Sludge from sewage treatment plants gives a very good
performance in biogas production. This is inevitably the
biodegradable nature of the sludge. The volume produced is
ten times more than the experience of the anaerobic digestion
of organic waste from the landfill. The pH does not decrease
significantly from 7.17 to 6.68 which as is shown in Fig. 6,
biology and biodegradability of sludge from municipal
wastewater anaerobic digestion makes them easy to do.