RO/DI output

R

Rudy

Over my head
Dec 3, 2002
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Quick question - how much unfiltered H20 residue, technically referred to as "The Brine" I believe, should I expect to produce for every gallon of RO/DI H20?

I have a feeling there is something wrong with my RO/DI because I am getting a hugely disproportionate amount of the former "Brine".

Please advise so I may plan and act accordingly, i.e. buy a new RO/DI, or try to rehab the one I have.

Kind Regards,
 
What do you mean,
tidioute06 said:
I've ran RO soo I'm not entirely sure.
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without the DI component? Does it produce less waste water. H20 is too expensive in my town to be wasting gallon upon gallon of water. If eliminating the DI component will make a significant difference, I'll gladly do it.
 
The RO membrane is the component producing the waste. Typically it's 1 part RO product to 4 parts waste. So, for every gallon of RO you produce, you'll get 4 gallons of waste. What is your feed PSI? Sometimes a boost pump (100 PSI) can help with production. Very cold water hinders production and creates more waste as well.

Hope that helps!
 
PSI is not an issue, but the water is cold. Regardless, a 1:4 ratio is a ridiculous waste of water, which I have difficulty justifying with the price of H20. What do people do with all the apparent waste water? It would take an awful lot of houseplants constantly being watered to utilize.

Ugh :(
 
Sorry I meant haven't.
You could water the lawn with it!
Massachusetts water is that expensive? I used 20,000 gallons a month in NC and my bill like was like $25.00
 
tidioute06 said:
Sorry I meant haven't.
You could water the lawn with it!
Massachusetts water is that expensive? I used 20,000 gallons a month in NC and my bill like was like $25.00
Click to expand...


It is expensive enough, anyway. Water the lawn with it? How, string a garden hose attached to a pump from the basement 55 gal waste drum? Even if I had a practical use, like washing the car(s) with it, it seems the waste water would far exceed the practical usage?

So to fill my 30 gal drum to support my monthly water change it will take at least 3 other 55 gallon drums of waste water. When I look at it this way it really bothers me. Or, can I recycle the waste water through again and again? he he he
Why is everything so complicated. LOL :hypnotized:
 
plants, lawns, gardens, soaking dirty dishes, washing cars, heck, even using it to flush a toilet (not sure I have actually heard of anyone doing that, just a thought of how to use the waste water).

Depends how how big your tank is and how big of water changes you do, but when I figured it out on my tank, 2 showers = more water than the waste water from my RO/DI in a month.
 
So to fill my 30 gal drum to support my monthly water change (230 gal DT with 125 sump (partially filled so more like 75 gal) it will take at least 3 other 55 gallon drums of waste water. When I look at it this way it really bothers me. Or, can I recycle the waste water through again and again? he he he

As far as watering plants etc. I would have to have a tropical rain forest in my house to use all that water. :rofl:

The fact everything else is located away from where my waste water would be collecting (basement) is another complicating factor

It is never easy, is it? :irked:
 
30 Gallons? Your worried about 30 Gallons in a month (120G-160G waste water)? I do 30G a WEEK on my 75G/29G tanks. :rofl:

When I did have a water bill, with 3 people living in a house, it ran about $120 a month.

Edit: Oh ya, there is such thing as 0 Waste Water RO/DI units out there.
 
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