Biotechnology is applied in the?
-
treatment of sewage
- treatment of water
- purification of chemicals
- purification of metals
The correct answer is: A
Explanation
There are several wastewater treatment methods based on biotechnology that are used worldwide. It includes Activated Sludge, Oxidation Ponds, Tricking Filters, Bio-filters and Anaerobic treatment. All the methods are part of the biological wastewater treatment and use microbes to treat organic waste in sewage.