CN104399374B - A kind of method detecting complex reverse osmosis membrane desalination layer integrity and detection device thereof - Google Patents
A kind of method detecting complex reverse osmosis membrane desalination layer integrity and detection device thereof Download PDFInfo
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- CN104399374B CN104399374B CN201410690996.3A CN201410690996A CN104399374B CN 104399374 B CN104399374 B CN 104399374B CN 201410690996 A CN201410690996 A CN 201410690996A CN 104399374 B CN104399374 B CN 104399374B
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- 239000012528 membrane Substances 0.000 title claims abstract description 72
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 69
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000011156 evaluation Methods 0.000 claims abstract description 22
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229940043267 rhodamine b Drugs 0.000 claims abstract description 14
- 238000004043 dyeing Methods 0.000 claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 82
- 239000012530 fluid Substances 0.000 claims description 68
- 239000010410 layer Substances 0.000 claims description 46
- 239000002344 surface layer Substances 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000012466 permeate Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000005336 safety glass Substances 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 9
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000000975 dye Substances 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000005374 membrane filtration Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
nullThe present invention relates to reverse osmosis membrane integrity detection technical field，A kind of method detecting complex reverse osmosis membrane desalination layer integrity and detection device thereof，By using rhodamine B to be added in saline solution being configured to certain density dyeing liquor as dyestuff，Utilize the device that the present invention provides，Reverse osmosis membrane filtration principle is used in dyeing detection field，By dyeing liquor according to filtering water treatment steps by dyeing in reverse osmosis membrane desalination layer，Rinsed after dense water colorless by clear water，Taking-up carries out micro-judgement，Punctation or lines occur，Then show existing defects，And then the evaluation being accurately positioned has been reached for the defect situation of reverse osmosis membrane，Traditional penetrating amount and the detection of salt rejection rate have been broken away from the detection making the desalination layer to reverse osmosis membrane，And specific to UF layer and the detection of desalination layer，Improve the accuracy rate of detection.
Description
Technical field
The present invention relates to reverse osmosis membrane integrity detection technical field, especially a kind of detection complex reverse osmosis membrane desalination layer
The method of integrity and detection device thereof.
Background technology
Reverse osmosis technology (Reverse Osmosis membrane, RO) is that most advanced and the most energy-conservation effective film divides
From technology.Its principle is under the effect higher than solution osmotic pressure, can not be through semipermeable membrane by these things according to other materials
Matter and water are separated.Due to the membrane aperture of reverse osmosis membrane the least (only about 10A), therefore, it is possible to effectively remove in water
Dissolved salts, colloid, microorganism, Organic substance etc. (clearance is up to 97%-98%).Reverse osmosis is in current high purity water equipment
Most widely used a kind of desalting technology, it separate to as if solution in ion range and molecular weight reach hundreds of organic
Thing.
Reverse osmosis membrane is a kind of high-performance separation membrane material, the most progressively replaces traditional water treatment technology, in municipal administration
The aspects such as sewage disposal, Treatment of Industrial Water, drinking water treatment, desalinization are more and more applied, and have energy-conservation, ring
The advantage such as protect, floor space is little.But current domestic reverse osmosis membrane technology more developed country falls behind, and the evaluating method of reverse osmosis membrane is relatively
Few, main detection means is the method for testing of the key propertys such as reverse osmosis membrane flux and salt rejection rate, does not has concrete UF layer, de-
The related detection devices such as salt deposit and method.
Summary of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention provides a kind of detection complex reverse osmosis membrane to take off
The method of salt deposit integrity, the defect situation of reverse osmosis membrane can effectively be detected by the method, and then improves anti-
The penetrating amount of permeable membrane application and strainability, improve the final effect to sewage disposal, it is ensured that the quality of sewage disposal,
Improve water quality resource.
Further, the present invention also provides for a kind of device detecting complex reverse osmosis membrane desalination layer integrity on this basis, should
Reverse osmosis diaphragm or membrane module effectively can be carried out dyeing detection by device, it is possible to accurately by the desalination layer of reverse osmosis membrane
Defect situation detect, and can detect for different types of reverse osmosis diaphragm or membrane module so that inspection
Survey result and meet demand, it is ensured that reverse osmosis membrane is at the security performance of water treatment field and shedding quality.
