Summary

Treatment of wastewater describes the physical processes involved in wastewater treatment. In a typical wastewater treatment plan before secondary treatment, some physical treatment is always required. The physical treatment includes screens, grit chamber, communitors, flow equalization, oil and grease trap, and sedimentation. In some specific treatment physical treatment, like disinfections, adsorption and chemical precipitation are also required. It provides basic concept of these processes.

Treatment of wastewater discusses the various types of aerobic, anaerobic and facultative biological process and their application in wastewater treatment. Micro- organisms convert dissolved organic solids present in wastewater by aerobic and anaerobic processes selectively. Some of the most commonly used biological processes include, activated sludge process, trickling filters, stabilization ponds and anaerobic reactors.  Also nutrient (N and P) removal processes are briefly discussed.