CN101013077A - low-pressure test system of seawater reverse osmosis membrane performance and test method thereof - Google Patents
low-pressure test system of seawater reverse osmosis membrane performance and test method thereof Download PDFInfo
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- CN101013077A CN101013077A CN 200710056656 CN200710056656A CN101013077A CN 101013077 A CN101013077 A CN 101013077A CN 200710056656 CN200710056656 CN 200710056656 CN 200710056656 A CN200710056656 A CN 200710056656A CN 101013077 A CN101013077 A CN 101013077A
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Abstract
A seawater reverse osmosis membrane performance low-pressure test system and test method comprises the circulating water tank water-output, the first valve, the centrifugal pump, the second valve, the first pressure gauge, the security filter, and the second pressure gauge, connected in series through the pipeline; the other end of the second pressure gauge connects the third valves and the fourth valve through pipeline; the other end of the fourth valve connects the sixth valve, the first flow meter import through the pipeline, and the output of the first flow meter reaching to the circulating water tank water input through the pipeline; the other end of the third valve respectively connecting the pressure shell and the fifth valve through the pipeline; the other end of the fifth valve connecting with the first flow meter input through a pipeline; one output of the pressure shell connects the sixth valve, the entrance of the first flow meter in series through the pipeline, the other end of the pressure shell export connecting the second flow meter and the circulating water tank input through the pipeline. The invention achieves the convenient, fast and accurate measurement of seawater reverse osmosis membrane components performance under the low pressure conditions.
Description
Technical field
The present invention relates to a kind of reverse osmosis membrane performance test macro.Particularly relate to a kind of low-pressure test system of seawater reverse osmosis membrane performance and method of testing thereof that accurately detects high pressure sea water reverse osmosis membrane assembly salt rejection rate and water production rate that below the low pressure condition, reach just, fast.
Background technology
Method for desalting seawater mainly is divided into Re Fa and embrane method two big classes, and embrane method typically refers to reverse osmosis.Because the reduction of development of technology and cost, reverse osmosis seawater desalting development are rapidly, the domestic and international market share constantly increases.Reverse osmosis membrane is the critical component and the core technology of embrane method desalinization, and reverse osmosis membrane assembly is a standard size, corresponding different water production rate and the salt rejection rates of different model when dispatching from the factory.In a large-scale reverse osmosis desalinization system, rearrange membrane stack by various membrane modules according to designing and calculating and reach needed water production rate, the duty of the membrane module of diverse location is different in system.Along with the counter-infiltration system growth of working time, each reverse osmosis membrane assembly performance is along with the difference of duty and contaminated degree has some reductions in various degree, tackling the serious reverse osmosis membrane that descends of some salt rejection rates and water production rate in case of necessity changes, and the counter-infiltration system in the desalinization engineering can only reflect the water production rate and the salt rejection rate of whole membrane stack, and can't determine the actual performance of single membrane component, like this after the entire system performance descends, all reverse osmosis membranes have to be changed, comprise wherein good reverse osmosis membrane.Do like this and just caused unnecessary waste.
For fear of this blindness; need the performance of single film be detected; yet the working pressure of seawater reverse osmosis membrane is generally 5.5-6.5MPa; that is to say that seawater reverse osmosis membrane is under the condition of seawater medium; so high pressure must be applied and just its performance can be reflected; and for diaphragm is not subjected to the direct impact failure of high pressure, the pressure that advances film during the device start and stop must slowly change, so proving installation cost height, test process complexity.
Summary of the invention
Technical matters to be solved by this invention is that a kind of low-pressure test system of seawater reverse osmosis membrane performance and method of testing thereof that accurately detects high pressure sea water reverse osmosis membrane assembly salt rejection rate and water production rate that reach just, fast below the low pressure condition is provided.
