CN106914137B - A kind of film concentration systems and method - Google Patents
A kind of film concentration systems and method Download PDFInfo
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- CN106914137B CN106914137B CN201510984743.1A CN201510984743A CN106914137B CN 106914137 B CN106914137 B CN 106914137B CN 201510984743 A CN201510984743 A CN 201510984743A CN 106914137 B CN106914137 B CN 106914137B
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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
- B01D61/58—Multistep processes
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
- B01D65/104—Detection of leaks in membrane apparatus or modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/24—Quality control
- B01D2311/246—Concentration control
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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
Abstract
The present invention relates to a kind of film concentration systems, including N number of concentration membrane module, each concentration membrane module is configured to the liquid that concentration is supplied to the concentration membrane module, the solution to be concentrated for being supplied to the film concentration systems generates the final concentrate with expected concentration after via M grades of concentration operations, wherein, every level-one in the M grades of concentration operation is executed by one or more concentration membrane modules in N number of concentration membrane module, and, from the first order to M grades, the total effective concentration film surface product for the concentration membrane module for wherein executing i-stage concentration operation is at least set to be less than the total effective concentration film surface product for the concentration membrane module for executing (i-1)-th grade of concentration operation；2 < i≤M.The invention further relates to utilize above-mentioned film concentration systems to carry out the method for multistage concentration and for the control assembly of above system.
Description
Technical field
The present invention relates to technical field of membrane, in particular to one kind includes multiple concentration membrane modules, can treat concentrate solution
The film concentration systems and method for concentration for carrying out multistage concentration are more particularly to a kind of algae solution film concentration systems and method.
Background technique
Filter membrane be it is a kind of efficiently, energy conservation, filtering (or concentration) simple material of process, be widely used in food, biology,
In chemical industry and the feed liquid concentration technology of medicine and other fields.Bacterium, microorganism in stoste, colloid, larger molecular organics etc. can be with
It is rejected by, reaches and separate the permeable liquid compared with small particle with the organic molecule of greater particle size, colloid, bacterium or microorganism
Purpose, realize separating-purifying or concentration.Filtration membrane systems are few due to consuming energy, in terms of concentration with wide before
Scape.
Currently, carrying out feed liquid concentration or filtering to purify to have the following problems using membranous system:
(1) the film concentration technology in industry is difficult to realize serialization, therefore when coupling with the work flow of other streamlineds
There are certain difficulties.
(2) on the one hand, when the concentration material volume of needs is less, because the dead processing area of system (or be referred to as handle
Capacity) it is larger and be difficult to obtain higher cycles of concentration；On the other hand, it because the area of film is larger, causes to retain and remain on film
Substance it is more, be reduced the yield of substance dry weight in concentrate.Therefore, when carrying out concentration to a small amount of feed liquid,
Also need specially to purchase the membranous system of respective handling amount.Existing system does not adapt to treating capacity variation concentration demand.
(3) conventional film separation system is that (so-called specification generally comprises membrane area or fenestra to multiple same size membrane modules
The parameters such as gap) it is in parallel, when concentration, all membrane modules carried out thickening filtration simultaneously, dense as the number of feed liquid concentration cycles increases
Spend it is higher and higher, concentrate had in each membrane module part residual be difficult to be discharged, cause the loss of substance in concentrate,
Reduce the substance yield.For another angle, if the substance residual of large area is accumulated in membrane module, also to membrane module
It rinses, regeneration (recovery) brings higher cost.For example, in actual production, if initial feed liquid is 20 unit volumes, warp
After crossing the membrane module progress thickening certain time interval T of 10 per membrane areas, feed liquid is concentrated into 4 unit volumes, at this time
Feed liquid has reached certain high concentration, and it is well known that high concentration is very easy to the case where causing blocking film surface；If at this time
Still film concentration is continued to the feed liquid of high concentration with the membrane area of former 10 units, it will cause a large amount of solid particles
It is trapped and is widely layered on the membrane module of 10 unit areas, such case reduces object to be concentrated to a great extent
Yield.For object to be concentrated very high for preparation cost, it will cause biggish waste.
In addition, present film concentration systems function is relatively simple, it cannot realize that membrane module series connection is continuous on same system
The arbitrary switch of concentration and the variation filtering of membrane module parallel processing amount.
Summary of the invention
Present invention aim to address one or more of above problems.
For this purpose, first invention according to the present invention, provides a kind of film concentration systems, including N number of concentration membrane module, each
Concentration membrane module is configured to concentration and is supplied to the liquid of the concentration membrane module, be supplied to the film concentration systems to
Concentrate solution generates the final concentrate with expected concentration after via M grades of concentration operations, wherein the M grades of concentration operation
In every level-one executed by one or more concentration membrane modules in N number of concentration membrane module, also, from the first order to the
M grades, at least it is less than the total effective concentration film surface product for the concentration membrane module for wherein executing i-stage concentration operation and executes (i-1)-th
Total effective concentration film surface product of the concentration membrane module of grade concentration operation；2 < i≤M.
According to a possible embodiments, N number of concentration membrane module is connected in series with each other, each concentration membrane module goes out
Liquid mouth is connected with the inlet of next concentration membrane module, and the inlet of first concentration membrane module, which is connected to film, to be concentrated
System supplies the feed liquor bus of the solution to be concentrated, wherein effective concentration film surface product of each concentration membrane module is sequentially reduced.
