Most greywater should work very well.
I recommend avoiding any greywater that might have high
concentrations of food waste. Kitchen scraps ground up in a garbage
disposal may make for excellent compost, but it will likely attract
insects or other vermin. While the cement in papercrete may
neutralize much of appealing properties of that type of organic
matter, it may not neutralize all of it.
Laundry, bath, and lavatory water may actually have positive benefits
to papercrete compared to plain water. The soaps and other items in
that water may have similar effects as borax. That's just a guess on
my part, but I'm confident that it won't hurt the papercrete. If you
actually use borax in your laundry, then I'm positive that water will
be some of the best stuff you can use.
If you can cast your papercrete in a location where you can capture
the runoff water, do it. The water that drains out of papercrete is
great stuff to recycle back into the next batch.
I've often commented about how compressing the drained but still very
damp papercrete will increase strength and the insulation factor of
papercrete, but it can also save water. If you are capturing the
runoff, compression will cause more water to drain out of the
papercrete rather than having to wait to be evaporated out. That
will allow more water to be recycled into the next batch.
I hope this helps.
--- In papercreters@yahoogroups.com, Vincent Pawlowski
<pawlowski@...> wrote:
>
> Hi,
>
> Anyone use graywater to make papercrete? Does it make much of a
> difference? I checked the archives and only found two irrelevant
> references to either spelling.
>
> Thanks,
>
> Vince
>
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