For questions $19-22$

A mechanically cleaned circular clarifier is to be designed with the following characteristics:

What is the approximate diameter?

A$.45ft$

B$.60ft$

C$.70ft$

D$.90ft$

$v_0=\frac{2,800,000}{a^2}(4)$

What is the approximate depth?

A$.6ft$

$t=\frac{1}{3}$

B$.8ft$

C$.12ft$

$0,083$bog$=$

D$.15ft$

$232,400$ gallons $=$

If the initial flow rate is reduced to $1\mathrm{.}1MGD,$ what is the approximate overflow rate?

B$.230ga\frac{l}{?}$ day $-f{t}^2$

C$.250$ gal$/$day$-$ft ${?}^2$

D$.280ga\frac{l}{d}a{y}_y-f{t}^2$

$V=\frac{Q}{A}$

$\frac{?}{A}$

$u=d$

$d=7,8$