DI VESSEL ADVISE

[mike007]

Hi guys and ladies,

a bit of worldly advice please.

Just got a gardiner backpack and phoenix 18 pole for occasional wfp work if required due to accessibility or safety issues (normally traditional with ladders).

My tds is 179

2 questions, can I get by with just a di vessel?,and if so what is the smallest vessel I could use litre wise?.

Am thinking  probable usage no more than 150litres a week with it .

 

[Matt123]

If you can get a decent sized water butt and run it off your down pipe. The rainwater I collect is around tds 15. For the small amount you need per month rain water should be more than enough.  If you only run 150 lt of rain water s week through you di vessel the resin will last for years.

 

[mike007]

Will certainly do a test on rainwater tds when it rains next....won,t have to wait long!!!!!!

 

[spruce]

I'm presuming you will take a couple of 25 liter plastic containers full of water with you in the back of your car/van and do the filling at home.

If so and you use resin only then you could well be better off getting 2 medium sized di vessels and swapping them around to stretch your resin further. (I'm sure you will find plenty of info on the forum if you do a search for double di.)

Something like this

http://gardinerpolesystems.co.uk/all-products/pure-water-systems/water-treatment/de-ionisation/7-litre-resin-bead-pressure-vessel-canister-1808.html

Personally, I think you need to think longer term. Within a couple of hours you are going to decide that its far quicker and easier doing all the top windows with di water. That will set the proverbial cat among the pigeons (in a good way I believe.)

We started off thinking that we would just do tops wfp and continue doing bottoms trad. Within 10 minutes I was doing bottoms wfp as well. I'm short so needed a step ladder to reach the tops of the downstairs windows so doing them wfp made sense to me as it saved me so much time. 

 

[mike007]

Ive got some 25ltr containers (from local hand car wash guys) to store the water in van. And my thoughts start out is just to use the wfp on difficult to reach windows.

But quandary is at moment my customers are all new or newish to me and so I am doing lots of first cleans and can do better job traditionally, and they often comment they like that type over the wfp.

And logistically will probably if need to use wfp on particular window of a property then will use on all top windows of that property and leave ladder on van.

Start out though do not want to overspend on a di vessel that is larger than I need because that will require more resin.

 

[Matt123]

I'm presuming you will take a couple of 25 liter plastic containers full of water with you in the back of your car/van and do the filling at home.

If so and you use resin only then you could well be better off getting 2 medium sized di vessels and swapping them around to stretch your resin further. (I'm sure you will find plenty of info on the forum if you do a search for double di.)

Something like this

http://gardinerpolesystems.co.uk/all-products/pure-water-systems/water-treatment/de-ionisation/7-litre-resin-bead-pressure-vessel-canister-1808.html

Personally, I think you need to think longer term. Within a couple of hours you are going to decide that its far quicker and easier doing all the top windows with di water. That will set the proverbial cat among the pigeons (in a good way I believe.)

We started off thinking that we would just do tops wfp and continue doing bottoms trad. Within 10 minutes I was doing bottoms wfp as well. I'm short so needed a step ladder to reach the tops of the downstairs windows so doing them wfp made sense to me as it saved me so much time. 

I disagree with the need for 2 di vessels. If he is using rain water then one medium sized di will strip the water to 0 anyway why run in through another vessel? Thinking long term amd needing more and having to use his tap surly a ro system would be better?

 

[spruce]

Ive got some 25ltr containers (from local hand car wash guys) to store the water in van. And my thoughts start out is just to use the wfp on difficult to reach windows.

But quandary is at moment my customers are all new or newish to me and so I am doing lots of first cleans and can do better job traditionally, and they often comment they like that type over the wfp.

And logistically will probably if need to use wfp on particular window of a property then will use on all top windows of that property and leave ladder on van.

Start out though do not want to overspend on a di vessel that is larger than I need because that will require more resin.

I totally understand your reasoning. We purchased a trad round 12 years ago and immediately converted it to wfp. Wfp was new to us as well as our new customers. Yorkshire folk can also be very distrusting, especially with a couple of foreigners (South Africans) introducing a new system. (I married a Yorkshire lass 43 years ago out in Africa so know how they think.) Its was only when they saw the results that they started to accept us. That took a bit of time.

