What is the firssorder decay rate constant

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Reference no: EM131253328

You are designing a reactor that uses chlorine in a PER or CMFR to de-stroy pathogens in water. A minimum contact lime of 30 min is required to reduce the pathogen concentration from 100 pathogens L^-1 to below 1 pathogen L^-1 through a first-order decay process. You plan on treating water at a rate of LOOD gal min^-1 .

(a) What is the firssorder decay rate constant?

(b) What is the minimal size (in gallons) of the reactor required for a plug Row reactor?

(d) Which type of reactor would you select if your treatment objective stated that "no discharge an ever be greater than 1 pathogen L^-1 ?" (Explain your reasoning.)

(e) If the desired chlorine residual in the treater water after it leaves the reactor is 0.20 mg L^-1 . and the chlorine demand used during treatment is 0.15 mg L^-1 , what must be the daily mass of chlorine added to the reactor in grams?

Reference no: EM131253328

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