Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: tom20001 on December 03, 2013, 09:30:23 pm
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for 250 litre tank guys?
what would be max ppm to make di only viable
thanks in advance
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The size of your tank doesn't matter.
Less than 100 ppm really.
Technically you can use 500 ppm with DI only, but it will cost you a fortune in resin.
If your ppm is higher than 100 then it will be much cheaper in the long run getting a ro.
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My PPM is about 60, and is fine DI only...
I'd also say around 100 is the limit until you should really consider going the RO route.
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My PPM is about 60, and is fine DI only...
I'd also say around 100 is the limit until you should really consider going the RO route.
With 60 ppm what vessel/vessels are you using and how long does a sack of resin last??
After ro my water is around 37/42 and a standared medium vessel 6 litres i think only does around 3000 litres roughly from my head.
Cheers
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My PPM is about 60, and is fine DI only...
I'd also say around 100 is the limit until you should really consider going the RO route.
With 60 ppm what vessel/vessels are you using and how long does a sack of resin last??
After ro my water is around 37/42 and a standared medium vessel 6 litres i think only does around 3000 litres roughly from my head.
Cheers
I use a 11 litre vessel, which lasts about 2.5 months roughly. We are only using WFP for upstairs and leaded windows mind
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my tap tds is 29-35 usually.great for DI only.
id go up to 200 tap tds with 2 massive 25L vessels(double DI) if i had to rather than buy an RO system as no room for one plus with di only its easy and fast to purify your water.
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my tap tds is 29-35 usually.great for DI only.
id go up to 200 tap tds with 2 massive 25L vessels(double DI) if i had to rather than buy an RO system as no room for one plus with di only its easy and fast to purify your water.
That's great water quality, whereabouts in the country are you?
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ppm is between 83 and 89 lads .......
will a di ONLY be cost efficient in this case?
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A R O should bring it down to 8/9 whick would be fine to clean. But a di only will be perfect .
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Twin DI will be even better for you.
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A R O should bring it down to 8/9 whick would be fine to clean. But a di only will be perfect .
a di only will be ok then i take it
which di vessel should i go for, what is the advantage of bigger capacity di .
ie- a 6" x 18" 6.5 litre versus a 8" x 35" 25 litre resin vessel?
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Twin DI will be even better for you.
why is that pure?
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A R O should bring it down to 8/9 whick would be fine to clean. But a di only will be perfect .
a di only will be ok then i take it
which di vessel should i go for, what is the advantage of bigger capacity di .
ie- a 6" x 18" 6.5 litre versus a 8" x 35" 25 litre resin vessel?
Definitely go DI, especially considering your parking situation you mentioned in another post.
So filling up your tank will be quicker than if using an RO.
I would say go double DI and use two 11 ltr DI vessels.
Anything bigger than that will take up too much room in your van.
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ok andy thanks for that
but what is the advantage of double di?
cheers
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The resin will last longer by alternating the sequence of the vessels.
That's the theory.
I've never actually done it as im an RO user but im sure someone on here will advise you if you need further advice.
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thanks andy
as regards capacity of each di, 11 litre, 15 lite, 25 litre i take it the only difference with these is you have to fill them with resin less ofter with bigger ones and more with smaller ones, is that only difference as regards output of each?
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My water is around 130 - 150 ppm. I use about 700l a week and change the resin once a month.
So thats 11l of resin a month, so £69.00 every 3 months for resin. And I usually fill up at jobs so no big water bill.
I have it set up with tap water going into a 350l tank (20 mins filling time) and going trough the di as its being pumped out.
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forgot to say i have twin di
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My water is around 130 - 150 ppm. I use about 700l a week and change the resin once a month.
So thats 11l of resin a month, so £69.00 every 3 months for resin. And I usually fill up at jobs so no big water bill.
I have it set up with tap water going into a 350l tank (20 mins filling time) and going trough the di as its being pumped out.
fair play james thanks for that
i had intended to put water through di from mains and then into tank and then just pump to pole, this is ok i take it? im a novice u prob guessed :(
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That's fine. But you will need to run the water trough the di quite slow, especially when the resin starts getting to the end if it's life.
