DI Units pros...cons...etc

[Darrell Ward]

If you go with a "DI only" approach, yes, you'll go through DI resin quickly.

Does resin take out ntrates? Yes.

Your nitrates are above the EPA limit for safe drinking water (10 ppm).

Russ

....Along with probably half the population that has a well in the Eastern US. LOL!

[Darrell Ward]

Here is a link to the Kent Deion you were looking for....http://www.petsolutions.com/storefro...Deion200R.html

[Buckeye Field Supply]

....Along with probably half the population that has a well in the Eastern US. LOL!

That may be - but not a laughing matter. Nitrates are bad news in high concentrations, especially for infants. Don't ignore the presence of high nitrates in your drinking water.

[Buckeye Field Supply]

Couple of thoughts re that separate bed deionizer.

1. Its is WAY over priced.
2. It is uncommon for anion and cation beads to have the same capacity, so in the separate bed systems we design for instance, we don't use equal quantities of anion and cation resin.
3. You'd want a sediment filter ahead of the carbon block.

Russ

[D9VIN]

Maybe run a 5 micron to 1 micron to carbon block to di? Would that give the resins a decent lifespan? Or not make much difference? Could I use a 'di add on unit' designed to go after ro?

[Buckeye Field Supply]

Remember that prefilters (sediment filters, carbon blocks) don't remove TDS - so although they would protect the resin from sediment and from VOC's including chlorine, no, they wouldn't have much effect on the DI resin lifespan.

Russ

[Sean Buehrle]

Maybe run a 5 micron to 1 micron to carbon block to di? Would that give the resins a decent lifespan? Or not make much difference? Could I use a 'di add on unit' designed to go after ro?

Yes you Can use an add on di after the ro, that's the only place you should use one at.

A di chamber is used to make near pure water from an ro filter pure, any other use is just a waste and very expensive.

If you tried to use a sediment filter with a di cartride you would be lucky to get 10 gals out of it.

There's no way around it.

[D9VIN]

So ro is really the only effective way to lower tds? There is no other filter that has no waste for hardness?

[Sean Buehrle]

So ro is really the only effective way to lower tds? There is no other filter that has no waste for hardness?

I'm pretty sure there's not, nope.

[DiscusOnly]

So ro is really the only effective way to lower tds? There is no other filter that has no waste for hardness?

All RO unit that I know of will produce waste water (some better than others). People use various ways to collect the waste water for other usages. There is a zero waste retrofit kit sold by WATTS that will pump the wate water into your hot water heater line. https://www.wattspremier.com/product...e-Retrofit-Kit

It sounds interesting for the low production system but I doubt it's effective for someone who is producing 100+ gallons per day.

Van

[pennex1]

How much waste water is produced per 10 gallons of RO/DI water? I am thinking about purchasing a unit from one of the sponsor but if i am going to produce 10 gallons of waste water per 10 gallons of RO/DI water, that would be alot of wasted water.

[DiscusOnly]

How much waste water is produced per 10 gallons of RO/DI water? I am thinking about purchasing a unit from one of the sponsor but if i am going to produce 10 gallons of waste water per 10 gallons of RO/DI water, that would be alot of wasted water.

It really depends on the quality of the RO unit, your water pressure, water temperature, what TDS you start out with and whether it's a "zero waste" system. You could see as much as 100 gallons of waste for a bad system.

Van

[D9VIN]

But from what I understand, a 'good' ratio would be 2:1 waste ie for every 10 gallons produced, 20 gallons wasted.

[DiscusOnly]

But from what I understand, a 'good' ratio would be 2:1 waste ie for every 10 gallons produced, 20 gallons wasted.

2:1? That would be great and I would call it exceptional. Most system are usually classify as 4:1

[pennex1]

that is a lot of waste. can the waste be circulate back and go through the RO process again? have to rethink this.