Sludge Treatment Process MCQ

Test your knowledge with important Sludge Treatment Process MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Sludge Treatment Process MCQs on Bissoy. Bissoy App

• Which of the following methods is used for stabilization of the sludge?
  ক

  Anaerobic digestion

  খ

  Sludge drying bed

  গ

  Centrifuge

  ঘ

  Filter press
• To remove 3% primary sludge which of the following size of mesh of a cyclone gritter is used?
  ক

  100

  খ

  150

  গ

  65

  ঘ

  28-35
• To remove 2% primary sludge which of the following size of mesh of a cyclone gritter is used?
  ক

  150

  খ

  100

  গ

  65

  ঘ

  28-35
• To remove 1% primary sludge which of the following size of mesh of a cyclone gritter is used?
  ক

  150

  খ

  100

  গ

  300

  ঘ

  50
• Secondary sludge constitutes which of the following?
  ক

  Chemical sludge

  খ

  Settlable solids

  গ

  Biological solids

  ঘ

  Biological and settlable solids
• Primary sludge constitutes which of the following?
  ক

  Chemical sludge

  খ

  Settlable solids

  গ

  Biological solids

  ঘ

  Biological and settlable solids
• The cyclone gritter removes the grit particles based on which of the below mentioned phenomenon?
  ক

  Centrifugal force

  খ

  Gravity

  গ

  Brownian motion

  ঘ

  Sedimentation
• The usage of which type of pump results in less wear and tear while pumping the sludge?
  ক

  Vertical turbine pumps

  খ

  Submersible pump

  গ

  Progressive cavity pump

  ঘ

  Non-clog pump
• Out of the following methods which provide uniform dewatering?
  ক

  Belt filter press

  খ

  Filter press

  গ

  Sludge bed

  ঘ

  Centrifuge
• What is the percentage of thickness that the sludge should have to undergo additional treatment?
  ক

  Greater than 10

  খ

  Less than 10

  গ

  Equal to 10

  ঘ

  0.1
• What is the percentage of thickness that can be achieved for secondary sludge?
  ক

  1 %

  খ

  2 %

  গ

  3 %

  ঘ

  4 %
• What is the percentage of thickness that can be achieved for primary sludge?
  ক

  2-3 %

  খ

  4-5 %

  গ

  6-8 %

  ঘ

  8-10 %
• Which is the first step in the sludge treatment process?
  ক

  Thickening

  খ

  Dewatering

  গ

  Digestion

  ঘ

  Phosphorus recovery
• Reducing the sludge volume increases _______
  ক

  pH

  খ

  temperature

  গ

  concentration

  ঘ

  water
• Toxic chemicals are removed from liquid sewage by _______
  ক

  Adsorption

  খ

  Absorption

  গ

  Desorption

  ঘ

  Sorption
• Energy may be recovered from sludge as ________
  ক

  Hydrogen gad

  খ

  Methane gas

  গ

  Air

  ঘ

  Liquid petroleum gas
• Which of the following methods are not used for pathogen destruction?
  ক

  Composting

  খ

  Incineration

  গ

  Mechanical stirring

  ঘ

  Thermophilic digestion
• How are the pathogens destroyed?
  ক

  Mechanical means

  খ

  Thermophilic conditions

  গ

  Chemical treatment

  ঘ

  Aeration
• Solids removal can reduce sludge volume.
  ক

  True

  খ

  False
• Sludge treatment aims at reducing sludge weight and volume.
  ক

  True

  খ

  False