Biotechnology is applied in the?
treatment of sewage
treatment of water
purification of chemicals
purification of metals
Correct answer is A
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.