RO unit
 

Well I finaly built my own RO to my specifications. I had a few problems to overcome as I onlu had 40PSI water pressure at the new house.

what I ended up making was a dual 160GPD membrain unit with a variable density whole home prefilter (starts at 25 microns and ends up at 1) dual carbon block and DI for a final polish.

here is the prefilter, it is the same hight as a normal filter but has a diamiter of 4" instead of 1.5"
http://members.shaw.ca/stircrazy/ro/prefilter.jpg

here is the main unit
http://members.shaw.ca/stircrazy/ro/rounit.jpg

and this is the pump I ended up having to get to power a 320 GPD setup to 100PSI
http://members.shaw.ca/stircrazy/ro/newpump.jpg

I am only running it at 85PSI right now and my output is 220GPD with realy cold water.

Steve

That looks great Steve, good job :biggrin: i will need to chat up RODI units with you soon!

Steve
 

Whats it that unit in that last picture? Looks like a furnace fan motor attached to something. Can you please explain what it is because I'm looking to set something like that up myself.

Re: Steve
 

that is a 1/3 HP motor powering a high volume/pressure ceramic pump with a internal relife. first measure your water pressue and decide on the flow you want and you most likely won't need a pump this big.

Steve

you must be bored STEVE you cease to amaze me ''''' :cool:

How much and where did you get the pump?

you don't want to know :wink: seriously, new this pump set up goes for almost 700.00 (retail)I got it a fair bit cheeper than that though. (it was used and I cut a deal.) The pump is actualy off a comercial unit that was assembled to fill a fish tank in the toronto airport last month. that was a 500 gal per day set up which I could probably get you a real good deal on :mrgreen:

I do know that I was able to spiked my old 100 GPD membrain at over 300 PSI :mrgreen: when I was getting a ball park setting, I wanted to do it on the old ones so I didn't take a chance of destroying my new ones hehe.

for most people aquatec makes some good pumps that will run 100GPD membrains no problem and they can be had for 200.00ish, I had to go with the binford cuz the aquatec pumps wern't big enuf to run 320 GPD membrains at 100 PSI.

Steve

LOL

Seriously what is the pump and the specs? Post some info when you get a chance (even if it is a $700 pump or whatever) .... kinda curious

nice setup there steve

how much is the ratio of the waste water?

it works out to be about 2 to 1 but that is because of the configuration of the membrains, each membrain sees a 4 to 1 ratio.

Tony I will get the info when I get back for ya.

Steve