[L.Doubtfire - The Blade Runner]

If I wanted to start producing pure water using the D.I. method,
Can members tell me what equipment I would need,and also the
Possible cost/ecomomy valuation.Also approx. how many liters
Of pure water would be produced from a 25 liter bag of resin.
My tap water reading is 120 p.p.m. Thanks for replies.


Lewis  Doubtfire.

[Andrew McCann]

Hi Lewis.

At that TDS eading an RO would probably be a worthwhile investment. But thats no your question.

You would only need a decent sized DI vessel for say around £60 to 70. A bag of resin and a bit of hose with connections.

There is a formula for working out how much water you will get from a 25ltr bag of resin. You divide 500000 by your TDS in and that will give you your pure water out figure. So at 120PPM you will get around 4166 ltrs of pure water per 25 ltr bag.

Hope this helps

Andrew

[stuart webster]

You could use extra tanks with resin that takes the ppm down to 30.
That will leanthen the life of the resin

[Moderator David@stives]

 would forget the formula as the desolved solids vary from area to area.

I get 3 times the amount out of my resin than the calculations state.

For Di only all you need is  a van tank fill with tap water then feed it through a pump to the di vessil full of resin then to the hose.

I get at least 3 months out of 18 litres of resin, that works out about
£60.00

My tds is 73

Dave

[L.Doubtfire - The Blade Runner]

Thanks Andrew,your very helpful.At present I`ve an R.O. unit,but as 500 liters
Seems to me ages these days mainly because I`ve gone back to `LedgerMating`
And Ettore `Back-Flipping`,if and when anything goes wrong with my R.O. would
I be better trying a D.I. set-up for producing pure water.I`m pushing 60,so I aint a
Young kid anymore.These new R.O. units by Ionic are mega-bucks.There`s such
A lot of waste water with normal ones.See how it goes anyways.My tap water used
To be around 260 p.p.m. but after water work board had done some stuff its around
120 possibly less.


Lewis  Doubtfire.

[macc]

DAVE, how many ltrs, you only mentioned 3 months. cheers. macc.

[Moderator David@stives]

Sorry i gave up counting ages ago, i use approx 1800 litres a week.


I know i got at least double the formula for working out useage.

[gaza]

YOU WOULD WOULDNT YOU

 GAZA

[dai]

Lewis ,you could save a lot using the rain water out of a but and pump that through your resin. Water was coming off my roof yesterday at 4 ppm TDS. You could get away with using that untreated. DAI

[gaza]

dear david your not often wrong ,but your wrong this time.you need to polish the water after going through the 1st di vessel into the storage tank its then pumped out through the polishing tank,that way youve more control over the ammount of resin you use.
If you only use  1 vessel you  would have no chance of doing it if you lived in a hard water area,but you live in a soft water area I hear you say,so you would still get more from your resin using two tanks cus once your resin is above 015 your throwing it away

 gaza

[gaza]

DAI: It states when using an ro the water must be drinkable before putting it through an ro,dont think rain water is drinkable when stored in a water but?
 gaza

[dai]

Gaz, I allways use two DI vessels untill I change the resin in one, and both are turning water out at 0 ppm, Then I just use 1 untill the TDS starts to go up.
Now back to what I was saying. If the water comes off the roof at 4ppm, and I collect that water in a rain but, I have a but full of 4ppm TDS water. If I was to then pump this rain water through a DI vessel, the Di has only to remove 4ppm, not 52 ppm from my tap. Some guys using a Merlin RO unit are lucky if they get 4ppm water out of it.
Also some guys are quite happy to use 4 ppm TDS water to clean windows with.
What's the difference between 4ppm TDS water out of a DI vessel, and 4ppm rainwater? I may be missing something here, but 4ppm is 4 ppm. Dai

[gaza]

Totally agree with you Dai,but just reading some fancy word meaning tap  water
somewhere the other night,tap water and a word meaniing non pallitable cannnott be used. Maybe were both missing something


  gaza

[Moderator David@stives]

Gaza

I am not wrong , i have been using this method for months and months and it WORKS!!.

You only need one di vessil and that is it.
When my tds starts rising i put a fresh di vessil after the diminishing one, but this is somewhat  a waste of time because once it starts rising it goes up rapid and can start contaminating your fresh di vessil with an even higher tds reading than your tap water.
So you have to keep an eye on it you will probably get 3 weeks max.

There is a name for it but i cant remember off hand.

Some companies would have you believe you need loads of different vessils in a di system but they have to justify there prices ,so they make it look more complicated than it is.
Some systems have 2 types of resin ,one for positive and one for negative anions.

What system do you use ?  are you an Ro man or di

Dave

[macc]

cheers dave

[neil100]

I checked my TDS tap water last night 57.

After going through RO unit before DI vessel it was 001.

Gutted

[gaza]

David :tip 1[ DONT TRY A TEACH A MASTER HOW TO SUCK EGGS MONTHS /MONTHS
WAIT TILL YOU CAN SAY YEARS /YEARS AND EVEN MORE YEARS WFP

 LESSON 2/.  WERE YOU ARE GOING WRONG
PUT A VESSEL AFTER THE DIMINISHED ONE [WHY]
YOU WILL ONLY GIVE YOURSELF PROBLEMS
MASTER SAYS PUT IT IN FRONT OF YOUR SPENT RESIN
AND LEAVE YOUR SPENT RESIN TO POLISH
WHY THROW GOOD RESIN AFTER BAD  [TO COIN A PHRASE]

TRY USING ONE VESSEL ON 265TDS MAINS AND YOU END UP WITH A HIGH TDS ON THE OTHER SIDE NOW IF YOU USE YOUR SPENT RESIN TO POLISH YOUR UP TO 000TDS
IT WILL SAVE YOU  SQUIDS IIN RESIIN REPLACEMENT EVEN AT 72 TDS?[THINK THATS WHAT YOU SAID YOURS WAS]

NOW TO ADDRESS WHAT TYPE OF SYSTEM I GOT ,WHIICH SYSTEM WOULD YOU LIKE TO KNOW ABOUT?

THE RO_MAN RO SYSTEM
THE TWO VESSEL DI SYSTEM

OR THE £3000 ELGA SYSTEM WIITH ANION AND CATION RECHARGEABLE RESINS
WHICH PRODUCES 6,000 LITRES OF LAB EQUIVELANT WATER BEFORE YOU START TO GET TO 000 TDS LEVEL THEN 6,000 LITRES + AT 000TDS BEFORE REGHARGING
WITH ACIDS AND THE LIKE.

  GAZA

[Moderator David@stives]

Gaz

Speak English man

Have you been drinking

Well it works for me ,very well actually.

Have we got any arbitrators here to say who is right lol

Dave

[Moderator David@stives]

 LESSON 2/.  WERE YOU ARE GOING WRONG
PUT A VESSEL AFTER THE DIMINISHED ONE [WHY]
YOU WILL ONLY GIVE YOURSELF PROBLEMS
MASTER SAYS PUT IT IN FRONT OF YOUR SPENT RESIN
AND LEAVE YOUR SPENT RESIN TO POLISH
WHY THROW GOOD RESIN AFTER BAD   [TO COIN A PHRASE]


What ?

[craig jwc]

It might be a stupid question but does it matter if your set up goes

Tank - Resin - Pump  ??

I'm looking at putting inline filters between the tank and the resin and between the resin and the pump