Complete Question :
The goal of tertiary wastewater treatment is to sharply reduce the levels of ________ from the final effluent.
a. heavy metals
b. methane
c. inorganic nutrients
d. organic compounds
Answer:
Option c. inorganic nutrients
Explanation:
Waste water treatment is the removal of contaminating materials such as solid particles (which includes soil, wood, plastics), microorganisms, inorganic nutrients, organic compounds, heavy metals from the waste water before releasing or discharging it into the environment.
It is very essential that waste water undergoes treatment in a waste water treatment plant or facility so that it does not cause harm to the human health. It must also be treated before been discharged into the environment to prevent the degradation of the ecosystem.
The final water that is released into the environment after the treatment of waste water is called Effluent.
Waste water treatment processes are:
a. Primary waste water treatment: This treatment is used to remove solid particles, heavy metals from the waste water
b. Secondary waste water treatment: This treatment removes microorganisms, organic compounds from the waste water.
c. Tertiary waste water treatment: This treatment of waste water removes inorganic nutrients that are present in the waste water. Examples of these inorganic nutrients are Phosphorus and Nitrogen.
