Editing RO systems
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The RO membrane removes dissolved minerals and other contaminants from the water.<ref name=bhfaq/> There are two types of RO membranes: thin film composite (TFC) and cellulose triacetate (CTA). TFC is preferred because it has a higher rejection rate and longer lifespan.<ref name=screwy>[https://www.thescrewybrewer.com/2014/07/pure-brewing-water-using-reverse-osmosis.html Pure brewing water using reverse osmosis.] The Screwy Brewer website. July 2014. Accessed October 2020.</ref><ref>Sagle A, Freeman B. [https://www.twdb.texas.gov/publications/reports/numbered_reports/doc/R363/C6.pdf Fundamentals of membranes for water treatment.] ''The future of desalination in Texas.'' 2004;2(363):137.</ref> FilmTec™ membranes for example are among the most reliable and consistent TFC elements in the industry.<ref name=ami/> Be wary when purchasing a system if it doesn't specify what type of membrane is included. | The RO membrane removes dissolved minerals and other contaminants from the water.<ref name=bhfaq/> There are two types of RO membranes: thin film composite (TFC) and cellulose triacetate (CTA). TFC is preferred because it has a higher rejection rate and longer lifespan.<ref name=screwy>[https://www.thescrewybrewer.com/2014/07/pure-brewing-water-using-reverse-osmosis.html Pure brewing water using reverse osmosis.] The Screwy Brewer website. July 2014. Accessed October 2020.</ref><ref>Sagle A, Freeman B. [https://www.twdb.texas.gov/publications/reports/numbered_reports/doc/R363/C6.pdf Fundamentals of membranes for water treatment.] ''The future of desalination in Texas.'' 2004;2(363):137.</ref> FilmTec™ membranes for example are among the most reliable and consistent TFC elements in the industry.<ref name=ami/> Be wary when purchasing a system if it doesn't specify what type of membrane is included. | ||
Home RO membranes have different production flow (flux) ratings that indicate how quickly purified water is produced, typically ranging from 24 to 100 gallons per day (gpd). Lower flux membranes have | Home RO membranes have different production flow (flux) ratings that indicate how quickly purified water is produced, typically ranging from 24 to 100 gallons per day (gpd). Lower flux membranes have a higher rejection rate, and the lower flow rate also improves the effectiveness of the carbon filters due to longer contact time. For these reasons, it's best to choose the lowest flux membrane that can keep up with demand. Be aware that the actual performance of your system won't exactly match the manufacturer flux rating because your system will have different operating conditions from factory specification.<ref name=filmtec/><ref name=ami>[https://www.appliedmembranes.com/filmtec-membranes-residential-home-ro-membranes.html Dow FilmTec home RO membrane elements.] Applied Membranes Inc. website. Accessed September 2020.</ref> | ||
The RO membrane cartridge has a small outflow orifice (flow restrictor) to limit the waste flow and create a high pressure on the membrane.<ref name=water>Palmer J, Kaminski C. [[Library|''Water: A Comprehensive Guide for Brewers.'']] Brewers Publications; 2013.</ref> This component is paired with the particular membrane flux, so if you decide to switch to a different RO membrane flux at some point, the flow restrictor will also need to be changed. | The RO membrane cartridge has a small outflow orifice (flow restrictor) to limit the waste flow and create a high pressure on the membrane.<ref name=water>Palmer J, Kaminski C. [[Library|''Water: A Comprehensive Guide for Brewers.'']] Brewers Publications; 2013.</ref> This component is paired with the particular membrane flux, so if you decide to switch to a different RO membrane flux at some point, the flow restrictor will also need to be changed. |