BS EN 14742:2015
Current
The latest, up-to-date edition.
Characterization of sludges. Laboratory chemical conditioning procedure
Hardcopy , PDF
English
30-04-2015
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Procedure
7 Test report
8 Precision
Annex A (informative) - Results of Validation trials
Annex B (informative) - Examples for mixing devices
for chemical conditioning procedure
Annex C (informative) - Example of table summarizing
the operating conditions and the results of
the characterization tests
Bibliography
Pertains for sludges and suspensions from: - storm water handling; - urban wastewater collecting systems; - urban wastewater treatment plants; - industrial wastewater that has been treated similarly to urban wastewater (as defined in Directive 91/271/EEC); - water supply plants.
| Committee |
EH/5
|
| DevelopmentNote |
Supersedes 12/30257940 DC. (05/2015)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
The laboratory assessment of sludge dewaterability is sensitive to the operating procedure adopted for the conditioning step. No generalized ranking of products in order of effectiveness can be given since the ranking changes with the sludge type, dosage of conditioning agent, degree of shearing and dewatering device.
The scope of this European Standard applies for sludges and suspensions from:
storm water handling;
urban wastewater collecting systems;
urban wastewater treatment plants;
industrial wastewater that has been treated similarly to urban wastewater (as defined in Directive 91/271/EEC);
water supply plants.
This method is applicable to sludge and suspensions of other origin.
| Standards | Relationship |
| EN 14742:2015 | Identical |
| EN 15935:2012 | Sludge, treated biowaste, soil and waste - Determination of loss on ignition |
| EN 15933:2012 | Sludge, treated biowaste and soil - Determination of pH |
| EN 12880:2000 | Characterization of sludges - Determination of dry residue and water content |
| EN 12832:1999 | Characterisation of sludges - Utilisation and disposal of sludges - Vocabulary |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
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