CN102000508A - Reciprocating rotation type feed liquid and film separation method and device - Google Patents
Reciprocating rotation type feed liquid and film separation method and device Download PDFInfo
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- CN102000508A CN102000508A CN 201010518791 CN201010518791A CN102000508A CN 102000508 A CN102000508 A CN 102000508A CN 201010518791 CN201010518791 CN 201010518791 CN 201010518791 A CN201010518791 A CN 201010518791A CN 102000508 A CN102000508 A CN 102000508A
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Abstract
The invention discloses a reciprocating rotation type feed liquid and film separation method and a reciprocating rotation type feed liquid and film separation device. The device comprises a feed liquid barrel, a hollow revolving shaft, a rotating disc, a film component and a driving mechanism, wherein the feed liquid barrel is provided with a feed liquid inlet and a discharge hole; the hollow revolving shaft is rotationally arranged in the feed liquid barrel and provided with a liquid outlet; the rotating disc is fixed on the hollow revolving shaft; the film component is fixed on the rotating disc and rotates synchronously along with the rotating disc; the driving mechanism drives the film component to rotate positively and negatively in a reciprocating way; and the positive rotation speed and time of the film component are the same as negative rotation speed and time. The film component rotates positively and negatively in a reciprocating way, so that the speed gradient of a feed liquid flow field on the surface of the film is increased, the shearing stress of liquid is effectively enhanced, film pollution and concentration polarization can be constrained remarkably, flux depression of the film is delayed remarkably, better feed liquid separation effect and higher efficiency are achieved, film cleaning frequency can be reduced and running cost is lowered. The method and the device can be applied in various fields such as bioengineering, medicaments, foods, beverages and waste water treatment and the like.
Description
Technical field
The present invention relates to film separation field technology, refer in particular to a kind of progressive rotation type feed liquid membrane separating method and device that can be applicable in a plurality of fields such as bioengineering, medicine, food, beverage and wastewater treatment.
Background technology
In recent years, the application development of membrane separation technique in fields such as bioengineering, medicine, food, beverage and wastewater treatment is rapid, but, how to alleviate film pollution and effects of Concentration Polarization, delay the decay of membrane flux, be still one of subject matter of puzzlement membrane separation technique development.
Although the development of high performance membrane material has reached very high level, but under the prerequisite of existing membrane material characteristic, the mass transport process of starting with and coming reinforced film to separate from film lock out operation technology and equipment thereof, controlling diaphragm pollutes and the concentration polarization phenomenon, improving the infiltration efficient of film, is to promote one of road that the membrane separation technique industrial applications is direct and real.
At present, from the angle of non-membrane material, improving film surface waterpower shear action is the most frequently used measure that delays The decline of membrane flux.In the measure of numerous raising face shearings rate, tangential at a high speed flowing is the most frequently used method along the film surface with pending feed liquid, just tangential flow filtration (Cross flowfiltration).But studies show that in a large number, though tangential flow filtration can produce hydraulic shear effect preferably by feed liquid flowing fast of film surface, can produce higher axial pressure gradient but the feed liquid flow velocity is too fast, cause TMP skewness, thereby influence the permeation flux and the mass transport process of film along face; And the high speed slipstream needs higher reflux ratio to realize, and the too high energy consumption of feed pump that must cause of reflux ratio is higher.
The rotation membrane separation technique is a kind of membrane filtration form that developed rapidly in nearly 30 years, it produces strong shear action by the rotation of film itself or the film surface that is rotated in of nearly face rotor, cut down film well and polluted and effects of Concentration Polarization, delayed the rate of decay of membrane flux.At present, the kit form of rotation membrane separation technique mainly contains disc type film filter (Rotating disk module) and Rotary pipe type film filter (Rotating cylindrical membranes).CN1762555A discloses a kind of rotation hollow fiber membrane separator in addition, the common feature of these separators is exactly only to rotate along single direction, the high shear rate of face is to be produced by face or the equidirectional high speed rotating operation of strengthening rotor, its shear rate and the increase in direct ratio of film movement velocity, and the consumption of reinforcement energy and square increase in direct ratio of speed, this growth relation causes effective utilization of reinforcement energy sharply to descend along with the increase of rotating speed, and reach very uneconomic degree very soon, even can feed liquid appear and film rotates synchronously, feed liquid approaches zero situation to film surface shear rate.
