Lecture 13: Effluent Treatment

What is BOD?

• Biochemical Oxygen Demand

• Biochemical Oxygen Density

• Biological Oxygen Demand

• Biological Oxygen Density

What is COD?

• Chemical Oxidation Demand

• Chemical Oxygen Demand

• Chemical Oxygen Density

• Chemical Oxidation

  Density

What is TOC?

• Total Organic Concentration

• Total Organic Carbon

• Total Oxygen Concentration

• Total Organic Compound

BOD measures the quantity of oxygen required for oxidation of organic and inorganic matter in water

• True

• False

Test measurement of COD is faster than BOD measurement

• False

• True

Wastewater processes involves physical, chemical, and biological treatments

• False

• True

Secondary treatment involves biological and physical methods

• False

• True

Anaerobic digestion can be used for sludge conditioning and to make sludge more amenable to dewatering

• False

• True

Choose the method that belong to aerobic process

• Digestion

• Sludge blankets

• Comminutors

• Trickling filters

Choose the correct sequence of physical treatment processes for primary effluent treatment

• Screens, constant velocity channels, comminutors, sedimentation tanks

• Screens, constant velocity channels, sedimentation tanks, comminutors,

• Screens, comminutors, constant velocity channels, sedimentation tanks

• Screens, comminutors, sedimentation tanks, constant velocity channels