CN207192942U - A kind of light strong brine processing units of Re Fahai - Google Patents

A kind of light strong brine processing units of Re Fahai Download PDF

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Publication number
CN207192942U
CN207192942U CN201720620424.7U CN201720620424U CN207192942U CN 207192942 U CN207192942 U CN 207192942U CN 201720620424 U CN201720620424 U CN 201720620424U CN 207192942 U CN207192942 U CN 207192942U
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China
Prior art keywords
group device
strong brine
reverse osmosis
fahai
membrane
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Expired - Fee Related
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CN201720620424.7U
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Chinese (zh)
Inventor
谷维梁
张松建
王子健
于金旗
王为民
程方琳
刘宇坚
胡永健
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BEIJING SCINO MEMBRANCE TECHNOLOGY Co Ltd
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BEIJING SCINO MEMBRANCE TECHNOLOGY Co Ltd
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Priority to CN201720620424.7U priority Critical patent/CN207192942U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Abstract

A kind of light strong brine processing units of Re Fahai are the utility model is related to, belong to water-treatment technology field, including strong brine pretreatment unit and reverse osmosis membrane group device, strong brine pretreatment unit is connected with reverse osmosis membrane group device by pipeline;Strong brine pretreatment unit includes cooling tower intake pump, cooling tower, more medium filter elevator pump, more medium filter, filtered water tank, ultrafiltration booster pump, coarse filter and tubular ultra-filtration membrane group device;Reverse osmosis membrane group device includes UF water tanks, cartridge filter, reverse osmosis high-pressure pump, counter-infiltration film group device, desalination water tank and RO strong brine casees.The devices such as cooling tower, more medium filter, ultrafiltration film group device and counter-infiltration film group device are organically combined by the utility model, processing and comprehensive utilization technique available for hot method sea water desalinization strong brine, the pollution of RO films can be reduced, extend RO film service lifes, the discharge of pollutant is reduced simultaneously, even up to zero-emission, system production water reach industry water reuse standard, can direct reuse.

Description

A kind of light strong brine processing units of Re Fahai
Technical field
A kind of water treatment facilities, more particularly to a kind of light strong brine processing units of Re Fahai are the utility model is related to, is belonged to Water-treatment technology field.
Background technology
The total amount of fresh water is certain on the earth, as water resource utilizes and more and more violent, the water resource of unreasonable waste Shortage problem is increasingly apparent.Desalinization is one of effective technology for realizing freshwater resources " increment of increasing income ", and it can be by largely Seawater resources are transformed into can for human consumption and freshwater resources of production and application.
At present, the desalination technology used in industrial production is broadly divided into two kinds, and one kind is hot method desalination technology, i.e., Temperature conditionss are controlled using heating technique, dissolubility salt and solid impurity etc. in seawater is remained in solid phase, water vapor enters gas Phase, then water vapour is obtained pure fresh water after condensing, including multiple-effect evaporation (Multi-effect Distillation, MED), multistage flash evaporation (Multi-stage Flash, MSF) and distillation (Vaporcom-pression, VC) etc. of calming the anger;It is another It is Membrane seawater desalination technology, i.e., forces to force the fresh water in seawater to enter opposite side through film surface using pressure, strong brine is cut Stay in former side, so as to the water after being desalinated, mainly including reverse osmosis seawater desalting (Seawater Reverse Osmosis, ) and electroosmose process (Electrodialysis, ED) SWRO.
