CN105948187A - Activated carbon filter coupling solar energy driven device for treating bitter salty water through membrane capacitive deionization and application method thereof - Google Patents
Activated carbon filter coupling solar energy driven device for treating bitter salty water through membrane capacitive deionization and application method thereof Download PDFInfo
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- CN105948187A CN105948187A CN201610415736.4A CN201610415736A CN105948187A CN 105948187 A CN105948187 A CN 105948187A CN 201610415736 A CN201610415736 A CN 201610415736A CN 105948187 A CN105948187 A CN 105948187A
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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
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses an activated carbon filter coupling solar energy driven device for treating bitter salty water through membrane capacitive deionization and an application method thereof, and belongs to the technical field of bitter salty water treatment. The problems that MCDI electrode organic pollution is serious, effluent quality is poor and non-renewable energy resources are used for supplying power of an existing method for treating bitter salty water through MCDI are solved. The device comprises a raw water tank, a check valve, a raw water inlet valve, an activated carbon filter, a drainage valve, a back washing water storage tank, a back washing valve, intermediate water tank, an MCDI water inlet valve, an MCDI assembly, a regeneration valve, a concentrated brine storage tank, a fluid flowmeter or water meter, a water outlet valve, a clean water tank and a solar power supply system. According to the device, gravity flow exists in the whole application process, the water supply power cost is saved, meanwhile, working pressure is low, clean and renewable solar energy is used as the power supply, and power saving and environmental protection are achieved; effluent quality is improved, and MCDI organic pollution is avoided; operation is easy, the maintenance rate is low, and no chemical agent exists.
Description
Technical field
The invention belongs to bitter processing technology field, be specifically related to a kind of low energy consumption, high efficiency, the continual and steady work run
Property the membrane capacitance deionization that drives of carbon filtering pool coupled solar process the device of bitter and application process thereof.
Background technology
Along with developing rapidly of industrial society quickly increases with population, water demand grows with each passing day, the United Nations and economic cooperation
Report that will there be 3.9 hundred million population hydropenias in the whole world in 2025 with development institution.Owing to climate change and industry are for natural fresh water
The irrational consumption of resource causes nature freshwater resources day by day to reduce, and the whole world has the freshwater resources of about 14% every year simultaneously
Contaminated, these all exacerbate the degree of shortage of water resources, and water crisis highlights day by day.And the water of 98% is by sea on the earth
Water and salt water composition, therefore every country is all developing desalting technology now.Now widely used desalting technology include flash distillation,
Reverse osmosis, mechanical vapor-compression, electrodialysis.But there is a lot of problem in these traditional desalting technologies, as electrodialysis uses
Voltage high, flash distillation needs energy consumption big, uses most reverse osmosiss then to there is high pressure, high energy and secondary pollution problem.
Membrane capacitance deionization (MCDI) is as a kind of low cost, high efficiency and environmentally friendly electrochemical desalting technology
Receive more and more attention.MCDI use porous material is as electrode, by electrode is applied voltage, at water stream channel
Middle formation electrostatic field, when bitter is by runner, the ion in bitter can be respectively to two electrodes under electrostatic field
Migrate, finally adsorbed by porous electrode and removed.MCDI can remove the most of ion causing the bitter salty characteristic of water,
Removal to other micro ion such as fluorion, nitrate ion is also effective simultaneously.
But MCDI can be polluted by dissolved organic matter and inorganic salt in During Process of Long-term Operation, and organic dirt
Contaminate MCDI is run and produce a very large impact.This is that to have high-specific surface area many mainly due to: the electrode material of use
Porous materials, such structures shape it Organic substance is just had to a good adsorption effect；In running, Organic substance will
The aperture of electrode accumulates, thus blocks aperture, and the growth that the Organic substance accumulated is microorganism provides environment, meeting
Generating one layer of biomembrane on electrode, these all can seriously reduce the adsorption capacity of electrode；Electrode is difficult at desorption stage simultaneously
Remove and accumulate in the Organic substance in aperture, and substantially can remove for inorganic ions.Therefore in long-term running,
Organic contamination can be serious the desalting effect affecting MCDI.
Activated carbon adsorption is that water supply plant is commonly used to process Organic substance in water one method, and activated carbon can not only be in Adsorption water
Organic substance, it is also possible to remove the color in water, smell, taste, radioactive substance etc., the removal of Active Carbon in Organic is except absorption
Outside effect, also microbiological deterioration.Activated carbon is divided into Powdered Activated Carbon and granular active carbon, and Powdered Activated Carbon typically exists
Former water adds, and by the Organic substance removed in water that is sufficiently mixed with former water, needs arrange stirring and adding equipment, dosage
Changing along with raw water quality fluctuation, operate relative complex, mobility is poor, is simultaneously introduced the Powdered Activated Carbon in former water
Present stage has no idea to reclaim, and cost of use is high, typically makees emergency processing and uses.
