In primary settling tank, suspended solids are reduced from

Related MCQs

• The self cleaning velocity, recommended for Indian conditions, in order to prevent settling down of seqage at the bottom or on the sides of a large sewer is
• The volume of a settling basin is large due to
• The rate of settling of a particle in water depends upon the
• The amount of oxygen required for the biological decomposition of dissovled organic solids to occur under aerobic conditions is called bio-chemical oxygen demand (B.O.D.)
• Suspended impurities cause turbidity in water.
• Suspended impurities consist of
• Plain sedimentation is a process of retaining water in a basin so that the suspended particles settles down as a result of the
• Suspended impurities include
• Air vent pipe is not essentially required in a septic tank.
• The length of rectangular sedimentation tank should not be more than