Q160 / 160 · JIPMER 2009 · Zoology

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

  • A
    Primary treatment
  • Correct answer
    B
    Secondary treatment
  • C
    Tertiary treatment
  • D
    Reverse osmosis stage

Solution

During waste water treatment : (a) Primary treatment involves physical process of removing the suspended matters. (b) Secondary treatment involves biological treatment. (c) Tertiary treatment involves the removal of phosphate, nitrate and sulphate.

Hence, the correct answer is option: 'B'.

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