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Re: Mineral removal from well water



While having no direct experience with them, there are other chemical
free/non-chemical technologies for removing hardness from water:

Federal Technologies Alerts
http://www.clearwatergmx.com/fta/index.htm

http://www.e-h2o.net/

http://www.vrtx-technologies.com/



>>> "Comer, Laura" <Laura.Comer@dep.state.fl.us> 05/08/02 04:17PM >>>
I have received a technical assistance request from a facility that
currently
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 the
starch solution challenging.   They've had recommendations of reverse
osmosis
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 that
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:
www.dep.state.fl.us/south/director/clean%20marina/Clean%20Marinas.htm