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RE: Mineral removal from well water


Indirectly related to your question...
Have they evaluated elimination of the starch kitchen?  Radiation-curable
adhesives may be capable of performing the same job while also eliminating
the need to operate production line heaters following starch adhesive
application (if it like other operations I've observed).  Starch adhesive
waste, wastewater, and packaging waste (if they're still using 50 or 100#
sacks of starch would also be eliminated as well.  There may also be some
significant energy savings in replacing the starch kitchen and production
line heaters with a radiation source to cure the new adhesive.


-----Original Message-----
From: Comer, Laura [mailto:Laura.Comer@dep.state.fl.us]
Sent: Wednesday, May 08, 2002 4:18 PM
To: Abcarian, Julie; Babb, David; Galocy, Betsy; Graves, Aprilia;
Humphreys, Charles; Scarboro, John; Syrdahl, Slade; Wielkens, Donatus;
Bodin, Christopher; Burns, Richard; Cooey, Sally; Gephart, Albert;
Leonard, Brenda; MacCormac, Deborah; Richards, William R.; Thompson,
Paul; Valin, Debby
Cc: P2Tech??? (E-mail)
Subject: Mineral removal from well water

I have received a technical assistance request from a facility that
uses a water softener (potassium chloride) to remove minerals (primarily
calcium) from well water for use in their boilers.  Volume of water treated
is ~170,000 gallons/month and they've been told by the boiler manufacture
this treatment is essential for efficient operation of the boilers.    The
water is then reused as make  up water for a starch mixture used in the
manufacture of corrugated cardboard.  The problem is the salt content from
the water treatment makes maintaining the appropriate gel temperature for
starch solution challenging.   They've had recommendations of reverse
or nanofiltration but those recommending it have indicated extremely high
operational costs with these systems.   The facility would like
recommendations for these and other alternative treatment but along with
they are interested in getting some idea of the daily operational costs
involved with any alternative treatment. 

The current system is only costing them about $3500/year to replace the
filter materials and about $9/day for potassium chloride.  

Laura M. Comer
Pollution Prevention and Clean Marina Program Coordinator
FDEP - South District
PO Box 2549 Fort Myers, FL 33902-2549
239/332-6975 x 170      FX 239/332-6969
P2:  www.dep.state.fl.us/waste/categories/p2/default.htm       
Florida Pollution Prevention Roundtable www.flppr.org
CMP:  www.dep.state.fl.us/law/Grants/CMP/default.htm
local marinas: