abc wastewater fc table 6 2009

7/21/2019 ABC Wastewater FC Table 6 2009

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Formula/Conversion Table for Wastewater Treatment and Wastewater Collection Ex

Alkalinity, as mg CaCO3/L mLVolume,Sample

(50,000) Normality)(Acid mL)Volume,(Titrant ××

Amps Ohms

ameter

Volts

Area of Circle 0.785 Di OR Radius

( )Area of Cone lateral area ( ) 22 HeightRadiusRadius +××π

Area of Cone total surface area ( ) ( ) ( 22 HeightRadiusRadiusRadius ++××π

rea of End #1 Surface Area of End #2 Diameter Height or Depth Area of Cylinder Surface Atotal outside surface area

h × WidthArea of Rectangle Lengt

Area of a Right Triangle 2

(Height) (Base) ×

Average arithmetic mean Termsof Number

f n numbers.

TermsAllof Sum

Average geometric mean / The n th root of the product o

Biochemical Oxygen Demand unseeded, mg/L ,/ ,/ ,

,

Chemical Feed Pump Setting, % Stroke FlowMaximum

(100%) Flow)(Desired ×

( )Chemical Feed Pump Setting, mL/min ( ) ( ) ( )( ) ( ) ( )hr min60dayhr 24mLmgLiquid,

MGgal1,000,000,galL3.785LmgDose,MGDFlow, ××

×××

Circumference of Circle ( ) ( )Diameter ×π

Composite Sample Single Portion FlowAveragePortionsof Number

VolumeSampleTotalFlowousInstantane

×

×

Cycle Time, min. gpmInflow,Wet Well-gpmCapacity,Pump

Degrees, Celsius Degrees,Fahrenheit 32

galVolume,Storage

Revised 6/2009

OR .

Degrees, Fahrenheit Degrees,Celsius 32 OR 1.8 32

Detention Time Flow

Note: Units must be compatib .

lectromotive Force E.M.F or E, volts Current, amps

leVolume

E Resistance, ohms OR E IR×



WWT/WWC Formula/Conversion Table

Revised 6/2009

Feed Rate, lbs/day ) percentagedecimal(Purity,

lbs/gal)(8.34 MGD)(Capacity, mg/L)(Dosage, ××

Filter Backwash Rate, gpm/sq ft ftsq Area,Filter

Filter Backwash Rise Rate, in/minute , ⁄ ⁄

. ⁄

gpmFlow,

Filter Yield, lbs/hr/sq ft ft)sq (Area, hr/day)Operation,(Filter ×

Flow Rate, cfs Area, sq ft Velocity, ft/sec or Q AV Where: Q flow rate, A area, V velocity

100%)/%(Recovery, lbs/day)Loading,(Solids ×

×

Food/Microorganism Ratio lbsLVSS,

ure, psi × Area, sq in

M

lbs/day,5

BOD

Force, pounds Press

Gallons/Capita/Day Population

gpd Produced,rWastewateof Volume

Hardness, as mg CaCO3/L Sampleof mL

(1,000) mL)Volume,(Titrant × Only when the titration factor is 1.00 of EDTA.

Horsepower, Brake bhp )EfficiencyPump(Decimal (3,960)

ft)(Head, gpm)(Flow,

×

×

Horsepower, Motor mhp )EfficiencyMotor(Decimal )EfficiencyPump(Decimal (3,960)

ft)(Head, gpm)(Flow,

××

×

Horsepower, Water whp 3,960

ft)(Head, gpm)(Flow, ×

Hydraulic Loading Rate, gpd/sq ft ftsq Area,

gpd Applied,FlowTotal

Leakage, gpd gallonsVolume,

daysTime,

Mass, lbs Volume, MG×

Concentration, mg/L×

8.34 l s/gal×

bMass Flux, lbs/day Flow, MGD Concentration, mg/L × 8.34 lbs/ga

ean Cell Residence Time MCRT or Solids Retention Time SRT, days

l

lb/TSS,Effluentlbs/dayWasted,SSTotal

lbTSS,ClarifierlbsTSS,TankAeration

+

+M

MCRT or SRT, days ,,/ , ,/ , ,/




Revised 6/2009

Molarity Soluteof L

Normality

iters

Solutof Moles e

Soluteof WeightsEquivalentof Number

So olutionf Liters

Number of Equivalent Weights WeightEquivalent

WeightTotal

Number of Moles WeightMolecular

WeightTotal

Organic Loading Rate Volume

/day5

BODlbsLoad,Organic

( ) ( )

Volume

gal/lbs34.8MGD,Flowmg/L,5

BOD ××

Organic Loading Rate –RBC, lbs/BOD5/day/1,000 sq ft ftsq 1,000Media,of AreaSurface

/day5

BODlbsLoad,Organic

Organic Loading Rate –Trickling Filter, lbs/BOD5/day/1,000 cu ft ftcu1,000,Volume

/day5BODlbsLoad,Organic

Organic Loading Rate – Pond( ) ( )

acresArea,

gal/lbs34.8MGD,Flowmg/L,5

BOD ××

Oxygen Uptake/Consumption Rate minTime,

mg/Lge,Oxygen Usa

Population Equivalent, Organic rsonBOD/day/pelbs

lbs/gal)(8.34 mg/L)(BOD, MGD)(Flow, ××

Recirculation Ratio‐Trickling Filter FlowEffluentPrimary

Flowed Recirculat

Reduction in Flow, % FlowOriginal

(100%) Flow)Reduced -Flow(Original ×

Reduction of Volatile Solids, % ( )OutInIn

(100%) Out)-(In

×−

× All information In and Out must be in decimal form.

