I.S. EN 12255-7:2002
Current
The latest, up-to-date edition.
WASTEWATER TREATMENT PLANTS - PART 7: BIOLOGICAL FIXED-FILM REACTORS
Hardcopy , PDF
English
01-01-2002
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 General
4.1.1 Biological fixed film processes
4.1.2 Trickling filters
4.1.3 Rotating biological contactors
4.1.4 Submerged bed reactors and biofilters
4.2 Planning
4.3 Process
4.3.1 Design
4.3.2 Modes of operation
4.3.3 Selection of support media
4.3.4 Dimensions
4.3.5 Flow distribution
4.3.6 Oxygen supply
4.3.7 Clarification and solid separation
4.3.8 Additional considerations
4.4 Detailed design
4.4.1 Structures
4.4.2 Mechanical and electrical equipment
Bibliography
Defines the design principles and performance requirements for secondary treatment by biological fixed-film reactors at wastewater treatment plants for more than 50 PT.
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| NEN EN 12255-7 : 2002 | Identical |
| NF EN 12255-7 : 2002 | Identical |
| BS EN 12255-7:2002 | Identical |
| NBN EN 12255-7 : 2002 | Identical |
| EN 12255-7:2002 | Identical |
| BS EN 12255-7:2002 | Equivalent |
| DIN EN 12255-7:2002-04 | Identical |
| NS EN 12255-7 : 1ED 2002 | Identical |
| UNE-EN 12255-7:2003 | Identical |
| ATV A 135 : 1989 | PRINCIPLES FOR THE DIMENSIONING OF BIOLOGICAL FILTERS AND BIOLOGICAL CONTACTORS WITH CONNECTION VALUES OVER 500 POPULATION EQUIVALENTS |
| EN 12255-10:2000 | Wastewater treatment plants - Part 10: Safety principles |
| ATV A 257 : 1989 | PRINCIPLES FOR THE DIMENSIONING OF WASTEWATER LAGOONS AND IN-LINE BIOLOGICAL FILTERS OR BIOLOGICAL CONTACTORS |
| EN 12255-6:2002 | Wastewater treatment plants - Part 6: Activated sludge process |
| EN 752-6 : 1998 | DRAIN AND SEWER SYSTEMS OUTSIDE BUILDINGS - PUMPING INSTALLATIONS |
| EN 12255-11:2001 | Wastewater treatment plants - Part 11: General data required |
| DIN 19569-8:2005-06 | Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 8: Specific principles for the equipment for sewage treatment in granular media filter and granular fixed bed filter |
| BS 1438:1971 | Specification for media for biological percolating filters |
| EN 12255-1:2002 | Wastewater treatment plants - Part 1: General construction principles |
| ATV A 122 : 1991 | PRINCIPLES FOR DIMENSIONING, CONSTRUCTION AND OPERATION OF SMALL SEWAGE TREATMENT PLANTS WITH AEROBIC BIOLOGICAL PURIFICATION STAGE FOR CONNECTION VALUES BETWEEN 50 AND 500 TOTAL NUMBER OF INHABITANTS AND POPULATION EQUIVALENTS |
| EN 1085:2007 | Wastewater treatment - Vocabulary |
| BS 6297:1983 | Code of practice for design and installation of small sewage treatment works and cesspools |
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