The capacity of a garbage can is 24 gallons
Compost.
Compost.
Yes.
A kitchen midden is a ancient pile of shells, or other garbage dumped from domestic waste.
suilage is waste that is disolved of excreta,it consist of waste water from kitchen,bathroom,laundary etc.
be buried underground
on a regular basis
Yes, you can.
It would be my suggestion that you need to have the sewer "snaked" out as there is an apparent obstruction in the run from the bath area to your septic tank or sewer line and the the kitchen is "up-stream" from that bathroom, or, perhaps the shower is on the back side of your kitchen waste and the obstruction is associated with the showers drain and waste run...i.e., a hair clog, etc, is building up and combining with the waste material from the kitchen. Perhaps there is a clean-out plug under the kitchen sink which you can run a small "snake" through.
12" center of waste to the floor
You can recycle cans plastic bottles, and newspapers.