Desalinization is increasingly becoming the best approach for solving shortage of fresh water, but, existing desalinization organic efficiency Low, hot method seawater desalination recovery rate is generally 15%~50%, and the Membrane seawater desalination rate of recovery is generally 30%~40%, produces Most of strong brine be directly discharged to sea.Sea water desalinization strong brine salt content is high, more containing total dissolved solid, and also contains There are the chemical agents such as the preservative added in production process, antisludging agent, heat is also carried in especially hot method strong brine, if its Just directly discharge, then environment can be affected without rational processing.Sea water desalinization strong brine is discharged into without processing Surrounding waters, seawater salinity may be caused to raise, when salinity exceedes certain limit, the mesohaline rise of seawater may cause ocean In some biological cells for not having osmotic adjustment mechanism be dehydrated, cell plasmolysis, so as to trigger metabolism disorder and dead. The seawater of too high salinity can also suppress the photosynthesis of phytoplankton, cause the reduction of zooplankton biomass, species number to subtract Few and diversity indices reduction, the mortality and stability of community for triggering the zoobenthos young reduce, cause fish death, Species number and population density reduce and suppressed the photosynthesis of water plant, respiration etc..Hot method sea water desalinization strong brine Thermal pollution may make local marine site the elevated phenomenon of water temperature occur, cause oxygen in water to reduce, and form anaerobic condition, anoxic Aquatic animal and Plant death can seriously be made, have a strong impact on the water environment and Ecology balance of locality.In addition, water temperature rise may Good living environment is provided to some contagious pathogenic microorganisms, makes its amount reproduction, triggers epidemic disease, is threatened aquatic Biology and the health of the mankind.
Therefore it provides one kind makes hot method sea water desalinization strong brine repeat to recycle and reduce hot method sea water desalinization strong brine row High-volume and protection surrounding environment the ecological balance the light strong brines of Re Fahai processing unit just turn into the technical field be badly in need of solution Technical barrier certainly.
Utility model content
The purpose of this utility model, which is to provide one kind, makes hot method sea water desalinization strong brine repeat to recycle and reduce Re Fahai Water desalinates strong brine discharge capacity and protects the processing unit of the light strong brines of Re Fahai of the ecological balance of surrounding environment.
Above-mentioned purpose of the present utility model reaches by the following technical programs:
A kind of light strong brine processing units of Re Fahai, it is characterised in that:Including strong brine pretreatment unit and reverse osmosis membrane Group device, the strong brine pretreatment unit are connected with reverse osmosis membrane group device by pipeline;The strong brine pretreatment dress Put including cooling tower intake pump, cooling tower, more medium filter elevator pump, more medium filter, filtered water tank, ultrafiltration booster pump, Coarse filter and tubular ultra-filtration membrane group device;Reverse osmosis membrane group device includes UF water tanks, cartridge filter, reverse osmosis high-pressure pump, anti- Permeate film group device, desalination water tank and RO strong brine casees;Cooling tower intake pump is connected by pipeline with the top of cooling tower, cooling The bottom of tower by more medium filter elevator pump and pipeline with being connected at the top of more medium filter, more medium filter Bottom is connected with filtered water tank, and the bottom of filtered water tank is connected by ultrafiltration booster pump and pipeline with coarse filter, coarse filter It is connected with the bottom of tubular ultra-filtration membrane group device, tubular ultra-filtration membrane group device is connected with UF water tanks, UF water tanks and cartridge filter It is connected, cartridge filter is connected by reverse osmosis high-pressure pump and pipeline with counter-infiltration film group device, counter-infiltration film group device and RO Strong brine case is connected, and counter-infiltration film group device is connected with desalination water tank.
A kind of optimal technical scheme, it is characterised in that:The counter-infiltration film group device includes the first reverse osmosis membrane, the second reverse osmosis Permeable membrane and the 3rd reverse osmosis membrane, are sequentially connected in series.
A kind of optimal technical scheme, it is characterised in that:First reverse osmosis of the reverse osmosis high-pressure pump and counter-infiltration film group device The inlet end of permeable membrane is connected.
A kind of optimal technical scheme, it is characterised in that:The condensed water of first reverse osmosis membrane of the counter-infiltration film group device goes out Mouth end is connected with RO strong brine casees, and the production mouth of a river end of the first reverse osmosis membrane, the second reverse osmosis membrane and the 3rd reverse osmosis membrane is with taking off Brine tank is connected.
A kind of optimal technical scheme, it is characterised in that:The cooling tower design output water temperature is less than 40 DEG C, enters tower hydraulic pressure 0.02MPa。
A kind of optimal technical scheme, it is characterised in that:The more medium filter carries flocculant chemicals dosing plant, using stone Sand and anthracite filler, design production aqueous suspension are less than 5mg/L.
