CN103691322A - Automatic ultrafiltration system and method for implementing ultrafiltration under constant transmembrane pressure by utilizing same - Google Patents
Automatic ultrafiltration system and method for implementing ultrafiltration under constant transmembrane pressure by utilizing same Download PDFInfo
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- CN103691322A CN103691322A CN201310730213.5A CN201310730213A CN103691322A CN 103691322 A CN103691322 A CN 103691322A CN 201310730213 A CN201310730213 A CN 201310730213A CN 103691322 A CN103691322 A CN 103691322A
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Abstract
The invention discloses an automatic ultrafiltration system which comprises a diaphragm pump, an ultrafiltration membrane module and a PLC (Programmable Logic Controller) controller. The ultrafiltration membrane module is provided with a liquid inlet, a liquid outlet and a liquid return port; a first pressure sensor is connected between the outlet end of the diaphragm pump and the liquid inlet of the ultrafiltration membrane module; the liquid return port of the ultrafiltration membrane module is connected with a second pressure sensor; the second pressure sensor is connected with a shutoff valve; the liquid outlet of the ultrafiltration membrane module is connected with a third pressure sensor; the first pressure sensor, the second pressure sensor, the third pressure sensor and the shutoff valve are respectively connected with the PLC controller. The invention also discloses a method for implementing ultrafiltration under a constant transmembrane pressure by utilizing the automatic ultrafiltration system. The ultrafiltration system implements continuous operation under the constant transmembrane pressure and at constant flow, obtains the most reasonable ultrafiltration conditions, implements the continuous ultrafiltration process and improves ultrafiltration efficiency. Compared with the ultrafiltration efficiency of an existing ultrafiltration system, the ultrafiltration efficiency of the automatic ultrafiltration system can be improved by 30 to 50 percent.
Description
Technical field
The present invention relates to a kind of ultrafiltration system, particularly a kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure.
Background technology
Ultrafiltration be a kind of take screening be separation principle, the film separation process that the pressure of take is motive force, filtering accuracy, within the scope of 0.005-0.01 μ m, can effectively be removed particulate, colloid, bacterium, thermal source and macromolecule organic matter in water, can be widely used in the separation of material, concentrated, purification.Current ultrafiltration system cannot regulate transmembrane pressure and flow automatically, cannot reach the most rational ultrafiltration condition, and film transmitance and sample yield are low, and ultrafiltration efficiency is low.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure that can improve sample film transmitance, sample yield and ultrafiltration efficiency.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions: a kind of automatic ultrafiltration system, comprise membrane pump, milipore filter bag and PLC controller, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, described milipore filter bag has three interfaces, be respectively inlet, liquid outlet and liquid return hole, between the inlet of the port of export of membrane pump and milipore filter bag, by pipeline, be connected with the first pressure sensor, the liquid return hole of milipore filter bag is connected with the second pressure sensor by pipeline, the second pressure sensor connects a shutoff valve, shutoff valve connects again the first electric conductivity detector, after the first electric conductivity detector, stream is out divided into two-way, the recycle control valve of leading up to is communicated with shuttle, the dope of separately leading up to is discharged control valve and is connected with a dope collection container, after being connected with the 3rd pressure sensor and the second electric conductivity detector successively, the liquid outlet of described milipore filter bag is connected with filtrate collection container, described servomotor, the first pressure sensor, the second pressure sensor, the 3rd pressure sensor and shutoff valve are connected with described PLC controller respectively.
Further, described recycle control valve, dope are discharged control valve and are connected with respectively pilot solenoid valve, and the source of the gas input of pilot solenoid valve is connected with power gas source, and pilot solenoid valve is also connected with PLC controller.
Further, described the first electric conductivity detector is connected with industrial touch control computer respectively with the second electric conductivity detector.
The hyperfiltration process of a kind of automatic ultrafiltration system provided by the invention under constant transmembrane pressure, comprises the steps:
(1) first by PLC controller, set constant transmembrane pressure and initial flow, ultrafiltration system brings into operation with initial flow, and the aperture of shutoff valve is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, makes sample solution automatically fill with whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC controller reduces the aperture of shutoff valve according to the feedback signal of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, thereby transmembrane pressure increases gradually, the constant transmembrane pressure that the system of reaching sets, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, by filtrate collection container, collected, PLC controller can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters again shuttle through recycle control valve and carries out loop ultrafiltration, PLC controller, by regulating dope to discharge the opening and closing of control valve, carries out continuous collection or the batch collection of concentrate.
