CN104667749A - Energy recoverer and method for increasing water yield of reverse osmosis sea water desalination device - Google Patents

Energy recoverer and method for increasing water yield of reverse osmosis sea water desalination device Download PDF

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CN104667749A
CN104667749A CN201510091697.2A CN201510091697A CN104667749A CN 104667749 A CN104667749 A CN 104667749A CN 201510091697 A CN201510091697 A CN 201510091697A CN 104667749 A CN104667749 A CN 104667749A
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reverse osmosis
seawater
generator
desalting
seawater desalting
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CN104667749B (en
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张英华
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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

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Abstract

The invention discloses an energy recoverer and a method for increasing the water yield of a reverse osmosis sea water desalination device. According to the method, a pretreatment sea water pump pumps pretreated sea water in a sea water well into a sea water tank; low-pressure reverse osmosis desalination and high-pressure reverse osmosis desalination are performed step by step; a mechanical vibrator and compressed air are used for stirring sea water in a reverse osmosis membrane core, and when the reverse osmosis membrane core is blocked to certain extent, energy generated through backwash of the reverse osmosis membrane core is recovered with a reverse osmosis sea water desalination manner. For the reverse osmosis sea water desalination device adopting concentration polarization instead of energy recovery to discharge concentrated sea water timely, the concentrated sea water can be discharged timely according to the concentration polarization principle in the processes of low-pressure reverse osmosis desalination, high-pressure reverse osmosis desalination and backwash. After multiple times of backwash of the reverse osmosis membrane core, back blowing through is performed once on the reverse osmosis membrane core by a roots blower. The energy recoverer comprises a container, pistons, water inlet solenoid valves and water outlet solenoid valves.

Description

The method of recuperator and raising reverse osmosis desalination device water rate
Technical field:
The present invention relates to a kind of method of recuperator and raising reverse osmosis desalination device water rate.
Background technology:
At present, the most of high-pressure undersea water pumps in the reverse osmosis desalination device of China, reverse osmosis membrane, the good recuperator of Tao Shi reverse osmosis membrane core all need import, so reverse osmosis seawater desalination equipment cost is high.The technique of the reverse osmosis seawater desalting of outside falls behind in addition, and producing one ton of fresh water just needs discharge two tons of concentrated seawaters, namely could produce one ton of fresh water, go out fresh water rate 33% with reverse osmosis desalination device with three tons of seawater.The technological process of China's reverse osmosis seawater desalting is as follows: sandy beach is by the sea dug a bite seawater well, seawater flows in seawater well through husky filter, then in seawater well, throw in algae removal medicine eliminate marine alga, with sea water pump, seawater is extracted in seawater pond, the heating of seawater in seawater pond to 20 degrees Celsius after the filtration of ultrafiltration pottery.Low pressure seawater pump is extracted into the seawater in seawater pond after treatment in the reverse osmosis membrane core of counter-infiltration generator, carries out low pressure reverse osmosis desalinization, and fresh water flows into fresh-water pool.When low pressure reverse osmosis desalinization resistance is too large, the low pressure seawater of closing this reverse osmosis seawater desalting generator goes out water solenoid valve, stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.The seawater started in high-pressure undersea pump handle seawater pond is after treatment extracted out, open and stop the high pressure sea water of that reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization to go out water solenoid valve, high pressure sea water enters in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting, fresh water flows into fresh-water pool.When high pressure reverse osmosis desalinization resistance is too large, the high pressure sea water of closing this reverse osmosis seawater desalting generator goes out water solenoid valve and fresh water outlet magnetic valve.Start fresh water pump, the seawater entering water electromagnetic valve of the fresh water entering water electromagnetic valve opening this reverse osmosis seawater desalting generator and the recuperator opening this reverse osmosis seawater desalting generator, carries out backwash to the reverse osmosis membrane core of this reverse osmosis seawater desalting generator.The seawater entering water electromagnetic valve of the fresh water entering water electromagnetic valve of then closing this reverse osmosis seawater desalting generator and the recuperator opening this reverse osmosis seawater desalting generator.Energy regenerating in existing reverse osmosis seawater desalting, carrying out energy regenerating to the hydraulic pressure that the overbottom pressure in reverse osmosis membrane core carries out energy regenerating and fresh water outlet before referring to concentrated seawater discharge, is wrong in fact.There is an expert's statement into question specializing in reverse osmosis seawater desalting in Guangzhou: " seawater before concentrated seawater discharge in reverse osmosis membrane core is liquid; do not have the overbottom pressure of the volumetric expansion of gas; how can have fault offset which? there is no fault offset; the energy regenerating which comes? carry out energy regenerating to the hydraulic pressure of fresh water outlet and can lower the pressure of fresh water through reverse osmosis membrane, fresh water deducts the pressure of fresh water outlet through the pressure seawater pressure equaled in reverse osmosis membrane core of reverse osmosis membrane.Start Roots blower, electromagnetic air valve and the concentrated seawater of opening this reverse osmosis seawater desalting generator go out water solenoid valve, the high-pressure blast of Roots blower blowout blows logical reverse osmosis membrane core from the electromagnetic air valve of this reverse osmosis seawater desalting generator opened further from the fresh water district of this reverse osmosis seawater desalting generator, and concentrated seawater goes out water solenoid valve through the concentrated seawater opened and is discharged in the sea large.Electromagnetic air valve and the concentrated seawater of closing this reverse osmosis seawater desalting generator go out water solenoid valve, and then this reverse osmosis seawater desalting generator carries out the reverse osmosis seawater desalting of a new round.Have in prior art and utilize compressed air to stir the seawater in reverse osmosis membrane core and utilize the seawater in Vibratory Mixing reverse osmosis membrane core.Also have in prior art and utilize concentration polarization technology that the concentrated seawater in reverse osmosis membrane core is focused on the lower end of reverse osmosis membrane core, then concentrated seawater is discharged.
External advanced country produces two tons and lightly just discharges one ton of concentrated seawater, namely can produce two tons of fresh water, go out fresh water rate 67% with reverse osmosis desalination device with three tons of seawater.High and the reverse osmosis seawater desalting of reverse osmosis seawater desalination equipment cost produce seawater amount that each ton of fresh water consumes and electricity all very high, both the cost of reverse osmosis seawater desalting production fresh water was very high, seriously govern the commercialization of China's reverse osmosis seawater desalting.
Summary of the invention:
The present invention can change the low defect of existing reverse osmosis seawater desalting fresh water outlet rate.
The structure of reverse osmosis desalination device is as follows: it has several reverse osmosis seawater desalting generator, reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core and outside stainless steel casing, region between reverse osmosis membrane core and stainless steel casing belongs to fresh water district, and reverse osmosis membrane core inner belongs to sea-water area.Upwards, one end that reverse osmosis membrane core is equipped with seawater pipe is downward in one end that reverse osmosis membrane core is closed.Pre-treating seawater pump is extracted out through husky filter, except the seawater in the seawater well of algae, delivers in seawater pond after the filtration of screen pack, then the heating of seawater in seawater pond to 20 degrees Celsius.The seawater in seawater pond after treatment extracted out by low pressure seawater pump, through the low pressure seawater water outlet electromagnetism of respective reverse osmosis seawater desalting device opened with enter in the reverse osmosis membrane core of respective reverse osmosis seawater desalting device through the ultrafiltration pottery be equipped with in seawater pipe, it is light to carry out low pressure reverse osmosis seawater.Seawater in high-pressure undersea pump handle seawater pond is after treatment extracted out, high pressure sea water through the respective reverse osmosis seawater desalting device opened goes out water solenoid valve and enters in the reverse osmosis membrane core of respective reverse osmosis seawater desalting device through the ultrafiltration pottery be equipped with in seawater pipe, carries out high pressure reverse osmosis seawater desalting.Mechanical vibrator shakes reverse osmosis seawater desalting generator.The compressed air that air compressor extrudes enters air accumulator through check valve, from the electromagnetic gas valve of respective reverse osmosis seawater desalting generator of air accumulator compressed air out through opening, then enter in the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator through the seawater pipe of respective reverse osmosis seawater desalting generator.The probe of concentration of seawater sensor, seawater velocity sensor, Sea-water pressure sensor and ultrafiltration pottery is housed in the seawater pipe of each reverse osmosis seawater desalting generator.Concentrated seawater in the reverse osmosis membrane core of each reverse osmosis seawater desalting device can go out the seawater tube drainage of water solenoid valve from respective reverse osmosis seawater desalting generator in the sea large by the concentrated seawater of the respective reverse osmosis seawater desalting generator opened.Fresh water in the fresh water district of each reverse osmosis seawater desalting generator from the fresh water pipe of respective reverse osmosis seawater desalting generator out after, the fresh water outlet magnetic valve through the respective reverse osmosis seawater desalting generator opened flows into fresh-water pool.Fresh water pump extracts fresh water from fresh-water pool, through the fresh water entering water electromagnetic valve of the respective reverse osmosis seawater desalting generator opening, the fresh water district of respective reverse osmosis seawater desalting generator is entered from the fresh water pipe of respective reverse osmosis seawater desalting generator, then through the reverse osmosis membrane core of respective reverse osmosis seawater desalting device, backwash is carried out.Utilize the energy that recuperator produces backwash, carry out energy regenerating reverse osmosis seawater desalting, realize energy regenerating.Recuperator goes out water solenoid valve by container, the energy regenerating seawater entering water electromagnetic valve supporting with reverse osmosis seawater desalting generator and energy regenerating seawater and forms, seawater in the reverse osmosis membrane core of reverse osmosis seawater desalting generator can enter in the container of recuperator by the energy regenerating seawater entering water electromagnetic valve opened, go out water solenoid valve by the energy regenerating seawater opened of other reverse osmosis seawater desalting generator again to enter in other reverse osmosis membrane core, carry out energy regenerating reverse osmosis seawater desalting.Or the container of recuperator is welded by pre-small post-large two pipes, container content is made up of pre-small post-large two pistons connected together by piston rod, two pistons respectively fill a bowl-type hydrostatic seal circle, rear container end is equipped with the energy regenerating seawater entering water electromagnetic valve supporting with reverse osmosis seawater desalting generator, rear container end is also equipped with an energy regenerating seawater drain solenoid valve, container front end is equipped with the energy regenerating seawater supporting with reverse osmosis seawater desalting generator and is gone out water solenoid valve, seawater in the reverse osmosis membrane core of reverse osmosis seawater desalting generator can enter the rear container end of recuperator by the energy regenerating seawater entering water electromagnetic valve opened, the large piston promoted in container moves forward, thus drive valve piston to move forward, water solenoid valve is gone out by the energy regenerating seawater opened of other reverse osmosis seawater desalting generator, the seawater of container leading portion is pushed in other reverse osmosis membrane core, carry out energy regenerating reverse osmosis seawater desalting.Fresh water pressure force snesor and fresh water flow sensor are housed in each fresh water pipe.The air velocity transducer of wind through respective reverse osmosis seawater desalting device and the electromagnetic air valve of the respective reverse osmosis seawater desalting generator opened of Roots blower blowout, from the fresh water pipe of respective reverse osmosis seawater desalting device enter emptying after the fresh water district of respective reverse osmosis seawater desalting generator, blow logical to the reverse osmosis membrane core of respective reverse osmosis seawater desalting device.The working procedure of reverse osmosis desalination device is as follows: a) a bite seawater well is dug at sandy beach by the sea, and seawater flows in seawater well through husky filter, in seawater well, then throws in algae removal medicine eliminate marine alga.Pre-treating seawater pump passing through, filter, except the seawater extraction in the seawater well of algae, the filtration through screen pack is delivered in seawater pond by sand, then the heating of seawater in seawater pond to 20 degrees Celsius.B) seawater in seawater pond after treatment extracted out by low pressure seawater