Waste Water Engineering

Acid regression stage of sludge digestion at a temperature 21°C extends over a period of

  • A. 15 days
  • B. 30 days
  • C. 60 days
  • D. 90 days
Answer: Option D.

No answer description available for this question.

Leave a Reply

Your email address will not be published.

Back to top button
error: Alert: Content is protected !!