Description: There are 19,500 inhabitants living in a municipality. The wastewater generated is conveyed through a combined sewer. A reach of this combined sewer located in a short distance upstream of the sewage treatment plant is rehabilitated with following features:
Circular profile: DN 1,000
Length: 800 m
Height difference: 10 m
The screw pump lifting station at the treatment plant has a dry weather inflow of 48 l/s.
What is the flow in m3/s in this new reach, when the flow velocity is 1.7 m/s?