pump, goes out water solenoid valve, enter in respective reverse osmosis membrane core through the ultrafiltration pottery in the seawater pipe of respective reverse osmosis seawater desalting generator through the several low pressure seawater opened.Fresh water reaches the fresh water district of respective reverse osmosis seawater desalting generator through the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization, the fresh water in the fresh water district of then respective reverse osmosis seawater desalting generator flows into fresh-water pool by the fresh water outlet magnetic valve of the respective reverse osmosis seawater desalting generator opened.There are polarization phenomena in the concentration of seawater of the reverse osmosis membrane in-core of the reverse osmosis seawater desalting generator c) in running, the concentration of seawater near reverse osmosis membrane is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core is not high.Mechanical vibrator, the vibrations of reverse osmosis seawater desalting generator, stirs the seawater inside reverse osmosis membrane core.The compressed air that air compressor extrudes enters air accumulator through check valve, from the electromagnetic gas valve of respective reverse osmosis seawater desalting generator of air accumulator compressed air out through opening, the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator is entered from the seawater pipe of respective reverse osmosis seawater desalting generator, seawater inside the reverse osmosis membrane core of stirring reverse osmosis seawater desalting generator, makes the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core.Meanwhile, according to the information that the Sea-water pressure sensor of respective reverse osmosis seawater desalting generator provides, by the time length regulating the electromagnetic gas valve of respective reverse osmosis seawater desalting generator to open.D) when the flow speed value that the seawater velocity sensor be equipped with in the seawater pipe of certain reverse osmosis seawater desalting generator is measured is greater than low-pressure settings lower than the seawater pressure that setting value and Sea-water pressure sensor are measured, illustrate the reverse osmosis membrane core of this reverse osmosis seawater desalting generator have some blocking and the pressure of seawater is too little, through the reverse osmosis membrane core of this reverse osmosis seawater desalting generator fresh water very little.The low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve, stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.The seawater started in high-pressure undersea pump handle seawater pond is after treatment extracted out, the high pressure sea water opening that reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization that just stopped goes out water solenoid valve, and high pressure sea water enters in the reverse osmosis membrane core of that reverse osmosis seawater desalting generator through the ultrafiltration pottery in the seawater pipe of that reverse osmosis seawater desalting generator.Fresh water reaches the fresh water district of that reverse osmosis seawater desalting generator through the reverse osmosis membrane core of that reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting, then fresh water flows into fresh-water pool by the fresh water outlet magnetic valve of that reverse osmosis seawater desalting generator opened.E) when the flow speed value that the seawater velocity sensor carrying out being equipped with in the seawater pipe of that reverse osmosis seawater desalting generator of high pressure reverse osmosis seawater desalting when that is measured is greater than high pressure set point lower than the seawater pressure that setting value and Sea-water pressure sensor are measured, the reverse osmosis membrane core Severe blockage of that reverse osmosis seawater desalting generator is described, through the reverse osmosis membrane core of that reverse osmosis seawater desalting generator fresh water very little.The high pressure sea water that conputer controlled instrument cuts out that reverse osmosis seawater desalting generator goes out water solenoid valve and fresh water outlet magnetic valve and electromagnetic gas valve, start fresh water pump, the fresh water entering water electromagnetic valve opening that reverse osmosis seawater desalting generator and the energy regenerating seawater entering water electromagnetic valve opening that reverse osmosis seawater desalting generator; Close one of them low pressure seawater being in the reverse osmosis seawater desalting generator of low pressure reverse osmosis simultaneously and go out water solenoid valve and the energy regenerating seawater of opening this reverse osmosis seawater desalting generator goes out water solenoid valve, fresh water through open fresh water entering water electromagnetic valve reverse osmosis seawater desalting generator reverse osmosis membrane core, carry out backwash.Inside the reverse osmosis seawater desalting generator carrying out backwash, fresh water is through the seawater in the reverse osmosis membrane core compressing reverse osmosis membrane core of this reverse osmosis seawater desalting generator, through the energy regenerating seawater entering water electromagnetic valve of this reverse osmosis seawater desalting generator, enter in the container of recuperator, the energy regenerating seawater opened that stopped the reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization by other again goes out water solenoid valve, enter in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator, carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core of this reverse osmosis seawater desalting generator.Or inside the reverse osmosis seawater desalting generator carrying out backwash, the seawater of oppressing through reverse osmosis membrane core in reverse osmosis membrane core of this reverse osmosis seawater desalting generator of fresh water, through the energy regenerating seawater entering water electromagnetic valve opened of this reverse osmosis seawater desalting generator, enter the rear container end of recuperator, the large piston promoted in container moves forward, thus drives valve piston to move forward; The energy regenerating seawater opened that stopped the reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization by other goes out water solenoid valve, the seawater of container leading portion is pushed and opens energy regenerating seawater and go out in the reverse osmosis membrane core of the reverse osmosis seawater desalting generator of water solenoid valve 5, carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core of this reverse osmosis seawater desalting generator.F) when the fresh water flow sensor in the fresh water pipe of reverse osmosis seawater desalting generator carrying out backwash measure that flow velocity exceedes setting value, fresh water pressure force snesor measure fresh water pressure exceed energy regenerating pressure settings lower than the seawater pressure that the Sea-water pressure sensor in setting value and seawater pipe is measured time, illustrate that the reverse osmosis membrane core Penetration ration of the reverse osmosis seawater desalting generator carrying out backwash reaches standard.Conputer controlled instrument cuts out through the fresh water entering water electromagnetic valve of the reverse osmosis seawater desalting generator of backwash and energy regenerating seawater entering water electromagnetic valve, and the low pressure seawater opening this reverse osmosis seawater desalting generator goes out water solenoid valve, re-starts low pressure reverse osmosis desalinization.Then the low pressure seawater opening the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization goes out water solenoid valve and closes the energy regenerating seawater carrying out the reverse osmosis seawater desalting generator of energy regenerating desalinization to go out water solenoid valve, recovers the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.Or the low pressure seawater opening the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization goes out water solenoid valve, recover the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, open energy regenerating seawater drain solenoid valve, having the seawater of certain pressure intensity to promote valve piston before valve piston in the container of recuperator drives large piston to move backward, and the seawater on rear side of the large piston in the container of recuperator is discharged in seawater pond through the energy regenerating seawater drain solenoid valve opened.Then close energy regenerating seawater drain solenoid valve and go out water solenoid valve with the energy regenerating seawater of the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization.G) through the reverse osmosis seawater desalting generator of backwash, the process of low pressure reverse osmosis desalinization, high pressure reverse osmosis seawater desalting, again backwash is again experienced.After circulation for several times, when the concentration value that concentration sensor in the seawater pipe of the reverse osmosis seawater desalting generator in the process of backwash is measured reaches setting value, conputer controlled instrument cuts out this energy regenerating seawater entering water electromagnetic valve completing the reverse osmosis seawater desalting generator of backwash and opens this concentrated seawater completing the reverse osmosis seawater desalting generator of backwash and goes out water solenoid valve.Fresh water completes the reverse osmosis membrane core compressing concentrated seawater of the reverse osmosis seawater desalting generator of backwash through this, concentrated seawater carries out backwash through the ultrafiltration pottery in the seawater pipe of this reverse osmosis seawater desalting generator to ultrafiltration pottery, then the concentrated seawater of this reverse osmosis seawater desalting generator through opening goes out water solenoid valve and is discharged into sea.The flow velocity that fresh water flow sensor in the fresh water pipe of h) by the time this reverse osmosis seawater desalting generator measures fresh water exceedes fresh water pressure that the fresh water pressure force snesor in the fresh water pipe of another setting value, this reverse osmosis seawater desalting generator measures and is less than pressure that the Sea-water pressure sensor in the seawater pipe of another setting value and this reverse osmosis seawater desalting generator measures when being less than setting value, illustrates that the ultrafiltration pottery Penetration ration of this reverse osmosis seawater desalting generator has reached low setting.Conputer controlled instrument starts Roots blower, opens and goes out water solenoid valve through the electromagnetic air valve of the reverse osmosis seawater desalting generator of backwash and concentrated seawater.The high-pressure blast of Roots blower blowout is through through the air velocity transducer of the reverse osmosis seawater desalting generator of backwash and electromagnetic air valve, reverse osmosis membrane core is passed from the fresh water district of the reverse osmosis seawater desalting generator through backwash, remaining concentrated seawater in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator is exerted pressure, remaining concentrated seawater is through the ultrafiltration pottery in this reverse osmosis seawater desalting generator seawater pipe, backwash is carried out to ultrafiltration pottery, then the concentrated seawater passing through this reverse osmosis seawater desalting generator opened goes out water solenoid valve and is discharged in the sea large.After racking up the concentrated seawater in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that the reverse osmosis membrane core of this reverse osmosis seawater desalting generator and ultrafiltration pottery Penetration ration have reached high setting.Conputer controlled instrument cuts out the electromagnetic air valve of this reverse osmosis seawater desalting generator and concentrated seawater goes out water solenoid valve, and then this reverse osmosis seawater desalting generator just can carry out the reverse osmosis seawater desalting of a new round.I) after reverse osmosis desalination device normally runs, all the time have that a reverse osmosis seawater desalting generator is in backwash state, reverse osmosis seawater desalting generator is in anti-energy recovery state and a reverse osmosis seawater desalting generator is in and blows logical discharge concentrated seawater state, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so just do not need repeatedly to start and close down fresh water pump, Roots blower, air compressor, low pressure seawater pump and high-pressure undersea water pump.
Why adopt reverse osmosis seawater desalting mode and energy regenerating is carried out to the energy that backwash produces, reason has three: the first, the reverse osmosis membrane core Severe blockage of reverse osmosis seawater desalting device, when carrying out backwash, concentration of seawater inside the reverse osmosis membrane core of reverse osmosis seawater desalting device is not high, if seawater not high for concentration inside the reverse osmosis membrane core of reverse osmosis seawater desalting device is discharged in the sea large, all too is wasted, because these seawater are through pretreated seawater.Second, exert pressure from the reverse osmosis membrane core of fresh water district to reverse osmosis seawater desalting device of reverse osmosis seawater desalting device in backwash process, exert pressure from the outside of the reverse osmosis membrane core of reverse osmosis seawater desalting device to the inside, and inside the reverse osmosis membrane core of reverse osmosis seawater desalting device, there is no supporter, if do not have seawater pressure to support inside the reverse osmosis membrane core of reverse osmosis seawater desalting device, be easy to press the reverse osmosis membrane core of reverse osmosis seawater desalting device of collapsing.3rd, if in backwash process reverse osmosis seawater desalting device reverse osmosis membrane core inside do not have seawater pressure to support, if after in backwash process, the reverse osmosis membrane core local of reverse osmosis seawater desalting device is rinsed and leads to, will be collapsed by pressure in the local being punctured the reverse osmosis membrane core of reverse osmosis seawater desalting device just as balloon, if in backwash process reverse osmosis seawater desalting device reverse osmosis membrane core inside have seawater pressure to support, after in backwash process, the reverse osmosis membrane core local of reverse osmosis seawater desalting device is rinsed and leads to, the reverse osmosis membrane core of the reverse osmosis seawater desalting device at other positions then also can be rinsed logical.
