bobtheUKbrewer2
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Hello - has anybody tried slowly passing water through a home made column of GAC ? I only need 11 gals water every 14 days.
Chloramine removal with granular act. charcoal
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It can be done, but the flow rate has to be very low in order for the water to have a long enough contact time.
The flow rate necessary to remove chloramine has to be low enough to produce an Empty Bed Contact Time (EBCT) of at least 8 minutes to be safe. The EBCT is easy to calculate. Figure out the volume of carbon that you will be using in your column...diameter x the height of the carbon mass. Then divide that value by the minimum EBCT (8 minutes) and that provides a flow rate which you must be under to achieve the desired full removal of chloramine. So if you calculate the carbon volume in liters, your resulting flow rate will be in terms of liters/min.
Yes, the flow rate will be very slow. Sorry! Chloramine removal with carbon is not very effective and it requires the very slow rate. For chlorine, the EBCT can be much less...like around 1 to 2 minutes. So you can see the problem with this treatment method for chloramine. You may want to consider metabisulfite as a quicker removal method.
The flow rate necessary to remove chloramine has to be low enough to produce an Empty Bed Contact Time (EBCT) of at least 8 minutes to be safe. The EBCT is easy to calculate. Figure out the volume of carbon that you will be using in your column...diameter x the height of the carbon mass. Then divide that value by the minimum EBCT (8 minutes) and that provides a flow rate which you must be under to achieve the desired full removal of chloramine. So if you calculate the carbon volume in liters, your resulting flow rate will be in terms of liters/min.
Yes, the flow rate will be very slow. Sorry! Chloramine removal with carbon is not very effective and it requires the very slow rate. For chlorine, the EBCT can be much less...like around 1 to 2 minutes. So you can see the problem with this treatment method for chloramine. You may want to consider metabisulfite as a quicker removal method.
