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ABC Formula/Conversion Table for Wastewater Treatment ...

ABC Formula/Conversion Table for Wastewater Treatment , Industrial, Collection and Laboratory Exams (Titrant Volume, mL) (Acid Normality) (50,000). Alkalinity, as mg CaCO3/L =. Sample Volume, mL. Volts Amps =. Ohms Area of Circle = ( ) (Diameter2) or ( ) (Radius2). Area of Cone (lateral area) = ( ) (Radius) Radius 2 + Height 2. Area of Cone (total surface area) = ( ) (Radius) (Radius + Radius 2 + Height 2 ). Area of Cylinder (total outside surface area) = [Surface Area of End #1] + [Surface Area of End #2] +. [( ) (Diameter) (Height or Depth)]. Area of Rectangle = (Length) (Width). (Base) (Height). Area of a Right Triangle =.

RBC rotating biological contactor SDI sludge density index SRT solids retention time SS settleable solids SSV30 settled sludge volume 30 minute SVI sludge volume index TOC total organic carbon TS total solids TSS total suspended solids VS volatile solids WAS waste activated sludge .

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Transcription of ABC Formula/Conversion Table for Wastewater Treatment ...

1 ABC Formula/Conversion Table for Wastewater Treatment , Industrial, Collection and Laboratory Exams (Titrant Volume, mL) (Acid Normality) (50,000). Alkalinity, as mg CaCO3/L =. Sample Volume, mL. Volts Amps =. Ohms Area of Circle = ( ) (Diameter2) or ( ) (Radius2). Area of Cone (lateral area) = ( ) (Radius) Radius 2 + Height 2. Area of Cone (total surface area) = ( ) (Radius) (Radius + Radius 2 + Height 2 ). Area of Cylinder (total outside surface area) = [Surface Area of End #1] + [Surface Area of End #2] +. [( ) (Diameter) (Height or Depth)]. Area of Rectangle = (Length) (Width). (Base) (Height). Area of a Right Triangle =.

2 2. Sum of All Terms Average (arithmetic mean) =. Number of Terms 1/n Average (geometric mean) = [(X1) (X2) (X3) (X4) (Xn)] The nth root of the product of n numbers Biochemical Oxygen Demand (unseeded), in mg/L = (Initial DO, mg/L) (Final DO, mg/L). Sample Volume, mL. Final Diluted Volume, mL. (Desired Flow) (100%). Chemical Feed Pump Setting, % Stroke =. Maximum Flow (Flow, MGD) (Dose, mg/L) ( L/gal) (1,000,000 gal/MG). Chemical Feed Pump Setting, mL/min =. (Liquid, mg/mL) (24 hr/day) (60 min/hr). Circumference of Circle = ( ) (Diameter). (Instantaneous Flow) (Total Sample Volume). Composite Sample Single Portion =. (Number of Portions) (Average Flow).

3 Storage Volume, gal Cycle Time, min. =. Pump Capacity, gpm - Wet Well Inflow, gpm Degrees Celsius = (Degrees Fahrenheit - 32) (5/9) or ( F 32). o Degrees Fahrenheit = [(Degrees Celsius) (9/5) + 32] or [(Degrees Celsius) ( ) + 32]. Volume Detention Time = Note: Units must be compatible. Flow Effective February 10, 2009. Electromotive Force ( ), volts = (Current, amps) (Resistance, ohms) or E =IR. (Dosage, mg/L) (Capacity,MGD) ( lbs/gal). Feed Rate, lbs/day =. (Purity, decimal percentage). Flow, gpm Filter Backwash Rate, gpm/sq ft =. Filter Area, sq ft Filter Backwash Rise Rate, in/minute =(Backwash Rate, GPM/sq ft) (12 in/ft).

4 ( gal/cu ft). (Solids Loading, lbs/day) (Recovery, % / 100%). Filter Yield, lbs/hr/sq ft =. (Filter Operation, hr/day) (Area, sq ft). Flow Rate, cfs = (Area, sq ft) (Velocity, ft/sec) or Q = AV where: Q = flow rate, A = area, V= velocity BOD 5 , lbs/day Food/Microorganism Ratio =. MLVSS, lbs Force, pounds = (Pressure, psi) (Area, sq in). Volume of Wastewater Produced, gpd Gallons/Capita/Day =. Population (Titrant Volume, mL) (1,000). Hardness, as mg CaCO3/L = Only when the titration factor is of EDTA. Sample Volume, mL. (Flow, gpm) (Head, ft). Horsepower, Brake (bhp) =. (3,960) (Decimal Pump Efficiency). (Flow, gpm) (Head, ft).

5 Horsepower, Motor (mhp) =. (3,960) (Decimal Pump Efficiency) (Decimal Motor Efficiency). (Flow, gpm) (Head, ft). Horsepower, Water (whp) =. 3,960. Total Flow Applied, gpd Hydraulic Loading Rate, gpd/sq ft =. Area, sq ft Volume, gallons Leakage, gpd =. Time, days Mass, lbs = (Volume, MG) (Concentration, mg/L) ( lbs/gal). Mass Flux, lbs/day = (Flow, MGD) (Concentration, mg/L) ( lbs/gal). Mean Cell Residence Time (MCRT) Aeration Tank TSS, lbs + Clarifier TSS, lbs =. or Solids Retention Time (SRT), days TSS Wasted, lbs/day + Effluent TSS, lb/day Moles of Solute Molarity =. Liters of Solution Effective February 10, 2009. Number of Equivalent Weights of Solute Normality =.

