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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: lee_dewing on May 26, 2006, 01:02:03 pm

Title: resin in hard water area
Post by: lee_dewing on May 26, 2006, 01:02:03 pm

hi i live in essex anyone out there running a resin based wfp system in a hard water area.
I realise ro is the norm but due to lack of space was wondering how much resin would cost you a week say using 300 litres a day?

anyone out there doing this due to space prob's or just prefer simplicity.

Title: Re: resin in hard water area
Post by: JM123 on May 26, 2006, 01:47:44 pm

to work out how much resin you need

500 000 / tds (incoming water)

This will give you an idea of the total volume (in litres) of pure water you should get from a 25ltr bag of resin.

My tap tds is 350 so I would get 1430litres.  So I'd be looking a bag a week at 300ltrs per day.

Title: Re: resin in hard water area
Post by: macc on May 27, 2006, 01:02:12 am

Lee, cant you fit an ro in your van?

macc

Title: Re: resin in hard water area
Post by: lee_dewing on May 27, 2006, 10:11:23 am

understand what your saying ro in van can't get anywhere near to park outside my flat, will think about doing ro at parents.
thanks macc
thanks jm123 for the equation(where you find that one out?)

Title: Re: resin in hard water area
Post by: Andrew McCann on May 27, 2006, 10:42:16 am

Hi Lee

I use a 200gpd RO.

TDS into the RO 420...  TDS out of RO.. 8.  SO:

500000/8 = 62500 ltrs total pure form one 25 ltr bag of resin.  300 ltrs per day x 5 days a week = 1500.  So. 1 bag of resin lasts me for over 41 weeks work per man. Actually its about a year because we use more like 200 ltrs per day per man.

Hope this helps

Andrew