Question

Which of the following is a method to control water pollution?

• A. Using water hyacinth to remove water pollutants
• B. Recycling, Renovation, Recharge and Reuse (4R concept) of waste water
• C. Both A and B
• D. None of these

Answer 1

The correct option is C Both A and B

4R concept:- The wastewater consisting of domestic sewage industrial effluents, thermal and radioactive pollutants receive some sort of treatment before mixing into water bodies. Urban sewage and sludge etc may be recycled and reused to generate cheaper fuel, gas, and electricity.

Water hyacinth is extremely efficient in absorbing and concentrating dissolved nutrients from the water in which it lives.