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Deareation: Degasification of Water Using Novel Membrane Technology

From Membrana
 

 
Dissolved oxygen, nitrogen, and carbon dioxide are naturally present in water. Dissolved gases should be carefully monitored and controlled, as they can affect the products and processes in which the water is used. For example, dissolved oxygen can react with metals, forming an oxide layer on the surface of finished products or piping material. Also, as the water temperature is increased, dissolved gases can form bubbles that may lead to incomplete wetting of surfaces. The removal of dissolved gases is an important processing step and is routinely accomplished with a vacuum degasification column or with chemicals. Removal of specific gases, such as oxygen, can also be accomplished by stripping the gases from the water using a vacuum and/or an inert gas such as nitrogen. Membranes have been used to degasify water for more than 20 years in laboratory environments. One major drawback of the membranes has been their inability to handle industrial-size flowrates efficiently.
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Product Announcements
Membrana - Oxygen Removal from Water
Dissolved oxygen in a liquid stream can have many negative impacts on processes because it causes corrosion and oxidizes materials, such as piping and boilers. Liqui-Cel® Contactors are an... (read more)
Parker Hannifin Filtration and Separation Div. / Balston Products - Self Contained Membrane Nitrogen Generator
Parker Hannifin Corporation, the global leader in motion and control technologies, has introduced the Parker Balston NitroFlowLab self contained membrane nitrogen generator that will produce 99% pure... (read more)
Membrana - Debubbling
Bubbles often cause many process issues in analytical systems and process water systems if not removed. In analytical and measurement systems, bubbles can also have an unintended impact on readings. (read more)
Electro-Chemical Devices, Inc. - Triton DO8 Optical Dissolved Oxygen Analyzer
The ECD Triton DO8 optical dissolved oxygen sensor combines the high technology of Fluorescence Quenching with a rugged, easy to install design. The DO8 provides the best solution for long term... (read more)
Hach Company - HACH LDO - Process Dissolved Oxygen Probe
Breakthrough Luminescence Technology for Measurement of Dissolved Oxygen... (read more)
Membrana - Liqui-Cel®
Liqui-Cel® Membrane Contactors remove from or add gasses to liquids. They are widely used for O2 removal from water as well as CO2 removal from water. Membrane Contactors have displaced vacuum towers,... (read more)
Membrana - Nitrogenation
Processes can be improved by introducing nitrogen into fluids. Two such examples are Ultrasonic and megasonic cleaning. These processes are improved if the oxygen is removed, but some nitrogen is also... (read more)
 
Topics of Interest
Proper treatment of boiler feed water is an important component of a boiler system. As steam is produced, dissolved solids become concentrated and deposit inside the boiler. This leads to poor heat... (Read More)
Membrane Contactors have been used to remove dissolved oxygen in boiler feed water systems for years. This report reviews various system designs and discusses how Membrane Contactors can be optimized... (Read More)
Dissolved oxygen is a leading source of corrosion in water systems and it is carefully\ monitored and controlled in nuclear power plants. The Korean Electric Power Institute (KEPRI) has installed... (Read More)
In treating water for the production of pharmaceuticals, the concentration of gases dissolved in the water plays an important role. In many cases the CO2 content in the raw water has to be further... (Read More)
Proper treatment of boiler feed water is an important part of operating and maintaining a boiler system. As steam is produced, dissolved solids become concentrated and form deposits inside the boiler. (Read More)
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