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A water treatment plant is processing water at s flow rate of 0.26m^3/s. The hydraulic detention times for the rapid mix tank, flocculation basin and the rectangular sedimentation basin are 10 sec, 30 min, 60 min, respectively. The velocity gradients for the rapid mix and the flocculation tanks are 1000s^-1 and 60:40:20s^-1, respectively. The dynamic viscosity of water is 0.001 Pa-s and the motor efficiency is 80%. Use two parallel treatment trains.
a)- Determine the size and power requirements for rapid mixb)- Determine the size and power requirements for flocculation basin stagesc)- Determine the size of sedimentation basin and the overflow rate for a water depth of 4 md)- What is the percent removal of two particles with settling velocity of 0.001 and 0.002 m/s in the sedimentation basin is the basin is (i) a rectangular tank and (ii) an up flow clarifier?
A river upstream of a brdige corssing is 3 meters deep and has an average velocity of 3 m/s. The bridge piers cause a constriction in the width of the flow by 12%.
The grade of the highway, Suppose that a highway rises a distance of 269 feet in a horizontal distance of 2647 feet.
THE 2.5 MG VAN IS TRAVELLING WITH A SPEED OF 100KM/H WHEN THE BRAKES ARE APPLIED AND ALL 4 WHEELS LOCK. IF THE SPEED DECREASES TO 40KM/H IN 5S.
The material is brought from a borrow site that has yt=19.5 kn/M63 with w=16.5% and Gs=2.70 How much of the borrow material (in cubic meters) is required to fill the site How heavy is it
Assume that the cord used in a bungee jump behaves like a linear spring when it is stretched with a spring constant of 80 lb/ft. A 180 lb student is going for a bungee jump off the Canyon Creek bridge in Washington state.
A sedimentation basin is used to remove suspended solids from a wastewater. The rate of flow of wastewater into the tank is 10 L/s, and the influent concentration of suspended solids is 200 mg/L.
A vertical curve is formed when a rural highway passes under a bridge joining a -8% grade to the horizontal grade satisfying the requirement for safe speed of 90 Km/hr . Determine the minimum clearance required betewen the highway pavement surface..
Helium enters an adiabatic steady-state nozzle at 200kPa and 124 degrees Celsius and 10m/s. At the nozzle exit the temperature of the helium is 100 degrees Celsius and the pressure = 150 kPa.
If a student mixes 500 ml of a solution containing 50 mg/l of CaCl2 with 500 ml of containing 50 mg/l of NaHco3 what will be the hardness and alkalinity of the mixture of mg/l as CaCo3
What criteria are used in the selection of personnel for the demonstration of maintenance tasks? Define the criteria for the selection of test and support equipment.
The flow rate of the treatment plant is 2,000 m3/d. a. Calculate the mass of sodium bicarbonate (NaHCO3) that would be required per day to replace the alkalinity consumed.
calculate the moment of inertia for the Milkyway. Assume it to be a disk.
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