Select the correct option with regard to the activated sludge plant.
1. Activated sludge process offers secondary treatment with minimum area requirement, and effluent of high quality is one of the disadvantages.
2. The advantages of activated sludge plants are that they are easy to operate and do not require supervision.
1
Both are correct.
2
Both are incorrect.
3
Statement 1 is correct, and statement 2 is incorrect.
4
Statement 1 is incorrect, and statement 2 is correct.