The structure of reverse osmosis desalination device is as follows: it has multiple reverse osmosis seawater desalting generator, and reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core and outside stainless steel casing.Region between reverse osmosis membrane core and stainless steel casing belongs to fresh water district, and reverse osmosis membrane core inner belongs to sea-water area.Reverse osmosis seawater desalting generator is vertically installed, and seawater pipe is contained in reverse osmosis membrane core upper end, and concentrated seawater outlet pipe is contained in reverse osmosis membrane core lower end.Pre-treating seawater pump is extracted out through husky filter, except the seawater in the seawater well of algae, delivers in seawater pond after filter screen filtration, then the heating of seawater in seawater pond to 20 degrees Celsius.The seawater in seawater pond after treatment extracted out by low pressure seawater pump, low pressure seawater through the respective reverse osmosis seawater desalting generator opened goes out water solenoid valve, enter the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator from the seawater pipe of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization.Seawater in high-pressure undersea pump handle seawater pond is after treatment extracted out, high pressure sea water through the respective reverse osmosis seawater desalting generator opened goes out water solenoid valve, enter the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator from the seawater pipe of respective reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting.Mechanical vibrator shakes reverse osmosis seawater desalting generator.The compressed air that air compressor extrudes enters air accumulator through check valve, enters the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator from air accumulator compressed air out through the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator opened from the concentrated seawater outlet pipe of respective reverse osmosis seawater desalting generator.The probe of seawater velocity sensor, Sea-water pressure sensor and concentration of seawater sensor is housed in the seawater pipe of each reverse osmosis seawater desalting generator.The concentrated seawater water outlet electric control valve that concentrated seawater in the reverse osmosis membrane core of reverse osmosis seawater desalting generator can go out water solenoid valve or respective reverse osmosis seawater desalting generator by the concentrated seawater of the respective reverse osmosis seawater desalting generator opened is discharged in the sea large from the concentrated seawater outlet pipe of respective reverse osmosis seawater desalting generator.The fresh water in the fresh water district of reverse osmosis seawater desalting generator from the fresh water pipe of respective reverse osmosis seawater desalting generator out after, the fresh water outlet magnetic valve through the respective reverse osmosis seawater desalting generator opened flows into fresh-water pool.Fresh water pump extracts fresh water from fresh-water pool, through the fresh water entering water electromagnetic valve of the respective reverse osmosis seawater desalting generator opening, enter the fresh water district of respective reverse osmosis seawater desalting generator from the fresh water pipe of respective reverse osmosis seawater desalting generator, then pass the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator, carry out backwash.Fresh water pressure force snesor and fresh water flow sensor are housed in the fresh water pipe of each reverse osmosis seawater desalting generator.The wind of Roots blower blowout is through the electromagnetic air valve of air velocity transducer with the respective reverse osmosis seawater desalting generator opened, from the fresh water pipe of respective reverse osmosis seawater desalting generator enter emptying after the fresh water district of respective reverse osmosis seawater desalting generator, blow logical to the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator.The working procedure of reverse osmosis desalination device is as follows: a) a bite seawater well is dug at sandy beach by the sea, and seawater flows in seawater well through husky filter, in seawater well, then throws in algae removal medicine eliminate marine alga.Pre-treating seawater pump passing through, filter, except the seawater extraction in the seawater well of algae, the filtration through screen pack is extracted in seawater pond by sand, then the heating of seawater in seawater pond to 20 degrees Celsius.B) seawater in seawater pond after treatment extracted out by low pressure seawater pump, low pressure seawater through the several reverse osmosis seawater desalting generators opened goes out water solenoid valve, enter in the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator through the ultrafiltration pottery in the seawater pipe of respective reverse osmosis seawater desalting generator, fresh water is through the fresh water district of the reverse osmosis membrane core arrival reverse osmosis seawater desalting generator of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization, then fresh water flows into fresh-water pool by the fresh water outlet magnetic valve of the respective reverse osmosis seawater desalting generator opened.C) concentration of seawater of reverse osmosis seawater desalting generator near reverse osmosis membrane in running is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core is not high.Mechanical vibrator is the seawater inside the vibrations of reverse osmosis seawater desalting generator, stirring reverse osmosis membrane core.The compressed air that air compressor extrudes enters air accumulator through check valve, enter the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator from the electromagnetic gas valve of air accumulator compressed air out through the respective reverse osmosis seawater desalting generator opened from the concentrated seawater outlet pipe of respective reverse osmosis seawater desalting generator, stir the seawater of the inside, make the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core.Ratio due to concentrated seawater is great and sink to the lower end of reverse osmosis membrane core, and polarization phenomena appear in the concentration of seawater of reverse osmosis membrane in-core.Simultaneously, according to the information that the Sea-water pressure sensor inside the seawater pipe of respective reverse osmosis seawater desalting generator provides, by the time length regulating the electromagnetic gas valve of respective reverse osmosis seawater desalting generator to open, the seawater pressure inside the reverse osmosis membrane core regulating this reverse osmosis seawater desalting generator.The data that conputer controlled instrument spreads out of according to the concentration of seawater sensor of respective reverse osmosis seawater desalting generator, regulate the size of the concentrated seawater water outlet electric control valve of respective reverse osmosis seawater desalting generator, concentrated seawater through the concentrated seawater water outlet electric control valve of respective reverse osmosis seawater desalting generator from the concentrated seawater outlet pipe of respective reverse osmosis seawater desalting generator discharged to sea.D) when the flow speed value that the seawater velocity sensor be equipped with in the seawater pipe of certain reverse osmosis seawater desalting generator is measured measures pressure values higher than low setting value lower than setting value and Sea-water pressure sensor, illustrate the reverse osmosis membrane core of this reverse osmosis seawater desalting generator have some blockings, cause seawater pressure too large, and through the reverse osmosis membrane core of this reverse osmosis seawater desalting generator fresh water very little.The low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve, stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.The seawater started in high-pressure undersea pump handle seawater pond is after treatment extracted out, the high pressure sea water opening the reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization that just stopped goes out water solenoid valve, and high pressure sea water enters in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator through in the seawater pipe of this reverse osmosis seawater desalting generator.Fresh water through the reverse osmosis membrane core of this reverse osmosis seawater desalting generator reach this reverse osmosis seawater desalting generator fresh water district, carry out high pressure reverse osmosis seawater desalting, then fresh water flows into fresh-water pool by the fresh water outlet magnetic valve of this reverse osmosis seawater desalting generator opened.E) when the seawater pressure that the flow speed value that the seawater velocity sensor carrying out being equipped with in the seawater pipe of the reverse osmosis seawater desalting generator of high pressure reverse osmosis seawater desalting is measured is measured lower than setting value, Sea-water pressure sensor is higher than high setting value, the reverse osmosis membrane core Severe blockage of this reverse osmosis seawater desalting generator is described, through reverse osmosis membrane core fresh water very little.The high pressure sea water that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve, fresh water outlet magnetic valve and electromagnetic gas valve, terminates the high pressure reverse osmosis seawater desalting of this reverse osmosis seawater desalting device.Start fresh water pump, open the fresh water entering water electromagnetic valve of this reverse osmosis seawater desalting generator and regulate concentrated seawater water outlet electric control valve, fresh water through the fresh water entering water electromagnetic valve of this reverse osmosis seawater desalting generator and fresh water pipe, then through this reverse osmosis seawater desalting generator reverse osmosis membrane core, carry out backwash.Carrying out in the reverse osmosis seawater desalting generator of backwash, fresh water through the concentrated seawater in this reverse osmosis seawater desalting generator reverse osmosis membrane core compressing reverse osmosis membrane core through the concentrated seawater water outlet electric control valve of this reverse osmosis seawater desalting generator from the concentrated seawater outlet pipe of this reverse osmosis seawater desalting generator discharged to sea.By regulating the concentrated seawater water outlet electric control valve of this reverse osmosis seawater desalting generator to make the seawater pressure in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator reach, seawater pressure that the Sea-water pressure sensor in the seawater pipe of backwashing pressure setting value, both this reverse osmosis seawater desalting generator measures reaches backwashing pressure setting value.F) when the fresh water flow sensor in the fresh water pipe of reverse osmosis seawater desalting generator carrying out backwash detects that flow velocity exceedes setting value, when the seawater pressure that Sea-water pressure sensor in the seawater pipe of this reverse osmosis seawater desalting generator is simultaneously measured remains on backwashing pressure setting value, illustrate that the reverse osmosis membrane core Penetration ration of this reverse osmosis seawater desalting generator has reached low setting value.Conputer controlled instrument cuts out the fresh water entering water electromagnetic valve of this reverse osmosis seawater desalting generator and regulates the concentrated seawater water outlet electric control valve of this reverse osmosis seawater desalting generator, and the low pressure seawater opening this reverse osmosis seawater desalting generator goes out water solenoid valve, re-starts low pressure reverse osmosis desalinization.G) through the reverse osmosis seawater desalting generator of backwash, the process of low pressure reverse osmosis desalinization, high pressure reverse osmosis seawater desalting, again backwash is again experienced; After circulation for several times, conputer controlled instrument starts Roots blower, and electromagnetic air valve and the concentrated seawater of opening this reverse osmosis seawater desalting generator go out water solenoid valve.The high-pressure blast of Roots blower blowout passes air velocity transducer and the electromagnetic air valve of this reverse osmosis seawater desalting generator, reverse osmosis membrane core is passed from the fresh water district of this reverse osmosis seawater desalting generator, the high-pressure blast that concentrated seawater in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator is through the reverse osmosis membrane of this reverse osmosis seawater desalting generator is exerted pressure, and the concentrated seawater of this reverse osmosis seawater desalting generator that process is opened goes out water solenoid valve and concentrated seawater water outlet electric control valve is discharged in the sea large from the concentrated seawater outlet pipe of this reverse osmosis seawater desalting generator.After racking up the concentrated seawater in the reverse osmosis membrane core of this reverse osmosis seawater desalting generator, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that the reverse osmosis membrane core Penetration ration of this reverse osmosis seawater desalting generator has reached high setting value.Conputer controlled instrument cuts out the electromagnetic air valve of this reverse osmosis seawater desalting generator and concentrated seawater goes out water solenoid valve, and then this reverse osmosis seawater desalting generator carries out the reverse osmosis seawater desalting of a new round.I) after reverse osmosis desalination device normally runs, all the time have a reverse osmosis seawater desalting generator to be in back flush discharge concentrated seawater state and reverse osmosis seawater desalting generator to be in and to blow logical, discharge concentrated seawater state, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so just do not need repeatedly to start and close down fresh water pump, Roots blower, air compressor, low pressure seawater pump and high-pressure undersea water pump.
