Question

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third stage in the water treatment process is a physical process biological process chemical process none of these​​

Answer 1

Answer:

Chemical process, because it requires chemical disinfectant

Answer 2

Step-by-step explanation:

There are three main stages of the wastewater treatment process, aptly known as primary, secondary and tertiary water treatment.

Tertiary water treatment is the final stage of the multi-stage wastewater cleaning process. This third stage of treatment removes inorganic compounds, bacteria, viruses, and parasites. Removing these harmful substances makes the treated water safe to reuse, recycle, or release into the environment