CN106145411A - A kind of portable lightweight individual's seawater desalination system - Google Patents

A kind of portable lightweight individual's seawater desalination system Download PDF

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Publication number
CN106145411A
CN106145411A CN201510162377.1A CN201510162377A CN106145411A CN 106145411 A CN106145411 A CN 106145411A CN 201510162377 A CN201510162377 A CN 201510162377A CN 106145411 A CN106145411 A CN 106145411A
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membrane
pressure
seawater
carbon fiber
seawater desalination
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肖凯军
朱子沛
朱良
申益
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Individual
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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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • 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
    • Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
    • 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

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Abstract

The invention belongs to seawater desalination and carbon fiber new material technology field, relate to the carbon fibre material seawater desalination system that a kind of lightweight is convenient for carrying and energy consumption is low, including ternary gradient tubular membrane pretreatment system, desalination system, power-supply system, energy-storage system and power conversion switch.Required assembly includes: supply-water pump, ternary gradient tubular ultrafiltration membrane module, carbon fiber high-pressure pump, carbon fiber reverse osmosis membrane assembly, rechargeable battery, power control system, control valve, pressure and flow indication system, carrying case and stainless steel connect pipeline etc..The present invention is a kind of lightweight, easy to carry, antipollution, service life length, the Portable, personal seawater desalination system of chargeable continuous use.

Description

A kind of portable lightweight individual's seawater desalination system
Technical field
The present invention relates to a kind of lightweight, individual's seawater desalination system portable, resistant to pollution, belong to seawater desalination and carbon fiber new material technology field.
Background technology
With the transformation of people's life idea, being in urban job family, or the young man of liberty risk, more yearning for the Nature, then jungle expedition, the people of field encampment gets more and more.But away from the natural scenic spot in city it is difficult to ensure that the cleaning of water resource, the attitude making every effort to travel with light luggage and few attendants allows the water purifier carrying heaviness and substantial amounts of drinking water become impossible, pursue the people of higher quality of the life water resource is proposed much sooner with high-quality requirement.How to gather materials on the spot, ensure that the drinking water continuation of the journey of clean enough becomes a great problem in time.China is the country that a natural calamity takes place frequently, in reconstruction after calamity, it is again the most important thing that the army how allowing the victims of the disaster and the disaster relief drinks clean drinking water, matter transportation takes time and effort, suit measures to local conditions, gather materials on the spot, utilize local water resource, processing different quality according to demand, carry out efficient water resource purifying is a big bottleneck.
The gross amount of water resources of China is in prostatitis, the whole world, but water resource is far away not as good as developed country per capita.Day by day serious with environmental pollution, the freshwater resources of China's cleaning are more poor.Seawater is rationally processed, desalinizes seawater and become the effective ways of a kind of a large amount of acquisition fresh water.Both economical, technology maturation in the existing mode desalinizing seawater, be widely used have evaporation and hyperfiltration.Evaporation relates to the phase transformation of material, thus power consumption is high.Hyperfiltration is not related to phase transformation by contrast, consumes energy low.
The patent of individual's seawater desalination system have not been reported at present, and existing seawater desalination system all has larger volume, is suitable for industrialized production, it is impossible to accomplish to be convenient for carrying.And existing individual's water cleaning systems, then it is difficult to accomplish desalination rapidly and efficiently, does not possess the ability desalinizing seawater, and the membrane module being used for filtering easily is contaminated, it is impossible to accomplish automatically to clear up, shorten the service life of film.
How to make purifier small and exquisite portable, accomplish instant and quick desalinization, produce continuously and ensure that enough water yields are significant.Therefore, Portable multifunctional purifying technology has wide sight in China, and the market demand is very big.
Content of the invention
The problems such as the volume generally existing for current seawater desalination system is heavy, inconvenient to carry, membrane lifetime is short, it is an object of the invention to provide a kind of lightweight, easy to carry, antipollution, service life length, the Portable, personal seawater desalination system of chargeable continuous use.
