EN 1825-2:2002

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Application
5 Nominal size
6 Selection of the nominal size
   6.1 General
   6.2 Determination of the specific values
        6.2.1 Maximum flow rate of wastewater
        6.2.2 Temperature factor f[t]
        6.2.3 Density factor f[d]
        6.2.4 Detergent and rinsing agent factor f[r]
   6.3 Special cases
   6.4 Determination of sludge trap volume
7 Installation
   7.1 Limitations
   7.2 Place of installation
   7.3 Drainage to and from the separator
   7.4 Ventilation
8 Operation, inspection and maintenance
Annex A (normative) Calculation of maximum wastewater
        flow Q[s]
   A.1 Calculation based on equipment/fittings
        discharging into the separator
        A.1.1 General
        A.1.2 Maximum wastewater flow rate Q[s]
   A.2 Method based upon the type of establishment
        discharging into the separator
        A.2.1 General
        A.2.2 Maximum wastewater flow rate Q[s]
Annex B (informative) Densities of greases and oils
Annex C (informative) Examples of determining nominal
        size of grease separator
   C.1 Examples of calculation based on
        equipment/fittings discharging into the
        separator
   C.2 Examples of calculation based on the type of
        establishment discharging into the separator
Annex D (informative) Measures to prevent grease
        accumulating and grease build-up in the
        pipelines upstream of the grease separator
Bibliography

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").