CN103657415B - The hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure - Google Patents
The hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure Download PDFInfo
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- CN103657415B CN103657415B CN201310730179.1A CN201310730179A CN103657415B CN 103657415 B CN103657415 B CN 103657415B CN 201310730179 A CN201310730179 A CN 201310730179A CN 103657415 B CN103657415 B CN 103657415B
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Abstract
The invention discloses the hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure, comprise the steps: that (1) is by the PLC super initial point of setting and the transmembrane pressure value of end point, initial flow and running time, ultrafiltration system brings into operation with initial flow, shutoff valve aperture is 100%, treat that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, make sample solution automatically fill whole system; (2) keep the constant flow rate of ultrafiltration system constant, reduce the aperture of shutoff valve, transmembrane pressure increases gradually, reaches the transmembrane pressure of the starting point set by system; (3) change the aperture of shutoff valve, realize the linear change of transmembrane pressure value, systems stay runs the transmembrane pressure value reaching end point; (4) filtrate is collected by filtrate collection container, and backflow sample solution carries out loop ultrafiltration, and concentrate is collected or batch collection continuously.Present invention achieves the linear transmembrane pressure of ultrafiltration system, improve sample film transmitance, sample yield and ultrafiltration efficiency.
Description
Technical field
The present invention relates to a kind of ultrafiltration system, particularly the hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure.
Background technology
Ultrafiltration is a kind of is separation principle with screening, take pressure as the membrane separating process of motive force, filtering accuracy, within the scope of 0.005-0.01 μm, effectively can remove the particulate in water, colloid, bacterium, thermal source and macromolecule organic matter, 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 ultra-filtration conditions, film transmitance and sample yield low, 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 hyperfiltration process of automatic ultrafiltration system under linear 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: the hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure, wherein, this hyperfiltration process automatic ultrafiltration system used comprises membrane pump, milipore filter bag and PLC, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, milipore filter bag has inlet, liquid outlet and liquid return hole, the first pressure sensor is connected with between the port of export and the inlet of milipore filter bag of membrane pump, the liquid return hole of milipore filter bag is connected with the second pressure sensor, 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, lead up to after recycle control valve and enter shuttle, dope of separately leading up to enters a dope collection container after discharging control valve, the liquid outlet of milipore filter bag is connected with the 3rd pressure sensor and the second electric conductivity detector successively and is connected with filtrate collection container afterwards, servomotor, first pressure sensor, second pressure sensor, 3rd pressure sensor and shutoff valve are connected with described PLC respectively, this hyperfiltration process comprises the following steps:
(1) first by the PLC super initial point of setting and the transmembrane pressure value of end point, initial flow and running time, ultrafiltration system brings into operation with initial flow, the aperture of shutoff valve is 100%, treat that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, make sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC 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, thus transmembrane pressure increases gradually, reach the transmembrane pressure of the starting point set by system;
(3) PLC is according to the aperture of the feedback signal change shutoff valve of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, and realize the linear change of transmembrane pressure value, systems stay runs the transmembrane pressure value reaching end point;
(4) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, collected by filtrate collection container, PLC can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters shuttle again through recycle control valve and carries out loop ultrafiltration, PLC, by the opening and closing regulating dope to discharge control valve, carries out continuous collection or the batch collection of concentrate.
Further, recycle control valve in the automatic ultrafiltration system that this hyperfiltration process is used, dope are discharged control valve and are connected pilot solenoid valve respectively, the air source input end of pilot solenoid valve connects power gas source, pilot solenoid valve is also connected with PLC, PLC controls the opening and closing of pilot solenoid valve, realize the supply of power gas source, thus the opening and closing of recycle control valve, dope discharge control valve are controlled.
Further, the first described electric conductivity detector is connected with industrial touch control computer respectively with the second electric conductivity detector, Real-Time Monitoring is carried out to solution conductivity value.
Compared with prior art, the present invention has the following advantages:
(1) hyperfiltration process of the present invention on traditional ultrafiltration system basis, only can need be equipped with a membrane pump and milipore filter bag, can realize whole ultra-filtration process;
(2) hyperfiltration process under linear transmembrane pressure provided by the invention can pass through the optimum configurations of simple 2 transmembrane pressures by the software that PLC is built-in, realizes linear transmembrane pressure.PLC can control two point Linear transmembrane pressures automatically, shutoff valve aperture and pump discharge is regulated according to three pressure sensors that milipore filter bag connects, reach the transmembrane pressure of linear change, realize the ultra-filtration process of linear transmembrane pressure, improve ultrafiltration efficiency, compared to existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%;
(3) system can cut circulation and the sample collection that valve realizes system stream automatically, can also pass through electric conductivity detector, Real-Time Monitoring solution conductivity value, grasps ultrafiltration schedule in real time, conveniently processes the sample filtered.
