EN 1825-2:2002

Grease separators - Part 2: Selection of nominal size, installation, operation and maintenance

This standard specifies requirements on selection of nominal sizes, installation, operation and maintenance of grease separators in accordance with prEN 1825-1:1998. This standard does not apply to waste water containing light liquids, e.g. grease or oils of mineral origin, and does not include treating stable emulsions of grease or oil in water. The standard does not cover the use of biological means (bacteria, enzymes for so-called "self-cleaning").

Abscheideranlagen für Fette - Teil 2: Wahl der Nenngröße, Einbau, Betrieb und Wartung

Diese Norm gibt eine Anleitung zur Wahl von Nenngrößen, Einbau, Betrieb und Wartung von nach
prEN 1825-1 hergestellten Abscheideranlagen für Fette.
Diese Norm gilt nicht für Abwasser, das Leichtflüssigkeiten, z. B. Fette und Öle mineralischen Ursprungs, enthält und schließt nicht die Behandlung von stabilen Emulsionen von Fetten und Ölen in Wasser ein.
Diese Norm gilt nicht für den Einsatz von biologisch aktiven Mitteln (Bakterien, Enzymen).

Installations de séparation de graisses - Partie 2: Choix des tailles nominales, installation, service et entretien

La présente Norme européenne donne des conseils en matière de dimensionnement, d'implantation, de fonctionnement et d'entretien des séparateurs de graisse fabriqués conformément au prEN 1825-1.
La présente norme ne s'applique pas aux eaux usées contenant des liquides légers, par exemple des graisses ou des huiles d'origine minérale, et n'inclut pas non plus le traitement d'émulsions stables de graisse ou d'huile dans l'eau.
La norme ne couvre pas l'utilisation d'additifs biologiques (bactéries, enzymes).

Ločevalnik maščob – 2. del: Izbor nazivne velikosti, vgradnja, delovanje in vzdrževanje

General Information

• Status: Published
• Publication Date: 26-Feb-2002
• Withdrawal Date: 29-Jun-2004
• ICS: 13.340.30 - Respiratory protective devices
• Technical Committee: CEN/TC 165 - Waste water engineering
• Drafting Committee: CEN/TC 165/WG 8 - Separators
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 02-Nov-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 1825-2:2002 - Grease separators - Part 2: Selection of nominal size, installation, operation and maintenance

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Y]GUåHYDQMHAbscheideranlagen für Fette - Teil 2: Wahl der Nenngröße, Einbau, Betrieb und WartungInstallations de séparation de graisses - Partie 2: Choix des tailles nominales, installation, service et entretienGrease separators - Part 2: Selection of nominal size, installation, operation and maintenance13.060.30Odpadna vodaSewage waterICS:Ta slovenski standard je istoveten z:EN 1825-2:2002SIST EN 1825-2:2002en01-december-2002SIST EN 1825-2:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1825-2February 2002ICS 13.060.30English versionGrease separators - Part 2: Selection of nominal size,installation, operation and maintenanceInstallations de séparation de graisses - Partie 2: Choix destailles nominales, installation, service et entretienAbscheideranlagen für Fette - Teil 2: Wahl der Nenngröße,Einbau, Betrieb und WartungThis European Standard was approved by CEN on 29 September 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, Malta, 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© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1825-2:2002 ESIST EN 1825-2:2002

Calculation of maximum wastewater flow Qs.10A.1Calculation based on equipment/fittings discharging into the separator.10A.1.1General.10A.1.2Maximum wastewater flow rate Qs.10A.2Method based upon the type of establishment discharging into the separator.11A.2.1General.11A.2.2Maximum wastewater flow rate Qs.11Annex B (informative)
Densities of greases and oils.14Annex C (informative)
Examples of determining nominal size of grease separator.16C.1Examples of calculation based on equipment/fittings discharging into the separator.16C.2Examples of calculation based on the type of establishment discharging into the separator.21Annex D (informative)
Measures to prevent grease accumulating and grease build-up in the pipelinesupstream of the grease separator.26Bibliography.27SIST EN 1825-2:2002

based upon the type of establishment discharging into the grease separator, ord) special calculation for individual cases, if acceptable by the regulatory authority.Where data is available to determine Qs by b) or c), and the designer is unsure of the most appropriate option ofuse, it is recommended that the higher of the flow rates determined from both calculations is used.6.2.2 Temperature factor ftHigh wastewater temperature reduces the efficiency of grease separators. Temperature factors ft are given inTable 1.Table 1 — Temperature factor ftTemperature of wastewater at inlet°CTemperature factor ft1,0always or occasionally > 601,36.2.3 Density factor fdA density factor fd = 1,0 shall be used for wastewater discharged from kitchens, abattoirs and meat and fishprocessing plants.When the nature of grease/oil is well known, the density coefficient may be taken from Figure 1, where fd is plottedfor a range of different grease and oil densities.For grease/oil densities > 0,94 g/cm3, a density factor of 1,5 shall be used.Densities of different fats and oils are given in annex B.SIST EN 1825-2:2002
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