For achieving the above object, the present invention adopts the following technical scheme that.
The carbon fibre material seawater desalination system that a kind of lightweight is convenient for carrying and energy consumption is low, including ternary gradient tubular membrane pretreatment system, desalination system, power-supply system, energy-storage system and power conversion switch.Required assembly includes: supply-water pump, ternary gradient tubular ultrafiltration membrane module, carbon fiber high-pressure pump, carbon fiber reverse osmosis membrane assembly, rechargeable battery, power control system, control valve, pressure and flow indication system, carrying case and stainless steel connect pipeline etc..
Described ternary gradient tubular membrane pretreatment system includes: arrival end filtering head, supply-water pump, three layers of gradient tubular membrane component, Pressure gauge, pressure-regulating valve door, stainless steel pipes of intaking, permeable stainless steel pipes, waste water stainless steel pipes.
Described ingress filtering head, containing stainless steel filter screen.Being immersed in filtering head in pending seawater, when system work, when in seawater intake line, filter tip can stop bigger material to enter in rubber tube with current effectively, prevents pipeline blockage.Seawater, after supply-water pump pressurization, sends into pretreatment membrane module.
Described ternary gradient tubular membrane pretreatment system uses ternary gradient tubular ultrafiltration membrane module, see Fig. 1, it is a kind of hyperfiltration membrane assembly with gradient aperture distributed architecture, and combine Dynamic Separation process, contamination resistance is good, it is not easily blocked, flux is 3-4 times of traditional hollow, Fig. 2 is tubular membrane and traditional hollow flux versus time curve in the present invention, and service life is more than 5～7 times of conventional tubular, after ternary gradient tubular ultrafiltration membrane module is processed, hydrone and dissolving salt pass through selective membrane, and easily cause the macromolecular colloid of desalination membrane blocking, algae, the materials such as silt are then retained down, as system discharged by concentrate.Through pretreated seawater, not only protect polluted seawater desalination film, extend the service life of sea water desalination membrane, also increase the membrane flux of sea water desalination membrane.
Described ternary gradient tubular membrane is the high intensity PVDF sintering tubular ultra-filtration membrane of ternary gradient-structure, is characterised by being made up of three-decker, and outermost layer (supporting layer) and intermediate layer (transition zone) are PVDF sinter layers, and innermost layer (separating layer) is Modification on Al2O3/ PVDF modified membrane.Utilize the PVDF particle that granularity is different to prepare supporting layer and the transition zone of different pore size by sintering process, form modified Nano Al by thermal induced phase transition method2O3/ PVDF separating layer, is gradient distribution inside-out by separating aperture, forms the construction of the ternary structural of milipore filter.The aperture of separating layer is 0.02～0.05um, and thickness is 0.1～0.2mm；The pore size filter of transition zone is 1～10um, and thickness is 5～10 times of separating layer thickness；The aperture of supporting layer is 10～20um, and thickness is 50～100 times of separating layer thickness.Ternary gradient tubular ultra-filtration membrane can effectively retain algae and microorganism in seawater, and removes silt in seawater, suspension, macromolecular colloid material etc..
Described dynamic split system, the ultrafiltration membrane pipe of the one-in-and-two-out with rinsing for the employing, a diameter of 4～6cm of membrane tube, a length of 25～30cm.Seawater enters ternary gradient tubular membrane component through supply-water pump, permeate enters subordinate's desalination system by permeable mouth, and the algae retaining, microorganism, larger molecular organics etc. discharge system by concentrating mouth, concentrated solution outlet after membrane module disposes a pressure-regulating valve door, the operating pressure of regulation ternary gradient tubular membrane component, operating pressure scope 0.2～0.3MPa, the membrane flux of permeate is 200～300 ls/h.The input voltage 24V of supply-water pump, maximum pressure 0.4MPa, maximum stream flow 400 ls/h.This dynamic split system can remove the impurity being attached to film surface timely and effectively.Improve separative efficiency, extend the service life of film.
