I came across an excellent article on composting human waste at www.feralscholar.org.
Our use of flush toilets is incredibly wasteful.
Ever thought about what would happen if they quit working? The following solution may just be exactly what many will need in a crisis.
Here’s some food for thought:
“The fundamental (so to speak) error in the way we have thought about human wastes for a couple of centuries is to think of them as waste at all, i.e. as dross or discard, a substance with no value — or a substance with extreme negative value (dirty, pathogenic, icky). The collection of humanure and urine into centralised processing centres to be biocidally or biotically neutralised and then dumped into bodies of water means that we have interrupted the nutrient cycle, turned what should be a circular energy diagram into a linear one. Instead of returning the excess or byproduct of our metabolic function to the soil that produced the food we ate — as every other living creature on Earth does in a healthy biotic system — we have intervened; we “flush away” our own metabolic byproducts and (in modern times) dump them far, far from the fields which fed us. We thus impoverish the soil (by removing nutrients, minerals, elements which are not replaced), and increase the cost of agriculture by having to replace artificially the missing nutrients, etc. If a herd of antelope grazing on savannah were to club together to have their manure removed by train to the coast and dumped on a beach, it would be no more absurd…. Read More”
I cover grid-down composting – including composting human waste – in my book Compost Everything. Pick up a copy!