A kind of optimal technical scheme, it is characterised in that:The tubular ultra-filtration membrane group device is furnished with on-line cleaning device.
A kind of optimal technical scheme, it is characterised in that:The film wire internal diameter of the tubular ultra-filtration membrane group device is 0.7mm, external diameter 1.3mm, 0.1 μm of average membrane pore size.
A kind of optimal technical scheme, it is characterised in that:The PP that installation number Zhi Jingdu is 5 μm in the cartridge filter is meltblown Filter core.
A kind of optimal technical scheme, it is characterised in that:The ultrafiltration film group device uses large scale hyperfiltration membrane assembly, specification chi Very little (Φ × H) is 225 × 2360mm of Φ, and membrane material PVDF, membrane aperture is 0.1 micron, and the method for operation is dead-end filtration.
A kind of optimal technical scheme, it is characterised in that:The counter-infiltration film group device uses diaphragm type compound for polyamide Film, 12~15LMH of membrane flux is designed, pressure is 60~65bar, single membrane area 400ft before designing film2
A kind of optimal technical scheme, it is characterised in that:The counter-infiltration film group device is equipped with regularly flushing, purging system With medicine system (including antisludging agent, reducing agent, bactericide).
The utility model has the advantages that:
The utility model improves the pretreatment unit of Membrane seawater desalination technique, ensure that the use of follow-up reverse osmosis membrane Life-span, and the road of an economically feasible is provided for the processing of hot method sea water desalinization strong brine, make dense caused by hot method desalinization Salt solution is utilized effectively, and package unit producing water water quality can reach industrial reuse water water standard, and salt rejection rate is more than 97%.
The light strong brine processing units of Re Fahai that the utility model is related to, strong brine pretreatment unit is using cooling tower-more Media filtration-ultrafiltration group technology, the cooling used for cooling tower in hot method sea water desalinization strong brine, temperature can be reduced to 35 DEG C with Under, meet requirement of the follow-up film unit to inflow temperature, more medium filter can remove the dirt that largely suspended in hot method strong brine Thing is contaminated, strong brine concentration of suspension is controlled to the requirement in below 5mg/L, meeting subsequent ultrafiltration unit to entering aqueous suspension, surpassed Filter can remove almost all of suspension, colloid and part larger molecular organicses in strong brine, disclosure satisfy that this strand of strong brine Follow-up reverse osmosis units inflow requirement, RO can remove most salts and COD;SWRO salt rejection rates are more than 97%, and the rate of recovery is big In 40%, production water can direct reuse in industrial production.The dense salt of high concentration caused by the new light strong brine processing technologies of Re Fahai Water can enter salt solution evaporation tank after decalcification, magnesium, so as to realize zero-emission.
The utility model is according to the characteristic of strong brine, by cooling tower, more medium filter, ultrafiltration film group device and reverse osmosis membrane The techniques such as group device are organically combined, and processing and comprehensive utilization technique available for hot method sea water desalinization strong brine, can reduce The pollution of RO films, extend RO film service lifes, while reduce the discharge of pollutant, even up to zero-emission, system production water reaches Industry water reuse standard, can direct reuse.
The utility model is described further below by the drawings and specific embodiments, but not implied that to this reality With the limitation of novel protected scope.
Brief description of the drawings
Fig. 1 is the structural representation of the light strong brine processing units of the utility model Re Fahai.
Fig. 2 is the process flow diagram of the light strong brine processing units of the utility model Re Fahai.
