at tha classic CuCl page:
<
http://users.rcn.com/rexa/Projects/CuCl_ech.html>
I found
> It should be noted that in commercial high-volume applications
> regeneration of cupric > chloride by air oxidation is too slow to be
> completely practical, so faster methodsare used to reverse the reaction,
> such as direct chlorination, electrolytic action, or > intense oxidation
> with hydrogen peroxide or sodium hypochlorite.
see, sodium hypochlorite! that's bleach, well, one kinds of bleach.
I wonder if calcium hypochlorite does the same.
ST