What is the surface loading rate of a rectangular tank with a length of 26 ft and a width of 16 ft with an inflow of 1.3 MGD?

To determine the surface loading rate of the rectangular tank, you need to calculate the area of the tank's surface and then divide the inflow by this area.

First, calculate the area of the tank. The area (A) of a rectangular tank can be found using the formula:

A = Length × Width

For this tank:

• Length = 26 ft

• Width = 16 ft

So, the area is:

A = 26 ft × 16 ft = 416 square feet

Next, convert the inflow from million gallons per day (MGD) to gallons per day. Since 1 MGD equals 1,000,000 gallons, the inflow of 1.3 MGD converts to:

1.3 MGD = 1.3 × 1,000,000 gallons = 1,300,000 gallons per day

Now, to find the surface loading rate in gallons per square foot, you divide the inflow by the surface area:

Surface Loading Rate = Inflow / Area

= 1,300,000 gallons per day / 416 square feet

Calculating this gives:

Surface Loading Rate = 3,125 gallons per square foot per day

This calculation supports