CN110124523A - It can be used for the reverse osmosis membrane module of step and its step reverse osmosis water separation method - Google Patents
It can be used for the reverse osmosis membrane module of step and its step reverse osmosis water separation method Download PDFInfo
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- CN110124523A CN110124523A CN201910448123.4A CN201910448123A CN110124523A CN 110124523 A CN110124523 A CN 110124523A CN 201910448123 A CN201910448123 A CN 201910448123A CN 110124523 A CN110124523 A CN 110124523A
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- reverse osmosis
- putamina
- concentration
- membrane
- flow
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
- B01D63/065—Tubular membrane modules with membranes on a surface of a support tube on the outer surface thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/02—Elements in series
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
It can be used for the reverse osmosis membrane module of step and its step reverse osmosis water separation method the present invention relates to a kind of.The membrane module is by putamina, the both ends of putamina are set with the end cap for converging and distributing outer loop salting liquid, the intracavitary uniformly distributed several membrane tubes of shell, the original water inlet and concentrated solution outlet radially opened up respectively positioned at the putamina peripheral wall of two end caps, two end caps respectively with original water inlet, putamina inner cavity between concentrated solution outlet is equipped with end plate, end plate is equipped with the hole that multiple uniform arrangements are used to fix membrane tube position and play sealing function, positioned at original water inlet side end cap central along axial direction open up for the injection of dense circulating brine into hole, the composition that portals for the discharge of light circulating brine that end cap central positioned at concentrated solution outlet side is opened up along axial direction.
Description
Technical field
The invention belongs to the membrane separation plants of water treatment field, in particular to a kind of to can be used for the reverse osmosis membrane module of step
And its step reverse osmosis water separation method.
Background technique
Reverse osmosis is a kind of by means of selecting the function through (semi-permeable) property film using pressure as the UF membrane skill of motive force
Art, when pressure added in system is greater than water inlet solution osmotic pressure, hydrone constantly penetrates film, flows by producing water flow passage
Central tube, the then impurity in outflow water at one end, such as ion, organic matter, bacterium, virus, is trapped within the influent side of film,
Then it is flowed out in concentrated water water outlet, to reach isolation of purified purpose.
During concentration, as concentrated water side salinity increases, osmotic pressure increases existing reverse osmosis treatment unit.If
Expect to obtain the concentrated water of higher concentration, must just further increase the pressure into water, to the bearing requirements of pump and pipe-line equipment
Also it greatly improves, and the bearing capacity of reverse osmosis membrane is limited, so that the concentrating degree of final concentrated water is not high, and energy consumption is larger.
CN201710006310.8 discloses a kind of step reverse osmosis water separation method and water separating system, its purpose are
It provides and a kind of aims to solve the problem that permeable pressure head is big, producing water ratio is low, to high-pressure pump between film present in existing reverse osmosis treatment technology
Pressure requirements are high, energy consumption is high, the step reverse osmosis water separation method and water separating system of the high pressure resistant problem of film.The technical solution:
The water separating system of reverse osmosis water separation method of the present invention, the water separating system be n grade reverse osmosis water separation systems, contain according to
N~1 four-way reverse osmosis membrane assembly the unit of secondary connection and a triple channel reverse osmosis membrane assembly unit, at adjacent two
A circulating pump is each equipped between reverse osmosis membrane assembly unit, each four-way reverse osmosis membrane assembly unit includes reverse osmosis
Permeable membrane component and the feed side intake tunnel 10 connecting with reverse osmosis membrane assembly, feed side exhalant canal 20 are intake through side
Channel 30, through side exhalant canal 40 (example has indicated the four-way of first-stage reverse osmosis membrane module unit in Fig. 1, other
Four-way structure of the four-way of rank with level-one reverse osmosis membrane assembly unit), the upper level connects through side exhalant canal
The feed side intake tunnel of next stage is connect, the feed side exhalant canal connection upper level of the next stage leads to through side water inlet
Road.System setting in this way, the circulating pump can realize the solution in two neighboring reverse osmosis membrane assembly unit by Fig. 1 institute
Show arrow direction infiltration flowing, the water separating system is additionally provided with intake pump and low-purity water is pumped into first-stage reverse osmosis membrane module original
Expect side.The disadvantages are as follows: membrane module currently on the market is unable to satisfy the requirement of step reverse osmosis process, main problem
It is that membrane module must produce water and have to that there are two channels there are four channel first；Secondly external that the salting liquid of circulation is provided
It is adequately contacted with having through survey for film.And existing plate membrane bearing capacity is limited, tubular membrane and hollow-fibre membrane are multi-purpose
In micro-filtration and ultrafiltration, though the most wide rolled film of application range is there are two the putamina of water outlet, its unique fresh water runner makes
Outer membrane is difficult to come into full contact with the salting liquid of central tube through side.Therefore step reverse osmosis process is realized, it is necessary to develop
A kind of novel membrane module reverse osmosis suitable for step.
