The BOD5 media surface loading rates are based upon conservative removal rates at 20 °C. The pollutant surface loading rates and removal rates for this design are corrected for a minimum wastewater temperature of 13 °C using the VanT Hoff-Arrhenius relationship and incorporating the applicable coefficient, (theta). As a result of the winter w'astewater temperature, the surface loading rates and pollutant removal rates are reduced by approximately lA the removal rates at 20 °C, and hence govern the design of the system. Verification of the selected surface loading rates are confirmed by the data and technical literature summarized at the conclusion of this document.
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