Low energy use high flow water filtration for off grid applications (UV or otherwise)
A bit off topic perhaps, but I’m hoping someone on here has some experience with water filtration that I could leverage.
We are building an off-grid campground and will be taking water from a creek so will need some sort of filtration system for our guests’ drinking water. The water is crystal clear and runs straight down from the snow pack and we drink it all the time to no ill effects (and we will be running it through a sand filter) but, out of abundance of caution, we are planning on installing a filtration system serving the central toilet and kitchen facilities.
My initial thoughts (and still the way I’m leaning) is a UV filter but, based some preliminary research, it looks like most UV filters run the light 24/7 which (at the peak draws we need to meet) seems like a good way to waste limited solar resources.
I’ve found some smaller on demand LED based units but nothing with the roughly 15-20 gpm peak filtration rates we’re targeting. Does anyone have familiarity with larger systems that will run only when water is flowing?
An alternative is to buy a smaller unit and store the filtered water but this might end up with a pretty big tank and, if I’m going to go to the trouble of installing storage, I think I’d still like a larger intermittent system so I can I can charge the storage when the sun is shining and the batteries have a high state of charge.
Anyhow, any thoughts on low energy use filtration approaches (and or recommendations for high flow intermittent UV filters) would be appreciated.
Note: the system has plenty of water available (though water conservation and effluent disposal is a concern) at about 60 psi.
Thanks in advance.
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