List of top Environmental Science Questions on Wastewater management

Arrange the following steps involved in the sewage treatment in correct order from initial to the last.
A. Coagulation and Flocculation
B. Chemical disinfection
C. Screening
D. Distribution of treated water
E. Sediment and filtration
Choose the correct answer from the options given below:

Decentralised Waste Water Treatment (DEWAT) system has\(\underline{\hspace{2cm}}\).
(A) Low primary investment.
(B) Easy to operate and maintenance.
(C) Baffled filter reactor filled with stone for filtration.
(D) First three chambers for sedimentation of sludge.
Choose the correct answer from the options given below: