CN105347583A - Sea water desalination process through electric drive membrane and equipment of sea water desalination process - Google Patents
Sea water desalination process through electric drive membrane and equipment of sea water desalination process Download PDFInfo
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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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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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
- C02F2201/46—Apparatus for electrochemical processes
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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Abstract
The invention belongs to the field of sea water desalination and particularly relates to a sea water desalination process through an electric drive membrane and equipment of the sea water desalination process. The sea water desalination process includes the following steps that sea water in a sea water storage tank enters a microfiltration device and then enters an ultrafiltration membrane device; after treatment of the ultrafiltration membrane device, the content of germs and the content of escherichia coli at the water output position are detected, and whether the quality of output water meets the set requirement of quality of electrodialysis input water or not is judged; the power of a concentrated water lifting pump, the power of an electrode water lifting pump and the power of a fresh water lifting pump are controlled, and the output end of treated water in a first water tank is connected into a concentrated water tank, a fresh water tank and an electrode water tank; a concentrate water circulating pump, an electrode water input pump and a fresh water circulating pump input concentrated water in the concentrated water tank, electrode water in the electrode water tank and fresh water in the fresh water tank to an electric drive membrane device and then into an activated carbon adsorption device; the activated carbon adsorption device is connected into a drinking water tank, and flow and discharge are controlled through an external water tap to use the water. The sea water desalination process through the electric drive membrane and equipment of the sea water desalination process have the advantages that the total system desalting rate is 98.8% or more, energy consumption is about 7kWh per ton of water, and industrial application and popularization is facilitated.
Description
Technical field
The invention belongs to field of seawater desalination, be specifically related to a kind of electric drive film desalination process and equipment thereof.
Background technology
Along with the fast development of China's economy, water resources consumption is multiplied, Freshwater resources wretched insufficiency, and coastal cities have abundant seawater resources, should make full use of seawater resources, one of important channel lack sea water desaltination as solution fresh water.As the increment technique of increasing income of water resources, sea water desaltination has become the important channel solving global water resources crisis.Although China's sea water desaltination has tentatively possessed industrialized development condition, the exploitation manufacturing capacity of research level, innovation ability, equipment, system design and the aspect such as integrated with still have larger gap abroad.
Traditional technology sea water desalting equipment technique is tediously long, and pre-treatment in early stage, as intermittent type chlorination technique, adds Scale inhibitors technique, complex operation, working cost is high, and in pre-treatment, bacteria-eliminating efficacy is poor, film easily becomes the hotbed of bacteria breed, seriously reduces the life-span of film and reduces the treatment effect of film.
Summary of the invention
According to the deficiencies in the prior art, the invention provides a kind of novel high antipollution, long service life, the electric drive film desalination process that running cost is low and equipment thereof.
A kind of electric drive film desalination process disclosed in this invention, following steps:
(1) in seawater water tank, saltiness is that the seawater of 32950-34650mg/L enters in micro-filtration through seawater lift pump, and keep water intake velocity at 200-250L/h, the residence time is 15-20min, delivery turbidity be no more than 0.1NTU laggard enter ultra-filtration membrane device; Now the saltiness of seawater is 31940-32350mg/L, keeps water intake velocity at 195-200L/h, residence time 15-20min;
(2) through ultra-filtration membrane device process, detect bacterium and the E. CoIi content of water outlet place, judge whether effluent quality meets the electrodialysis influent quality requirement of setting; Do not meet setting water quality requirement then repeating step (2), meet setting water quality requirement and then carry out step (3);
(3) dense water lift pump, pole water lift pump and fresh water lift pump power is controlled, the output terminal processing water in first water tank is passed in dense water tank, fresh water tanks and pole water tank respectively, makes the flow of dense water tank, fresh water tanks and pole water tank at 60-70L/h;
(4) current density regulating and controlling rectifier is 25-30mA/cm
2, dense water-circulating pump by the dense water in dense water tank, pole water intake pump by the pole water in the water tank of pole and fresh water circulating pump by the freshwater input electric drive film device in fresh water tanks; Make it after the process of electric drive film device, by concentrate recirculation to dense water tank, fresh water is back to fresh water tanks, the pole water of output is directly discharged; Control the water outlet saltiness of fresh water tanks within 400mg/L after enter absorbent charcoal adsorber;
(5) absorbent charcoal adsorber controls the saltiness of water outlet place within 400mg/L, passes in potable water tank, controls to banish use by external drinking water faucet.
The ratio of desalinization of step (4) is preferably 98.8-99.3%.
