I made this hose filter from stuff laying around my shop, planning to use as a trickle. Is there any information available that will tell me how many gallons of chlorinated water I can expect to treat with 12 ounces of activated carbon?
I made this hose filter from stuff laying around my shop, planning to use as a trickle. Is there any information available that will tell me how many gallons of chlorinated water I can expect to treat with 12 ounces of activated carbon?
Last edited by steve258; 10-02-2018 at 06:41 PM.
Not very much. I use a larger carbon filter and also removes cholamine
How large? And how many gallons will it treat?
I feel this should do the work and kinda affordable
Catridge last apx 6months or 20-30k gallons
https://www.amazon.com/Whole-Filter-.../dp/B01MG52PQT
i guess i don't understand the carbon filter properly. What is the difference between using one of the canister filters above and just trickling water through a carbon supply? How much carbon is in a canister filter that supposedly lasts 20-30,000 gallons?
Not quite sure why that one is in the DIY section.
Any number of manufacturers make models that remove chlorine and chloramines. I was using one from the Clean Water Store out of Santa Cruz, as I recall. Make sure to get one that will filter out chloramines, if you need it. For the model I'm linking, it would be the catalytic carbon for chloramines.
https://www.cleanwaterstore.com/carb...-cf-23685.html
I opted for the 2.0 cf model but linked a 1.5cf model.
A bit late, but in case someone else needs this answered...
The important difference between the large canister filter and trickling water through a carbon supply is dwell time.
Even catalytic carbon, which breaks down chloramine, needs about 15minutes of contact time to properly do its job.
Dwell time is the amount of time it takes for a unit of water to completely pass through a filter.
In a smaller filter, the contact time may be insufficient - especially in a constant flow situation.
Thanks for your reply. When using the canister filter, are you saying it takes 15 minutes to get a trickle of water out of the filter from the time you initially turn on the water supply?
..... as I sit pondside this morning with my cup of coffee, thinking about how it was made. Through a drip drip coffee maker. Hmmm...
Last edited by steve258; 03-26-2019 at 08:03 AM.
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Steve
Allentown, PA USA
Apologies. Was travelling the past week.
A 14" x 65" cylinder holds 40 gallons of water. A typical tap flows 2.5gpm unrestricted.
That's 16 minutes to fill an empty cylinder. You could thus say that the average unit of water stays in the cylinder for 16 minutes before exiting.
Filling the cylinder with media reduces water volume, but also increases back pressure and drops flow rate. A typical fill quantity for a cylinder this size is 3 cubic feet.
These systems are usually upflow - which means that upon initial charging, the cylinder is always full of water. Naturally this means you do not need to wait for the cylinder to fill again before it releases treated water.
If you do not use more than 1 cylinder's worth of water at a go, the dwell/contact time of the water with media is massively increased. That is something worth considering if you find a 40 gallon cylinder too massive for your purposes.