wrote:
Since nobody wants to shovel out a composting toilet or haul away jugs
of urine, I am thinking of something a little more complex. Some form
of sterilization, followed by filtering out solids, followed by
compaction of solids into bricks, followed by removal of nutrients from
the liquid, etc. Then the liquid is used to water lawns.

That type of system does exist and is in use in places like office
parks, some kinds of mfr'ng plants and golf courses. nstall one.
Recycled water is used for vehicle washing, grounds watering, even
toilet flushing...anything EXCEPT potable applications.

Here's one example: http://www.ballamwaterslot.co.za/gem1.html

And another type of system:
http://www.ecovillagefindhorn.com/biological/index.php

A US company named Ocean Arks installed one of the first systems of this
type in the US at the Ben and Jerry's Ice Cream Plant in VT (NH?).
--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/store/custo...0&cat=6&page=1