Rodi with less waste decrease life of membrane and filter?

[Ninja120]

Hi researched and found that alot of rodi has waste of 1:4-6. I was wondering if the rodi that are high efficieny with waste of 1:1 or 1:2 membranes and filter need to be replaced more often?

[Cliff@AWI]

Originally Posted by Ninja120

Hi researched and found that alot of rodi has waste of 1:4-6. I was wondering if the rodi that are high efficieny with waste of 1:1 or 1:2 membranes and filter need to be replaced more often?

Yes the membranes will not last as long in general and in addition (and greater concern) cost wise is the membrane does not get the stated rejection rate meaning your di resin will be consumed faster thus costing you more per gallon of RODI.

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[Cliff@AWI]

If you have any questions call 772-461-0256

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[tkeracer619]

Yeah, unless there is good reason to reduce the ratio don't. Even on dual membrane setups 4:1 is ideal.

[Ninja120]

So I have been looking around and was curious how does the Spectrapure UHE produce a 1:1 but claims "without compromising membrane life or system reliability"?

[tkeracer619]

It back flushes the membrane with DI water periodically and uses a .2 micron sediment filter which reduces clogging. Look at the disclaimers on the bottom of their website regarding that unit.

If you want a 1:1 unit it is best to operate it behind whole house carbon and a water softener.

[Ninja120]

Originally Posted by tkeracer619

It back flushes the membrane with DI water periodically and uses a .2 micron sediment filter which reduces clogging. Look at the disclaimers on the bottom of their website regarding that unit.

If you want a 1:1 unit it is best to operate it behind whole house carbon and a water softener.

I tried looking for the disclaimer, but only saw not recommended for drinking. I also states it increase membrane life.