The integrated equipment that electric drive film desalination process is used, this equipment comprises seawater water tank, and the output terminal of seawater water tank is connected with seawater lift pump, micro-filtration, ultra-filtration membrane device, backwash water pump and the first water tank in turn; Dense for ultrafiltration water directly discharges by the output terminal of ultra-filtration membrane device, and ultrafiltration is produced water and directly entered the first water tank; Described first water tank is provided with three road output terminals, and the first output terminal is connected with dense water lift pump, dense water tank and dense water-circulating pump in turn; Dense for ultrafiltration water directly discharges by the output terminal of dense water tank; Second output terminal is connected with pole water lift pump, pole water tank and pole water intake pump in turn; 3rd output terminal is connected with fresh water lift pump, fresh water tanks and fresh water circulating pump in turn; Described dense water-circulating pump, pole water intake pump are connected with the electric drive film device that rectifier controls with the output terminal of fresh water circulating pump; Fresh water to dense water tank, is back to fresh water tanks, is directly discharged by the pole water of output by concentrate recirculation by the output terminal of electric drive film device; The output terminal of described fresh water tanks is connected with potable water tank by absorbent charcoal adsorber, and potable water tank outer end is provided with drinking water faucet.
Preferred version is as follows:
The microfiltration membrane aperture of micro-filtration is 0.02-10 μm.
The ultra-filtration membrane of ultra-filtration membrane device is polyvinylidene difluoride (PVDF) material, surface aggregate anti-pollution layer, and ultra-filtration membrane aperture is 0.01 μm.
Absorbent charcoal material granularity in absorbent charcoal adsorber is 4-30 order, and material adopts bamboo material, and tamped density is 0.50-0.65g/mL.
Equipment pipeline is provided with magnetic valve.
Equipment adopts PLC to control.
Principle of work: seawater from seawater water tank by lift pump through micro-filtration, the particle and the supramolecular material that particle diameter are greater than microfiltration membrane aperture are trapped on face, prevent larger material from affecting next step ultrafiltration effect; Enter in ultra-filtration membrane device by the seawater of micro-filtration, retain the colloidalmaterial in former seawater, macromolecular substance, particle, bacterium, virus and protozoon etc., the dense water of ultrafiltration directly discharges, and ultrafiltration is produced water and entered the first water tank; A water part in first water tank is cleaned ultra-filtration membrane device by backwash water pump, a part enters dense water tank, pole water tank and fresh water tanks respectively by dense water lift pump, pole water lift pump and fresh water lift pump, wherein, water in dense water tank, pole water tank and fresh water tanks directly enters electric drive membrane stack, electric drive film in heap film is homogeneous ion-exchange membrane, electrode adopts high current density electrode, and by rectifier power supply, electric drive film membrane stack isolates fresh water, dense water and pole water; Dense water, fresh water circulate respectively and enter dense water tank and fresh water tanks, the dense water of part directly discharges from dense water tank, and pole water directly discharges from electric drive film membrane stack, and fresh water enters absorbent charcoal adsorber by fresh water tanks, enter potable water tank by gac, namely directly drink by drinking water spigot.
Wherein, ultra-filtration membrane adopts material to be the high pollution-resistant membrane of polyvinylidene difluoride (PVDF), can effectively prevent bacterium, the delay of microorganism grows, and can retain suspended substance in seawater, algae and unwanted bacteria etc.Water transport coefficient>=the 115L/m of film
2h0.1MPa, there is higher water flux, there is good breaking tenacity and extension at break, fracture of wire phenomenon is not easily there is in use procedure, there is the performances such as good acid and alkali-resistance, organic solvent-resistant, grease resistance, light aging resisting, multiple method therefore can be used repeatedly to clean, to remove pollutent, recover membrane flux, increase the service life.The electric drive film that the present invention adopts is homogeneous ion-exchange membrane, and producing water ratio and ratio of desalinization are stablized, and it is high that frequently pole-reversing electroosmosis system also has level of automation, the features such as remarkable in economical benefits.
Advantage of the present invention: desalination, concentrated, be separated and can keep high current efficiency, significantly improve selectivity and the validity of membrane separation technique, decrease the concentration diffusion of electrical leakage quantity and film, substantially increase current efficiency.The total ratio of desalinization of system is more than 98.8%, and energy consumption, about 7kWh/t water, is convenient to industrial applying.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention;
In figure, 1, seawater water tank, 2, seawater lift pump, 3, micro-filtration, 4, ultra-filtration membrane device, 5, backwash water pump, 6, the first water tank, 7, dense water lift pump, 8, pole water lift pump, 9, fresh water lift pump, 10, dense water tank, 11, pole water tank, 12, fresh water tanks, 13, dense water-circulating pump, 14, pole water intake pump, 15, fresh water circulating pump, 16, rectifier, 17, electric drive film device, 18, absorbent charcoal adsorber, 19, potable water tank, 20, drinking water faucet, A, ultrafiltration concentrated water discharge, B, pole water discharge.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail, but the present invention is not limited to specific embodiment.