According to a possible embodiments, N number of concentration membrane module is connected in parallel with each other, each concentration membrane module into
Liquid mouth is connected to the feed liquor bus that the solution to be concentrated is supplied to film concentration systems, the liquid outlet of each concentration membrane module
Be connected to the film concentration systems goes out liquid bus, wherein as the series of concentration operation increases, used in reducing
The number of membrane module or the combination by the concentration membrane module or membrane module that use selected by change is concentrated, so that described in executing
Total effective concentration film surface product of every level-one in M grades of concentration operations reduces step by step as the series increases.
According to a possible embodiments, each concentration membrane module makes its liquid outlet and next concentration film by the first series valve
The tapping side of the liquid outlet of component is connected, and the inlet of its liquid outlet and next concentration membrane module is made by the second series valve
Liquid feeding side be connected, the liquid feeding side of both first series valve and described second series valve and the concentration membrane module go out
Liquid mouth is connected, and in addition to the first concentration membrane module, each concentration membrane module, which is equipped with, is connected to the liquid feeding side of its inlet to film
Concentration systems supply the bus liquid feed valve of the feed liquor bus of the solution to be concentrated, and the liquid feed valve of the first concentration membrane module is used as the
The bus liquid feed valve of one concentration membrane module.
According to a possible embodiments, each effective concentration film surface product that membrane module is concentrated is identical or different.
According to a possible embodiments, membrane module is concentrated for each, tool is set between its inlet and liquid outlet
Have a by-pass line of bypass valve, the bypass valve is opened and corresponding inlet when closing, liquid around the concentration membrane module to
The concentration membrane module is set to fail.
According to a possible embodiments, one of each the first series valve that membrane module is concentrated and the second series valve are opened another simultaneously
One closing.
According to a possible embodiments, each valve is solenoid electric valve.
It is each that membrane module is concentrated at its liquid outlet equipped with liquid Concentration Testing element out according to a possible embodiments, and/
Or, respectively concentration membrane module is equipped with feed liquor Concentration Testing element at its inlet.
According to a possible embodiments, the film concentration systems are equipped with the concentration for measuring dope after concentration operations at different levels
Graded concentrations detecting element.
According to a possible embodiments, the liquid bus out of the film concentration systems, which is equipped with to lead to, has expection for storing
First liquid valve of the dope tank of the final concentrate of concentration, and/or lead to the original fluid container for storing the solution to be concentrated
The second liquid valve.
According to a possible embodiments, each membrane module that is concentrated has the production water out for leading to and producing water bus.
According to a possible embodiments, the film concentration systems further include control assembly, and the control assembly is based on each
Strength of fluid after grade concentration operation, effective concentration film table based on the expected concentration and based on each concentration membrane module
Also need what concentration operation or determination will in order to keep subsequent concentration operation optimal after this grade of concentration operation of areal calculation
The combination of the concentration membrane module or membrane module that use, and control each valve of corresponding concentration membrane module.
According to a possible embodiments, the control assembly includes one or more of following:
The control circuit for controlling each valve and being electrically connected with each Concentration Testing element；
Calculate or show the counter of concentration operation series；
The optimization calculator for optimizing subsequent concentration operation, for determining the subsequent concentration membrane module used, needing to open
Or the valve closed；
For opening respective valves according to the result of optimization calculator or closing the movement device of respective valves；
For the indicator of user's display alarm information.
According to another aspect of the present invention, a kind of control assembly for above-mentioned film concentration systems is provided.
According to a possible embodiments, the control assembly is the form of electronic control unit or integrated chip.
According to another aspect of the invention, provide it is a kind of using above-mentioned film concentration systems treat concentrated liquid carry out it is multistage
The method of concentration, wherein the solution to be concentrated is supplied to the film concentration systems and carries out M grades of concentration operations, every grade of concentration
Operation is carried out by one or more concentration membrane modules in the film concentration systems, also, from the first order to M grades, with
The increase of concentration operation series at least makes the total effective concentration film surface for the concentration membrane module for wherein executing i-stage concentration operation
Product is less than the total effective concentration film surface product for the concentration membrane module for executing (i-1)-th grade of concentration operation；2 < i≤M.
According to a possible embodiments, the method includes measuring the feed liquor concentration of each concentration membrane module and out liquid concentration,
And then obtain the gross blockage factor of the concentration membrane module.
According to a possible embodiments, the method includes solution in liquid bus is measured after every level-one concentration operation
Concentration, and according to measured concentration and be expected the difference of concentration, each gross blockage factor that membrane module is concentrated, membrane module be respectively concentrated
Effective concentration film surface product, to optimize subsequent concentration operation.
It is described to optimize subsequent concentration operation including determining that next stage concentration operation needs according to a possible embodiments
Total effective concentration film surface product, next stage concentration operation is by concentration membrane module to be used.
According to a possible embodiments, the subsequent concentration operation of optimization is executed by control assembly, the control group
Part also controls the movement of each valve of each concentration membrane module.
In accordance with a further aspect of the present invention, a kind of membrane structure is provided, for the concentration membrane module of above-mentioned film concentration systems,
The membrane structure includes putamina body and more film wires for being encapsulated in film enclosure interior,
The solution to be concentrated enters each film wire via the feed liquor port on the putamina body, generates after the concentration of each film wire
The permeate that is generated after being concentrated via the outlet end mouth discharge membrane structure on the putamina body of dope via the putamina body
On production water end (W.E.) mouth be discharged membrane structure, wherein it is described concentration membrane module effective concentration film surface product by the membrane structure knot
Structure parameter determines.
According to a possible embodiments, the structural parameters include at least one of following: quantity, the film wire of film wire
The length of cross sectional dimensions (diameter), film wire.
