2 ms·

I looked it up - the 4:1 is the ratio of waste water to purified water. I wonder if it is possible to apply it in grey-water applications at least - although si

I looked it up - the 4:1 is the ratio of waste water to purified water. I wonder if it is possible to apply it in grey-water applications at least - although situations where you need that much greywater are probably pretty rare. Personally I am of the point of view of "Upgrade the damn water infastructure already! There is ample demand for pure and better tasting water and it would benefit from scale compared to a household level."

shagie 5y ago
> I wonder if it is possible to apply it in grey-water applications at least - although situations where you need that much greywater are probably pretty rare. Use it to flush the toilet or do laundry. This is a very light gray water. It isn't "water that went down the sink" or "water that was used to wash clothes". It's "water that has a slightly higher concentration of what isn't in the RO water.
- VikingCoder 5y ago
  Right, like is there a RO system that provides tap water for drinking, and returns the "waste" to your hot water heater for everything else?
  - shagie 5y ago
    I want to say "that's not a function of the RO system, but rather an added complication to the rest of the water system in the house." It is similar (to an extent) as the collection of rainwater for similar non-potable applications. This means running multiple water systems through the house. Hot, tap cold, non-potable, filtered. One could combine the tap cold and non-potable to simplify the use. But it's the same problem (and solution) of using rain water as non-potable and RO waste water as non-potable.
tgsovlerkhgsel 5y ago
Assuming the filters don't add extra pollutants, the "bad" water would only have 25% more of whatever is in the input. If the input is just barely not good enough for drinking, the "bad" water is probably still good for showers.

2 ms·

I looked it up - the 4:1 is the ratio of waste water to purified water. I wonder if it is possible to apply it in grey-water applications at least - although si

by Nasrudith 5y ago

shagie 5y ago
> I wonder if it is possible to apply it in grey-water applications at least - although situations where you need that much greywater are probably pretty rare. Use it to flush the toilet or do laundry. This is a very light gray water. It isn't "water that went down the sink" or "water that was used to wash clothes". It's "water that has a slightly higher concentration of what isn't in the RO water.
- VikingCoder 5y ago
  Right, like is there a RO system that provides tap water for drinking, and returns the "waste" to your hot water heater for everything else?
  - shagie 5y ago
    I want to say "that's not a function of the RO system, but rather an added complication to the rest of the water system in the house." It is similar (to an extent) as the collection of rainwater for similar non-potable applications. This means running multiple water systems through the house. Hot, tap cold, non-potable, filtered. One could combine the tap cold and non-potable to simplify the use. But it's the same problem (and solution) of using rain water as non-potable and RO waste water as non-potable.
tgsovlerkhgsel 5y ago
Assuming the filters don't add extra pollutants, the "bad" water would only have 25% more of whatever is in the input. If the input is just barely not good enough for drinking, the "bad" water is probably still good for showers.