CN108905635A - One kind referring to calibration method for detecting coiled reverse osmosis membrane assembly property - Google Patents
One kind referring to calibration method for detecting coiled reverse osmosis membrane assembly property Download PDFInfo
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- CN108905635A CN108905635A CN201810812348.9A CN201810812348A CN108905635A CN 108905635 A CN108905635 A CN 108905635A CN 201810812348 A CN201810812348 A CN 201810812348A CN 108905635 A CN108905635 A CN 108905635A
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- Prior art keywords
- reverse osmosis
- osmosis membrane
- coiled reverse
- membrane component
- finished product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses one kind to refer to calibration method for detecting coiled reverse osmosis membrane assembly property, and this approach includes the following steps：S1：N number of diaphragm is cut out from not used coiled reverse osmosis membrane piece volume, and each diaphragm cuts out the sample film that one long and width is 7cm*6cm；S2：N number of diaphragm is fabricated to N number of coiled reverse osmosis membrane component finished product；S3：On the detection system by the installation of N number of sample film, while N-M group water yield (m3/d) A and salt rejection rate B, N-M group A and B and N-M coiled reverse osmosis membrane component finished product one-to-one correspondence are detected and obtained to N number of sample film；S4：N-M coiled reverse osmosis membrane component finished product passes through its integrality of air-leakage test；S5：Calculate the average value A1 and B1 of N-M group A and B；S6：Each coiled reverse osmosis membrane component end properties index is A1 and B1.The present invention, which shortens, detects total time used in a roll of reverse osmosis membrane, reduces human input, improves detection efficiency.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to one kind is for detecting coiled reverse osmosis membrane assembly property index
Method.
Background technique
Hyperfiltration can effectively remove the inorganic matter being dissolved in the water, organic matter, bacterium, pyrogen and other particles
Deng.So-called infiltration refers to the solution that two kinds of various concentrations are separated with semi-permeable membrane, wherein solute cannot penetrate semi-permeable membrane, then concentration compared with
Low side's hydrone can reach the higher another party of concentration by semi-permeable membrane, until the concentration until two sides is equal.Do not having also
Before reaching balance, it can gradually apply pressure in the higher side of concentration, then aforementioned hydrone moving condition can temporarily stop
Only, pressure required at this time is called, and " osmotic pressure, if the strength applied is greater than osmotic pressure, the mobile of moisture content can opposite direction
And go, that is, the side of low concentration is flowed to from the side of high concentration, this phenomenon is just called " reverse osmosis ".Reverse osmosis purifying
Effect can achieve the level of ion, for monovalent ion elimination factor up to 90% or more.
Coiled reverse osmosis membrane component includes water inlet net, produces the network of rivers, diaphragm and central tube.Coiled reverse osmosis membrane component is according to suitable
Water quality type is distinguished, and is classified as：Fresh water membrane module, bitter membrane module, seawater membrane module, main performance index packet
It includes：Water yield (m3/d), salt rejection rate.Here performance indicator determines by diaphragm, wherein water inlet net, producing the network of rivers and central tube not shadow
Ring the index.The reagent that performance indicator detection uses is sodium chloride and distilled water (or deionized water).At present for batches of
The performance indicator detection method of coiled reverse osmosis membrane component is to use to detect one by one, and each coiled reverse osmosis membrane component is put into survey
In test system, and carried out according to following testing procedure：
Step 1: concentrated water valve is placed in by coiled reverse osmosis membrane component according in glass fiber reinforced plastic membrane in a test system
Full-gear starts water pump, is that test macro is run 3~5 minutes in a low voltage state (0.1-0.3MPA), by the sky in system
Gas emptying.
Step 2: adjusting water temperature to 20-25 degrees Celsius, start high-pressure pump, concentrated water valve is adjusted, according to the test of Fig. 1 and Fig. 2
Condition, test macro are run 30 minutes, then obtain following data：Temperature, raw water conductance, produce water power lead, concentrated water conductance, raw water
Flow produces water flow, concentrated water flow, raw water pH value.