I put Tao water in the tank to save time each evening filling.
Tank > pump > di > reel
Just saves me so much time
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ppm is between 83 and 89 lads .......
will a di ONLY be cost efficient in this case?
yes should last a while. Double di would be even better.
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My tap TDS is 90ppm. I've been using twin DI for 10 years ( I reckon I was the first to twin up ).
This is deffo the way for you to go. I'd recommend two 11ltr vessels on the van to purify "on demand" & fill your tank with tap water. ;)
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My tap TDS is 90ppm. I've been using twin DI for 10 years ( I reckon I was the first to twin up ).
This is deffo the way for you to go. I'd recommend two 11ltr vessels on the van to purify "on demand" & fill your tank with tap water. ;)
will twin di be more efficient than single 25 litre?
thanks
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My tap TDS is 90ppm. I've been using twin DI for 10 years ( I reckon I was the first to twin up ).
This is deffo the way for you to go. I'd recommend two 11ltr vessels on the van to purify "on demand" & fill your tank with tap water. ;)
will twin di be more efficient than single 25 litre?
thanks
Yes.
To give a basic explanation- with one vessel once the resin starts to go off you would have to throw it in the bin & fill with fresh resin.
When you have two vessels you would now use this older resin ( say for example, reading 015ppm ) to "pre-filter" a fresh vessel. So, the fresh vessel is now being fed water at 015ppm instead of 90ppm. Yes, the ppm does continue to rise in the older vessel but until it reaches your source input water ppm it's still working for you.
Hope that helps.
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My tap TDS is 90ppm. I've been using twin DI for 10 years ( I reckon I was the first to twin up ).
This is deffo the way for you to go. I'd recommend two 11ltr vessels on the van to purify "on demand" & fill your tank with tap water. ;)
will twin di be more efficient than single 25 litre?
thanks
Yes.
To give a basic explanation- with one vessel once the resin starts to go off you would have to throw it in the bin & fill with fresh resin.
When you have two vessels you would now use this older resin ( say for example, reading 015ppm ) to "pre-filter" a fresh vessel. So, the fresh vessel is now being fed water at 015ppm instead of 90ppm. Yes, the ppm does continue to rise in the older vessel but until it reaches your source input water ppm it's still working for you.
Hope that helps.
great explanation mate , now i understand :)
thanks for that
il order 2 11litres so....
just one other question do you filter the water before it enters van mounted tank and then pump it to poles, its just some1 earlier done it differently to this
thanks
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My tap TDS is 90ppm. I've been using twin DI for 10 years ( I reckon I was the first to twin up ).
This is deffo the way for you to go. I'd recommend two 11ltr vessels on the van to purify "on demand" & fill your tank with tap water. ;)
will twin di be more efficient than single 25 litre?
thanks
Yes.
To give a basic explanation- with one vessel once the resin starts to go off you would have to throw it in the bin & fill with fresh resin.
When you have two vessels you would now use this older resin ( say for example, reading 015ppm ) to "pre-filter" a fresh vessel. So, the fresh vessel is now being fed water at 015ppm instead of 90ppm. Yes, the ppm does continue to rise in the older vessel but until it reaches your source input water ppm it's still working for you.
Hope that helps.
great explanation mate , now i understand :)
thanks for that
il order 2 11litres so....
just one other question do you filter the water before it enters van mounted tank and then pump it to poles, its just some1 earlier done it differently to this
thanks
You "can" do either HOWEVER..........
Flow rate Vs resin volume is a major factor in resin economy & to cut a long story short- it's much more efficient to fill the van tank with tap water & pump through the vessels to pole- this is known as "purifying on-demand". This way also has other benefits like faster filling, filling from any source (customer taps etc) & if you want to dump water/drain tank you're not wasting pure water.
Filling the tank with pure, through the vessels at mains pressure/ flow rate is not as efficient as the above.
Fit one of these, coupled to a male hozelock inlet & you can just plug the hose in & forget about it. Cuts water off when tank gets full.
http://www.toolstation.com/shop/p42876?utm_source=feed&utm_medium=googleshopping&utm_campaign=googleshopping&mkwid=dr4AJOEl&pcrid=25046331863&gclid=CIadxpG6l7sCFUZY3godnWsApA
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You "can" do either HOWEVER..........
Flow rate Vs resin volume is a major factor in resin economy & to cut a long story short- it's much more efficient to fill the van tank with tap water & pump through the vessels to pole- this is known as "purifying on-demand". This way also has other benefits like faster filling, filling from any source (customer taps etc) & if you want to dump water/drain tank you're not wasting pure water.
Filling the tank with pure, through the vessels at mains pressure/ flow rate is not as efficient as the above.
Fit one of these, coupled to a male hozelock inlet & you can just plug the hose in & forget about it. Cuts water off when tank gets full.
http://www.toolstation.com/shop/p42876?utm_source=feed&utm_medium=googleshopping&utm_campaign=googleshopping&mkwid=dr4AJOEl&pcrid=25046331863&gclid=CIadxpG6l7sCFUZY3godnWsApA
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ok id like to do it your way because of the benefits u have outlined :)
so i take outlet from tank to di and then to pump is it?
so it goes water in tank- di vessel - pump+controller- windows???
thanks again
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You "can" do either HOWEVER..........
Flow rate Vs resin volume is a major factor in resin economy & to cut a long story short- it's much more efficient to fill the van tank with tap water & pump through the vessels to pole- this is known as "purifying on-demand". This way also has other benefits like faster filling, filling from any source (customer taps etc) & if you want to dump water/drain tank you're not wasting pure water.
Filling the tank with pure, through the vessels at mains pressure/ flow rate is not as efficient as the above.
Fit one of these, coupled to a male hozelock inlet & you can just plug the hose in & forget about it. Cuts water off when tank gets full.
http://www.toolstation.com/shop/p42876?utm_source=feed&utm_medium=googleshopping&utm_campaign=googleshopping&mkwid=dr4AJOEl&pcrid=25046331863&gclid=CIadxpG6l7sCFUZY3godnWsApA
ok id like to do it your way because of the benefits u have outlined :)
so i take outlet from tank to di and then to pump is it?
so it goes water in tank- di vessel - pump+controller- windows???
thanks again
[/quote]
Not quite, you want the sequence - TANK>PUMP>VESSELS>HOSE REEL>POLE. Less problems with air ingress when you push, rather than pull water through the vessels. ;)
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Not quite, you want the sequence - TANK>PUMP>VESSELS>HOSE REEL>POLE. Less problems with air ingress when you push, rather than pull water through the vessels. ;)
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oh ok no prob
i just thought the pumping would put the water through the di vessels to quick to give resin time to purify water?
cheers mate
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Not quite, you want the sequence - TANK>PUMP>VESSELS>HOSE REEL>POLE. Less problems with air ingress when you push, rather than pull water through the vessels. ;)
oh ok no prob
i just thought the pumping would put the water through the di vessels to quick to give resin time to purify water?
cheers mate
[/quote]
The flow rate through the vessels is the same regardless of whether you pull or push water through them. The pump on the van, even at max speed is still no where near what mains flow would be, but you are on the right track of thought with flow rate/resin economy theory. ;)
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The flow rate through the vessels is the same regardless of whether you pull or push water through them. The pump on the van, even at max speed is still no where near what mains flow would be, but you are on the right track of thought with flow rate/resin economy theory. ;)
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thats great, thanks for all the help mate
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The flow rate through the vessels is the same regardless of whether you pull or push water through them. The pump on the van, even at max speed is still no where near what mains flow would be, but you are on the right track of thought with flow rate/resin economy theory. ;)
thats great, thanks for all the help mate
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No problem ;)