Characterization of sludge - Evaluation of sludge density

This document specifies a method for the determination of the sludge (bulk) density. The procedure to determine density of the liquid and of the solid fractions of a suspension is described in Annex C.
This document is applicable to sludge suspensions from:
-   storm water handling;
-   urban wastewater collecting systems;
-   urban wastewater treatment plants;
-   treating industrial wastewater similar to urban wastewater [7];
-   water supply treatment plants.
This method is also applicable to sludge suspensions from other origin, provided the necessary verifications are done.

Charakterisierung von Schlämmen - Beurteilung der Schlammdichte

Dieses Dokument legt ein Verfahren zur Bestimmung der (Roh) Dichte von Schlämmen fest. Das Verfahren zur Bestimmung der Dichte der flüssigen Anteile und der Feststoffanteile in einer Suspension ist in Anhang C beschrieben.
Dieses Dokument ist anwendbar auf Schlammsuspensionen aus den folgenden Bereichen:
—   Behandlung von Regenwasser;
—   Kanalisationssysteme für kommunales Abwasser;
—   Anlagen für die Behandlung von kommunalem Abwasser;
—   Behandlung von industriellem Abwasser, die auf ähnliche Weise erfolgt wie die von kommunalem Abwasser [7];
—   Aufbereitungsanlagen für die Wasserversorgung.
Dieses Verfahren ist auch auf Schlammsuspensionen anderer Herkunft anwendbar, sofern die Anwendbarkeit nachgewiesen wurde.

Caractérisation des boues - Evaluation de la masse volumique des boues

Le présent projet de Norme européenne spécifie une méthode de détermination de la masse volumique (apparente) de la boue. Le mode opératoire permettant de déterminer la masse volumique des fractions liquide et solide d’une suspension est décrit dans l’Annexe C.
Le présent document s’applique aux suspensions de boues provenant :
-   de la collecte des eaux pluviales ;
-   des systèmes de collecte des eaux usées urbaines ;
-   des stations d’épuration des eaux usées urbaines ;
-   de l’épuration des eaux industrielles semblables aux eaux usées urbaines (comme défini dans la Directive 91/271/CEE) ;
-   des stations de traitement des eaux de distribution.
Cette méthode s’applique également aux suspensions de boues d’origine différente, à condition que les vérifications nécessaires soient effectuées.

Karakterizacija blata - Vrednotenje gostote blata

Ta osnutek evropskega standarda določa metodo za določanje (masovne) gostote blata. Postopek za določanje gostote tekočih in trdnih delov suspenzije je opisan v dodatku C.
Ta dokument se uporablja za suspenzije blata iz:
– sistemov za zbiranje deževnice;
– zbiralnih sistemov za mestno odpadno vodo;
– čistilnih naprav za mestno odpadno vodo;
– čiščenja industrijske odpadne vode na podoben način kot komunalne odpadne vode (kot je opredeljeno v Direktivi 91/271 EGS);
– čistilnih naprav v sistemih oskrbe z vodo.
Ta metoda se uporablja tudi za suspenzije blata drugega izvora pod pogojem, da so opravljena potrebna preverjanja.

General Information

Status
Published
Publication Date
18-Dec-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
19-Dec-2018
Completion Date
19-Dec-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Karakterizacija blata - Vrednotenje gostote blataBeurteilung der SchlammdichteCaractérisation des boues - Evaluation de la masse volumique des bouesCharacterization of sludge - Evaluation of sludge density13.030.20Liquid wastes. SludgeICS:Ta slovenski standard je istoveten z:EN 17183:2018SIST EN 17183:2019en,fr,de01-april-2019SIST EN 17183:2019SLOVENSKI

STANDARD
SIST EN 17183:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 17183
December
t r s z ICS
s uä r u rä t r English Version

Characterization of sludge æ Evaluation of sludge density Caractérisation des boues æ Evaluation de la masse volumique des boues

Beurteilung der Schlammdichte This European Standard was approved by CEN on
s { October
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s y s z uã t r s z ESIST EN 17183:2019

EN 17183:2018 (E) 2 Contents Page European foreword ...................................................................................................................................................... 3 Introduction .................................................................................................................................................................... 4 1 Scope .................................................................................................................................................................... 5 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 5 4 Principle ............................................................................................................................................................. 6 5 Interferences .................................................................................................................................................... 6 6 Apparatus .......................................................................................................................................................... 6 7 Procedure .......................................................................................................................................................... 6 8 Expression of results ..................................................................................................................................... 7 9 Precision ............................................................................................................................................................ 7 10 Test report ......................................................................................................................................................... 7 Annex A (informative)