Step 3: concentrated water valve is fully opened, test macro is right in a low voltage state (0.1-0.3MPA) after the completion of test
Coiled reverse osmosis membrane component is rinsed, and the time is no less than 10 minutes.It is completed.Test macro or above data are counted
Calculate water yield (m3/d), the salt rejection rate for finally obtaining the coiled reverse osmosis membrane component.
The above-mentioned steps used time at least 45 minutes, and be only one coiled reverse osmosis membrane component of test it is used when
Between.Due to diaphragm size due to producer is different different from, the size range of diaphragm it is as follows：One coiled reverse osmosis membrane group
The length of the diaphragm of part is at 35-45 meters, 0.9-1.1 meters of width, and the width of a roll of reverse osmosis membrane is 1 meter, length 500-
1200 meters.But most producers select following size：41 meters of the length of the diaphragm of one coiled reverse osmosis membrane component, width are
0.9 meter.The width of a roll of reverse osmosis membrane is 1 meter, and length is 915 meters.A roll of reverse osmosis membrane can at most produce 20
Coiled reverse osmosis membrane component, because connection will occupy part diaphragm, so the significant surface of the diaphragm of each coiled reverse osmosis membrane component
Product is about 37 square meters.The glass fiber reinforced plastic membrane of test macro can only accommodate a coiled reverse osmosis membrane component, thus every time can only be right
One coiled reverse osmosis membrane component is tested, and has detected 20 coiled reverse osmosis membrane components, that is, a roll of reverse osmosis membrane
Piece then needs at least 900 minutes.Therefore, in order to obtain a collection of coiled reverse osmosis membrane component, above-mentioned traditional rolling is reverse osmosis
The method used time of membrane module performance indicator is too long, and human input is larger, causes efficiency very low.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of for detecting coiled reverse osmosis membrane assembly property index
Method detects total time used in a roll of reverse osmosis membrane to shorten, reduces human input, improve detection efficiency.
The present invention provides one kind to refer to calibration method for detecting coiled reverse osmosis membrane assembly property, and this method includes following
Step：
S1：N number of diaphragm is cut out from not used coiled reverse osmosis membrane piece volume, and each diaphragm cuts out one
Long and width is the sample film of 7cm*6cm；
S2：N number of diaphragm is fabricated to N number of coiled reverse osmosis membrane component finished product；
S3：On the detection system by the installation of N number of sample film, while N number of sample film is detected and obtains N-M group and produce water
(m3/d) A and salt rejection rate B, N-M group A and B is measured to correspond with N-M coiled reverse osmosis membrane component finished product；
S4：N-M coiled reverse osmosis membrane component finished product passes through its integrality of air-leakage test；
S5：Calculate the average value A1 and B1 of N-M group A and B；
S6：Each coiled reverse osmosis membrane component end properties index is A1 and B1.
Preferably, M is the quantity for the sample film that detection system detects data exception.When the breakage of sample film, then detect
Data detected by system will be abnormal, illustrates that the corresponding coiled reverse osmosis membrane component finished product of the sample film is damaged, cannot
The step of into air-leakage test, avoid the performance indicator for influencing other normal specimens.
Preferably, 1≤N≤20,0≤M≤N.
Preferably, the detection system is equipped with 20 check bits, for installing sample film.One coiled reverse osmosis membrane piece volume
Most multipotency produces 20 coiled reverse osmosis membrane component finished products, therefore most 20 check bits of design on the detection system, can be with
20 sample films are detected simultaneously.
Preferably, each check bit includes water inlet net matched with sample film, produces the network of rivers and central tube.Sample position
Water inlet net and produce the network of rivers and can quickly complete installation with sample film ining conjunction with, reduce time for consuming in detection process, improve and detect
Efficiency.
