May 14th, 2005

bswing

Laren Corie's Composting Van Toilet

Via Laren Corie, on the Vandwellers mailing list:

I am slowly developing a system, which I hope I will be able
to sell over the Internet, but right now there are still a couple
of parts that I need to develop, before its ready for the market.
However, I can give you my opinion on how to put together a real
good system for a van.

Okay, first there are a variety of approaches used in the composting
toilet industry. I won't get into anything about the big systems, except
provide this link to "The Humanure Handbook" which is the bible
of residential composting toilets.

http://www.weblife.org/humanure/default.html

There is a list of parameters, which help define the design
of a system for use in vans, RVs, and boats. Size was critical.
So is the effect of the vehicle movement. There have been
a couple of systems designed for this market. Both were
much too large, for our purpose, and one even required a
step up, with the seat about 24" above the floor. Both
require nearly 5ft² of floor space. One system had a
clear-out door on the bottom-front, and developed leak
problems. Yuck! What I have designed is a "desiccating,
urine separating, batch type, sawdust, composting toilet"
That is the shortest description I can give. What that
means, will be explained below. I will tell you how to,
very easily, make your own van composter, which has
every function my fancy design has, except for the
urine separation function, and even offers a working
technique to achieve that.

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