It is achieved particular by techniques below scheme:
A kind of method detecting complex reverse osmosis membrane desalination layer integrity, comprises the following steps:
(1) preparation test fluid: it is 245-33000mg/l that water intaking and sodium chloride are configured to concentration, then is added thereto to Luo Dan
Bright B, and the mixing speed using mixing speed to be 300-400r/min is uniformly mixed, and control the addition of rhodamine B,
After making rhodamine B concentration in the solution be 190-210ppm, it is thus achieved that test fluid, and it is placed in test fluid case, adjusts
PH value is 7.45-7.55, stand-by；
(2) film is installed: be arranged on by film to be detected in evaluation pond so that the desalination layer of film is towards the water inlet evaluating pond
Mouthful, stand-by；
(3) pressurization dyeing: open booster pump, it is 0.39-5.55MPa that adjustable cut-off valve makes to test pressure, and controls temperature
Degree, for 24.5-25.5 DEG C, maintains under constant temperature and pressure, runs 29-31min, then open stop valve and pressure-regulating valve, adjust pressure
Pressure≤the 10psi of power table a and Pressure gauge b, is then shut off booster pump, stand-by；
(4) rinse: the test fluid in test fluid case is emitted, and be added thereto to clear water flushing test fluid case 3-4 time,
It is added thereto to clear water fuller to test fluid case, is then turned on booster pump, adjust stop valve and pressure-regulating valve so that Pressure gauge a
It is 20psi with the pressure of Pressure gauge b, and by concentrated stream gauge, controls the flow velocity >=0.45m/s of liquid, dense water to be got rid of
In time without color, stop flushing process, stand-by；
(5) evaluation is taken out: taking out diaphragm, microexamination diaphragm watch surface layer, punctation or line, then film occurs in surface layer
The desalination layer of sheet receives damage, for incomplete diaphragm；There is not punctation or line in surface layer, then diaphragm desalination layer is complete
Good lossless.
Described pond of evaluating is that Flat Membrane evaluates pond, hollow membrane evaluates the one in pond.
Described film is the one in reverse osmosis diaphragm, reverse osmosis membrane assembly.
When described film is reverse osmosis membrane assembly, described evaluation pond is pressure vessel, and the putamina of reverse osmosis membrane assembly is
A kind of in safety glass, rustless steel, plastics makes.
Described plastics are ABS.
Another object of the present invention is to provide a kind of device detecting complex reverse osmosis membrane desalination layer integrity, including
Test fluid case, form loop with test fluid case with temperature conditioning unit by pipeline, by pipeline, test fluid case is connected with evaluating pond
Connect, and on the pipeline of this connection, be provided with Pressure gauge a and booster pump, booster pump near test fluid case end, Pressure gauge a with
Being provided with an opening between booster pump, this opening is connected with test fluid case top by pipeline, and at this opening and test fluid case
Stop valve it is provided with on pipeline；Evaluating pond and be internally provided with film deposit position, the top evaluating pond is provided with permeate outlet, should
Permeate outlet is connected with test fluid case by pipeline；Evaluating and be additionally provided with dense water out on pond, this dense water out passes through pipeline
Connect with test fluid case, and on this connecting pipeline from the beginning of evaluating pond end, be disposed with Pressure gauge b, pressure-regulating valve and
Concentrated stream gauge.
Described evaluation pond can also be used with pressure vessel and replaces.
Described film is the one in reverse osmosis diaphragm, reverse osmosis membrane assembly.
The desalination layer of described film is towards the water inlet evaluating pond.
Compared with prior art, the technique effect of the present invention is embodied in:
1 by using rhodamine B to be added in saline solution being configured to certain density dyeing liquor as dyestuff, then will dye
Color liquid is according to filtering water treatment steps by dyeing in reverse osmosis membrane desalination layer, then is rinsed after dense water colorless by clear water,
Taking-up carries out micro-judgement, punctation or lines occurs, then show existing defects, and then be the defect situation of reverse osmosis membrane
Reach the evaluation being accurately positioned so that the detection of the desalination layer of reverse osmosis membrane has been broken away from traditional penetrating amount and salt rejection rate
Detection, and specific to UF layer and the detection of desalination layer, improve the accuracy rate of detection.