Summary of the invention
The present invention is directed to the disappearance of prior art existence, its main purpose provides a kind of progressive rotation type feed liquid membrane separating method and device, and it can effectively solve the present feed liquid that occurs when utilizing membrane separation technique to carry out the feed liquid isolated by filtration and rotate so that feed liquid isolated by filtration weak effect problem synchronously with film.
Another object of the present invention provides a kind of progressive rotation type feed liquid membrane separating method and device, and it can effectively solve the present high problem of energy consumption that occurs when utilizing membrane separation technique to carry out the feed liquid isolated by filtration.
For achieving the above object, the present invention adopts following technical scheme:
A kind of progressive rotation type feed liquid membrane separating method utilizes the rotation of membrane module that feed liquid is carried out isolated by filtration, when bringing into operation, this membrane module is rotated in feed liquid along a direction; After membrane module rotates a period of time, make this membrane module to the identical time of opposite spin, and the speed the when speed during this membrane module opposite spin begins to rotate with membrane module is identical, this membrane module is in the process of opposite spin, the numerical value superposition of rotary speed and feed liquid flow velocity makes the velocity gradient of film surface feed liquid increase, improve the liquid shearing stress on film surface, suppressed film and polluted and concentration polarization; In follow-up feed liquid isolated by filtration process, repeat above-mentioned crankmotion, constantly realize the feed liquid isolated by filtration.
As a kind of preferred version, described membrane module is just changeing once with counter-rotating and once is being a swing circle of membrane module, and this swing circle is 2S.
A kind of progressive rotation type feed liquid membrane separation device includes a feed liquid tube, a hollow axle, two rotating disks and a plurality of membrane module; This feed liquid tube is provided with and is communicated with liquor inlet and discharging opening extraneous and feed liquid tube inside; This hollow axle is arranged in the feed liquid tube rotationally, is provided with in this hollow axle to be communicated with liquid outlet extraneous and hollow axle inside; This two rotating disk is arranged in the feed liquid tube, and this two rotating disks fixed interval is rotated synchronously with hollow axle on this hollow axle; The two ends of this membrane module are individually fixed on this two rotating disk and rotate synchronously with rotating disk, and the inside of this membrane module is by the internal communication of collector pipe and this hollow axle, further include driving mechanism, this driving mechanism drives this hollow axle and back and forth rotates and reverse, speed that this hollow axle back and forth rotates and reverse and the time that rotates and reverse are identical, this membrane module back and forth rotates and reverse synchronously with this hollow axle, with the velocity gradient of increase film surface feed liquid, thereby improve the liquid shearing stress on film surface.
As a kind of preferred version, be fixed with 24 aforementioned films assemblies between described two rotating disks, those membrane modules are " rice " font successively arranges, and the caliber of each membrane module is 2cm.
As a kind of preferred version, described rotating disk is individual layer solid disc or double-deck hollow disc, and the radius of this rotating disk is 10cm.
As a kind of preferred version, described membrane module is external-compression type tubular membrane component or doughnut formula membrane module.
As a kind of preferred version, described external-compression type tubular membrane component is the milipore filter of PVDF material.
As a kind of preferred version, described doughnut formula membrane module is a polypropylene ultrafiltration doughnut formula membrane module.
As a kind of preferred version, the time that described hollow axle back and forth rotates one-period is 2S.
As a kind of preferred version, described driving mechanism is a variable-frequency motor.
The present invention compared with prior art has tangible advantage and beneficial effect, particularly, and as shown from the above technical solution:
One, driving membrane module by driving mechanism back and forth rotates and reverse in feed liquid, utilize this membrane module back and forth to rotate and reverse, make the velocity gradient in feed liquid flow field, film surface increase, effectively improved the liquid shearing stress on film surface, avoided the appearance of feed liquid and the synchronous rotation phenomenon of film; And, speed and the time of utilizing this membrane module to rotate and reverse are identical, can suppress film more significantly pollutes and the concentration polarization phenomenon, thereby significantly delay the decay of membrane flux, make the effect of feed liquid isolated by filtration better, efficient is higher, also can reduce the frequency that film cleans simultaneously, thereby reduces operating cost.
