I.S. EN 12255-13:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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WASTEWATER TREATMENT PLANTS - PART 13: CHEMICAL TREATMENT - TREATMENT OF WASTEWATER BY PRECIPITATION/FLOCCULATION
Hardcopy , PDF
20-07-2023
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.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 General
4.2 Chemical background and process options
4.2.1 Chemical process
4.2.2 Precipitation processes
4.2.3 Selection of precipitation chemicals
4.3 Storage of chemicals
4.3.1 General
4.3.2 Aluminum salts
4.3.3 Iron salts
4.3.4 Calcium salts
4.4 Dosing equipment
4.4.1 General
4.4.2 Aluminium salts
4.4.3 Iron salts
4.4.4 Calcium salts
4.5 Silos and tanks
4.6 Mixing systems
4.7 Flocculators
4.8 Sedimentation tanks
4.8.1 General
4.8.2 Design considerations
4.8.3 Chemical sludge wasting
4.9 Flotation
4.10 Physical filtration
4.11 Sludge
4.11.1 Sludge production
4.11.2 Sludge characteristics
Annex A (normative) Precipitation chemicals
A.1 Aluminium salts
A.2 Iron salts
A.2.1 Ferrous salts
A.2.2 Ferrous sulphate, monohydrate
A.2.3 Ferrous sulphate, heptahydrate
A.2.4 Ferric salts
A.3 Calcium salts
A.3.1 General
A.3.2 Calcium oxide
A.3.3 Calcium hydroxide
Bibliography
Provides the requirements for chemical treatment of wastewater by precipitation/flocculation for removal of phosphorus and suspended solids.
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| UNE-EN 12255-13:2003 | Identical |
| BS EN 12255-13:2002 | Identical |
| NS EN 12255-13 : 1ED 2003 | Identical |
| NBN EN 12255-13 : 2003 | Identical |
| EN 12255-13:2002 | Identical |
| SN EN 12255-13 : 2002 | Identical |
| NF EN 12255-13 : 2003 | Identical |
| NEN EN 12255-13 : 2003 | Identical |
| UNI EN 12255-13 : 2003 | Identical |
| ONORM EN 12255-13 : 2003 | Identical |
| DIN EN 12255-13:2003-04 | Identical |
| ATV M 274 : 1999 | |
| EN 12255-10:2000 | Wastewater treatment plants - Part 10: Safety principles |
| EN 12255-6:2002 | Wastewater treatment plants - Part 6: Activated sludge process |
| EN 12255-8:2001 | Wastewater treatment plants - Part 8: Sludge treatment and storage |
| ATV-DVWK-M 206 : 2001 | AUTOMATION OF CHEMICAL PHOSPHATE REMOVAL |
| EN 12518:2014 | Chemicals used for treatment of water intended for human consumption - High-calcium lime |
| EN 752-6 : 1998 | DRAIN AND SEWER SYSTEMS OUTSIDE BUILDINGS - PUMPING INSTALLATIONS |
| EN 12255-11:2001 | Wastewater treatment plants - Part 11: General data required |
| EN 10088-2:2014 | Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes |
| EN 12255-1:2002 | Wastewater treatment plants - Part 1: General construction principles |
| ATV A 202 : 1992 | PROCEDIMIENTOS PARA LA ELIMINACION DE FOSFORO DE LAS AGUAS RESIDUALES |
| EN 1085:2007 | Wastewater treatment - Vocabulary |
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