2 present invention also provide for the device of a kind of detection, and rhodamine B is applied to the desalination layer of reverse osmosis membrane desalination layer detection
Defect, and then use desalination layer desalination principle to dye the defects detection of reverse osmosis membrane desalination layer, Jin Erda
To even dyeing, then pass through microexamination so that more accurate to the defects detection of reverse osmosis membrane, it is ensured that reverse osmosis membrane desalination
The layer completeness to sewage disposal, improves the quality of sewage disposal, reduces the testing cost of reverse osmosis membrane desalination layer.
Accompanying drawing explanation
Fig. 1 is the overall structure connection diagram of the detection complex reverse osmosis membrane desalination layer integrity device of the present invention.
1-test fluid case 2-booster pump 3-stop valve 4-Pressure gauge a 5-film 6-evaluates pond 7-permeate outlet 8-pressure
Power table b 9-pressure-regulating valve 10-concentrated stream gauge 11-temperature conditioning unit 12-thermometer 13-pipeline.
Detailed description of the invention
With specific embodiment, technical scheme is further limited below in conjunction with the accompanying drawings, but requirement
The scope of protection is not only limited to description.
Embodiment 1
As it is shown in figure 1, a kind of method detecting complex reverse osmosis membrane desalination layer integrity, comprise the following steps:
(1) preparation test fluid: it is 245-33000mg/l that water intaking and sodium chloride are configured to concentration, then is added thereto to Luo Dan
Bright B, and the mixing speed using mixing speed to be 350r/min is uniformly mixed, and control the addition of rhodamine B so that
After rhodamine B concentration in the solution is 200ppm, it is thus achieved that test fluid, and being placed in test fluid case 1, adjusting pH value is
7.45-7.55, stand-by；
(2) film is installed: be arranged on by film 5 to be detected in evaluation pond 6 so that the desalination layer of film is towards evaluating entering of pond 6
The mouth of a river, stand-by；
(3) pressurization dyeing: open booster pump 2, it is 0.39-5.55MPa that adjustable cut-off valve 3 makes to test pressure, and controls
Temperature is 24.5-25.5 DEG C, maintains under constant temperature and pressure, runs 30min, then open stop valve 3 and pressure-regulating valve 9, adjusts
Pressure≤the 10psi of Pressure gauge a4 and Pressure gauge b8, is then shut off booster pump 2, stand-by；
(4) rinse: the test fluid in test fluid case 1 is emitted, and be added thereto to clear water flushing test fluid case 4 times,
It is added thereto to clear water fuller to test fluid case 1, is then turned on booster pump 2, adjust stop valve 3 and pressure-regulating valve 9 so that pressure
The pressure of table a4 and Pressure gauge b8 is 20psi, and by concentrated stream gauge 10, controls the flow velocity >=0.45m/s of liquid, wait to get rid of
Dense water without color time, stop flushing process, stand-by；
(5) evaluation is taken out: taking out diaphragm, microexamination diaphragm watch surface layer, punctation or line, then film occurs in surface layer
The desalination layer of sheet receives damage, for incomplete diaphragm；There is not punctation or line in surface layer, then diaphragm desalination layer is complete
Good lossless.
Described evaluation pond is that hollow membrane evaluates pond.
Described film 5 is reverse osmosis membrane assembly.
When described film 5 is reverse osmosis membrane assembly, described evaluation pond 6 is pressure vessel, the putamina of reverse osmosis membrane assembly
For rustless steel.