Film concentration systems according to the present invention can treat concentrate solution and carry out multistage concentration, have greater flexibility,
It is at low cost and practical.Concentrate solution is treated using above-mentioned film concentration systems and method and carries out multistage concentration, with series
Increase, the raising of solution concentration, the reduction of volume can according to need change, particularly reduce the total effective of concentration membrane module
Film surface product (or being discharge area) is concentrated, the residual of concentrated liquid can be reduced, target substance obtains in raising concentrate
Rate, while reducing maintenance, flushing and regeneration cost.Simplify film concentration systems, the cleaning of membrane module especially is concentrated simultaneously
Save cost related to this.In the case where the concentration membrane module of film concentration systems is connected in series, additionally it is possible to industrial production
Other processes in chain are carried out continuously, for example, with algae seeded process, algae culture process, algae drying process and it is other after
Continuous process is continuously got up, and realizes continuity industrial production line.
Detailed description of the invention
Fig. 1 shows the first embodiment of film concentration systems according to the present invention；
Fig. 2 shows the second embodiments of film concentration systems according to the present invention；
Fig. 3 shows the third embodiment of film concentration systems according to the present invention；And
Fig. 4 shows a kind of exemplary knot that membrane module can be concentrated used in film concentration systems according to the present invention
Structure.
Specific embodiment
Film concentration systems according to the principles of the present invention, including differently arranged multiple film thickening apparatus.Raw material
Liquid (solution to be concentrated) is carried out multistage concentration, and the total effective film for carrying out the film thickening apparatus of concentration not at the same level to material liquid is concentrated
Surface area can according to need and different, so as to selectively, more efficiently utilize film thickening apparatus, it is unnecessary to avoid
Ground redundantly utilizes film thickening apparatus.
Preferably, series material liquid being concentrated is higher, and strength of fluid is higher, and volume is smaller, it is required and
Therefore total effective film condensing surfaces product used in is smaller, or the film thickening apparatus used is fewer, needs to rinse in this way or again
The film thickening apparatus of raw (recovery) is fewer, and cleaning process or operation are contracted by or simplify.
It is also possible that material liquid, which only needs to carry out primary concentration,.In this case, using effective film condensing surfaces product
Selectable film concentration systems are especially advantageous, former by total effective film condensing surfaces product of adjusting film concentration systems
Feed liquid can reach expected concentration merely through primary concentration.
" material liquid " according to the present invention can be microalgae solution, generate the concentrate of microalgae (hereinafter after concentrated
Otherwise referred to as " dope ") and permeate (being hereinafter illustrated by taking " water " as an example).
Three kinds of embodiments of film concentration systems according to the principles of the present invention are described below in detail.It points out initially that, not
In same attached drawing, function or the same or similar element of structure are designated by like reference numerals throughout.
Fig. 1 shows the first embodiment of film concentration systems according to the principles of the present invention, plurality of concentration film group
Part is connected in series, and each membrane module that is concentrated has different effective film condensing surfaces products, and it is dense to carry out level-one to liquid respectively
Contracting.In this way, realizing that the concentration not at the same level to material liquid is long-pending using different effective film condensing surfaces.Preferably, rank is lower
(small), the effective film condensing surfaces product that membrane module is concentrated are bigger.
Specifically, with reference to Fig. 1, the film concentration systems of first embodiment mainly include initial for storing according to the present invention
The original fluid container 10 of liquid to be concentrated, for being concentrated and being generated respectively concentrate and water step by step for the liquid to be concentrated
Multiple concentration membrane modules 100 (100-1,100-2 ... 100-N), for storing the dope tank 70 of final concentrate；And for storing up
Deposit the production water pot 90 of water caused by concentrations at different levels.
In the present first embodiment, N number of concentration membrane module 100-1,100-2 ... 100-N of multiple concentration membrane modules 100
It is sequentially connected in series.Each concentration membrane module 100 has corresponding inlet, such as each inlet is separately employed at this and sets
The liquid feed valve 110 (110-1,110-2 ... 110-N) set indicates；Concentrated solution outlet, such as each concentrated solution outlet are separately employed at this
The liquid valve 120 (120-1,120-2 ... 120-N) of setting indicates；With production water out 130 (130-1,130-2 ... 130-N).
For the concentration membrane module 100 of front N-1, each concentration membrane module 100 concentrated solution outlet 120 with
The inlet 110 of the latter concentration membrane module 100 is connected, and the concentrated solution outlet 120 and dope of membrane module 100 is concentrated in n-th
Tank 70 is connected to, and the production water out 130 of each concentration membrane module 100 is connected to via production water bus 30 produces water pot 90, and the 1st
The inlet of concentration membrane module 100 is connected to original fluid container 10.
Preferred aspect according to the invention, for N number of concentration membrane module 100 of this first embodiment, each
Membrane module 100 is concentrated in effective concentration film surface product S (S-1, S-2 ... S-N) both greater than behind one that membrane module 100 is concentrated
Effectively concentration film surface product S.
Film concentration systems according to the present invention further include (specific positioned at original fluid container 10 and first concentration membrane module 100-1
For total feed liquor route 20 between the inlet 110-1 of first concentration membrane module 100-1), it is preferable that stoste valve 22 and stoste
Pump 24 is set on total feed liquor route 20, the relevant parameter of supply and cutting and control stoste supply for controlling stoste.
