Question

What happens to the polluting potential of wastewater as its Biochemical Oxygen Demand (BOD) increases?

Options

• The polluting potential drops to zero

• The polluting potential remains completely unaffected

• The polluting potential decreases significantly

• The polluting potential is greater

Answer 1

A higher BOD value indicates that a larger amount of organic matter is present in the wastewater, requiring more oxygen for decomposition. Thus, the greater the BOD of wastewater, the greater its polluting potential.