- Jan 1, 1970
Hi all, I'm planning to make a biogas digester to connect to my mobile home's sewage out port. Hopefully this will make fertilizer, a bit of methane, and possibly electricity, as I've read that anaerobic breakdown of organic matter can run a microbial fuel cell. My main question at this point is howthe fertilizer is extracted? On all the plans I've see, the tank is buriedwith an input and output pipe going down into it. Somehow, the effluent seems to flow up and out the output pipe, but I can't for the life of me figure out how that works. It seems to defy gravity. Can anyone enlighten me? Building this will save me from trips to the dump station and use my poop for good rather than being a hazardous waste.