Aeration Tank Design Calculation Xls. Example calculations and examples illustrating the setup and use of an Excel spreadsheet for making activated sludge design and operational calculations are also included After completing this course you will be familiar with the common variations of the activated sludge process used for biological wastewater treatment and be able to make typical aeration tank design and.
XLS fileAeration tank MLSS X = Aeration tank volume V = mg/L Check on other design parameters ft3 Aeration tank FM = Aeration tank HRT = (lb BOD/day/lb MLVSS) Aeration tank vol VMG = MG (lb BOD/day/1000 ft3) Equations used for Calculations Design Vol Loading VL = % volatile MLSS %Vol = VMG = V*748/1000000 HRT = 24*VMG/Qo.
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PDF fileReading Plans and Calculating Tank Dimensions • Calculate the total volume in million gallons (MG) for aeration tanks and secondary clarifier • Calculate weir length for secondary clarifiers • Conversion 1 cubic foot = 748 gallons (divide by 1 million to get MG!) • Total Number of • Aeration Tanks 4 • Secondary Clarifiers 4.
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VMG= V*748/1000000 HRT= 24*VMG/Qo FM= (834*So*Qo)/(834*%Vol*X*VMG) = (So*Qo)/(%Vol*X*VMG) For Excel spreadsheets to make a variety of activated sludge aeration tank designand operation calculations in either US or SI units for a very reasonable price click here to visit our spreadsheet store.
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XLS fileProvide Membrance diffuser for aeration tank No for each tank Sludge Volume Index assumed Sludge Recirculation Qr/Q=Xt/((10^6/SVI)Xt) Volumetric loading rate kg/cum Xt V = Hydraulic Mean Cell Residence Time Assumed Reduction in the Aeration Tank Outlet BOD from the Aeration tank Secondary clarifier No of Tanks Average Flow in each tank SOR Cum/Sqm/day.
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Design tool Web Based Excel Interface Diagram Quick calculation instructions Plant design inputs Flow temperature and altitude (impacts the oxygenation rate) Biological reactor design inputs Tank depth Higher will improve the oxygen transfer but is limited by construction costs Typical depths are between 4 and 55m for diffused aerators [2].