Embodiment 1:
A kind of electric drive film desalination process, step is as follows:
(1) in seawater water tank 1, saltiness is that the seawater of 32950mg/L enters in micro-filtration 3 through seawater lift pump 2, and keep water intake velocity at 250L/h, the residence time is 15min, delivery turbidity be no more than 0.1NTU laggard enter ultra-filtration membrane device 4; Now the saltiness of seawater is 31940mg/L, keeps water intake velocity at 200L/h, residence time 15min;
(2) process through ultra-filtration membrane device 4, detect bacterium and the E. CoIi content of water outlet place, judge whether effluent quality meets the electrodialysis influent quality requirement of setting; Do not meet setting water quality requirement then repeating step (2), meet setting water quality requirement and then carry out step (3);
(3) dense water lift pump 7, pole water lift pump 8 and fresh water lift pump 9 power is controlled, the output terminal processing water in first water tank 6 is passed in dense water tank 10, fresh water tanks 12 and pole water tank 11 respectively, makes the flow of dense water tank 10, fresh water tanks 12 and pole water tank 11 at 60L/h;
(4) current density regulating and controlling rectifier 16 is 25mA/cm
2, dense water-circulating pump 13 by the dense water in dense water tank 10, pole water intake pump 14 by the pole water in pole water tank 11 and fresh water circulating pump 15 by the freshwater input electric drive film device 17 in fresh water tanks 12; Make it after electric drive film device 17 processes, by concentrate recirculation to dense water tank 10, fresh water is back to fresh water tanks 12, by the pole water discharge B of output; Control the water outlet saltiness of fresh water tanks 12 within 400mg/L after enter absorbent charcoal adsorber 18; The ratio of desalinization of step (4) is 98.8%.
(5) absorbent charcoal adsorber 18 controls the saltiness of water outlet place within 400mg/L, passes in potable water tank 19, controls to banish use by external drinking water faucet 20.
Embodiment 2:
A kind of electric drive film desalination process, step is as follows:
(1) in seawater water tank 1, saltiness is that the seawater of 34650mg/L enters in micro-filtration 3 through seawater lift pump 2, and keep water intake velocity at 200L/h, the residence time is 20min, delivery turbidity be no more than 0.1NTU laggard enter ultra-filtration membrane device 4; Now the saltiness of seawater is 32350mg/L, keeps water intake velocity at 195L/h, residence time 20min;
(2) process through ultra-filtration membrane device 4, detect bacterium and the E. CoIi content of water outlet place, judge whether effluent quality meets the electrodialysis influent quality requirement of setting; Do not meet setting water quality requirement then repeating step (2), meet setting water quality requirement and then carry out step (3);
(3) dense water lift pump 7, pole water lift pump 8 and fresh water lift pump 9 power is controlled, the output terminal processing water in first water tank 6 is passed in dense water tank 10, fresh water tanks 12 and pole water tank 11 respectively, makes the flow of dense water tank 10, fresh water tanks 12 and pole water tank 11 at 70L/h;
(4) current density regulating and controlling rectifier 16 is 25mA/cm
2, dense water-circulating pump 13 by the dense water in dense water tank 10, pole water intake pump 14 by the pole water in pole water tank 11 and fresh water circulating pump 15 by the freshwater input electric drive film device 17 in fresh water tanks 12; Make it after electric drive film device 17 processes, by concentrate recirculation to dense water tank 10, fresh water is back to fresh water tanks 12, by the pole water discharge B of output; Control the water outlet saltiness of fresh water tanks 12 within 400mg/L after enter absorbent charcoal adsorber 18; The ratio of desalinization of step (4) is 99.3%.
(5) absorbent charcoal adsorber 18 controls the saltiness of water outlet place within 400mg/L, passes in potable water tank 19, controls to banish use by external drinking water faucet 20.
