Calculating Aeration Flow and Pressure Requirements

Calculating Aeration Flow and Pressure RequirementsBrought to you by:For your free subscription, please visit rights are reserved. The contents of this publication may not be reproduced in whole or in part without consent of Smith Onandia Communications LLC. Smith Onandia Communications LLC does not assume and hereby disclaims any liability to any person for any loss or damage caused by errors or omissions in the material contained herein, regardless of whether such errors result from negligence, accident, or any other cause materials presented are educational. Each blower system is unique and must be evaluated on its own your free subscription, please visit About the SpeakerTom Jenkins, JenTechInc. President of JenTechInc. Has over 30 years of experience with Aeration blowers and blower controlsBrought to you by: Aeration BLOWER SELECTIONIT S ALL ABOUT THE BUBBLESWEBINAR THURSDAY, 5/26/20162:00 PM TO 2:30 PM ESTBLOWER & VACUUM BEST PRACTICES 1:35 PM4 TOPICS BASIC WASTEWATER TREATMENT PROCESS BLOWER FUNCTIONS BASICS OF DETERMINING air flow RATE BASICS OF DETERMINING DISCHARGE Pressure SUMMARY OF APPLICATION CONSIDERATIONS1:35 PM5 PROCESS BASICS1:35 PM6 Primary ClarifierBar ScreensInflu en tRaw Wastew aterPrimary Sludg eto Digestio nAeration BasinSeco ndary ClarifierWaste Activated Slud ge (WAS) to Digestio nReturn Acti vated Slud ge (RAS) Ambient Ai rSeco ndary Effluentto Disin fectionor Additio

DETERMINING AIR FLOW RATE SCFM= 0.335∙mgd OTE ∙(ppmBOD∙1.1+ppmNH3∙4.6) SCFM = Air Flow Rate standard ft3/min OTE = Oxygen Transfer Efficiency, decimal ppmBOD = parts per million Biochemical Oxygen Demand ppmNH 3 = parts per million ammonia 1:35 PM 13 •FIELD OTE VARIES FROM 0.004 TO 0.008 PER FOOT OF SUBMERGENCE (0.4% TO 0.8% OTE/ft.)

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  Flows, Air flow

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