How large must the storage tank be if it acts a completely

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Radon from well water may pose a radiological health hazard. One treatment technique is simply to hod the water in storage, allowing the radon to decay. The decay rate is first order:

Rn---> Products ; k= 0.2day^-1

Consider a situation in which water is delivered from a well to a household at a rate of 1m^3/day . The radon concentration is to be reduced by storage to 7 percent of its level in the untreated supply.

a. How large must the storage tank be if it acts a plug-flow reactor?

b. How large must the storage tank be if it acts a completely mixed flow reactor?

c. If the storage tank system consists of two identical CMFRs in series, how large must each be to achieve the desired level of control?

Reference no: EM13546869

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