17.01.2015 Views

GPS-X Technical Reference

GPS-X Technical Reference

GPS-X Technical Reference

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Suspended Growth Models 100<br />

The α correction factor can be specified along the length of the aeration tank in the case<br />

of a plug flow unit process.<br />

<strong>GPS</strong>-X calculates other useful process variables from the standard and field K La as<br />

detailed below:<br />

Oxygen Transfer Rate (OTR) at Field Conditions in g/d<br />

Equation 6.12<br />

Standard Oxygen Transfer Rate (SOTR) in g/d<br />

Equation 6.13<br />

Airflow at Standard Conditions in m 3 d<br />

Equation 6.14<br />

where:<br />

SOTE<br />

CF 1<br />

= standard oxygen transfer efficiency (as a fraction)<br />

= conversion factor to account for the density, molecular weight,<br />

and O2 mole fraction of the standard air<br />

(U.S. Standard = 277.6533841; European Standard =<br />

300.495893)<br />

<strong>GPS</strong>-X <strong>Technical</strong> <strong>Reference</strong>

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!