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Q3 The BOD5 of a municipal wastewater is 200 mg/L at 20°C. The amount of organic matter remaining in the sample after 5 d is equivalent to 151.93 mg/L of O2. Calculate the BODs of the sample at 30°C. Use 0 = 1.047 as the Arrhenius coefficient for BOD rate constant. [20 marks]

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