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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: d s windowcleaning on July 31, 2007, 11:35:02 am

Title: ro unit or not
Post by: d s windowcleaning on July 31, 2007, 11:35:02 am
can anyone help me on this i use a300 gallon per day ro unit with a di vesel as the last stage if i was to do away with the ro unit and replace it with another vesel  the first containing c100e softening resin the second containing mb400 mixed bed resin would i still produce a water with a tds reading of oooppm or would it effect water by removing ro unit would be grateful for adice on this thanks
Title: Re: ro unit or not
Post by: pjulk on July 31, 2007, 12:45:38 pm
You only need a DI to produce water at 000.

But if you are in a hardwater area which a lot of us are you are going to get through a lot of resin using DI only.

Paul
Title: Re: ro unit or not
Post by: d s windowcleaning on August 18, 2007, 09:53:39 am
still needing a bit of advice on this one as im moving soon the place im going i wont beable to set up ro for a couple of months i understand that i will probally use a lot of resin if im in a hard water area the tap tds of where im going is 157 is this classed as hard or soft water and what would be a decent size di unit i normally produce 2000ltrs per week thanks for any advice
Title: Re: ro unit or not
Post by: U.S. wfp USER on August 18, 2007, 01:22:59 pm
With a tds of 157 you are probably considered borderline between hard and soft.

I would get a 25ltr DI vessle. 

That should last you several weeks to a month.
Title: Re: ro unit or not
Post by: stephen d on August 18, 2007, 01:37:28 pm
why wont the place your going to be able to support a ro unit as surely if you have mains supply water you can put a ro unit in line.am i missing something???