Abstract

This document specifies the design requirements for plant and equipment to remove solids, other than screenings and grit, from raw wastewater, at wastewater treatment plants for over 50 PT. It includes primary treatment with sedimentation, fine screens and micro-screens NOTE 1 The removal of screenings and grit, are covered in EN 12255, Part 3. NOTE 2 Dissolved air flotation (DAF) is not covered in detail in this document because it is not commonly used for primary treatment in municipal wastewater treatment plants. It may be used for primary treatment of industrial wastewater, but then the design is specific to the application.

Begin

2020-12-08

WI

00165323

Planned document number

DIN EN 12255-4

Project number

11904294

Responsible national committee

NA 119-05-36 AA - Wastewater treatment plants (CEN/TC 165/WG 40)  

Responsible european committee

CEN/TC 165/WG 40 - Wastewater treatment plants > 50 PT  

draft standard

Wastewater treatment plants - Part 4: Primary treatment; German and English version prEN 12255-4:2021
2021-09
Order from Beuth Verlag

previous edition(s)

Wastewater treatment plants - Part 4: Primary settlement; German version EN 12255-4:2002
2002-04

Order from Beuth Verlag