In this way, the initial liquid to be concentrated from original fluid container 10 by via stoste valve 22 and raw liquor pump 24, via total feed liquor
Route 20 is concentrated supplied to the inlet 110-1 of first concentration membrane module 100-1 by first concentration membrane module 100-1
Afterwards, the first order concentrate for the concentrated solution outlet 120-1 discharge for membrane module 100-1 being concentrated via first is provided to second
The inlet 110-2 of membrane module 100-2 is concentrated, the water for producing water out 130-1 discharge of membrane module 100-1 is concentrated via first
Water pot 90 is produced by being discharged into via production water bus 30；First order concentrate is raw after being concentrated by second concentration membrane module 100-2
At second level concentrate via concentrated solution outlet 120-2 be expelled to third concentration membrane module (not shown) inlet (not
Show), the water of generation is discharged into production water pot 90 via production water out 130-2, via production water bus 30；And so on；Until logical
Cross the last one, n-th concentration membrane module 100-N concentration, reach the concentrate of expected concentration by via concentrated solution outlet 120-N
It is expelled to dope tank 70, the water of discharge is discharged into production water pot 90 yet by water bus 30 is produced.
Effective concentration film surface product of favorable characteristics according to the present invention, previous concentration membrane module 100 is greater than latter concentration
Effective concentration film surface product of membrane module 100, closer to dope tank 70, effective concentration film surface product that membrane module 100 is concentrated is got over
Small, strength of fluid is higher.Effectively concentration film surface product it is smaller, remain in concentration membrane module in, i.e. waste dry matter it is fewer, mention
High dry matter yield.
In addition to this, this series connection type film concentration systems being gradually reduced using effective concentration film surface product, by reasonably
The quantity (series being concentrated) of concentration membrane module 100 is set and effective concentration of each concentration membrane module 100 is reasonably set
Film surface product, this series connection type film concentration systems can be carried out continuously with other processes in industrial production chain, such as are inoculated with algae
Process, algae culture process, algae drying process and other subsequent processes continuously get up, and realize continuity industrial production line.
Preferably, bypass valve 160-N can be set for each concentration membrane module 100-N.Under normal conditions, if it is desired that with
Each concentration membrane module 100, then all bypass valve 160-N, which are closed, opens simultaneously all liquid feed valves 110, and liquid passes through each
Be concentrated membrane module 100-N step by step, carry out N grade be concentrated.If it is desired to around some concentration membrane module 100, not use the concentration
Membrane module 100 is concentrated, then need to only open the bypass valve 160-N corresponding to the concentration membrane module 100 and turn off dense corresponding to this
The liquid feed valve 110 of contracting membrane module 100.For example, if only need to using first and the last one concentration membrane module 100-1 and
100-N concentration i.e. enough, is then opened each bypass valve 160 in addition to bypass valve 160-1 and 160-N and is also shut off except feed liquor
Each liquid feed valve 110 except valve 110-1 and 110-N, then liquid is only by concentration membrane module 100-1 and 100-N and around all
Other concentration membrane modules 100.Meanwhile if by certain membrane module processing after, it is desirable to the concentrate being concentrated to get again by
The membrane module 100 is repeated one or more times processing, then can also use each corresponding bypass valve 160.
In this way, realizing the purpose that can be selected the series of concentration, required concentration membrane module 100 can be selected.
Additionally preferably, can be arranged at the liquid valve 120-N after concentration operations at different levels for detecting solute (algae in liquid
Class) concentration goes out liquid Concentration Testing element 170-N, while the control assembly for controlling each valve, such as electronic control unit is arranged.
If liquid, after j-th stage is concentrated, the concentration through being gone out liquid Concentration Testing element 170-j detection meets, is for example equal to or high
In expected concentration, then control assembly be automatically closed the liquid feed valve 110 of subsequent each concentration membrane module 100, open simultaneously it is subsequent each
The bypass valve 160 of a concentration membrane module 100, fail subsequent each concentration membrane module 100, is directly entered j-th stage concentrate
Dope tank 70.
It is further preferred that control assembly can based on strength of fluid measured after every level-one concentration operation, be based on institute
It states expected concentration and effective concentration film surface product based on each concentration membrane module 100 is calculated, obtain this grade concentration behaviour
What concentration operation is also needed after work or determines that later use which or those concentration membrane modules 100 carry out concentration operation most
It is excellent, and control the liquid feed valve 110 of corresponding concentration membrane module 100 and the working condition of bypass valve 160.
In addition it is further preferred that film concentration systems according to the principles of the present invention are additionally provided with positioned at each concentration film group
Feed liquor Concentration Testing element 180-N at the liquid feed valve 110 of part 100, feed liquor concentration of the control assembly based on concentration membrane module 100
Detecting element 180-N is with the concentration difference that liquid Concentration Testing element 170-N is measured out and based on the concentration membrane module 100
The effectively concentration film surface product stopping state, such as gross blockage factor R that judge the concentration membrane module 100, be equal in gross blockage factor R or
In the case where higher than default gross blockage factor R0, in subsequent concentration operation, control assembly will not be considered any further or use this concentration
Membrane module 100, and remind this concentration of user membrane module 100 to clean by mode appropriate, such as pass through view
Feel or the modes such as the sense of hearing remind user.
As above-mentioned, the control assembly of film concentration systems according to the principles of the present invention may include control each valve 110,120,
130,160 etc. the, control circuit being connected to each Concentration Testing element 170 and 180 etc.；Calculate or show the meter of concentration operation series
Number device；The optimization calculator for optimizing subsequent concentration operation, for determining the subsequent concentration membrane module 100 used, which valve
It needs to close and which valve needs to open；For opening respective valves according to the result of optimization calculator or closing respective valve
The movement device of door；And which concentration film the indicator for user's display alarm information, this prompting message include but is not limited to
Component 100 needs to clean, this indicator can be any kind of display, buzzer etc..