Two, by utilizing this membrane module back and forth to rotate and reverse, improve the velocity gradient in feed liquid flow field, film surface with this, obtain higher liquid shearing stress, make membrane filtration operation oversimplify, and the shearing stress of this high liquid is back and forth to be rotated to produce but not pass through constantly to improve rotating speed to same direction by membrane module to produce, help reducing significantly the energy consumption in the feed liquid isolated by filtration process, meet the theory of low-carbon energy-saving environmental protection.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:
Description of drawings
Fig. 1 is the concrete structure view of the present invention's embodiment.
The accompanying drawing identifier declaration:
10, feed liquid tube 11, liquor inlet
12, discharging opening 20, hollow axle
21, liquid outlet 30, rotating disk
40, membrane module 41, collector pipe
50, driving mechanism
The specific embodiment:
Please refer to shown in Figure 1ly, the concrete structure that it has demonstrated the present invention's first preferred embodiment includes a feed liquid tube 10, a hollow axle 20, two rotating disks 30, a plurality of membrane module 40 and driving mechanism 50.
Wherein, this feed liquid tube 10 is provided with and is communicated with liquor inlet 11 and discharging openings 12 extraneous and feed liquid tube 10 inside, this liquor inlet 11 is positioned at the upper end of this feed liquid tube 10, these liquor inlet 11 places are provided with the feed pump (not shown), utilize this feed pump that feed liquid tube 10 is carried out the feed liquid filling, certainly also can manually annotate, not to exceed.This discharging opening 12 is positioned at the lower end of feed liquid tube 10, and this discharging opening 12 is used to discharge concentrate.
These hollow axle 20 relative feed liquid tubes 10 are arranged in the feed liquid tube 10 rotationally, the lower end closed of this hollow axle 20, the upper end of hollow axle 20 is provided with and is communicated with liquid outlets 21 extraneous and hollow axle 20 inside, these liquid outlet 21 places are provided with the peristaltic pump (not shown), utilize this peristaltic pump the liquid that sees through in hollow axle 20 inside can be extracted out, also can extracting out by other modes through liquid of certain these hollow axle 20 inside be not to exceed.
This two rotating disk 30 is arranged in aforementioned feed liquid tube 10, and these two rotating disks, 30 fixed interval rotate synchronously with hollow axle 20 on this hollow axle 20, and the rotating disk 30 in this enforcement is the individual layer solid disc, and its radius is 10cm.
These a plurality of membrane modules 40 vertically are arranged at respectively between aforementioned two rotating disks 30, the two ends of each membrane module 40 are individually fixed on this two rotating disk 30, make each membrane module 40 to rotate synchronously with rotating disk 30, and the inside of each membrane module 40 is all by collector pipe 41 internal communication with aforementioned hollow axle 20, makes to enter into seeing through liquid and can compiling the inside that flows into hollow axle of membrane module 40 inside.Have 24 membrane modules 40 in the present embodiment, those membrane modules 40 are " rice " font successively arranges, and the caliber of each membrane module is 2cm, and this membrane module 40 is the external-compression type tubular membrane component, and this external-compression type tubular membrane component is the milipore filter of PVDF material.In addition, this membrane module 40 can be used for micro-filtration (MF), ultrafiltration (UF), nanofiltration (NF) or counter-infiltration (RO).
This driving mechanism 50 is a variable-frequency motor, driving mechanism 50 drives aforementioned hollow axle 20 by gear drive and back and forth rotates and reverse, this driving mechanism 50 drives this hollow axle 20, and back and forth the time of rotation one-period is 2S, and speed that this hollow axle 20 back and forth rotates and reverse and the time that rotates and reverse are identical, aforementioned films assembly 40 back and forth rotates and reverse synchronously with this hollow axle 20, with the velocity gradient of increase film surface feed liquid, thereby improve the liquid shearing stress on film surface.
The feed liquid separation method that present embodiment is described in detail in detail is as follows:
It is pending feed liquid that present embodiment adopts bovine serum albumen solution, and inlet concentration is 1mg/ml, and this pending feed liquid is filled in the feed liquid tube 10 by feed pump, and charging rate is 0.2L/h, sees through liquid and aspirates by peristaltic pump, and TMP is 0.05Mpa.
At first, opening power, this driving mechanism 50, feed pump and peristaltic pump are started working.Feed pump is filled into pending feed liquid the feed liquid tube 10 from feed liquid tube 10 upper ends, at driving mechanism 50 is under the drive of variable-frequency motor, make this membrane module 40 in pending feed liquid, begin back and forth rotation, its speed of back and forth rotating is 60rpm/min, the time that back and forth rotating one-period needs is 2S, and reciprocal rotation is individual 360 ° in the one-period.More particularly: when bringing into operation, this membrane module 40 rotates along a direction in pending feed liquid, after membrane module 40 rotations a period of time (being 1S), make this membrane module 40 to identical time of opposite spin (being 1S), and the speed identical (60rpm/min) of the speed during these membrane module 40 opposite spins when beginning to rotate with membrane module 40.
