Ro/Di - Float Switch Arrangement

[Joeg]

Hoping someone can help me with a design question. I have my ro/di unit in the basement and am trying to come up with an arrangement of holding tanks that allows me to capture both the ro/di water plus the 'grey' water that the ro/di unit generates so I can use it in my washing machine. Up until now I've been routing the grey water directly into the washing machine but as you can imagine the other night I forgot to set a timer on my phone and let it run too long which resulted in a wet floor.

If I run the output of the grey and ro/di water into 2 separate containers do I just need to add a float switch to each of them or is there another way I need to approach this? Just having a hard time wrapping my head around what might happen when one container is full but the other is not.

 

[buckroe07]

If you have the float valve in the treated water reservoir, once the float activates, it should shut off the unit and prevent the waste water from continuously running.

 

[AZDesertRat]

Keep in mind your waste or brine will be 3-4 or more times as much as your treated or permeate. You will want a waste container at least 5 times larger than your treated container, something like a blue poly 30-55 gallon drum usually works well if your treated is only 5-10 gallons at a time. I would also plumb an emergency overflow from the waste barrel to a drain or sump if it were me just in case.

 

[Joeg]

Thank so much for the info buckroe07 & AZDesertRat. I had a feeling I was over-complicating things. Parts are on the way so I'll see if I can make a mess next week