The UV Validation Process - What's New - Ohiowater.org

The UV Validation Process - What's New - Ohiowater.org The UV Validation Process - What's New - Ohiowater.org

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RED calc Algorithm1Aef g hiRED 10(Sobs)(Q)(N)() (UVS )254jWhere:RED cal= calculated RED (mJ/cm 2 )S = average observed intensity among all duty sensors, mW/cm 2 ;Q = flow rate, gpm;N = number of lamp modules or rows, unitless;A 254= water abs at 254 nm, (Calculated as -Log(UVT 254/100)), cm -1 ;UVS = avg UV sensitivity of challenge organism, mJ/cm 2 /Logreduction;e, f, g, h, i, j = equation parameters.

Calculated RED (mJ/cm 2 )Comparison of Observed and Calculated RED70.060.050.0Validation Factor becomes afunction of the scatter of theexperimental data40.030.020.010.00.00.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0Observed RED (mJ/cm 2 )

RED calc Algorithm1Aef g hiRED 10(Sobs)(Q)(N)() (<strong>UV</strong>S )254jWhere:RED cal= calculated RED (mJ/cm 2 )S = average observed intensity among all duty sensors, mW/cm 2 ;Q = flow rate, gpm;N = number of lamp modules or rows, unitless;A 254= water abs at 254 nm, (Calculated as -Log(<strong>UV</strong>T 254/100)), cm -1 ;<strong>UV</strong>S = avg <strong>UV</strong> sensitivity of challenge <strong>org</strong>anism, mJ/cm 2 /Logreduction;e, f, g, h, i, j = equation parameters.

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