Statewide (PA) Chlorine Contact Time Tracer Study - Gwin, Dobson ...

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Poor Baffling Condition (circular contact basin with center column feed)
Average Baffling Conditions (rectangular contact basin with “overunder” baffles)
Page 1 and 2: Prepared by: Travis J. Long, Senior
Page 3 and 4: • Gwin, Dobson & Foreman, Inc was
Page 5 and 6: • Tracer studies provide a means
Page 7 and 8: • Determine the desired flow rate
Page 9 and 10: Contact Tank Effluent Sample Locati
Page 11 and 12: • An important step in any tracer
Page 13 and 14: • Tracer Injection : • Injectio
Page 15 and 16: Solution feed tank and variable spe
Page 17 and 18: Example -CT Calculation • Process
Page 19 and 20: Sample Time Actual Time CONTACT TIM
Page 21 and 22: • T 10 Calculation for the Clearw
Page 23 and 24: EPA Table E-3 CT Values for Inactiv
Page 25 and 26: Chlorine Residual (mg/l) Tabulated
Page 27 and 28: Water Treatment Facility Daily Log
Page 29 and 30: • The purpose of baffling is to m
Page 31: Unbaffled Mixing Conditions (rectan
Page 35 and 36: Superior Baffling Conditions (recta
Page 37 and 38: The following table summarizes the
Page 39 and 40: • The PADEP state‐wide tracer s
Page 41: Questions

Statewide (PA) Chlorine Contact Time Tracer Study - Gwin, Dobson ...

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