Question

How does the precipitation process work to control water pollution?

Precipitation is a useful method to remove_______________.
1. heavy metals
2.light pollutants
3. all metals

Pollutants that have become insoluble solids after chemical precipitation are removed by___________________.
1. biological action
2.filtration
3. air sparging​

Answer 1

heavy metals, filtration

Step-by-step explanation:

Answer 2

First: 1- Heavy Metals

Second: 2- Filtration

Step-by-step explanation:

In the case of polluted water treatment, the removal of heavy metals can be done by various processes, one of which is chemical precipitation. Precipitation is a process in which a solid forms during the chemical reaction, this solid formed is called a precipitate. Interestingly, the method by which the precipitate is removed, is the filtration process that answers the second item of the question.