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Norm

ÖNORM EN ISO 5815-1

Issue date: 2020 03 15

Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815-1:2019)

This document specifies the determination of the biochemical oxygen demand of waters by dilution and seeding with suppression of nitrification after 5 d or 7 d incubatio...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 34 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This document specifies the determination of the biochemical oxygen demand of waters by dilution and seeding with suppression of nitrification after 5 d or 7 d incubation time. It is applicable to all waters having biochemical oxygen demands usually between 1 mg/l and 6 000 mg/l. It applies particularly to waste waters but also suits for the analysis of natural waters. For biochemical oxygen demands greater than 6 000 mg/l of oxygen, the method is still applicable, but special care is needed taking into consideration the representativeness of subsampling for preparation of the dilution steps. The results obtained are the product of a combination of biochemical and chemical reactions in presence of living matter which behaves only with occasional reproducibility. The results do not have the rigorous and unambiguous character of those resulting from, for example, a single, well-defined, chemical process. Nevertheless, the results provide an indication from which the quality of waters can be estimated.
ÖNORM EN ISO 5815-1
2020 03 15
Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution an...
Norm
ÖNORM EN 1899-1
1998 08 01
Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution an...
Norm
ÖNORM M 6277
1992 02 01
Water quality - Determination of biochemical oxygen demand after 5 days (BOD5) - Dilution and seedin...
Norm
ÖNORM M 6277
1991 02 01
Water quality - Determination of biochemical oxygen demand after 5 days (BOD5) - Dilution and seedin...
Norm
ÖNORM ISO 5815
1985 09 01
Water quality; determination of biochemical oxygen demand after n days (BODn); dilution and seeding ...
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Water quality — Determination of biochemical oxygen demand after n days (BODn) — Part 1: Dilution and seeding method with allylthiourea addition