Reverse osmosis seawater desalting also can not use recuperator, but in low pressure reverse osmosis desalinization, high pressure reverse osmosis seawater desalting and backwash process, according to concentration polarization principle, concentrated seawater will be discharged in time, can improve the water rate of fresh water equally.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, concrete detailed description is further done to the present invention.
Fig. 1 is the structure principle chart of the reverse osmosis desalination device that recuperator is housed in the present invention.
Fig. 2 is the structure principle chart of the reverse osmosis desalination device not filling recuperator in the present invention.
Fig. 3 is the structure principle chart of the recuperator directly carrying out energy regenerating in the present invention.
Fig. 4 is the structure principle chart utilizing piston to carry out the recuperator of energy regenerating in the present invention.
Detailed description of the invention:
Scheme 1, shown in Fig. 1, Fig. 3 and Fig. 4, the structure of reverse osmosis desalination device is as follows: it has several reverse osmosis seawater desalting generator, reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core 2 and outside stainless steel casing 1, region between reverse osmosis membrane core 2 and stainless steel casing 1 belongs to fresh water district, and reverse osmosis membrane core 2 inside belongs to sea-water area.Upwards, one end that reverse osmosis membrane core 2 is equipped with seawater pipe 3 is downward in one end that reverse osmosis membrane core 2 is closed.Pre-treating seawater pump 15 is extracted out through husky filter, except the seawater of 16 li, the seawater well of algae, delivers to 14 li, seawater pond after the filtration of screen pack, then the heating of seawater in 14 li, seawater pond to 20 degrees Celsius.The seawater in 14 li, seawater pond after treatment extracted out by low pressure seawater pump 11, through the low pressure seawater water outlet electromagnetism 10 of respective reverse osmosis seawater desalting device opened with enter in the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting device through the ultrafiltration pottery that seawater pipe 3 li is equipped with, it is light to carry out low pressure reverse osmosis seawater.The seawater in 14 li, seawater pond after treatment extracted out by high-pressure undersea water pump 13, high pressure sea water through the respective reverse osmosis seawater desalting device opened goes out water solenoid valve 12 and enters in the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting device through the ultrafiltration pottery that seawater pipe 3 li is equipped with, and carries out high pressure reverse osmosis seawater desalting.Mechanical vibrator shakes reverse osmosis seawater desalting generator.The compressed air that air compressor 20 extrudes enters air accumulator 18 through check valve 19, from the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator of air accumulator 18 compressed air out through opening, then enter 2 li, the reverse osmosis membrane core of respective reverse osmosis seawater desalting generator through the seawater pipe 3 of respective reverse osmosis seawater desalting generator.The probe of concentration of seawater sensor, seawater velocity sensor, Sea-water pressure sensor and ultrafiltration pottery is housed in the seawater pipe 3 of each reverse osmosis seawater desalting generator.Concentrated seawater in the reverse osmosis membrane core 2 of each reverse osmosis seawater desalting device can go out water solenoid valve 21 by the concentrated seawater of the respective reverse osmosis seawater desalting generator opened and be discharged into from the seawater pipe 3 of respective reverse osmosis seawater desalting generator in the sea large.Fresh water in the fresh water district of each reverse osmosis seawater desalting generator from the fresh water pipe 23 of respective reverse osmosis seawater desalting generator out after, the fresh water outlet magnetic valve 27 through the respective reverse osmosis seawater desalting generator opened flows into fresh-water pool 26.Fresh water pump 25 extracts fresh water from fresh-water pool, through the fresh water entering water electromagnetic valve 24 of the respective reverse osmosis seawater desalting generator opening, the fresh water district of respective reverse osmosis seawater desalting generator is entered from the fresh water pipe 23 of respective reverse osmosis seawater desalting generator, then through the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting device, backwash is carried out.Utilize the energy that recuperator produces backwash, carry out energy regenerating reverse osmosis seawater desalting, realize energy regenerating.Fresh water pressure force snesor and fresh water flow sensor are housed in each fresh water pipe 23.The air velocity transducer of the wind that Roots blower 29 blows out through respective reverse osmosis seawater desalting device and the electromagnetic air valve 28 of the respective reverse osmosis seawater desalting generator opened, from the fresh water pipe 23 of respective reverse osmosis seawater desalting device enter emptying after the fresh water district of respective reverse osmosis seawater desalting generator, blow logical to the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting device.The working procedure of reverse osmosis desalination device is as follows: a) a bite seawater well 16 is dug at sandy beach by the sea, and seawater flows to 16 li, seawater well through husky filter, then throws in algae removal medicine toward 16 li, seawater well and eliminates marine alga.Pre-treating seawater pump 15 is extracted out through husky filter, except the seawater of 16 li, the seawater well of algae, and 14 li, seawater pond is delivered in the filtration through screen pack, then the heating of seawater in seawater pond 14 to 20 degrees Celsius.B) seawater in 14 li, seawater pond after treatment extracted out by low pressure seawater pump 11, several low pressure seawater through opening go out water solenoid valve 10, enter in respective reverse osmosis membrane core 2 through the ultrafiltration pottery in the seawater pipe 3 of respective reverse osmosis seawater desalting generator.Fresh water reaches the fresh water district of respective reverse osmosis seawater desalting generator through the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization, the fresh water in the fresh water district of then respective reverse osmosis seawater desalting generator flows into fresh-water pool 26 by the fresh water outlet magnetic valve 27 of the respective reverse osmosis seawater desalting generator opened.There are polarization phenomena in the concentration of seawater in the reverse osmosis membrane core 2 of the reverse osmosis seawater desalting generator c) in running, the concentration of seawater near reverse osmosis membrane is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core 2 is not high.Mechanical vibrator, the vibrations of reverse osmosis seawater desalting generator, stirs the seawater inside reverse osmosis membrane core 2.The compressed air that air compressor 20 extrudes enters air accumulator 18 through check valve 19, from the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator of air accumulator 18 compressed air out through opening, the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator is entered from the seawater pipe 3 of respective reverse osmosis seawater desalting generator, seawater inside the reverse osmosis membrane core 2 of stirring reverse osmosis seawater desalting generator, makes the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core 2.Meanwhile, according to the information that the Sea-water pressure sensor of respective reverse osmosis seawater desalting generator provides, by the time length regulating the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator to open.D) when the flow speed value that the seawater velocity sensor be equipped with in the seawater pipe 3 of certain reverse osmosis seawater desalting generator is measured is greater than low-pressure settings lower than the seawater pressure that setting value and Sea-water pressure sensor are measured, illustrate the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator have some blocking and the pressure of seawater is too little, through the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator fresh water very little.The low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve 10, stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.Start high-pressure undersea water pump 13 seawater in 14 li, seawater pond is after treatment extracted out, the high pressure sea water opening that reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization that just stopped goes out water solenoid valve 12, and high pressure sea water enters in the reverse osmosis membrane core 2 of that reverse osmosis seawater desalting generator through the ultrafiltration pottery of the seawater pipe 3 li of that reverse osmosis seawater desalting generator.Fresh water reaches the fresh water district of that reverse osmosis seawater desalting generator through the reverse osmosis membrane core 2 of that reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting, then fresh water flows into fresh-water pool 26 by the fresh water outlet magnetic valve 27 of that reverse osmosis seawater desalting generator opened.E) when the flow speed value that the seawater velocity sensor carrying out being equipped with in the seawater pipe 3 of that reverse osmosis seawater desalting generator of high pressure reverse osmosis seawater desalting when that is measured is greater than high pressure set point lower than the seawater pressure that setting value and Sea-water pressure sensor are measured, reverse osmosis membrane core 2 Severe blockage of that reverse osmosis seawater desalting generator is described, through the reverse osmosis membrane core 2 of that reverse osmosis seawater desalting generator fresh water very little.The high pressure sea water that conputer controlled instrument cuts out that reverse osmosis seawater desalting generator goes out water solenoid valve 12 and fresh water outlet magnetic valve 27 and electromagnetic gas valve 17, start fresh water pump 25, open the fresh water entering water electromagnetic valve 24 of that reverse osmosis seawater desalting generator and open the energy regenerating seawater entering water electromagnetic valve 6 of that reverse osmosis seawater desalting generator; Close the energy regenerating seawater that one of them low pressure seawater being in the reverse osmosis seawater desalting generator of low pressure reverse osmosis goes out water solenoid valve 10 and open this reverse osmosis seawater desalting generator simultaneously and go out water solenoid valve 5, fresh water through open fresh water entering water electromagnetic valve 24 reverse osmosis seawater desalting generator reverse osmosis membrane core 2, carry out backwash.Inside the reverse osmosis seawater desalting generator carrying out backwash, fresh water oppresses the seawater of 2 li, reverse osmosis membrane core through the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator, through the energy regenerating seawater entering water electromagnetic valve 6 of this reverse osmosis seawater desalting generator, enter in the container 7 of recuperator, the energy regenerating seawater opened that stopped the reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization by other again goes out water solenoid valve 5, enter in the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator, carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator.Or inside the reverse osmosis seawater desalting generator carrying out backwash, the seawater of oppressing 2 li, reverse osmosis membrane core through reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator of fresh water, through the energy regenerating seawater entering water electromagnetic valve 6 opened of this reverse osmosis seawater desalting generator, enter container 7 rear end of recuperator, the large piston 8 promoted in container 7 moves forward, thus drives valve piston 8 to move forward; The energy regenerating seawater opened that stopped the reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization by other goes out water solenoid valve 5, the seawater of container 7 leading portion is pushed and opens energy regenerating seawater and go out in the reverse osmosis membrane core 2 of the reverse osmosis seawater desalting generator of water solenoid valve 5, carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator.F) when the fresh water flow sensor of fresh water pipe 23 li of the reverse osmosis seawater desalting generator carrying out backwash measure that flow velocity exceedes setting value, fresh water pressure force snesor measure fresh water pressure exceed energy regenerating pressure settings lower than the seawater pressure that the Sea-water pressure sensor of setting value and seawater pipe 3 li is measured time, illustrate that reverse osmosis membrane core 2 Penetration ration of the reverse osmosis seawater desalting generator carrying out backwash reaches standard.Conputer controlled instrument cuts out through the fresh water entering water electromagnetic valve 24 of the reverse osmosis seawater desalting generator of backwash and energy regenerating seawater entering water electromagnetic valve 5, and the low pressure seawater opening this reverse osmosis seawater desalting generator goes out water solenoid valve 10, re-starts low pressure reverse osmosis desalinization.Then the low pressure seawater opening the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization goes out water solenoid valve 