ro water saving idea
- Thread starter little_squid
- Start date
AnnArborBuck
New member
Wow, I think Jim probably gets the point. Pesky decimal places.
AnnArborBuck
New member
Oh, for those of you with really high waste rates looking into getting a seperate meter from you local water utility for your outdoor water useage. it can make a huge difference in your bill if you like to water you grass or wash your car alot.
Roland Jacques
Premium Member
<a href=showthread.php?s=&postid=7593416#post7593416 target=_blank>Originally posted</a> by jdieck
Well regarding the measurment it is not so. Put the blame on the engineers that set the standards without knowing what a ruler is but believe it or not the ID of a 1/8" MNPT fitting is even larger than the ID of a 1/4" tubing.
I also hope you use more water
good photos but those are the outside diameters. i was refering to the ID inside dia. where the water has to flow though. That .125" ID and pressure could have been the limiting factor as to how many membranes can be run in series. but jim proved it non relavant in his test (54gph at 100psi).
like you said earlyer the membranes are the limiting factor i just wanted to be sure.
fahz
Premium Member
I wasn't sure but unrestricted you can pass a lot water through 1/4" tubing. The membrane and flow restrictor are the limiting factors for sure. The two membranes in series produces in four hours what it use to take me twelve to produce for a water change and with a lot less waste.
Jim
Jim
OKAY everyone. Get this, I live in Weston which is a suburb of wausau and the water is higher than wausau. I only have wausau on my info because most people know where you are from is wausau is said. If I say weston, peo0ple say "WHERE?"
Either way though, to put all B.S. aside, the cost is a secondary to me. I just hate the fact of wasting water. I end up with so much waste water that I can't use it all and I end up dumping it down the drain.
Either way though, to put all B.S. aside, the cost is a secondary to me. I just hate the fact of wasting water. I end up with so much waste water that I can't use it all and I end up dumping it down the drain.
BeanAnimal
Premium Member
Sadly Jdieck.... those are not my water rates. Those or the CITY OF PITTSBURGH. I live in GREENTREE BORO (4 feet of my property are in the city actually). My combined water rates are those listed above ($10 per 1000 gallons) and will be going up at least 5% this year (with the proposed 37% increase as the goal over 2-3 years... not sure what was accepted by the PUC).
My water is provided by the Pennsylvania American Water Company NOT PWSA (who are slightly cheaper). The rate schedule for my water can be found at the PAWC webstite... as I note, widely identified as the the highest rates in north America.
In any case I pay 1% less local tax here.... and some other nicities that make it much better than the city. I do beleive the average national water cost is well below $3.00 per 1000 gal.
My water is provided by the Pennsylvania American Water Company NOT PWSA (who are slightly cheaper). The rate schedule for my water can be found at the PAWC webstite... as I note, widely identified as the the highest rates in north America.
In any case I pay 1% less local tax here.... and some other nicities that make it much better than the city. I do beleive the average national water cost is well below $3.00 per 1000 gal.
fahz
Premium Member
I have now run this test with a off brand 75 GPD membrane and a FilmTec 75 GPD membrane. The purpose was to see if two different membranes made a difference. I ran the test with a 600 ml flow restrictor which under normal single membrane conditions gives you a 4:1 waste. I ran the FilmTec membrane in the second position because it is performance rated to 50 psi. With a Aquatec booster pump at 96 psi the system produced 7.5 GPH production water and 9.40 GPH waste water.
Jim
Jim
Roland Jacques
Premium Member
Jim,
waste to water 1.25 : 1 still sounds awesome. i shoud have mine running next week.
I've heard of 600ml and 800ml resistors. Do you use deferent resistors for deferent reasons?
How much deference is their between the different membranes? I understand filmtec is best suited for low pressures. But say the GE desel 75 membrane, and the filmtec 75 membrane, were do you see the deference in performance? Also with the .6 micron carbon filter what kind of pressure drop does that cause?
waste to water 1.25 : 1 still sounds awesome. i shoud have mine running next week.
I've heard of 600ml and 800ml resistors. Do you use deferent resistors for deferent reasons?
How much deference is their between the different membranes? I understand filmtec is best suited for low pressures. But say the GE desel 75 membrane, and the filmtec 75 membrane, were do you see the deference in performance? Also with the .6 micron carbon filter what kind of pressure drop does that cause?
fahz
Premium Member
We use 600's for the 75 GPD membrane and 850's for the 100 GPD. The FilmTec is the perfected membrane because it is rated for 50 psi The others are rated for 60 psi and above. I'm currently running a 5 micron sediment, Chloramine Master granular activated carbon, and a .5 micron Matrikx CR1 carbon block and have a 4 psi pressure in the housings.
I will be gone for a few days attending the Foster & Smith LiveAquaria frag swap. Our club is the host club and originator of the swap so it's a big deal for us. Be back Sunday night if anyone has more questions.
Jim
I will be gone for a few days attending the Foster & Smith LiveAquaria frag swap. Our club is the host club and originator of the swap so it's a big deal for us. Be back Sunday night if anyone has more questions.
Jim
Roland Jacques
Premium Member
Well I finished my RO unit. It’s out of my living room my wife’s happy & I’m sad it was so fun to put together. Now its in the garage. .
Anyway I started a new thread.
Got some minor issues. But my first test was, 1.0 to 0.75, clean to waste.
Still need three .5 micron Matrikx CR1 carbon blocks. And a better pressure gauge. My tap water pressure was higher than I thought.
Photos in the link
http://reefcentral.com/forums/showthread.php?s=&threadid=878461
Anyway I started a new thread.
Got some minor issues. But my first test was, 1.0 to 0.75, clean to waste.
Still need three .5 micron Matrikx CR1 carbon blocks. And a better pressure gauge. My tap water pressure was higher than I thought.
Photos in the link
http://reefcentral.com/forums/showthread.php?s=&threadid=878461
