using human waste as fertilizer isn’t a good idea.
human waste contains everything that a person has consumes. this includes disease causing pathogens and parasites.
if it were to be used as a fertilizer it would need to go through multiple stages of expensive processing and testing to ensure safety. it’s far more cost effective and safer to use food by-product like fish cuttings to create fertilizers.
Treated waste water sludge is very commonly used here in Sweden albeit using anaerobic digestion rather than regular composting. High temperature composting would kill any pathogens so you can absolutely get permission to use a composting waste system in small scales. For larger scale waste treatment it is with anaerobic digestion, as mentioned.
The captured methane is typically used for fuel, e.g., in public transport.
As far as I know the sludge used for fertilizer needs to be certified under something called REVAQ. Some controversy does exist surrounding safe levels of the various harmful substances and perhaps PFAS in particular.
But what do you do with the methane, can’t story it and if you burn it, you release the CO² which was the point of burying fertilizer while it’s CO² carbon credit value is less than the price of the fertilizer itself.
What about the nutrients in the waste? Why not compost it, capture the methane offgassing, and store that?
using human waste as fertilizer isn’t a good idea.
human waste contains everything that a person has consumes. this includes disease causing pathogens and parasites.
if it were to be used as a fertilizer it would need to go through multiple stages of expensive processing and testing to ensure safety. it’s far more cost effective and safer to use food by-product like fish cuttings to create fertilizers.
Not to forget: It contains a ton of medicine as well. If you want to have antibiotics in your salad, use human waste as fertilizers.
you’re absolutely right, I forgot about those and it’s probably worse than the parasites.
Probably mucroplastics too?
Treated waste water sludge is very commonly used here in Sweden albeit using anaerobic digestion rather than regular composting. High temperature composting would kill any pathogens so you can absolutely get permission to use a composting waste system in small scales. For larger scale waste treatment it is with anaerobic digestion, as mentioned.
The captured methane is typically used for fuel, e.g., in public transport.
As far as I know the sludge used for fertilizer needs to be certified under something called REVAQ. Some controversy does exist surrounding safe levels of the various harmful substances and perhaps PFAS in particular.
deleted by creator
But what do you do with the methane, can’t story it and if you burn it, you release the CO² which was the point of burying fertilizer while it’s CO² carbon credit value is less than the price of the fertilizer itself.