The activated sludge process of sewage treatment -
(a) requires small area for construction of whole unit
(b) requires smaller water head for operation than trickling filters
(c) has higher efficiency
(d) All of these.
The correct Answer Is
(d) All of these
(a) requires small area for construction of whole unit
(b) requires smaller water head for operation than trickling filters
(c) has higher efficiency
(d) All of these.
The correct Answer Is
(d) All of these
