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BS EN 12255-8:2024

BS EN 12255-8:2024

$189.07

Wastewater treatment plants – Sludge treatment and storage

Published By Publication Date Number of Pages
BSI 2024 48
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This document specifies design principles and performance requirements for sludge treatment and storage facilities at wastewater treatment plants serving more than 50 PT. Guidance on operation is provided where it is necessary in order to facilitate the design of control and automation and design access to points of operation. NOTE Other sludges and organic wastes can be treated together with municipal sewage sludge where national and local regulations permit.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols and abbreviations
11 5 Planning
12 6 Processes
6.1 General
6.2 Sludge conditioning
6.2.1 Overview
6.2.2 Use of Polymers [14]
14 6.2.3 Polymer storage and distribution
6.3 Sludge thickening
6.3.1 Process selection
15 6.3.2 Gravity thickening
16 6.3.3 Mechanical thickening
6.3.4 Dissolved air flotation
17 6.3.5 Overview of thickening systems
18 6.4 Disinfection
6.4.1 General
19 6.4.2 Thermal disinfection
20 6.4.3 Chemical disinfection
6.4.4 Other methods
6.4.5 Verification of disinfection success
21 6.5 Sludge pre-treatment prior to biological sludge stabilization
6.6 Biological Sludge Stabilization
6.6.1 General and stabilization requirements
6.6.2 Anaerobic sludge digestion
6.6.2.1 General principles [17]
24 6.6.2.2 Design of anaerobic digesters
26 6.6.2.3 Addition of co-substrates [19]
27 6.6.3 Aerobic sludge digestion
6.6.4 Sludge composting
28 6.6.5 Pseudo-stabilization
6.6.5.1 General
6.6.5.2 Chemical treatment
6.7 Sludge dewatering
6.7.1 Sludge drying beds
6.7.2 Mechanical sludge dewatering
31 6.8 Sludge drying [18]
6.8.1 General
32 6.8.2 Belt dryers
33 6.8.3 Solar and additionally heated solar dryers
35 6.9 Sludge handling and storage
6.9.1 General
6.9.2 Liquid sludge holding tanks
6.9.3 Sludge lagoons
6.9.4 Dewatered sludge storage areas
36 6.9.5 Dewatered or dry sludge silos
7 Components
7.1 Service life
7.2 Sludge pipelines
7.3 Sludge pumps
37 8 Health and safety
38 Annex A (informative)Other guidance and information
A.1 Process checks
A.2 Sludge pre-treatment prior to biological sludge stabilization
A.2.1 Sludge disintegration
41 A.2.2 Biological hydrolysis
A.2.3 Recommendations
42 A.3 Basic sludge characteristics
A.3.1 General
43 A.3.2 Further sludge characteristics
44 A.4 Methods to optimize the polymer consumption
A.5 Methods to predict dewatering performance

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BS EN 12255-8:2024
$189.07