Batch experiments on raw wastewater were performed using sludge from the reaeration tank of a contact stabilization activated sludge plant operating at a very high sludge age. After a short ...

Bench-scale studies of the addition of powdered activated carbon to contact stabilization activated sludge were conducted to find the lowest detention time and to determine effluent quality benefits.

Domestic sewage contains various organic substances, mainly from toilets and kitchens. Now research shows that this ewage contains a source of energy that can be harvested by using hungry bacteria.