Waste Water Treatment

Primary Treatment or Mechanical Treatment
Secondary Treatment or Biological Treatment
Tertiary Treatment or Advance Biological or Chemical Treatment
Sedimentation
Settling Tank
Flocculation and Precipitation.
Physical Treatment
Chemical Treatment
Screening
Grit Chamber
Flotation or skimming tank
Sedimentation
Coagulation
Flocculation
Filtration
Screen Chamber:
clarification
Coagulation
Aerobic Treatment
Activated Sludge Process
Trickling Filter
The steps in treatment:
Collection
Preliminary treatment
Primary treatment
Secondary treatment
Advanced treatment
Disposal of residue
Precipitation
Nitrogen Stripping
Chlorination
Sludge Dewatering and Drying