NEN EN ISO 9509 : 2006
Current
The latest, up-to-date edition.
WATER QUALITY - TOXICITY TEST FOR ASSESSING THE INHIBITION OF NITRIFICATION OF ACTIVATED SLUDGE MICROORGANISMS
01-12-2013
National foreword
Committees responsible
Method
1. Scope
2. Normative references
3. Definitions
4. Principle
5. Reagents and materials
6. Apparatus
7. Procedure
8. Calculation and expression of results
9. Validity of results
10. Test report
Annexes
A. Determination of the nitrifying activity of an
activated sludge
B. Example for preparation of the test
C. Bibliography
States a method for assessing the short-term inhibitory effect of waters, wastewaters or test substances on nitrifying bacteria in activated sludge.
| DevelopmentNote |
Supersedes NEN 6511. (10/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| ISO 9509:2006 | Identical |
| BS EN ISO 9509:2006 | Identical |
| UNI EN ISO 9509 : 2007 | Identical |
| I.S. EN ISO 9509:2006 | Identical |
| EN ISO 9509:2006 | Identical |
| UNE-EN ISO 9509:2007 | Identical |
| DIN EN ISO 9509:2006-10 | Identical |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.