EN ISO 9887:1994
(Main)Water quality - Evaluation of the aerobic biodegradability of organic compounds in an aqueous medium - Semi-continuous activated sludge method (SCAS) (ISO 9887:1992)
Water quality - Evaluation of the aerobic biodegradability of organic compounds in an aqueous medium - Semi-continuous activated sludge method (SCAS) (ISO 9887:1992)
The method specified applies to organic compounds which are soluble, non-volatile (or which have a neglible vapour pressure), not lost by foaming from the test solution, not significantly adsorbable on glass and activated sludge, not inhibitory to the test microorganisms. Its principle is comparison with the comparison of dissolved organic carbon in the effluent from a control unit. Annex A gives examples of results of the test on various compounds, Annex B typical control values.
Wasserbeschaffenheit - Bestimmung der aeroben biologischen Abbaubarkeit organischer Stoffe im wäsrigen Medium - Halbkontinuierlicher Belebtschlammtest (SCAS) (ISO 9887:1992)
Qualité de l'eau - Evaluation, en milieu aqueux, de la biodégradabilité aérobie des composés organiques - Méthode semi-continue par boues activées (Méthode SCAS) (ISO 9887:1992)
La présente Norme internationale prescrit une méthode d'évaluation de la biodégradabilité (ultime ou primaire) de composés organiques. Les conditions d'essai décrites dans la présente Norme internationale sont beaucoup plus favorables à la biodégradation que celles qui sont spécifiées pour les méthodes d'évaluation de la biodégradabilité décrite dans l'ISO 7827, l'ISO 9408 et l'ISO 9439. La méthode est applicable à des composés organiques a) solubles à la concentration utilisée et dans les conditions de l'essai; b) non volatils ou ayant une pression de vapeur négligeable dans les conditions de l'essai; c) non susceptibles d'être perdus par formation de mousse à partir de la solution d'essai; d) non adsorbables de façon notable sur le verre et des boues activées; e) n'ayant pas d'action inhibitrice, à la concentration choisie pour l'essai, sur les micro-organismes utilisés. L'existence d'une action inhibitrice peut être mise en évidence par une méthode appropriée (par exemple celle de l'ISO 8192). Si le composé à expérimenter est toxique, il faut l'utiliser à une concentration plus fai 362ble ou employer un inoculum préexposé.
NOTE 1 Les unités SCAS (boues activées semi-continues) peuvent être utilisées, spécifiquement ou complémentairement, pour produire des boues exposées au composé à expérimenter, afin de déterminer si la boue devient adaptée, pour être utilisée comme inoculum dans d'autres essais de biodégradation.
Kakovost vode - Vrednotenje aerobne biološke razgradljivosti organskih snovi v vodnem okolju - Semi kontinuirna metoda aktivnega blata (SCAS) (ISO 9887:1992)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 9887:1998
01-januar-1998
Kakovost vode - Vrednotenje aerobne biološke razgradljivosti organskih snovi v
vodnem okolju - Semi kontinuirna metoda aktivnega blata (SCAS) (ISO 9887:1992)
Water quality - Evaluation of the aerobic biodegradability of organic compounds in an
aqueous medium - Semi-continuous activated sludge method (SCAS) (ISO 9887:1992)
Wasserbeschaffenheit - Bestimmung der aeroben biologischen Abbaubarkeit
organischer Stoffe im wäsrigen Medium - Halbkontinuierlicher Belebtschlammtest
(SCAS) (ISO 9887:1992)
Qualité de l'eau - Evaluation, en milieu aqueux, de la biodégradabilité aérobie des
composés organiques - Méthode semi-continue par boues activées (Méthode SCAS)
(ISO 9887:1992)
Ta slovenski standard je istoveten z: EN ISO 9887:1994
ICS:
13.060.70 Preiskava bioloških lastnosti Examination of biological
vode properties of water
SIST EN ISO 9887:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 9887:1998
---------------------- Page: 2 ----------------------
SIST EN ISO 9887:1998
---------------------- Page: 3 ----------------------
SIST EN ISO 9887:1998
---------------------- Page: 4 ----------------------
SIST EN ISO 9887:1998
---------------------- Page: 5 ----------------------
SIST EN ISO 9887:1998
---------------------- Page: 6 ----------------------
SIST EN ISO 9887:1998
INTERNATIONAL
STANDARD 9887
First edition
1992-l O-01
Water quality - Evaluation of the aerobic
biodegradability of organic compounds in an
- Semi-continuous activated
aqueous medium
sludge method (SCAS)
Qua/it@ de I’eau - haluafion, en milieu aqueux, de la biod&gradabilit6
- Methode semi-continue par boues
akrobie des compos& organiques
actkkes (Methode SCAS)
Reference number
IS0 9887: 1992(E)
---------------------- Page: 7 ----------------------
SIST EN ISO 9887:1998
IS0 9887:1992(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. IS0 collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Drat? International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an lnter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard IS0 9887 was prepared by Technical Committee
ISO/TC 147, Water qualify, Sub-Committee SC 5, Biological methods.
Annexes A and B of this International Standard are for information only.
0 IS0 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without
permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
---------------------- Page: 8 ----------------------
SIST EN ISO 9887:1998
INTERNATIONAL STANDARD IS0 9887:1992(E)
Evaluation of the aerobic biodegradability of
Water quality -
organic compounds in an aqueous medium -
Semi-continuous activated sludge method (SCAS)
WARNING - SAFETY PRECAUTIONS - Activated sludge and sewage may contain potentially
pathogenic organisms. Therefore appropriate precautions should be taken when handling them. Toxic
test compounds and those whose properties are unknown should be handled with care.
1 Scope 2 Normative references
This International Standard specifies a method for
the evaluation of the biodegradability (“ultimate” or
The following standards contain provisions which,
“primary”) of organic compounds. The conditions
through reference in this text, constitute provisions
described in this International Standard are much
of this International Standard. At the time of publi-
more favorable for biodegradation than those spec-
cation, the editions indicated were valid. All stan-
ified in the methods for biodegradability described
dards are subject to revision, and parties to
in IS0 7827, IS0 9408 and IS0 9439.
agreements based on this International Standard
are encouraged to investigate the possibility of ap-
The method applies to organic compounds which
plying the most recent editions of the standards in-
are
dicated below. Members of IEC and IS0 maintain
registers of currently valid International Standards.
a) soluble at th
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.