Explain the Typical Wastewater Characteristics?

Total Suspended Solids = 100 - 350 mg/L (200 mg/l is the typical value)   

BOD₅ = 100-300 mg/L (200 mg/L is the typical value)  

33% of the total solids (S_T) are suspended (60% of these suspended solids are settle able and 40% are colloidal) and 67% are dissolved.

Total Solids (S_T) = Fixed or Inorganic Solids (S_F or S_I) + Organic or Volatile Solids (S_V or S_O)  

The solids removed during primary and secondary treatment are referred to as sludge (high solids concentration).