EN 12255-4:2002

Wastewater treatment plants - Part 4: Primary settlement

This European Standard specifies the performance requirements for the primary settlement of wastewater at wastewater treatment plants for over 50 PT.
The primary application is for wastewater treatment plants designed for the treatment of domestic and municipal wastewater.
Differences in wastewater treatment throughout Europe have led to a variety of systems being developed. This standard gives fundamental information about the systems; this standard has not attempted to specify all available systems.
Detailed information additional to that contained in this standard may be obtained by referring to the bibliography.

Kläranlagen - Teil 4: Vorklärung

Diese Europäische Norm legt Ausführungsanforderungen an die Vorklärung von Abwasser auf Kläranlagen für über 50 EW fest.
Vorrangig gilt dies für Kläranlagen, die zur Behandlung von häuslichem oder kommunalem Abwasser bestimmt sind.
Die Unterschiede in Planung und Bau von Kläranlagen in Europa haben zu einer Vielzahl von Anlagenausführungen geführt. Diese Europäische Norm enthält grundsätzliche Angaben zu den Anlagenausführungen; sie beschreibt jedoch nicht alle Einzelheiten jeder Ausführungsart.
Die in den Literaturhinweisen aufgeführten Unterlagen enthalten Einzelheiten und Hinweise, die im Rahmen dieser Norm verwendet werden dürfen.

Stations d'épuration - Partie 4: Décantation primaire

La présente Norme européenne spécifie les prescriptions de performance pour la décantation primaire des eaux usées pour plus de 50 EH.
La principale application concerne les stations d'épuration des eaux usées domestiques et municipales.
Des différences en matière de traitement des eaux usées résiduaires à travers l'Europe ont conduit au développement de systèmes variés. La présente norme donne les informations de base sur les systèmes et n' a pas eu pour objectif d'essayer de spécifier tous les systèmes disponibles.
Des informations détaillées, complémentaires à celles contenues par la présente norme, peuvent être obtenues en se reportant à la bibliographie.

Čistilne naprave za odpadno vodo – 4. del: Primarni usedalnik

General Information

• Status: Withdrawn
• Publication Date: 15-Jan-2002
• Withdrawal Date: 28-Feb-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
• 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 12255-4:2002 - Wastewater treatment plants - Part 4: Primary settlement

Relations

• Replaced By: EN 12255-4:2023 - Wastewater treatment plants - Part 4: Primary treatment
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12255-4:2002
01-december-2002
ýLVWLOQHQDSUDYH]DRGSDGQRYRGR±GHO3ULPDUQLXVHGDOQLN
Wastewater treatment plants - Part 4: Primary settlement
Kläranlagen - Teil 4: Vorklärung
Stations d'épuration - Partie 4: Décantation primaire
Ta slovenski standard je istoveten z: EN 12255-4:2002
ICS:
13.060.30 Odpadna voda Sewage water
SIST EN 12255-4:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 12255-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2002
ICS 13.060.30
English version
Wastewater treatment plants - Part 4: Primary settlement
Stations d'épuration - Partie 4: Décantation primaire Kläranlagen - Teil 4: Vorklärung
This European Standard was approved by CEN on 9 November 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12255-4:2002 E
worldwide for CEN national Members.

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EN 12255-4:2002 (E)
Contents
page
Foreword.3
1 Scope .5
2 Normative references .5
3 Terms and definitions.5
4 Requirements .5
4.1 General.5
4.2 Planning.6
4.3 Process .6
4.3.1 General.6
4.3.2 Required Capacity .6
4.3.3 Upward Flow Tanks (including Imhoff Tanks) .6
4.3.4 Horizontal Flow Tanks.7
4.3.5 Lamella Separator.7
4.3.6 Sludge Collection and Removal .7
4.3.7 Scum Removal .8
4.4 Maintenance .8
4.5 Health and Safety.8
Bibliography .
...