Description of reference numerals:
The cooling tower of 1 cooling tower intake pump 2
The more medium filter of 3 more medium filter elevator pump 4
The ultrafiltration booster pump of 5 filtered water tank 6
The tubular ultra-filtration membrane group device of 7 coarse filter 8
The cartridge filter of 9UF water tanks 10
The counter-infiltration film group device of 11 reverse osmosis high-pressure pump 12
13 desalination water tank 14RO strong brine casees
Embodiment
Embodiment 1
As shown in figure 1, be the structural representation of the light strong brine processing units of the utility model Re Fahai, wherein, 1 is cooling Tower intake pump, 2 be cooling tower, and 3 be more medium filter elevator pump, and 4 be more medium filter, and 5 be filtered water tank, and 6 be that ultrafiltration increases Press pump, 7 be coarse filter, and 8 be tubular ultra-filtration membrane group device, and 9 be UF water tanks, and 10 be cartridge filter, and 11 be reverse osmosis high-pressure pump, 12 be counter-infiltration film group device, and 13 be desalination water tank, and 14 be RO strong brine casees;The light strong brine processing dresses of Re Fahai of the present utility model Put and lead to including strong brine pretreatment unit and reverse osmosis membrane group device, strong brine pretreatment unit and reverse osmosis membrane the group device Piping is connected;Strong brine pretreatment unit includes cooling tower intake pump 1, cooling tower 2, and more medium filter elevator pump 3 is more Medium filter 4, filtered water tank 5, ultrafiltration booster pump 6, coarse filter 7 and tubular ultra-filtration membrane group device 8;Reverse osmosis membrane group device includes UF water tanks 9, cartridge filter 10, reverse osmosis high-pressure pump 11, counter-infiltration film group device 12, desalination water tank 13 and RO strong brines case 14; Cooling tower intake pump 1 is connected by pipeline with the top of cooling tower 2, and the bottom of cooling tower 2 is lifted by more medium filter Pump 3 and pipeline are connected with the top of more medium filter 4, and the bottom of more medium filter 4 is connected with filtered water tank 5, clear water The bottom of case 5 is connected by ultrafiltration booster pump 6 and pipeline with coarse filter 7, coarse filter 7 and tubular ultra-filtration membrane group device 8 Bottom is connected, and tubular ultra-filtration membrane group device 8 is connected with UF water tanks 9, and UF water tanks 9 are connected with cartridge filter 10, ensure public security By reverse osmosis high-pressure pump 11 and pipeline, (counter-infiltration film group device 12 includes first to filter 10 from top to bottom with counter-infiltration film group device 12 Reverse osmosis membrane, the second reverse osmosis membrane and the 3rd reverse osmosis membrane, are sequentially connected in series) the inlet end of the first reverse osmosis membrane be connected Connect, the concentration water outlet end of the 3rd reverse osmosis membrane of counter-infiltration film group device 12 is connected with RO strong brines case 14, the first counter-infiltration The production mouth of a river end of film, the second reverse osmosis membrane and the 3rd reverse osmosis membrane is connected with desalination water tank 13.Cooling tower 2 designs output water temperature Less than 40 DEG C, enter tower hydraulic pressure 0.02MPa;More medium filter 4 carries flocculant chemicals dosing plant, is filled out using quartz sand and anthracite Material, design production aqueous suspension are less than 5mg/L;The use large scale hyperfiltration membrane assembly of tubular ultra-filtration membrane group device 8, specification (Φ × H) it is 225 × 2360mm of Φ, membrane material PVDF, membrane aperture is 0.1 micron, and the method for operation is dead-end filtration;Embrane method seawater is light Change reverse osmosis units (the first reverse osmosis membrane i.e. in counter-infiltration film group device 12, the second reverse osmosis membrane and the 3rd reverse osmosis membrane) to use Diaphragm type is polyamide composite film, designs 12~15LMH of membrane flux, and it is 60~65bar to be pressed before design film, single membrane area 400ft2
As shown in Fig. 2 be the process flow diagram of the light strong brine processing units of the utility model Re Fahai, including strong brine Pretreatment unit, reverse osmosis membrane group device, desalted water and high concentration strong brine;
It comprises the following steps:
(1) cooling tower cooling is handled
Strong brine caused by hot method desalinization has the characteristics of temperature is high, in order to meet follow-up embrane method desalination process To the demand of inflow temperature, so as to avoid high temperature from damaging membrane component structure, service life, the light strong brines of Re Fahai are influenceed First pass around cooling tower 2 and carry out cooling processing, design leaving water temperature is 35 DEG C.