This membrane module 40 is when beginning to rotatablely move, and the motion of pending feed liquid has hysteresis effect, thereby produces higher shearing invigoration effect.This membrane module 40 of instantaneous counter-rotation when pending feed liquid flow field movement velocity is close with membrane module 40 rotary speeies, according to law of friction in the newton, the shear stress of fluid is directly proportional with the velocity gradient of fluid, so during opposite spin, the numerical value superposition of rotary speed and feed liquid flow velocity increases the velocity gradient of film surface feed liquid, has improved the liquid shearing stress on film surface.Reuse the asynchronism of pending feed liquid flow field and membrane module 40 motions, produce higher feed liquid velocity gradient repeatedly, the invigoration effect of film surface shear is continued.And, in the moment of reverse rotation, pending feed liquid flow field can produce stronger turbulent flow, form and the similar Stokes of vibrating membrane separator boundary layer, cause enlarging markedly of flow field local pressure, thereby produce the effect of pulsation feed, and Stokes boundary layer and pulsation feed all help suppressing film pollution and effects of Concentration Polarization.
Membrane module 40 afterwards is back and forth in service, carry out said process repeatedly, make that seeing through liquid constantly penetrates membrane module 40 inside, should see through liquid then under the swabbing action of peristaltic pump, enter the collector pipe 41 from the upper end of membrane module 40, enter the inside of this hollow axle 20 subsequently, finally discharge from liquid outlet 21, this concentrate is discharged from the discharging opening 12 of feed liquid tube 10 off and on, thereby has realized the feed liquid isolated by filtration.After tested, the film critical flux is 150L/m
2H, energy consumption is 40W/m
2
And the method for operation of present embodiment is divided into two kinds of situations:
One, discharging the method for operation of concentrate intermittence is: at first close the valve of discharging opening 12, open the valve of liquor inlet 11 and liquid outlet 21.Pending feed liquid enters in the feed liquid tube 10 from liquor inlet 11, start driving mechanism 50, driving membrane module 40 by hollow axle 20 back and forth rotates, seeing through liquid enters in the membrane module 40 under the driving of feed pressure or swabbing pressure, enter hollow axle 20 after collecting by collector pipe 41 then, discharge then, when feed liquid is concentrated to a certain degree, close the valve of liquor inlet 11, concentrate is discharged from discharging opening 12.
Two, the method for operation of discharging concentrate continuously is: the valve of opening liquor inlet 11, discharging opening 12 and liquid outlet 21 simultaneously, pending feed liquid enters in the feed liquid tube 10 from liquor inlet 11, then, start driving mechanism 50, and back and forth rotate by hollow axle 20 drive membrane modules 40.Seeing through liquid enters in the membrane module 40 under feed pressure or swabbing pressure driving, enter in the hollow axle 20 after collecting by collector pipe 41 then, discharge then, concentrate then is back in the feed liquid tube 10, when pending feed liquid was concentrated to a certain degree, filter operation stopped.
In addition, of particular note, speed that this membrane module 40 rotates and reverse and the time that rotates and reverse also can be inequality, can do corresponding the adjustment according to actual conditions, this kind feed liquid separation method can suppress film equally preferably and pollute and concentration polarization, realizes the feed liquid separation.Experiment showed, that to suppress with aforesaid feed liquid separation method that film pollutes and concentration difference polarizes the most obvious, feed liquid separating effect the best.
Then in detail, the second preferred embodiment concrete structure of the present invention is described in detail, still with reference to shown in Figure 1, the structure of present embodiment and aforementioned first preferred embodiment is basic identical for its concrete structure, and difference is:
At first, this rotating disk 30 adopts double-deck hollow disc to replace the individual layer solid disc of first preferred embodiment, and the cavity of this bilayer hollow is communicated between collector pipe 41 inside and hollow axle 20 inside, this bilayer hollow disc and aforementioned individual layer solid disc measure-alike.