Described desalination system is made up of high-pressure pump, carbon fiber desalinization membrane module, septum valve, Pressure gauge, spinner flowmeter, pressure piping and low pressure pipeline etc..After pretreated seawater is via high-pressure pump pressurization, from the inlet end input of carbon fiber desalinization membrane module, by high voltage adjusting valve, carry out desalination under 5～7MPa downforce, desalination water is collected by flowmeter, and concentrate salt solution and pass through concentrate pipeline, accumulate discharge of wastewater house steward with the concentration tube of pretreatment system and discharge.In running, the adjustment of operating pressure can be carried out according to high voltage adjusting valve, it is ensured that the normal work of carbon fiber desalinization membrane module and the stable product water of fresh water.
In described desalination system, membrane tube uses high intensity, light-weighted carbon fiber pipe.A diameter of 5～the 7cm of carbon fiber seawater desalination pipe, a length of 35～40cm.The commonly used fiberglass of the membrane tube of same size in existing desalination system, weight 1200～1500 grams, and the carbon fiber pipe that we prepare, membrane tube weight is only 120～140g, maximum burst pressure 20MPa, alleviates the weight of membrane module greatly.Carbon fiber pipe uses nylon inner lining, nylon inner lining thickness 3～5mm.Then, it is wound around carbon fiber in the outside of nylon inner lining, use bi-component epoxide-resin impregnation of carbon fibers, at a temperature of 60～80 DEG C, carry out curing molding, thickness 3～5 mm of carbon fiber.High-pressure pump uses stainless steel plunger pump head, and input voltage 24V, maximum pressure is up to 10MPa, flow 1～3 liter/min.Take into full account the impact of weight in the type selecting of supply-water pump and high-pressure pump, on the premise of performance reaches matching requirements, all select the accessory of lighter weight.Except the pipeline being connected with high-pressure installation, remaining connecting line all uses silicone tube, mitigates the weight of whole device, it is achieved maximum lightweight.For the normal seawater of salt concentration 3.5%, the desalination system 98～99% of native system, aquifer yield 12～14 ls/h.
Described power-supply system uses direct-current switch power supply, input voltage: 90～132 VAC/180～264VAC 47～63 Hz(V)；Input current: 6.5A/115V 4A/230V(A)；Output voltage: 24V；Power output: 350W.The feature of described power-supply system is: the whole world is suitable for ac-input power supply, PWM control and regulation, built-in direct current electric fan forced air cooling, internal fan switch control rule, operating frequency 25KHz, protection feature: short circuit/overload/overvoltage.Power-supply system can external 220V AC power, output voltage 24V, give supply-water pump and high-pressure pump energy supply, energy-storage system is charged simultaneously.
Described energy-storage system uses portable lithium battery group, and battery types can use LiFePO4 battery core or LiMn2O4 battery core or ternary material battery core, rated voltage voltage 24V, rated capacity 8Ah, can use more than 2 groups portable lithium battery groups.In the wild, may utilize solar energy or wind energy generates electricity, electric energy is existed energy-storage system.In the present invention, energy-storage system can be with solar panels, wind generator connects, and converting distribution system by energy is electric energy by solar energy and wind energy transformation, after being converted into 24V direct current, energy-storage system is charged, the offer electric energy being supply-water pump and high-pressure pump by energy-storage system.
Described power conversion switch uses a kind of device for switching being available for two-way or the above Power convert of two-way, is formed by more piece contact combinations, in the electrical apparatus, is used for non-frequently connecting and disjunction circuit, switches on power and load.When inputting without external 220V AC power, by selecting power conversion switch, energy-storage battery is selected to be powered supply-water pump and high-pressure pump.
Described tubular membrane pretreatment system, desalination system, power-supply system, energy-storage system and power conversion switch, supply-water pump, high-pressure pump, being all fixed in Portable luggage with drive screw, the junction between low pressure stainless steel tube and high pressure stainless steel tube all reinforces with stainless steel retainer plate.
