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BS EN 17971:2024

BS EN 17971:2024

$167.15

Devices for in-situ generation of biocides. Ozone

Published By Publication Date Number of Pages
BSI 2024 42
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This document is applicable to devices for the generation and dosing of ozone. The ozone is generated in these devices according to the technology of dielectric barrier discharge. According to EN 1278 and EN 15074, ozone is suited for the use of the treatment of water intended for human consumption (drinking water), and for the treatment of swimming pool water respectively. Ozone can be added to the water for disinfection and for oxidative purposes. This document can also be applied for other technologies to generate ozone, e.g. electrolysis or UV irradiation, as far as reasonable or applicable. This document specifies device’s construction, and test methods for the equipment used for in situ generation of ozone. It also specifies requirements for instructions for installation, operation, maintenance, safety and for documentation to be provided with the product.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
10 4 Technology of dielectric barrier discharge to generate ozone
11 5 Distinguishing characteristics of ozone generation devices
5.1 General
5.2 Design type of the ozone generation devices
5.3 Operating pressure
12 5.4 Feed gas
5.5 Cooling of the ozone generator
6 Technical data of the ozone generation device
13 7 Name-plate
14 8 Equipment and materials of ozone systems
8.1 General
8.2 Equipment for the supply of feed gas
8.3 Equipment for cooling of the ozone generator
8.4 Materials
8.4.1 Materials for parts in contact with feed gas
8.4.2 Materials for parts in contact with ozone
8.5 Electrical equipment
15 8.6 Control and monitoring
8.7 Residual ozone destructor
9 Chemistry
9.1 Chemistry of ozone generation
17 9.2 Purity requirements for the feed gas
18 9.3 Chemistry of reaction by-products of ozone generation
9.4 Chemistry of by-products of ozone dosed in water
19 10 Device for dosing ozone
11 Installation site
20 12 Cooling agent
13 Operational safety requirements of ozone systems
22 14 Operation and maintenance
15 Testing of ozone generation devices for its characterization
15.1 General
15.2 Scope of testing
23 15.3 Check of documentation and design
16 Nominal output of the ozone generation
16.1 Determination of the nominal output of the ozone generation device
24 16.2 Determination of the volumetric flow rate Qout
25 16.3 Photometric determination of the ozone concentration γn by UV absorption
16.3.1 Brief description of the method
27 16.3.2 Procedure and evaluation
28 16.4 Determination of the ozone concentration γn by titration
16.4.1 Brief description
16.4.2 Apparatus
29 16.4.3 Reagents
16.4.4 Procedure
31 16.4.5 Evaluation
32 Annex A (informative)Examples for mixing devices
A.1 Mixing by injector and static mixer
33 A.2 Multiphase pumps
A.3 Direct injection and static mixer
34 A.4 Additional mixing methods
36 Annex B (normative)Methods to determine ozone in water
B.1 DPD Method
B.2 Indigo Method
37 B.3 potentiometric Method
38 Annex C (informative)Safety measures to prevent ozone leakages

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BS EN 17971:2024
$167.15