10 and closes the energy regenerating seawater carrying out the reverse osmosis seawater desalting generator of energy regenerating desalinization to go out water solenoid valve 5, recovers the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.Or the low pressure seawater opening the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization goes out water solenoid valve 5, recover the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, open energy regenerating seawater drain solenoid valve 9, valve piston 8 in the container 7 of recuperator has the seawater of certain pressure intensity promotion valve piston 8 to drive large piston 8 to move backward above, and the seawater on rear side of the large piston 8 in the container 7 of recuperator is discharged to 14 li, seawater pond through the energy regenerating seawater drain solenoid valve 9 opened.Then close energy regenerating seawater drain solenoid valve 9 and go out water solenoid valve 5 with the energy regenerating seawater of the reverse osmosis seawater desalting generator carrying out energy regenerating desalinization.G) through the reverse osmosis seawater desalting generator of backwash, the process of low pressure reverse osmosis desalinization, high pressure reverse osmosis seawater desalting, again backwash is again experienced.After circulation for several times, when the concentration value that concentration sensor in the seawater pipe 3 of the reverse osmosis seawater desalting generator in the process of backwash is measured reaches setting value, conputer controlled instrument cuts out this energy regenerating seawater entering water electromagnetic valve 6 completing the reverse osmosis seawater desalting generator of backwash and opens this concentrated seawater completing the reverse osmosis seawater desalting generator of backwash and goes out water solenoid valve 21.Fresh water oppresses concentrated seawater through this reverse osmosis membrane core 2 completing the reverse osmosis seawater desalting generator of backwash, concentrated seawater carries out backwash through the ultrafiltration pottery of the seawater pipe 3 li of this reverse osmosis seawater desalting generator to ultrafiltration pottery, then the concentrated seawater of this reverse osmosis seawater desalting generator through opening goes out water solenoid valve 21 and is discharged into sea.H), when the pressure that the Sea-water pressure sensor that the fresh water pressure that the flow velocity that by the time the fresh water flow sensor of the fresh water pipe 23 li of this reverse osmosis seawater desalting generator measures fresh water exceedes another setting value, the fresh water pressure force snesor of fresh water pipe 23 li of this reverse osmosis seawater desalting generator is measured is less than the seawater pipe 3 li of another setting value and this reverse osmosis seawater desalting generator is measured is less than setting value, illustrate that the ultrafiltration pottery Penetration ration of this reverse osmosis seawater desalting generator has reached low setting.Conputer controlled instrument starts Roots blower 29, opens and goes out water solenoid valve 21 through the electromagnetic air valve 28 of the reverse osmosis seawater desalting generator of backwash and concentrated seawater.The high-pressure blast that Roots blower 29 blows out is through through the air velocity transducer of the reverse osmosis seawater desalting generator of backwash and electromagnetic air valve 28, reverse osmosis membrane core 2 is passed from the fresh water district of the reverse osmosis seawater desalting generator through backwash, reverse osmosis membrane core 2 li of remaining concentrated seawaters of this reverse osmosis seawater desalting generator are exerted pressure, remaining concentrated seawater is through the ultrafiltration pottery of this reverse osmosis seawater desalting generator seawater pipe 3 li, backwash is carried out to ultrafiltration pottery, then the concentrated seawater passing through this reverse osmosis seawater desalting generator opened goes out water solenoid valve 21 and is discharged in the sea large.After racking up the concentrated seawater of 2 li, reverse osmosis membrane core of this reverse osmosis seawater desalting generator, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator and ultrafiltration pottery Penetration ration have reached high setting.Conputer controlled instrument cuts out the electromagnetic air valve 28 of this reverse osmosis seawater desalting generator and concentrated seawater goes out water solenoid valve 21, and then this reverse osmosis seawater desalting generator just can carry out the reverse osmosis seawater desalting of a new round.I) after reverse osmosis desalination device normally runs, all the time have that a reverse osmosis seawater desalting generator is in backwash state, reverse osmosis seawater desalting generator is in anti-energy recovery state and a reverse osmosis seawater desalting generator is in and blows logical discharge concentrated seawater state, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so just do not need repeatedly to start and close down fresh water pump 25, Roots blower 29, air compressor 20, low pressure seawater pump 11 and high-pressure undersea water pump 13.
Shown in anti-case 2, Fig. 2, the structure of reverse osmosis desalination device is as follows: it has multiple reverse osmosis seawater desalting generator, and reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core 2 and outside stainless steel casing 1.Region between reverse osmosis membrane core 2 and stainless steel casing 1 belongs to fresh water district, and reverse osmosis membrane core 2 inside belongs to sea-water area.Reverse osmosis seawater desalting generator is vertically installed, and seawater pipe 3 is contained in reverse osmosis membrane core 2 upper end, and concentrated seawater outlet pipe 4 is contained in reverse osmosis membrane core 2 lower end.Pre-treating seawater pump 15 is extracted out through husky filter, except the seawater of 16 li, the seawater well of algae, delivers to 14 li, seawater pond after filter screen filtration, then the heating of seawater in 14 li, seawater pond to 20 degrees Celsius.The seawater in 14 li, seawater pond after treatment extracted out by low pressure seawater pump 11, low pressure seawater through the respective reverse osmosis seawater desalting generator opened goes out water solenoid valve 10, enter the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator from seawater 3 pipe of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization.The seawater in 14 li, seawater pond after treatment extracted out by high-pressure undersea water pump 13, high pressure sea water through the respective reverse osmosis seawater desalting generator opened goes out water solenoid valve 12, enter the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator from the seawater pipe 3 of respective reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting.Mechanical vibrator shakes reverse osmosis seawater desalting generator.The compressed air that air compressor 20 extrudes enters air accumulator 18 through check valve 19, enters the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator from air accumulator 18 compressed air out through the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator opened from the concentrated seawater outlet pipe 4 of respective reverse osmosis seawater desalting generator.The probe of seawater velocity sensor, Sea-water pressure sensor and concentration of seawater sensor is housed in the seawater pipe 3 of each reverse osmosis seawater desalting generator.The concentrated seawater water outlet electric control valve 22 that concentrated seawater in the reverse osmosis membrane core 2 of reverse osmosis seawater desalting generator can go out water solenoid valve 21 or respective reverse osmosis seawater desalting generator by the concentrated seawater of the respective reverse osmosis seawater desalting generator opened is discharged in the sea large from the concentrated seawater outlet pipe 4 of respective reverse osmosis seawater desalting generator.The fresh water in the fresh water district of reverse osmosis seawater desalting generator from the fresh water pipe 23 of respective reverse osmosis seawater desalting generator out after, the fresh water outlet magnetic valve 27 through the respective reverse osmosis seawater desalting generator opened flows into fresh-water pool 26.Fresh water pump 25 extracts fresh water from fresh-water pool 26, through the fresh water entering water electromagnetic valve 24 of the respective reverse osmosis seawater desalting generator opening, enter the fresh water district of respective reverse osmosis seawater desalting generator from the fresh water pipe 23 of respective reverse osmosis seawater desalting generator, then pass the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator, carry out backwash.Fresh water pressure force snesor and fresh water flow sensor are housed in the fresh water pipe 23 of each reverse osmosis seawater desalting generator.The wind that Roots blower 29 blows out is through the electromagnetic air valve 28 of air velocity transducer with the respective reverse osmosis seawater desalting generator opened, from the fresh water pipe 23 of respective reverse osmosis seawater desalting generator enter emptying after the fresh water district of respective reverse osmosis seawater desalting generator, blow logical to the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator.The working procedure of reverse osmosis desalination device is as follows: a) a bite seawater well 16 is dug at sandy beach by the sea, and seawater flows to 16 li, seawater well through husky filter, then throws in algae removal medicine toward 16 li, seawater well and eliminates marine alga.Pre-treating seawater pump 15 is extracted out through husky filter, except the seawater of 16 li, the seawater well of algae, and the filtration through screen pack is extracted into 14 li, seawater pond, then the heating of seawater in seawater pond 14 to 20 degrees Celsius.B) seawater in 14 li, seawater pond after treatment extracted out by low pressure seawater pump 11, low pressure seawater through the several reverse osmosis seawater desalting generators opened goes out water solenoid valve 10, enter in the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator through the ultrafiltration pottery in the seawater pipe 3 of respective reverse osmosis seawater desalting generator, fresh water arrives the fresh water district of reverse osmosis seawater desalting generator through the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator, carry out low pressure reverse osmosis desalinization, then fresh water flows into fresh-water pool 26 by the fresh water outlet magnetic valve 27 of the respective reverse osmosis seawater desalting generator opened.C) concentration of seawater of reverse osmosis seawater desalting generator near reverse osmosis membrane in running is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core 2 is not high.Mechanical vibrator is the seawater inside the vibrations of reverse osmosis seawater desalting generator, stirring reverse osmosis membrane core 2.The compressed air that air compressor 20 extrudes enters air accumulator 18 through check valve 19, enter the reverse osmosis membrane core 2 of respective reverse osmosis seawater desalting generator from the electromagnetic gas valve 17 of air accumulator 18 compressed air out through the respective reverse osmosis seawater desalting generator opened from the concentrated seawater outlet pipe 4 of respective reverse osmosis seawater desalting generator, stir the seawater of the inside, make the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core 2.Ratio due to concentrated seawater is great and sink to the lower end of reverse osmosis membrane core 2, and polarization phenomena appear in the concentration of seawater in reverse osmosis membrane core 2.Simultaneously, according to the information that the Sea-water pressure sensor inside the seawater pipe 3 of respective reverse osmosis seawater desalting generator provides, by the time length regulating the electromagnetic gas valve 17 of respective reverse osmosis seawater desalting generator to open, the seawater pressure inside the reverse osmosis membrane core 2 regulating this reverse osmosis seawater desalting generator.The data that conputer controlled instrument spreads out of according to the concentration of seawater sensor of respective reverse osmosis seawater desalting generator, regulate the size of the concentrated seawater water outlet electric control valve 22 of respective reverse osmosis seawater desalting generator, concentrated seawater through the concentrated seawater water outlet electric control valve 22 of respective reverse osmosis seawater desalting generator from the concentrated seawater outlet pipe 4 of respective reverse osmosis seawater desalting generator discharged to sea.D) when the flow speed value that the seawater velocity sensor be equipped with in the seawater pipe 3 of certain reverse osmosis seawater desalting generator is measured measures pressure values higher than low setting value lower than setting value and Sea-water pressure sensor, illustrate the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator have some blockings, cause seawater pressure too large, and through the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator fresh water very little.The low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve 10, stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator.Start high-pressure undersea water pump 13 seawater in 14 li, seawater pond is after treatment extracted out, the high pressure sea water opening the reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization