A new municipal wastewater treatment plant plans to have an average flow rate of 5.3 MGD and a peak daily flow rate of 13.2 MGD. Primary sedimentation tanks are planned prior to secondary treatment processes.
Design a system with two primary sedimentation basins in parallel that each has a channel width of 20 ft. Assume an average overflow rate d of 1,000 gal/ft². Specify the required surface area, A (ft²), and tank length, L (ft) of each basin. Assuming a sidewater depth of 13 ft, calculate the total tank volume (ft2).

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.