Density vs temperature of distilled water ............................................................. 8 Annex B (informative)

Examples of pycnometer types .................................................................................. 9 Annex C (informative)

Determination of density of the liquid and of the solid fractions ............... 10 C.1 Determination of density of the liquid fraction ................................................................................. 10 C.2 Determination of density of the solid fraction ................................................................................... 10 Annex D (informative)

Results of validation trials ........................................................................................ 12 Bibliography ................................................................................................................................................................. 15

SIST EN 17183:2019

EN 17183:2018 (E) 3 European foreword This document (EN 17183:2018) has been prepared by Technical Committee CEN/TC 308 “Characterization and management of sludge”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2019, and conflicting national standards shall be withdrawn at the latest by June 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 17183:2019

EN 17183:2018 (E) 4 Introduction Knowledge of density is critical to most unit operations in both (i) wastewater treatments which are affected by the difference of density between solid and liquid, e.g. sedimentation, floatation, and (ii) sludge management operations which are affected by bulk density, e.g. centrifugation, storage, spreading. In particular, the effectiveness of secondary clarifiers and sludge thickeners is enhanced by higher sludge floc density which also increases the dewatered cake concentration at the end of mechanical dewatering. Density also affects the (i) sludge volume and, therefore, the transport costs, and (ii) the sludge fluid-dynamic behaviour and, consequently, the head losses in a pipeline or the thermal coefficient in case of turbulent flow, being the Reynolds number depending from it. Density is also useful in modelling sewage bio-reactor, such as biofilm reactor (biofiltration, fluidzed beds). Densities of the dry solids and of the liquid phase should also allow the sludge origin and its degree of decomposition or stabilization to be roughly evaluated, and density of the liquid could give useful indications on the soluble substrate concentration and on the presence of other substances lighter than water [6]. SIST EN 17183:2019

EN 17183:2018 (E) 5 1 Scope This document specifies a method for the determination of the sludge (bulk) density. The procedure to determine density of the liquid and of the solid fractions of a suspension is described in Annex C. This document is applicable to sludge suspensions from: — storm water handling; — urban wastewater collecting systems; — urban wastewater treatment plants; — treating industrial wastewater similar to urban wastewater [7]; — water supply treatment plants. This method is also applicable to sludge suspensions from other origin, provided the necessary verifications are done. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 16720-1, Characterization of sludges - Physical consistency - Part 1: Determination of flowability - Method by extrusion tube apparatus 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:

IEC Electropedia: available at http://www.electropedia.org/

ISO Online browsing platform: available at http://www.iso.org/obp 3.1 (bulk) density mass of material divided by the total volume it occupies 3.2 pycnometer instrument for measuring the density of substances/materials, consisting in a volume-calibrated glass container, often provided with a thermometer and/or a close-fitting ground glass stopper 3.3 relative density ratio of the density of a substance/material to that of a standard substance/material (usually water) SIST EN 17183:2019

EN 17183:2018 (E) 6 4 Principle This method is based on the measurement of the weight and the volume of the sample under examination in standard conditions. The density of any matter depends on its temperature. Nevertheless, in the case of sludge, this effect is covered by measurement uncertainty. In the case of distilled water, the effect of temperature between 15 °C and 25 °C is shown in Annex A. 5 Interferences There are not particular interferences in the evaluation of the sludge density, but the possible presence of air or gas bubbles shall be avoided. 6 Apparatus 6.1

Pycnometer or wide opening bottle of known volume, or graduated cylinder (see Annex B). 6.2

Balance with precision of 0,001 g at least. 6.3
Graduated cylinders and other conventional lab equipment/accessories. 6.4

Thermometer with precision of 0,1 °C at least. 7 Procedure During the test the temperature shall be kept constant (e.g. thermostat controlled room or bath) and the value given in the test report. 7.1

Note or verify/determine the net volume capacity V, in cm3, of the pycnometer by using a control W. 7.2

Determine weight PP, in g, of the empty pycnometer, after drying. 7.3

Fill the pycnometer with the sludge suspension not above the marked limit of volume of the instrument. In case of highly concentrated or low flowable suspensions (se

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