The technical solution adopted in the present invention is: a kind of low-pressure test system of seawater reverse osmosis membrane performance and method of testing thereof, test macro wherein, including cyclic water tank, centrifugal pump, the 1st tensimeter, the 2nd tensimeter, security personnel's filtrator, pressure housing, the 1st flowmeter, the 2nd flowmeter, the 1st to the 6th valve and pipeline constitutes, wherein, the water side of cyclic water tank, the 1st valve, centrifugal pump, the 2nd valve, the 1st tensimeter, security personnel's filtrator, the 2nd tensimeter are connected in series successively by pipeline; The 2nd manometric other end connects the 3rd valve and the 4th valve respectively by pipeline; The inlet end of the other end of the 4th valve and the 6th valve, the 1st flowmeter is connected in series successively by pipeline, and the endpiece of the 1st flowmeter is by the water intake end of pipeline to cyclic water tank; The other end of the 3rd valve connects pressure housing and the 5th valve by pipeline respectively again; The other end of the 5th valve connects the inlet end of the 1st flowmeter by pipeline; The inlet end of flow export of pressure housing and the 6th valve, the 1st flowmeter is connected in series successively by pipeline, and another flow export of pressure housing is by pipeline and the 2nd flowmeter water intake end to cyclic water tank.
Be provided with filtering accuracy in described security personnel's filtrator and be 5 microns filter core.
A kind of as in counter-infiltration product water and the tap water of the former water that described test macro uses.
The water that flow export flowed out of the described pressure housing that is connected with the 2nd flowmeter is the product water that sees through reverse osmosis membrane.
The water that flow export flowed out of the described pressure housing that is connected with valve, the 1st flowmeter is the dense water that does not see through reverse osmosis membrane.
When closing the 4th, the 5th valve, when opening the 3 6th valve, reverse osmosis membrane is carried out the forward flushing; When closing the 3 6th valve, when opening the 4th, the 5th valve, reverse osmosis membrane is carried out counterflush.
Described test macro adopts sonde method to measure the distribution of the inner salt rejection rate of reverse osmosis membrane assembly, determines the position of diaphragm defect point.
Seawater reverse osmosis membrane performance low voltage experiment method is to adopt low-pressure test system of seawater reverse osmosis membrane performance, finishes as follows:
1) in cyclic water tank, fills with counter-infiltration product water or tap water, seawater reverse osmosis membrane element to be detected is packed in the pressure housing, close the 2nd, the 3rd and the 6th valve, open the 1st, the 4th and the 5th valve;
2) start centrifugal pump, slowly open the 2nd valve then, until maximum, counterflush seawater reverse osmosis membrane element also discharged 3-5 minute;
3) close the 4th and the 5th valve, open the 3rd and the 6th valve, forward flushing seawater reverse osmosis membrane element also discharged 3-5 minute;
4) slowly regulate the 6th valve, the 1st, the 2nd pressure tabular value is risen, until there being fresh water to produce in fresh water line, dense, fresh water refluxes;
5) read the reading of the 2nd flowmeter after 10 minutes, measure fresh water water sample conductivity, write down and calculate the water production rate and the salt rejection rate of single membrane module.
Low-pressure test system of seawater reverse osmosis membrane performance of the present invention and method of testing thereof, can be under low pressure (0.5MPa) condition be that the main performance of the seawater reverse osmosis membrane of 5.5-6.5MPa is carried out convenient, fast and measured accurately to the actual motion condition.Can also realize the brute force to polluted membrane, efficient flushing with this method.Problem is detected at the scene of adopting this method can solve nucleus equipment reverse-osmosis membrane element in the large-scale desalinization engineering, for system's operation maintenance provides reliable foundation.
Description of drawings
Fig. 1 is a system architecture synoptic diagram of the present invention.
Wherein:
1: cyclic water tank 2,4,8,9,10,12: the 1 to the 6th valves
3: 5: the 1 tensimeters of centrifugal pump
6: 7: the 2 tensimeters of security personnel's filtrator
11: 13: the 1 flowmeters of pressure housing
14: the 2 flowmeters
Embodiment
Below in conjunction with embodiment low-pressure test system of seawater reverse osmosis membrane performance of the present invention and method of testing thereof are made a detailed description.