Secondly, membrane module 40 in the present embodiment is a doughnut formula membrane module, this doughnut formula membrane module is a polypropylene ultrafiltration doughnut formula membrane module, the quantity of membrane module 40, size and spread geometry and first preferred embodiment is consistent in the present embodiment, the membrane module 40 of the present embodiment back and forth speed of rotation is 120rpm/min, the time that back and forth rotating one-period needs is 2S, and reciprocal rotation is respectively 720 ° in the one-period.
In addition, the membrane filtration TMP of present embodiment is provided by feed pump, and TMP is controlled at 0.1Mpa.
The feed liquid filter separation method of present embodiment and the feed liquid filter separation method of aforementioned first preferred embodiment are basic identical, and different is:
It is pending feed liquid that present embodiment adopts lactoalbumin soln, and its inlet concentration is 4mg/ml, and feed rate is 0.15L/h.This membrane module 40 is in the rotary course that back and forth rotates and reverse, see through liquid and carry out membrane fiber inside, enter then in the cavity of double-deck hollow disc, and enter hollow axle 20 inside with this, finally discharge from liquid outlet 21, concentrate then directly is back to feed liquid tube 10 inside by discharging opening 12 and carries out circulating filtration, and after tested, the critical flux of film is 180L/m
2H, energy consumption is 55W/m
2
Design focal point of the present invention is:
One, driving membrane module by driving mechanism back and forth rotates and reverse in feed liquid, utilize this membrane module back and forth to rotate and reverse, make the velocity gradient in feed liquid flow field, film surface increase, effectively improved the liquid shearing stress on film surface, avoided the appearance of feed liquid and the synchronous rotation phenomenon of film; And, speed and the time of utilizing this membrane module to rotate and reverse are identical, can suppress film more significantly pollutes and the concentration polarization phenomenon, thereby significantly delay the decay of membrane flux, make the effect of feed liquid isolated by filtration better, efficient is higher, also can reduce the frequency that film cleans simultaneously, thereby reduces operating cost.
Two, by utilizing this membrane module back and forth to rotate and reverse, improve the velocity gradient in feed liquid flow field, film surface with this, obtain higher liquid shearing stress, make membrane filtration operation oversimplify, and the shearing stress of this high liquid is back and forth to be rotated to produce but not pass through constantly to improve rotating speed to same direction by membrane module to produce, help reducing significantly the energy consumption in the feed liquid isolated by filtration process, meet the theory of low-carbon energy-saving environmental protection.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. a progressive rotation type feed liquid membrane separating method utilizes the rotation of membrane module that feed liquid is carried out isolated by filtration, it is characterized in that: when bringing into operation, this membrane module is rotated in feed liquid along a direction; After membrane module rotates a period of time, make this membrane module to the identical time of opposite spin, and the speed the when speed during this membrane module opposite spin begins to rotate with membrane module is identical, this membrane module is in the process of opposite spin, the numerical value superposition of rotary speed and feed liquid flow velocity makes the velocity gradient of film surface feed liquid increase, improve the liquid shearing stress on film surface, suppressed film and polluted and concentration polarization; In follow-up feed liquid isolated by filtration process, repeat above-mentioned crankmotion, constantly realize the feed liquid isolated by filtration.
2. progressive rotation type feed liquid membrane separating method according to claim 1 is characterized in that: described membrane module is just changeing once with counter-rotating and once is being a swing circle of membrane module, and this swing circle is 2S.
3. a progressive rotation type feed liquid membrane separation device includes a feed liquid tube, a hollow axle, two rotating disks and a plurality of membrane module; This feed liquid tube is provided with and is communicated with liquor inlet and discharging opening extraneous and feed liquid tube inside; This hollow axle is arranged in the feed liquid tube rotationally, is provided with in this hollow axle to be communicated with liquid outlet extraneous and hollow axle inside; This two rotating disk is arranged in the feed liquid tube, and this two rotating disks fixed interval is rotated synchronously with hollow axle on this hollow axle; The two ends of this membrane module are individually fixed on this two rotating disk and rotate synchronously with rotating disk, and the inside of this membrane module is by the internal communication of collector pipe and this hollow axle, it is characterized in that: further include driving mechanism, this driving mechanism drives this hollow axle and back and forth rotates and reverse, speed that this hollow axle back and forth rotates and reverse and the time that rotates and reverse are identical, this membrane module back and forth rotates and reverse synchronously with this hollow axle, with the velocity gradient of increase film surface feed liquid, thereby improve the liquid shearing stress on film surface.