Apparatus of the present invention are after energy-storage system is fully charged, can work continuously 2～4 hours in the environment of without external power supply, can meet field perform task, geological prospecting, yacht and boats and ships, after earthquake disaster, relate to the needs of personal lifestyle drinking water under multiple particular surroundings such as remote tourism.Additionally, the control switch of supply-water pump, high-pressure pump and battery is respectively provided with on the control panel, beautiful and clean, easy to operate.
The present invention compared with prior art, has the advantage that
(1) design of the antipollution systems such as ternary gradient tubular membrane sea water desalination membrane is used.The separation aperture of ternary gradient tubular ultra-filtration membrane is 0.02～0.05um, has the features such as flow is big, intensity is high, self-cleaning ability is strong, can effectively remove algae in seawater, microorganism, silt and macromolecular colloid material.Utilizing sea water desalination membrane to carry out desalination, the salinity in energy efficient removal seawater, salt rejection rate 98%～99%, water outlet can reach drinking water standard.The design of this functionalization, can efficiently carry out desalinization process, is greatly enhanced the resistance tocrocking of device, extends the service life of whole system.
(2) multi-level nano-structure design method and PVDF organic hydrophilic modification technology are used, on the basis of sintering process prepares the PVDF basement membrane of high intensity binary gradient structure, carry out chemical modification respectively to inorganic precursor and PVDF material by strong sequestering part and plasma, use the preparation of thermal induced phase transition method by chemical bond firmly connect, the Al of uniform pore diameter2O3/ PVDF separating layer, final acquisition has the high-intensity inorganic/organic composite tubular membrane of ternary gradient-structure.Using the high intensity PVDF sintering tubular ultra-filtration membrane of ternary gradient-structure, its feature is to be made up of three-decker, and outermost layer (supporting layer) and intermediate layer (transition zone) are PVDF sinter layers, and innermost layer (separating layer) is Modification on Al2O3/ PVDF modified membrane, is gradient distribution inside-out by separating aperture, forms the ternary construction of tubular ultra-filtration membrane.The aperture of separating layer is 0.02～0.05um, and thickness is 0.1～0.2mm；The pore size filter of transition zone is 1～10um, and thickness is 5～10 times of separating layer thickness；The aperture of supporting layer is 10～20um, and thickness is 50～100 times of separating layer thickness.Ternary gradient tubular ultra-filtration membrane has the features such as flow is big, self-cleaning good, pollution discharge capability is strong, mechanical strength, easy cleaning.
(3) whole system system uses light-weight design.The weight using carbon fiber membrane tube dramatically reduces the weight of equipment, simply the 1/10 of traditional glass steel membrane pipe.The volume of whole device is little, can load in luggage case, be convenient for carrying, and whole system is approximately less than 10 kilograms.
(4) Rechargeability.Can external 220V power supply, and be equipped with rechargeable battery, can work continuously more than 2 hours.As required, can be configured to solar electrical energy generation or wind power generation.
(5) range is wide.The water source such as not clear to water after seawater and brackish water, earthquake disaster, surface water, mountain spring water and source can be processed into drinking water.
(6) contamination resistance is good.Using antipollution tubular membrane simultaneously to combine dynamic split system, the service life of sea water desalination membrane extends more than 7 times, by clean after using 120～140 hours increase to use 1000～1200 hours after clean.
(7) aquifer yield is big.For seawater, aquifer yield 12～14 ls/h；For bittern water, aquifer yield 20～22 ls/h；For surface water, mountain spring water etc., aquifer yield 30～40 ls/h.
(8) effluent characteristics is high.After purified, water quality can reach drinking water standard.Energy separating most salt of the present invention, can all remove the poisonous and harmful substances such as agricultural chemicals, microorganism, organic matter and suspended material.
Brief description
Fig. 1, Fig. 2 are tubular membrane outline drawing in the embodiment of the present invention；
Fig. 3 is the flux pattern of tubular membrane and hollow-fibre membrane in embodiment；
Fig. 4 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further described, but the invention is not restricted to following example.