As shown in Figure 1, low-pressure test system of seawater reverse osmosis membrane performance of the present invention, include cyclic water tank 1, also be provided with centrifugal pump the 3, the 1st tensimeter the 5, the 2nd tensimeter 7, security personnel's filtrator 6, pressure housing the 11, the 1st flowmeter the 13, the 2nd flowmeter the 14, the 1st to the 6th valve 2,4,8,9,10,12 and pipeline and constitute.Wherein, the water side of cyclic water tank 1, the 1st valve 2, centrifugal pump the 3, the 2nd valve the 4, the 1st tensimeter 5, security personnel's filtrator the 6, the 2nd tensimeter 7 is connected in series successively by pipeline; The other end of the 2nd tensimeter 7 connects the 3rd valve 8 and the 4th valve 9 respectively by pipeline; The inlet end of the other end of the 4th valve 9 and the 6th valve the 12, the 1st flowmeter 13 is connected in series successively by pipeline, and the endpiece of the 1st flowmeter 13 is by the water intake end of pipeline to cyclic water tank 1; The other end of the 3rd valve 8 connects pressure housing 11 and the 5th valve 10 by pipeline respectively again; The other end of the 5th valve 10 connects the inlet end of the 1st flowmeter 13 by pipeline; The flow export of pressure housing 11 and the inlet end of the 6th valve the 12, the 1st flowmeter 13 are connected in series successively by pipeline, and another flow export of pressure housing 11 is by pipeline and the 2nd flowmeter 14 water intake end to cyclic water tank 1.Be provided with filtering accuracy in above-mentioned security personnel's filtrator 6 and be 6～4 microns filter core.
Connecting line, valve materials all in this test macro are UPVC.Pressure shell adopts the structure of side water inlet, side water outlet, and the two ends end plate requires convenient disassembly.
The centrifugal pump flow supporting with 8 inches reverse osmosis membranes of detection is 15m
3/ h, lift are 50 meters.The 2nd valve 4 of centrifugal pump outlet is used for regulating flow and the pressure that enters reverse osmosis membrane.The 5th valve 10 or the 6th valve 12 are used for regulating the flow of dense water.
Employed former water is a kind of in counter-infiltration product water and the tap water in this test macro.And the water that flow export flowed out of the pressure housing 11 that is connected with the 2nd flowmeter 14 in the test macro is to see through a kind of in the product water of reverse osmosis membrane and the tap water; The water that flow export flowed out of the pressure housing 11 that is connected with valve the 12, the 1st flowmeter 13 is the dense water that does not see through reverse osmosis membrane.
This test macro adapts to the flushing and the detection of bitter reverse osmosis membrane and NF membrane equally.
This test macro can also be used to washing reverse osmosis membrane.Promptly before test with the dense aquaporin of the contaminated film of big flow water strong flushing, from the two ends of pressure shell reverse osmosis membrane is carried out the flushing of positive and negative both direction respectively by the combination of valve, when closing the 4th, the 5th valve 9,10, opened the 3 6th valve at 8,12 o'clock, reverse osmosis membrane is carried out the forward flushing; When closing the 3 6th valve 8,12, opened the 4th, the 5th valve at 9,10 o'clock, reverse osmosis membrane is carried out counterflush
Described test macro adopts sonde method to measure the distribution of the inner salt rejection rate of reverse osmosis membrane assembly, determines the position of diaphragm defect point.
Principle of work of the present invention is: centrifugal pump 3 fetch water from cyclic water tank 1 (counter-infiltration product water or tap water); enter security personnel's filtrator 6 after the pressurization; dress filter core in security personnel's filtrator 6; present embodiment adopts 5 microns filter core, stops diameter to enter reverse osmosis membrane greater than 5 microns particulate and forms effective protection to reverse osmosis membrane.Water through security personnel's filtrator 6 enters in the reverse osmosis membrane that is contained in the pressure housing 11, the product water that sees through reverse osmosis membrane is through 14 times cyclic water tanks 1 of the 2nd flowmeter, a large amount of dense water that do not see through reverse osmosis membrane are discharged from the other end of pressure housing 11, also get back in the cyclic water tank 1 through the 1st flowmeter 13.
