electricity that will be stored on membrane capacitance deionization B1-2
Membrane capacitance deionization A1-1, raw water fluid reservoir 4, middle fluid reservoir 5, recycled water fluid reservoir 6 and fresh water liquid storage can be transferred to
Tank 7 is connected by water pipe with the intake-outlet of membrane capacitance deionization, and the raw water fluid reservoir 4 is provided needed for desalting processing
Raw water;Middle fluid reservoir 5 is not up to the salt solution of processing requirement in desalination processes after being processed as membrane capacitance deionization
Storage area, its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches the multistep treatment of strong brine;Recycled water
The water required when being regenerated for storage electrode of fluid reservoir 6 and electrode regeneration finish the concentrated water of generation;Fresh water fluid reservoir 7 is used to store
The water outlet of processing requirement is reached, pipeline is provided with monitored conductivity instrument 8, water pump 9, dynamic valve 10 and check-valves 11, the conductance
Rate monitor 8 is the conductivity meter of on-line monitoring, measures electrical conductivity of solution value as control water pump 9, dynamic valve 10 and check-valves
11 switches and electrode reach the basis for estimation of saturation;When the turnover water end (W.E.) of membrane capacitance deionization unit 1 measures conductivity value unanimously,
Illustrate that electrode reaches saturation, electrode needs regeneration;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 reaches processing requirement, go out
Water enters fresh water fluid reservoir 7;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 fails to reach processing requirement, but be less than into
Water end (W.E.) electrical conductivity, water outlet enters middle fluid reservoir 5, and per effective area capacitive deionization is passed through in the unit interval of the water pump 9
The flow of component is 1.0L/ (minm2), dc source 3 is connected with DC/DC direct current transducers 12, and dc source 3 is by DC/
The voltage of DC direct current transducers 12 is 1.2V, and the supply of electrical energy of membrane capacitance deionization 1 is given during for running for the first time, and rear
The energy of consumption is supplemented in phase operation.
Raw water enters pipeline, after the record initial conductivity of monitored conductivity instrument 8, arrival membrane capacitance deionization, with
Converted dc source is powered carries out desalination;Water outlet conductivity is monitored, the water outlet for reaching processing requirement enters fresh water
Fluid reservoir 7, and not up to processing requirement but electrical conductivity enters middle fluid reservoir 5 and store less than the salt solution of water inlet end, after treating its
Interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, to realize the multistep treatment of strong brine.
When membrane capacitance deionization unit 1-1 turnover water end (W.E.)s measure conductivity value unanimously, illustrate that electrode reaches adsorption saturation, need
Regeneration;The electric energy transfer that will be stored on membrane capacitance deionization A1-1 using voltage raising and reducing converter 2 is to membrane capacitance deionization
Component B1-2, the part energy of supply loss after dc source 3 is converted;Regenerative process water is provided by recycled water fluid reservoir 6,
Water outlet is back in tank again;When water outlet conductivity no longer changes, regenerative process terminates.
Membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2 alternations, make desalting process continuous all the time
Operation;When membrane capacitance deionization A1-1 is stopped to be regenerated, membrane capacitance deionization B1-2 is to start working;
The energy converted using voltage raising and reducing converter 2 when its energy is regenerated by membrane capacitance deionization A1-1 is provided, not enough
Supplied after being changed by dc source part;In addition the running of membrane capacitance deionization B1-2 goes with operation membrane capacitance first
It is identical during deionization unit A1-1, until membrane capacitance deionization B1-2 reaches adsorption saturation, repeat the regeneration described in second step
Process.
Based on the technology of electric double layer principle desalination, so along with the storage of energy while desalination, it is effective to utilize
The energy on electrode is stored in during desalination, and the regenerative process of capacitive deionization unit can release energy, the application realizes
Collection to this portion of energy, and the energy of collection is being carried out as other desalination work capacitive deionization unit it is outer
Power supply is connect, in order to reach the purpose of storage energy maximization, the application introduces voltage raising and reducing converter, realizes the recovery of energy
Utilize, reduce energy consumption, the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Device initial operating voltage is 1.2V, and flow is 1 L/min, using MCDI components 25 pairs, effective area during work
It is 1m2.Setting influent density be 10 mM, electrical conductivity be 1 mS/cm, Effluent criteria be concentration 4mM, the μ S/cm of electrical conductivity 400,
I.e. ion remaval rate is 60%.In running, when water outlet conductivity is more than 400 μ S/cm and is less than into water conductivity, water outlet is entered
Enter middle fluid reservoir;When water outlet conductivity is identical with water conductivity is entered, work MCDI components enter regenerative process, this pair of component
Another MCDI components start working.The Buck-Boost dc-dcs applied by two mosfet transistors, two
Electric capacity, a resistance and an inductance composition, 31% is about according to experimental result energy recovery efficiency.
