This is an advertisement
Interested In Advertising? | Contact Us Here

Warning!

 

Welcome to Clean It Up; the UK`s largest cleaning forum with over 34,000 members

 

Please login or register to post and reply to topics.      

 

Forgot your password? Click here

slendersunfish

  • Posts: 94
4040 Backwashing with salt
« on: September 18, 2012, 05:10:23 pm »
Ive been told that i should backwash my second hand 4040 ro with salt to add longevity to the membrane.Is this simply a case of putting salt in a small vessel, adding pressurized water back into the "wrong" side of the 4040 ro ?
Does anyone know

Smart Carpet

Re: 4040 Backwashing with salt
« Reply #1 on: September 18, 2012, 05:20:00 pm »
No, you do not backwash your RO with salt, or with any water for that matter!

If you use Softener Resin then you must re-generate this with normal dishwasher salt before each fill.


With your RO, you should run the water with the waste open fully for 5 minutes before and after each fill*

*unless you have an automatic flush setup which will open the waste gate fully for you for a minute or two every hour that the RO is in use.

Lee GLS

  • Posts: 3844
Re: 4040 Backwashing with salt
« Reply #2 on: September 18, 2012, 06:21:18 pm »
SALT WILL KILL YOU RO!!!!!

Spruce

  • Posts: 8465
Re: 4040 Backwashing with salt
« Reply #3 on: September 18, 2012, 07:46:13 pm »
A water softner removes the magnesium and calcium ions in the water and replaces them with sodium ions which is kinder to r/o membranes.

So salt water shouldn't damage your r/o membranes. Many desert countries rely on the desalination of seawater via reverse osmosis to provide drinking water.

The water mustn't contain chlorine, as the chlorine is what destroys membranes.

Flush as J WFP has advised using your flush valve and using water that has been passed through your sediment and chlorine block filter.
Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)