Seawater reverse osmosis membrane performance low voltage experiment method of the present invention is to adopt low-pressure test system of seawater reverse osmosis membrane performance, finishes as follows:
1) in cyclic water tank 1, fills with counter-infiltration product water or tap water, seawater reverse osmosis membrane element to be detected is packed in the pressure housing 11, close the 2nd, the 3rd and the 6th valve 4,8,12, open the 1st, the 4th and the 5th valve 2,9,10;
2) start centrifugal pump 3, slowly open the 2nd valve 4 then, until maximum, counterflush seawater reverse osmosis membrane element also discharged 3-5 minute;
3) close the 4th and the 5th valve 9,10, open the 3rd and the 6th valve 8,12, forward flushing seawater reverse osmosis membrane element also discharged 3-5 minute;
4) slowly regulate the 6th valve 12, the 1st, the 2nd tensimeter 5,7 values are risen, until there being fresh water to produce in fresh water line, dense, fresh water refluxes;
5) read the reading of the 2nd flowmeter 14 after 10 minutes, measure fresh water water sample conductivity, write down and calculate the water production rate and the salt rejection rate of single membrane module.
Claims (8)
1. low-pressure test system of seawater reverse osmosis membrane performance, it is characterized in that, include cyclic water tank (1), centrifugal pump (3), the 1st tensimeter (5), the 2nd tensimeter (7), security personnel's filtrator (6), pressure housing (11), the 1st flowmeter (13), the 2nd flowmeter (14), the the 1st to the 6th valve (2,4,8,9,10,12) and pipeline constitute, wherein, the water side of cyclic water tank (1), the 1st valve (2), centrifugal pump (3), the 2nd valve (4), the 1st tensimeter (5), security personnel's filtrator (6), the 2nd tensimeter (7) is connected in series successively by pipeline; The other end of the 2nd tensimeter (7) connects the 3rd valve (8) and the 4th valve (9) respectively by pipeline; The inlet end of the other end of the 4th valve (9) and the 6th valve (12), the 1st flowmeter (13) is connected in series successively by pipeline, and the endpiece of the 1st flowmeter (13) is by the water intake end of pipeline to cyclic water tank (1); The other end of the 3rd valve (8) connects pressure housing (11) and the 5th valve (10) by pipeline respectively again; The other end of the 5th valve (10) connects the inlet end of the 1st flowmeter (13) by pipeline; The inlet end of flow export of pressure housing (11) and the 6th valve (12), the 1st flowmeter (13) is connected in series successively by pipeline, and another flow export of pressure housing (11) is by pipeline and the 2nd flowmeter (14) water intake end to cyclic water tank (1).
2. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, is provided with filtering accuracy in described security personnel's filtrator (6) and is 5 microns filter core.
3. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, a kind of as in counter-infiltration product water and the tap water of the former water that described test macro uses.
4. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, the water that flow export flowed out of the described pressure housing (11) that is connected with the 2nd flowmeter (14) is the product water that sees through reverse osmosis membrane.
5. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, the water that flow export flowed out of the described pressure housing (11) that is connected with valve (12), the 1st flowmeter (13) is the dense water that does not see through reverse osmosis membrane.
6. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, when closing the 4th, the 5th valve (9,10), when opening the 3 6th valve (8,12), reverse osmosis membrane is carried out the forward flushing; When closing the 3 6th valve (8,12), when opening the 4th, the 5th valve (9,10), reverse osmosis membrane is carried out counterflush
7. low-pressure test system of seawater reverse osmosis membrane performance according to claim 1 is characterized in that, described test macro adopts sonde method to measure the distribution of the inner salt rejection rate of reverse osmosis membrane assembly, determines the position of diaphragm defect point.