Embodiment 2
As shown in Figure 2, Figure 3 and Figure 4, a kind of membrane capacitance deionizer of circular treatment, the membrane capacitance of the circular treatment goes
Ion unit includes membrane capacitance deionization, voltage raising and reducing converter 2, dc source 3, raw water fluid reservoir 4, middle fluid reservoir
5th, recycled water fluid reservoir 6, fresh water fluid reservoir 7, monitored conductivity instrument 8, water pump 9, dynamic valve 10, check-valves 11 and DC/DC direct currents
Converter 12, the membrane capacitance deionization is by membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2 groups
Into the voltage raising and reducing converter 2 is connected with the collector of membrane capacitance deionization, and voltage raising and reducing converter 2 is when film electricity
Hold deionization A1-1 adsorption saturations when, by membrane capacitance deionization A1-1 store electric energy transfer to membrane capacitance go from
Sub-component B1-2;When membrane capacitance deionization B1-2 adsorption saturations, the electricity that will be stored on membrane capacitance deionization B1-2
Membrane capacitance deionization A1-1, raw water fluid reservoir 4, middle fluid reservoir 5, recycled water fluid reservoir 6 and fresh water liquid storage can be transferred to
Tank 7 is connected by water pipe with the intake-outlet of membrane capacitance deionization, and the raw water fluid reservoir 4 is provided needed for desalting processing
Raw water;Middle fluid reservoir 5 is not up to the salt solution of processing requirement in desalination processes after being processed as membrane capacitance deionization
Storage area, its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches the multistep treatment of strong brine;Recycled water
The water required when being regenerated for storage electrode of fluid reservoir 6 and electrode regeneration finish the concentrated water of generation;Fresh water fluid reservoir 7 is used to store
The water outlet of processing requirement is reached, pipeline is provided with monitored conductivity instrument 8, water pump 9, dynamic valve 10 and check-valves 11, the conductance
Rate monitor 8 is the conductivity meter of on-line monitoring, measures electrical conductivity of solution value as control water pump 9, dynamic valve 10 and check-valves
11 switches and electrode reach the basis for estimation of saturation;When the turnover water end (W.E.) of membrane capacitance deionization unit 1 measures conductivity value unanimously,
Illustrate that electrode reaches saturation, electrode needs regeneration;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 reaches processing requirement, go out
Water enters fresh water fluid reservoir 7;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 fails to reach processing requirement, but be less than into
Water end (W.E.) electrical conductivity, water outlet enters middle fluid reservoir 5, and per effective area capacitive deionization is passed through in the unit interval of the water pump 9
The flow of component is 1.5 L/ (minm2), dc source 3 is connected with DC/DC direct current transducers 12, and dc source 3 is by DC/
The voltage of DC direct current transducers 12 is 1.0V, and the supply of electrical energy of membrane capacitance deionization 1 is given during for running for the first time, and rear
The energy of consumption is supplemented in phase operation.
Raw water enters pipeline, after the record initial conductivity of monitored conductivity instrument 8, arrival membrane capacitance deionization, with
Converted dc source is powered carries out desalination;Water outlet conductivity is monitored, the water outlet for reaching processing requirement enters fresh water
Fluid reservoir 7, and not up to processing requirement but electrical conductivity enters middle fluid reservoir 5 and store less than the salt solution of water inlet end, after treating its
Interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, to realize the multistep treatment of strong brine.
When membrane capacitance deionization unit 1-1 turnover water end (W.E.)s measure conductivity value unanimously, illustrate that electrode reaches adsorption saturation, need
Regeneration;The electric energy transfer that will be stored on membrane capacitance deionization A1-1 using voltage raising and reducing converter 2 is to membrane capacitance deionization
Component B1-2, the part energy of supply loss after dc source 3 is converted;Regenerative process water is provided by recycled water fluid reservoir 6,
Water outlet is back in tank again;When water outlet conductivity no longer changes, regenerative process terminates.
Membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2 alternations, make desalting process continuous all the time
Operation;When membrane capacitance deionization A1-1 is stopped to be regenerated, membrane capacitance deionization B1-2 is to start working;
The energy converted using voltage raising and reducing converter 2 when its energy is regenerated by membrane capacitance deionization A1-1 is provided, not enough
Supplied after being changed by dc source part;In addition the running of membrane capacitance deionization B1-2 goes with operation membrane capacitance first
It is identical during deionization unit A1-1, until membrane capacitance deionization B1-2 reaches adsorption saturation, repeat the regeneration described in second step
Process.
Based on the technology of electric double layer principle desalination, so along with the storage of energy while desalination, it is effective to utilize
The energy on electrode is stored in during desalination, and the regenerative process of capacitive deionization unit can release energy, the application realizes
Collection to this portion of energy, and the energy of collection is being carried out as other desalination work capacitive deionization unit it is outer
Power supply is connect, in order to reach the purpose of storage energy maximization, the application introduces voltage raising and reducing converter, realizes the recovery of energy
Utilize, reduce energy consumption, the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Embodiment 3
As shown in Figure 3 and Figure 4, the membrane capacitance deionizer of a kind of circular treatment, the membrane capacitance deionization of the circular treatment
Device includes membrane capacitance deionization, voltage raising and reducing converter 2, dc source 3, raw water fluid reservoir 4, middle fluid reservoir 5, again
The conversion of unboiled water fluid reservoir 6, fresh water fluid reservoir 7, monitored conductivity instrument 8, water pump 9, dynamic valve 10, check-valves 11 and DC/DC direct currents
Device 12, the membrane capacitance deionization is made up of membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2, institute
Voltage raising and reducing converter 2 is stated to be connected with the collector of membrane capacitance deionization, voltage raising and reducing converter 2 be when membrane capacitance go from
During sub-component A1-1 adsorption saturations, the electric energy transfer that will be stored on membrane capacitance deionization A1-1 to membrane capacitance deionization
B1-2;When membrane capacitance deionization B1-2 adsorption saturations, the electric energy transfer that will be stored on membrane capacitance deionization B1-2
To membrane capacitance deionization A1-1, raw water fluid reservoir 4, middle fluid reservoir 5, recycled water fluid reservoir 6 and fresh water fluid reservoir 7 pass through
Water pipe is connected with the intake-outlet of membrane capacitance deionization, the raw water needed for the offer of raw water fluid reservoir 4 desalting processing;In
Between fluid reservoir 5 processed as membrane capacitance deionization after not up to processing requirement storage area of the salt solution in desalination processes,
Its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches the multistep treatment of strong brine;Recycled water fluid reservoir 6
Required water and electrode regeneration finish the concentrated water of generation when being regenerated for storage electrode;Fresh water fluid reservoir 7 reaches place for storage
Desired water outlet is managed, pipeline is provided with monitored conductivity instrument 8, water pump 9, dynamic valve 10 and check-valves 11, the monitored conductivity
Instrument 8 is the conductivity meter of on-line monitoring, measures electrical conductivity of solution value and is switched as control water pump 9, dynamic valve 10 and check-valves 11
And electrode reaches the basis for estimation of saturation;When the turnover water end (W.E.) of membrane capacitance deionization unit 1 measures conductivity value unanimously, electricity is illustrated
Pole reaches saturation, and electrode needs regeneration;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 reaches processing requirement, water outlet enters
Fresh water fluid reservoir 7;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 fails to reach processing requirement, but less than water inlet end electricity
Conductance, water outlet enters middle fluid reservoir 5, by per effective area capacitive deionization component in the unit interval of the water pump 9
Flow is 1 L/ (minm2), dc source 3 is connected with DC/DC direct current transducers 12, and dc source 3 turns by DC/DC direct currents
The voltage of parallel operation 12 is 1.0V, and the supply of electrical energy of membrane capacitance deionization 1 is given during for running for the first time, and in the later stage is run
Supplement the energy of consumption.
