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.)

Related MCQs

• The percentage ratio of the oxygen available in sewage to the oxygen required to satisfy one stage of bio-chemical oxygen demand (B.O.D.) is termed as
• In the freshly produced sewage, aerobic activity is maximum.
• The seqage is treated by aerobic bacteria action in
• Aerobic bacterias takes place in the
• Bio-chemical oxygen demand (B.O.D.) of safe drinking water must be
• The amount of oxygen consumed by sewage from an oxidising agent like potassium dichromate is termd as
• The minimum dissolved oxygen required in water to save the aquatic life is
• The organic impurities in water form a layer on the top of a filtering media. Such a layer is called
• In primary settling tank, suspended solids are reduced from
• Grit chambers are used to remove sand and other organic matter from sewage.