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Summary of Contents for 3M MEMBRANA Liqui-Cel
- Page 1 Cleaning Guidelines...
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Page 2: Table Of Contents
B. Final Drying ---------------------------------------------------------------------------------------------- 20 C. Drying Schematics ------------------------------------------------------------------------------------- 20 Membrane Contactor Integrity Test ---------------------------------------------------------------------- 22 Storage and Handling Guidelines ------------------------------------------------------------------------ 23 XII. Contactor Decontamination for Return to 3M -------------------------------------------------------- 24 TABLES Table 1 Sanitizing Guidelines-------------------------------------------------------------------------------- 4 Table 2 Cleaning Solution Flow Rate and Backpressure Guidelines ------------------------------ 7... - Page 3 Use in any other application may not have been evaluated by 3M and may lead to an unsafe condition. Explanation of Signal Word Consequences...
- Page 4 To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open at atmospheric pressure.
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Page 5: Intent Of Document
Generally, the cleaning frequency can be determined by monitoring a decrease in system gas transfer efficiency or increase in pressure drop in liquid or gas phases. For general questions about chemical resistance, refer to the Liqui-Cel Membrane Contactor Chemical Resistance Guide available at www.liqui-cel.com or contact a 3M representative. -
Page 6: Chemical Compatibility/Sanitization/Detergents
Cleaning Guidelines Liqui-Cel Membrane Contactors ® III. Chemical Compatibility/Sanitization/Detergents NOTICE Avoid contacting membrane to surfactants or solvents to prevent membrane wet-out. Do not expose membrane to oxidizing species such as ozone, chlorine, hydrogen peroxide, peracetic acid, etc. to prevent membrane oxidation. Table 1 shows the maximum recommended exposure times for several chemicals, which can be ®... - Page 7 Cleaning Guidelines Liqui-Cel ® Membrane Contactors Case 2 illustrates a cleaning protocol that we DO NOT RECOMMEND. Case 2: 200ppm peracetic acid sanitization every day for 30 minutes. a) What is the total exposure time for a solution of peracetic acid at 200ppm concentration at room temperature? b) What is the maximum number of 30 minute cycles that the contactor can be subjected to using this solution at room temperature?
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Page 8: Cleaning Solution Flow Rate And Backpressure Guidelines
To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open to atmosphere. -
Page 9: Cleaning Solution Flow Rate And Backpressure Guidelines
Cleaning Guidelines Liqui-Cel ® Membrane Contactors Table 2: Cleaning Solution Flow Rate and Backpressure Guidelines Cleaning Solution Cleaning Solution Contactor Size Flow Rate on Shell Side Flow Rate on Lumen Side ≤ 0.08 gpm ≤ 0.13 gpm ® MiniModule (≤ 300 ml/min) (≤... -
Page 10: Cleaning The Membrane
To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open to atmosphere. -
Page 11: Sanitization Of The Cleaned Membrane
Cleaning Guidelines Liqui-Cel ® Membrane Contactors described below it is assumed that cleaning is done only on the water-contact side of membrane. In some cases the gas side of the membrane may also have to be cleaned. All solutions should circulate on the shellside unless there is a special need to clean the lumenside. - Page 12 To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open to atmosphere.
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Page 13: Biological Soil Removal
Therefore, the contactor must be dried before it is put back into service. Contact a 3M representative to learn more about contract cleaning services available in our facility for your convenience. -
Page 14: Illustration 1 Flow Schematic For Normal Biological Soil Removal
Cleaning Guidelines Liqui-Cel Membrane Contactors ® Table 5: Severe Fouling Procedure Step Description / Flow Schematic Chemical Solution Time Water flush/Once-through Filtered (10 micron) water 5 min 15 min – 2 hrs. Wet-Out Membrane Isopropanol (IPA) or 2-Propanol Pressurize shell side up to the max allowable operating pressure for the contactor and let liquid come out of lumen... -
Page 15: Illustration 2 Flow Schematic For Severe Biological Soil Removal
Cleaning Guidelines Liqui-Cel ® Membrane Contactors Illustration 2: Flow Schematic for Severe Biological Soil Removal Flow Indicator Pressure Gauge Drain Valve Drain Drain... -
Page 16: Cleaning Protocol For Mineral Deposits Removal
To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open to atmosphere. -
Page 17: Cleaning Protocol For Mineral Deposit Removal
Cleaning Guidelines Liqui-Cel ® Membrane Contactors Table 6: Cleaning Protocol for Mineral Deposit Removal Step Description / Flow Schematic Chemical Solution Time (min.) Water flush/Once-through Filtered (10 micron) water 5 min 5% w/w citric, or 3% Nitric or phosphoric, or a Acid wash / recirculate (repeat if 30 min to 2 combination of 3% Nitric and 3% phosphoric acid solution... -
Page 18: Cleaning Protocol When Particle Fouling Is Suspected
To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. If cleaning the shellside of the membrane only, the lumenside should be open to atmosphere. -
Page 19: Illustration 4
Cleaning Guidelines Liqui-Cel ® Membrane Contactors Illustration 4 = Flow Indicator Recirculation = Pressure Gauge = Valve Once- through Drain Drain... -
Page 20: Membrane Drying
WARNING To reduce the risks associated with explosion: Never exceed maximum temperature and pressure ratings. Detailed temperature and pressure ratings can be found in the Operating Guide at www.3m.com/liqui-cel. CAUTION To reduce the risks associated with damaging the membrane contactor: For all 2.5x8-inch, 4-inch and 10-inch membrane contactors, gas side pressure should... -
Page 21: Final Drying
Cleaning Guidelines Liqui-Cel ® Membrane Contactors B. Final Drying The final drying step involves flowing a clean, dry, filtered (0.2 micron) gas into the top shellside port. Using a warm gas will reduce drying time. Nitrogen is preferred in the final drying step as hot air can shorten the membrane life. -
Page 22: Illustration 6 Final Drying
Cleaning Guidelines Liqui-Cel ® Membrane Contactors Illustration 6: Final Drying Hot filtered gas F = Flow Indicator Typically 122 °F (50 °C)* P = Pressure Gauge = Valve Lumenside Maximum Gas Pressure = 10 psig (0.70 kg/cm Lumenside Close liquid outlet port so gas is forces to exit through the gas ports... -
Page 23: Membrane Contactor Integrity Test
If the contactor drips at a higher rate than the value listed in Table 11, either the cleaning protocol needs to be repeated, a fiber is broken or a seal is damaged. Contact a 3M representative for additional help. -
Page 24: Storage And Handling Guidelines
The following guidelines are intended to provide a framework for successful storage of these contactors. If you have any questions, please contact your 3M representative. Handling: Proper handling of contactors is critical. Care must be taken not to hit or jar (shock) the contactor to minimize the possibility of internal damage. -
Page 25: Contactor Decontamination For Return To 3M
XII. Contactor Decontamination for Return to 3M In the event that a contactor needs to be returned to 3M for analysis, it must be cleaned and dried. A Returned Material Authorization (RMA) form must be obtained from 3M before a contactor is returned. - Page 26 Limitation of Liability: Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability.
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