that just stopped goes out water solenoid valve 12, and high pressure sea water enters in the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator through the seawater pipe 3 li of this reverse osmosis seawater desalting generator.Fresh water through the reverse osmosis membrane core 2 of this reverse osmosis seawater desalting generator reach this reverse osmosis seawater desalting generator fresh water district, carry out high pressure reverse osmosis seawater desalting, then fresh water flows into fresh-water pool 26 by the fresh water outlet magnetic valve 27 of this reverse osmosis seawater desalting generator opened.E) when the seawater pressure that the flow speed value that the seawater velocity sensor carrying out being equipped with in the seawater pipe 3 of the reverse osmosis seawater desalting generator of high pressure reverse osmosis seawater desalting is measured is measured lower than setting value, Sea-water pressure sensor is higher than high setting value, reverse osmosis membrane core 2 Severe blockage of this reverse osmosis seawater desalting generator is described, through reverse osmosis membrane core 2 fresh water very little.The high pressure sea water that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve 12, fresh water outlet magnetic valve 27 and electromagnetic gas valve 17, terminates the high pressure reverse osmosis seawater desalting of this reverse osmosis seawater desalting device.Start fresh water pump 25, open the fresh water entering water electromagnetic valve 24 of this reverse osmosis seawater desalting generator and regulate concentrated seawater water outlet electric control valve 22, fresh water through the fresh water entering water electromagnetic valve 24 of this reverse osmosis seawater desalting generator and fresh water pipe 23, then through this reverse osmosis seawater desalting generator reverse osmosis membrane core 2, carry out backwash.Carrying out in the reverse osmosis seawater desalting generator of backwash, the fresh water concentrated seawater of oppressing 2 li, reverse osmosis membrane core through this reverse osmosis seawater desalting generator reverse osmosis membrane core 2 through the concentrated seawater water outlet electric control valve 22 of this reverse osmosis seawater desalting generator from the concentrated seawater outlet pipe 4 of this reverse osmosis seawater desalting generator discharged to sea.The seawater pressure measured by the Sea-water pressure sensor regulating the concentrated seawater water outlet electric control valve 22 of this reverse osmosis seawater desalting generator to make the seawater pressure of 2 li, the reverse osmosis membrane core of this reverse osmosis seawater desalting generator reach the seawater pipe 3 li of backwashing pressure setting value, both this reverse osmosis seawater desalting generator reaches backwashing pressure setting value.F) when the fresh water flow sensor of fresh water pipe 23 li of the reverse osmosis seawater desalting generator carrying out backwash detects that flow velocity exceedes setting value, when the seawater pressure that the Sea-water pressure sensor of the seawater pipe 3 li of this reverse osmosis seawater desalting generator is measured simultaneously remains on backwashing pressure setting value, illustrate that reverse osmosis membrane core 2 Penetration ration of this reverse osmosis seawater desalting generator has reached low setting value.Conputer controlled instrument cuts out the fresh water entering water electromagnetic valve 24 of this reverse osmosis seawater desalting generator and regulates the concentrated seawater water outlet electric control valve 22 of this reverse osmosis seawater desalting generator, and the low pressure seawater opening this reverse osmosis seawater desalting generator goes out water solenoid valve 10, re-starts low pressure reverse osmosis desalinization.G) through the reverse osmosis seawater desalting generator of backwash, the process of low pressure reverse osmosis desalinization, high pressure reverse osmosis seawater desalting, again backwash is again experienced; After circulation for several times, conputer controlled instrument starts Roots blower 29, and electromagnetic air valve 28 and the concentrated seawater of opening this reverse osmosis seawater desalting generator go out water solenoid valve 21.The high-pressure blast that Roots blower 29 blows out is through the light air velocity transducer than generator of this counter-infiltration seawater and electromagnetic air valve 28, reverse osmosis membrane core 2 is passed from the fresh water district of this reverse osmosis seawater desalting generator, the high-pressure blast that the concentrated seawater of 2 li, the reverse osmosis membrane core of this reverse osmosis seawater desalting generator is through the reverse osmosis membrane of this reverse osmosis seawater desalting generator is exerted pressure, the concentrated seawater of this reverse osmosis seawater desalting generator that process is opened goes out water solenoid valve 21 and concentrated seawater water outlet electric control valve 22 is discharged in the sea large from the concentrated seawater outlet pipe 4 of this reverse osmosis seawater desalting generator.After racking up the concentrated seawater of 2 li, reverse osmosis membrane core of this reverse osmosis seawater desalting generator, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that reverse osmosis membrane core 2 Penetration ration of this reverse osmosis seawater desalting generator has reached high setting value.Conputer controlled instrument cuts out the electromagnetic air valve 28 of this reverse osmosis seawater desalting generator and concentrated seawater goes out water solenoid valve 21, and then this reverse osmosis seawater desalting generator carries out the reverse osmosis seawater desalting of a new round.I) after reverse osmosis desalination device normally runs, all the time have a reverse osmosis seawater desalting generator to be in back flush discharge concentrated seawater state and reverse osmosis seawater desalting generator to be in and to blow logical, discharge concentrated seawater state, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so just do not need repeatedly to start and close down fresh water pump 25, Roots blower 29, air compressor 20, low pressure seawater pump 11 and high-pressure undersea water pump 13.

Claims (4)

1. a recuperator, it is characterized in that: recuperator is by container (7), the energy regenerating seawater entering water electromagnetic valve (6) supporting with reverse osmosis seawater desalting generator and energy regenerating seawater go out water solenoid valve (5) and form, seawater in the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator can enter in the container (7) of recuperator by the energy regenerating seawater entering water electromagnetic valve (6) opened, going out water solenoid valve (5) by the energy regenerating seawater opened of other reverse osmosis seawater desalting generator again enters in other reverse osmosis membrane core (2), carry out energy regenerating reverse osmosis seawater desalting.
2. a recuperator, it is characterized in that: the container (7) of recuperator is welded by pre-small post-large two pipes, container (7) is built with pre-small post-large two pistons (8) composition connected together by piston rod, two pistons (8) respectively fill a bowl-type hydrostatic seal circle, the energy regenerating seawater entering water electromagnetic valve (6) supporting with reverse osmosis seawater desalting generator is equipped with in container (7) rear end, an energy regenerating seawater drain solenoid valve (9) is also equipped with in container (7) rear end, container (7) front end is equipped with the energy regenerating seawater supporting with reverse osmosis seawater desalting generator and is gone out water solenoid valve (5), seawater in the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator can enter container (7) rear end of recuperator by the energy regenerating seawater entering water electromagnetic valve (6) opened, the large piston (8) promoted in container (7) moves forward, thus drive valve piston (8) to move forward, water solenoid valve (5) is gone out by the energy regenerating seawater opened of other reverse osmosis seawater desalting generator, the seawater of container (7) leading portion is pushed in other reverse osmosis membrane core (2), carry out energy regenerating reverse osmosis seawater desalting.
3. improve the method for reverse osmosis desalination device water rate, the structure of reverse osmosis desalination device is as follows: it has several reverse osmosis seawater desalting generators, reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core and outside stainless steel casing, region between reverse osmosis membrane core and stainless steel casing belongs to fresh water district, reverse osmosis membrane core inner belongs to sea-water area, upwards, it is downward that reverse osmosis membrane core is equipped with one end of seawater pipe in one end of reverse osmosis membrane core sealing; Pre-treating seawater pump, extracting out through husky filter, except the seawater in the seawater well of algae, is delivered in seawater pond, then ten degrees Celsius of the heating of seawaters to two in seawater pond after the filtration of screen pack; Low pressure seawater pump is extracted the seawater in seawater pond after treatment out, the ultrafiltration pottery being equipped with in the low pressure seawater water outlet electromagnetism of the device of reverse osmosis seawater desalting separately opened and the seawater pipe through reverse osmosis seawater desalting generator separately enters in the reverse osmosis membrane core of reverse osmosis seawater desalting device separately, carries out low pressure reverse osmosis desalinization; High-pressure undersea water pump is extracted the seawater in seawater pond after treatment out, high pressure sea water through the device of reverse osmosis seawater desalting separately of opening goes out water solenoid valve and passes the ultrafiltration pottery being equipped with in the seawater pipe of reverse osmosis seawater desalting generator separately to enter in the reverse osmosis membrane core of reverse osmosis seawater desalting device separately, carries out high pressure reverse osmosis seawater desalting; Mechanical vibrator shakes reverse osmosis seawater desalting generator, the compressed air that air compressor extrudes enters air accumulator through check valve, proceed from air accumulator compressed air out through the electromagnetic gas valve of the generator of reverse osmosis seawater desalting separately of opening and through the seawater pipe of reverse osmosis seawater desalting generator separately to the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately; Probe, seawater velocity sensor, Sea-water pressure sensor and the ultrafiltration pottery of concentration of seawater sensor are housed in the seawater pipe of each reverse osmosis seawater desalting generator; Concentrated seawater in the reverse osmosis membrane core of each reverse osmosis seawater desalting device can be gone out water solenoid valve from the seawater tube drainage of reverse osmosis seawater desalting generator separately in the sea large by the concentrated seawater of the generator of reverse osmosis seawater desalting separately of opening; Fresh water in the fresh water district of each reverse osmosis seawater desalting generator from the fresh water pipe of reverse osmosis seawater desalting generator separately out, the fresh water outlet magnetic valve through the generator of reverse osmosis seawater desalting separately of opening flows into fresh-water pool; Fresh water pump extracts fresh water from fresh-water pool, through the fresh water entering water electromagnetic valve of the generator of reverse osmosis seawater desalting separately of opening, proceed from the fresh water pipe of reverse osmosis seawater desalting generator separately to the fresh water district of reverse osmosis seawater desalting generator separately, then through the reverse osmosis membrane core of reverse osmosis seawater desalting device separately, backwash is carried out; Utilize the energy that recuperator produces backwash, carry out energy regenerating reverse osmosis seawater desalting, realize energy regenerating, fresh water pressure force snesor and fresh water flow sensor are housed in each fresh water pipe; The wind of Roots blower blowout is through the electromagnetic air valve of the air velocity transducer of reverse osmosis seawater desalting device separately and the generator of reverse osmosis seawater desalting separately opened, the fresh water pipe of proceeding from reverse osmosis seawater desalting device is separately to the fresh water district of the generator of reverse osmosis seawater desalting separately emptyingBlow logical to the reverse osmosis membrane core of reverse osmosis seawater desalting device separately, it is characterized in that: the working procedure of reverse osmosis desalination device is as follows: a) on sandy beach by the sea, dig a bite seawater well (16), it is inner that seawater flows to seawater well (16) through husky filter, then marine alga is eliminated toward the inner input of seawater well (16) algae removal medicine, pre-treating seawater pump (15) is extracted seawater inner the seawater well (16) of filtering, remove algae through sand out, it is inner that seawater pond (14) is delivered in the filtration of process screen pack, then ten degrees Celsius of the heating of seawaters to two in seawater pond (14), b) low pressure seawater pump (11) is extracted seawater inner seawater pond (14) after treatment out, several low pressure seawater through