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BS ISO 23070:2020

BS ISO 23070:2020

$142.49

Water Reuse in Urban Areas. Guidelines for reclaimed water treatment: Design principles of a RO treatment system of municipal wastewater

Published By Publication Date Number of Pages
BSI 2020 32
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This document provides guidelines for the planning and design of a reverse osmosis (RO) treatment system of municipal wastewater. This document is applicable to practitioners and authorities who intend to implement principles and decisions on RO treatment of municipal wastewater in a safe, reliable and sustainable manner. This document addresses RO treatment systems of municipal wastewater in their entirety and is applicable to any RO treatment system component.

This document provides:

  • standard terms and definitions;

  • a description of the system components of an RO treatment system of municipal wastewater;

  • design principles of an RO treatment system of municipal wastewater;

  • statements on the feed water quality and technical requirements of an RO treatment system;

  • guidance for operation and maintenance of an RO treatment system;

  • specific aspects for consideration and emergency response.

Design parameters and regulatory values of an RO treatment system of municipal wastewater are out of the scope of this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Abbreviated terms
5 Application of RO treatment systems for reclaimed water
5.1 Overview
12 5.2 Design considerations
5.2.1 Safety considerations
5.2.2 Stability considerations
5.2.3 Economy considerations
5.3 RO system components
5.3.1 General
13 5.3.2 Feed water source
5.3.3 Pre-treatment unit
5.3.4 RO treatment unit
5.3.5 Auxiliary equipment
5.3.6 Post treatment unit
5.3.7 Water quality and performance monitoring system
6 Technical considerations of pre-treatments
6.1 Quality considerations of feed water
6.1.1 General water quality index
14 6.1.2 Silt density index
6.1.3 Organic index
15 6.1.4 Biological index
6.1.5 Oxidation-reduction potential
6.2 Selection of mechanical pre-treatments
6.2.1 Clarification
6.2.2 Media/Multimedia filtration
6.2.3 Activated carbon filtration
16 6.2.4 Microfiltration and ultrafiltration
6.2.5 Cartridge filtration
6.3 Chemical pre-treatments
6.3.1 Antiscalants
6.3.2 Chemical oxidizers for disinfection of the feed
6.3.3 Reductants
6.3.4 Non-oxidizing biocides
7 Technical and structural considerations of RO unit
7.1 Components
7.1.1 RO feed pumps
17 7.1.2 RO membrane modules
7.1.3 Pressure vessels
7.2 Selection of RO membranes
7.2.1 Membrane materials
18 7.2.2 Membrane modules
7.3 RO unit configuration
19 8 Operating conditions and maintenance system
8.1 Operating conditions
8.1.1 Pressure
8.1.2 Temperature
8.1.3 Feed water flow and permeate flux
8.1.4 Concentrate flow
20 8.1.5 pH
8.2 RO performance parameters
8.2.1 Permeate flow rate
21 8.2.2 Salt rejection
8.2.3 Pressure drop
8.3 Automatic chemical dosing system
8.3.1 Dosing point
8.3.2 Dosing method
8.4 Control and monitor system of RO performance
8.4.1 Instrumentation
22 8.4.2 Control system
8.4.3 Monitoring system
8.5 Cleaning system
8.5.1 Physical cleaning
8.5.2 Chemical cleaning
23 8.6 Integrity testing of RO systems
24 8.7 System failure
25 9 Post-treatment unit
10 RO concentrate management
11 Emergency response plan
27 Annex A (informative) Example of an RO treatment system for reclaimed water
28 Annex B (informative) Information of chlorine disinfection for the influent of an RO system
29 Annex C (informative) Maturity level of technologies applied to RO concentrate treatment
30 Bibliography

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BS ISO 23070:2020
$142.49