RE: Water reduction for bronze art foundries

["Callahan, Mike" <Mike.Callahan@jacobs.com>]

David,

Fifty gallons of water per day could be handled in a drum evaporator
provided there are no volatile organics in the water.  EMTEC in Lake
Forest CA markets a unit that can evaporate up to 2.5 gallons per hour
from a 55 gallon drum.  Power consumption is 9000 watts, and assuming a
24 hour day for processing, the daily cost would be $19 (assuming
$0.09/kW-Hr).

Disposal costs for the sludge will depend on copper, zinc, and lead
content.  If the copper content is high enough, someone could do a
milk-run and sell the sludge to a copper smelter.  The unit costs
@$4,000.  For an extra $1,000, EMTEC offers a vapor condenser so that
water vapor can be recovered for reuse.  As of August 1994, EMTECs
number is 714 583-0512.

Regards,
Mike.callahan@jacobs.com
 ----------
From: dleviten@pprc.org
To: 'p2tech@great-lakes.net'
Subject: Water reduction for bronze art foundries
Date: Friday, February 07, 1997 10:17AM


Talked to a guy in Oregon about small art foundries located in small
Oregon
towns making bronze(copper) items.  They may be forced to get water
permits
because of copper problems in the small towns' water treatment systems.
They release to sewer on the average of 50 gallons a day of water.  Has
anyone worked with art foundries and heard of any ways they could go to
zero discharge on water.  This would allow them to avoid this whole
permit
issue, which would probably put a number of the smaller art foundries
out
of business.

David Leviten
Pacific NW Pollution Prevention Resource Center
Seattle, WA
phone: 206-223-1151
dleviten@pprc.org
web site:  http://pprc.pnl.gov/pprc