Accompanying drawing explanation
The structural representation of the automatic ultrafiltration system that Fig. 1 uses for hyperfiltration process of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
As shown in Figure 1, the hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure, wherein, this hyperfiltration process automatic ultrafiltration system used comprises membrane pump 1, milipore filter bag 3 and PLC 15, membrane pump 1 is driven by servomotor 2, the arrival end of membrane pump 1 connects a shuttle 12, milipore filter bag 3 has inlet 31, liquid outlet 33 and liquid return hole 32, the first pressure sensor 4 is connected with between the port of export and the inlet 31 of milipore filter bag 3 of membrane pump 1, the liquid return hole 32 of milipore filter bag 3 is connected with the second pressure sensor 5, 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, lead up to after recycle control valve 9 and enter shuttle 12, dope of separately leading up to enters a dope collection container 14 after discharging control valve 8, the liquid outlet 33 of milipore filter bag 3 is connected with the 3rd pressure sensor 6 and the second electric conductivity detector 11 successively and is connected with filtrate collection container 13 afterwards, servomotor 2, first pressure sensor 4, second pressure sensor 5, 3rd pressure sensor 6 and shutoff valve 7 are connected with described PLC 15 respectively.
This hyperfiltration process comprises the following steps:
(1) the transmembrane pressure value of the PLC 15 super initial point of setting and end point, initial flow and running time is first passed through, ultrafiltration system brings into operation with initial flow, the aperture of shutoff valve 7 is 100%, treat that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump 1, make sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC 15 reduces the aperture of shutoff valve 7 according to the feedback signal of the first pressure sensor 4, second pressure sensor 5 and the 3rd pressure sensor 6, thus transmembrane pressure increases gradually, reach the transmembrane pressure of the starting point set by system;
(3) PLC 15 is according to the aperture of the feedback signal change shutoff valve 7 of the first pressure sensor 4, second pressure sensor 5 and the 3rd pressure sensor 6, and realize the linear change of transmembrane pressure value, systems stay runs the transmembrane pressure value reaching end point;
(4) filtrate after ultrafiltration is after the liquid outlet 33 of milipore filter bag 3 is discharged, collected by filtrate collection container 13, PLC 15 can regulate opening or closing of recycle control valve 9, when opening recycle control valve 9, backflow sample solution enters shuttle 12 again through recycle control valve 9 and carries out loop ultrafiltration, PLC 15, by the opening and closing regulating dope to discharge 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 and is in closed condition, when concentrate is concentrated to certain degree, open dope by PLC 15 and discharge control valve 8, concentrate enters dope collection container 14 by pipeline and collects continuously.In addition, also can in shuttle 12 after the complete ultrafiltration of ultrafiltration sample solution terminates, PLC 15 controls to open dope again and discharges control valve 8, carries out the batch collection of concentrate.
Recycle control valve 9, dope are discharged control valve 8 and are connected to pilot solenoid valve 17, and the air source input end of pilot solenoid valve 17 is connected with power gas source, and pilot solenoid valve 17 is also connected with PLC 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 15 controls the opening and closing of pilot solenoid valve 17, thus controls entering of power gas source, and then controls the opening and closing of recycle control valve 9 and dope discharge control valve 8.
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, grasps ultrafiltration schedule in real time, conveniently processes the sample filtered.
The present invention can carry out the optimum configurations of 2 transmembrane pressures by the software that PLC 15 is built-in, PLC 15 regulates aperture and the pump discharge of shutoff valve 7 according to three pressure sensors that milipore filter bag 3 connects, realize linear transmembrane pressure, obtain the most rational ultra-filtration conditions, realize the ultra-filtration process of linear transmembrane pressure, improve ultrafiltration efficiency, compared to existing ultrafiltration system, ultrafiltration efficiency can improve 30-50%.Automatic ultrafiltration system of the present invention can be used for various ultrafiltration, desalination, purifies, concentrated application and system pilot scale and production level scale.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; 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 (3)
1. the hyperfiltration process of an automatic ultrafiltration system under linear transmembrane pressure, wherein, this hyperfiltration process automatic ultrafiltration system used comprises membrane pump, milipore filter bag and PLC, membrane pump passes through driven by servomotor, the arrival end of membrane pump connects a shuttle, milipore filter bag has inlet, liquid outlet and liquid return hole, the first pressure sensor is connected with between the port of export and the inlet of milipore filter bag of membrane pump, the liquid return hole of milipore filter bag is connected with the second pressure sensor, 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, lead up to after recycle control valve and enter shuttle, dope of separately leading up to enters a dope collection container after discharging control valve, the liquid outlet of milipore filter bag is connected with the 3rd pressure sensor and the second electric conductivity detector successively and is connected with filtrate collection container afterwards, servomotor, first pressure sensor, second pressure sensor, 3rd pressure sensor and shutoff valve are connected with described PLC respectively, it is characterized in that, hyperfiltration process comprises the following steps:
(1) first by the PLC super initial point of setting and the transmembrane pressure value of end point, initial flow and running time, ultrafiltration system brings into operation with initial flow, the aperture of shutoff valve is 100%, treat that ultrafiltration sample solution pumps into ultrafiltration system by membrane pump, make sample solution automatically fill whole system;
(2) keep the constant flow rate of ultrafiltration system constant, PLC 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, thus transmembrane pressure increases gradually, reach the transmembrane pressure of the starting point set by system;
(3) PLC is according to the aperture of the feedback signal change shutoff valve of the first pressure sensor, the second pressure sensor and the 3rd pressure sensor, and realize the linear change of transmembrane pressure value, systems stay runs the transmembrane pressure value reaching end point;
(4) filtrate after ultrafiltration is after the liquid outlet of milipore filter bag is discharged, collected by filtrate collection container, PLC can regulate opening or closing of recycle control valve, when opening recycle control valve, backflow sample solution enters shuttle again through recycle control valve and carries out loop ultrafiltration, PLC, by the opening and closing regulating dope to discharge control valve, carries out continuous collection or the batch collection of concentrate.
2. the hyperfiltration process of a kind of automatic ultrafiltration system according to claim 1 under linear transmembrane pressure, it is characterized in that: the recycle control valve in the automatic ultrafiltration system that this hyperfiltration process is used, dope are discharged control valve and connected pilot solenoid valve respectively, the air source input end of pilot solenoid valve connects power gas source, pilot solenoid valve is also connected with PLC, PLC controls the opening and closing of pilot solenoid valve, realize the supply of power gas source, thus the opening and closing of recycle control valve, dope discharge control valve are controlled.
3. the hyperfiltration process of a kind of automatic ultrafiltration system according to claim 1 under linear transmembrane pressure, it is characterized in that: the first described electric conductivity detector is connected with industrial touch control computer respectively with the second electric conductivity detector, Real-Time Monitoring is carried out to solution conductivity value.
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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 |
| CN201020343Y (en) * | 2006-12-20 | 2008-02-13 | 华南理工大学 | Multi-stage hyper-filtering concentration separation automatic control device |
| CN203043849U (en) * | 2012-11-16 | 2013-07-10 | 湖州德翔环境科技有限公司 | Self-control ultrafiltration system |
| CN103298542A (en) * | 2010-10-15 | 2013-09-11 | 艾克塞勒雷克斯公司 | Large volume disposable ultrafiltration systems and methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE79300T1 (en) * | 1984-11-15 | 1992-08-15 | Baxter Int | ADAPTABLE CONTROL SYSTEM AND METHOD FOR FILTER CONCENTRATE FLOW. |
| AU2008350849B2 (en) * | 2008-02-19 | 2012-06-21 | Abb Schweiz Ag | On-line performance management of membrane separation process |
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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 |
| CN201020343Y (en) * | 2006-12-20 | 2008-02-13 | 华南理工大学 | Multi-stage hyper-filtering concentration separation automatic control device |
| 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 |
| CN103298542A (en) * | 2010-10-15 | 2013-09-11 | 艾克塞勒雷克斯公司 | Large volume disposable ultrafiltration systems and methods |
| CN203043849U (en) * | 2012-11-16 | 2013-07-10 | 湖州德翔环境科技有限公司 | Self-control ultrafiltration system |
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