engineering recuitment TNPSC AE Civil 2024 Test series Environmental Engineering Sewage Sewage Treatment
The features of anaerobic digestion of sewage are given. Identify the incorrect one.
1
Reduces odour/flies problem
2
Reduction in volume of sludge and improving the dewatering characteristics of the sludge, makes it easy to dry
3
High operating cost
4
Reduce production of landfill greenhouse gases when otherwise these untreated sludge is disposed on landfill