Life of a RO membrane

MINIATUS · 03-11-2006, 07:06 PM

What is the average life of a membrane and what circumstance lengthen or shorten its life.

MINIATUS

Gina · 03-11-2006, 07:22 PM

There are several factors that can shorten/lengthen lifespan.
Flushing the membrane helps to lengthen the amount of use.

I know that different chemicals running through them can shorten their use.
We know when ours is turning bad when we check the TDS reading going into the membrane then again coming out.
You really want to see a 90% rejection on the water coming out.

As far as giving you an estimate on the amount of gallons, I really don't know the answer for that.

Woodstock · 03-11-2006, 09:21 PM

Depending on the membrane, clorine/chloramines could damage it. Also, excessive heat will too.

The life of the membrane depends on your incoming water quality and the type of prefilters you have installed.

MINIATUS · 03-11-2006, 09:32 PM

In comming water is 203 ppm and its an aquasafe unit. I back flush the ro for about 20 minutes every week. pre filters are changes monthly.

MINIATUS

Woodstock · 03-11-2006, 10:17 PM

http://experts.kokomotribune.com/view.asp?e=12

Quote:

The RO membrane is designed to reduce mineral content by up to 98%. Membrane longevity depends on what type of water is being fed to the RO, preferrably soft water. Four to five years is not unusual life for the membrane. Membrane performance can be checked by using a TDS meter to test for rejection performance.

MINIATUS · 03-11-2006, 10:27 PM

Thanks Woodstock. Im still good for a few more years.

MINIATUS

Woodstock · 03-11-2006, 10:40 PM

http://rockypointh2o.com/faqs.html

Quote:

The longevity of a reverse osmosis membrane greatly depends on feed water conditions, how well the system is maintained and whether the supply is municipal or well water. On most municipal water supplies, the average useful life of a Reverse Osmosis membrane is 2 to 4 years. In well water applications, reverse osmosis life may be reduced due to varied water conditions.

UnresistibleBlu · 05-14-2006, 10:38 AM

The most common cause of membrane failure I run across is folks leaving the carbon prefilter in beyond its useful life, and thereby exposing the membrane to chlorine.

03-11-2006, 07:06 PM	#1 (permalink)
MINIATUS Torch coral Join Date: Nov 2003 Location: St.Thomas,Ontario Posts: 506 View Gallery Karma Komment	Life of a RO membrane What is the average life of a membrane and what circumstance lengthen or shorten its life. MINIATUS __________________ Buzzsaw please look after Rocket for Me, Miss you both ------------------------------------------------ Tankless for the time Being.

03-11-2006, 07:22 PM	#2 (permalink)
Gina Moderator Join Date: Dec 2003 Location: Indiana Posts: 8,836 View Gallery Karma Komment	Re: Life of a RO membrane There are several factors that can shorten/lengthen lifespan. Flushing the membrane helps to lengthen the amount of use. I know that different chemicals running through them can shorten their use. We know when ours is turning bad when we check the TDS reading going into the membrane then again coming out. You really want to see a 90% rejection on the water coming out. As far as giving you an estimate on the amount of gallons, I really don't know the answer for that. __________________ Gina and Mark's 75 Visit Our Sponsors Gina's Cube Gina

03-11-2006, 09:21 PM	#3 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 24,155 View Gallery Karma Komment Add yours!	Re: Life of a RO membrane Depending on the membrane, clorine/chloramines could damage it. Also, excessive heat will too. The life of the membrane depends on your incoming water quality and the type of prefilters you have installed. __________________ ~Doni Marie~ *GOT ICH???* *My Victorious Battle with ICH* 120 Reef Chronicle ~ *Breeding Picasso Clownfish~* *Massive 300 gal growout~* *My Anemone & Picasso Tank ~* *Picasso & Snowcasso for sale~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________

03-11-2006, 09:32 PM	#4 (permalink)
MINIATUS Torch coral Join Date: Nov 2003 Location: St.Thomas,Ontario Posts: 506 View Gallery Karma Komment	Re: Life of a RO membrane In comming water is 203 ppm and its an aquasafe unit. I back flush the ro for about 20 minutes every week. pre filters are changes monthly. MINIATUS __________________ Buzzsaw please look after Rocket for Me, Miss you both ------------------------------------------------ Tankless for the time Being.

03-11-2006, 10:27 PM	#6 (permalink)
MINIATUS Torch coral Join Date: Nov 2003 Location: St.Thomas,Ontario Posts: 506 View Gallery Karma Komment	Re: Life of a RO membrane Thanks Woodstock. Im still good for a few more years. MINIATUS __________________ Buzzsaw please look after Rocket for Me, Miss you both ------------------------------------------------ Tankless for the time Being.

05-14-2006, 10:38 AM	#8 (permalink)
UnresistibleBlu Tubeworm Join Date: Jan 2004 Location: Ohio Posts: 27 View Gallery Karma Komment	Re: Life of a RO membrane The most common cause of membrane failure I run across is folks leaving the carbon prefilter in beyond its useful life, and thereby exposing the membrane to chlorine. __________________ www.BuckeyeFieldSupply.com 200g tank w/ SD dsb, ~150 lbs LR, 2 Maxijet 1200, 2 x 400w MH, 2 x 165w act blue; 55g refug. w/ dsb, grape and razor, NO 40w on 12 hrs, Minijet 404; 44g rubbermaid sump.

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