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

SS-EN-12255-15 - 2004 EDITION - CURRENT


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This European Standard specifies the non-steady state measurement of the oxygen transfer rate and the oxygen transfer efficiency of aeration systems in activated sludge aeration tanks (see EN 12255-6) when filled with clean water. NOTE 1 This is known as the clean water test. NOTE 2 Since the 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 liquor the oxygen transfer rate and the oxygen transfer efficiency can be different from the clean water test results. This is expressed by the a-factor.

To find similar documents by classification:

13.060.30 (Sewage water Including sewage water disposal and treatment Liquid wastes, see 13.030.20 Drainage systems, see 91.140.80 Sewage systems, see 93.030)

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Designation Name

SS-EN 12255-15:2004

Revision Level

2004 EDITION

Status

Current

Publication Date

June 18, 2004

Language(s)

English

Page Count

17

International Equivalent

EN 12255-15:2003(IDT)