prEN ISO 19388

Sludge recovery, recycling, treatment and disposal - Requirements and recommendations for the operation of anaerobic digestion facilities (ISO 19388:2023)

This document establishes requirements and recommendations for the operation of the anaerobic digestion of sludge in order to support safe and sufficient operation of anaerobic digestion facilities to produce to produce sufficient biogas and control by-products qualities.
In particular, conditions to optimize mixing within the reactor and appropriate control systems management for safe and reliable operation are described in this document. Performance of the processes in terms of biogas and digestate production are presented depending on type of technologies available on the market. Blending sludge with waste (co-substrate) and mixing the sludge with organic wastes to increase digester loading are also considered.
This document is applicable to decision-makers and operators in charge of an anaerobic digestion system.

Valorisation, recyclage, traitement et élimination des boues - Exigences et recommandations pour l'exploitation des installations de digestion anaérobie (ISO 19388:2023)

Predelava, recikliranje, obdelava in odlaganje blata - Zahteve in priporočila za delovanje naprav za anaerobni razkroj (ISO 19388:2023)

General Information

• Status: Not Published
• Publication Date: 09-Nov-2025
• ICS: 13.030.20 - Liquid wastes. Sludge
• Technical Committee: CEN/TC 308 - Characterization of sludges
• Drafting Committee: CEN/TC 308 - Characterization of sludges
• Current Stage: 4010 - Start of draft translation - Enquiry
• Start Date: 28-Mar-2025
• Completion Date: 28-Mar-2025
• Ref Project: oSIST prEN ISO 19388:2025 - Sludge recovery, recycling, treatment and disposal - Requirements and recommendations for the operation of anaerobic digestion facilities (ISO 19388:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2025
Predelava, recikliranje, obdelava in odlaganje blata - Zahteve in priporočila za
delovanje naprav za anaerobni razkroj (ISO 19388:2023)
Sludge recovery, recycling, treatment and disposal - Requirements and
recommendations for the operation of anaerobic digestion facilities (ISO 19388:2023)
Valorisation, recyclage, traitement et élimination des boues - Exigences et
recommandations pour l'exploitation des installations de digestion anaérobie (ISO
19388:2023)
Ta slovenski standard je istoveten z: prEN ISO 19388
ICS:
13.030.20 Tekoči odpadki. Blato Liquid wastes. Sludge
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 19388
First edition
2023-03
Sludge recovery, recycling, treatment
and disposal — Requirements and
recommendations for the operation of
anaerobic digestion facilities
Valorisation, recyclage, traitement et élimination des boues —
Exigences et recommandations pour l'exploitation des installations de
digestion anaérobie
Reference number
ISO 19388:2023(E)
ISO 19388:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 19388:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 3
4 Fundamentals .3
4.1 Boundaries . 3
4.2 Principle . 4
4.3 Pre-treatment . 5
4.3.1 General . 5
4.3.2 Physical pre-treatment . 8
4.3.3 Chemical pre-treatment . 9
4.3.4 Enzymatic hydrolysis . 9
4.4 Digester . 9
4.4.1 Shape . 9
4.4.2 Configurations . 10
4.4.3 Mixing system . 11
4.4.4 Heating system . 14
4.4.5 Operating temperature . 14
4.4.6 Line description . 14
5 Digestion performance .15
5.1 Feedstock composition.15
5.2 Feeding characterization .15
5.3 E valuation of the potential production of methane . 16
5.4 A ssessment of foaming risks . 19
5.5 Rheological properties .20
5.6 Prediction of biogas quality . 20
6 Operating performance .21
6.1 Pre-treatment . 21
6.1.1 General . 21
6.1.2 Shock loading or digester over-loading .22
6.1.3 Inadequate or excessive heating . 22
6.1.4 Commissioning, start-up . 22
6.1.5 Mixing efficiency and hydraulic retention time . 24
6.1.6 Gas system . 25
6.1.7 Gas monitoring . 26
6.1.8 CH production. 26
6.1.9 Process monitoring . 26
6.1.10 Return liquors . 27
6.2 Digestate quality and characteristics . 27
6.2.1 Process efficiency . 27
6.2.2 Dewaterability .28
6.2.3 Biogas quality .28
6.2.4 Biogas quantity .28
6.2.5 Biogas conditioning .29
7 Process safety — Trouble shooting .30
7.1 Pressure control . 30
7.2 Stop of CHP machines . 30
7.3 Odour management . 30
7.4 Foaming . 30
iii
ISO 19388:2023(E)
7.5 Corrosion . 31
7.6 Struvite deposits . 31
7.7 Sand and grit removal . 31
Annex A (informative) Stabilization of sludge .32
+
Annex B (informative) Chemical parameters of ammonium — pKa values of NH /NH .35
3 4
Bibliography .36
iv
ISO 19388:2023(E)
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 d
...