CN104888611A - Integrity detecting device for hollow fiber membrane component - Google Patents
Integrity detecting device for hollow fiber membrane component Download PDFInfo
- Publication number
- CN104888611A CN104888611A CN201510264009.8A CN201510264009A CN104888611A CN 104888611 A CN104888611 A CN 104888611A CN 201510264009 A CN201510264009 A CN 201510264009A CN 104888611 A CN104888611 A CN 104888611A
- Authority
- CN
- China
- Prior art keywords
- fixed resistance
- fixed
- hollow fiber
- integrity
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses an integrity detecting device for a hollow fiber membrane component. The integrity detecting device comprises a reactor, an aerating device and a water pump, wherein two pairs of platinum wire probes are arranged on a water feeding pipe connected with the water pump, and two circuits are connected onto a 5V power supply in parallel; each pair of platinum wire probes and one fixed resistor are connected onto the circuits in series, each resistor is also connected with a fixed capacitor in parallel, the two ends of each fixed resistor are connected with an acquisition card by guide lines, the acquisition cards acquire voltages at the two ends of the fixed resistors, are connected with a computer by data lines and judge the integrity of the hollow fiber membrane component according to the change of on-line-displayed voltages. The integrity detecting device disclosed by the invention has the advantages that according to the electric principle, the change of the voltages of the two ends of the fixed resistors is acquired by utilizing the data acquisition devices, and the integrity of the membrane component is judged according to the change rule of voltage signals; continuous on-line detection can be realized, not only is the sensitivity relatively high and is the operation stable, but also the economy is relatively good.
Description
Technical field
The invention belongs to membrane filtration processing technology field, relate to one and utilize electrical principles detection technique device.
Background technology
In water treatment procedure, hyperfiltration membrane assembly application is increasingly extensive, and this technology not only can remove colloidal solid in water body well, and can pathogenic microorganism in barrier water body effectively.But hollow fiber film assembly is once occur damaged in running, and consequence will be very serious, particularly not only can cause acute and chronic poisoning in Drinking Water process, also may cause the generation of epidemic disease.Therefore, how to detect the breakage of film timely and effectively, guarantee that film integrality is particularly important for drinking water safety, sewage qualified discharge etc.
Be born from water treatment by membrane, just along with the research of film integrality detection method, current film integrality detection method mainly contains direct and indirect integrality detection method, because the method step of direct-detection is loaded down with trivial details, operationally not easily realize, and be difficult to on-line checkingi, therefore indirect detection is subject to the extensive employing of professional and the recommendation of domestic and international authoritative institution in actual applications.
The water quality that indirect detection refers to by being detected drainage reflects the integrality of film, mainly comprise Turbidity measurement and granule counting method etc., turbidity size depends primarily on wavelength and granular size, shape and the composition of light, can not reflect the minor variations of water quality, and be vulnerable to the impact of underwater bubble; Grain count detection side rule is not suitable for dead-end filtration, because the bubble formed during backwash easily affects testing result.In addition, Central China University of Science and Technology scholar Wang Songlin adopts magnetic nanoparticle to be label, by measuring the magnetic susceptibility of hyperfiltration membrane assembly permeate, differentiates the integrality of each membrane module; Korea S scholar Soo Hoon Choi adopts fluorescence chromonic particles as label, analyzed by fluorogram, granular mass is flowed out in estimation, differentiate the integrality of membrane module, various method all has some limitations in actual applications above, and developing quick, accurate, sensitive, continuous, easy film integrality online test method has become one of focal issue of accurately application ultrafiltration membrane technique at present.
It is as follows according to electricity equation,
U＝I×R＝I×(R
1+R
2)
In above formula, U is circuit voltage, and I is circuital current, and R is circuit all-in resistance, R
1position variable resistor, R
2position fixed resistance, from equation, when circuit variable resistor changes, must cause the change of electric current, the corresponding change of fixed resistance both end voltage.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of can be quick, accurate, sensitive, and can the hollow fiber film assembly integrity detection device of continuous on-line detection film integrality.
