NF EN ISO 7827

NF EN ISO 7827

March 2013
Standard Current

Water quality - Evaluation of the "ready", "ultimate" aerobic biodegradability of organic compounds in an aqueous medium - Method by analysis of dissolved organic carbon (DOC)

ISO 7827:2010 specifies a method for the evaluation of the “ready” and “ultimate” biodegradability of organic compounds at a given range of concentrations by aerobic microorganisms. In this context, ISO 7827:2010 also gives specific definitions for the terms “ready” and “ultimate”. The method applies to organic compounds which are: a) soluble at the concentration used under the conditions of the test [dissolved organic carbon (DOC) concentrations of 10 mg/l to 40 mg/l]; b) non‑volatile or having a negligible vapour pressure under the conditions of the test; c) not significantly adsorbable on glass and activated sludge; d) not inhibitory to the test microorganisms at the concentration chosen for the test. The method is not suitable for waste waters, as they usually contain significant amounts of water‑insoluble organic carbon, which is not included in DOC measurements.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2013

Number of pages

22 p.

Reference

NF EN ISO 7827

ICS Codes

13.020.40   Pollution, pollution control and conservation
13.060.70   Examination of biological properties of water

Classification index

T90-312

Print number

1 - 20/02/2013

International kinship

ISO 7827:2010

European kinship

EN ISO 7827:2012
Sumary
Water quality - Evaluation of the "ready", "ultimate" aerobic biodegradability of organic compounds in an aqueous medium - Method by analysis of dissolved organic carbon (DOC)

ISO 7827:2010 specifies a method for the evaluation of the “ready” and “ultimate” biodegradability of organic compounds at a given range of concentrations by aerobic microorganisms. In this context, ISO 7827:2010 also gives specific definitions for the terms “ready” and “ultimate”.

The method applies to organic compounds which are: a) soluble at the concentration used under the conditions of the test [dissolved organic carbon (DOC) concentrations of 10 mg/l to 40 mg/l]; b) non‑volatile or having a negligible vapour pressure under the conditions of the test; c) not significantly adsorbable on glass and activated sludge; d) not inhibitory to the test microorganisms at the concentration chosen for the test.

The method is not suitable for waste waters, as they usually contain significant amounts of water‑insoluble organic carbon, which is not included in DOC measurements.

Replaced standards (1)
NF EN ISO 7827
February 1996
Standard Cancelled
"Water quality. Evaluation in an aqueous medium of the ""ultimate"" aerobic biodegradability of organic compounds. Method by analysis of dissolved organic carbon (doc)."

Table of contents
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  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    2
  • 4 Principe
    3
  • 5 Environnement d'essai
    3
  • 6 Réactifs
    3
  • 7 Appareillage et matériaux
    4
  • 8 Mode opératoire
    5
  • 9 Calcul et expression des résultats
    8
  • 10 Validité de l'essai
    9
  • 11 Rapport d'essai
    9
  • Annexe A (informative) Courbe de dégradation typique
    11
  • Annexe B (informative) Interprétation des résultats
    12
  • Bibliographie
    14
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