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BS EN 12255-14:2023

BS EN 12255-14:2023

$167.15

Wastewater treatment plants – Disinfection

Published By Publication Date Number of Pages
BSI 2023 38
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This document specifies design principles and performance requirements for disinfection of effluents (excluding sludge) at wastewater treatment plants serving more than 50 PT. NOTE Sludge disinfection is described in EN 12255-8.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols and abbreviations
12 5 Design requirements
5.1 General
13 5.2 Planning
5.2.1 General
5.2.2 Level of disinfection
5.3 Process design
5.3.1 General
14 5.3.2 UV radiation
15 5.3.3 Ozonation
18 5.3.4 Chlorination
20 5.3.5 Peracids (Peracetic acid)
5.3.6 Membrane filtration
21 5.3.7 Effluent maturation ponds
5.3.8 Soil filtration
22 5.3.9 Hydrogen peroxide
5.4 Process control
23 5.5 Structures
5.6 Health and safety
25 Annex A (normative)Ozone system classification
26 Annex B (informative)Measurement of ozone concentration in water
B.1 General
B.2 Titrimetric determination of the ozone concentration according to the KI method
B.2.1 Principle
B.2.2 Reagents
B.2.2.1 Potassium iodide solution
B.2.2.2 Sodium thiosulphate solution
B.2.2.3 Citric acid, diluted
B.2.2.4 Zinc iodide-starch solution
B.2.3 Apparatus
27 B.2.4 General accessories
B.2.5 Procedure
29 B.2.6 Evaluation
30 B.2.7 Errors
B.3 Photometric determination within the UV range
B.3.1 Method
32 B.3.2 Errors

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BS EN 12255-14:2023
$167.15