Technical scheme of the present invention is summarized as follows:
A kind of hollow fiber film assembly integrity detection device, comprise reactor 20, aeration pump 15 is connected with gas flowmeter 13 and the aeration head 12 be positioned at bottom reactor 20 successively by pipeline; The delivery port of water pump 3 is connected with one end of outlet pipe 2, and the other end of outlet pipe 2 is positioned at the top of reactor 20; The water inlet of water pump 3 is connected with one end of water inlet pipe 4; Water inlet pipe 4 be provided with first pair of platinum filament probe 7 and second pair of platinum filament probe 5, first circuit 17 and second circuit 16 and be connected on the power supply 9 of 5V; First pair of platinum filament probe 7 and the first fixed resistance 8 are connected on the first circuit; First fixed capacity 22 is in parallel with the first fixed resistance 8; Second pair of platinum filament probe 5 and the second fixed resistance 6 are connected on second circuit; Second fixed capacity 21 is in parallel with the second fixed resistance 6; The two ends of the first fixed resistance 8 are connected by wire and capture card 11, the two ends of the second fixed resistance 6 are connected by wire and capture card 11, capture card 11 gathers the voltage at fixed resistance 6 two ends and the voltage at fixed resistance 8 two ends, and the signal that capture card collects to be connected with computer 10 by data wire and to judge hollow fiber film assembly integrality according to the change of Real time displaying voltage.
Hollow-fibre membrane integrity detection device of the present invention is according to electrical principles, data acquisition unit is utilized to gather the change of fixed resistance both end voltage, module integrity of membrane is judged according to voltage signal Changing Pattern, hollow fiber film assembly integrity detection device can realize continuous on-line detection, not only sensitivity is higher, stable, and economy is also better.
Accompanying drawing explanation
Fig. 1 is a kind of hollow fiber film assembly integrity detection device (not comprising the 1-submerged hollow fibre membrane module in bioreactor in figure) of the present invention
Fig. 2 is hollow fiber film assembly integrity detection device circuit figure of the present invention;
Fig. 3 is two pairs of platinum filament probe schematic diagrames on water inlet pipe 4.
Fig. 4 is that in complete film assembly operating process, magnitude of voltage is with the Changing Pattern of running time, and the preposition probe in figure is first pair of platinum filament probe, and rearmounted probe represents second pair of platinum filament probe.
Fig. 5 is that in damaged membrane module running, magnitude of voltage is with the Changing Pattern of running time, and the preposition probe in figure represents first pair of platinum filament probe, and rearmounted probe represents second pair of platinum filament probe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
A kind of hollow fiber film assembly integrity detection device, comprise reactor 20, aeration pump 15 is connected with gas flowmeter 13 and the aeration head 12 be positioned at bottom reactor 20 successively by pipeline; The delivery port of water pump 3 is connected with one end of outlet pipe 2, and the other end of outlet pipe 2 is positioned at the top of reactor 20; The water inlet of water pump 3 is connected with one end of water inlet pipe 4; Water inlet pipe 4 be provided with first pair of platinum filament probe 7 and second pair of platinum filament probe 5, first circuit 17 and second circuit 16 and be connected on the power supply 9 of 5V; First pair of platinum filament probe 7 and the first fixed resistance 8 are connected on the first circuit; First fixed capacity 22 is in parallel with the first fixed resistance 8; Second pair of platinum filament probe 5 and the second fixed resistance 6 are connected on second circuit; Second fixed capacity 21 is in parallel with the second fixed resistance 6; The two ends of the first fixed resistance 8 are connected by wire and capture card 11, the two ends of the second fixed resistance 6 are connected by wire and capture card 11, capture card 11 gathers the voltage at fixed resistance 6 two ends and the voltage at fixed resistance 8 two ends, and the signal that capture card collects is connected with computer 10 by data wire.
Fig. 2 is shown in by the circuit diagram of device of the present invention, and the R1 in Fig. 2 is the first fixed resistance 8; R2 is the second fixed resistance 6; C1 is the first fixed capacity 22; C2 is the second fixed capacity 21.A, b are two platinum filament probes of first pair of platinum filament probe 7, and c, d are two platinum filament probes of second pair of platinum filament probe 5.
Two pairs of platinum filament probes on water inlet pipe 4 shown in Fig. 3.
