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BS EN 12255-5:2024

BS EN 12255-5:2024

$102.76

Wastewater treatment plants – Lagooning processes

Published By Publication Date Number of Pages
BSI 2024 18
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This document is applicable to lagoons and specifies the performance requirements for the installation of lagooning processes. This document applies to wastewater lagooning processes treating municipal wastewater from combined or separate sewage systems and when used as a tertiary treatment. NOTE Lagoon systems are especially suitable for the treatment of wastewater where large flow variations occur (e.g. arising from surface water connections in the collection system). They are also especially suitable where large load variations occur (e.g. arising from fluctuating seasonal or industrial flows).

PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
7 Introduction
Figure 1 ā€” Schematic diagram of wastewater treatment plants
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Symbols and abbreviations
5 Process description
5.1 General
Table 1 ā€” Lagoon types and processes
5.2 Anaerobic lagoons
5.3 Facultative lagoons
10 5.4 Mechanically aerated lagoons
5.5 Clarification lagoons
5.6 Maturation lagoons
5.7 Combinations with other systems
6 Requirements
6.1 General
6.2 Preliminary treatment
6.3 Siting
11 6.4 Accessibility
6.5 Design
6.5.1 Process considerations
6.5.2 Watertightness
12 6.5.3 Banks
6.5.4 Pre-treatment
6.5.5 Integration
6.5.6 Hydraulic design of lagoons
6.5.6.1 Flow arrangement
6.5.6.2 Lagoon geometry
6.5.6.3 Design of the inflow
6.5.6.4 Design of the outlet
13 6.5.6.5 Arranging guide walls or dykes
6.5.6.6 Series connection, cascading
6.5.6.7 Recirculation of effluent water
14 Annex A (informative) Typical design parameters for lagoons
Table A.1 ā€” Typical design values of facultative lagoons
Table A.2 ā€” Typical design values of mechanically aerated lagoons
15 Table A.3 ā€” Typical design values of clarification lagoons
Table A.4 ā€” Typical design values of maturation lagoons
16 Bibliography

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BS EN 12255-5:2024
$102.76