CN201611016142.2 discloses a kind of efficient open network management runner reverse osmosis membrane assembly, its purpose is to mention
Unimpeded for a kind of water inlet flow channel for solving spiral coiled reverse osmosis membrane element, the stifled ability of resistant is strong, and inlet distribution is uniformly high
Imitate open network management runner reverse osmosis membrane assembly.Its technical solution: the reverse osmosis membrane assembly, including putamina, setting are in putamina
Interior center water producing pipe, and around several membrane components of center water producing pipe arrangement, membrane component has open network management runner, putamina
Water-in flange end cap is arranged in water inlet one end, is provided with again on the inside of water-in flange end cap into water spiral-flow type flow guiding disc；Putamina water outlet
Water-output flange end cap is arranged in mouth one end, is provided with water outlet spiral-flow type flow guiding disc on the inside of water-output flange end cap again；Center water producing pipe end
Production water swivel is respectively set in portion；Circumferential card slot is opened up on putamina internal perisporium, and retaining ring piece, retaining ring piece and end are equipped in card slot
Lid offsets；Two groups of membrane components of tandem connection are included at least along water inlet direction, are led between two membrane component of front and back axially concatenated
Cross the connection of water conservancy diversion tube connector.It is reverse osmosis that CN201710264214.3 discloses a kind of open runner network pipe type high pressure of super-pressure
Membrane module, its purpose are to provide that a kind of water inlet flow channel for solving spiral coiled reverse osmosis membrane element is unimpeded, and resistant blocks up ability
By force, the open runner network pipe type high pressure reverse osmosis membrane assembly of the super-pressure that inlet distribution is uniform, high-voltage resistance capability is strong.Its technical side
Case: end is arranged in the reverse osmosis membrane assembly, including putamina, center water producing pipe, center pull rod, single membrane component, putamina both ends
Peripheral pull rod is arranged between two ends fixed disk for fixed disk, and putamina end is fixed in the fixing groove of end fixed disk.It draws at center
Bar is threaded through center water producing pipe inner cavity, and center pull rod both ends are all exposed except putamina, and one end and center of center pull rod produce
Permeate connector is arranged in water pipe sealing, the other end.Single membrane component is arranged between two resistance to stress disk of front and back, in resistance to stress disk
The support chip that the heart is connect with circumference is arc, is radially supported.Existing shortcoming is above-mentioned two pieces patent document jointly:
The purpose of said modules design is antifouling stifled and high pressure resistant (90~160 kilograms of ranks) etc., but high pressure is simultaneously to equipment and pipeline
Requirement it is also just higher, also will increase equipment investment and maintenance cost.
Summary of the invention
The object of the present invention is to provide one kind to aim to solve the problem that existing membrane module channel is few, and the transmission of film is surveyed can not be with circulation
The problem of salting liquid comes into full contact with reduces intake pressure, that improves cocnentration factor can be used for ladder to realize the step concentration of raw water
The reverse osmosis membrane module of grade.It is a further object of the present invention to provide a kind of infiltrations that balance portion raw water is gone using the osmotic pressure for producing water
Pressure thoroughly, so as to reduce the intake pressure of raw water, energy saving and equipment investment can be used for the reverse osmosis membrane module of step.This hair
The salting liquid that bright purpose again is to provide a kind of configuration setting osmotic pressure forms circulation, and the transmission of salting liquid and film in membrane tube
There is sufficient contact in side, so that producing water also has certain osmotic pressure, so as to reduce the pressure of water inlet, improves cocnentration factor, and
Saving energy consumption can be reached, improve the step reverse osmosis water separation method of producing water ratio and enrichment factor purpose.
It can be used for the reverse osmosis membrane module of step described in the technical solution of the invention is as follows, be characterized in that, institute
Stating membrane module, by the both ends of putamina, putamina to be set with end cap, shell for converging and distributing outer loop salting liquid intracavitary
Several membrane tubes of even laying, putamina the peripheral wall original water inlet and concentrated solution outlet, two that radially open up respectively positioned at two end caps
The putamina inner cavity between original water inlet, concentrated solution outlet is equipped with end plate to end cap respectively, the end plate is equipped with multiple uniform arrangements
For fix membrane tube position and play sealing function hole, positioned at original water inlet side end cap central along axial direction open up for dense
Circulating brine injection into hole, positioned at concentrated solution outlet side end cap central along axial direction open up for light circulating brine discharge
Portal composition.
As preferred: support tube that the membrane tube is wrapped in layer by layer from inside to outside, interior filter, film, outer filter composition.
As preferred: the diameter of the membrane tube is between 5mm~10mm；Spacing between membrane tube and membrane tube is 4mm~8mm
Between, wide spacing makes film be not easy to be blocked and pollute, and easy cleaning.
As preferred: the putamina is made by stainless steel material or inner lining material, the diameter of the putamina be 100mm~
Between 200mm, length is between 1300mm~2600mm.
As preferred: material selection stainless steel tube, titanium alloy tube or the macromolecule tubing of the support tube；The support
Pipe radially opens up several perforation along tube wall.
Another technical solution of the invention is the step reverse osmosis water separation method, is characterized in that, packet
Include following steps:
(1) raw water enters membrane module by one end of membrane module, flows through the outside of each membrane tube, and permeate is through interior filter again from wearing
The support tube in hole flow to the center of membrane tube, and concentrate is flowed out from the other end of membrane module；
(2) the salting liquid of configuration setting concentration, forms the circulation of salting liquid using the channel and pump at membrane module both ends, salt is molten
Liquid is mixed by the surface that the hole of central tube diffuses to film with permeate, to increase the concentration of permeate, improves permeate
Osmotic pressure.
As preferred: putamina diameter is 100mm, and length 1300mm, membrane tube diameter is 5mm, using three film original part strings
The form of connection is tested；Raw water is 1.2% sodium chloride solution of concentration, flow 1m3/ h, pressure 2MPa produce water side configuration concentration
1% sodium chloride solution is as circulating brine, flow 1m3/h；Cross the flow 0.5m of concentrate after film3/ h, concentration 2.4%,
Circulating brine flow is 1.5m3/ h, concentration 0.67%.
As preferred: putamina diameter is 200mm, and length 2600mm, membrane tube diameter is 10mm, using four film original part strings
The form of connection is tested；Raw water is 3% metabisulfite solution of concentration, flow 4m3/ h, pressure 2.3MPa；Produce water side configuration concentration
1% sodium chloride solution is as circulating brine, flow 4m3/h；Cross the flow 2m of concentrate after film3/ h, concentration are 6% or so,
Circulating brine flow is 6m3/ h, concentration 0.67%.
As preferred: putamina diameter is 150mm, and length 2000mm, membrane tube diameter is 8mm, using four film original part strings
The form of connection is tested；Water inlet is 1% sodium chloride of concentration and 3% sodium sulphate mixed solution, flow 2m3/ h, pressure 3.3MPa；
The sodium chloride solution for producing water side configuration concentration 2% is circulating brine, flow 2m3/h；Cross the flow 1m of concentrate after film3/ h is dense
Degree is 2% sodium chloride and 6% sodium sulphate mixed solution, and circulating brine flow is 3m3/ h, concentration 1.3%.
