Richi888
New Member
Hi, whats the minimum microns filter capacity a sintered activated carbon block filter should have? Is it 10 or is 20 um still okay at a country with very high chlorine concentration in feed water?
Minimum microns of activated carbon block for RO system
- Thread starter Richi888
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Some info
chlorine removal
Particle size:
Activated carbon is commonly available in 8 by 30 mesh (largest), 12 by 40 mesh (most common), and 20 by 50 mesh (finest). The finer mesh gives the best contact and better removal, but at the expense of higher pressure drop. A rule of thumb here is that the 8 by 30 mesh gives two to three times better removal than the 12 by 40, and 10 to 20 times better kinetic removal than the 8 by 30 mesh.
Flow rate:
Generally, the lower the flow rate, the more time the contaminant will have to diffuse into a pore and be adsorbed. Adsorption by activated carbon is almost always improved by a longer contact time. Again, in general terms, a carbon bed of 20 by 50 mesh can be run at twice the flow rate of a bed of 12 by 40 mesh, and a carbon bed of 12 by 40 mesh can be run at twice the flow rate of a bed of 8 by 30 mesh. Whenever considering higher flow rates with finer mesh carbons, watch for an increased pressure drop!
chlorine removal
Particle size:
Activated carbon is commonly available in 8 by 30 mesh (largest), 12 by 40 mesh (most common), and 20 by 50 mesh (finest). The finer mesh gives the best contact and better removal, but at the expense of higher pressure drop. A rule of thumb here is that the 8 by 30 mesh gives two to three times better removal than the 12 by 40, and 10 to 20 times better kinetic removal than the 8 by 30 mesh.
Flow rate:
Generally, the lower the flow rate, the more time the contaminant will have to diffuse into a pore and be adsorbed. Adsorption by activated carbon is almost always improved by a longer contact time. Again, in general terms, a carbon bed of 20 by 50 mesh can be run at twice the flow rate of a bed of 12 by 40 mesh, and a carbon bed of 12 by 40 mesh can be run at twice the flow rate of a bed of 8 by 30 mesh. Whenever considering higher flow rates with finer mesh carbons, watch for an increased pressure drop!
Richi888
New Member
Lets assume from the tap comes 2,90589 gallons (11 L/min) at 43 PSI (3 Bar) straight into sediment filter, then carbon filter, then again a sediment filter.
I need at least >= 30 PSI AFTER those three prefilters in order to feed the pump.
I want to remove chlorine so that my membrane is protected.
What carbon filter would you recommend?
I need at least >= 30 PSI AFTER those three prefilters in order to feed the pump.
I want to remove chlorine so that my membrane is protected.
What carbon filter would you recommend?
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