A sample of sewage water has 4-day 20°C BOD value of 60% of the final. Find the rate constant per day.
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For example: 1.0 mL of a full strength wastewater sample added to 9.0 mL of DI water results in a 0.1 dilution of the wastewater. The DO concentration (mg/L) reduction must then be multiplied by 10 to determine the final BOD concentration.
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