Summary of the invention
The MCDI electrode organic contamination that the invention aims to solve the method existence that existing MCDI processes bitter is tight
Problem heavy, that effluent quality is poor and use non-renewable energy resources are powered, and a kind of activated carbon filter coupled solar is provided
The membrane capacitance deionization driven processes device and the application process thereof of bitter.
The membrane capacitance deionization that the present invention a kind of activated carbon filter coupled solar drives processes the device of bitter, and it includes former
Water tank, check-valves, former water water intaking valve, activated carbon filter, drain valve, backwash water store water tank, backwash valve, middle water
Case, MCDI water intaking valve, MCDI assembly, regeneration valve, strong brine store water tank, fluid flowmeter or water meter, outlet valve,
Clear water water tank, solar electric power supply system；
Bottom described former water tank, outlet conduit arranges check-valves and former water water intaking valve, and with activated carbon filter top inlet channel
It is connected；Backwash water stores the water inlet pipe of water tank and arranges drain valve, and is connected with activated carbon filter top water inlet pipe；Activity
Arranging outlet conduit and backwash valve bottom carbon filtering pool, outlet conduit is connected with the water inlet pipe of intermediate water tank；Going out of intermediate water tank
Water pipe arranges MCDI water intaking valve, and is connected with the water inlet pipe of MCDI assembly；Strong brine stores the water inlet pipe of water tank and sets
Put regeneration valve, and be connected with the water inlet pipe of MCDI assembly；The outlet pipe of MCDI assembly arranges effusion meter or water meter, goes out
Water valve, and be connected with clear water tank inlet pipe.
The membrane capacitance deionization that above-mentioned activated carbon filter coupled solar drives processes the application process of device of bitter, by with
Lower step is carried out:
One, former water is directly entered former water tank through water inlet pipe, controls inflow by the ball-cock assembly in former water tank, it is ensured that former
Water tank constant level, and control activated carbon filter with the difference in height between intermediate water tank couple the sun by adjusting former water tank
The membrane capacitance deionization that can drive processes the operating pressure of the device of bitter；
Two, the water outlet of former water tank is entered by the water inlet on activated carbon filter top, drops through activated carbon adsorption and microorganism
Intermediate water tank is entered after solution effect；Activated carbon filter carries out backwash after running 6 days, during backwash, closes former water water intaking valve,
Open drain valve, make the current of intermediate water tank flow through activated carbon filter from bottom to top, enter backwash water and store water tank, middle water
Case and backwash water store the difference in height between water tank and provide the power of water movement, after backwash completes, close drain valve, open
Former water water intaking valve, re-starts filtration；
Three, MCDI assembly, solar electric power supply system wire are connected into complete loops, make on MCDI assembly electrode
The voltage applied is 1.2V, and under voltage effect, water stream channel can form electrostatic field；During operation, the water outlet of intermediate water tank
Under intermediate water tank with clear water tank height difference effect, the water inlet through MCDI assembly enters, and carries out desalination processes；
Four, the mode of reversal connection circuit is used to be desorbed: when, after MCDI assembly operating 3 days, closing MCDI water intaking valve,
Open regeneration valve, allow the water in clear water water tank store at clear water water tank and strong brine and flow counterflow through under tank height difference effect
MCDI assembly, simultaneously by two electrodes of MCDI assembly and solar electric power supply system reversal connection, the ion that desorption has adsorbed,
The ion of desorption can store water tank along with reverse current flow into strong brine, after 2 hours regenerate, closes regeneration valve, beats
Open MCDI water intaking valve, re-start desalination processes；
Five, after running 12 days, backwash water is stored water tank and clears up, strong brine is stored the strong brine in water tank simultaneously
Taking-up carries out natural evaporation process；
Six, MCDI assembly uses periodically continued operation, and each cycle includes absorption and two stages of desorption.
The principle of the present invention and advantage be:
(1) the former water tank of the present invention uses ball-cock assembly to control inflow, it is to avoid water resource waste, is able to maintain that former simultaneously
Constant level in water tank, it is ensured that filter required operating pressure；
(2) the most whole process of assembly of the invention is all gravity stream, relies on the difference in height between each water tank to provide water
The power of stream motion, saves water supply power cost, simultaneously because MCDI component operation pressure is low, is generally lower than 1.5V,
Therefore the reproducible solar energy of cleaning can be used as power supply, i.e. save power consumption and protect again environment；
(3) MCDI is a kind of electro-adsorption desalting technology based on electrochemical double-layer capacitor theory, and its basic thought is to pass through
To porous adsorption electrode apply an external dc voltage, between two electrodes formed electrostatic field, make in bitter electrical from
Son moves to the electrode direction with opposite charges under electrostatic field, and removes electricity in solution by the adsorption of electrode
Property ion；
(4) present invention constructs the combination unit of the MCDI process bitter that activated carbon filter coupled solar drives, first
The major part removed in bitter by the adsorption of activated carbon in activated carbon filter and the Degradation of microorganism is organic
Thing and color, smell, the material such as taste, on the one hand improve effluent quality, on the other hand avoid Organic substance to MCDI electricity
The pollution of pole, MCDI is to salinity removal effect in raising, enables MCDI to run steadily in the long term；Pass through MCDI the most again
Electrochemical adsorption effect remove the salt ion in water；Therefore, activated carbon filter can be sent out with the group technology of MCDI
Wave double purifying water effect, improve effluent quality, simultaneously by the pretreatment of activated carbon, make whole system to continue the most steady
Fixed operation；
(5) pass through Activated Carbon Pretreatment, it is to avoid the organic contamination of MCDI, eliminate use chemical agent to MCDI
Cleaning process, save substantial amounts of auxiliary device, pipeline and adnexa, save substantial amounts of chemical agent, avoid chemistry simultaneously
Medicament is for the change of MCDI characteristic；And activated carbon filter can be reused by regeneration after absorption is saturated,
Regular maintenance is simple simultaneously, only need to periodically clean, and is suitable for remote mountain areas and uses.
