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Re: Used X-Ray Developer

Silver is the main issue in the fixer.  Fixer can be treated to remove
silver--but it does require some attention to the unit to make sure that
the treatment unit is properly operated and maintained (many small
business folks forget to maintian the systems, which then become "full"
and stop removing silver).  Some developers may have toxicity--here in
California agencies have found that certain developers fail the state's
fish toxicity test, which means that they are a hazardous waste.  Since
septic systems are more sensitive to pollutant discharges and to
wastewater toxicity, it wouldn't be my first choice to put them down the
drain in the situation you describe. Of course, the mercury releases
from the dental office are probably much more of an environmental
concern than the X-ray developer and fixer, but that's another whole can
of worms.

Kelly Moran
TDC Environmental

Tammy Allen wrote:
> I am not an expert, nor do I pretend to be, but the main concerns in the fixer/developer is the silver and the pH.  A few years back, I recall a similar situation where a veterinarian had a silver recycler pick up the waste for recycling a minimal to no cost. Some facilities have small silver recycling units on-site, then adjust the pH before disposal to the sanitary sewer system.  This may be something long-term.  As an FYI, one of our local hospitals will be converting to digital x-rays to eliminate fixer and developer use.
> Tammy L. Allen
> Senior Environmental Specialist
> Pinellas County Environmental Management
> 512 S. Ft. Harrison Ave.
> Clearwater, FL  33763
> (727) 464-4761
> Fax (727) 464-3174
> e-mail: tallen@co.pinellas.fl.us