Embodiment 1
Ternary gradient tubular membrane and the preparation of assembly thereof
With PVDF powder that granularity is 200 mesh as raw material, in tubulose stainless steel mould, with 10MPa pressure, 140 DEG C of-160 DEG C of temperature, high temperature sintering 1h.Subsequently, the PVDF powder using granularity to be 600 mesh is raw material, and with same process, inside supporting layer structure, sintering prepares transition zone.By highly purified nanometer Al2O3Microparticle aggregate is vacuum dried, with ethanol for dispersion solvent supersonic dispersion, under the conditions of 60 DEG C, with silane coupler 2-cyanoethyl triethoxysilane, through magnetic agitation, condensing reflux, centrifugation, at Al2O3Inorganic nano-particle sub-surface introduces 2-cyanoethyl triethoxysilane, then under 65 DEG C of constant temperatures, with acetic acid, i.e. obtains the carboxy-modified Al of nano-silicon2O3Particle.Use plasma emission device, irradiation power 40W, throughput 20cm are set3·s-1, process PVDF material 20s with 40cm distance so that it is introduce hydroxy, by modified PVDF and Al2O3Being sufficiently mixed, oil bath heats up 180 DEG C, and stirring, to full and uniform, be incubated 3h, make modified Al2O3Surface carboxyl groups and the condensation reaction of modified PVDF hydroxy, fully escape bubble, form functionalization Al with chemical bonding2O3/ PVDF hybrid material.Functionalization Al with 6g/L2O3/ PVDF material is raw material, with there is binary gradient structure sintering PVDF tubular type body as matrix, use and rotate knife coating, to lower and from carrying out film, blade coating speed 10m/min is set, coating temperature 90 DEG C, is coated with internal layer separating layer membrane structure, after coating terminates, body is placed in water-bath solidification at a temperature of 20 DEG C, then the ethanol water using 50% soaks 40h, dries, as tubular membrane materials for later use.
Every tubular membrane made above, internal diameter 12mm, wall thickness 9.73mm, long 1.8m.It is gradient distribution inside-out by separating aperture, form ultrafiltration ternary construction.The aperture of separating layer is 0.025um, and thickness is 0.13mm；The pore size filter of transition zone is 2.0um, and thickness is 1.2 mm of separating layer thickness；The aperture of supporting layer is 15um, and thickness is 8.4 mm of separating layer thickness.
Using above ternary gradient-structure tubular membrane material, being cut into 300 mm length, putting into overall diameter is in the ABS pipe that 60mm, thickness are 2mm, the sidewall of ABS pipe beats mouth, and ABS glue glues the outlet mouth being stained with permeate, outlet mouth is internal diameter 6mm, and thickness is the interface of 1.5mm.The two ends of ABS pipe use the fixing tubular membrane of polyurethane casting, and the ternary gradient-structure tubular membrane component of preparation is 60mm, and a length of 280mm disposes the end cap of the water inlet with interface and water outlet respectively at two ends.Under 0.2 MPa pressure, the permeation flux of seawater is 220 ls/h.
Embodiment 2
The preparation of carbon fiber pipe in desalination system
Owing to desalination system is high pressing operation, substantially use the glass-reinforced plastic material of high intensity as pressure counter-infiltration membrane tube at present, relatively heavier, carry.The present invention uses high intensity, light-weighted carbon fiber pipe as the membrane tube of sea water desalination membrane.Selecting nylon tube to do liner in the present invention, the internal diameter of nylon inner lining is 55mm, thickness 3mm, length 350mm.Then, it is wound around carbon fiber in the outside of nylon inner lining, use bi-component epoxide-resin impregnation of carbon fibers, at a temperature of 60～80 DEG C, carry out curing molding, thickness 5 mm of carbon fiber.
The a diameter of 70cm of carbon fiber seawater desalination pipe, a length of 350mm of preparation.Membrane tube weight is only 135g, alleviates the weight of membrane module greatly, and maximum burst pressure 20MPa, meets high pressure, high intensity desalinization film strength requires, sees attached Fig. 1 and 2.
