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keyser soze

  • Posts: 1694
2nd ro . is it worth it
« on: March 03, 2012, 11:03:21 am »
m in a hard water area . and i wondered by having 2 ro unit is it worth putting waste from the first ro through the 2nd

to cut down on the waste water . i guess you would need a booster pump as well. just curious really if you could make

 the system more efficent .  any comments guys   
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roundbuilder

Re: 2nd ro . is it worth it
« Reply #1 on: March 03, 2012, 11:45:58 am »
I have thought about this too as spend so much on resin. I hear of guys up north who only use an ro and water is between 2 an 10 ppm which doesnt need di resin.
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Lee GLS

  • Posts: 3844
Re: 2nd ro . is it worth it
« Reply #2 on: March 03, 2012, 12:49:36 pm »
What is your tds? I live in a hard water area tds is 400 ish, I have a 4040 with a booster pump and it comes out 8. I changed my 11L resin 8 months ago and it's only still only coming out 002 now.
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keyser soze

  • Posts: 1694
Re: 2nd ro . is it worth it
« Reply #3 on: March 03, 2012, 03:17:34 pm »
Quote from: Lee GLS on March 03, 2012, 12:49:36 pm
What is your tds? I live in a hard water area tds is 400 ish, I have a 4040 with a booster pump and it comes out 8. I changed my 11L resin 8 months ago and it's only still only coming out 002 now.
tds at source is 334 then after ro and pre filters its about 14 and then down to zero after di
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keyser soze

  • Posts: 1694
Re: 2nd ro . is it worth it
« Reply #4 on: March 03, 2012, 03:19:20 pm »
Quote from: Lee GLS on March 03, 2012, 12:49:36 pm
What is your tds? I live in a hard water area tds is 400 ish, I have a 4040 with a booster pump and it comes out 8. I changed my 11L resin 8 months ago and it's only still only coming out 002 now.


do you use a softener lee
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Lee GLS

  • Posts: 3844
Re: 2nd ro . is it worth it
« Reply #5 on: March 03, 2012, 03:41:51 pm »
No, I used to, but it needed flushing with salt too offer, so I took it off.
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roundbuilder

Re: 2nd ro . is it worth it
« Reply #6 on: March 03, 2012, 05:55:46 pm »
Guess i need a 4040 ro then. Im using merlin comes out at 35 and a sack of resin only lasts 2 months.
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colin purewater

  • Posts: 2282
Re: 2nd ro . is it worth it
« Reply #7 on: March 03, 2012, 06:14:07 pm »
Quote from: mick kent on March 03, 2012, 05:55:46 pm
Guess i need a 4040 ro then. Im using merlin comes out at 35 and a sack of resin only lasts 2 months.

Have you got a booster pump?  I have a merlin and getting the same figure as you
But a booster pump will make a big difference
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keep it simple

DaveG

  • Posts: 6348
Re: 2nd ro . is it worth it
« Reply #8 on: March 03, 2012, 06:21:28 pm »
Weve got a booster pump (75 psi) and the best it gets water down to is 40 ppm.  ??? ??? ???
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You can't polish a turd

roundbuilder

Re: 2nd ro . is it worth it
« Reply #9 on: March 03, 2012, 07:12:23 pm »
Quote from: colin purewater on March 03, 2012, 06:14:07 pm
Quote from: mick kent on March 03, 2012, 05:55:46 pm
Guess i need a 4040 ro then. Im using merlin comes out at 35 and a sack of resin only lasts 2 months.



Have you got a booster pump?  I have a merlin and getting the same figure as you
But a booster pump will make a big difference


No coz pressure is 60 psi here from mains
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Window Washers

  • Posts: 9036
Re: 2nd ro . is it worth it
« Reply #10 on: March 04, 2012, 01:31:37 am »
Quote from: mick kent on March 03, 2012, 05:55:46 pm
Guess i need a 4040 ro then. Im using merlin comes out at 35 and a sack of resin only lasts 2 months.
are you using twin di vessals Mick ? if not I would try that will cut down on your resin wastage  ;)
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If your not willing to learn, No one can help you, If you are determined to learn, No one can stop you ;)
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