My current vision of domestic-waste-streams-to-quality-food looks like:
* Most stuff goes to feed chickens, who directly produce eggs and manure from it.
* Stuff that's not good for chickens, plus perhaps chicken manure, goes to wormery (just starting up), producing quality compost, liquid fertiliser, and perhaps excess worms as chicken feed.
* Excess liquid from wormery and nutrient-rich liquid wastes might go to a W.arrhyza tank, recovering nutrients that can be directly fed to chickens.
Note well that I do not include human wastes in this stream; I consider '#humanure' to be irresponsible because of the health risks, and decidedly not worth the recovered nutrients.
A better permaculture way to consider humanure is as part of an "outer cycle"; feed human wastes, composted by a _separate_ worm-bed, to a wild forest, if you must. The nutrients will eventually work their way safely back to your community, that way.
Friends don't let friends mess around with food and human poo.
@cathal afaik there has is no evidence health risk with properly composted human feces. Do you have some specific doubts about it?
Main trouble with human feces (and urine) in general, as I can see, is the pharmaceuticals in them. That is why I'd make an additional mushroom-composting cycle if possible.
@arteteco
Additionally, engineering for idiot-proofness is generally bad engineering to begin with, because idiots are geniuses at idiocy. So we usually accept some individual risk. But disease is not an individual risk: if we let X% idiots contract sickness by designing systems with an X% failure rate from idiocy, we end up with >X% community morbidity through transmission of disease to others.
@arteteco
The trouble lies in "correctly composted". Engineering a fecal composting system that an idiot can't fail to use correctly, without a pasteurisation step*, and somehow without a fecal handling step, seems impossible. Even correctly making a latrine is hard enough that it leads to disease, much less a fancy latrine that people later dig up to grow food from.
* hot composting, requiring as it does "correctness", does not count.