(6) MCDI assembly is to be in series by single MCDI unit one by one, can select according to the concentration of bitter
Need the MCDI number of unit of series connection, reach to process variable concentrations bitter purpose.
(7) CDI is at desorption stage, can change the electrical of electrode, thus produce electromotive force, can resolve at electromotive force effect bottom electrode
The ion of original absorption, present in solution, counterions also can be attracted and adsorb simultaneously.Therefore, in this stage
Absorption and desorption are simultaneous, produce the incomplete regen-eration of electrode, then cause adsorption capacitance minimizing, recovery time to become
Short and next time purification phase residual ion can accelerate hinder ion entrance.In order to go to overcome this problem, at CDI
In introduce ion exchange membrane, constitute MCDI.In the desorption and regeneration stage, ion exchange membrane may be prevented from counterions
Near electrode, electrode is enable to regenerate completely.
(8) traditional MCDI can use the insulant such as nylon, filter paper, glass fibre to manufacture the separator of water stream channel,
But these materials can increase the resistance of MCDI, hinder ion transmission and increase the loss of energy.The present invention uses work
Property Carbon fibe is as the separator of MCDI, and the ionic conductivity that activated carbon surface is high can reduce ion and pass through water stream channel
Transmission resistance, the electric double layer that NACF is formed simultaneously has high ionic strength, can transmit as ion or electric charge
High-speed channel.
(9) present invention be a kind of easy operation, low-maintenance, without chemical agent, energy-conservation, water saving purifier and application side
Method, it is adaptable to water dispersion type, Rural water supply, domestic or commercial water purifier.
Accompanying drawing explanation
Fig. 1 is that the membrane capacitance deionization that in the present invention, activated carbon filter coupled solar drives processes showing of the device of bitter
Being intended to, wherein 1 is former water tank, and 2 is check-valves, and 3 is former water water intaking valve, and 4 is activated carbon filter, and 5 is drain valve,
6 store water tank for backwash water, and 7 is backwash valve, and 8 is intermediate water tank, and 9 is MCDI water intaking valve, and 10 is MCDI assembly,
11 is regeneration valve, and 12 store water tank for strong brine, and 13 is fluid flowmeter or water meter, and 14 is outlet valve, and 15 is clear water
Water tank, 16 is solar electric power supply system, and 21 is solar panel, and 22 is controller for solar, and 23 is accumulator,
24 is variable resistance；
Fig. 2 is the in-built schematic diagram of MCDI unit in the present invention, and wherein 17 is current collector, and 18 is electrode,
19 is ion exchange membrane, and 20 is water stream channel.
Detailed description of the invention
Technical solution of the present invention is not limited to act detailed description of the invention set forth below, and also include between each detailed description of the invention is any
Combination.
Detailed description of the invention one: combine shown in Fig. 1 and 2, present embodiment a kind of activated carbon filter coupled solar drives
Membrane capacitance deionization processes the device of bitter, and it includes former water tank 1, check-valves 2, former water water intaking valve 3, activated carbon
Filter tank 4, drain valve 5, backwash water store water tank 6, backwash valve 7, intermediate water tank 8, MCDI water intaking valve 9, MCDI
Assembly 10, regeneration valve 11, strong brine store water tank 12, fluid flowmeter or water meter 13, outlet valve 14, clear water water tank
15, solar electric power supply system 16；
Bottom described former water tank 1, outlet conduit arranges check-valves 2 and former water water intaking valve 3, and with activated carbon filter 4 top
Inlet channel is connected；Backwash water stores the water inlet pipe of water tank 6 and arranges drain valve 5, and intakes with activated carbon filter 4 top
Pipe is connected；The water inlet pipe of outlet conduit and backwash valve 7, outlet conduit and intermediate water tank 8 is set bottom activated carbon filter 4
It is connected；The outlet pipe of intermediate water tank 8 arranges MCDI water intaking valve 9, and is connected with the water inlet pipe of MCDI assembly 10；
Strong brine stores the water inlet pipe of water tank 12 and arranges regeneration valve 11, and is connected with the water inlet pipe of MCDI assembly 10；MCDI
The outlet pipe of assembly 10 arranges effusion meter or water meter 13, outlet valve 14, and is connected with clear water water tank 15 water inlet pipe.
