Water Pollution Quiz: Energy and Environment

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What is the unit of DOi and DO?

[mg/L]

What is the formula for Dilution Factor (D)?

D = Vb/Vs

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

[days]

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

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

What is the unit of k in the BOD formula?

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

What is the unit of UBOD in the BOD formula?

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

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