In first embodiment shown in fig. 1, the last one concentration membrane module 100-N liquid valve 120-N with it is dense
Between flow container, i.e. liquid bus 40 is equipped with the first liquid valve 75 out, in the liquid valve 120- of the last one concentration membrane module 100-N
Between N and original fluid container 10, i.e. liquid bus 40 is equipped with the second liquid valve 85 out.If in liquid via concentration membrane module 100-N
After concentration, meets and (be greater than or be greater than) expected concentration by going out the strength of fluid that liquid Concentration Testing element 170-N is detected, that is, beat
It opens the first liquid valve 75, close the second liquid valve 85, liquid is directed to dope tank 70；If in liquid via concentration film group
After part 100-N concentration, expected concentration is not met and (is lower than) by going out the strength of fluid that liquid Concentration Testing element 170-N is detected,
It opens the second liquid valve 85, close the first liquid valve 75, liquid is directed to original fluid container 10, is further concentrated.
The film concentration systems of this first embodiment can realize the continuous operations mistake for carrying out continuous sample introduction and continuous concentration
Journey can complement each other to form a complete continuous assembly line with the step of other continuous productive processes.Wherein, concentration is maximum and minimum
The concentrate of volume avoids in the membrane module of large area after having the membrane module processing of minimum total effectively concentration film surface product
It is covered with residuals, therefore reduces the flushing difficulty of membrane module, improves the yield of substance dry weight in concentrate.
Fig. 2 shows the second embodiments of film concentration systems according to the principles of the present invention, implement with first in Fig. 1
Mode is different, and multiple concentration membrane modules 100 (100-1,100-2 ... 100-N) in second embodiment are connected in parallel.
Each concentration membrane module 100 can have identical or different effective concentration film surface product S (S-1, S-2 ... S-N).Pass through
Different concentration membrane modules 100 is selectivelyed switch on/closed in the concentration operation not at the same level to liquid, it can be in concentration not at the same level
Different total effective concentration film surface product S0 is obtained in operation.
With reference to Fig. 2, each inlet that membrane module 100 is concentrated is all via the total of respective liquid feed valve 110 and film concentration systems
Feed liquor route 20 is connected, and the concentrated solution outlet left from each concentration membrane module 100 is all dense via respective liquid valve 120 and film
The liquid bus 40 that goes out of compression system is connected, and the production water out 130 of membrane module 100 is respectively concentrated all via production water bus 30 and production
Water pot 90 is connected.
Property method as an example, when carrying out first order concentration, the liquid feed valve 110 of all concentration membrane modules 100
To open, the initial liquid to be concentrated from original fluid container 10 is supplied to each concentration membrane module 100 simultaneously from original fluid container 10, this
When always effectively concentration film surface product S0 be equal to the respective effective concentration film surface of N number of concentration membrane module 100 and accumulate the sum of S1, i.e. S0=
S1+S2+…+S-N。
After carrying out first order concentration to solution simultaneously by all concentration membrane modules 100, via each concentration membrane module 100
The concentrate that liquid outlet 120 is discharged is pooled to out liquid bus 40, to be collected into original fluid container 10.At this point, in original fluid container 10
Solution concentration has reached expected concentration, then closes raw liquor pump 24 and stoste valve 22, terminates concentration processes.If in original fluid container 10
The also not up to expected concentration of solution concentration, then continue next stage, i.e. second level concentration.
Preferably, total concentration measuring cell 190 is set in liquid bus 40 out, if surveyed by total concentration measuring cell 190
The solution concentration obtained has reached expected concentration, then closes raw liquor pump 24 and stoste valve 22, terminates concentration processes.If by total dense
The also not up to expected concentration of the solution concentration that degree measuring cell 190 measures, then with the as above phase described in first embodiment
Same mode, control assembly determine total effective concentration film surface product S0 needed for next stage concentration, determine required, optimization
The combination of membrane module 100 is concentrated, and correspondingly controls the liquid feed valve 110 of each concentration membrane module 100.Open concentration membrane module
100 liquid feed valve 110 enables the concentration membrane module 100, and otherwise fail the concentration membrane module 100.
Additionally preferably, it can also be arranged as in the first embodiment and go out liquid concentration for each concentration membrane module 100
Detecting element 170-N and feed liquor Concentration Testing element 180-N, to obtain the gross blockage factor of each concentration membrane module 100, for excellent
Change next stage concentration operation.
In present embodiment, it is each be concentrated membrane module 100 can effective concentration film surface product S having the same, it is dense by adjusting
Contracting membrane module 100 obtains different total effective concentration film surface product S0 using number.
However, it is also possible to be set as a certain or certain concentration membrane modules 100 can have it is different from other concentration membrane modules 100
Effective concentration film surface product S, need to consider when control assembly optimizes operation at this time it is different concentration membrane modules 100 it is respective
Different effective concentration film surface product S, and carry out the combination and choice of corresponding membrane module 100.
In this second embodiment, original fluid container 10 is used as the dope tank for storing final concentrate simultaneously, with first
Embodiment is compared, and dope tank 70 is omitted, and is further simplified the structure of film concentration systems.It is to be understood that in necessary situation
Under, for the continuity for the industrial sector chain that is connected with other processes on industrial sector chain, realizes, individual dope still can be set
Tank.
Fig. 3 shows the third embodiment of film concentration systems according to the principles of the present invention, with first in Fig. 1 and 2
Different with second embodiment, the mode that multiple concentration membrane modules in 3rd embodiment mix in series and parallel connects.
Different from the first and second embodiments, in the present embodiment, the first concentration membrane module 100-1 has and feed liquor
(bus) liquid feed valve 110-1 that bus 20 is connected to, remaining is respectively concentrated membrane module 100 and is respectively provided with the entrance for making its liquid feed valve 110
Bus liquid feed valve 410-2,410-3 ... the 410-N being connected to feed liquor bus 20.
