Question $1.(50$ points$)$

Using the following information, and assuming $30$ percent BOD removal in primary

clarification, a packing depth $($D$)$ of $6\mathrm{.}1m,$ and a value for $n$ of $0\mathrm{.}50,$ determine the following

design parameters for a trickling filter treatment system at $15C.$

Sizing of the clarifiers and tower trickling filters is based on two units each.

$Q=10,000\frac{m^3}{d}$

Influent BOD to the primary clarifier $=270m\frac{g}{L}$

Effluent BOD from the trickling filter $=20m\frac{g}{L}$

Influent TSS $=240m\frac{g}{L}$

Overflow rate $($OR$)$ in the primary clarifier $=40\frac{m^3}{m^2}\frac{?}{d}$

$k$ at $15C=0\mathrm{.}157\frac{(\frac{L}{s}{)}^{0\mathrm{.}5}}{m^2}$

$1\mathrm{.}1)$ Diameter $($m$)$ of each primary clarifier $(10$ points$)$

$1\mathrm{.}2)$ Reactor volume $(m^3)$ and diameter $(m)$ of each trickling filter $(20$ points$)$