Illustrate that device of the present invention detects hollow fiber film assembly integrality below
Embodiment 1
The other end of the water inlet pipe 4 of hollow fiber film assembly integrity detection device and submerged hollow fibre membrane module in bioreactor 1 are coupled together; This membrane module is built by 200 PVDF hollow fiber film threads to form, and film silk external diameter is 1.2mm, and filling electrical conductivity in reactor is 0.65 × 10
4the seawater of μ S/cm, water pump 3 is Lange BT-100 type peristaltic pump, and rotating speed is 60, and aeration intensity is 10L/min; First fixed resistance 8 and the second fixed resistance 6 are 100 Ω; First fixed capacity 22 and the second fixed capacity 21 are 470uF; Capture card 11 model is USB-1208FS.
After having connected, start power supply, then start after peristaltic pump (water pump 3) etc. runs to and do not have bubble in water inlet pipe 4 and hollow fiber film assembly, start aeration pump.
When membrane module is complete, the voltage signal collected is as Fig. 4, and due to the interference of water quality and circuit noise, signal fluctuates within the scope of 0.02V; People, for cutting off a film silk, collects voltage signal change as shown in Figure 5, and when bubble is by probe, the voltage signal change collecting fixed resistance two ends shows in Figure 5, and then can judge membrane module breakage by observation signal fluctuation range.
Hollow fiber film assembly integrity detection device is when detecting, and when former water passes through first pair of platinum filament probe 7 and second pair of platinum filament probe 5 of water inlet pipe 4 inside after submerged hollow fibre membrane module in bioreactor, form path, water outlet is equivalent to variable resistor R
1, under normal operating conditions, membrane module is without breakage, and water outlet conductivity change is less, and corresponding voltage change is also less; Aeration produces countless minute bubbles in the reactor, and when membrane module occurs damaged, bubble will enter water inlet pipe 4 by film silk breakage, and when bubble is by probe, little due to bubble Conductivity Ratio water, cause resistance to become large, corresponding fixed resistance both end voltage diminishes.Thus by observing voltage signal Changing Pattern, judge whether membrane module occurs breakage.Device of the present invention is suitable for the higher field of the water electric conductivities such as seawater desalinization pretreatment, with the sensitivity of assurance device, if water electric conductivity is lower, the resistance variations that bubble is caused by probe is too little, corresponding fixed resistance both end voltage change is also very little, affect the sensitivity of device, so electrolyte suitably should be added improve the former electrical conductivity of water of process.
Claims (1)
1. a hollow fiber film assembly integrity detection device, comprise reactor (20), aeration pump (15) is connected with gas flowmeter (13) and the aeration head (12) be positioned at bottom reactor (20) successively by pipeline; The delivery port of water pump (3) is connected with one end of outlet pipe (2), and the other end of outlet pipe (2) is positioned at the top of reactor (20); The water inlet of water pump (3) is connected with one end of water inlet pipe (4); Water inlet pipe (4) is provided with first pair of platinum filament probe (7) and second pair of platinum filament probe (5), the first circuit (17) and second circuit (16) are also connected on the power supply (9) of 5V; Described first pair of platinum filament probe (7) and the first fixed resistance (8) are connected on the first circuit; First fixed capacity (22) is in parallel with the first fixed resistance (8); Described second pair of platinum filament probe (5) and the second fixed resistance (6) are connected on second circuit; Second fixed capacity (21) is in parallel with the second fixed resistance (6); The two ends of the first fixed resistance (8) are joined by wire and capture card (11) and connect, the two ends of the second fixed resistance (6) are joined by wire and capture card (11) and connect, capture card (11) gathers the voltage at fixed resistance (6) two ends and the voltage at fixed resistance (8) two ends, and the signal that capture card collects is connected with computer (10) by data wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510264009.8A CN104888611B (en) | 2015-05-21 | 2015-05-21 | A kind of hollow fiber film assembly integrity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510264009.8A CN104888611B (en) | 2015-05-21 | 2015-05-21 | A kind of hollow fiber film assembly integrity detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104888611A true CN104888611A (en) | 2015-09-09 |
