ISO 20468-1:2018
(Main)Guidelines for performance evaluation of treatment technologies for water reuse systems — Part 1: General
Guidelines for performance evaluation of treatment technologies for water reuse systems — Part 1: General
This document gives guidelines on performance evaluation of treatment technologies for water reuse systems. It provides typical parameters of water quality and treatment efficiency that are associated with the performances of treatment technologies. It also includes a comparison of measured and target values, and provides treatment technology functional requirements and non-functional requirements.
Lignes directrices pour l’évaluation des performances des techniques de traitement des systèmes de réutilisation de l’eau — Partie 1: Généralités
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 20468-1
First edition
2018-11
Guidelines for performance evaluation
of treatment technologies for water
reuse systems —
Part 1:
General
Lignes directrices pour l’évaluation des performances des techniques
de traitement des systèmes de réutilisation de l’eau —
Partie 1: Généralités
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and list of abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 List of abbreviated terms . 4
4 Concepts of treatment technology for water reuse systems . 4
4.1 General . 4
4.2 Treatment objective . 5
4.3 Treatment technologies used in fit-for-purpose water reuse . 6
5 Principles and general guidelines for performance evaluation . 8
5.1 General . 8
5.2 Performance requirements . 9
5.2.1 Treatment technology functional requirements . 9
5.2.2 Treatment technology non-functional requirements . 9
5.2.3 Characteristics of functional and non-functional requirements in
performance evaluation .10
5.3 P erformance evaluation and meeting requirements .10
5.3.1 General.10
5.3.2 Monitoring plan .11
5.4 Application of the guidelines to treatment systems .11
5.4.1 Treatment system design .11
5.4.2 Treatment system configuration .11
6 Functional requirements .12
6.1 General .12
6.2 P erformance evaluation procedures .12
7 Non-functional requirements .14
7.1 Examples of performance indicators .14
7.2 E valuation method of environmental performance .14
7.2.1 Energy consumption .14
7.2.2 Chemical consumption .15
7.2.3 Amount of solid and liquid waste generated and requiring disposal .15
7.2.4 Performance indicators — Integrated considerations.16
7.3 E valuation method of economic performance.16
Annex A (informative) Dependability of treatment technology.17
Annex B (informative) Dependability evaluation .19
Bibliography .21
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 282, Water reuse, Subcommittee SC 3,
Risk and performance evaluation of water reuse systems.
A list of all parts in the ISO 20468 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
Introduction
The rapidly growing global market for water reuse technologies inevitably demands standards
which are applicable on a world-wide basis be developed. Many regions in the world are facing water
shortages, and there is great interest in fit-for-purpose water reuse technologies that can treat and
reclaim wastewater to a water quality level that is suitable for a wide range of reuse applications that
can satisfy non-potable water demands, thereby conserving precious potable water resources. The
implementation of water reuse programs raises public and regulatory concern regarding potential
human health, environmental and societal impacts. This has led to an increasing need to specify
various aspects of water reuse projects, and regulators, reuse technology suppliers, and users of those
technologies have a growing need for international standardization. A great number of opportunities
for sustainable water use and development based on water reclamation can be lost without ISO water
reuse standards.
Standardization needs to include objective specification and evaluation of levels of service and water
reuse system performance dependability including safety, environmental protection, resilience and
cost-effectiveness considerations. Hence, appropriate methods are needed to evaluate the performance
of treatment technologies for water reuse systems.
The performance of treatment technologies for water reuse, inter alia, should be evaluated properly
in order to select the most appropriate technologies in an unbiased way to achieve the objectives of
water reuse projects. Despite considerable research and development on treatment technologies,
such scientific knowledge is largely held within commercial interests. Performance evaluations are
also useful for assessing the efficiency of existing wastewater reclamation systems and operations,
including the identification of continuous improvement opportunities. To address these challenges, this
document provides methods and tools, which can be accepted by most stakeholders, to evaluate the
performance of treatment technologies for water reuse systems for a multitude of applications. This
document provides treatment technology functional requirements and non-functional requirements,
the former based on water quality parameter concentration or removal efficiency and the latter based
on performance indicators. A step-by-step procedure for evaluating the functional requirements and
examples of non-functional key performance indicators and evaluation methods are provided.
This document is intended for use by planners and managers of water reuse projects, technical advisors,
designers, operators of the treatment systems, those involved in monitoring, assessing, regulating and
other activities of third-party organizations or relevant authorities, as well as treatment technology
manufacturers.
The application of the guidelines for performance evaluation at the stages of procurement, designing
and operation of treatment systems can enable, for example:
— designers to identify and evaluate an optimal treatment system design which will meet regulatory
performance requirements;
— manufacturers to determine technology performance expectations;
— operators to evaluate and improve the operating efficiency and performance of water reuse
treatment systems.
This document is not intended to address the design and integration of specific unit treatment processes
or overall treatment system design.
This document can be useful for the application of management system standards, such as ISO 9001,
ISO 14001, ISO 22301, ISO 50001, and ISO 55001.
INTERNATIONAL STANDARD ISO 20468-1:2018(E)
Guidelines for performance evaluation of treatment
technologies for water reuse systems —
Part 1:
General
1 Scope
This document gives guidelines on performance evaluation of treatment technologies for water reuse
systems. It provides typical parameters of water quality and treatment efficiency that are associated
with the performances of treatment technologies. It also includes a comparison of measured and target
values, and provides treatment technology functional requirements and non-functional requirements.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated reference, only the edition cited applies. For
undated references, the latest edition of the referenced document (includin
...
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