Reverse Osmosis Questions

[Balazar]

Just picked up a RO system and the feed line is made to hook to a garden hose faucet. How do i put a faucet like that under a bathroom sink?

If you go to your local hardware store they should have a screw in adapter that will replace the standard faucet screen.

A better way to go may be tapping under the sink with a "T" from your cold water. depending on how your sink is setup you may need a brass threaded "T" and a bushing that goes from male pipe thread (the size of your "T") and GH (garden hose thread). If your pipes are copper and soldered together then you can sweat the pipe apart cut a section out and sweat in a copper "T" with GH spigot attached. If you can find them there are copper "T"s that don't require solder. They are called "shark fittings" and they are much easier than sweating pipes. Either way you will have to shut off water to the sink before working on it.

 

[eyes]

Id like to know how you get a 1 to 1 ratio. Ive got a booster permeate pump on a 100 gpd unit and i still havent been able to reduce it beyond 1 to 4. Before the pump was installed it was 1 to 8. What is your water pressure going into your unit before your booster pump and after? are those (2) 100 gpd?

 

[uglybunny]

Hello,
The Machines At The Store (Glacier) Are RO. Goes Thru 3 Charcoal Filters, RO, UV Scan & 1 More Filter.
PPM-008
PH-6.5
$0.25 A Gal.

Hmm thank you for the info. I am assuming since it goes through 3 charcoal filters as well as the RO process this water should be chloramine free? Is this a safe assumption?

 

[Balazar]

Id like to know how you get a 1 to 1 ratio. Ive got a booster permeate pump on a 100 gpd unit and i still havent been able to reduce it beyond 1 to 4. Before the pump was installed it was 1 to 8. What is your water pressure going into your unit before your booster pump and after? are those (2) 100 gpd?

maybe try a restrictor that lets less water through the waist line. That would create higher pressure. You also don't want to go over the amount of filtered water per day your membrane is rated for though right? or who cares you replace it when you replace it lol.

or you could try what we were talking about earlier and get another membrane and use the waist from your current membrane to feed it and combine the two clean water outs before going through the automatic shutoff valve.

 

[habeeb]

question. are these fine for micron filters in a R/O system, as I normally use the fin style ones, not sure if these are different as tey say depth filters? here

 

[Balazar]

question. are these fine for micron filters in a R/O system, as I normally use the fin style ones, not sure if these are different as tey say depth filters? here

yep they work just fine. I had a fin style one and just replaced it with one of those. It seems to work just fine.

 

[habeeb]

^ ah thank you, sounds good, there so cheap !!

another question, sorry guys. anyone know the stuff for the thread connectors is, it looks like white tape sort of stuff when I pealled it off?

I have some old equipment and I have the wrong connector size so I need to buy new ones, but I know they use some sort of caulk or tape to make the watertight for the threads?? anyone know what its called?

what website you guys recommend for filters?

 

[Balazar]

^ ah thank you, sounds good, there so cheap !!

another question, sorry guys. anyone know the stuff for the thread connectors is, it looks like white tape sort of stuff when I pealled it off?

what website you guys recommend for filters?

Its called Teflon tape or plumbers tape or thread tape. You can get it at any hardware store. Usually in the plumbing section. I used bulkreefsupply.com but ebay looks just as good if not better in many cases. No worries about the questions that's what this thread is for. I'm gonna go blaze and put on some and drink some. I love the holidaze.

 

[Bunz]

you clearly have no idea what you are talking about. Using a second membrane to filter the waste water from the first membrane brings your waste to a perfect 1/1.

read up.

I won't lower myself to your standards by throwing accusations, but according to this post from a manufacturer of r/o equipment, there isn't even a mention of running 2 membranes to get zero waste water. Perhaps you could show us your expertise in this field instead of just giving a smart ass answer...............