6 Liters of Solution Total Weight Number of Equivalent Weights =. Equivalent Weight Total Weight Number of Moles =. Molecular Weight Organic Load, lbs BOD 5 /day Organic Loading Rate =. Volume Organic Load, lbs BOD 5 /day Organic Loading Rate-RBC, lbs BOD5/day/1,000 sq ft =. Surface Area of Media, 1,000 sq ft Organic Load, lbs BOD 5 /day Organic Loading Rate-Trickling Filter, lbs BOD5/day/1,000 cu ft =. Volume, 1,000 cu ft Oxygen Usage, mg/L. Oxygen Uptake Rate/Oxygen Consumption Rate, mg/L/minute =. Time, minute (Flow, MGD) (BOD, mg/L) ( lbs/gal). Population Equivalent, Organic =. lbs BOD/day/person Recirculated Flow Recirculation Ratio-Trickling Filter =.

7 Primary Effluent Flow (Original Flow - Reduced Flow) (100%). Reduction in Flow, % =. Original Flow (In - Out)(100%). Reduction of Volatile Solids, % = All information (In and Out) must be in decimal form In (In Out ). (In Out) (100). Removal, % =. In (Return Flow Rate) (100%). Return Rate, % =. Influent Flow Rate (MLSS) (Flow Rate). Return Sludge Rate-Solids Balance =. Return Activated Sludge Suspended Solids MLSS. Drop or Rise Slope, % = x 100. Distance 100. Sludge Density Index =. SVI. Effective February 10, 2009. (SSV30 , mL/L) (1,000 mg/g). Sludge Volume Index, mL/g =. MLSS, mg/L. (Dry Solids, grams) (1,000,000). Solids, mg/L =.

8 Sample Volume, mL. Weight, mg Solids Concentration, mg/L =. Volume, L. Solids Applied, lbs/day Solids Loading Rate, lbs/day/sq ft =. Surface Area, sq ft Solids Retention Time (SRT): see Mean Cell Residence Time (MCRT). Specific Weight of Substance, lbs/gal Specific Gravity =. Specific Weight of Water, lbs/gal OUR, mg/L/min (60 min). Specific Oxygen Uptake Rate/Respiration Rate, (mg/g)/hr =. MLVSS, g/L (1 hr). Flow, gpd Surface Loading Rate or Surface Overflow Rate, gpd/sq ft =. Area, sq ft Three Normal Equation = (N1 x V1) + (N2 x V2) = (N3 x V3), where V1 + V2 = V3. Two Normal Equation = N1 x V1 = N2 x V2, where N = concentration (normality), V = volume or flow Flow Rate, cu ft / sec Distance, ft Velocity, ft/second = or Area, sq ft Time, second (Dry Solids, g Fixed Solids, g) (100).

9 Volatile Solids, % =. Dry Solids, g Volume of Cone = (1/3) ( ) (Diameter2) (Height). Volume of Cylinder = ( ) (Diameter2) (Height). Volume of Rectangular Tank = (Length) (Width) (Height). Waste Milliequivalent = (mL) (Normality). Watts (DC circuit) = (Volts) (Amps). Watts (AC circuit) = (Volts) (Amps) (Power Factor). Flow, gpd Weir Overflow Rate, gpd/ft =. Weir Length, ft Water Horsepower, HP. Wire-to-Water Efficiency, % = x 100. Power Input, HP or Motor HP. (Flow, gpm) (Total Dynamic Head, ft) ( kw/hp) (100). Wire-to-Water Efficiency, % =. (3,960) (Electrical Demand, kilowatts). Effective February 10, 2009. Conversion Factors: 1 acre = 43,560 square feet 1 horsepower = kW or 746 watts or 33,000 ft.

10 1 acre foot = 326,000 gallons 1 million gallons per day = 694 gallons per minute 1 cubic foot = gallons 1 million gallons per day = cubic feet per second 1 cubic foot = pounds 1 mile = 5,280 feet 1 cubic foot per second = MGD 1 pound = kilograms 1 foot = meters 1 pound per square inch = feet of water 1 foot of water = psi 1 ton = 2,000 pounds 1 gallon = liters 1% = 10,000 mg/L. 1 gallon = pounds or pi = 1 grain per gallon = mg/L. Population Equivalent, hydraulic = 100 gallons/person/day Population Equivalent = lbs BOD/person/day Abbreviations: BOD biochemical oxygen demand CBOD carbonaceous biochemical oxygen demand cfs cubic feet per second COD chemical oxygen demand DO dissolved oxygen ft feet F/M ratio food to microorganism ratio g grams gpd gallons per day gpg grains per gallon gpm gallons per minute in inches kW kilowatt lbs pounds mg/L milligrams per liter MCRT mean cell residence time MGD million gallons per day mL milliliter MLSS mixed liquor suspended solids MLVSS mixed liquor volatile suspended solid OCR oxygen consumption rate ORP oxygen reduction potential OUR oxygen uptake rate ppb parts per billion ppm parts per million psi pounds per square


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