opening go out water solenoid valve (10), enter separately in reverse osmosis membrane core (2) through the ultrafiltration pottery in the seawater pipe (3) of reverse osmosis seawater desalting generator separately, fresh water reaches the fresh water district of reverse osmosis seawater desalting generator separately through the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator separately, carry out low pressure reverse osmosis desalinization, then the fresh water in the fresh water district of reverse osmosis seawater desalting generator is flowed into fresh-water pool (26) by the fresh water outlet magnetic valve (27) of the generator of reverse osmosis seawater desalting separately of opening separately, c) there are polarization phenomena in the concentration of seawater in the reverse osmosis membrane core (2) of the reverse osmosis seawater desalting generator in running, concentration of seawater near reverse osmosis membrane is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core (2) is not high, mechanical vibrator, the vibrations of reverse osmosis seawater desalting generator, stirs the seawater of reverse osmosis membrane core (2) the inside of reverse osmosis seawater desalting generator, the compressed air that air compressor (20) extrudes enters air accumulator (18) through check valve (19), from the electromagnetic gas valve (17) of air accumulator (18) compressed air out through the generator of reverse osmosis seawater desalting separately of opening, the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator is separately entered from the seawater pipe (3) of reverse osmosis seawater desalting generator separately, stir the seawater of reverse osmosis membrane core (2) the inside of reverse osmosis seawater desalting generator, make the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core (2), the information simultaneously providing according to the Sea-water pressure sensor of reverse osmosis seawater desalting generator separately, by the time length that regulates the electromagnetic gas valve (17) of reverse osmosis seawater desalting generator separately to open, d) when the seawater pressure that the flow speed value of measuring when the seawater velocity sensor being equipped with in the seawater pipe (3) of certain reverse osmosis seawater desalting generator is measured lower than setting value and Sea-water pressure sensor is greater than low-pressure settings, illustrate that the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator has some obstructions, and the pressure of seawater is too little, through the fresh water of the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator very little, the low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve (10), stop the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, start high-pressure undersea water pump (13) seawater inner seawater pond (14) is after treatment extracted out,The high pressure sea water of opening that reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization just have been stopped goes out water solenoid valve (12), high pressure sea water enters in the reverse osmosis membrane core (2) of that reverse osmosis seawater desalting generator through the inner ultrafiltration pottery of the seawater pipe (3) of that reverse osmosis seawater desalting generator, fresh water reaches the fresh water district of that reverse osmosis seawater desalting generator through the reverse osmosis membrane core (2) of that reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting, then fresh water is flowed into fresh-water pool (26) by the fresh water outlet magnetic valve (27) of that reverse osmosis seawater desalting generator of opening, e) when the seawater pressure that the flow speed value that the seawater velocity sensor that is carrying out being equipped with in the seawater pipe (3) of that reverse osmosis seawater desalting generator of high pressure reverse osmosis seawater desalting when that is measured is measured lower than setting value and Sea-water pressure sensor is greater than high pressure set point, reverse osmosis membrane core (2) Severe blockage of that reverse osmosis seawater desalting generator is described, through the fresh water of the reverse osmosis membrane core (2) of that reverse osmosis seawater desalting generator very little, the high pressure sea water that conputer controlled instrument cuts out that reverse osmosis seawater desalting generator goes out water solenoid valve (12) and fresh water outlet magnetic valve (27) and electromagnetic gas valve (17), start fresh water pump (25), the fresh water entering water electromagnetic valve (24) of opening that reverse osmosis seawater desalting generator and the energy regenerating seawater entering water electromagnetic valve (6) of opening that reverse osmosis seawater desalting generator, the energy regenerating seawater that the low pressure seawater of simultaneously closing the reverse osmosis seawater desalting generator that one of them is in low pressure reverse osmosis goes out water solenoid valve (10) and opens this reverse osmosis seawater desalting generator goes out water solenoid valve (5), fresh water is through the reverse osmosis membrane core (2) of the reverse osmosis seawater desalting generator that opens fresh water entering water electromagnetic valve (24), carry out backwash, inside the reverse osmosis seawater desalting generator that carries out backwash, fresh water passes the energy regenerating seawater entering water electromagnetic valve (6) of this reverse osmosis seawater desalting generator through the inner seawater of reverse osmosis membrane core (2) the compressing reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator, enter in the container (7) of recuperator, the energy regenerating seawater of opening that be have been stopped the reverse osmosis seawater desalting generator of low pressure reverse osmosis desalinization again by other goes out in the reverse osmosis membrane core (2) that water solenoid valve (5) enters this reverse osmosis seawater desalting generator, carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator, or inside the reverse osmosis seawater desalting generator that carries out backwash, the energy regenerating seawater entering water electromagnetic valve (6) of opening that passes this reverse osmosis seawater desalting generator through the inner seawater of reverse osmosis membrane core (2) compressing reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator of fresh water, enter container (7) rear end of recuperator, the large piston (8) promoting in container (7) moves forward, thus valve piston (8) is driven to move forward, water solenoid valve (5) is gone out by other energy regenerating seawater of opening of reverse osmosis seawater desalting generator that have been stopped low pressure reverse osmosis desalinization,The seawater of container (7) leading portion is pushed in the reverse osmosis membrane core (2) that opens the reverse osmosis seawater desalting generator that energy regenerating seawater goes out water solenoid valve (5), carry out energy regenerating reverse osmosis seawater desalting, namely fresh water is through the process of the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator, f) when the inner fresh water flow sensor of the fresh water pipe (23) of the reverse osmosis seawater desalting generator that carries out backwash is measured flow velocity when exceeding setting value, fresh water pressure force snesor and measure seawater pressure that fresh water pressure measures lower than the inner Sea-water pressure sensor of setting value and seawater pipe (3) and exceed energy regenerating pressure settings, illustrate that reverse osmosis membrane core (2) Penetration ration of the reverse osmosis seawater desalting generator that carries out backwash has reached standard, conputer controlled instrument cuts out through the fresh water entering water electromagnetic valve (24) of the reverse osmosis seawater desalting generator of backwash and energy regenerating seawater entering water electromagnetic valve (5), the low pressure seawater of opening this reverse osmosis seawater desalting generator goes out water solenoid valve (10), re-start low pressure reverse osmosis desalinization, then the energy regenerating seawater that the low pressure seawater of opening the reverse osmosis seawater desalting generator that carried out energy regenerating desalinization goes out water solenoid valve (10) and closes the reverse osmosis seawater desalting generator that carried out energy regenerating desalinization goes out water solenoid valve (5), recover the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, or the low pressure seawater of opening the reverse osmosis seawater desalting generator that carries out energy regenerating desalinization goes out water solenoid valve (5), recover the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, open energy regenerating seawater drain solenoid valve (9), valve piston (8) in the container (7) of recuperator has the seawater promotion valve piston (8) of certain pressure intensity to drive large piston (8) to move backward above, it is inner that the seawater of large piston (8) rear side in the container (7) of recuperator is discharged to seawater pond (14) through the energy regenerating seawater drain solenoid valve (9) of opening, the energy regenerating seawater of reverse osmosis seawater desalting generator of then closing energy regenerating seawater drain solenoid valve (9) and carrying out energy regenerating desalinization goes out water solenoid valve (5), g) through the reverse osmosis seawater desalting generator of backwash, experience low pressure reverse osmosis desalinization again, high pressure reverse osmosis seawater desalting, the process of backwash again, after circulation for several times, when the concentration value that concentration sensor in the seawater pipe (3) of the reverse osmosis seawater desalting generator in the process of backwash is measured reaches setting value, the energy regenerating seawater entering water electromagnetic valve (6) that conputer controlled instrument cuts out the reverse osmosis seawater desalting generator that this completes backwash and the concentrated seawater of opening the reverse osmosis seawater desalting generator that this completes backwash go out water solenoid valve (21), fresh water passes reverse osmosis membrane core (2) the compressing concentrated seawater of the reverse osmosis seawater desalting generator that this completes backwash, concentrated seawater carries out backwash through the inner ultrafiltration pottery of the seawater pipe (3) of this reverse osmosis seawater desalting generator to ultrafiltration pottery, the concentrated seawater that passes through this reverse osmosis seawater desalting generator of opening again goes out water solenoid valve (21) and is discharged into sea,H) flow velocity that by the time the inner fresh water flow sensor of the fresh water pipe (23) of this reverse osmosis seawater desalting generator is measured fresh water exceedes another setting value, when the fresh water pressure that the inner fresh water pressure force snesor of the fresh water pipe (23) of this reverse osmosis seawater desalting generator is measured is less than pressure that the inner Sea-water pressure sensor of the seawater pipe (3) of another setting value and this reverse osmosis seawater desalting generator measures and is less than setting value, the ultrafiltration pottery Penetration ration that this reverse osmosis seawater desalting generator is described has reached low setting, conputer controlled instrument starts Roots blower (29), electromagnetic air valve (28) and the concentrated seawater of opening the reverse osmosis seawater desalting generator through backwash go out water solenoid valve (21), the high-pressure blast of Roots blower (29) blowout passes air velocity transducer and electromagnetic air valve (28) through the reverse osmosis seawater desalting generator of backwash, reverse osmosis membrane core (2) is passed from the fresh water district of the reverse osmosis seawater desalting generator through backwash, the inner remaining concentrated seawater of reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator is exerted pressure, remaining concentrated seawater is through the inner ultrafiltration pottery of this reverse osmosis seawater desalting generator seawater pipe (3), backwash is carried out to ultrafiltration pottery, then the concentrated seawater that passes through this reverse osmosis seawater desalting generator of opening goes out water solenoid valve (21) and is discharged in the sea large, after the concentrated seawater that the reverse osmosis membrane core (2) that racks up this reverse osmosis seawater desalting generator is inner, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator and ultrafiltration pottery Penetration ration have reached high setting, electromagnetic air valve (28) and concentrated seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator go out water solenoid valve (21), and then this reverse osmosis seawater desalting generator just can carry out the reverse osmosis seawater desalting of a new round, i) after reverse osmosis desalination device normal functioning, all the time a reverse osmosis seawater desalting generator is had to be in backwash state, reverse osmosis seawater desalting generator is in anti-energy recovery state and a reverse osmosis seawater desalting generator is in the logical discharge concentrated seawater state that blows, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so do not need repeatedly to start and close down fresh water pump (25), Roots blower (29), air compressor (20), low pressure seawater pump (11) and high-pressure undersea water pump (13).