8. a seawater reverse osmosis membrane performance low voltage experiment method is characterized in that, is to adopt low-pressure test system of seawater reverse osmosis membrane performance, finishes as follows:
1) in cyclic water tank (1), fills with counter-infiltration product water or tap water, seawater reverse osmosis membrane element to be detected is packed in the pressure housing (11), close the 2nd, the 3rd and the 6th valve (4,8,12), open the 1st, the 4th and the 5th valve (2,9,10);
2) start centrifugal pump (3), slowly open the 2nd valve (4) then, until maximum, counterflush seawater reverse osmosis membrane element also discharged 3-5 minute;
3) close the 4th and the 5th valve (9,10), open the 3rd and the 6th valve (8,12), forward flushing seawater reverse osmosis membrane element also discharged 3-5 minute;
4) slowly regulate the 6th valve (12), the 1st, the 2nd tensimeter (5,7) value is risen, until there being fresh water to produce in fresh water line, dense, fresh water refluxes;
5) read the reading of the 2nd flowmeter (14) after 10 minutes, measure fresh water water sample conductivity, write down and calculate the water production rate and the salt rejection rate of single membrane module.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949817A (en) * | 2010-08-24 | 2011-01-19 | 中国科学院上海应用物理研究所 | Automatic filter membrane flux evaluation device and method |
| CN102500240A (en) * | 2011-11-23 | 2012-06-20 | 哈尔滨工业大学 | System and method for testing influences of electromagnetic field on separation performance of reverse osmosis membrane |
| US8596110B2 (en) | 2011-03-14 | 2013-12-03 | King Fahd University Of Petroleum And Minerals | Device and method for testing reverse osmosis membranes |
| CN104069742A (en) * | 2014-07-10 | 2014-10-01 | 马钢(集团)控股有限公司 | Membrane element detection device for desalting water station and membrane element detection method |
| CN106885764A (en) * | 2015-12-16 | 2017-06-23 | 北京银河巴马生物技术股份有限公司 | A kind of biomembrane anti-permeability detection means and application |
| CN107063973A (en) * | 2017-06-05 | 2017-08-18 | 华北理工大学 | The determining instrument and experimental method of clay mambrane efficiency factor |
| CN111059065A (en) * | 2019-12-16 | 2020-04-24 | 江苏大学 | Dynamic performance testing device for energy recovery all-in-one machine of seawater desalination pump |
| CN117110066A (en) * | 2023-10-12 | 2023-11-24 | 佛山市芯耀环保科技有限公司 | Filter element testing system and method |
-
2007
- 2007-01-30 CN CN 200710056656 patent/CN100587466C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949817A (en) * | 2010-08-24 | 2011-01-19 | 中国科学院上海应用物理研究所 | Automatic filter membrane flux evaluation device and method |
| CN101949817B (en) * | 2010-08-24 | 2012-10-03 | 中国科学院上海应用物理研究所 | Automatic filter membrane flux evaluation device and method |
| US8596110B2 (en) | 2011-03-14 | 2013-12-03 | King Fahd University Of Petroleum And Minerals | Device and method for testing reverse osmosis membranes |
| CN102500240A (en) * | 2011-11-23 | 2012-06-20 | 哈尔滨工业大学 | System and method for testing influences of electromagnetic field on separation performance of reverse osmosis membrane |
| CN104069742A (en) * | 2014-07-10 | 2014-10-01 | 马钢(集团)控股有限公司 | Membrane element detection device for desalting water station and membrane element detection method |
| CN106885764A (en) * | 2015-12-16 | 2017-06-23 | 北京银河巴马生物技术股份有限公司 | A kind of biomembrane anti-permeability detection means and application |
| CN106885764B (en) * | 2015-12-16 | 2019-08-27 | 北京银河巴马生物技术股份有限公司 | A kind of biomembrane anti-permeability detection device and application |
| CN107063973A (en) * | 2017-06-05 | 2017-08-18 | 华北理工大学 | The determining instrument and experimental method of clay mambrane efficiency factor |
| CN111059065A (en) * | 2019-12-16 | 2020-04-24 | 江苏大学 | Dynamic performance testing device for energy recovery all-in-one machine of seawater desalination pump |
| CN117110066A (en) * | 2023-10-12 | 2023-11-24 | 佛山市芯耀环保科技有限公司 | Filter element testing system and method |
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| CN100587466C (en) | 2010-02-03 |
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