wrd-ot-clarifier-calculations_445211_7 - Clarifier...

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Clarifier Calculations Prepared By Michigan Department of Environmental Quality Operator Training and Certification Unit
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Clarifier Calculations Hydraulic Loading Solids Loading
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Clarifier Loading Calculations = Tank Volume, MG X 24 Flow into Tank, MGD Detention Time (DT) = Flow, gallons/day Surface Area, ft 2 Surface Overflow Rate (SOR) Weir Overflow Rate (WOR) = Flow, gallons/day Length of Weir, ft Solids Loading = Solids, lbs/day Surface Area, ft 2
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But First But First
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Area and Volume Calculations
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Surface Area Calculations Surface Area Calculations Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Example 1: If a tank is 10 ft long and 5 ft wide , what is the surface area ? SA, ft 2 = 10 ft X 5 ft = 50 ft 2
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Example 2: If a tank is 10 ft 6 inches long and 5 ft 9 inches wide, what is the surface area in sq. ft. ? NOT SA, ft 2 = 10.6 ft X 5.9 ft Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Surface Area Calculations Surface Area Calculations Surface Area Calculations Surface Area Calculations
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6 inches = 6 inches 12 in/ft = 0.5 ft Converting Inches to Feet Converting Inches to Feet So: So: 10 ft 6 inches = 10.5 ft 10 ft 6 inches = 10.5 ft 9 inches = 9 inches 12 in/ft = 0.75 ft So: So: 5 ft 9 inches = 5.75 ft 5 ft 9 inches = 5.75 ft
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Example 2: If a tank is 10 ft 6 inches long and 5 ft 9 inches wide, what is the surface area in sq. ft. ? Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Surface Area Calculations Surface Area Calculations Surface Area Calculations Surface Area Calculations SA, ft 2 = 10.5 ft X 5.75 ft = 60.4 ft 2
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Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Surface Area Calculations Surface Area Calculations Surface Area Calculations Surface Area Calculations Work Calculations on Separate Paper Answers Given on Next Slides Practice 1: If a clarifier is 25 ft long and 9 ft wide, what is the surface area in sq. ft. ? Practice 2: If a clarifier is 22 ft 3 inches long and 7 ft 7 inches wide, what is the surface area in sq. ft. ?
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Practice 1: If a clarifier is 25 ft long and 9 ft wide, what is the surface area in sq. ft. ? Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Surface Area Calculations Surface Area Calculations Surface Area Calculations Surface Area Calculations SA, ft 2 = 25 ft X 9 ft = 225 ft 2
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Practice 2: If a clarifier is 22 ft 3 inches long and 7 ft 7 inches wide, what is the surface area in sq. ft. ? Rectangles Surface Area, ft Surface Area, ft 2 = Length, ft X Width, ft = Length, ft X Width, ft Surface Area Calculations Surface Area Calculations Surface Area Calculations Surface Area Calculations
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3 inches = 3 inches 12 in/ft = 0.25 ft Converting Inches to Feet Converting Inches to Feet So: So: 22 ft 6 inches = 22.25 ft 22 ft 6 inches = 22.25 ft 7 inches = 7 inches 12 in/ft = 0.58 ft So: So: 7 ft 7 inches = 7.58 ft 7 ft 7 inches = 7.58 ft
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Practice 2: If a clarifier is 22 ft 3 inches long and 7 ft 7 inches wide, what is the surface area in sq.
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