There is first concentration membrane module 100-1 the outlet for making its liquid valve 120-1 and the outlet of the second liquid valve 120-2 to connect
The the first logical series valve 310-1 and liquid feed valve 110- for making the outlet of its liquid valve 120-1 that membrane module 100-2 be concentrated with second
The second series valve 210-1 that 2 entrance is connected, membrane module 100-1 to the N-1 concentration membrane module 100- of second concentration
(N-1) identical as the first concentration membrane module 100-1.
Bus liquid feed valve 410-j and its previous concentration membrane module 100- (j-1) of membrane module 100-j (j is greater than 1) is concentrated
Second series valve 210- (j-1) is in parallel, the outlet of bus liquid feed valve 410-j and the outlet of the second series valve 210- (j-1) all with
The entrance connection of the liquid feed valve 110-j of membrane module 100-j is concentrated.
There are three kinds of situations: 1) the second series valve 210- (j- by bus liquid feed valve 410-j and the second series valve 210- (j-1)
1) it opens and bus liquid feed valve 410-j closing, at this point, the treatment liquid of concentration membrane module 100-j is by previous concentration membrane module
100- (j-1) supply, the two is series relationship；2) the second series valve 210- (j-1) is closed and bus liquid feed valve 410-j is opened,
At this point, the treatment liquid of concentration membrane module 100-j is supplied by feed liquor bus 20, in the total of previous concentration membrane module 100- (j-1)
In the case that line liquid feed valve 410- (j-1) or 110-1 is also opened, concentration membrane module 100-j and previous concentration membrane module 100- (j-
1) be parallel relationship, 3) bus liquid feed valve 410-j and 210- (j-1) is both closed or valve 100-j is closed, is concentrated membrane module
100-j is disabled.
First series valve 310- (j-1) of concentration membrane module 100- (j-1) only has the second series valve 210- (j-1) to close
In the case of can just be opened and play a role, at this time from concentration membrane module 100- (j-1) liquid valve 120- (j-1) dope
Around concentration membrane module 100-j.In this case, if the bus liquid feed valve 410-j that membrane module 100-j 1) is concentrated is opened,
Liquid is supplied by feed liquor bus 20 in concentration membrane module 100-j, with all concentrations membrane module 100-1 to 100- (j-1) in front
Combination forms parallel relationship；If 2) the bus liquid feed valve 410-j that membrane module 100-j is concentrated is closed, membrane module 100-j mistake is concentrated
Effect.
And so on, in this manner it is achieved that any type of series connection and combination in parallel in concentration membrane module 100
Formula.
As an example, concentration membrane module 100-1 and concentration membrane module 100-2 are connected in series, the tandem compound and concentration
Membrane module 100-3 is in parallel, this result is following simultaneously to be realized: for the liquid feed valve 110-1 and liquid valve of membrane module 100-1 to be concentrated
120-1 is opened, and the first series valve 310-1 is closed, and the second series valve 210-1 is opened；For the liquid feed valve of membrane module 100-2 to be concentrated
410-2 is closed, and liquid feed valve 110-2 is opened, and the first series valve 310-2 is opened, and the second series valve 210-2 is closed；For film to be concentrated
The liquid feed valve 410-3 and 110-3 and liquid valve 120-3 of component 100-3 is opened.
Using third embodiment shown in Fig. 3, by enabling partial concentration membrane module, which can solve industrial concentration
Membrane module utilization rate low problem when feed liquid treating capacity is few in the process.It is identical as second embodiment, in the third embodiment party of Fig. 3
In formula, each membrane module that is concentrated can have the effective concentration film surface being same or different to each other product.
Using Fig. 2 or shown in Fig. 3 second or third embodiment, can there will be identical or different effective concentration film table
N number of concentration membrane module of area is together in parallel, and by selectivelying switch on one or more, makes most start first dense
The solution of degree passes through the combination of membrane module or membrane module with larger total effectively concentration film surface product；Reach second in concentrate
When concentration, make solution by the combination of the lesser membrane module of total effectively concentration film surface product or membrane module.
According to different treating capacities, pass through the membrane module or membrane module for selecting that there is total effectively concentration film surface product appropriate
Combination, when can solve to be concentrated a small amount of solution (such as small-scale experiment) because system can handling dead capacity it is larger due to cannot obtain it is more highly concentrated
The problem of demagnification number.
By selectivelying switch on one or more of N number of concentration membrane module, concentration membrane module number capable of reducing using
Amount, such as using whole membrane modules when first order concentration, it is subsequent as the increase of series uses part membrane module, final concentration
Highest feed liquid is only concentrated use in membrane module or combination with minimum total effectively concentration film surface product, and it is dense can also to reduce high concentration
Substance dry weight disappearance rate in contracting liquid.Increase the yield of substance dry weight in the using flexible and solution to be concentrated of membranous system.Finally
Because high concentration solution to be concentrated concentration remain on some or several membrane modules, therefore can reduce membrane module cleaning and it is regenerated
Difficulty.
Using Fig. 2 or shown in Fig. 3 second or third embodiment, when the primary liquid accumulated amount for needing to be concentrated is on the low side, example
When such as carrying out small-scale experiment, optional total combination that the long-pending suitable or lesser membrane module of film surface or membrane module is effectively concentrated increases
The treatment effeciency of blooming concentration systems improves cycles of concentration, improves the yield of substance dry weight in concentrate.
