I think it was Ryuji Suzuki who wrote
here that silver in the sewer rapidly is converted to silver sulfide
which is very inert and apparently unlikely to be able to cause any
problems. No shortage of sulfur compounds in sewerage!
Richard Knoppow wrote:
>
> ----- Original Message ----- From: "Steven Kershaw" <
stevendidit@xxxxxxxxxxxxxxx>
> To: <
pure-silver@xxxxxxxxxxxxx>
> Sent: Sunday, November 29, 2009 12:34 PM
> Subject: [pure-silver] Re: "Green" Developer
> Snipping here....
>
>>> One thing I would ask you to bear in mind is that my
experience is now some
>> three to four years past as I closed my lab in 2005. If
anything the
>> significant reduction in the amount of film being processed
has dropped off
>> so dramatically that few if any "systems would be at risk for
reaching
>> threshold levels that would require action. Of far greater
concern these
>> days are the micro-organisms that thrive in water systems that
are resistant
>> to typical treatment and purification processes. Portland
Oregon just this
>> week announced that ALL Westside city water should not be
consumed without
>> boiling for ten minutes because E. coli had been detected
above the
>> acceptable threshold level. (suspected causes... an animal
had died and
>> been washed into the system or fecal contamination, both very
difficult
>> events to transpire considering the "closed Loop" nature of
today's water
>> systems.
>>
>> Good luck!
>>
>> Steven
>> The beautiful north Oregon coast.
> Makes me wonder about the silver. Silver is an antiseptic of
sorts. One reason for concern about it is that it kills some
micro-oganisms deemed necessary to other life such as fish. Now,
dependin on the kind of pipes you have its likely that the silver from
fixing baths or color chemistry dumped down the drain will plate out on
the inside of the pipes within a short distance. It appears that silver
can cause problems with septic systems by killing the micro-organisms
they need to work but there is information on the amount that is
tollerable. In any case, as you say, its easy enough to remove nearly
all the silver from the solutions, and if there is nothing else harmful
in them, down the drain they can go.
>
> -- Richard Knoppow
> Los Angeles, CA, USA
>
dickburk@xxxxxxxxxxxxx
>
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