4. improve the method for reverse osmosis desalination device water rate, the structure of reverse osmosis desalination device is as follows: it has multiple reverse osmosis seawater desalting generators, reverse osmosis seawater desalting generator is made up of inner counter permeable membrane core and outside stainless steel casing, region between reverse osmosis membrane core and stainless steel casing belongs to fresh water district, reverse osmosis membrane core inner belongs to sea-water area, reverse osmosis seawater desalting generator is vertically installed, enter seawater pipe and be contained in reverse osmosis membrane core upper end, concentrated seawater pipe is contained in reverse osmosis membrane core lower end; Pre-treating seawater pump is extracted the seawater in the husky seawater well of filtering, remove algae out, delivers in seawater pond, then seawater Chi Lihaishui is heated to 20 degrees Celsius after filter screen filtration; Low pressure seawater pump is extracted the seawater in seawater pond after treatment out, low pressure seawater through the generator of reverse osmosis seawater desalting separately of opening goes out water solenoid valve, the seawater pipe of proceeding from reverse osmosis seawater desalting generator separately, to the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately, carries out low pressure reverse osmosis desalinization; High-pressure undersea water pump is extracted the seawater in seawater pond after treatment out, high pressure sea water through the generator of reverse osmosis seawater desalting separately of opening goes out water solenoid valve, the seawater pipe of proceeding from reverse osmosis seawater desalting generator separately, to the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately, carries out high pressure reverse osmosis seawater desalting; Mechanical vibrator shakes reverse osmosis seawater desalting generator, the compressed air that air compressor extrudes enters air accumulator through check valve, goes out air accumulator compressed air out proceeds from reverse osmosis seawater desalting generator separately concentrated seawater pipe through the electromagnetic gas valve of the generator of reverse osmosis seawater desalting separately of opening to the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately; The probe of seawater velocity sensor, Sea-water pressure sensor and concentration of seawater sensor is housed in the seawater pipe of each reverse osmosis seawater desalting generator; Concentrated seawater in the reverse osmosis membrane core of reverse osmosis seawater desalting generator can by the concentrated seawater of the generator of reverse osmosis seawater desalting separately of opening go out water solenoid valve or separately the concentrated seawater water outlet electric control valve of reverse osmosis seawater desalting generator from the concentrated seawater tube drainage of reverse osmosis seawater desalting generator separately in the sea large; The fresh water in the fresh water district of reverse osmosis seawater desalting generator from the fresh water pipe of reverse osmosis seawater desalting generator separately out, the fresh water outlet magnetic valve through the generator of reverse osmosis seawater desalting separately of opening flows into fresh-water pool; Fresh water pump extracts the fresh water entering water electromagnetic valve of fresh water through the generator of reverse osmosis seawater desalting separately of opening from fresh-water pool, the fresh water pipe of proceeding from reverse osmosis seawater desalting generator is separately to the fresh water district of reverse osmosis seawater desalting generator separately, then through the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately, carry out backwash, fresh water pressure force snesor and fresh water flow sensor are housed in the fresh water pipe of each reverse osmosis seawater desalting generator; The wind of Roots blower blowout is through the electromagnetic air valve of air velocity transducer with the generator of reverse osmosis seawater desalting separately of opening, the fresh water pipe of proceeding from reverse osmosis seawater desalting generator separately, to the fresh water district of the generator of reverse osmosis seawater desalting separately emptying, blows logical to the reverse osmosis membrane core of reverse osmosis seawater desalting generator separately; It is characterized in that:The working procedure of reverse osmosis desalination device is as follows: a) on sandy beach by the sea, dig a bite seawater well (16), it is inner that seawater flows to seawater well (16) through husky filter, then eliminates marine alga toward the inner input of seawater well (16) algae removal medicine, pre-treating seawater pump (15) is extracted seawater inner the seawater well (16) of filtering, remove algae through sand out, seawater pond (14) is delivered to inner after the filtration of screen pack, then ten degrees Celsius of heating of seawaters to two inner to seawater pond (14), b) low pressure seawater pump (11) is extracted seawater inner seawater pond (14) after treatment out, low pressure seawater through several reverse osmosis seawater desalting generators of opening goes out water solenoid valve (10), enter in the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator separately through the ultrafiltration pottery in the seawater pipe (3) of reverse osmosis seawater desalting generator separately, scorching water arrives the fresh water district of reverse osmosis seawater desalting generator through the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator separately, carry out low pressure reverse osmosis desalinization, then fresh water is flowed into fresh-water pool (26) by the fresh water outlet magnetic valve (27) of the reverse osmosis seawater desalting generator separately of opening, c) reverse osmosis seawater desalting generator concentration of seawater near reverse osmosis membrane in running is very high, and the concentration of seawater of the middle position of reverse osmosis membrane core (2) is not high, mechanical vibrator is the seawater of the vibrations of reverse osmosis seawater desalting generator, stirring reverse osmosis membrane core (2) the inside, the compressed air that air compressor (20) extrudes enters air accumulator (18) through check valve (19), the reverse osmosis membrane core (2) of reverse osmosis seawater desalting generator is separately entered through the electromagnetic gas valve (17) of the generator of reverse osmosis seawater desalting separately of opening from the concentrated seawater outlet pipe (4) of reverse osmosis seawater desalting generator separately from compressed air out of air accumulator (18), stir the seawater of the inside, make the low concentration sea water mixing near the high concentration seawater of reverse osmosis membrane and the middle position of reverse osmosis membrane core (2), the lower end that sinks to reverse osmosis membrane core (2) because the ratio of concentrated seawater is great, there are polarization phenomena in the concentration of seawater in reverse osmosis membrane core (2), simultaneously, the information providing according to the Sea-water pressure sensor of seawater pipe (3) the inside of reverse osmosis seawater desalting generator separately, by the time length that regulates the electromagnetic gas valve (17) of reverse osmosis seawater desalting generator separately to open, regulate the seawater pressure of reverse osmosis membrane core (2) the inside of this reverse osmosis seawater desalting generator, conputer controlled instrument regulates the size of the concentrated seawater water outlet electric control valve (22) of reverse osmosis seawater desalting generator separately according to the data that the concentration of seawater sensor of reverse osmosis seawater desalting generator spreads out of separately, concentrated seawater through the concentrated seawater water outlet electric control valve (22) of reverse osmosis seawater desalting generator separately from the concentrated seawater outlet pipe (4) of reverse osmosis seawater desalting generator separately discharged to sea, d) when the flow speed value of measuring when the seawater velocity sensor being equipped with in the seawater pipe (3) of certain reverse osmosis seawater desalting generator is measured pressure values higher than low setting value lower than setting value and Sea-water pressure sensor, the reverse osmosis membrane core (2) that this reverse osmosis seawater desalting generator is described have some stop up,The pressure that causes seawater is too large, and through the fresh water of the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator very little, the low pressure seawater that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve (10), stops the low pressure reverse osmosis desalinization of this reverse osmosis seawater desalting generator, start high-pressure undersea water pump (13) seawater inner seawater pond (14) is after treatment extracted out, the high pressure sea water of opening the reverse osmosis seawater desalting generator of the low pressure reverse osmosis desalinization just have been stopped goes out water solenoid valve (12), high pressure sea water through the seawater pipe (3) of this reverse osmosis seawater desalting generator inner enter this reverse osmosis seawater desalting generator reverse osmosis membrane core (2) in, fresh water reaches the fresh water district of this reverse osmosis seawater desalting generator through the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator, carry out high pressure reverse osmosis seawater desalting, then fresh water is flowed into fresh-water pool (26) by the fresh water outlet magnetic valve (27) of this reverse osmosis seawater desalting generator of opening, e) the seawater pressure measured lower than setting value, Sea-water pressure sensor of the flow speed value measured when the seawater velocity sensor being equipped with in the seawater pipe (3) of reverse osmosis seawater desalting generator that carries out high pressure reverse osmosis seawater desalting is during higher than high setting value, reverse osmosis membrane core (2) Severe blockage of this reverse osmosis seawater desalting generator is described, passes the fresh water of reverse osmosis membrane core (2) very little, the high pressure sea water that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator goes out water solenoid valve (12), fresh water outlet magnetic valve (27) and electromagnetic gas valve (17), terminates the high pressure reverse osmosis seawater desalting of this reverse osmosis seawater desalting device, start fresh water pump (25), open the fresh water entering water electromagnetic valve (24) of this reverse osmosis seawater desalting generator and regulate concentrated seawater water outlet electric control valve (22), fresh water through fresh water entering water electromagnetic valve (24) and the fresh water pipe (23) of this reverse osmosis seawater desalting generator, then pass this reverse osmosis seawater desalting generator reverse osmosis membrane core (2), carry out backwash, carrying out in the reverse osmosis seawater desalting generator of backwash, fresh water through the inner concentrated seawater of this reverse osmosis seawater desalting generator reverse osmosis membrane core (2) compressing reverse osmosis membrane core (2) through the concentrated seawater water outlet electric control valve (22) of this reverse osmosis seawater desalting generator from the concentrated seawater outlet pipe (4) of this reverse osmosis seawater desalting generator discharged to sea, seawater pressure by regulating the concentrated seawater water outlet electric control valve (22) of this reverse osmosis seawater desalting generator to make the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator inner reaches backwashing pressure setting value, both the seawater pressure that the inner Sea-water pressure sensor of the seawater pipe (3) of this reverse osmosis seawater desalting generator had been measured reaches backwashing pressure setting value, f) when the inner fresh water flow sensor of the fresh water pipe (23) of the reverse osmosis seawater desalting generator that carries out backwash detects that flow velocity exceedes setting value, when the seawater pressure that the inner Sea-water pressure sensor of the seawater pipe (3) of this reverse osmosis seawater desalting generator is measured simultaneously remains on backwashing pressure setting value, illustrate that reverse osmosis membrane core (2) Penetration ration of this reverse osmosis seawater desalting generator has reached low setting valueThe fresh water entering water electromagnetic valve (24) that conputer controlled instrument cuts out this reverse osmosis seawater desalting generator and the concentrated seawater water outlet electric control valve (22) that regulates this reverse osmosis seawater desalting generator, the low pressure seawater of making this reverse osmosis seawater desalting generator goes out water solenoid valve (10), re-starts low pressure reverse osmosis desalinization, g) through the reverse osmosis seawater desalting generator of backwash, experience low pressure reverse osmosis desalinization again, high pressure reverse osmosis seawater desalting, the process of backwash again, after circulation for several times, conputer controlled instrument starts Roots blower (29), electromagnetic air valve (28) and the concentrated seawater of opening this reverse osmosis seawater desalting generator go out water solenoid valve (21), the high-pressure blast of Roots blower (29) blowout passes air velocity transducer and the electromagnetic air valve (28) of this reverse osmosis seawater desalting generator, reverse osmosis membrane core (2) is passed from the fresh water district of this reverse osmosis seawater desalting generator, the inner concentrated seawater of the reverse osmosis membrane core (2) of this reverse osmosis seawater desalting generator is through the high-pressure blast of reverse osmosis membrane and exerts pressure, water solenoid valve (21) is gone out and concentrated seawater water outlet electric control valve (22) is discharged into large nautical mile from the concentrated seawater outlet pipe (4) of this reverse osmosis seawater desalting generator through the concentrated seawater of this reverse osmosis seawater desalting generator of opening, after the concentrated seawater that the reverse osmosis membrane core (2) that racks up this reverse osmosis seawater desalting generator is inner, by the time, when the air speed value that the air velocity transducer of this reverse osmosis seawater desalting generator detects exceedes setting value, illustrate that reverse osmosis membrane core (2) Penetration ration of this reverse osmosis seawater desalting generator has reached high setting value, electromagnetic air valve (28) and concentrated seawater that conputer controlled instrument cuts out the reverse osmosis seawater desalting generator blowing through go out water solenoid valve (21), and then this reverse osmosis seawater desalting generator carries out the reverse osmosis seawater desalting of a new round, i) after reverse osmosis desalination device normal functioning, all the time there is a reverse osmosis seawater desalting generator to be in back flush discharge concentrated seawater state and reverse osmosis seawater desalting generator and be in logical, the discharge concentrated seawater state that blows, all the other reverse osmosis seawater desalting generators are in low pressure reverse osmosis desalinization state or high pressure reverse osmosis seawater desalting state, so do not need repeatedly to start and close down fresh water pump (25), Roots blower (29), air compressor (20), low pressure seawater pump (11) and high-pressure undersea water pump (13).
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CN107416947A (en) * 2017-07-21 2017-12-01 张英华 Graphene or CNT hotting mask saline treatment equipment and control method
CN111217426A (en) * 2020-01-18 2020-06-02 张英华 Energy recovery system in seawater desalination and control method thereof

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GB2363741A (en) * 2000-06-20 2002-01-09 Finch Internat Ltd Energy recovery during desalination of seawater
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CN107416947A (en) * 2017-07-21 2017-12-01 张英华 Graphene or CNT hotting mask saline treatment equipment and control method
CN107416947B (en) * 2017-07-21 2020-05-19 张英华 Graphene or carbon nanotube thermal film saline water treatment equipment and control method
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CN111217426B (en) * 2020-01-18 2022-02-08 张英华 Energy recovery system in seawater desalination and control method thereof

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