[permaculture] Biogas digester plans
mpludwig at facstaff.wisc.edu
Mon Mar 4 17:16:31 EST 2002
Have seen plans from the 70's using two cylindrical tanks, the smaller
nested and floating in the larger. A pipe thread is tapped in the top of
the rig and enough pressure is generated by the weight of the tank for
cooking gas. Of course one would want some kind of flame arrestor in the
line to avoid unintended pyrotechnics. Perhaps two units would be better
to allow one to work more fully while the other filled? The other models
I've seen use rubber or plastic bladders.
At 10:51 AM 3/4/02 -0800, you wrote:
>Is anyone familiar with homescale methane production via compostables and
>humanure? We are looking to install one for a site with upwards of 10
>people per day as well as clippings etc.
>P.O. Box 87
>Roberts Creek, B.C.
>"The Nazgul are in the Shire, moving among our friends
>permaculture mailing list
>permaculture at lists.ibiblio.org
Mark P. Ludwig
Poultry Research Lab
University of Wisconsin -Madison
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