I'm wondering whether it would be practical to build a "micro waste treatment plant?"
By this I mean a treatment plant for sewage and household waste water that is sized for a single home. It would have to be self contained, fully automatic, self-monitoring, relatively inexpensive (say less than $10,000), and small enough to locate on a typical property, away from the house, possibly underground. The discharge should be "drinkable" water, or nearly so.
This would be intended as an alternative to septic systems or holding tanks, for places where those solutions aren't feasible.
Does anyone out there know of something like this?
If not, whoever builds the first one - don't forget to include my name on the patent application :-)