A dual media denitrification filter is being considered for the effluent from the oxidat...

A dual media denitrification filter is being considered for the effluent from the oxidation ditch being built for the city of Brooklyn (Problem 16-33, Chapter 16). Using the data from Brooklyn and a permit requirement that NO₃ -N not exceed 2.0 mg/L, determine the following:

a. Filter media volume

b. Filter hydraulic loading

c. Number of filters and their nominal dimensions

d. Methanol dose in mg/L and kg/d

Assume a typical NO₃-N loading rate for the sustained minimum temperature and

assume that the filters will be sized using the guidance in Chapter 8.

Problem 16-33

Estimate the volume of an extended-aeration oxidation ditch for carbonaceous BOD oxidation and nitrification for the city of Brooklyn using the following design data:

Assume the MLSS = 3,000 mg/L, MLVSS = (0.75) MLSS, and typical kinetic coefficients in Tables 16-14 and 16-5 apply.

Tables 16-14 and 16-5