Primary Sludge Includes all solid substances which got setded after primary treatment. It traps lot of microbes and debris. Activated Sludge is sediment formed from effluent after secondary treatment. It contains bacterial floes.
Primary Sludge Includes all solid substances which got setded after primary treatment. It traps lot of microbes and debris. Activated Sludge is sediment formed from effluent after secondary treatment. It contains bacterial floes.