Chapter 9
Physical Characteristics:
They settle at the bottom
of a container. They may be in the form of suspended
solids which are carried in liquid flows. Their tem-
perature is usually higher than the surroundings. The
odours may arise due to gas generation during bio-
Chemical Characteristics:
Liquid waste contains
both organic and inorganic components.
Organic Matter:
We already discussed BOD and COD
in for this, and COD providing faster results due to
chemical oxidation.
Inorganic Matter:
These include ammonia, chloride,
phosphates, and metal compounds originating from
various sources, including ...

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