Wastewater containing 8 mg/L O_2 (atomic mass O=16), 1.00 Times 10^-3M NO_3^-, a
ID: 938626 • Letter: W
Question
Wastewater containing 8 mg/L O_2 (atomic mass O=16), 1.00 Times 10^-3M NO_3^-, and 1.00 Times 10^-2 M soluble organic matter, {CH_2O}, is stored isolated from the atmosphere in a container richly seeded with a variety of bacteria. Assume that denitrification is one of the processes that will occur during storage. After the bacteria have had a chance to do their work, which of the following statements will be true? No {CH_2O} will remain, some O_2 will remain, some NO_3^- will remain, denitrification will have consumed more of the organic matter than oxic respiration, the composition of the water will remain unchanged.Explanation / Answer
a) CH2O is the a carbon source and should be consumed in the process of denitrification.
b) O2 must be removed because denitrification requires anoxic conditions.
c) Denitrification process removes efficiently all nitrogen and NO3- is totally removed.
d) denitrification requires anoxic conditions.
e) The composition of the water will change because this process removes all nitrogen.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.