| CN104888611B CN104888611B (en) | 2016-10-05 |
Family
ID=54021821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510264009.8A Active CN104888611B (en) | 2015-05-21 | 2015-05-21 | A kind of hollow fiber film assembly integrity detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104888611B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771668A (en) * | 2016-05-07 | 2016-07-20 | 天津工业大学 | Device for detecting completeness of hollow fibrous membrane component and detection method thereof |
| CN106731862A (en) * | 2016-12-09 | 2017-05-31 | 天津工业大学 | A kind of hollow fiber film assembly integrality on-line measuring device and detection method |
| CN107117723A (en) * | 2017-04-24 | 2017-09-01 | 葛洲坝水务投资有限公司 | Accurate type micro-pore aerator installation, detecting system and installation and detection method |
| CN108169232A (en) * | 2018-02-14 | 2018-06-15 | 天津工业大学 | A kind of laser dijection sensor for being used to evaluate hollow-fibre membrane backwash effect |
| CN110038441A (en) * | 2019-05-22 | 2019-07-23 | 天津工业大学 | The on-line detecting system of module integrity of membrane in a kind of doughnut membrane filtration processes |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349253A (en) * | 2004-06-08 | 2005-12-22 | Kurita Water Ind Ltd | Membrane treatment apparatus and membrane breakage detection method |
| JP2006082054A (en) * | 2004-09-17 | 2006-03-30 | Kurita Water Ind Ltd | Membrane breakage detecting method |
| JP2006110464A (en) * | 2004-10-14 | 2006-04-27 | Kurita Water Ind Ltd | Membrane treatment apparatus |
| JP2007152285A (en) * | 2005-12-07 | 2007-06-21 | Kurita Water Ind Ltd | Liquid treatment method and apparatus |
| CN101065178A (en) * | 2004-11-29 | 2007-10-31 | Otv股份有限公司 | Electrokinetic method for determining the electrostatic charge state of a porous membrane during filtering and the use thereof |
| CN101376084A (en) * | 2007-08-27 | 2009-03-04 | 株式会社日立制作所 | Membrane filtration device and membrane damage detection method of membrane filtration device |
| JP2011020047A (en) * | 2009-07-15 | 2011-02-03 | Toraitekku:Kk | Method and apparatus for detecting membrane defect, and membrane module |
| CN102512969A (en) * | 2011-11-24 | 2012-06-27 | 兰州交通大学 | Synchronous measurement device for streaming potential of hollow fiber membrane mask hole |
| CN103688147A (en) * | 2011-07-19 | 2014-03-26 | 三菱丽阳株式会社 | Defect inspection system and defect inspection method for porous hollow fiber membranes, porous hollow fiber membrane, and method for producing porous hollow fiber membrane |
| CN104162368A (en) * | 2014-07-30 | 2014-11-26 | 江苏大学 | Method and apparatus for detecting membrane damage based on electrochemistry and magnetic bead technology |
-
2015
- 2015-05-21 CN CN201510264009.8A patent/CN104888611B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349253A (en) * | 2004-06-08 | 2005-12-22 | Kurita Water Ind Ltd | Membrane treatment apparatus and membrane breakage detection method |
| JP2006082054A (en) * | 2004-09-17 | 2006-03-30 | Kurita Water Ind Ltd | Membrane breakage detecting method |
| JP2006110464A (en) * | 2004-10-14 | 2006-04-27 | Kurita Water Ind Ltd | Membrane treatment apparatus |
| CN101065178A (en) * | 2004-11-29 | 2007-10-31 | Otv股份有限公司 | Electrokinetic method for determining the electrostatic charge state of a porous membrane during filtering and the use thereof |
| JP2007152285A (en) * | 2005-12-07 | 2007-06-21 | Kurita Water Ind Ltd | Liquid treatment method and apparatus |
| CN101376084A (en) * | 2007-08-27 | 2009-03-04 | 株式会社日立制作所 | Membrane filtration device and membrane damage detection method of membrane filtration device |
| JP2011020047A (en) * | 2009-07-15 | 2011-02-03 | Toraitekku:Kk | Method and apparatus for detecting membrane defect, and membrane module |
