Wastewater-treatment plants use BOD levels to _____.
A)gauge the amount of waste present in water
B)determine fines for food-processing plants
C)decide what chemicals to use for treating the water
D)track the chemicals added to runoff water

Question

Quizplus · Accepted Answer

Wastewater treatment plants use BOD levels (biological oxygen demand) to gauge the amount of organic waste present in water. BOD measures the amount of dissolved oxygen needed by bacteria to consume the organic matter in the water. A higher BOD level indicates a larger amount of organic waste and a greater need for treatment before discharge back into the environment.

Wastewater-Treatment Plants Use BOD Levels to _____