If you like this you may be interested in a new waste disposal system being trialled in my city (Perth, Australia) - http://www.anaeco.com/index.php?option=com_content&task=view.... It basically takes general household garbage diverting approximately 70-85% of it from landfill. Plastics, glass, metals and biodegradable organic matter are automatically separated out at different stages and the whole plant uses biogas generated from the organic matter to generate power (excess power is fed back into the grid).