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Posts tagged “solar drying”

By Robert Rapier on Dec 19, 2009 with no responses

German Robot Pigs

“What I need for this project”, I explained to my young son, “is an army of German robot pigs.” His eyes went wide. “And I know just where to get them…” I have a project on my desk right now to look at avenues of disposal for sewage sludge in a specific location. There are lots of things you can do with sewage sludge, but it is obviously dependent on a number of factors. There are places where farmers spread it on their fields, there are places where it is incinerated, and there are places that it is land-filled. And there are other options beyond that. In order to utilize sludge for energy, the water content is obviously critical. Too… Continue»