Concrete test fluid for different reverse osmosis membrane types, the concentration of test fluid, the pH value of test fluid, test time
Temperature, the flow velocity that shows of test pressure, concentrated stream gauge be shown in table 1 below:
Table 1:
Embodiment 2
As it is shown in figure 1, a kind of method detecting complex reverse osmosis membrane desalination layer integrity, comprise the following steps:
(1) preparation test fluid: it is 245-33000mg/l that water intaking and sodium chloride are configured to concentration, then is added thereto to Luo Dan
Bright B, and the mixing speed using mixing speed to be 400r/min is uniformly mixed, and control the addition of rhodamine B so that
After rhodamine B concentration in the solution is 210ppm, it is thus achieved that test fluid, and being placed in test fluid case 1, adjusting pH value is
7.45-7.55, stand-by；
(2) film is installed: be arranged on by film 5 to be detected in evaluation pond 6 so that the desalination layer of film is towards evaluating entering of pond 6
The mouth of a river, stand-by；
(3) pressurization dyeing: open booster pump 2, it is 0.39-5.55MPa that adjustable cut-off valve 3 makes to test pressure, and controls
Temperature is 24.5-25.5 DEG C, maintains under constant temperature and pressure, runs 31min, then open stop valve 3 and pressure-regulating valve 9, adjusts
Pressure≤the 10psi of Pressure gauge a4 and Pressure gauge b8, is then shut off booster pump 2, stand-by；
(4) rinse: the test fluid in test fluid case 1 is emitted, and be added thereto to clear water flushing test fluid case 4 times,
It is added thereto to clear water fuller to test fluid case 1, is then turned on booster pump 2, adjust stop valve 3 and pressure-regulating valve 9 so that pressure
The pressure of table a4 and Pressure gauge b8 is 20psi, and by concentrated stream gauge 10, controls the flow velocity >=0.45m/s of liquid, wait to get rid of
Dense water without color time, stop flushing process, stand-by；
(5) evaluation is taken out: taking out diaphragm, microexamination diaphragm watch surface layer, punctation or line, then film occurs in surface layer
The desalination layer of sheet receives damage, for incomplete diaphragm；There is not punctation or line in surface layer, then diaphragm desalination layer is complete
Good lossless.
Described evaluation pond is that hollow membrane evaluates pond.
Described film 5 is reverse osmosis membrane assembly.
When described film 5 is reverse osmosis membrane assembly, described evaluation pond 6 is pressure vessel, the putamina of reverse osmosis membrane assembly
For ABS.
Concrete test fluid for different reverse osmosis membrane types, the concentration of test fluid, the pH value of test fluid, test time
Temperature, the flow velocity that shows of test pressure, concentrated stream gauge be shown in table 1 below:
Table 1:
Embodiment 3
As it is shown in figure 1, a kind of method detecting complex reverse osmosis membrane desalination layer integrity, comprise the following steps:
(1) preparation test fluid: it is 245-33000mg/l that water intaking and sodium chloride are configured to concentration, then is added thereto to Luo Dan
Bright B, and the mixing speed using mixing speed to be 300r/min is uniformly mixed, and control the addition of rhodamine B so that
After rhodamine B concentration in the solution is 190ppm, it is thus achieved that test fluid, and being placed in test fluid case 1, adjusting pH value is
7.45-7.55, stand-by；
(2) film is installed: be arranged on by film 5 to be detected in evaluation pond 6 so that the desalination layer of film is towards evaluating entering of pond 6
The mouth of a river, stand-by；
(3) pressurization dyeing: open booster pump 2, it is 0.39-5.55MPa that adjustable cut-off valve 3 makes to test pressure, and controls
Temperature is 24.5-25.5 DEG C, maintains under constant temperature and pressure, runs 29min, then open stop valve 3 and pressure-regulating valve 9, adjusts
Pressure≤the 10psi of Pressure gauge a4 and Pressure gauge b8, is then shut off booster pump 2, stand-by；
(4) rinse: the test fluid in test fluid case 1 is emitted, and be added thereto to clear water flushing test fluid case 3 times,
It is added thereto to clear water fuller to test fluid case 1, is then turned on booster pump 2, adjust stop valve 3 and pressure-regulating valve 9 so that pressure
The pressure of table a4 and Pressure gauge b8 is 20psi, and by concentrated stream gauge 10, controls the flow velocity >=0.45m/s of liquid, wait to get rid of
Dense water without color time, stop flushing process, stand-by；
(5) evaluation is taken out: taking out diaphragm, microexamination diaphragm watch surface layer, punctation or line, then film occurs in surface layer
The desalination layer of sheet receives damage, for incomplete diaphragm；There is not punctation or line in surface layer, then diaphragm desalination layer is complete
Good lossless.