Embodiment 3
Portable lightweight individual's seawater desalination system
A kind of portable lightweight individual's seawater desalination system, structure diagram is shown in Fig. 3.Native system includes ternary gradient tubular membrane pretreatment system, desalination system, power-supply system, energy-storage system and power conversion switch.Required assembly includes: supply-water pump, ternary gradient tubular ultrafiltration membrane module, carbon fiber high-pressure pump, and carbon fiber reverse osmosis membrane assembly, rechargeable battery, power control system, control valve, pressure and flow indication system, carrying case and stainless steel connect pipeline etc..
Its course of work is: seawater, after supply-water pump pressurization, enters ternary gradient tubular membrane pretreatment system, the input voltage 24V of supply-water pump, maximum pressure 0.4MPa, maximum stream flow 400 ls/h.Ternary gradient tubular membrane pretreatment system is the hyperfiltration membrane assembly of the one-in-and-two-out with rinsing, a diameter of 60mm of membrane module, a length of 280mm.The permeate of hyperfiltration membrane assembly enters subordinate's desalination system by stainless steel pipes, and the algae retaining, microorganism, larger molecular organics etc. discharge system by concentrating mouth, concentrated solution outlet after membrane module disposes a pressure-regulating valve door, the operating pressure of regulation tubular ultrafiltration membrane module, operating pressure scope 0.2～0.3MPa, the membrane flux of permeate is 200～300 ls/h.
Subsequently, tubular ultra-filtration membrane permeate enters desalination system.Desalination system is made up of high-pressure pump, carbon fiber desalinization membrane module (desalination assembly), septum valve, Pressure gauge, spinner flowmeter, pressure piping and low pressure pipeline etc..High-pressure pump uses stainless steel plunger pump head, and input voltage 24V, maximum pressure is up to 10MPa, maximum stream flow 3 liters/min.After pretreated seawater is via high-pressure pump pressurization, entering from the water inlet end of carbon fiber desalinization membrane module, the desalination water outlet of the other end from desalination assembly for the desalination water is flowed out, and through spinner flowmeter, can be used as purifying water output, is available for drinking.High-pressure pump is connected with stainless steel tube with desalination membrane assembly, salinity is retained down formation strong brine by sea water desalination membrane, adjust operating pressure by the septum valve being connected with strong brine discharge pipe, it is ensured that the normal work of carbon fiber desalinization membrane module and the stable product water of fresh water.Strong brine, by after septum valve, flows through wherein one end of three-way pipe through stainless steel pipeline, the waste water collected with the concentration tube of pretreatment system together, by discharge manifold discharger.
Native system carries out desalination under 6.0MPa downforce, and desalination water is collected by flowmeter.For the seawater of salt concentration 3.5%, aquifer yield is 12 ls/h, salt rejection rate 99%.
Concrete operation step is as follows:
(1) it is immersed in the filter tip of water inlet end in pending water, check that pipeline ensures to be completely embedded everywhere.
(2) attaching plug is accessed 220V AC power.If in the wild or when there is no external power supply, power change-over switch can be passed through, use storage electricity system to be powered, or according to residing geographical position and environmental condition, use solar energy or wind energy to be charged storage electricity system, and by storage electricity system, this device is powered.After circuit ON, open supply-water pump switch and high-pressure pump switch, start extracting seawater.
(3) come in seawater by supply-water pump improve pressure, through pretreatment membranous system (tubular ultrafiltration membrane module) preliminary purification, through water flow speed stability after, regulation pretreatment membrane module after control valve, make the inlet pressure of current maintain near 0.2MPa.
(4) water after preliminary purification, enter desalination membrane assembly after high-pressure pump pressurization, until the port of export of strong brine begin with strong brine flow out when, by regulating the valve of desalination membrane assembly brine outlet end, make at the port of export of strong brine manometric stable reading at 6.0MPa.
(5) after desalination membrane component operation is stable, the stability of flow of desalination water water side gets off, water now be process after desalination water, can be standby as desalination water output.