The membrane capacitance deionization that in present embodiment, activated carbon filter coupled solar drives processes the device of bitter and uses too
Sun energy electric power system, and set up emergent municipal administration supply line；I.e. save power consumption, turn avoid because of rainy weather solar energy
Battery electricity shortage causes the problem that equipment is not normally functioning.
Present embodiment Central Plains water tank 1, check-valves 2, former water water intaking valve 3 and inlet channel constitute water inlet system；
MCDI assembly 10, regeneration valve 11, strong brine store water tank 12, solar electric power supply system 16 constitutes desalination system
System；
Fluid flowmeter or water meter 13, outlet valve 14, clear water water tank 15 constitute outlet system.
In present embodiment in Fig. 1 "--------" represent electric wire.
Detailed description of the invention two: present embodiment unlike detailed description of the invention one, described former water tank 1 and water inlet pipe
Road together with.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment unlike detailed description of the invention one or two, described clear water water tank 15
Outlet conduit is connected with water supply line.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: present embodiment unlike one of detailed description of the invention one to three, described activated carbon filter
The membrane capacitance deionization that coupled solar drives processes the device of bitter and uses solar electric power supply system 16, and sets up emergent
Municipal administration supply line.Other is identical with one of detailed description of the invention one to three.
Detailed description of the invention five: present embodiment unlike one of detailed description of the invention one to four, described activated carbon filter
4, its sky bed filtering velocity is 8m/h, and air-land combat is 10min, and active carbon layer thickness is 2.0m, and activated carbon particle size is
0.8～1.7mm；Use quartz sand as supporting layer, gradation composition by upper under be particle diameter be that the laying depth of 1～2mm is
100mm, particle diameter be the laying depth of 2～4mm be 100mm, particle diameter be the laying depth of 4～8mm be 100mm, grain
Footpath be the laying depth of 8～16mm be 100mm, particle diameter be the laying depth of 16～32mm be 150mm；Described centre
The capacity of water tank 8 is process the water yield 5%～10%.Other is identical with one of detailed description of the invention one to four.
Detailed description of the invention six: present embodiment unlike one of detailed description of the invention one to five, described MCDI group
Part 10 is in series by multiple identical MCDI unit, can process the bitter of variable concentrations；When processing the water yield and being excessive,
Can also be by the parallel running of multiple MCDI assembly 10；Each MCDI unit include current collector 17, electrode 18,
Ion exchange membrane 19, water stream channel 20；
Wherein the material of electrode 18 be activated carbon, carbon cloth, carbon fiber, carbon aerogels, CNT, graphite, Graphene,
The composite that one or more in ordered mesopore carbon, carbon-based material, white carbon black are become by any combination；
The width of water stream channel 20 is 1～3mm, separator fill, and the material of separator is NACF.Other with
One of detailed description of the invention one to five is identical.
The purpose using separator to fill in present embodiment is to prevent electrode 18 short circuit.
Detailed description of the invention seven: present embodiment is unlike one of detailed description of the invention one to six, described solar powered
System 16 includes solar panel 21, controller for solar 22, accumulator 23 and variable resistance 24.Other is with concrete
One of embodiment one to six is identical.
Detailed description of the invention eight: the membrane capacitance deionization that present embodiment activated carbon filter coupled solar drives processes bitter
The application process of device, sequentially include the following steps:
One, former water is directly entered former water tank 1 through water inlet pipe, controls inflow by the ball-cock assembly in former water tank 1, protects
Demonstrate,prove former water tank 1 constant level, and control activated-carbon filter by adjusting the difference in height between former water tank 1 and intermediate water tank 8
The membrane capacitance deionization that pond coupled solar drives processes the operating pressure of the device of bitter；
Two, the water outlet of former water tank 1 is entered by the water inlet on activated carbon filter 4 top, through activated carbon adsorption and micro-life
Intermediate water tank 8 is entered after thing Degradation；Activated carbon filter 4 carries out backwash after running 6 days, during backwash, closes former
Water water intaking valve 3, opens drain valve 5, makes the current of intermediate water tank 8 flow through activated carbon filter 4 from bottom to top, enters backwash
Water stores water tank 6, intermediate water tank 8 and backwash water and stores the power of the difference in height offer water movement between water tank 6, backwash
After completing, close drain valve 5, open former water water intaking valve 3, re-start filtration；
Three, MCDI assembly 10, solar electric power supply system 16 are connected into complete loops with wire, make MCDI assembly
The voltage applied on 10 electrodes 18 is 1.2V, and under voltage effect, water stream channel can form electrostatic field；During operation, middle
The water outlet of water tank 8 water inlet through MCDI assembly 10 under intermediate water tank 8 with clear water water tank 15 difference in height effect enters,
Carry out desalination processes；
Four, use the mode of reversal connection circuit to be desorbed: after MCDI assembly 10 runs 3 days, close MCDI water inlet
Valve 9, opens regeneration valve 11, allows the water in clear water water tank 15 store water tank 12 difference in height at clear water water tank 15 and strong brine
MCDI assembly 10 is flowed counterflow through, simultaneously by two electrodes 18 and the solar electric power supply system of MCDI assembly 10 under effect
16 reversal connections, the ion that desorption has adsorbed, the ion of desorption can store water tank 12 along with reverse current flow into strong brine,
After 2 hours regenerate, close regeneration valve 11, open MCDI water intaking valve 9, re-start desalination processes；
Five, running after 12 days, backwash water is stored water tank 6 and clears up, stored by strong brine in water tank 12 is dense simultaneously
Saline takes out and carries out natural evaporation process；
Six, MCDI assembly 10 uses periodically continued operation, each cycle to include absorption and two stages of desorption.
