A wastewater treatment plant must process average flow wastewater produced in a city of population 200000. Design criteria for surface overflow rates have been set by the municipal corporation at a maximum of 40 m/day. The primary sedimentation tank is designed to be 50 m long, 5 m wide and liquid depth of 2.5 m. If the length of the weir is 40 m then the weir loading rate (in m3/day/m) is______
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