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Tests such as the COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and Permanganate Index are...

Tests such as the COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and Permanganate Index are a measure of the oxidisable content of water and a guide to the potential consumption of DO (dissolved oxygen). Suppose that effluent with a high COD or Permanganate Index of 1000 mg/L was discharged into a stream. Describe what would happen to the DO (dissolved oxygen) in this environment.

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