ISO 9509:2006
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The latest, up-to-date edition.
Water quality Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms
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23-06-2006
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ISO 9509:2006 specifies a method for assessing the short-term inhibitory effect of waters, waste waters or test substances on nitrifying bacteria in activated sludge. The inhibitory effect is estimated over an exposure period of usually 3 h or up to 24 h with weakly nitrifying sludge.
The method is applicable to nitrifying activated sludge derived from domestic and synthetic sewage and also to sludges from industrial and mixed domestic and industrial waste waters.
The nitrifying activity of the sludge is verified by testing in the presence and absence of a specific inhibitor. If the nitrification rate is within a suitable range for the test, i.e. 2 mg of nitrogen per gram of suspended solid and hour to 6,5 mg of nitrogen per gram of suspended solids and hour, the sludge may be used directly. If not, adjustments are necessary.
The method is applicable to water-soluble, non-volatile chemicals, and to waste waters
| DevelopmentNote |
Supersedes ISO/DIS 9509 (06/2006)
|
| DocumentType |
Standard
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| Pages |
12
|
| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Supersedes |
| Standards | Relationship |
| NEN EN ISO 9509 : 2006 | Identical |
| I.S. EN ISO 9509:2006 | Identical |
| PN EN ISO 9509 : 2006 | Identical |
| SN EN ISO 9509 : 2006 | Identical |
| UNI EN ISO 9509 : 2007 | Identical |
| BS EN ISO 9509:2006 | Identical |
| EN ISO 9509:2006 | Identical |
| NF EN ISO 9509 : 2006 | Identical |
| BS 6068-5.9(1990) : 1990 AMD 8456 | Identical |
| UNE-EN ISO 9509:2007 | Identical |
| DIN EN ISO 9509:2006-10 | Identical |
| NFT 1990 341 : 1990 | Identical |
| CEN ISO/TR 15462:2009 | Water quality - Selection of tests for biodegradability (ISO/TR 15462:2006) |
| I.S. EN ISO 8192:2007 | WATER QUALITY - TEST FOR INHIBITION OF OXYGEN CONSUMPTION BY ACTIVATED SLUDGE FOR CARBONACEOUS AND AMMONIUM OXIDATION |
| PD CEN ISO/TR 15462:2009 | Water quality. Selection of tests for biodegradability |
| 02/565335 DC : DRAFT DEC 2002 | EN ISO 11733 - WATER QUALITY - EVALUATION OF THE ELIMINATION AND BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM - ACTIVATED SLUDGE SIMULATION TEST |
| BS 6068-6.16(1998) : 1998 | WATER QUALITY - SAMPLING - GUIDANCE ON BIOTESTING OF SAMPLES |
| BS EN ISO 11733:2004 | Water quality. Determination of the elimination and biodegradability of organic compounds in an aqueous medium. Activated sludge simulation test |
| ISO 11733:2004 | Water quality — Determination of the elimination and biodegradability of organic compounds in an aqueous medium — Activated sludge simulation test |
| BS EN ISO 8192:2007 | Water quality. Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation |
| ISO 8192:2007 | Water quality Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation |
| EN ISO 11733:2004 | Water quality - Determination of the elimination and biodegradability of organic compounds in an aqueous medium - Activated sludge simulation test (ISO 11733:2004) |
| EN ISO 8192:2007 | Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation (ISO 8192:2007) |
| 05/30106324 DC : DRAFT MAY 2005 | EN ISO 8192 - WATER QUALITY - TEST FOR INHIBITION OF OXYGEN CONSUMPTION BY ACTIVATED SLUDGE (CARBON AND AMMONIUM OXIDATION) |
| S.R. CEN ISO TR 15462:2009 | WATER QUALITY - SELECTION OF TESTS FOR BIODEGRADABILITY |
| ISO/TR 15462:2006 | Water quality Selection of tests for biodegradability |
| DIN EN ISO 8192:2007-05 | Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation (ISO 8192:2007) |
| DIN EN ISO 11733:2004-11 | Water quality - Determination of the elimination and biodegradability of organic compounds in an aqueous medium - Activated sludge simulation test (ISO 11733:2004) |
| ISO 9888:1999 | Water quality Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium Static test (Zahn-Wellens method) |
| ISO 6777:1984 | Water quality — Determination of nitrite — Molecular absorption spectrometric method |
| ISO 11733:2004 | Water quality — Determination of the elimination and biodegradability of organic compounds in an aqueous medium — Activated sludge simulation test |
| ISO 5667-16:2017 | Water quality — Sampling — Part 16: Guidance on biotesting of samples |
| ISO 8192:2007 | Water quality Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation |
| ISO 7150-1:1984 | Water quality — Determination of ammonium — Part 1: Manual spectrometric method |
| ISO 6107-1:2004 | Water quality Vocabulary Part 1: |
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