"The "Zero Waste" Reverse Osmosis System Process
"Zero Waste" reverse osmosis systems come in two basic types. The more advanced types of "zero waste" systems eliminate water waste by pumping the brine water into the hot water plumbing instead of down the drain. The drawback to this design is that the brine water injected into the hot water line can be discharged from your kitchen sink faucet on your hands, cooking, dishes, etc, and into your dishwasher. The less advanced types of "zero waste" systems will pump the brine water back into the cold water line that feeding the reverse osmosis unit. The downside to this design is that the additional concentrated brine water in the feed water will force the reverse osmosis system to work harder and wear down the system components faster resulting in more frequent filter changes and overall shorter system life than a comparably equipped standard reverse osmosis system. Both systems are effective at eliminating water waste but their downsides are significant. "

http://www.advancedwaterfilters.com/faq.php?q_id=26

So, if I read this correctly, running waste water back thru the system or thru an additional membrane will cause wear & tear on your system. I'll just continue to use my single DOW 75 gpd membrane on my 5 stage system that has done me well for over 6 years!!

Bunz

 

[Balazar]

Let me just clear something up here, I think it was just a misunderstanding of what we were talking about. 2fast4u2 was mentioning that with one membrane you create more waist water than clean water. If you get a second membrane and reroute the waist from your first membrane into the intake of your second then combine your clean outs and put the waist from the second membrane into your auto shutoff valve you make about a 1 to 1 ratio of clean to dirty. You can watch a video on exactly how this is done here. Theoretically you could chain together as many membranes as you have pressure to feed. I have not seen a practical RO with no waist as of yet.

 

[Bunz]

A standard r/o system usually has a 3:1 rejection rate if ran at the proper pressure. The first membrane has a rejection rate of 97%, so therefore the waste water has a higher tds then the original incoming water. If basic theory works here, the 2nd membrane will work even harder then the first. If you take the 3:1 rejection rate into account, you'd have to run 4 membranes to produce no waste water, however that 4th membrane won't last very long.

 

[Kcar]

Feeding the second RO membrane with the waste water from the first will greatly
reduce the lifespan of the second membrane. Whats cheaper, new membranes or
the waste water? What if you use the waste water to water your garden?

 

[Bunz]

What if you use the waste water to water your garden?

That's what I do with it. I've also read about people that run the waste to an additional storage tank & use that to run their washing machine.

 

[Balazar]

Or you could use it to flush your crapper lol.

 

[Giant]

Damn, my TDS meter showed up today.. Tap water is 800ppm.. My RO water is about 110ppm!

 

[2fast4u2]

I won't lower myself to your standards by throwing accusations, but according to this post from a manufacturer of r/o equipment, there isn't even a mention of running 2 membranes to get zero waste water. Perhaps you could show us your expertise in this field instead of just giving a smart ass answer...............

"The "Zero Waste" Reverse Osmosis System Process
"Zero Waste" reverse osmosis systems come in two basic types. The more advanced types of "zero waste" systems eliminate water waste by pumping the brine water into the hot water plumbing instead of down the drain. The drawback to this design is that the brine water injected into the hot water line can be discharged from your kitchen sink faucet on your hands, cooking, dishes, etc, and into your dishwasher. The less advanced types of "zero waste" systems will pump the brine water back into the cold water line that feeding the reverse osmosis unit. The downside to this design is that the additional concentrated brine water in the feed water will force the reverse osmosis system to work harder and wear down the system components faster resulting in more frequent filter changes and overall shorter system life than a comparably equipped standard reverse osmosis system. Both systems are effective at eliminating water waste but their downsides are significant. "

http://www.advancedwaterfilters.com/faq.php?q_id=26

So, if I read this correctly, running waste water back thru the system or thru an additional membrane will cause wear & tear on your system. I'll just continue to use my single DOW 75 gpd membrane on my 5 stage system that has done me well for over 6 years!!

Bunz

your rebuttle is a "hot mess".

and where do i say anything about using another membrane to achieve lower tds?

i meant read up as in learn to read.

 

[Bunz]

You make accusations such as I have no idea what I'm talking about, even though I quote info from a r/o manufacturer, but instead of backing up the info you speak, you say "read up"....only thing that's a mess is that you actually believe that you can get a 1:1 ratio running a second membrane. Wanna prove me wrong? Show me some info to back it up, like I did.....

 

[2fast4u2]

you are the king of right.

your RO setup is the best.

you win.

happy?

 

[2fast4u2]

Damn, my TDS meter showed up today.. Tap water is 800ppm.. My RO water is about 110ppm!

dang, my tap is 85! i could prob get away w/o even noticing in just straight tap.

 

[Giant]

Okay, after testing again (more thoroughly) my tap water is about 740ppm, and my RO water is 34ppm. good deal!