4. progressive rotation type feed liquid membrane separation device according to claim 3 is characterized in that: be fixed with 24 aforementioned films assemblies between described two rotating disks, those membrane modules are " rice " font successively arranges, and the caliber of each membrane module is 2cm.
5. according to claim 3 or 4 described progressive rotation type feed liquid membrane separation devices, it is characterized in that: described rotating disk is individual layer solid disc or double-deck hollow disc, and the radius of this rotating disk is 10cm.
6. according to claim 3 or 4 described progressive rotation type feed liquid membrane separation devices, it is characterized in that: described membrane module is external-compression type tubular membrane component or doughnut formula membrane module.
7. progressive rotation type feed liquid membrane separation device according to claim 6 is characterized in that: described external-compression type tubular membrane component is the milipore filter of PVDF material.
8. progressive rotation type feed liquid membrane separation device according to claim 6 is characterized in that: described doughnut formula membrane module is a polypropylene ultrafiltration doughnut formula membrane module.
9. progressive rotation type feed liquid membrane separation device according to claim 3 is characterized in that: the time that described hollow axle back and forth rotates one-period is 2S.
10. progressive rotation type feed liquid membrane separation device according to claim 3 is characterized in that: described driving mechanism is a variable-frequency motor.
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| CN 201010518791 CN102000508A (en) | 2010-10-25 | 2010-10-25 | Reciprocating rotation type feed liquid and film separation method and device |
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| CN 201010518791 CN102000508A (en) | 2010-10-25 | 2010-10-25 | Reciprocating rotation type feed liquid and film separation method and device |
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| CN104787916A (en) * | 2015-04-05 | 2015-07-22 | 谢洁萍 | Improved double-stage rotary purification device |
| CN104787915A (en) * | 2015-04-05 | 2015-07-22 | 谢洁萍 | Two-stage rotating purification device |
| CN105129974A (en) * | 2015-08-31 | 2015-12-09 | 北京神州瑞霖环保科技有限公司 | Reciprocating rotary type membrane bioreactor |
| CN105152269A (en) * | 2015-07-03 | 2015-12-16 | 浙江理工大学 | Hypergravity reverse osmosis solution separation apparatus and hypergravity reverse osmosis solution separation method |
| CN105198146A (en) * | 2015-07-03 | 2015-12-30 | 浙江理工大学 | Heat-driven reverse osmosis device and method |
| CN105236684A (en) * | 2015-10-28 | 2016-01-13 | 厦门理工学院 | Anaerobic bidirectionally-rotatable membrane bioreactor used for treating livestock and poultry breeding wastewater and operation method thereof |
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| CN108043094A (en) * | 2018-01-22 | 2018-05-18 | 武汉正天成生物科技有限公司 | Membrane filter system |
| CN111099724A (en) * | 2020-01-14 | 2020-05-05 | 厦门理工学院 | Anaerobic reciprocating type rotary hollow fiber membrane bioreactor and operation method |
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| CN104787915A (en) * | 2015-04-05 | 2015-07-22 | 谢洁萍 | Two-stage rotating purification device |
| CN104787915B (en) * | 2015-04-05 | 2016-07-06 | 谢洁萍 | A kind of twin-stage rotates purifier |
| CN105152269A (en) * | 2015-07-03 | 2015-12-16 | 浙江理工大学 | Hypergravity reverse osmosis solution separation apparatus and hypergravity reverse osmosis solution separation method |
| CN105198146A (en) * | 2015-07-03 | 2015-12-30 | 浙江理工大学 | Heat-driven reverse osmosis device and method |
| CN105152269B (en) * | 2015-07-03 | 2017-10-31 | 浙江理工大学 | Hypergravity counter-infiltration solution separating device and method |
| CN105129974A (en) * | 2015-08-31 | 2015-12-09 | 北京神州瑞霖环保科技有限公司 | Reciprocating rotary type membrane bioreactor |
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| CN107129040A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Method and device for prolonging service life of membrane of sequencing batch membrane bioreactor |
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| CN108043094A (en) * | 2018-01-22 | 2018-05-18 | 武汉正天成生物科技有限公司 | Membrane filter system |
| CN111099724A (en) * | 2020-01-14 | 2020-05-05 | 厦门理工学院 | Anaerobic reciprocating type rotary hollow fiber membrane bioreactor and operation method |
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Application publication date: 20110406 |