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RE: Industrial Water Reuse


There must be something in the water to cause this type of change. The
orange color would lead me to suspect iron build-up.  Iron can be removed by
means of ion exchange but it will drive up water treatment costs.

You mention the water is treated, how ?  Many treatment systems will
increase chloride and sulfate levels. This might shorten textile life.
Residual levels of chlorine or ozone can attack fibers and reduce life.  If
you grab a water sample and don't analyze it for a day or two, you may not
find these compounds present.

Since you have a visible and measurable effect taking place, you should be
able to find the problem without too much problem. It's just knowing where
to look.  Regards,


> ----------
> From: 	Denise Rayborn[SMTP:draybor@max.state.ia.us]
> Reply To: 	Denise Rayborn
> Sent: 	Tuesday, December 22, 1998 3:23 PM
> To: 	p2tech@great-lakes.net
> Subject: 	Industrial Water Reuse
> I'm searching for information to assist in a industrial water reuse
> issue.  Here are the bare basics of the situation:
> Water is being reused for product testing.  Textiles in this process
> water experience a shortened life expectancy of 5 - 10 days with the
> treated, recirculated water versus 45 - 50 days when city water is used
> for testing.  Also, the textiles are experiencing a color change during
> the testing (from white to orange).
> Water analysis and comparison has not produced significant revelations.
> I've searched the P2TECH archives and other resources to no avail.  Any
> suggestions for more info?
> Thanks and Happy Holidays!
> Denise Rayborn
> Environmental Specialist, WRAP
> Iowa Department of Natural Resources
> 502 E. 9th St.
> Des Moines, IA 50319-0034
> office: 515.281.8499
> fax:     515.281.8895
> email:  draybor@max.state.ia.us