Suppose you are to design a chlorination tank for killing microorganisms in the effluent from a wastewater treatment plant. It is necessary to achieve 99.99% kill in a wastewater flow of 100 m3/hr. Assume the disinfection is a first-order reaction with a rate constant of 0.2 min−1. A) First, calculate the tank volume if the contact tank is a CMF reactor. B) Then, calculate the tank volume if the contact tank is a plug-flow reactor. C) Last, what is the retention time of both reactors? *Please answer all parts of the question*
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