NF EN ISO 9509

April 1995

Standard Cancelled

Water quality. Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste water.

Main informations

Collections

National standards and national normative documents

Publication date

April 1995

Number of pages

10 p.

Reference

NF EN ISO 9509

ICS Codes

13.020.40 Pollution, pollution control and conservation

13.030.20 Liquid wastes. Sludge

Classification index

T90-341

Print number

1 - 01/03/1995

International kinship

ISO 9509:1989

European kinship

EN ISO 9509:1995

Replaced standards (1)

T90-341

December 1990

Published document Cancelled

Water quality. Method for assessing the inibition of nitrification of activated sludge micro-organisms by chemicals and waste waters.

Standard replaced by (1)

NF EN ISO 9509

September 2006

Standard Current

Water quality - Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms

Le présent document spécifie une méthode d'évaluation de l'effet inhibiteur à court terme de la composition des eaux sur des bactéries nitrifiantes dans des boues activées.

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