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SRPS EN 12255-7:2026

Wastewater treatment plants - Part 7: Biological fixed-film reactors

Aug 31, 2026

General information

60.60     Aug 31, 2026

ISS

U165

European Norm

13.060.30  

English  

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Scope

This document of the EN 12255 series specifies design principles and performance requirements for secondary and tertiary treatment of wastewater in biological fixed-film reactors at wastewater treatment plants for more than 50 PT.
Its primary application is for wastewater treatment plants for the treatment of domestic and municipal wastewater. It can also be applied for biodegradable industrial wastewater.
Biological fixed film reactors include rotating biological contactors (RBC), biological trickling reactors (BTR), moving bed biological reactors (MBBR), submerged medium reactors (SMR) and submerged media filters (SMF). Membrane bioreactors (MBR) and anaerobic processes are not within the scope.
Some of the systems using fixed film bacteria are enhanced activated sludge systems (hybrid systems). For such systems, EN 12255-6 also applies.
This document specifies fundamental information about typical systems and does not provide information about all available fixed film systems.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS EN 12255-7:2011

NOW

PUBLISHED
SRPS EN 12255-7:2026
60.60 Standard published
Aug 31, 2026

Related project

Adopted from EN 12255-7:2026 IDENTICAL