by sallygardens on Sat Apr 19, 2008 5:50 pm
Belen, how goes your toilet?
I've just been reading The Humanure Handbook which is a FANTASTIC read. It isn't just about composting human manure, it contains excellent chapters on world pollution and consumption problems all delivered with a dash of wit. I'd urge anybody with even a remote interest in living sustainably to read this gem.
Worms are mentioned with regards to composting human manure and actually it says that there is no need to add them. At first a thermophillic reaction takes place, that means the compost heats up to well over 37C which would kill or drive worms out. The thermophillic reaction is important for killing off pathogens in conjunction with the 2 year curing time (timed from last use). After the thermophillic reaction the worms come up through the heap later to complete the composting process. There's quite a bit about how to prevent the heap becoming smelly but having said that it's all very simple. It's basically adding enough carbon and air gaps to balance the nutrients, absorb excess fluids and cover the deposits to keep flies off ... sawdust, moss, hay, straw. Only sawdust that doesn't derive from pressure treated (nasty chemicals) and hasn't been kiln dried (too dry) should be used.
Having looked at the book I'd advise anybody thinking of humanure composting to read it in order to get it just right, just as we'd read a recipe when baking a cake. I'd also challenge anybody who thinks composting human poo is disgusting to read the book because after reading it you'll be converted ... actually flushing our poo away in what ultimately becomes our drinking water is totally unsustainable, polluting, disgusting and wasteful of something that could easily be a magnificent and perfectly safe (when done properly) resource. I'm a convert.
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