You have been asked to design a steady state treatment device similar to a continuously mixed reactor to treat toluene in an aqueous waste stream. The flow into the system is 1 m3/hr and the toluene concentration is 10 ppm. The system utilizes a particular type of bacteria that can consume toluene following a first order reaction. The rate constant is 0.1 day-1. If the reactor must treat to an effluent concentration of 1 ppm, how big should it be (Volume)?