Using Fig. 2 or shown in Fig. 3 second or third embodiment, always have used in concentration operation by reducing step by step
Effect concentration film surface product, makes most dense, minimum volume concentrate finally concentrate on least concentration membrane module being concentrated, so only
There is remaining concentrate on least concentration membrane module most, rather than is remained on each concentration membrane module many because of concentration
The excessively high concentrate for being difficult to be discharged avoids having residual in all films, improves the rate of recovery of concentrate, and only least
Concentration membrane module pollution condition is the most serious, simplifies the cleaning of concentration membrane module.
Although it is not shown in the diagrams, but it will be understood to one skilled in the art that can be arranged for each concentration membrane module 100
Feed liquor Concentration Testing element 180-N and out liquid Concentration Testing element 170-N to obtain the state of the concentration membrane module 100 in real time,
It can also be in liquid bus 40 out, the last one the concentration downstream membrane module 100-N (or tapping side) setting total concentration measuring cell
To be obtained off the concentration of the liquid of this system, and by each parameter of control assembly real-time optimization next stage concentration operation.
The present invention also designs a kind of method that algae solution is concentrated using above-mentioned film concentration systems, in the method, to
Concentrated liquid has expected algae solution concentration after being carried out N grades of concentrations, and every level-one concentration operation in the N grades of concentration operation is all
It is carried out by the one or more in multiple concentration membrane modules of the film concentration systems, with the maximum of the series of concentration operation,
The total effective concentration film surface product for executing the concentration membrane module of the concentration operation is reduced.
Film concentration systems according to the present invention and method preferably can be applied to the concentration of micro algae culturing liquid, concentration
The permeate of generation, i.e. production water can be recovered and then be used in the algae incubation of next time.Concentrate then can enter centrifugation
Separation, spray drying program are further processed the algae powder of proper drying.
In this specification, each valve can be the form of solenoid valve, to be automatically controlled by control assembly.
Fig. 4 shows a kind of exemplary film that membrane module can be concentrated used in film concentration systems according to the present invention
Structure.
The more film wires overall membrane structure 200 the putamina body 210 including airtight sealing and be encapsulated in inside putamina body 210
220.Have for making liquid to be concentrated enter the feed liquor port 212 inside membrane structure 200, after making concentration on putamina body 210
Dope leaves the outlet end mouth 214 of membrane structure 200, and the production water for making the water generated in concentration operation leave membrane structure 200 goes out
Mouth 216.The liquid to be concentrated entered from the feed liquor port 212 of putamina body 210 is provided to each film wire via feed liquor region 232
220 feed liquor port 222, dope after leaving being concentrated of each 220 outlet end mouth 224 of film wire via liquid zone domain 234 out and from
The outlet end mouth 214 of putamina body 210 leaves membrane structure 200.Film wire 220 be with hollow tubular structure, can be by any appropriate
Water (permeate) permeable material is made.
It further include film wire sealing fixed structure 240 in putamina body 210, film wire sealing fixed structure 240 is respectively used to fix
Both ends of each film wire 220, and limit the feed liquor region 232 jointly with the inner wall of putamina body 210, liquid zone domain 234 out, with
And produce water area 236.Film wire 220 is left via the wall of film wire 220 from the water of the concentrated generation of liquid in film wire 220, is converged
Membrane structure 200 is given off to production water area 236, and then via water out 216 is produced, then via each film group as shown in Fig. 1 to 3
The production water valve 130 of part 100, which is discharged into, produces water bus 30.
Description such as above with regard to Fig. 1 to 3 is it is found that each membrane module 100 has respective scheduled effective concentration film surface
Product S, this is effectively concentrated film surface product S and is felt by parameters such as the numbers, cross section size, length of film wire 220, by adjusting this
One or more of a little parameters can obtain different effective concentration film surface product S.
The present invention is described about preferred embodiment shown in the accompanying drawings, however, technology people in the art
Member it will be appreciated that shown in attached drawing and content described above is merely illustrative and illustrative purpose, and be not meant to limitation this
The protection scope of invention.For example, the feature in different embodiments, which can according to need, is reassembled into new embodiment, it is single
One or more features in one embodiment, which can according to need, to be modified, make a variation or omits, or is used in other ways
In other embodiment.It, can feature, structure or body to each embodiment without departing from essence of the invention
Existing form etc. carry out various modifications and makes a variation, and these modifications and variation are recognized as and are within the scope of the present invention.This
The protection scope of invention is only defined by the claims.
Claims (18)
1. a kind of film concentration systems for algae solution concentration carry out N number of concentration film of M grades of concentrations to algae solution including being configured for
Component, each concentration membrane module are configured to the algae solution that concentration is supplied to the concentration membrane module, it is dense to be supplied to the film
The solution to be concentrated of compression system generates the final concentrate with expected concentration after via M grades of concentration operations, wherein the M
Every level-one in grade concentration operation is executed by one or more concentration membrane modules in N number of concentration membrane module, also, from
The first order is at least less than the total effective concentration film surface product for the concentration membrane module for wherein executing i-stage concentration operation to M grades
Execute total effective concentration film surface product of the concentration membrane module of (i-1)-th grade of concentration operation；2 < i≤M≤N,
The film concentration systems further include control assembly, the control assembly based on after every level-one concentration operation algae solution concentration,
Effective concentration film surface product based on the expected concentration and based on each concentration membrane module is gone back after calculating this grade of concentration operation
Need what concentration operation or determine in order to keep subsequent concentration operation optimal and by concentration membrane module to be used or membrane module
Combination, and control each valve of corresponding concentration membrane module.
