# A what is the minimum required width of the basin

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a. What is the minimum required width of the basin?

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EVEG 3110 Name: __________________ Date: _______ b. What would be the minimum required width if the water in this problem was 25°C, instead of 15°C? c. If you designed the system for 15°C (as in part a) and then the plant received 30°C water, what percent of particles would be removed by the system, assuming no change to the particles themselves?
EVEG 3110 Name: __________________ Date: _______ 6. Horizontal shaft paddle wheels are used in a tapered flocculation basin comprised of three compartments. The power input to the paddles progressively decreases through the basin with the first compartment paddle driving with 156 W of power, the second compartment paddle with 20.0 W of power, and the final compartment paddle with 4.50 W of power. Each paddle wheel mixes a compartment 4.17 m deep, 4.17 m wide, and 4.17 m long. The normal water temperature is 15 °C, and the average flow rate is 16,000 m 3 /d. a. What is the mixing intensity in each of the three compartments? - Compartment 1: ______ - Compartment 2: ______ - Compartment 3: ______ b. If the influent water contains a nearly monodisperse (single-sized) particle size distribution of 20.0 μ m particles with a concentration of 1.8 ×10 5 particles/mL, what will be the average number of single particles in an aggregate leaving the first compartment?
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• Spring '10
• Malone
• C. Water, Particle size distribution

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