EN 12255-15:2003
Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants

Standard No.

EN 12255-15:2003

Release Date

2003

Published By

European Committee for Standardization (CEN)

Latest

EN 12255-15:2003

Scope

This European Standard specifies the non-steady state measurement of the oxygen transfer rate andThe oxygen transfer efficiency of aeration systems in activated sludge aeration tanks (see EN 12255-6) when filled with clean water.NOTE 1This is known asThe clean water test.NOTE 2 SinceThe method is based on completely mixed tanks or tanks with evenly distributed aerators or diffusers test results from certain aeration installations can be incorrect.NOTE 3 Under process conditions with mixed liquorThe oxygen transfer rate andThe oxygen transfer efficiency can be different fromThe clean water test results.This is expressed byThe α-factor

EN 12255-15:2003 history

• 2003 EN 12255-15:2003 Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants