The measurement of $BOD$ (Biochemical Oxygen Demand) in wastewater provides information about the amount of which of the following?

  • A
    Nitrates
  • B
    Phosphates
  • C
    Biodegradable organic matter
  • D
    Toxic metals

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What does primary sludge consist of?

During which process are flocs formed?

In the treatment of waste water discharge,which treatment stage involves biological treatment?

What is digested in the anaerobic sludge digester?

The $BOD$ of effluent water is:

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