Embodiment 3:
A kind of electric drive film sea water desaltination integrated equipment, this setting comprises seawater water tank 1, and the output terminal of seawater water tank 1 is connected with seawater lift pump 2, micro-filtration 3, ultra-filtration membrane device 4, backwash water pump 5 and the first water tank 6 in turn; The output terminal of ultra-filtration membrane device is by ultrafiltration concentrated water discharge A, and ultrafiltration is produced water and directly entered the first water tank 6; Described first water tank 6 is provided with three road output terminals, and the first output terminal is connected with dense water lift pump 7, dense water tank 10 and dense water-circulating pump 13 in turn; The output terminal of dense water tank 10 is by ultrafiltration concentrated water discharge A; Second output terminal is connected with pole water lift pump 8, pole water tank 11 and pole water intake pump 14 in turn; 3rd output terminal is connected with fresh water lift pump 9, fresh water tanks 12 and fresh water circulating pump 15 in turn; Described dense water-circulating pump 13, pole water intake pump 14 are connected with the electric drive film device 17 that rectifier 16 controls with the output terminal of fresh water circulating pump 15; Fresh water to dense water tank 10, is back to fresh water tanks 12 by concentrate recirculation by the output terminal of electric drive film device 17, by pole water discharge B; The output terminal of described fresh water tanks 12 is connected with potable water tank 19 by absorbent charcoal adsorber 18, and potable water tank 19 outer end is provided with drinking water faucet 20.
The microfiltration membrane aperture of micro-filtration 3 is 0.02-10 μm.
The ultra-filtration membrane of ultra-filtration membrane device 4 is polyvinylidene difluoride (PVDF) material, surface aggregate anti-pollution layer, and ultra-filtration membrane aperture is 0.01 μm.
Absorbent charcoal material granularity in absorbent charcoal adsorber 18 is 4-30 order, and material adopts bamboo material, and tamped density is 0.50-0.65g/mL.
Equipment pipeline is provided with magnetic valve.
Equipment adopts PLC to control.
Principle of work: seawater passes through lift pump 2 through micro-filtration 3 from seawater water tank 1, and the particle and the supramolecular material that particle diameter are greater than microfiltration membrane aperture are trapped on face, prevent larger material from affecting next step ultrafiltration effect; Enter in ultra-filtration membrane device 4 by the water of micro-filtration 3, retain the colloidalmaterial in stoste, macromolecular substance, particle, bacterium, virus and protozoon etc., the dense water of ultrafiltration directly discharges, and ultrafiltration is produced water and entered the first water tank 6; A water part in first water tank 6 is cleaned by backwash water pump 5 pairs of ultra-filtration membrane device 4, a part enters dense water tank 10, pole water tank 11 and fresh water tanks 12 respectively by dense water lift pump 7, pole water lift pump 8 and fresh water lift pump 9, wherein, water in dense water tank 10, pole water tank 11 and fresh water tanks 12 directly enters electric drive membrane stack, electric drive film in heap film is homogeneous ion-exchange membrane, electrode adopts high current density electrode, powered by rectifier 16, electric drive film membrane stack isolates fresh water, dense water and pole water; Dense water, fresh water circulate respectively and enter dense water tank 10 and fresh water tanks 12, the dense water of part directly discharges from dense water tank 10, pole water directly discharges from electric drive film membrane stack, fresh water enters absorbent charcoal adsorber 18 by fresh water tanks 12, enter potable water tank 19 by gac, namely directly drink by drinking water spigot.
Wherein, ultra-filtration membrane adopts material to be the high pollution-resistant membrane of polyvinylidene difluoride (PVDF), can effectively prevent bacterium, the delay of microorganism grows, and can retain suspended substance in seawater, algae and unwanted bacteria etc.Water transport coefficient>=the 115L/m of film
2h0.1MPa, there is higher water flux, there is good breaking tenacity and extension at break, fracture of wire phenomenon is not easily there is in use procedure, there is the performances such as good acid and alkali-resistance, organic solvent-resistant, grease resistance, light aging resisting, multiple method therefore can be used repeatedly to clean, to remove pollutent, recover membrane flux, increase the service life.The electric drive film that the present invention adopts is homogeneous ion-exchange membrane, and producing water ratio and ratio of desalinization are stablized, and it is high that frequently pole-reversing electroosmosis system also has level of automation, the features such as remarkable in economical benefits.
Advantage of the present invention: desalination, concentrated, be separated and can keep high current efficiency, significantly improve selectivity and the validity of membrane separation technique, decrease the concentration diffusion of electrical leakage quantity and film, substantially increase current efficiency.The total ratio of desalinization of system is more than 98.8%, and energy consumption, about 7kWh/t water, is convenient to industrial applying.
Below the present invention be described in detail, the above, be only the preferred embodiment of the present invention, when not limiting the scope of the present invention, namely allly does impartial change according to the application's scope and modify, all should still belong in covering scope of the present invention.