Described evaluation pond is that Flat Membrane evaluates pond.
Described film 5 is reverse osmosis diaphragm.
Concrete test fluid for different reverse osmosis membrane types, the concentration of test fluid, the pH value of test fluid, test time
Temperature, the flow velocity that shows of test pressure, concentrated stream gauge be shown in table 1 below:
Table 1:
Embodiment 4
As it is shown in figure 1, a kind of device detecting complex reverse osmosis membrane desalination layer integrity, including test fluid case 1 and test
Liquid case 1 is formed loop by pipeline 13, is connected with evaluating pond 6 by test fluid case 1 by pipeline 13 with temperature conditioning unit 11, and
The pipeline 13 of this connection is provided with Pressure gauge a4 and booster pump 2, booster pump 2 near test fluid case 1 end, Pressure gauge a4 with
Being provided with an opening between booster pump 2, this opening is connected with test fluid case top by pipeline 13, and at this opening and test fluid case
It is provided with stop valve 3 on the pipeline 13 of 1；Evaluating pond 6 and be internally provided with film 5 deposit position, the top in evaluation pond 6 is provided with and passes through
Liquid outlet 7, this permeate outlet 7 is connected with test fluid case 1 by pipeline 13；Evaluating and be additionally provided with dense water out on pond 6, this is dense
Water out is connected with test fluid case 1 by pipeline 13, and on this connecting pipeline 13 from the beginning of evaluating pond 6 end, is disposed with
Pressure gauge b8, pressure-regulating valve 9 and concentrated stream gauge.
Described evaluation pond 6 can also be used with pressure vessel and replaces.
Described film 5 is the one in reverse osmosis diaphragm, reverse osmosis membrane assembly.
The desalination layer of described film 5 is towards the water inlet evaluating pond 6.
It is important to point out at this, above-described embodiment be only limitted to technical scheme is further elaborated and
Illustrate, be not the further restriction to technical scheme.
Claims (6)
1. the method detecting complex reverse osmosis membrane desalination layer integrity, it is characterised in that comprise the following steps:
(1) preparation test fluid: it is 245-33000mg/L that water intaking and sodium chloride are configured to concentration, then is added thereto to rhodamine B,
And the mixing speed using mixing speed to be 300-400r/min is uniformly mixed, and control the addition of rhodamine B so that
After rhodamine B concentration in the solution is 190-210ppm, it is thus achieved that test fluid, and it is placed in test fluid case (1), adjusts pH
Value is 7.45-7.55, stand-by；
(2) film is installed: be arranged on by film (5) to be detected in evaluation pond (6) so that the desalination layer of film is towards evaluating pond (6)
Water inlet, stand-by；
(3) pressurization dyeing: open booster pump (2), it is 0.39-5.55MPa that adjustable cut-off valve (3) makes to test pressure, and controls
Temperature is 24.5-25.5 DEG C, maintains under constant temperature and pressure, runs 29-31min, then open stop valve (3) and pressure-regulating valve
(9), adjust Pressure gauge a (4) and the pressure≤10psi of Pressure gauge b (8), be then shut off booster pump (2), stand-by；
(4) rinse: the test fluid in test fluid case (1) is emitted, and be added thereto to clear water flushing test fluid case 3-4 time,
It is added thereto to clear water fuller to test fluid case (1), is then turned on booster pump (2), adjust stop valve (3) and pressure-regulating valve (9),
The pressure making Pressure gauge a (4) and Pressure gauge b (8) is 20psi, and passes through concentrated stream gauge (10), the flow velocity of control liquid >=
0.45m/s, when the dense water got rid of is without color, stops flushing process, stand-by；
(5) take out and evaluate: taking out diaphragm, microexamination diaphragm watch surface layer, punctation or line occurs in surface layer, then diaphragm
