Water Pollution Quiz: Energy and Environment
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the unit of DOi and DO?

  • [g/L]
  • [L/mg]
  • [mg/L] (correct)
  • [L/g]

What is the formula for Dilution Factor (D)?

  • D = Vb+Vs
  • D = Vs/Vb
  • D = Vb-Vs
  • D = Vb/Vs (correct)

What is the unit of time (t) in the BOD formula?

  • [days] (correct)
  • [weeks]
  • [months]
  • [hours]

What is the formula for BODt in terms of UBOD, k, and t?

<p>BODt = UBOD * (1-e-kt) (A)</p> Signup and view all the answers

What is the unit of k in the BOD formula?

<p>[day^-1] (A)</p> Signup and view all the answers

If the BOD5 of a wastewater is 150 mg/L at 20 ℃, what would be BOD8 if the test were run at 15 ℃?

<p>175 mg/L (A)</p> Signup and view all the answers

What is the value of k in the BOD formula if BOD5 is 150 mg/L and UBOD is 200 mg/L?

<p>0.23 per day (C)</p> Signup and view all the answers

What is the purpose of the Dilution Factor (D) in BOD calculation?

<p>To convert the sample volume to standard units (C)</p> Signup and view all the answers

What is the significance of temperature in BOD calculation?

<p>It affects the value of k in the BOD formula (B)</p> Signup and view all the answers

What is the unit of UBOD in the BOD formula?

<p>[mg/L] (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser