Dusty air at a fertilizer plant flows through a 70%-efficient cyclone and then through an ESP. The inlet air to the cyclone has a dust loading of 50 grains/cubic foot. The outlet air from the ESP actually contains dust at 0.50 grains/cubic foot. Calculate the efficiency of the ESP.

What diameter would a circular clarifier have to be to remove 50 μm particles with 75% efficiency from a 4 MGD (million gallon per day) flow?  Assume the particle specific gravity is 1.5 and the temperature is 10°C.  Answer: 18 m

CHAPTER 5 Q7. Determine the lime storage volume required for the following conditions: Average water demand = 0.18 m3/s Maximum dosage = 200 mg/L as CaO Shipping time = 1 week Lime is an interruptible chemical Assume the bulk density and purity of lime is the average of the values given in Table 7..

A certain jet fuel has a kinematic viscosity of 1.2 x 10-6 m2/s. If the fuel is being delivered to the engine at 200 L/min through a steel tube (Diameter = 22.10 mm), compute the Reynold number and identify the type of flow either laminar or turbulent?