Population equivalent, PE

The population equivalent is a reference that describes the specific load of a wastewater treatment plant. The BOD5 for one PE is defined as 60g BOD5/d (biological oxygen demand, determined over a period of 5 days). For the description of the load of a wastewater treatment plant, therefore, the total BO5 load in the influent to the plant is divided by the population equivalent, thus giving e.g. a load e.g. 100'000 PE, irrespective of the actual origin (commercial or municipal).
Other design numbers related to the population equivalent are, for example:

TKN (Total Kjelldahl Nitrogen) 10 g N / PE d
Wastewater flow 0,1 - 0,5 m3 / PE d

« back
EssDe GmbH  |  Rietwiesstrasse 39  |  CH-8737 Gommiswald  |  SWITZERLAND  |  Phone +41 55 290 11 41  |  2ino,fow.@em8ssx,dey/.cj4omv