In most of sewage factories and sewage offices, activated sludge method is used for their effluent treatment. What does activated sludge suggest in the activated sludge method? About activate sludge Activated sludge is microorganism such as bacteria and animalcule and living things found in various place such as river, water conduit, soil, etc. It also can be … Continue reading About activate sludge / sludge drying