Desalination layer receives damage, for incomplete diaphragm；There is not punctation or line, the then intact nothing of diaphragm desalination layer in surface layer
Damage；
The device of detection complex reverse osmosis membrane desalination layer integrity, passes through pipeline including test fluid case (1) and test fluid case (1)
(13) form loop with temperature conditioning unit (11), by pipeline (13), test fluid case (1) be connected with evaluating pond (6), and
Being provided with Pressure gauge a (4) and booster pump (2) on the pipeline (13) of this connection, booster pump (2) is held near test fluid case (1), in pressure
Being provided with an opening between power table a (4) and booster pump (2), this opening is connected with test fluid case top by pipeline (13), and
This opening is provided with stop valve (3) on the pipeline (13) of test fluid case (1)；Evaluation pond (6) is internally provided with film (5) and deposits position
Putting, the top evaluating pond (6) is provided with permeate outlet (7), and this permeate outlet (7) is by pipeline (13) and test fluid case
(1) connection；Evaluating and be additionally provided with dense water out on pond (6), this dense water out is connected with test fluid case (1) by pipeline (13),
And on this connecting pipeline (13) from the beginning of evaluating pond (6) end, it is disposed with Pressure gauge b (8), pressure-regulating valve (9) and dense
Water ga(u)ge.
2. the method detecting complex reverse osmosis membrane desalination layer integrity as claimed in claim 1, it is characterised in that described comments
Valency pond is that Flat Membrane evaluates pond, hollow membrane evaluates the one in pond.
3. the method detecting complex reverse osmosis membrane desalination layer integrity as claimed in claim 1, it is characterised in that described film
(5) it is the one in reverse osmosis diaphragm, reverse osmosis membrane assembly.
4. the method detecting complex reverse osmosis membrane desalination layer integrity as claimed in claim 1, it is characterised in that described film
(5) when being reverse osmosis membrane assembly, described evaluation pond (6) is pressure vessel, and the putamina of reverse osmosis membrane assembly is safety glass, no
A kind of in rust steel, plastics makes.
5. the method detecting complex reverse osmosis membrane desalination layer integrity as claimed in claim 4, it is characterised in that described moulds
Material is ABS.
6. the method detecting complex reverse osmosis membrane desalination layer integrity as claimed in claim 1, it is characterised in that described comments
Valency pond (6) can also be used with pressure vessel and replaces.
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| CN109884076A (en) * | 2019-04-03 | 2019-06-14 | 吉安加仑膜环保科技股份有限公司 | A method of analysis reverse osmosis membrane salt rejection rate performance |
| CN112473391A (en) * | 2020-12-23 | 2021-03-12 | 安徽昂可特膜科技有限公司 | Method for repairing defects of reverse osmosis membrane |
| CN118883292B (en) * | 2024-09-23 | 2025-02-11 | 山东招金膜天股份有限公司 | Reverse osmosis membrane strength testing device and testing method thereof |
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| JPH06254358A (en) * | 1993-03-03 | 1994-09-13 | Toyobo Co Ltd | Detection of defect of reverse osmosis membrane |
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| CN1377724A (en) * | 2001-04-02 | 2002-11-06 | 上海邦尼科技发展有限公司 | Leakage detecting method for hollow fibre separation film assembly |
| CN101545797A (en) * | 2009-04-30 | 2009-09-30 | 上海交通大学 | Method for detecting compaction degree of screen in flat plate reverse osmosis or nano-filtration membrane equipment |
| CN202762319U (en) * | 2012-08-31 | 2013-03-06 | 陕西华诚首创环保科技有限公司 | Ultrafiltration membrane cleaning system |
| CN103551045A (en) * | 2013-11-11 | 2014-02-05 | 国家电网公司 | Dye determination method for oxidization condition of reverse osmosis membrane |
| CN204275822U (en) * | 2014-11-25 | 2015-04-22 | 贵阳时代沃顿科技有限公司 | A kind of checkout gear detecting complex reverse osmosis membrane desalination layer integrality |
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