Present embodiment step 3 carries out desalination processes: the ion in water can migrate to the two poles of the earth under the effect of electrostatic field, sun
Ion is to movable cathode, and the anion Ghandler motion that faces south moves, time near ion migration to electrode, and can be gone by electrode adsorption
Remove；Before entering electrode, ion can be made to select further by ion exchange membrane, and cation exchange membrane only allows cation to lead to
Crossing, anion exchange membrane only allows anion to pass through, thus improves salinity clearance.
In present embodiment step 4 after MCDI assembly 10 runs 3 days, electrode is close because having adsorbed substantial amounts of ion
Saturated, cause salinity clearance dramatic decrease, it is therefore desirable to be desorbed.
In present embodiment step 6, MCDI assembly 10 cycle of operation and desorption time have with bitter water quality and operating condition
Close；At initial operating stage, need to go to detect electrical conductivity of water with conductivity meter, when quickly increasing occurs in water outlet conductivity can be with
Former water close to time, illustrate that the electrode of MCDI assembly 10 is in absorption saturation, need to be desorbed；Desorption stage,
Measure equally the electrical conductivity of reverse flow with conductivity meter, when with clear water water tank 15 water outlet conductivity close to time, can stop taking off
Attached；Through being run multiple times, so that it may determine MCDI assembly 10 cycle of operation and desorption time.
In present embodiment when in applying MCDI assembly 10, the voltage of hydrone is more than 1.23V, hydrone will be electrolysed
Become hydrogen atom and oxygen atom, say, that the electrostatic double layer potential difference that MCDI assembly 10 electrode is formed not can exceed that 1.23V,
But owing to other parts in MCDI assembly 10 there is also resistance, the voltage being therefore applied on electrode is usually no more than
1.5V；And MCDI assembly 10 is directly proportional to voltage for salinity clearance, the sun therefore can be adjusted as required
The variable resistance 24 of energy electric power system 16 obtains the input voltage of the MCDI assembly 10 being suitable for.
Present embodiment uses activated carbon filter to pass through activated carbon adsorption effect as the pretreatment of MCDI, activated carbon filter
Remove the most of Organic substance in bitter with microbial degradation, on the one hand improve effluent quality, on the other hand avoided
The pollution to MCDI electrode of the machine thing, MCDI is to salinity removal effect in raising, enables MCDI to take off steadily in the long term
Salt works；
This experiment method uses cycling service, adsorbs and desorption alternation, and desorption stage need not use chemical agent clear
Wash, save material consumption and energy consumption, avoid chemical agent for MCDI characteristic changing simultaneously.
Detailed description of the invention nine: present embodiment unlike detailed description of the invention eight, activated carbon filter 4 in step 2
Being cycling service, cycle of operation is 6 days, and backwashing time is 10min, and backwashing water intensity is 8L/ (s m2).Its
Its step and parameter are identical with detailed description of the invention seven.
Detailed description of the invention ten: present embodiment is unlike detailed description of the invention eight or nine, in step 4 on electrode 18
The voltage applied is 0.8～1.5V.Other step and parameter are identical with detailed description of the invention eight or nine.
Employing following example checking beneficial effects of the present invention:
Embodiment:
Shown in Fig. 1 and 2, the membrane capacitance deionization that a kind of activated carbon filter coupled solar drives processes the dress of bitter
Putting, it includes that former water tank 1, check-valves 2, former water water intaking valve 3, activated carbon filter 4, drain valve 5, backwash water store
Water tank 6, backwash valve 7, intermediate water tank 8, MCDI water intaking valve 9, MCDI assembly 10, regeneration valve 11, strong brine store up
Water tank 12, fluid flowmeter or water meter 13, outlet valve 14, clear water water tank 15, solar electric power supply system 16；
Bottom described former water tank 1, outlet conduit arranges check-valves 2 and former water water intaking valve 3, and with activated carbon filter 4 top
Inlet channel is connected；Backwash water stores the water inlet pipe of water tank 6 and arranges drain valve 5, and intakes with activated carbon filter 4 top
Pipe is connected；The water inlet pipe of outlet conduit and backwash valve 7, outlet conduit and intermediate water tank 8 is set bottom activated carbon filter 4
It is connected；The outlet pipe of intermediate water tank 8 arranges MCDI water intaking valve 9, and is connected with the water inlet pipe of MCDI assembly 10；
Strong brine stores the water inlet pipe of water tank 12 and arranges regeneration valve 11, and is connected with the water inlet pipe of MCDI assembly 10；MCDI
The outlet pipe of assembly 10 arranges effusion meter or water meter 13, outlet valve 14, and is connected with clear water water tank 15 water inlet pipe.