Preferably, the air-leakage test in S4 includes the following steps：
S41：One end of the central tube of N-M coiled reverse osmosis membrane component finished product is sealed, other end is and gas source
Connection；
S42：N-M coiled reverse osmosis membrane component finished product is totally immersed into the water tank equipped with deionized water；
S43：Gas source switch is opened, is inflated into the central tube of N-M coiled reverse osmosis membrane component finished product, pressure is adjusted to
2-10psi；
S44：N-M coiled reverse osmosis membrane component finished product of observation whether bubbling gas leakage；
S45：N-M coiled reverse osmosis membrane component finished product then carries out step S5 without bubbling gas leakage；
S46：There is bubbling gas leakage in N-M coiled reverse osmosis membrane component finished product, then repaired, repeats step S42-
S46 is until N-M coiled reverse osmosis membrane component finished product is without bubbling gas leakage.
The detection method of air-leakage test is very quick, easy to operate, and just can judge whether leak with artificial eye
Gas further reduces the time consumed in detection process, improves detection efficiency.
The beneficial effects of the present invention are embodied in：
Since coiled reverse osmosis membrane component finished-product volume is larger, the glass fiber reinforced plastic membrane of detection system can only at most accommodate one
Coiled reverse osmosis membrane component finished product, but can accommodate simultaneously 20 7cm*6cm sample film and can simultaneously to 20 samples
Film is detected.The present invention replaces coiled reverse osmosis membrane component finished product to carry out performance Indexs measure using the sample film of 7cm*6cm,
This method simultaneously detects 20 sample films, and the time used in 20 sample films of detection is only traditional detection method
The time used in a coiled reverse osmosis membrane component finished product is detected, to substantially reduce detection time.
Detect the not damaged corresponding coiled reverse osmosis membrane component finished product of sample film after system detection again after testing
Integrality, so that it is determined that the corresponding diaphragm of sample film is then repaired without breakage if any breakage.Detection is acquired finally by calculating
The average value of the detected value of system inspection, which is then coiled reverse osmosis membrane component end properties index, and is averaging
The mode of value is conducive to improve the accuracy of performance indicator.
Multiple coiled reverse osmosis membrane component end properties indexs can be obtained in a short time by this method, kept away
Exempt from traditional individually to detect one by one and occupy the plenty of time.Especially it is used for high-volume coiled reverse osmosis membrane component end properties
Indexs measure greatly shortens total time required for detection, to reduce human input, improves detection efficiency.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is that coiled reverse osmosis membrane component finished product permeance property tests solution；
Fig. 2 is permeance property index test condition；
Fig. 3 is the testing result of 20 sample films；
Fig. 4 is the testing result of 20 coiled reverse osmosis membrane component finished products；
Fig. 5 is the structural schematic diagram of test macro.
In attached drawing, 1- glass fiber reinforced plastic membrane, 2- concentrated water valve, 3- water pump, 4- high-pressure pump, 5- flowmeter, 6- sampling valve, 7- flushing
Valve
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
Present embodiments provide it is a kind of refer to calibration method for detecting coiled reverse osmosis membrane assembly property, this method include with
Lower step：
S1：N number of diaphragm is cut out from not used coiled reverse osmosis membrane piece volume, and each diaphragm cuts out one
Long and width is the sample film of 7cm*6cm.Here the size of the diaphragm cut is not less than for making a coiled reverse osmosis membrane group
Size required for part finished product, diaphragm size is 37 square meters under normal conditions.Wherein 1≤N≤20, N takes 20 here.
S2：N number of diaphragm is fabricated to N number of coiled reverse osmosis membrane component finished product.
S3：On the detection system by the installation of N number of sample film, while N number of sample film is detected and obtains N-M group and produce water
(m3/d) A and salt rejection rate B, N-M group A and B is measured to correspond with N-M coiled reverse osmosis membrane component finished product.The detection system
Equipped with 20 check bits, for installing sample film.It is reverse osmosis that one coiled reverse osmosis membrane piece volume most multipotency produces 20 rollings
Membrane module finished product, therefore 20 check bits are at most designed on the detection system, 20 sample films can be detected simultaneously.Often
A check bit includes water inlet net matched with sample film, produces the network of rivers and central tube.The water inlet net of sample position and the production network of rivers
Installation can be quickly completed in conjunction with sample film, reduces the time consumed in detection process, improve detection efficiency.Wherein detection system
Structural schematic diagram it is as shown in Figure 5.
