Sewage Treatment Plants (STP)

Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application.

List of process types:

• Activated sludge
• Aerated lagoon
• Aerobic granulation
• Constructed wetland
• Membrane bioreactor
• Rotating biological contactor
• Sequencing batch reactor
• Trickling filter