But for your own sake please don't let them believe that you will always be doing their traditionally.

 

[mike007]

My tap tds reading is 179. if in start up period with little weekly use could I get by with 1 di vessel and would it get the reading down to 0tds???

 

[spruce]

I disagree with the need for 2 di vessels. If he is using rain water then one medium sized di will strip the water to 0 anyway why run in through another vessel? Thinking long term amd needing more and having to use his tap surly a ro system would be better?

You are right. My response was with regard to processing water from his tap. Your post got into the system whilst I spent ages writing my reply. I'm a single finger typist. :1f609:

As and when he does need more water then r/o is the only way forward as you say.

My tap tds reading is 179. if in start up period with little weekly use could I get by with 1 di vessel and would it get the reading down to 0tds???

Yes it would.

Where the double di comes in is when your tds starts to rise as the resin gets spent.

I can't clean windows with water above 4ppm as I can see spots at 5 in low level sun. Customers I doubt would notice them but I can't take the chance.

So if using a single di I would have to replace my resin at 4ppm. But if I used a double di, I could still use that resin to purify water above 4 all the way up to 179 as the second vessel will remove what the first doesn't. Once the water rises to 4 after the second di then you know that the resin in the first vessel is completely spent. So you change the resin in that and put it after what was the second di. So you are still getting use from the old resin.

Here's a resin calculator that will give you an idea of how long the resin should last you

http://www.gardinerpolesystems.co.uk/Resin_Calculator.htm

.

 

[mike007]

Excellent thanks Spruce, seems bigger the Di vessel the longer it lasts on my calculations.

 

[spruce]

Excellent thanks Spruce, seems bigger the Di vessel the longer it lasts on my calculations.

Yes, because it holds more resin. But if you go too big then they become difficult to handle when you are trying to remove the old resin.

 

[mike007]

Bought a 11ltr di vessel, put in 10ltr resin connected up. TDS was 196 started it run slowly because hope that resin lasts longer and all the water is for my practice.Took 30mins to fill my container (think 25ltr) and 20mins to fill my gardiner backpack. TDS zero....Magic.

Did a practice and using di water amazing difference than practice with normal water for technique.

Now couple of practice days at home testing results then another piece of kit for the business.

 

[Part Timer]

Bought a 11ltr di vessel, put in 10ltr resin connected up. TDS was 196 started it run slowly because hope that resin lasts longer and all the water is for my practice.Took 30mins to fill my container (think 25ltr) and 20mins to fill my gardiner backpack. TDS zero....Magic.

Did a practice and using di water amazing difference than practice with normal water for technique.

Now couple of practice days at home testing results then another piece of kit for the business.

With a tap TDS of 196 you'll go through resin very quickly, this is for sale on the site and might be a good starting point for you money and space permitting.

 

[mike007]

With a tap TDS of 196 you'll go through resin very quickly, this is for sale on the site and might be a good starting point for you money and space permitting.



Thanks for the heads up Part Timer, It is a costing, and  practice exercise at the moment. I am going to monitor  how many litres I can get out of this Di batch (£35 worth) then decide depending on how much I use the backpack and how good the results are, whether to add the RO cost.

 

[Part Timer]

This link should give you an idea. 

http://www.windowcleaningwarehouse.co.uk/resin-calculator.html

 

[mike007]

This link should give him an idea. 

http://www.windowcleaningwarehouse.co.uk/resin

Get an error message, but I think I know the page, But want to test myself and get my readings etc. And every car or van I have ever owned did different MPG to what officially stated!!!!.

Also testing as of now for viability so not interested in speed of flow etc. I filled 25ltr in 30mins. But that,s ok when I am doing it for practice. If I go with it then my flow rate would increase and presumably faster the water goes through the resin, the less long it will last?.

 

[Part Timer]

Get an error message, but I think I know the page, But want to test myself and get my readings etc. And every car or van I have ever owned did different MPG to what officially stated!!!!.

Also testing as of now for viability so not interested in speed of flow etc. I filled 25ltr in 30mins. But that,s ok when I am doing it for practice. If I go with it then my flow rate would increase and presumably faster the water goes through the resin, the less long it will last?.

Clink on the edited link should work, the resin will purify X amount of litres. The speed, within reason, the water goes through the vessel won't make any difference.