Compared with prior art, beneficial effects of the present invention:
(1) membrane module of the invention is reverse osmosis suitable for step, water side can be penetrated in film, by preparing with certain dense
The salting liquid of degree simultaneously forms circulation, so that film also has osmotic pressure through survey, to reduce membrane pressure, saves energy consumption
(2) raw water and the circulating brine of configuration have sufficient contact in the two sides of film, so as to rapidly with the production water of crossing film
Mixing, the osmotic pressure of the raising permeate side of energy fast and stable.
(3) membrane component tool of the invention is there are four channel, and wherein raw water disengaging is there are two channel, also have through water there are two
Channel outflow.Easy cleaning, it is easy to use.
(4) the spacing between membrane tube of the invention is big, and the runner of raw water is just wide, to be not easy to plug, greatly reduces and washes down
Number.
(5) due to the osmotic pressure of partial raw water of the osmotic balance through side, thus under same intake pressure, it is former
It can increase through the production water of film in water, cocnentration factor increases.
(6) membrane tube of the invention is supported by the central tube perforated, and guarantees that membrane tube is able to bear elevated pressures and indeformable,
Central tube has filter in one layer outward, and to provide certain flow pass through water, interior filter outer layer is reverse osmosis membrane, reverse osmosis
There is one layer of outer filter outside film, turbulence state when protecting and raw water being made to flow through film surface is provided for reverse osmosis membrane, reduces film table
Face fouling, pollution and the generation of concentration polarization phenomenon.
(7) in use, raw water enters membrane module by side one end to membrane tube of the invention, then flows through each membrane tube
Outside, permeate flow to the center of membrane tube through interior filter from the support tube of perforation again, and concentrate is flowed out from the other end of component.
In operational process, certain density salting liquid is configured, forms the circulation of salting liquid using the channel and pump at membrane module both ends, salt is molten
Liquid is mixed by the surface that the hole of central tube diffuses to film with permeate, to increase the concentration of permeate, improves permeate
Osmotic pressure, can balance portion raw water osmotic pressure so that raw water concentration needed for pressure reduce.
(8) membrane module of the invention is tubular type membrane structure, and membrane module is rearranged by internal more membrane tubes；It is of the invention into
Water flow passage is the outside of membrane tube inside putamina, though there is filter, runner is mainly determined by the spacing between adjacent membrane tube.
(9) the present invention removes the osmotic pressure of balance portion raw water using the osmotic pressure for producing water, so as to reduce the influent pressure of raw water
Power, energy saving and equipment investment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention can be used for the reverse osmosis membrane module of step；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the structural schematic diagram that the present invention can be used for the single membrane tube of the reverse osmosis membrane module of step；
Fig. 4 is the side view of Fig. 3.
Primary clustering symbol description:
1 original water inlet of putamina, 11 concentrated solution outlet, 12 end cap 2
Portal 22 membrane tube, 3 support tube 31 into hole 21
The outer filter 34 of 32 film of filter 33 in perforation 311
4 hole 41 of end plate
Specific embodiment
The present invention is further detailed in conjunction with the accompanying drawings below:
Refering to Figure 1, described can be used for the reverse osmosis membrane module of step, covered respectively by the both ends of putamina 1, putamina 1
It fills for converging and distributing the intracavitary uniformly distributed several membrane tubes 3 of end cap 2, the shell of outer loop salting liquid, positioned at two end caps 2
Original water inlet 11 and concentrated solution outlet 12 that 1 peripheral wall of putamina radially opens up respectively, two end caps 2 respectively with original water inlet 11, dense
1 inner cavity of putamina between contracting liquid outlet 12 is equipped with multiple uniform arrangements equipped with end plate 4, the end plate 4 and is used to fix 3 position of membrane tube
And it plays the hole 41 of sealing function, infused along what axial direction opened up for dense circulating brine positioned at 2 center of end cap of 11 side of original water inlet
The portalling for the discharge of light circulating brine opened up into hole 21, positioned at 2 center of end cap of 12 side of concentrated solution outlet along axial direction entered
22 compositions.
It please refers to shown in Fig. 3, Fig. 4, support tube 31 that the membrane tube 3 is wrapped in layer by layer from inside to outside, interior filter 32, film
33, outer filter 34 forms.