(6) after completing seawater desalination, fully open the valve of the dense water outlet end of reverse osmosis membrane assembly, fully open the valve pre-processing dense water water side, carry out dynamic cleaning membrane module 1～2 minute.Then, high-pressure pump, supply-water pump and general supply are sequentially successively closed.
Implementation result
Taking a certain amount of seawater, after portable lightweight individual's seawater desalination system is processed 1 hour, being analyzed the desalination water obtaining, testing result is shown in Table 1.
Table 1 . Desalinization water testing result
As can be seen from Table 1, after portable lightweight individual's seawater desalination system is processed, the total plate count purifying water is 7, limits the 100 of index far below country；Turbidity is less than 0.5, reaches the requirement less than 1 for the country；Purification water, without foreign odor, free from extraneous odour, is visible by naked eyes thing.Total dissolved solid 757 mg/L, total hardness content 62.5 mg/L all reach the limit index of country.Water purifier is to arsenic, lead, mercury, and Cr VI is high, arsenic, lead, mercury, and the residual quantity of the heavy metal ion such as Cr VI is respectively lower than 0.001 mg/L, 0.0025 mg/L, 0.0004 mg/L, 0.004 mg/L, far below the limit index of country's drinking water directive.Water quality after purifying can fully meet the sanitary standard of Drinking Water, and effluent quality is better than national standard.

Claims (10)

1. portable lightweight individual's seawater desalination system, it is characterised in that it includes ternary gradient tubular membrane pretreatment system, desalination system, power-supply system, energy-storage system and power conversion switch；Required assembly includes: supply-water pump, ternary gradient tubular ultrafiltration membrane module, carbon fiber high-pressure pump, carbon fiber reverse osmosis membrane assembly, rechargeable battery, power control system, control valve, pressure and flow indication system, carrying case and stainless steel connect pipeline.
2. seawater desalination system as claimed in claim 1, it is characterized in that described ternary gradient tubular membrane pretreatment system includes: arrival end filtering head, supply-water pump, three layers of gradient tubular membrane component, Pressure gauge, pressure-regulating valve door, stainless steel pipes of intaking, permeable stainless steel pipes, waste water stainless steel pipes.
3. seawater desalination system as claimed in claim 2, it is characterised in that described ingress filtering head, containing stainless steel filter screen；Being immersed in filtering head in pending seawater, when system work, when in seawater intake line, filter tip stops bigger material to enter in rubber tube with current, prevents pipeline blockage；Seawater, after supply-water pump pressurization, sends into pretreatment membrane module.
4. seawater desalination system as claimed in claim 1, it is characterized in that described ternary gradient tubular membrane pretreatment system uses ternary gradient tubular ultrafiltration membrane module, it is a kind of hyperfiltration membrane assembly with gradient aperture distributed architecture, and combine Dynamic Separation process, contamination resistance is good, being not easily blocked, flux is 3-4 times of traditional hollow.
5. seawater desalination system as claimed in claim 1, it is characterized in that the high intensity PVDF sintering tubular ultra-filtration membrane that described ternary gradient tubular membrane is ternary gradient-structure, it is made up of three-decker, outermost layer (supporting layer) and intermediate layer (transition zone) are PVDF sinter layers, and innermost layer (separating layer) is Modification on Al2O3/ PVDF modified membrane；Utilize the PVDF particle that granularity is different to prepare supporting layer and the transition zone of different pore size by sintering process, form modified Nano Al by thermal induced phase transition method2O3/ PVDF separating layer, is gradient distribution inside-out by separating aperture, forms the construction of the ternary structural of milipore filter；The aperture of separating layer is 0.02～0.05um, and thickness is 0.1～0.2mm；The pore size filter of transition zone is 1～10um, and thickness is 5～10 times of separating layer thickness；The aperture of supporting layer is 10～20um, and thickness is 50～100 times of separating layer thickness.
