Q. No.The treatment of waste water is done by
(1) Heterotrophic microbes added after treatment
(2) Heterotrophic microbes added during treatment
(3) Heterotrophic microbes which are already present in the sewage
(4) Mixotrophic bacteria present in human excreta
(1) Heterotrophic microbes added after treatment
(2) Heterotrophic microbes added during treatment
(3) Heterotrophic microbes which are already present in the sewage
(4) Mixotrophic bacteria present in human excreta
Physical removal of particles in waste water treatment is carried out by
(1) Filtration
(2) Sedimentation
(3) Both A and B
(4) Digesters
Floating debris is removed by
(1) Sequential filtration
(2) Sedimentation
(3) Secondary Treatment
(4) Anaerobic digestion
Grit is composed of
(1) Soil
(2) Small pebbles
(3) Both A and B
(4) Human excreta+ soil+ small pebbles
Removal of grit is carried out by
(1) Sedimentation
(2) Filteration
(3) Primary digestion
(4) Secondary digestion
The result of sedimentation results in settled solids which is known as
(1) Effluent
(2) Primary sludge
(3) Activator
(4) Both B and C
Effluent is formed in
(1) Primary Settling tank
(2) Colony sewage
(3) Secondary Settling tank
(4) Both B and C
The Biological treatment of sewage is also known as
(1) Secondary Treatment
(2) Primary Treatment
(3) Same treatment
(4) Floc treatment
In Biological treatment, the primary effluent is passed into
(1) Large aeration tank
(2) Large anaerobic tank
(3) Small aerobic Chambers
(4) Large anaerobic Chambers
Flocs are
(1) Masses of fungal Filaments associated with bacteria
(2) Masses of bacteria associated with fungal Filaments
(3) Masses of algae associated with fungal Filaments
(4) Masses of algae and bacteria
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