It please refers to shown in Fig. 2, the diameter of the membrane tube 3 is between 5mm~10mm；Spacing between membrane tube 3 and membrane tube 3 is
Between 4mm~8mm, wide spacing makes film 33 be not easy to be blocked and pollute, and easy cleaning.
In the present embodiment, the putamina 1 is made by stainless steel material or inner lining material, and the diameter of the putamina 1 is 100mm
Between~200mm, length is between 1300mm~2600mm.
It please refers to shown in Fig. 3, material selection stainless steel tube, titanium alloy tube or the macromolecule tubing of the support tube 31；
The support tube 31 radially opens up several perforation 311 along tube wall.
Shown in please referring to Fig.1 to Fig.4, step reverse osmosis water separation method, comprising the following steps:
(1) raw water enters membrane module by one end of membrane module, flows through the outside of each membrane tube 3, permeate through interior filter 32 again from
The support tube 31 of perforation 311 flow to the center of membrane tube 3, and concentrate is flowed out from the other end of membrane module；
(2) the salting liquid of configuration setting concentration, forms the circulation of salting liquid using the channel and pump at membrane module both ends, salt is molten
Liquid is mixed by the surface that the hole of central tube diffuses to film with permeate, to increase the concentration of permeate, improves permeate
Osmotic pressure.
Embodiment 1:
1 diameter of putamina is 100mm, and length 1300mm, 3 diameter of membrane tube is 5mm, using three concatenated forms of film original part
It is tested.Raw water is 1.2% sodium chloride solution of concentration, flow 1m3/ h, pressure 2MPa produce the chlorination of water side configuration concentration 1%
Sodium solution is as circulating brine (dense), flow 1m3/h。
Cross the flow 0.5m of concentrate after film3/ h, concentration are 2.4% or so, and circulating brine (light) flow is 1.5m3/ h is dense
Degree is 0.67% or so.
Embodiment 2:
1 diameter of putamina is 200mm, and length 2600mm, 3 diameter of membrane tube is 10mm, using four concatenated shapes of film original part
Formula is tested.Raw water is 3% metabisulfite solution of concentration, flow 4m3/ h, pressure 2.3MPa.Produce the chlorine of water side configuration concentration 1%
Change sodium solution as circulating brine (dense), flow 4m3/h。
Cross the flow 2m of concentrate after film3/ h, concentration are 6% or so, and circulating brine (light) flow is 6m3/ h, concentration are
0.67% or so.
Embodiment 3:
1 diameter of putamina is 150mm, and length 2000mm, 3 diameter of membrane tube is 8mm, using four concatenated forms of film original part
It is tested.Water inlet is 1% sodium chloride of concentration and 3% sodium sulphate mixed solution, flow 2m3/ h, pressure 3.3MPa.Is produced from water side to match
The sodium chloride solution for setting concentration 2% is circulating brine (dense), flow 2m3/h。
Cross the flow 1m of concentrate after film3/ h, concentration are 2% sodium chloride and 6% sodium sulphate mixed solution, circulating brine
(light) flow is 3m3/ h, concentration are 1.3% or so.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the invention as claimed with
Modification, should all belong to the covering scope of the claims in the present invention.
Claims (9)
1. a kind of can be used for the reverse osmosis membrane module of step, which is characterized in that the membrane module is distinguished by the both ends of putamina, putamina
It is set with for converging and distributing the intracavitary uniformly distributed several membrane tubes of end cap, the shell of outer loop salting liquid, positioned at two end caps
Original water inlet and concentrated solution outlet that putamina peripheral wall radially opens up respectively, two end caps respectively with original water inlet, concentrated solution outlet
Between putamina inner cavity equipped with end plate, the end plate be equipped with it is multiple it is uniform arrangement be used to fix membrane tube position and play sealing function
Hole, positioned at original water inlet side end cap central along axial direction open up for dense circulating brine injection into hole, be located at concentrate
Export the composition that portals for the discharge of light circulating brine that the end cap central of side is opened up along axial direction.
2. can be used for the reverse osmosis membrane module of step according to claim 1, which is characterized in that membrane tube layer from inside to outside
Layer be wrapped in support tube, interior filter, film, outer filter composition.