Removal, % In

(100%) Out)(In ×−

Return Rate, % Rate

FlowInfluent

Return Sludge Rate‐Solids Balance

(100%) Rate)Flow(Return ×

MLSSSolidsSuspended SludgeActivated Return

Rate)(Flow (MLSS)

−

×

Slope, % Distance

RiseorDrop× 100%




Sludge Age, days lbs/daySolids,EffluentPrimary

lbsSolids,LiquorMixed OR lbs/dayAdded,Solids

lbsAeration,UnderSolids

Revised 6/2009

Sludge Density Index SVI

Sludge Volume Index, ml/g

100

mg/LMLSS,

mg/g)(1,000 mL/L),(SSV 30 ×

Solids, mg/L mL

VSample

Solids Concentration, mg/L

olume,

)(1,000,000 grams)Solids,(Dry ×

LVolume,

mgWeight,

Solids Loading Rate, lbs/day/sq ft ftsq Area,Surface

me SRT:see

Mean Cell Residence Time MCRT

lbs/dayApplied,Solids

Solids Retention TiSpecific Gravity

lbs/galWater,of WeightSpecific

lbs/galSubstance,of WeightSpecific

Specific Oxygen Uptake Rate/Respiration Rate, mg/g/hr ( ) ( )( ) )hr 1(L/g,MLVSS

min60mg/L/minRate(OUR),akeOxygen Upt

×

×

Surface Loading Rate or Surface Overflow Rate, gpd/sq ft gpd Flow,

ftsq Area,

2Three Normal Equation N1 x V 1 N x V2 N3 x V3, where V1 V2 V3 ion N1 x V 1 N 2 x 2, where N concentration, V volume or flowTwo Normal Equat V

Velocity, ft/sec ftsq Area,

ftcuRate,Flow sec/ ORsecTime,

ftDistance,

Volatile Solids, % gSolids,Dry

(100%) g)Solids,Fixed gSolids,(Dry ×−

Volume of Cone 0.785 Diamet r Heigh

e

e t

Volume of Cylinder 0.785 Diamet r Height idth Height Volume of Rectangular Tank Length W ality Waste Milliequivalent mL Norm

Watts DC circuit Volts × Amps

atts AC circuit Volts × Amps × Power FactorW Weir Overflow Rate, gpd/ft

ftLength,Weir

gpd Flow,




Revised 6/2009

Wire‐to‐Water Efficiency, % HPMotororHPInput,Power

HP,Horsepower Water× 100%

Wire‐to‐Water Efficiency, % kilowatts)Demand,l(Electrica (3,960)

(100%) kw/hp)(0.746 ft)Head,Dynamic(Total gpm)(Flow,

×

×××

Davidson Pie Diagram: Dosage Formula

lbs/day

Flow, MGD × Concentration, mg/LMass Flux, lbs/day

mg/L

MGD

8.34 lbs/gal

× 8.34 lbs/gal

Conversion Factors:

1 million gallons per day 694 gallons per minute1 acre 43,560 square feet1 million gallons per day 1.55 cubic feet per second

son

1 acre foot 326,000 gallons1 mile 5,280 feet

aulic 100 gallons/per/day

1 cubic foot 7.48 gallonsnds

.646 MGD 448.8 gpmPopulation Equivalent, hydr1 cubic foot 62.4 pouPopulation Equivalent 0.17 lbs BOD/person

ramsch 2.31 feet of water

1 cubic foot per second 0

psi1 pound 0.454 kilog

ins

1 foot 0.305 meters1 pound per square1 t d%

1 foot of water 0.433on 2,000 poun 10,000 mg/L

1 gallon 3.79 liters11 gallon 8.34 pounds

grain per gallon 17.1 mg/L0.746 kW or 746 watts or 33,000 ft. lbs/min

11 horsepower

π or pi 3.14159

bbreviations:

emandl oxygen demand

ORP oxygen reduction pote

tentialBOD biochemical oxygen dOUR oxygen uptake ra

CBOD carbonaceous biochemica

ndemand

ppb parts per billioncfs cubic feet per secoD ical oxygen d ppm parts per million

i ds per square inchCO chem

ps pounDO dissolved oxygen

ratio anism ratioPE population equivalentft feetQ flow

getactor

F/M food to microorgRAS return activated sludg gramsRBC rotating biological con

ex

gpd gallons per day

g er galloner minute SDI sludge density indgp grains p SRT solids retention time

0 30 minute

gpm gallons pSS suspended solidsin inchesSSV3 settled sludge volume

me indexkW kilowattlbs pounds

e

SVI sludge volumg/L milligrams per liter

T residence timTOC total organic carbon

MCR mean cell TS total solidsMGD million gallons per day TSS total suspended solids

VS volatile solidsWAS waste activated sludge

mL milliliterlids

S ended solidMLSS mixed liquor suspended soMLVS mixed liquor volatile suspOCR oxygen consumption rate

abc wastewater fc table 6 2009

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