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DIN EN 12255-13 E : 2003

Current
Current

The latest, up-to-date edition.

WASTEWATER TREATMENT PLANTS - PART 13: CHEMICAL TREATMENT - TREATMENT OF WASTEWATER BY PRECIPITATION/FLOCCULATION
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2003

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 requirements for chemical treatment of wastewater by precipitation/flocculation for removal of phosphorus and suspended solids.

DocumentType
Standard
Pages
16
PublisherName
German Institute for Standardisation (Deutsches Institut für Normung)
Status
Current

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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
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
EN 1085:2007 Wastewater treatment - Vocabulary

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