3. can be used for the reverse osmosis membrane module of step according to claim 2, which is characterized in that the diameter of the membrane tube is
Between 5mm~10mm；For spacing between membrane tube and membrane tube between 4mm~8mm, it is blocked and dirty that wide spacing is not easy film
Dye, and easy cleaning.
4. can be used for the reverse osmosis membrane module of step according to claim 2, which is characterized in that the putamina is by stainless steel
Material or inner lining material production, the diameter of the putamina is between 100mm~200mm, and length is between 1300mm~2600mm.
5. can be used for the reverse osmosis membrane module of step according to claim 1, which is characterized in that the material of the support tube selects
With stainless steel tube, titanium alloy tube or macromolecule tubing；The support tube radially opens up several perforation along tube wall.
6. a kind of step reverse osmosis water separation method, which comprises the following steps:
(1) raw water enters membrane module by one end of membrane module, flows through the outside of each membrane tube, permeate is through interior filter again from perforation
Support tube flow to the center of membrane tube, and concentrate is flowed out from the other end of membrane module；
(2) the salting liquid of configuration setting concentration, forms the circulation of salting liquid using the channel and pump at membrane module both ends, salting liquid by
The surface that the hole of central tube diffuses to film is mixed with permeate, to increase the concentration of permeate, improves the infiltration of permeate
Pressure thoroughly.
7. step reverse osmosis water separation method according to claim 6, which is characterized in that putamina diameter is 100mm, and length is
1300mm, membrane tube diameter are 5mm, are tested using three concatenated forms of film original part；Raw water is that 1.2% sodium chloride of concentration is molten
Liquid, flow 1m3/ h, pressure 2MPa produce the sodium chloride solution of water side configuration concentration 1% as circulating brine, flow 1m3/h；It crosses
The flow 0.5m of concentrate after film3/ h, concentration 2.4%, circulating brine flow are 1.5m3/ h, concentration 0.67%.
8. step reverse osmosis water separation method according to claim 6, which is characterized in that putamina diameter is 200mm, and length is
2600mm, membrane tube diameter are 10mm, are tested using four concatenated forms of film original part；Raw water is that 3% sodium sulphate of concentration is molten
Liquid, flow 4m3/ h, pressure 2.3MPa；The sodium chloride solution of water side configuration concentration 1% is produced as circulating brine, flow 4m3/h；
Cross the flow 2m of concentrate after film3/ h, concentration are 6% or so, and circulating brine flow is 6m3/ h, concentration 0.67%.
9. step reverse osmosis water separation method according to claim 6, which is characterized in that putamina diameter is 150mm, and length is
2000mm, membrane tube diameter are 8mm, are tested using four concatenated forms of film original part；Water inlet be 1% sodium chloride of concentration and
3% sodium sulphate mixed solution, flow 2m3/ h, pressure 3.3MPa；The sodium chloride solution for producing water side configuration concentration 2% is cyclic salt
Water, flow 2m3/h；Cross the flow 1m of concentrate after film3/ h, concentration are 2% sodium chloride and 6% sodium sulphate mixed solution, circulation
Brine flow is 3m3/ h, concentration 1.3%.
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| CN201910448123.4A CN110124523A (en) | 2019-05-27 | 2019-05-27 | It can be used for the reverse osmosis membrane module of step and its step reverse osmosis water separation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111992044A (en) * | 2020-09-11 | 2020-11-27 | 江苏坤奕环境工程有限公司 | Energy-saving ultrahigh-power concentration membrane module, membrane bag thereof, water treatment system and method |
| CN114272758A (en) * | 2022-01-27 | 2022-04-05 | 南京新核复合材料有限公司 | Carbon fiber combined permeable membrane |
| CN114887488A (en) * | 2022-06-14 | 2022-08-12 | 深圳市树立水处理设备有限公司 | Tubular polymer membrane separation device and membrane separation method thereof |
| CN116621250A (en) * | 2023-07-18 | 2023-08-22 | 成都威克瑞节能技术有限公司 | High-efficiency energy-saving intelligent circulating water system based on full-flow optimization |
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