Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Ian Lancaster on June 18, 2007, 06:07:35 pm

Title: Lowest product/waste RO ratio?
Post by: Ian Lancaster on June 18, 2007, 06:07:35 pm

I have a nasty suspicion the local water company is going to demand I get a meter and pay-as-I-go 
 
I currently use a 300gpd RO-man, but I think the waste ratio is very high.  Does anyone know any figures of different RO product/waste ratios for comparison?  Not interested in Ionics, as they only supply van-mounts and I need static.
 
Cheers 
 
Ian

Title: Re: Lowest product/waste RO ratio?
Post by: Clive McDonald on June 18, 2007, 07:22:56 pm

Using a booster pump helps, both with purity and waste.

Title: Re: Lowest product/waste RO ratio?
Post by: Bobs Window Cleaning on June 18, 2007, 07:32:01 pm

Ian

I am on a water meter and use a static 1000IBC tank. I phoned the water company and they told me its cost £2.39 per 1000 litres including sewerage. My ratio is around 3-1 so it costs me under a tenner to fill the tank.

Bob

Title: Re: Lowest product/waste RO ratio?
Post by: neil100 on June 18, 2007, 08:21:12 pm

I am not on a meter but have a basic 40 40 Ro system. I have 2x 10" pre filters.

I use a booster pump because the water pressure is Naff from the tap.

I have my valve set on flush all the time as I am filling my 1000 ltr IBC tank.

I get per minute 9 ltrs of waste water to 4 ltrs of pure water.

My tap TDS is about 90 but my tds after the RO without useing any resin is ZERO.

If I did not use the booster pump I get about 7 ltrs waste to 1.8ltrs pure.

Nel

Title: Re: Lowest product/waste RO ratio?
Post by: matt on June 18, 2007, 08:30:37 pm

ive fitted a little tap to the waste pipe, its about 1/2 open, it cuts the waste by ALOT

when you flush the membrane, just open the waste tap fully and that will flush all the crap away

with the tap fitted now, i flush every week