BS 7781:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Procedure for type testing of small biological domestic wastewater treatment plants
Hardcopy , PDF
31-05-2007
English
15-12-1994
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Committees responsible
Foreword
1. Scope
2. References
3. Definitions
4. Plant selection and preliminary evaluation
5. Test procedure
6. Sampling
7. Sample analysis
8. Reporting of results
9. Equipment maintenance and breakdown
10. Design changes
Tables
1. Diurnal flow
2. Alternative test schedules
3. Number of stress tests for the procedure
4. Holiday period stress test
5. Washing machine stress test
6. Bath water stress test
7. Calculation of plant performance down to 8 deg C
8. Sampling periods following stress
9. Sample analysis
10. Bands for effluent quality
List of references
Specifies a procedure for type testing domestic biological wastewater treatment plants for up to 50 population equivalent (PE). Coverage includes: definitions, design changes, and equipment maintenance and breakdown. Also gives detailed tables.
| Committee |
B/505
|
| DevelopmentNote |
Supersedes 93/107080 DC (10/2005)
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| BS EN 1085:2007 | Wastewater treatment. Vocabulary |
| BS 7671:1992 | REQUIREMENTS FOR ELECTRICAL INSTALLATIONS |
| BS 6068-2.33:1987 | Water quality. Physical, chemical and biochemical methods Method for the determination of ammonium: automated spectrometric method |
| BS 6297:1983 | Code of practice for design and installation of small sewage treatment works and cesspools |
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.