EN 12255-6:2023

Wastewater treatment plants - Part 6: Activated sludge process

This document specifies performance requirements for treatment of wastewater using the activated sludge process for plants over 50 PT.
The informative Annexes A to W provide design information.

Kläranlagen - Teil 6: Belebungsverfahren

Dieses Dokument legt Leistungsanforderungen an die Abwasserreinigung mit dem Belebungsverfahren in Kläranlagen für über 50 EW fest.
Es wurde mittlerweile eine Vielzahl an unterschiedlichen Belebungssystemen entwickelt. Dieses Dokument trifft jedoch keine Festlegungen für alle verfügbaren System. Es macht grundsätzliche Angaben zu einstufigen Anlagen.
Der informative Anhang A, der informative Anhang B und der informative Anhang C enthalten Angaben zur Planung und Auslegung.

Stations d'épuration - Partie 6: Procédé à boues activées

Le présent document spécifie les exigences de performance relatives au traitement des eaux usées à l’aide du procédé à boues activées pour les stations d’épuration de plus de 50 équivalents-habitants (EH).
Les Annexes A à W, informatives, fournissent des informations de conception.

Čistilne naprave za odpadno vodo - 6. del: Postopek z aktivnim blatom

Ta dokument določa zahteve za čiščenje odpadnih voda s postopkom z aktivnim blatom v čistilnih napravah za več kot 50 populacijskih ekvivalentov.
Razvili so se različni sistemi aktivnega blata. Cilj tega dokumenta ni opisati vse razpoložljive sisteme. Ta dokument podaja osnovne informacije o enostopenjskih sistemih.
Informativni dodatki A, B in C zagotavljajo informacije o načrtovanju.

General Information

• Status: Published
• Publication Date: 04-Jul-2023
• ICS: 13.060.30 - Sewage water
• Technical Committee: CEN/TC 165 - Waste water engineering
• Drafting Committee: CEN/TC 165/WG 40 - Wastewater treatment plants > 50 PT
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 05-Jul-2023
• Due Date: 19-Sep-2022
• Completion Date: 05-Jul-2023
• Directive: 93/38/EEC - Procurement procedures of entities operating in the water, energy, transport and telecommunications sectors
• Mandate: M/BC/CEN/88/15 - Standardization request to CEN/CENELEC in the field of Water supply, drainage and sewerage
• Ref Project: SIST EN 12255-6:2023 - Wastewater treatment plants - Part 6: Activated sludge process

Relations

• Replaces: EN 12255-6:2002 - Wastewater treatment plants - Part 6: Activated sludge process
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12255-6:2023
01-september-2023
Nadomešča:
SIST EN 12255-6:2002
Čistilne naprave za odpadno vodo - 6. del: Postopek z aktivnim blatom
Wastewater treatment plants - Part 6: Activated sludge process
Kläranlagen - Teil 6: Belebungsverfahren
Stations d'épuration - Partie 6: Procédé à boues activées
Ta slovenski standard je istoveten z: EN 12255-6:2023
ICS:
13.060.30 Odpadna voda Sewage water
SIST EN 12255-6:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12255-6:2023

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SIST EN 12255-6:2023


EN 12255-6
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2023
EUROPÄISCHE NORM
ICS 13.060.30 Supersedes EN 12255-6:2002
English Version

Wastewater treatment plants - Part 6: Activated sludge
process
Stations d'épuration - Partie 6: Procédé à boues Kläranlagen - Teil 6: Belebungsverfahren
activées
This European Standard was approved by CEN on 28 May 2023.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12255-6:2023 E
worldwide for CEN national Members.

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SIST EN 12255-6:2023
EN 12255-6:2023 (E)
Contents
Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols and abbreviations . 8
4.1 Symbols . 8
4.2 Indices (not included in the symbols or abbreviations below). 10
4.3 Abbreviations . 11
5 Requirements . 12
5.1 General. 12
5.2 Planning . 13
5.2.1 Basic information. 13
5.2.2 System selection . 14
5.2.3 Biological reactors . 18
5.2.4 Clarifiers .
...