(2) multi-medium filtering-ultrafiltration pretreatment
A. more medium filter 4 is lifted into by multi-medium filtering elevator pump 3 by the strong brine of cooling tower 2, used More medium filter 4 removes most suspended substances and particulate matter in water inlet, and more medium filter 4 uses quartz sand and anthracite Filler, its filtering velocity 7.1m/h is controlled in operation, production aqueous suspension concentration is less than 5mg/L, and production water is kept in filtered water tank 5, multimedium Filter 4 is with flocculation chemicals dosing plant, in case being used when influent turbidity changes greatly.
B. the strong brine in filtered water tank 5 is lifted by ultrafiltration booster pump 6 enters tubular ultra-filtration membrane group device 8 through coarse filter 7, It is substantially de- that this process can produce more medium filter 4 suspension remaining in water, particle, larger molecular organicses, bacterium, algae etc. Remove, it is produced water SDI15≤ 3, so as to ensure the stable operation of follow-up reverse osmosis unit, the film wire internal diameter of tubular ultra-filtration membrane group device 8 For 0.7mm, external diameter 1.3mm, 0.1 μm of average membrane pore size, using the method for operation of dead-end filtration, ultrafiltration production water is temporary in UF water tanks 9 Deposit.
C. tubular ultra-filtration membrane group device 8 is furnished with on-line cleaning device, and cleaning frequency is weekly, and cleaning way is to film group Part injects 900mg/L liquor natrii hypochloritis, servicing down times about 1h.
(3) reverse osmosis membrane group device desalting processing
The strong brine of a.UF water tanks 9 sequentially enters cartridge filter 10, reverse osmosis high-pressure pump 11 and counter-infiltration film group device 12;
B. the PP melt-blown filters that installation number Zhi Jingdu is 5 μm in cartridge filter 10;
C. the supercharging of reverse osmosis high-pressure intake pump is passed through in the water outlet of cartridge filter 10, and into counter-infiltration film group device 12, film leads to Measure 12~15L/m2.h, 60~65bar of intake pressure, the rate of recovery are more than 40%, and salt rejection rate is not less than 97%, and production water can directly be made For industrial water reuse, reduce the amount of the light strong brines of Re Fahai, Re Fahai light strong brines in part is recycled utilization;
D. counter-infiltration film group device 12 equipped with regularly rinse, purging system and medicine system (including antisludging agent, reduction Agent, bactericide).
The light strong brine processing units of Re Fahai of the present utility model, in strong brine preprocessing process, cooled down by entering Tower 2, the light strong brine temperature of Re Fahai is reduced to less than 40 DEG C, by the dosing coagulation of more medium filter 4 and filtering, removed Most suspended substances and particulate matter in water inlet, then the membrane separating process through tubular ultra-filtration membrane group device 8 produce more medium filter 4 Remaining suspension, particle, larger molecular organicses, bacterium and algae etc. remove substantially in water, most afterwards through reverse osmosis membrane group device 12 Desalination is carried out, salt rejection rate is more than 97%, and the rate of recovery 40%, production water chlorine ion concentration is less than 250mg/L, and TDS is less than 500mg/L, Production water can be directly used for industrial Water circulation, be effectively reduced the discharge capacity of the light strong brines of Re Fahai, pretreatment unit can be effective Overcome the scale effect to RO films such as bacterial micro-organism and organic matter, improve the service life of RO films.
The utility model is according to the characteristic of water, by water process such as cooling tower, multi-medium filtering, ultrafiltration and reverse osmosis membrane separations Device organic assembling, integrated water processing device, the processing of the light strong brines of Re Fahai is mainly used in, makes the light strong brine portions of Re Fahai Divide and recycle, reach strong brine discharge capacity minimum, system salt rejection rate is more than 97%, the rate of recovery 40%, it is dense to produce water chlorion Degree is less than 250mg/L, and TDS is less than 500mg/L, and production water can be directly used for industrial Water circulation.Subsequently it is coupled with salt producing craft, can Realize the zero-emission of hot method sea water desalinization strong brine.

