The first Carbon exhibition in North Africa and Middle East region – Djerba, September 22-24, 2004 Methane from WWTP Technical issues : –WWTP for 157000 m 3 /day (pretreatment, primary, decanting unit, sludge treatment); –Biogas collecting : 31350 up to 41405 m 3 /day; –Expected electricity generation : up 50%; Financial issues : –Total cost of the project : US $ 150 million Timing : –Starting of works : 2007 ; –Operation : 2008.