A FWS constructed wetland is being designed to polish grey water from a school building in Indiana.
The design parameters are: • Q = 65 m3/d, • Wetland area (A) = 0.23 hectares (2,300 m2) (including the safety factor), • Aspect ratio = 8:1 • Average water depth (d) = 0.5 m • Bed slope = 1% (0.01 m/m) Given that the Manning's resistance factor (a) for sparse vegetation is 0.487, calculate the head loss for the FWS constructed wetland. Is the head loss too great for the design to work?