Using from water distribution, inorganic matter composition is sodium chloride, and initial conductivity, conductance are recorded through monitored conductivity instrument 8 for water inlet
Rate is 1.5 mS/cm, and water temperature is 20 DEG C;Device is made up of two groups of membrane capacitance deionizations, and each membrane capacitance deionization contains
There are 25 groups of electrodes, it is electrode to use active carbon fiber felt, and effective electrode area is 1 m2, graphite flake is collector, in electrode table
Anion/cation exchange membrane is installed in face, and membrane capacitance deionization I operating voltages are 1.0 V, and flow is 1 L/min, when going out water power
Conductance is less than 200 μ S/cm, and water outlet enters fresh water fluid reservoir;When water outlet conductivity is more than 200 μ S/cm and less than water inlet conductance
Rate, water outlet enters middle fluid reservoir;When water outlet conductivity is identical with water conductivity is entered, membrane capacitance deionization I enters again
Raw process, energy conversion is carried out using Buck-Boost dc-dcs, and energy recovery efficiency is 33% -38%.Membrane capacitance
In deionization I regenerative processes, membrane capacitance deionization II starts working, and is fed by additional power supply, when going out water power
Conductance is less than 200 μ S/cm, and water outlet enters fresh water fluid reservoir;When water outlet conductivity is higher than 200 μ S/cm, water outlet enters middle storage
Flow container;When water outlet conductivity is identical with water conductivity is entered, membrane capacitance deionization II adsorption saturations, component enters regeneration rank
Section.During operation, the liquid that membrane capacitance deionization can be in the middle of priority treatment in fluid reservoir, in reprocessing raw water fluid reservoir
Salt solution in liquid, or middle fluid reservoir can be mixed into membrane capacitance deionization with the salt solution in raw water fluid reservoir.Film
In capacitive deionization component I regenerative processes, membrane capacitance deionization II starts working, and is fed by additional power supply, so
Move in circles, realize the purpose that membrane capacitance deionizer is processed brine recycling.
Based on the technology of electric double layer principle desalination, so along with the storage of energy while desalination, it is effective to utilize
The energy on electrode is stored in during desalination, and the regenerative process of capacitive deionization unit can release energy, the application realizes
Collection to this portion of energy, and the energy of collection is being carried out as other desalination work capacitive deionization unit it is outer
Power supply is connect, in order to reach the purpose of storage energy maximization, the application introduces voltage raising and reducing converter, realizes the recovery of energy
Utilize, reduce energy consumption, the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Embodiment 4
As shown in Figure 3 and Figure 4, the membrane capacitance deionizer of a kind of circular treatment, the membrane capacitance deionization of the circular treatment
Device includes membrane capacitance deionization, voltage raising and reducing converter 2, dc source 3, raw water fluid reservoir 4, middle fluid reservoir 5, again
The conversion of unboiled water fluid reservoir 6, fresh water fluid reservoir 7, monitored conductivity instrument 8, water pump 9, dynamic valve 10, check-valves 11 and DC/DC direct currents
Device 12, the membrane capacitance deionization is made up of membrane capacitance deionization A1-1 and membrane capacitance deionization B1-2, institute
Voltage raising and reducing converter 2 is stated to be connected with the collector of membrane capacitance deionization, voltage raising and reducing converter 2 be when membrane capacitance go from
During sub-component A1-1 adsorption saturations, the electric energy transfer that will be stored on membrane capacitance deionization A1-1 to membrane capacitance deionization
B1-2;When membrane capacitance deionization B1-2 adsorption saturations, the electric energy transfer that will be stored on membrane capacitance deionization B1-2
To membrane capacitance deionization A1-1, raw water fluid reservoir 4, middle fluid reservoir 5, recycled water fluid reservoir 6 and fresh water fluid reservoir 7 pass through
Water pipe is connected with the intake-outlet of membrane capacitance deionization, the raw water needed for the offer of raw water fluid reservoir 4 desalting processing;In
Between fluid reservoir 5 processed as membrane capacitance deionization after not up to processing requirement storage area of the salt solution in desalination processes,
Its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches the multistep treatment of strong brine;Recycled water fluid reservoir 6
Required water and electrode regeneration finish the concentrated water of generation when being regenerated for storage electrode;Fresh water fluid reservoir 7 reaches place for storage
Desired water outlet is managed, pipeline is provided with monitored conductivity instrument 8, water pump 9, dynamic valve 10 and check-valves 11, the monitored conductivity
Instrument 8 is the conductivity meter of on-line monitoring, measures electrical conductivity of solution value and is switched as control water pump 9, dynamic valve 10 and check-valves 11
And electrode reaches the basis for estimation of saturation;When the turnover water end (W.E.) of membrane capacitance deionization unit 1 measures conductivity value unanimously, electricity is illustrated
Pole reaches saturation, and electrode needs regeneration;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 reaches processing requirement, water outlet enters
Fresh water fluid reservoir 7;When the water outlet conductivity concentration of membrane capacitance deionization unit 1 fails to reach processing requirement, but less than water inlet end electricity
Conductance, water outlet enters middle fluid reservoir 5, by per effective area capacitive deionization component in the unit interval of the water pump 9
Flow is 1 L/ (minm2), dc source 3 is connected with DC/DC direct current transducers 12, and dc source 3 turns by DC/DC direct currents
The voltage of parallel operation 12 is 1.2V, and the supply of electrical energy of membrane capacitance deionization 1 is given during for running for the first time, and in the later stage is run
Supplement the energy of consumption.