The membrane capacitance deionization that above-mentioned activated carbon filter coupled solar drives processes the application process of device of bitter, by with
Lower step is carried out:
One, former water is directly entered former water tank 1 through water inlet pipe, controls inflow by the ball-cock assembly in former water tank 1, protects
Demonstrate,prove former water tank 1 constant level, and control activated-carbon filter by adjusting the difference in height between former water tank 1 and intermediate water tank 8
The membrane capacitance deionization that pond coupled solar drives processes the operating pressure of the device of bitter；
Two, the water outlet of former water tank 1 is entered by the water inlet on activated carbon filter 4 top, through activated carbon adsorption and micro-life
Intermediate water tank 8 is entered after thing Degradation；Activated carbon filter 4 carries out backwash after running 6 days, during backwash, closes former
Water water intaking valve 3, opens drain valve 5, makes the current of intermediate water tank 8 flow through activated carbon filter 4 from bottom to top, enters backwash
Water stores water tank 6, intermediate water tank 8 and backwash water and stores the power of the difference in height offer water movement between water tank 6, backwash
After completing, close drain valve 5, open former water water intaking valve 3, re-start filtration；
Three, MCDI assembly 10, solar electric power supply system 16 are connected into complete loops with wire, make MCDI assembly
The voltage applied on 10 electrodes is 1.2V, and under voltage effect, water stream channel can form electrostatic field；During operation, middle water
The water outlet of case 8 water inlet through MCDI assembly 10 under intermediate water tank 8 with clear water water tank 15 difference in height effect enters,
Carry out desalination processes；
Four, use the mode of reversal connection circuit to be desorbed: after MCDI assembly 10 runs 3 days, close MCDI water inlet
Valve 9, opens regeneration valve 11, allows the water in clear water water tank 15 store water tank 12 difference in height at clear water water tank 15 and strong brine
MCDI assembly 10 is flowed counterflow through, simultaneously by two electrodes 18 and the solar electric power supply system of MCDI assembly 10 under effect
16 reversal connections, the ion that desorption has adsorbed, the ion of desorption can store water tank 12 along with reverse current flow into strong brine,
After 2 hours regenerate, close regeneration valve 11, open MCDI water intaking valve 9, re-start desalination processes；
Five, running after 12 days, backwash water is stored water tank 6 and clears up, stored by strong brine in water tank 12 is dense simultaneously
Saline takes out and carries out natural evaporation process；
Six, MCDI assembly 10 uses periodically continued operation, each cycle to include absorption and two stages of desorption.
Activated carbon filter 4 in the present embodiment, its sky bed filtering velocity is 8m/h, and air-land combat is 10min, activated carbon thickness
Degree is 2.0m, and activated carbon particle size is 1.2mm；Use quartz sand as supporting layer, gradation composition by upper under be that particle diameter is
The laying depth of 1mm is 100mm, particle diameter be the laying depth of 2mm be 100mm, particle diameter is that the laying of 4mm is thick
Degree for 100mm, particle diameter be the laying depth of 8mm be 100mm, particle diameter be the laying depth of 16mm be 150mm；
The capacity of described intermediate water tank 8 is process the water yield 8%；The material of electrode 18 is carbon fiber；In step 4 on electrode 18
The voltage applied is 1.2V.
The whole process of the present embodiment uses gravity stream, can save power cost；
The MCDI that activated carbon filter coupled solar in the present embodiment drives processes bitter combination unit and uses solar energy
Electric power system, and set up emergent municipal administration supply line；I.e. save power consumption, turn avoid because of rainy weather solaode
Electricity shortage causes the problem that equipment is not normally functioning；
The present embodiment use activated carbon filter as the pretreatment of MCDI, activated carbon filter by activated carbon adsorption effect with
The most of Organic substance in bitter is removed in microbial degradation, on the one hand improves effluent quality, on the other hand avoids organic
The thing pollution to MCDI electrode, MCDI is to salinity removal effect in raising, enables MCDI to carry out desalination steadily in the long term
Work；
This experimental example uses cycling service, adsorbs and desorption alternation, and desorption stage need not use chemical agent to clean,
Save material consumption and energy consumption, avoid chemical agent for MCDI characteristic changing simultaneously.
