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Although I have no information about the chemical discussed in your
message I do have a potential alternative to chemical treatment of cooling
water for consideration.
Electronic treatment: We have dealt with one company that reports a
savings of over $4000.00 annually on chemical treatments by installing such
a system. They also reported a very short payback time on the initial
A second company in our area is installing a similar system but no
reports on their progress are available at this time.
For more detailed information http://www.pnl.gov/fta/11_non.htm
From: firstname.lastname@example.org [mailto:email@example.com]
Sent: Tuesday, August 22, 2000 2:26 PM
To: 'CWEA Ind&Haz Waste Committee'; P2 - Western Regional P2 Network
(E-mail); P2Tech Listserv (E-mail)
Hello everyone. I apologize for cross postings.
One of my local hospitals is considering using an aqueous solution of
glutaraldehyde as a cooling tower biocide.
They intend to discharge the cooling tower "blow-down" (water mixed with the
glutaraldehyde) directly into the sanitary sewer system at a volume of
approximately 360 gallons per day (1/4 gallon per minute on average) with a
glutaraldehyde concentration of approx. 150 ppm in the effluent.
Do any other agencies allow discharge of glutaraldehyde into the sewer
Is glutaraldehyde a problem in the sanitary sewer system?
Is there a less toxic alternative?
I have searched the web for "glutaraldehyde" and for "cooling tower" and got
a lot of interesting information, but nothing about discharges to sewer
As always, any information you can share would be helpful. Thank
you! -Tracy Wyhlidko
Message sent by: Tracy Wyhlidko, Pretreatment Coordinator, City of Eureka,
4301 Hilfiker Lane, Eureka, CA 95503 Tel: (707) 441-4362, Fax: (707)