re: uv water purification
22 apr 2004
jerry ellinghuysen wrote:
>my biggest issue has been that most uv emitters life span are severely
>shortened by turning off and on.
about 6 minutes per turn-on?
>the watt draw isn't big, but its continual.
i seem to recall about 100 watts and a yearly $100 bulb replacement.
>my thoughts right now is that its best to bit the bullet and design
>such that the uv light remains on full time.
as i recall, warmup takes about 2 minutes, which seems to indicate
a need to store a 2-minute water flow, eg 20 gallons.
>what i really would like to do is use ozone in a holding tank, followed
>by uv at point of entry into the house. this removes residual ozone and
>acts as a final bactericide.
uv removes ozone? why remove it? it might help
prevent regrowth of bacteria downstream...