Test raw water quality is: pH is 7.9～8.7, CODMnIt is 0.91～1.32mg/L, F-It is 2.2～4.3mg/L,
NO3 -It is 7.9～15.3mg/L, SO4 2-It is 200～350mg/L, Cl-Being 1000～2000mg/L, water temperature is 13～26
℃；
After treatment, effluent quality is: pH is 6.6～8.1, CODMnIt is 0.64～0.79mg/L, F-It is 0.5～0.7mg/L,
NO3 -It is 3.8～6.2mg/L, SO4 2-It is 50～60mg/L, Cl-Being 210～230mg/L, water temperature is 13～26 DEG C；
CODMn、F-、NO3 -、SO4 2-、Cl-Clearance be respectively 30%～40%, 75%～85%, 50%～60%,
75%～83%, 79%～88.5%, after the equipment in the present embodiment processes, water outlet meets " drinking water sanitary standard "
(GB5749-2006) water quality requirement.
Claims (10)
1. the membrane capacitance deionization of an activated carbon filter coupled solar driving processes the device of bitter, it is characterised in that it
Including former water tank (1), check-valves (2), former water water intaking valve (3), activated carbon filter (4), drain valve (5), backwash
Water stores water tank (6), backwash valve (7), intermediate water tank (8), MCDI water intaking valve (9), MCDI assembly (10), again
Raw valve (11), strong brine store water tank (12), fluid flowmeter or water meter (13), outlet valve (14), clear water water tank (15),
Solar electric power supply system (16)；
Described former water tank (1) bottom outlet conduit arranges check-valves (2) and former water water intaking valve (3), and and activated-carbon filter
Pond (4) top inlet channel is connected；Backwash water stores the water inlet pipe of water tank (6) and arranges drain valve (5), and with activity
Carbon filtering pool (4) top water inlet pipe is connected；Activated carbon filter (4) bottom arranges outlet conduit and backwash valve (7), water outlet
Pipeline is connected with the water inlet pipe of intermediate water tank (8)；The outlet pipe of intermediate water tank (8) arranges MCDI water intaking valve (9),
And be connected with the water inlet pipe of MCDI assembly (10)；Strong brine stores the water inlet pipe of water tank (12) and arranges regeneration valve (11),
And be connected with the water inlet pipe of MCDI assembly (10)；The outlet pipe of MCDI assembly (10) arrange effusion meter or water meter (13),
Outlet valve (14), and be connected with clear water water tank (15) water inlet pipe.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that described former water tank (1) and inlet channel together with.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that the outlet conduit of described clear water water tank (15) is connected with water supply line.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that described activated carbon filter coupled solar drive membrane capacitance deionization process bitter device adopt
With solar electric power supply system (16), and set up emergent municipal administration supply line.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that described activated carbon filter (4), its sky bed filtering velocity is 8m/h, and air-land combat is 10min,
Active carbon layer thickness is 2.0m, and activated carbon particle size is 0.8～1.7mm；Using quartz sand as supporting layer, gradation composition is by upper
Under from be particle diameter be the laying depth of 1～2mm be 100mm, particle diameter be the laying depth of 2～4mm be 100mm, particle diameter
Be 4～8mm laying depth be 100mm, particle diameter be the laying depth of 8～16mm be 100mm, particle diameter is 16～32mm
Laying depth be 150mm；The capacity of described intermediate water tank (8) is process the water yield 5%～10%.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that described MCDI assembly (10) is in series by multiple identical MCDI unit, can process not
Bitter with concentration；When processing the water yield and being excessive, it is also possible to by the parallel running of multiple MCDI assembly (10)；Each
MCDI unit includes current collector (17), electrode (18), ion exchange membrane (19), water stream channel (20)；
Wherein the material of electrode (18) is activated carbon, carbon cloth, carbon fiber, carbon aerogels, CNT, graphite, graphite
The composite that one or more in alkene, ordered mesopore carbon, carbon-based material, white carbon black are become by any combination；
The width of water stream channel (20) is 1～3mm, separator fill, and the material of separator is NACF.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 1 drives processes bitter
Device, it is characterised in that described solar electric power supply system (16) include solar panel (21), controller for solar (22),
Accumulator (23) and variable resistance (24).
