In a sludge tank, the gas mainly produced, is

Related MCQs

• The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is
• The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is
• Acid regression stage of sludge digestion at a temperature 21°C extends over a period of
• The sludge does not contain waste water from
• The rate of accumulation of sludge in septic tanks is recommended as
• In normal conditions, the period for sludge digestion, is
• In the activated sludge process
• pH value of sludge during alkaline regression stage, is
• Sludge banks are formed if sewage is disposed of in
• The rate of accumulation of sludge per person per year, is