Machine-translated by Google. Questions are authored in English.
Top

Discussion

Sewage treatment is undertaken principally to

  • A.protect public health and the receiving water
  • B.recover the drinking water contained in the sewage
  • C.produce fertiliser for sale to local agriculture
  • D.generate electricity from the incoming flow

Answer: A

Correct answer: protect public health and the receiving water

Everything else is secondary. Treatment exists to prevent disease transmission and to stop the receiving water being deoxygenated by the organic load. Gas, fertiliser and reclaimed water are useful by-products, and none of them would justify the works on its own.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.