Related Questions

Fine grit present in sewage is removed in the __________ during sewage treatment.
A Grit chamber
B Detritus tank
C Trickling filter
D Skimming tank
In a grit chamber of a sewage treatment plant,
A Flow velocity 0.15 m to 0.3 m/sec is kept
B Depth of 0.9 m to 1.20 m is kept
C One minute of detention period is kept
D All the above
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
A Filtration
B Digestion
C Sedimentation
D Both B and C
The grit chambers of sewage treatment plants, are generally cleaned after
A 2 days
B 7 days
C 12 days
D 14 days
The function of skimming tank in sewage treatment is to remove __________ substances.
A Dissolved solid
B Suspended solid
C Oil & fatty
D Gritty & inorganic
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is
A H2
B CH4
C CO2
D N2
Radioactive substances present in the polluted water stream can be removed by
A Biological oxygen treatment
B Coagulation and filtration
C Adsorption in ion exchange materials
D None of these
The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria.
A Anaerobic
B Saphrophytic
C Aerobic
D Parasitic
A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
A Dry dock
B Wet dock
C Floating dock
D Refuge dock
Those substances which have so far not been resolved by any means into other substances of simpler form are called
A Atoms
B Compounds
C Elements
D Molecules

Next steps