Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: U.S. wfp USER on February 12, 2007, 03:17:14 pm

Title: 4040 RO rejection rate
Post by: U.S. wfp USER on February 12, 2007, 03:17:14 pm

Does anyone know the rejection rate of a 4040 RO unit?

Title: Re: 4040 RO rejection rate
Post by: Roy Harding on February 12, 2007, 03:34:18 pm

Mine is 50% pure 50% watse but you can set it up as high as 60% pure 40% waste.

Roy

Title: Re: 4040 RO rejection rate
Post by: sair on February 12, 2007, 03:35:10 pm

i run mine at 20 rejection with 80 keep

Title: Re: 4040 RO rejection rate
Post by: U.S. wfp USER on February 12, 2007, 03:41:54 pm

Quote from: sair on February 12, 2007, 03:35:10 pm

i run mine at 20 rejection with 80 keep

Care to explain your set up and how you maintain this 80/20?

Also is that a high pressure or low pressure membrane?

Thank you.

Title: Re: 4040 RO rejection rate
Post by: Roy Harding on February 12, 2007, 04:44:02 pm

Mine is a high presure membrain when i set mine up they recomended a 50/50 setup as they told me the lower the rejection rate the more sludge you had in the housing.

Roy

Title: Re: 4040 RO rejection rate
Post by: U.S. wfp USER on February 12, 2007, 09:18:42 pm

Are you using a booster pump to produce that 50/50?

Title: Re: 4040 RO rejection rate
Post by: sair on February 13, 2007, 02:24:52 pm

the membrian within industry standard is normally set to somewhere between 20-25 % rejection rate

i will allways booster set the 40x40 as they perform better saty cleaner and last longer

Title: Re: 4040 RO rejection rate
Post by: U.S. wfp USER on February 13, 2007, 03:32:44 pm

Sair,

Thanks for your insight.  What booster do you use?