6. seawater desalination system as claimed in claim 1, it is characterised in that described dynamic split system, the ultrafiltration membrane pipe of the one-in-and-two-out with rinsing for the employing, a diameter of 4～6cm of membrane tube, a length of 25～30cm；Seawater enters ternary gradient tubular membrane component through supply-water pump, permeate enters subordinate's desalination system by permeable mouth, the algae that retains, microorganism, larger molecular organics discharge system by concentrating mouth, concentrated solution outlet after membrane module disposes a pressure-regulating valve door, the operating pressure of regulation ternary gradient tubular membrane component, operating pressure scope 0.2～0.3MPa, the membrane flux of permeate is 200～300 ls/h；The input voltage 24V of supply-water pump, maximum pressure 0.4MPa, maximum stream flow 400 ls/h.
7. seawater desalination system as claimed in claim 1, it is characterised in that described desalination system is by high-pressure pump, carbon fiber desalinization membrane module, septum valve, Pressure gauge, spinner flowmeter, pressure piping and low pressure pipeline composition；After pretreated seawater is via high-pressure pump pressurization, from the inlet end input of carbon fiber desalinization membrane module, by high voltage adjusting valve, carry out desalination under 5～7MPa downforce, desalination water is collected by flowmeter, and concentrate salt solution and pass through concentrate pipeline, accumulate discharge of wastewater house steward with the concentration tube of pretreatment system and discharge.
8. seawater desalination system as claimed in claim 1, it is characterised in that in described desalination system, membrane tube uses high intensity, light-weighted carbon fiber pipe；A diameter of 5～the 7cm of carbon fiber seawater desalination pipe, a length of 35～40cm, membrane tube weight is only 120～140g, maximum burst pressure 20MPa；Carbon fiber pipe uses nylon inner lining, nylon inner lining thickness 3～5mm, then, is wound around carbon fiber in the outside of nylon inner lining, uses bi-component epoxide-resin impregnation of carbon fibers, carry out curing molding, thickness 3～5 mm of carbon fiber at a temperature of 60～80 DEG C；High-pressure pump uses stainless steel plunger pump head, input voltage 24V, maximum pressure 10MPa, flow 1～3 liter/min.
9. seawater desalination system as claimed in claim 1, it is characterised in that described power-supply system uses direct-current switch power supply, input voltage: 90～132 VAC/180～264VAC 47～63 Hz(V)；Input current: 6.5A/115V 4A/230V(A)；Output voltage: 24V；Power output: 350W.
10. seawater desalination system as claimed in claim 1, it is characterized in that described energy-storage system uses portable lithium battery group, battery types uses LiFePO4 battery core or LiMn2O4 battery core or ternary material battery core, rated voltage voltage 24V, rated capacity 8Ah, uses more than 2 groups portable lithium battery groups.
CN201510162377.1A 2015-04-08 2015-04-08 A kind of portable lightweight individual's seawater desalination system Pending CN106145411A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105344254A (en) * 2015-11-10 2016-02-24 华南理工大学 High-intensity ternary gradient structure PVDF tubular ultrafilter membrane and preparation method
CN105366772A (en) * 2015-11-10 2016-03-02 华南理工大学 Portable lightweight personal water purifier
CN116793963A (en) * 2023-03-28 2023-09-22 生态环境部南京环境科学研究所 Device and method for reinforcing MPs and ARGs combined pollution supervision in wastewater treatment system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105344254A (en) * 2015-11-10 2016-02-24 华南理工大学 High-intensity ternary gradient structure PVDF tubular ultrafilter membrane and preparation method
CN105366772A (en) * 2015-11-10 2016-03-02 华南理工大学 Portable lightweight personal water purifier
CN105366772B (en) * 2015-11-10 2017-08-25 华南理工大学 A kind of personal purifier of portable lightweight
CN105344254B (en) * 2015-11-10 2017-12-01 华南理工大学 A kind of high-strength ternary gradient-structure PVDF tubular ultra-filtration membranes and preparation method
CN116793963A (en) * 2023-03-28 2023-09-22 生态环境部南京环境科学研究所 Device and method for reinforcing MPs and ARGs combined pollution supervision in wastewater treatment system

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