Using from water distribution, inorganic matter composition is sodium chloride, and initial conductivity electrical conductivity is recorded through monitored conductivity instrument 8 for water inlet
It is 1.7 mS/cm, water temperature is 20 DEG C;Device is made up of two groups of membrane capacitance deionizations, and each membrane capacitance deionization contains
25 groups of electrodes, it is electrode to use active carbon fiber felt, and effective electrode area is 1 m2, graphite flake is collector, in electrode surface
Anion/cation exchange membrane is installed, membrane capacitance deionization I operating voltages are 1.2 V, and flow is 1 L/min, when water outlet conductance
Rate is less than 400 μ S/cm, and water outlet enters fresh water fluid reservoir;When water outlet conductivity is more than 400 μ S/cm and is less than into water conductivity,
Water outlet enters middle fluid reservoir;When water outlet conductivity is identical with water conductivity is entered, membrane capacitance deionization I entrance regenerated
Journey, energy conversion is carried out using Buck-Boost dc-dcs, and energy recovery efficiency is about 36% -45%.Membrane capacitance goes
In deionization unit I regenerative processes, membrane capacitance deionization II starts working, and is fed by additional power supply, when water outlet conductance
Rate is less than 400 μ S/cm, and water outlet enters fresh water fluid reservoir;When water outlet conductivity is higher than 400 μ S/cm, water outlet enters middle liquid storage
Tank;When water outlet conductivity is identical with water conductivity is entered, membrane capacitance deionization II adsorption saturations, component enters regeneration rank
Section.During operation, the liquid that membrane capacitance deionization can be in the middle of priority treatment in fluid reservoir, in reprocessing raw water fluid reservoir
Salt solution in liquid, or middle fluid reservoir can be mixed into membrane capacitance deionization with the salt solution in raw water fluid reservoir.Film
In capacitive deionization component I regenerative processes, membrane capacitance deionization II starts working, and is fed by additional power supply, so
Move in circles, realize the purpose that membrane capacitance deionizer is processed brine recycling.
Based on the technology of electric double layer principle desalination, so along with the storage of energy while desalination, it is effective to utilize
The energy on electrode is stored in during desalination, and the regenerative process of capacitive deionization unit can release energy, the application realizes
Collection to this portion of energy, and the energy of collection is being carried out as other desalination work capacitive deionization unit it is outer
Power supply is connect, in order to reach the purpose of storage energy maximization, the application introduces voltage raising and reducing converter, realizes the recovery of energy
Utilize, reduce energy consumption, the experimental provision design of the application can reach the effect of strong brine multistep treatment.
Presently filed embodiment is explained in detail above in conjunction with accompanying drawing, but the application is not limited to above-mentioned implementation
Mode, in the ken that those of ordinary skill in the art possess, can also be on the premise of the application objective not be departed from
Make a variety of changes.
Claims (7)
1. the membrane capacitance deionizer of a kind of circular treatment, it is characterised in that:The membrane capacitance deionization dress of the circular treatment
Put including membrane capacitance deionization, voltage raising and reducing converter(2), dc source(3), raw water fluid reservoir(4), middle fluid reservoir
(5), recycled water fluid reservoir(6), fresh water fluid reservoir(7), monitored conductivity instrument(8), water pump(9), dynamic valve(10), check-valves
(11)With DC/DC direct current transducers(12), the membrane capacitance deionization is by membrane capacitance deionization A(1-1)With film electricity
Hold deionization B(1-2)Composition, the voltage raising and reducing converter(2)Collector with membrane capacitance deionization is connected, former
Water fluid reservoir(4), middle fluid reservoir(5), recycled water fluid reservoir(6)With fresh water fluid reservoir(7)By water pipe and membrane capacitance go from
The intake-outlet of sub-component is connected, and pipeline is provided with monitored conductivity instrument(8), water pump(9), dynamic valve(10)And check-valves
(11), dc source(3)With DC/DC direct current transducers(12)It is connected.
