What is sewage
Sewage is characterized in terms of its physical , chemical and biological composition .
THe main physical , chemical and biological constituents of domestic sewage may be summarized as follows :
Physical Properties : colour , odor and solid
Temperature Chemical COnstituents :
Organic-Carbohydrates , Fats , Oil , Grease , Proteins , and Surfactants Inorganic _pH , Chlorides , Citrogen , Phosphorus , Sulfur Gases -Hydrogen CUlphide , Methane , Oxygen .
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