Claims (8)
1. an electric drive film desalination process, is characterized in that following steps:
(1) in seawater water tank, saltiness is that the seawater of 32950-34650mg/L enters in micro-filtration through seawater lift pump, and keep water intake velocity at 200-250L/h, the residence time is 15-20min, delivery turbidity be no more than 0.1NTU laggard enter ultra-filtration membrane device; Now the saltiness of seawater is 31940-32350mg/L, keeps water intake velocity at 195-200L/h, residence time 15-20min;
(2) through ultra-filtration membrane device process, detect bacterium and the E. CoIi content of water outlet place, judge whether effluent quality meets the electrodialysis influent quality requirement of setting; Do not meet setting water quality requirement then repeating step (2), meet setting water quality requirement and then carry out step (3);
(3) dense water lift pump, pole water lift pump and fresh water lift pump power is controlled, the output terminal processing water in first water tank is passed in dense water tank, fresh water tanks and pole water tank respectively, makes the flow of dense water tank, fresh water tanks and pole water tank at 60-70L/h;
(4) current density regulating and controlling rectifier is 25-30mA/cm
2, dense water-circulating pump by the dense water in dense water tank, pole water intake pump by the pole water in the water tank of pole and fresh water circulating pump by the freshwater input electric drive film device in fresh water tanks; Make it after the process of electric drive film device, by concentrate recirculation to dense water tank, fresh water is back to fresh water tanks, the pole water of output is directly discharged; Control the water outlet saltiness of fresh water tanks within 400mg/L after enter absorbent charcoal adsorber;
(5) absorbent charcoal adsorber controls the saltiness of water outlet place within 400mg/L, passes in potable water tank, controls to banish use by external drinking water faucet.
2. a kind of electric drive film desalination process according to claim 1, is characterized in that: the ratio of desalinization of described step (4) is 98.8-99.3%.
3. the integrated equipment that an electric drive film desalination process according to claim 1 is used, this equipment comprises seawater water tank, it is characterized in that: the output terminal of seawater water tank is connected with seawater lift pump, micro-filtration, ultra-filtration membrane device, backwash water pump and the first water tank in turn; Dense for ultrafiltration water directly discharges by the output terminal of ultra-filtration membrane device, and ultrafiltration is produced water and directly entered the first water tank; Described first water tank is provided with three road output terminals, and the first output terminal is connected with dense water lift pump, dense water tank and dense water-circulating pump in turn; Dense for ultrafiltration water directly discharges by the output terminal of dense water tank; Second output terminal is connected with pole water lift pump, pole water tank and pole water intake pump in turn; 3rd output terminal is connected with fresh water lift pump, fresh water tanks and fresh water circulating pump in turn; Described dense water-circulating pump, pole water intake pump are connected with the electric drive film device that rectifier controls with the output terminal of fresh water circulating pump; Fresh water to dense water tank, is back to fresh water tanks, is directly discharged by the pole water of output by concentrate recirculation by the output terminal of electric drive film device; The output terminal of described fresh water tanks is connected with potable water tank by absorbent charcoal adsorber, and potable water tank outer end is provided with drinking water faucet.
4. a kind of electric drive film sea water desaltination integrated equipment according to claim 3, is characterized in that: the microfiltration membrane aperture of described micro-filtration is 0.02-10 μm.
5. a kind of electric drive film sea water desaltination integrated equipment according to claim 3, is characterized in that: the ultra-filtration membrane of described ultra-filtration membrane device is polyvinylidene difluoride (PVDF) material, surface aggregate anti-pollution layer, and ultra-filtration membrane aperture is 0.01 μm.
6. a kind of electric drive film sea water desaltination integrated equipment according to claim 3, is characterized in that: the absorbent charcoal material granularity in described absorbent charcoal adsorber is 4-30 order, and material adopts bamboo material, and tamped density is 0.50-0.65g/mL.
7. a kind of electric drive film sea water desaltination integrated equipment according to claim 3, is characterized in that: described equipment pipeline is provided with magnetic valve.
8. a kind of electric drive film sea water desaltination integrated equipment according to claim 3, is characterized in that: described equipment adopts PLC to control.
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CN106277521A (en) * | 2016-08-30 | 2017-01-04 | 杭州上拓环境科技股份有限公司 | A kind of dimehypo recycling mother solution reclaiming system based on membrane technology and technique |
CN106334451A (en) * | 2016-10-17 | 2017-01-18 | 厦门市科宁沃特水处理科技股份有限公司 | Process for electrodialysis low sodium treatment of aquatic product sauce |
CN111252869A (en) * | 2020-02-24 | 2020-06-09 | 鹭滨环保科技(上海)股份有限公司 | Treatment system and method for improving drainage water quality of landfill leachate |
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