150 GPD for RO Drinking System?

[bozo]

Where is @AZDesertRat ?

MIA?

Anyway.

I need to install a RO system for my drinking water.

I haven't moved into the new place yet, but I suspect the PSI could be low. I'm assuming its like 40-50 psi.

I'm used to having 100 PSI coming into my house.

SO a few questions.

1. At which stage do I install the booster pump? Before or after the SED?

2. Do I need a 150 GPD membrane at all? The only reason I want to use this is to lower the rejection rate.

3. If I am going to use a 150 GPD membrane, should I use a larger holding tank like 11 gallons to make it worth my time?

Thanks!

 

[theMeat]

To cut waste water down 150gpd systems use 2 75gpd membranes. The waste water from the first membrane goes to the second one.

How many gallons you want in storage is only something you know. I’d say too much in storage leads to dirtier storage, more cleaning of container.

IMO booster pumps are good, so are 150gpd systems. But with a single membrane 75gpd or less system you could get away with 45psi and have a long lived simple system. Works for me on my 220gal.

Some booster pumps go before auto shut off pressure switch. Some before everything, meaning between tap water and RODI unit

Just want to note that for drinking water you should tee off before di resin