WAEC - Chemistry (2019 - No. 38)
Biotechnology is applied in the?
treatment of sewage
treatment of water
purification of chemicals
purification of metals
解释
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.