This is the best choice - to take all your old chemistry to a household
hazardous waste pickup point so it can be dealt with properly.
Putting them into your septic system creates two issues. The first
being any potential damage to your septic/soil absorption system and the
possibility of the chemicals killing the bacteria that are the "workmen"
of the system. The second issue has to do with the non-biodegradable
chemicals passing through the system with the effluent into the soil and
potentially contaminating the ground water. Neither of these are
beneficial occurrences.
Even prescription drugs are being found in our water supply, partly from
unused pills being dumped down the toilet and partly from passing
through our bodies when we're on medication. No need to add other
chemicals to the mix.
-p
On 3/2/2010 5:11 PM, John Sessoms wrote:
John Graves wrote:
> I am considering developing my own B&W film. My film cameras are >
beckoning. Before I do this, I would like to understand how to
dispose > of the required chemicals. I would be using something
like Ethol UFG > on TMax or equivalents. It looks like fixer with
a simple treatment > (desilvering) is dumpable, but what about the
developer and stopbath? > I am on a septic system and don't want to
spoil a good system.
>
> Any suggestions either in disposal or alternative products is
welcome.
Mix your used developer and stop bath together so they balance out.
They definitely should not go into the septic system. Most areas have
a household hazardous waste disposal location or periodic collection
and you should be able to take it there.
Here in Raleigh/Wake County NC it used to be first Saturday of the
month, but they've recently expanded the service to six days a week
year round. Specifically lists "photographic chemicals" among the
itemss accepted.
No additional charge beyond what I already pay for
water/sewer/trash/curbside recycling.
Try Googling "Your Town/County State household hazardous waste" -
that's how I found out about the new facility in Wake County.
If they don't take fixer, I'd ask around local mini-labs. If you're
not generating great quantities of waste, you can probably find one
that will take the used fixer and add it to their own chemicals for
de-silvering.
They might be willing to take on your used developer and stop as well.
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