2. the membrane capacitance deionizer of circular treatment according to claim 1, it is characterised in that:Voltage raising and reducing converter
(2)It is as membrane capacitance deionization A(1-1)During adsorption saturation, by membrane capacitance deionization A(1-1)The electric energy of upper storage
It is transferred to membrane capacitance deionization B(1-2);As membrane capacitance deionization B(1-2)During adsorption saturation, by membrane capacitance go from
Sub-component B(1-2)The electric energy transfer of upper storage is to membrane capacitance deionization A(1-1), the rate of transform of the energy is 50%-80%.
3. the membrane capacitance deionizer of circular treatment according to claim 1, it is characterised in that:Described dc source
(3)By DC/DC direct current transducers(12)Voltage is 1.0-1.2V, and membrane capacitance deionization is given during for running for the first time
(1)Supply of electrical energy, and the energy of consumption is supplemented in the later stage is run.
4. the membrane capacitance deionizer of circular treatment according to claim 1, it is characterised in that:The raw water fluid reservoir
(4)Raw water needed for desalting processing is provided;Middle fluid reservoir(5)Not up to treatment will after being processed as membrane capacitance deionization
Storage area of the salt solution asked in desalination processes, its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment, reaches
The multistep treatment of strong brine;Recycled water fluid reservoir(6)Required water and electrode regeneration finish generation when being regenerated for storage electrode
Concentrated water;Fresh water fluid reservoir(7)The water outlet of processing requirement is reached for storing.
5. the membrane capacitance deionizer of circular treatment according to claim 1, it is characterised in that:The monitored conductivity instrument
(8)It is the conductivity meter of on-line monitoring, measures electrical conductivity of solution value as control water pump(9), dynamic valve(10)And check-valves
(11)Switch and electrode reach the basis for estimation of saturation;When membrane capacitance deionization unit(1)Turnover water end (W.E.) measures conductivity value
Unanimously, illustrate that electrode reaches saturation, electrode needs regeneration;When membrane capacitance deionization unit(1)Water outlet conductivity concentration reaches treatment
It is required that, water outlet enters fresh water fluid reservoir(7);When membrane capacitance deionization unit(1)Water outlet conductivity concentration fails to reach to process to be wanted
Ask, but less than water inlet end electrical conductivity, water outlet enters middle fluid reservoir(5).
6. the membrane capacitance deionizer of circular treatment according to claim 1, it is characterised in that:The water pump(9)Unit
The flow for passing through per effective area capacitive deionization component in time is 1.0-1.5L/ (minm2)。
7. the processing method of the membrane capacitance deionizer of circular treatment described in a kind of claim 1, it is characterised in that step is:
The first step:Raw water enters pipeline, through monitored conductivity instrument(8)After record initial conductivity, membrane capacitance deionization group is reached
Part, being powered with converted dc source carries out desalination;Water outlet conductivity is monitored, the water outlet for reaching processing requirement enters
Fresh water fluid reservoir(7), and not up to processing requirement but electrical conductivity enter middle fluid reservoir less than the salt solution of water inlet end(5)Storage,
Its interior salt solution is back in raw water pipeline and mixes and continue cycling through treatment after treating, to realize the multistep treatment of strong brine;
Second step:When membrane capacitance deionization unit(1-1)Turnover water end (W.E.) measures conductivity value unanimously, illustrates that electrode reaches absorption full
With, need regeneration;Using voltage raising and reducing converter(2)By membrane capacitance deionization A(1-1)The electric energy transfer of upper storage is electric to film
Hold deionization B(1-2), dc source(3)The part energy of supply loss after converted;Regenerative process water is by recycled water
Fluid reservoir(6)There is provided, water outlet is back in tank again;When water outlet conductivity no longer changes, regenerative process terminates;
3rd step:Membrane capacitance deionization A(1-1)With membrane capacitance deionization B(1-2)Alternation, makes desalting process
All the time continuous operation;As membrane capacitance deionization A(1-1)It is stopped when being regenerated, membrane capacitance deionization B(1-
2)Start working;Its energy is by membrane capacitance deionization A(1-1)Voltage raising and reducing converter is utilized during regeneration(2)Conversion and
The energy for coming is provided, and insufficient section is supplied after being changed by dc source;In addition membrane capacitance deionization B(1-2)Operation
Journey and operation membrane capacitance deionization A first(1-1)Shi Xiangtong, until membrane capacitance deionization B(1-2)Reach absorption full
With the regenerative process described in repetition second step.
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