[macmac]

macmac
how much water do you use a week.

I know you have to give the resin time to do its work, i have spokn to Alan Matthews quite a bit about this subject.
Resin should be able to handle 10 litres a minute going through 50 litres of the stuff.

There are guys here using 2 litres a minute on there vans going through 1 litre vessils , so 10 going through 50 plus should be more than enough.

It's also down to the input tds, so the guys using 1ltr bottles what is the input tds that is feeding the 1ltr bottle?
The input tds feeding your main bottles is 80ppm see?
The lower the input tds the higher the flow the resin can handle & as the resin gets more & more used up the resin gets less economical if the flow rate doesn't lower too.
As for shaking- let some water out of the vessel to make room inside, cap the ends off with a loop of hose & shake the whole thing up/down side to side etc for a minute to mix up the resin inside & get rid of the flow created channels. let it settle for 15/20 mins, run a few litres through & bob's ur uncle.

The princepal is the same no matter how much water you use a week. It's about making resin more economical & not competing with an RO.

That's it for noo

Tony

[DASERVICES]

Mike this is in reply to your question :-

Ion exchange is a continuous process, and the exchange takes place due to ionic concentration difference. When the flow is stopped (i.e.during shutdown), the ionic concentration in water and that on resin reaches equilibrium. Now when you start the cycle, this water having higher ionic concentration comes out first.   This will be approx 30-35 litres in a system using 25 litre resin. Thereafter you will get good water. This in layman’s term just means that you should remove /drain the stagnant water in the resin bed.

Hope you understand that.

Doug

[Moderator David@stives]

Doug

The data you show is from a regenerated resin, not virgin resin

[Mike 108]

Doug - Thanks for looking into that for me.

Mike

[macmac]

Doug

The data you show is from a regenerated resin, not virgin resin

The data i show is for regenerated resin, the data doug shows is for virgin resin which is regenerable (as far as i can see). the resins we use can be regenerated more than once.

Tony

[*foxman]

There seems to be a lot of confusioin with term 'regenerated'. People like Macmac think regenerated resin is 'second hand, reused or refurbished' resin. In some cases this may be true - but you would know about it and you wouldn't be buying it directly from a resin manufacturer.

Manufactured resin such as Dowex, Purolite, etc is also regenerated because it is mixed bed resin. Mixed bed meaning there are a number of different types of resin in there. The regeneration is part of the process of making the resin.

"All it means is that the resin has been converted into its functional for.  This is accomplished by regenerating the cation resin into the hydrogen form and the anion resin into the hydroxide form.  As the resin in manufactured, it would not function properly as a mixed bed.  "Highly" regenerated means that it is near 99% regenerated into the appropriate form so that it gives you higher purity water and better leakage for longer."

This is a direct quote from the lab of a resin manufacturer.

[Moderator David@stives]

Foxman

Is there a way to make resin go "substancialy"  further.

Or is it just just clutching at straws ?

Dave

[*foxman]

Having the 2 x DI tanks is probably the simplest way, apart from 'regenerating ' yourself i dont think there is much else you can do.

The debate for the best resin will still rage on though. Dave, as you use a lot of resin, it would be interesting to see what your findings on different makes are?

[macmac]

There seems to be a lot of confusioin with term 'regenerated'. People like Macmac think regenerated resin is 'second hand, reused or refurbished' resin. In some cases this may be true - but you would know about it and you wouldn't be buying it directly from a resin manufacturer.

Manufactured resin such as Dowex, Purolite, etc is also regenerated because it is mixed bed resin. Mixed bed meaning there are a number of different types of resin in there. The regeneration is part of the process of making the resin.

"All it means is that the resin has been converted into its functional for.  This is accomplished by regenerating the cation resin into the hydrogen form and the anion resin into the hydroxide form.  As the resin in manufactured, it would not function properly as a mixed bed.  "Highly" regenerated means that it is near 99% regenerated into the appropriate form so that it gives you higher purity water and better leakage for longer."

This is a direct quote from the lab of a resin manufacturer.

How do we explain the big difference in performance then foxman ( not wanting an argument either). I have proven it with my own tests that there is a massive difference between purolite & dowex. I'm talking about purolite purchased from cleantech, in a purolite branded bag between 2 & 4 years ago (mb400). The dowex just out-lasts it no doubt at all & also keeps a low tds for much, much longer which is perfect for twin di systems?
I regard the resin as being regenerated as the info i read on internet leads me to beleive that.

Tony

[macmac]

Just checked the tds of my oldest di vessel which i changed over on -11/02/08 ( so a month ago) When i changed it it was reading 001ppm, today it still only reads 003ppm & that's without shaking it. A rise of 002ppm in a month, try that with purolite
That's a quality resin for you (dowex) no matter what the white collars say.

Tony

[*foxman]

Luke Johnson! Where are you? - can you report on your resin use!!? 

[alanwilson]

was thinking about this topic earlier (I reckon this forum is sending me slightly mad) and had a look at our ro and resin charts.

Since 06/09/07 we have used 169,000 litres of pure water.  Both resin vessels were filled with fresh (DOWEX) resin on that date. 

TDS in from RO is 007ppm (on average) and resin vessel 1 is only reading 002ppm and vessel 2 is 000ppm.

Tested with 2 handheld tds meters both calibrated last Monday evening.

Both vessels are about 19ltr but it took just over 100,000 litres to make vessel 1 rise from 000ppm to 001ppm then another 60,000 litres or so to go from 001ppm to 002ppm.

I'm quite happy with this as before with Purolite it only lasted for around 100,000litres before rising to 005ppm.

So really no contest as far as I can see.

And no Tony ain't paying me to say this isn't that right big boy!

[macmac]

was thinking about this topic earlier (I reckon this forum is sending me slightly mad) and had a look at our ro and resin charts.

Since 06/09/07 we have used 169,000 litres of pure water.  Both resin vessels were filled with fresh (DOWEX) resin on that date. 

TDS in from RO is 007ppm (on average) and resin vessel 1 is only reading 002ppm and vessel 2 is 000ppm.

Tested with 2 handheld tds meters both calibrated last Monday evening.

Both vessels are about 19ltr but it took just over 100,000 litres to make vessel 1 rise from 000ppm to 001ppm then another 60,000 litres or so to go from 001ppm to 002ppm.

I'm quite happy with this as before with Purolite it only lasted for around 100,000litres before rising to 005ppm.

So really no contest as far as I can see.

And no Tony ain't paying me to say this isn't that right big boy!

 

It's about being in the know, to be honest i'm not too fussed with data/spec etc, sometimes it's like i'm trying to find a reason for the difference but hey, who cares, it's real, it works & it saves me & many others lots of money on resin & it's that what counts!

Tony