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STANDARD
SIST EN 12255-8:2001
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12255-8May 2001ICS 13.060.30English versionWastewater treatment plants - Part 8: Sludge treatment andstorageStations d'épuration - Partie 8: Stockage et traitement desbouesKläranlagen - Teil 8: Schlammbehandlung und -lagerungThis European Standard was approved by CEN on 8 March 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12255-8:2001 ESIST EN 12255-8:2001
Page 2EN 12255-8:2001ContentsPageForeword.31
Scope.32
Normative references.43
Terms and definitions.44
Planning.55
Process requirements.55.1
General.55.2
Thickening.55.3
Disinfection.65.4
Stabilisation and pseudo-stabilisation.75.5
Sludge dewatering.105.6
Composting.115.7
Handling and storage.126
Construction principles.126.1
Service life.126.2
Pipelines.126.3
Sludge pumps.137
Safety.
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