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Spiral Wound Membranes - Feed Spacer

Spiral Wound Membranes - Feed Spacer

Spiral Wound Membranes - Feed Spacer

(OP)

 Hi...

 I am starting to work using R.O. Spiral membranes, I would like to understand when manufacturer provide information as 80 mil, 43 mil...what is exactly part of the membrane use to have this kind of measurement?
 If I am intending to calculate filtration area  have I to consider this number?
 Please, feel free to comments and advise....

 Thanks in advance,

 Araujo

RE: Spiral Wound Membranes - Feed Spacer

The polyamide thin film composite membrane consists of four layers:

1.  crosslinked polyamide semipermeable thin film;
2.  polyamide intermediate transport layer (colloidal gel);
3.  porous polysulfone support membrane;
4.  reinforcing fabric (woven or nonwoven).

The porous support membrane (#3) is the thickest layer by far and seems consistent with the thicknesses you've mentioned above.  This is merely my own educated guess.  I would contact Dow Chemical or one of the membrane manufacturers for a definitve answer.

S. Bush
www.water-eg.com

RE: Spiral Wound Membranes - Feed Spacer

(OP)
Thank you....I am gonna try to get this details...

Shanzon

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