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most as claimed in claim 1 drives processes the dress of bitter
The application process put, it is characterised in that it sequentially includes the following steps:
One, former water is directly entered former water tank (1) through water inlet pipe, controls inflow by the ball-cock assembly in former water tank (1),
Ensure former water tank (1) constant level, and control by adjusting the difference in height between former water tank (1) and intermediate water tank (8)
The membrane capacitance deionization that preparing active carbon filter tank coupled solar drives processes the operating pressure of the device of bitter；
Two, the water outlet of former water tank (1) by activated carbon filter (4) top water inlet enter, through activated carbon adsorption with
And after microbiological deterioration, enter intermediate water tank (8)；Activated carbon filter (4) carries out backwash, backwash after running 6 days
Time, close former water water intaking valve (3), open drain valve (5), make the current of intermediate water tank (8) flow through activated carbon from bottom to top
Filter tank (4), enters backwash water and stores water tank (6), the difference in height between intermediate water tank (8) and backwash water storage water tank (6)
The power of water movement is provided, after backwash completes, closes drain valve (5), open former water water intaking valve (3), re-start
Filter；
Three, MCDI assembly (10), solar electric power supply system (16) are connected into complete loops with wire, make MCDI
The upper voltage applied of assembly (10) electrode (18) is 1.2V, and under voltage effect, water stream channel can form electrostatic field；Fortune
During row, the water outlet of intermediate water tank 8 under intermediate water tank (8) and clear water water tank (15) difference in height effect through MCDI assembly (10)
Water inlet enter, carry out desalination processes；
Four, use the mode of reversal connection circuit to be desorbed: after MCDI assembly (10) runs 3 days, close MCDI and enter
Water valve (9), opens regeneration valve (11), allows the water in clear water water tank (15) store water at clear water water tank (15) and strong brine
MCDI assembly (10) is flowed counterflow through, simultaneously by two electrodes of MCDI assembly (10) under case (12) difference in height effect
(18) with solar electric power supply system (16) reversal connection, the ion that desorption has adsorbed, the ion of desorption can be along with reverse water
Stream flows into strong brine and stores water tank (12), after 2 hours regenerate, closes regeneration valve (11), opens MCDI water intaking valve
(9), desalination processes is re-started；
Five, after running 12 days, backwash water is stored water tank (6) and clears up, strong brine is stored water tank (12) simultaneously
In strong brine take out carry out natural evaporation process；
Six, MCDI assembly (10) uses periodically continued operation, each cycle to include absorption and two stages of desorption.
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 8 drives processes bitter
The application process of device, it is characterised in that in step 2, activated carbon filter (4) is cycling service, and cycle of operation is 6
My god, backwashing time is 10min, and backwashing water intensity is 8L/ (s m2)。
The membrane capacitance deionization that a kind of activated carbon filter coupled solar the most according to claim 8 drives processes bitter salty
The application process of the device of water, it is characterised in that in step 4, the upper voltage applied of electrode (18) is 0.8～1.5V.
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| CN106830227A (en) * | 2017-03-01 | 2017-06-13 | 河海大学 | The membrane capacitance deionizer and processing method of a kind of circular treatment |
| CN107167206A (en) * | 2017-06-30 | 2017-09-15 | 深圳龙电电气股份有限公司 | A kind of water meter and its metering circuit |
| WO2020154720A1 (en) * | 2019-01-25 | 2020-07-30 | Carnegie Mellon University | High-flow, intact biomaterial-derived electrode for use in capacitive desalination |
| CN113003701A (en) * | 2021-02-08 | 2021-06-22 | 哈尔滨工业大学 | Lead-zinc mine tailing pond wastewater deep purification device with electric coupling biological filter |
| CN113023846A (en) * | 2021-03-01 | 2021-06-25 | 哈尔滨工业大学 | Small-sized electric adsorption system for drinking underground water treatment and use method thereof |
| CN113493263A (en) * | 2020-04-01 | 2021-10-12 | 佛山市云米电器科技有限公司 | Household water purifying device and control method thereof |
| CN113493267A (en) * | 2020-04-01 | 2021-10-12 | 佛山市云米电器科技有限公司 | Household water purifying device |
| WO2023029686A1 (en) * | 2021-08-30 | 2023-03-09 | 常州大学 | Photovoltaic direct-drive membrane capacitance electro-adsorption desalination system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830227A (en) * | 2017-03-01 | 2017-06-13 | 河海大学 | The membrane capacitance deionizer and processing method of a kind of circular treatment |
| CN107167206A (en) * | 2017-06-30 | 2017-09-15 | 深圳龙电电气股份有限公司 | A kind of water meter and its metering circuit |
| WO2020154720A1 (en) * | 2019-01-25 | 2020-07-30 | Carnegie Mellon University | High-flow, intact biomaterial-derived electrode for use in capacitive desalination |
| CN113493263A (en) * | 2020-04-01 | 2021-10-12 | 佛山市云米电器科技有限公司 | Household water purifying device and control method thereof |
| CN113493267A (en) * | 2020-04-01 | 2021-10-12 | 佛山市云米电器科技有限公司 | Household water purifying device |
| CN113003701A (en) * | 2021-02-08 | 2021-06-22 | 哈尔滨工业大学 | Lead-zinc mine tailing pond wastewater deep purification device with electric coupling biological filter |
| CN113023846A (en) * | 2021-03-01 | 2021-06-25 | 哈尔滨工业大学 | Small-sized electric adsorption system for drinking underground water treatment and use method thereof |
| WO2023029686A1 (en) * | 2021-08-30 | 2023-03-09 | 常州大学 | Photovoltaic direct-drive membrane capacitance electro-adsorption desalination system |
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