The specific detecting step of detection system is as follows：
S31：By in the glass fiber reinforced plastic membrane 1 of 20 sample film installations in a test system, concentrated water valve 2 is placed in standard-sized sheet shape
State starts water pump 3, is that test macro is run 3~5 minutes in a low voltage state (0.1-0.3MPA), the air in system is arranged
It is empty.
S32：Water temperature is adjusted to 20-25 degrees Celsius, starts high-pressure pump 4, concentrated water valve is adjusted, according to the test-strips of Fig. 1 and Fig. 2
Part, test macro is run 30 minutes, by flowmeter 5 and sampling valve 6, using obtaining following data after detection：Temperature, raw water
Conductance, production water power lead, concentrated water conductance, raw water flow, produce water flow, concentrated water flow, raw water pH value.
S33：After the completion of test, concentrated water valve is fully opened, test macro in a low voltage state (0.1-0.3MPA), is opened
Flushing valve 7 is rinsed coiled reverse osmosis membrane component, and the time is no less than 10 minutes.
The value of the testing result of 20 sample films, i.e. water yield (m3/d) A and the value of salt rejection rate B, as shown in Figure 3.Detection
In be no different regular data, illustrate 20 sample films without breakage, then M=0.M is the sample film that detection system detects data exception
Quantity.When the breakage of sample film, then data detected by detection system will be abnormal, illustrates that the corresponding rolling of the sample film is anti-
The step of permeable membrane element finished product is damaged, not can enter air-leakage test, avoids the performance for influencing other normal specimens from referring to
Mark.
S4：20 coiled reverse osmosis membrane component finished products are by its integrality of air-leakage test, i.e., reverse osmosis to 20 rollings
Membrane module finished product carries out air-leakage test.It here include air compressor machine, exhaust pipe and valve pressure for the equipment of air-leakage test
Control circuit.Air-leakage test in S4 includes the following steps：
S41：One end of the central tube of 20 coiled reverse osmosis membrane component finished products is sealed, other end is and exhaust pipe
Connection；
S42：20 coiled reverse osmosis membrane component finished products are totally immersed into the water tank equipped with deionized water；
S43：Gas source switch is opened by valve pressure control circuit, toward the center of 20 coiled reverse osmosis membrane component finished products
It is inflated in pipe, pressure is adjusted to 2-10psi；
S44：Observe 20 coiled reverse osmosis membrane component finished products whether bubbling gas leakage；
S45：20 coiled reverse osmosis membrane component finished products then carry out step S5 without bubbling gas leakage；
S46：There is bubbling gas leakage in 20 coiled reverse osmosis membrane component finished products, then repaired, repeats step S42-S46
Until 20 coiled reverse osmosis membrane component finished products are without bubbling gas leakage.
The detection method of air-leakage test in the present embodiment is very quick, easy to operate, and just can with artificial eye
Judge whether gas leakage, further reduce the time consumed in detection process, improve detection efficiency.
S5：Calculate the average value A1 and B1 of 20 groups of A and B, as shown in Figure 3, A1=0.0045, B1=99.49%.
S6：Each coiled reverse osmosis membrane component end properties index is A1 and B1,20 coiled reverse osmosis membrane components
End properties index is：Water yield (m3/d)=0.0045, salt rejection rate=99.49%.
