[Ronja] Discharging used etchant into the toilet

[Karel Kulhavy]

---- Tomasz Koprowski <klapek at kki.net.pl> schrieb:
> On Tuesday 25 of March 2008 19:33, you wrote:
> 
> > It consists of chlorine and iron atoms and water. Both occur in normal
> > water naturally. Chlorine atoms occur in large amounts in table salt,
> > iron atoms release from steel pipes.
> 
> So that's safe. Thanx. What about sodium persulfate? It's the main ingredient 
> of "B327", a common etchant sold here in Poland.

BTW I wonder how much copper actually leaches into water when using copper roofing.
The copper oxidizes and I guess some of it gets leached out and flushed down the gutter.
Especially with acidic rains from air pollution.

Some water companies are picky however. I asked mine if I can discharge used denatured
ethylalcohol and they said no. I wonder if vomiting into the toilet after consuming
too much alcohol is forbidden too.

They take nasty chemicals back in the apotheke however.

CL<
> 
> Greetz,
> Tomek