Claims (10)

  1. A kind of 1. light strong brine processing units of Re Fahai, it is characterised in that:Including strong brine pretreatment unit and reverse osmosis membrane group Device, the strong brine pretreatment unit and reverse osmosis membrane group device are connected by pipeline;The strong brine pretreatment unit Including cooling tower intake pump, cooling tower, more medium filter elevator pump, more medium filter, filtered water tank, ultrafiltration booster pump, slightly Filter and tubular ultra-filtration membrane group device;Reverse osmosis membrane group device includes UF water tanks, cartridge filter, reverse osmosis high-pressure pump, reverse osmosis Saturating film group device, desalination water tank and RO strong brine casees;Cooling tower intake pump is connected by pipeline with the top of cooling tower, cooling tower Bottom by more medium filter elevator pump and pipeline with being connected at the top of more medium filter, the bottom of more medium filter Portion is connected with filtered water tank, and the bottom of filtered water tank is connected by ultrafiltration booster pump and pipeline with coarse filter, coarse filter with The bottom of tubular ultra-filtration membrane group device is connected, and tubular ultra-filtration membrane group device is connected with UF water tanks, UF water tanks and cartridge filter phase Connection, cartridge filter are connected by reverse osmosis high-pressure pump and pipeline with counter-infiltration film group device, and counter-infiltration film group device and RO are dense Brine tank is connected, and counter-infiltration film group device is connected with desalination water tank.
  2. 2. the light strong brine processing units of Re Fahai as claimed in claim 1, it is characterised in that:The counter-infiltration film group device includes First reverse osmosis membrane, the second reverse osmosis membrane and the 3rd reverse osmosis membrane, are sequentially connected in series.
  3. 3. the light strong brine processing units of Re Fahai as claimed in claim 2, it is characterised in that:The reverse osmosis high-pressure pump with it is anti- The inlet end for permeating the first reverse osmosis membrane of film group device is connected.
  4. 4. the light strong brine processing units of Re Fahai as claimed in claim 3, it is characterised in that:The of the counter-infiltration film group device The concentration water outlet end of three reverse osmosis membranes is connected with RO strong brine casees, and the first reverse osmosis membrane, the second reverse osmosis membrane and the 3rd are anti- The production mouth of a river end of permeable membrane is connected with desalination water tank.
  5. 5. the light strong brine processing units of Re Fahai as claimed in claim 4, it is characterised in that:The cooling tower designs water outlet water Temperature is less than 40 DEG C, enters tower hydraulic pressure 0.02MPa.
  6. 6. the light strong brine processing units of Re Fahai as claimed in claim 5, it is characterised in that:The more medium filter carries Flocculant chemicals dosing plant, using quartz sand and anthracite filler, design production aqueous suspension is less than 5mg/L.
  7. 7. the light strong brine processing units of Re Fahai as claimed in claim 6, it is characterised in that:The tubular ultra-filtration membrane group device is matched somebody with somebody There is on-line cleaning device.
  8. 8. the light strong brine processing units of Re Fahai as claimed in claim 7, it is characterised in that:The tubular ultra-filtration membrane group device Film wire internal diameter is 0.7mm, external diameter 1.3mm, 0.1 μm of average membrane pore size.
  9. 9. the light strong brine processing units of Re Fahai as claimed in claim 8, it is characterised in that:Installed in the cartridge filter The PP melt-blown filters that number Zhi Jingdu is 5 μm.
  10. 10. the light strong brine processing units of Re Fahai as claimed in claim 9, it is characterised in that:The ultrafiltration film group device specification Size is 225 × 2360mm of Φ, and membrane material PVDF, membrane aperture is 0.1 micron, and the method for operation is dead-end filtration;The reverse osmosis Saturating film group device uses diaphragm type as polyamide composite film, designs 12~15LMH of membrane flux, and pressure is 60~65bar before designing film, Single membrane area 400ft2;The counter-infiltration film group device is equipped with regularly flushing, purging system and medicine system.
CN201720620424.7U 2017-05-31 2017-05-31 A kind of light strong brine processing units of Re Fahai Expired - Fee Related CN207192942U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109650592A (en) * 2019-01-11 2019-04-19 武汉理工大学 A kind of marine desalination equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109650592A (en) * 2019-01-11 2019-04-19 武汉理工大学 A kind of marine desalination equipment

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