Since coiled reverse osmosis membrane component finished-product volume is larger, the glass fiber reinforced plastic membrane of detection system can only at most accommodate one
Coiled reverse osmosis membrane component finished product, but can accommodate simultaneously 20 7cm*6cm sample film and can simultaneously to 20 samples
Film is detected.The present invention replaces coiled reverse osmosis membrane component finished product to carry out performance Indexs measure using the sample film of 7cm*6cm,
This method simultaneously detects 20 sample films, and detecting the consumed time is about 45 minutes, only traditional detection method
Detect the time used in a coiled reverse osmosis membrane component finished product.And traditional detection method detects 20 coiled reverse osmosis membrane components
Finished product then needs 45*20=900 minutes, and very simple to the process of the pneumatic sealing test of 20 coiled reverse osmosis membrane component finished products
Single, elapsed time is about 5 minutes, along with 20 sample films detected consumed by 45 minutes, this method amounts to when consuming
Between about 50 minutes, it is very short compared to for 900 minutes.It can thus be appreciated that this method substantially reduces detection time, improve
Detection efficiency decreases human input.In addition, the performance indicator in this method is the average value of 20 groups of data, and it is averaging
The mode of value is conducive to improve the accuracy of performance indicator.
In order to illustrate test sample film performance indicator and detection coiled reverse osmosis membrane component end properties index without area
Not, the present embodiment carries out performance Indexs measure to 20 coiled reverse osmosis membrane component finished products respectively, obtains 20 by detection system
20 groups of data of a coiled reverse osmosis membrane component finished product, as shown in figure 4,20 coiled reverse osmosis membrane component end properties refer to
Mark：Water yield (m3/d)=39.82, salt rejection rate=99.48%.The effective area of 37 square meters is scaled 0.0042 square meter again
Effective area, correspondingly, water yield (m3/d)=39.82/ (37/0.0042)=0.0045, it is possible thereby to prove sample film
Performance indicator just represents coiled reverse osmosis membrane component end properties index.
The present embodiment is with following having a size of example：The width of a roll of reverse osmosis membrane is 1 meter, and length is 915 meters.One volume
41 meters of the length of the diaphragm of formula reverse osmosis membrane assembly, width are 0.9 meter, and effective area is 37 square meters.But it is not limited only to above-mentioned
Size, specific size are selected according to the actual situation.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (6)
1. one kind refers to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：This method includes following step
Suddenly：
S1：Cut out N number of diaphragm from not used coiled reverse osmosis membrane piece volume, and each diaphragm cut out it is one long and
Width is the sample film of 7cm*6cm；
S2：N number of diaphragm is fabricated to N number of coiled reverse osmosis membrane component finished product；
S3：On the detection system by the installation of N number of sample film, while N number of sample film is detected and obtains N-M group water yield
(m3/d) A and salt rejection rate B, N-M group A and B is corresponded with N-M coiled reverse osmosis membrane component finished product；
S4：N-M coiled reverse osmosis membrane component finished product passes through its integrality of air-leakage test；
S5：Calculate the average value A1 and B1 of N-M group A and B；
S6：Each coiled reverse osmosis membrane component end properties index is A1 and B1.
2. according to claim 1 refer to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：M
The quantity of the sample film of data exception is detected for detection system.
3. according to claim 2 refer to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：1
≤ N≤20,0≤M≤N.
4. according to claim 1 refer to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：Institute
Detection system is stated equipped with 20 check bits, for installing sample film.
5. according to claim 4 refer to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：Often
A check bit includes water inlet net matched with sample film, produces the network of rivers and central tube.
6. according to claim 1 refer to calibration method for detecting coiled reverse osmosis membrane assembly property, it is characterised in that：S4
In air-leakage test include the following steps：
S41：One end of the central tube of N-M coiled reverse osmosis membrane component finished product is sealed, other end is connected to gas source；
S42：N-M coiled reverse osmosis membrane component finished product is totally immersed into the water tank equipped with deionized water；
S43：Gas source switch is opened, is inflated into the central tube of N-M coiled reverse osmosis membrane component finished product, pressure is adjusted to 2-
10psi；
S44：N-M coiled reverse osmosis membrane component finished product of observation whether bubbling gas leakage；
S45：N-M coiled reverse osmosis membrane component finished product then carries out step S5 without bubbling gas leakage；
S46：There is bubbling gas leakage in N-M coiled reverse osmosis membrane component finished product, then repaired, it is straight to repeat step S42-S46
To N-M coiled reverse osmosis membrane component finished product without bubbling gas leakage.
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Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |