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Non-chemical water treatment for cooling towers, boilers



What are people's experiences with non-chemical water treatment for
cooling towers and boilers? I've seen the case study at
http://dep.state.ct.us/wst/p2/p2casest/cooltower.htm .

Can anyone else document lower regulatory burden, payback time, or
have a list of vendors for these electronic devices?

Do these things really work as well as chemical treatment? How do you
spec it in an RFP to make sure you get one that really works?

Thanks,

Lara
-- 
Lara Sutherland
Environmentally Preferable Purchasing
Health Care Without Harm
ph: 303-377-7048
fax: 303-377-7049
LSutherland@hcwh.org



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