| CN103688147A (en) * | 2011-07-19 | 2014-03-26 | 三菱丽阳株式会社 | Defect inspection system and defect inspection method for porous hollow fiber membranes, porous hollow fiber membrane, and method for producing porous hollow fiber membrane |
| CN102512969A (en) * | 2011-11-24 | 2012-06-27 | 兰州交通大学 | Synchronous measurement device for streaming potential of hollow fiber membrane mask hole |
| CN104162368A (en) * | 2014-07-30 | 2014-11-26 | 江苏大学 | Method and apparatus for detecting membrane damage based on electrochemistry and magnetic bead technology |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771668A (en) * | 2016-05-07 | 2016-07-20 | 天津工业大学 | Device for detecting completeness of hollow fibrous membrane component and detection method thereof |
| CN105771668B (en) * | 2016-05-07 | 2018-03-27 | 天津工业大学 | A kind of hollow fiber film assembly integrity detection device and its detection method |
| CN106731862A (en) * | 2016-12-09 | 2017-05-31 | 天津工业大学 | A kind of hollow fiber film assembly integrality on-line measuring device and detection method |
| CN106731862B (en) * | 2016-12-09 | 2019-04-23 | 天津工业大学 | A kind of hollow fiber film assembly integrality on-line measuring device and detection method |
| CN107117723A (en) * | 2017-04-24 | 2017-09-01 | 葛洲坝水务投资有限公司 | Accurate type micro-pore aerator installation, detecting system and installation and detection method |
| CN107117723B (en) * | 2017-04-24 | 2020-10-30 | 葛洲坝水务投资有限公司 | Accurate pipe type microporous aerator installation and detection system and installation and detection method |
| CN108169232A (en) * | 2018-02-14 | 2018-06-15 | 天津工业大学 | A kind of laser dijection sensor for being used to evaluate hollow-fibre membrane backwash effect |
| CN110038441A (en) * | 2019-05-22 | 2019-07-23 | 天津工业大学 | The on-line detecting system of module integrity of membrane in a kind of doughnut membrane filtration processes |
| CN110038441B (en) * | 2019-05-22 | 2023-10-24 | 天津工业大学 | On-line detection system for membrane assembly integrity in hollow fiber membrane filtration process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104888611B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104888611B (en) | A kind of hollow fiber film assembly integrity detection device | |
| CN202599852U (en) | Identification and measurement device of bubbles in gas-liquid two-phase bubble flow | |
| CN100561211C (en) | A kind of ammonia test method and device | |
| US20010003426A1 (en) | Method and device for oil-in-water measurement | |
| KR101621737B1 (en) | Measuring device for quality of tap water | |
| CN103471502A (en) | Device and method for detecting volume of gas-liquid two-phase flow bubbles | |
| CN109507264B (en) | Automatic Zeta potential detector for membrane surface | |
| CN103383296A (en) | Leakage detecting system for condensers | |
| JP4591703B2 (en) | Liquid processing method and apparatus | |
| CN207051233U (en) | A kind of simple online electrical conductivity detection servicing unit | |
| CN108562635A (en) | A kind of fouling membrane in-situ monitoring device based on Zeta potential and Electrical Impedance Spectroscopy technology | |
| CN203745413U (en) | Marine hydraulic pipeline cleaning oil on-line detection device | |
| CN210604487U (en) | Conductivity and hydrogen conductivity cooperative measurement system | |
| CN106291119A (en) | A kind of conductivity measuring method, circuit and conductance instrument | |
| CN105911109A (en) | Method for online measurement of dissolved oxygen in water, and apparatus thereof | |
| CN103743793A (en) | Online detection device for hydraulic pipeline washing oil for ship | |
| CN103278432B (en) | A kind of pick-up unit of integrity of filtration membranes and detection method thereof | |
| CN206960462U (en) | A kind of seawater quality optics on-line monitoring system | |
| CN105771668B (en) | A kind of hollow fiber film assembly integrity detection device and its detection method | |
| CN206208340U (en) | Condensate tank of dehumidifier | |
| CN203534860U (en) | Aquatic-plant-proof fish lead for hydrology monitoring | |
| CN207866647U (en) | A kind of forward osmosis membrane test device | |
| CN103591901A (en) | Gas and liquid two-phase flow bubble diameter detection method | |
| CN211292685U (en) | Multi-parameter water quality measuring system | |
| CN211627444U (en) | In-situ online electrochemical spectroscopy monitoring device for ion exchange membrane pollution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |