"Zabaleen" is the Arabic term for those visionary and enterprising people whose culture revolves around recycling. The Zabaleen are experts at "transforming one man's garbage into another man's gold" and aspire toward a net zero-waste economy. Applied and supported this could lead to true energy independence, not only by radically reducing our demand for "raw materials" and hard to extract natural resources but by recycling other less obvious phenomena and materials that are now wasted.
Thanks to Engineers without Borders Palestine leader Amer Rabayah for sharing this website with its clear designs -- yes Amer, these cement underground domestic biogas systems are ideal for handling both household kitchen waste and toilet wastes in a safe and productive way. I agree that this is the design you should... use in the West Bank and Gaza to eliminate the wastewater burdens contaminating the watersheds while providing inexhaustible free fuel for cooking and electricity generation. Go with this system by all means!