Compared with prior art, the present invention has the following advantages:
(1) automatic ultrafiltration system provided by the invention can only need to be equipped with a membrane pump and milipore filter bag on traditional ultrafiltration system basis, realizes whole ultra-filtration process;
(2) automatic ultrafiltration system provided by the invention can carry out simple parameter setting by the built-in software of PLC controller, revises suitable transmembrane pressure;
(3) three pressure sensors that PLC controller connects according to milipore filter bag regulate shutoff valve aperture and pump discharge, realize constant transmembrane pressure, obtain the most rational ultrafiltration condition, can realize continuous ultrafiltration process, improve ultrafiltration efficiency, than existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%;
(4) system can be cut circulation and the sample collection that valve is realized system stream automatically, can pass through electric conductivity detector, and Real-Time Monitoring solution conductivity value, grasps ultrafiltration schedule in real time, the convenient sample having filtered of processing.
Accompanying drawing explanation
Fig. 1 is the structural representation of automatic ultrafiltration system in the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
As shown in Figure 1, a kind of automatic ultrafiltration system, comprise membrane pump 1, milipore filter bag 3 and PLC controller 15, membrane pump 1 drives by servomotor 2, the arrival end of membrane pump 1 connects a shuttle 12, described milipore filter bag 3 has three interfaces, be respectively inlet 31, liquid outlet 33 and liquid return hole 32, between the inlet 31 of the port of export of membrane pump 1 and milipore filter bag 3, by pipeline, be connected with the first pressure sensor 4, the liquid return hole 32 of milipore filter bag 3 is connected with the second pressure sensor 5 by pipeline, the second pressure sensor 5 connects a shutoff valve 7, shutoff valve 7 connects again the first electric conductivity detector 10, after the first electric conductivity detector 10, stream is out divided into two-way, the recycle control valve 9 of leading up to is communicated with shuttle 12, the dope of separately leading up to is discharged control valve 8 and is connected with a dope collection container 14, after being connected with the 3rd pressure sensor 6 and the second electric conductivity detector 11 successively, the liquid outlet 33 of described milipore filter bag 3 is connected with filtrate collection container 13, described servomotor 2, the first pressure sensor 4, the second pressure sensor 5, the 3rd pressure sensor 6 and shutoff valve 7 are connected with described PLC controller 15 respectively.
Wherein, recycle control valve 9, dope are discharged control valve 8 and are connected with respectively pilot solenoid valve 17, and the source of the gas input of pilot solenoid valve 17 is connected with power gas source, and pilot solenoid valve 17 is also connected with PLC controller 15.Recycle control valve 9, dope are discharged control valve 8 and are pneumatic operated valve.Pilot solenoid valve 17 connects pneumatic bigeminy part 18 and silencer 19.PLC controller 15 is controlled the opening and closing of pilot solenoid valve 17, thereby controls entering of power gas source, and then controls the opening and closing of recycle control valve 9 and dope discharge control valve 8.
The first electric conductivity detector 10 is connected with industrial touch control computer 16 respectively with the second electric conductivity detector 11, can Real-Time Monitoring solution conductivity value, grasp in real time ultrafiltration schedule, the convenient sample having filtered of processing.
Utilize automatic ultrafiltration system of the present invention to realize the hyperfiltration process under constant transmembrane pressure, comprise the steps:
(1) first by PLC controller 15, set constant transmembrane pressure and initial flow, ultrafiltration system brings into operation with initial flow, the aperture of shutoff valve 7 is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump 1, makes sample solution automatically fill with whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC controller 15 reduces the aperture of shutoff valve 7 according to the feedback signal of the first pressure sensor 4, the second pressure sensor 5 and the 3rd pressure sensor 6, thereby transmembrane pressure increases gradually, the constant transmembrane pressure that the system of reaching sets, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet 33 of milipore filter bag 3 is discharged, by filtrate collection container 13, collected, PLC controller 15 can regulate opening or closing of recycle control valve 9, when opening recycle control valve 9, backflow sample solution enters again shuttle 12 through recycle control valve 9 and carries out loop ultrafiltration, PLC controller 15, by regulating dope to discharge the opening and closing of control valve 8, carries out continuous collection or the batch collection of concentrate.When concentrate does not reach certain concentrating degree, dope is discharged control valve 8 in closed condition, when concentrate is concentrated to certain degree, by PLC controller 15, to open dope and discharge control valve 8, concentrate enters dope collection container 14 by pipeline and collects continuously.In addition, also can be in shuttle 12 after the complete ultrafiltration of ultrafiltration sample solution finishes, PLC controller 15 is controlled and is opened dope and discharge control valve 8, carries out the batch collection of concentrate.