2. film concentration systems according to claim 1, wherein N number of concentration membrane module is connected in series with each other, adjacent
The liquid outlet of previous concentration membrane module is connected with the inlet of the latter concentration membrane module in two concentration membrane modules, and first
The inlet of a concentration membrane module is connected to the feed liquor bus that the solution to be concentrated is supplied to film concentration systems, wherein each
Effective concentration film surface product of concentration membrane module is sequentially reduced.
3. film concentration systems according to claim 1, wherein N number of concentration membrane module is connected in parallel with each other, each
The inlet of concentration membrane module is connected to the feed liquor bus that the solution to be concentrated is supplied to film concentration systems, each concentration
The liquid outlet of membrane module is connected to the liquid bus out of the film concentration systems, wherein as the series of concentration operation increases, leads to
Cross the number of concentration membrane module or the group by the concentration membrane module or membrane module that use selected by change used in reducing
Close so that the total effective concentration film surface for executing every level-one in the M grade concentration operation accumulate with series increase and by
Grade reduces.
4. film concentration systems according to claim 1, wherein each concentration membrane module makes its liquid outlet by the first series valve
It is connected with the tapping side of the liquid outlet of next concentration membrane module, its liquid outlet and next concentration is made by the second series valve
The liquid feeding side of the inlet of membrane module is connected, the liquid feeding side of both first series valve and described second series valve with it is described
The liquid outlet of concentration membrane module is connected, in addition to the first concentration membrane module, it is each be concentrated membrane module be equipped with make its inlet into
Liquid side is connected to the bus liquid feed valve that the feed liquor bus of the solution to be concentrated is supplied to film concentration systems, the first concentration membrane module
Liquid feed valve be used as first concentration membrane module bus liquid feed valve.
5. film concentration systems according to claim 3, wherein effective concentration film surface product of each concentration membrane module it is identical or
It is different.
6. film concentration systems according to claim 2, wherein membrane module is concentrated for each, in its inlet and goes out
Setting has a by-pass line of bypass valve between liquid mouth, and the bypass valve is opened and corresponding inlet when closing, and algae solution was around should
Concentration membrane module is to make the concentration membrane module fail.
7. film concentration systems according to claim 6, wherein the first series valve and the second series valve of each concentration membrane module
One of open simultaneously another closing.
8. according to the film concentration systems any in claim 4 to 7, wherein each valve is solenoid electric valve.
9. according to claim 1 to any film concentration systems in 7, wherein each concentration membrane module is set at its liquid outlet
There is liquid Concentration Testing element out, and/or each concentration membrane module is equipped with feed liquor Concentration Testing element at its inlet.
10. film concentration systems according to claim 9, wherein the film concentration systems are equipped with for measuring concentrations at different levels
The graded concentrations detecting element of the concentration of dope after operation.
11. according to claim 1 to any film concentration systems in 7, wherein the film concentration systems go out in liquid bus
Equipped with the first liquid valve led to for storing the dope tank with the final concentrate for being expected concentration, and/or lead to for storing up
Deposit the second liquid valve of the original fluid container of the solution to be concentrated.
12. according to claim 1 to any film concentration systems in 7, wherein each concentration membrane module is total with production water is led to
The production water out of line.
13. film concentration systems according to claim 1, wherein the control assembly includes one or more of following:
The control circuit for controlling each valve and being electrically connected with each Concentration Testing element；
Calculate or show the counter of concentration operation series；
The optimization calculator for optimizing subsequent concentration operation, for determining that the subsequent concentration membrane module used, needs play on or off
The valve closed；
For opening respective valves according to the result of optimization calculator or closing the movement device of respective valves；
For the indicator of user's display alarm information.
14. a kind of using any film concentration systems are multistage to algae solution to be concentrated progress dense according to claim 1 or in 13
The method of contracting, wherein the solution to be concentrated is supplied to the film concentration systems and carries out M grades of concentration operations, every grade of concentration behaviour
Make to carry out by one or more concentration membrane modules in the film concentration systems, also, from the first order to M grades, with dense
The increase of contracting operation series at least makes the total effective concentration film surface product for the concentration membrane module for wherein executing i-stage concentration operation
Less than the total effective concentration film surface product for the concentration membrane module for executing (i-1)-th grade of concentration operation；2 < i≤M.
15. according to the method for claim 14, wherein the method includes measure it is each concentration membrane module feed liquor concentration and
Liquid concentration out, and then obtain the gross blockage factor of the concentration membrane module.
16. according to the method for claim 15, wherein total the method includes measuring liquid after every level-one concentration operation
The concentration of solution in line, and according to the difference of measured concentration and expected concentration, the gross blockage factor, each of each concentration membrane module
Effective concentration film surface product of membrane module is concentrated, to optimize subsequent concentration operation.
17. according to the method for claim 16, wherein described to optimize subsequent concentration operation including determining that next stage is dense
Total effective concentration film surface that contracting operation needs is accumulated, and next stage concentration operation is by concentration membrane module to be used.
18. method according to claim 16 or 17, wherein the subsequent concentration operation of optimization is held by control assembly
Row, the control assembly also control the movement of each valve of each concentration membrane module.
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| CN110172368A (en) * | 2019-06-26 | 2019-08-27 | 毅康科技有限公司 | A kind of integrated apparatus purified and remove pernicious gas in biogas |
| CN111888942A (en) * | 2020-06-10 | 2020-11-06 | 北京首钢朗泽新能源科技有限公司 | Membrane cleaning system |
| CN114768373A (en) * | 2022-05-17 | 2022-07-22 | 同腾新创(苏州)科技有限公司 | Automatic concentration system capable of expanding multistage filtration and use method thereof |
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