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dnaSRPS EN 12255-3:2021

Wastewater treatment plants - Part 3: Preliminary treatment

General information

50.60     Nov 2, 2023



European Norm



This document specifies design principles and performance requirements for preliminary wastewater treatment using screens with a mesh size above 50 μm, at plants serving more than 50 PT. It also includes grit removal and grease separation.
NOTE 1 For micro-screens with a mesh size below 50 microns see EN 12255 16.
NOTE 2 The primary application of this document is for wastewater treatment plants designed for the treatment of domestic and municipal wastewater. However, it contains information that can also be useful for commercial and industrial wastewater pretreatment and for combined sewer overflows (CSO).
This document applies in combination with EN 12255 1 and EN 12255 10.

Life cycle


SRPS EN 12255-3:2009


dnaSRPS EN 12255-3:2021
50.60 Close of voting. Proof returned by secretariat
Nov 2, 2023

Related project

Adopted from EN 12255-3:2024