The present invention can carry out simple parameter setting by the built-in software of PLC controller 15, revises suitable transmembrane pressure.In hyperfiltration process of the present invention, three pressure sensors that PLC controller 15 connects according to milipore filter bag 3 regulate aperture and the pump discharge of shutoff valve 7, realize constant transmembrane pressure, obtain the most rational ultrafiltration condition, can realize continuous ultrafiltration process, improve ultrafiltration efficiency, than existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%.Automatic ultrafiltration system of the present invention can be used for various ultrafiltration, and desalination is purified, concentrated application and system pilot scale and production level scale.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. an automatic ultrafiltration system, it is characterized in that: comprise membrane pump, milipore filter bag and PLC controller, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, described milipore filter bag has three interfaces, be respectively inlet, liquid outlet and liquid return hole, between the inlet of the port of export of membrane pump and milipore filter bag, by pipeline, be connected with the first pressure sensor, the liquid return hole of milipore filter bag is connected with the second pressure sensor by pipeline, the second pressure sensor connects a shutoff valve, shutoff valve connects again the first electric conductivity detector, after the first electric conductivity detector, stream is out divided into two-way, the recycle control valve of leading up to is communicated with shuttle, the dope of separately leading up to is discharged control valve and is connected with a dope collection container, after being connected with the 3rd pressure sensor and the second electric conductivity detector successively, the liquid outlet of described milipore filter bag is connected with filtrate collection container, described servomotor, the first pressure sensor, the second pressure sensor, the 3rd pressure sensor and shutoff valve are connected with described PLC controller respectively.
2. automatic ultrafiltration system according to claim 1, it is characterized in that: described recycle control valve, dope are discharged control valve and be connected with respectively pilot solenoid valve, the source of the gas input of pilot solenoid valve is connected with power gas source, and pilot solenoid valve is also connected with PLC controller.
3. automatic ultrafiltration system according to claim 1, is characterized in that: described the first electric conductivity detector is connected with industrial touch control computer respectively with the second electric conductivity detector.
4. the hyperfiltration process of automatic ultrafiltration system claimed in claim 1 under constant transmembrane pressure, is characterized in that, comprises the steps:
(1) first by PLC controller, set constant transmembrane pressure and initial flow, ultrafiltration system brings into operation with initial flow, and the aperture of shutoff valve is 100%, treats that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, makes sample solution automatically fill with whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC controller reduces the aperture of shutoff valve according to the feedback signal of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, thereby transmembrane pressure increases gradually, the constant transmembrane pressure that the system of reaching sets, ultrafiltration system is with constant transmembrane pressure and flow continuous service;
(3) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, by filtrate collection container, collected, PLC controller can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters again shuttle through recycle control valve and carries out loop ultrafiltration, PLC controller, by regulating dope to discharge the opening and closing of control valve, carries out continuous collection or the batch collection of concentrate.
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| CN201310730213.5A CN103691322B (en) | 2013-12-26 | 2013-12-26 | A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure |
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| CN201310730213.5A CN103691322B (en) | 2013-12-26 | 2013-12-26 | A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823541A (en) * | 2017-03-30 | 2017-06-13 | 山东泰邦生物制品有限公司 | Nano-film filtration system and the application in removal product virus |
| CN111389228A (en) * | 2020-04-30 | 2020-07-10 | 江苏汉邦科技有限公司 | Adjustable hollow fiber ultrafiltration system |
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| US4381999A (en) * | 1981-04-28 | 1983-05-03 | Cobe Laboratories, Inc. | Automatic ultrafiltration control system |
| CN101069815A (en) * | 2007-03-30 | 2007-11-14 | 西安建筑科技大学 | Control device for fully-automatic constant-flow super-filtering water treatment |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN101890301A (en) * | 2010-07-09 | 2010-11-24 | 南京工业大学 | Air-lift membrane filtration complete equipment |
| CN102015076A (en) * | 2008-02-19 | 2011-04-13 | Abb研究有限公司 | On-line performance management of membrane separation process |
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2013
- 2013-12-26 CN CN201310730213.5A patent/CN103691322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381999A (en) * | 1981-04-28 | 1983-05-03 | Cobe Laboratories, Inc. | Automatic ultrafiltration control system |
| CN101069815A (en) * | 2007-03-30 | 2007-11-14 | 西安建筑科技大学 | Control device for fully-automatic constant-flow super-filtering water treatment |
| CN101125281A (en) * | 2007-06-12 | 2008-02-20 | 天津膜天膜工程技术有限公司 | Immersion type hollow fiber membrane separator and its running process |
| CN102015076A (en) * | 2008-02-19 | 2011-04-13 | Abb研究有限公司 | On-line performance management of membrane separation process |
| CN101890301A (en) * | 2010-07-09 | 2010-11-24 | 南京工业大学 | Air-lift membrane filtration complete equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823541A (en) * | 2017-03-30 | 2017-06-13 | 山东泰邦生物制品有限公司 | Nano-film filtration system and the application in removal product virus |
| CN106823541B (en) * | 2017-03-30 | 2022-12-23 | 山东泰邦生物制品有限公司 | Nano-membrane filtration system and application thereof in removing virus of product |
| CN111389228A (en) * | 2020-04-30 | 2020-07-10 | 江苏汉邦科技有限公司 | Adjustable hollow fiber ultrafiltration system |
| CN111389228B (en) * | 2020-04-30 | 2023-10-31 | 江苏汉邦科技股份有限公司 | Adjustable hollow fiber ultrafiltration system |
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