SIST DIN 19643-2:2003

SLOVENSKI STANDARD
SIST DIN 19643-2:2003
01-maj-2003
Priprava bazenske vode za plavalne in kopalne bazene - 2. del: Kombinacija
postopkov: adsorpcija, flokulacija, filtracija, kloriranje
Treatment of water of swimming-pools and baths - Part 2: Combination of process:
Adsorption, flocculation, filtration, chlorination
Ta slovenski standard je istoveten z:
ICS:
13.060.25 Voda za industrijsko uporabo Water for industrial use
SIST DIN 19643-2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST DIN 19643-2:2003

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SIST DIN 19643-2:2003
DEUTSCHE NORM April 1997
Treatment and disinfection of water used in
{
bathing facilities
Part 2: Combined adsorption, coagulation, filtration and
19643-2
chlorination method
ICS 13.060.30 Supersedes parts of
DIN 19643, April 1984
edition.
Descriptors: Water treatment, bathing facilities, requirements.
Aufbereitung von Schwimm- und Badebeckenwasser –
Teil 2: Verfahrenskombination: Adsorption – Flockung – Filtration –
Chlorung
In keeping with current practice in standards published by the International Organization for Standardization
(ISO), a comma has been used throughout as the decimal marker.
Foreword
This standard has been prepared by Technical Committee IV 13 of the Normenausschuß Wasserwesen
(Water Practice Standards Committee).
This revision of DIN 19643 is in response to article 11 of the Bundesseuchengesetz (German Federal Com-
municable Diseases Act) which deals with water for swimming pools and public baths. The Legionella
pneumophila and trihalomethane (haloform) values specified in the regulation which implements this article
(the Schwimm- und Badebeckenwasserverordnung (German Regulation on water used in bathing facili-
ties))*) have been incorporated into the present standard.
At the same time, the standard was divided into several parts: Part 1 specifies general requirements, while
subsequent parts deal with different combinations of water treatment methods. Additional parts can now
be added to the series as the state of the art develops.
To ensure proper application of this standard, water treatment systems should be designed, built and
monitored only by experienced specialists. Attention is drawn to DVGW-Arbeitsblätter (DVGW Codes of
practice) W 200 and W 201, which specify procedures for certifying water treatment experts.
Amendments
This standard differs from DIN 19643, April 1984 edition, as follows:
a) The standard now consists of four parts.
b) The treatment process has been supplemented to include adsorption on powdered activated carbon.
c) The standard has been brought in line with the state of the art.
Previous edition
DIN 19643: 1984-04.
1 Scope
This standard specifies a method for the treatment of water in bathing facilities (except therapeutic pools),
combining adsorption, coagulation, filtration, and chlorination.
This standard is to be used together with DIN 19643-1.
*) Currently at draft stage.
Continued on pages 2 to 8.
Translation by DIN-Sprachendienst.
In case of doubt, the German-language original should be consulted as the authoritative text.
© No part of this translation may be reproduced without the prior permission of
Ref. No. DIN 19643-2 : 1997-04
DIN Deutsches Institut für Normung e. V., Berlin.
English price group 06 Sales No. 0106
Beuth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen).
11.99
NormCD Stand 2004-03

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SIST DIN 19643-2:2003
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DIN 19643-2 : 1997-04
2 Normative references
This standard incorporates, by dated or undated reference, provisions from other publications. These norma-
tive references are cited at the appropriate places in the text, and the titles of the publications are listed below.
For dated references, subsequent amendments to or revisions of any of these publications apply to this
standard only when incorporated in it by amendment or revision. For undated references, the latest edition of
the publication referred to applies.
DIN 19603 Activated carbon for water treatment – Technical delivery conditions
DIN 19605 Fixed-bed filters for water treatment – Design and components
DIN 19623 Filter sand and gravel for water filters – Technical delivery conditions
DIN 19624 Precoat filters for water treatment
DIN 19643-1 Treatment and disinfection of water used in bathing facilities – General requirements
DIN 38409-7 German standard methods for the examination of water, waste water and sludge – Parameters
characterizing effects and substances (group H) – Determination of acidity and alkalinity (H7)
DIN 66131 Principles of determining the effective surface area of solid particles by the Brunauer, Emmett
and Teller (BET) gas adsorption method
DIN EN 878 Chemicals used for treatment of water intended for human consumption – Aluminium sulfate
DIN EN 881 Chemicals used for treatment of water intended for human consumption – Aluminium chloride,
aluminium chloride hydroxide and aluminium chloride hydroxide sulfate (monomeric)
DIN EN 882 Chemicals used for treatment of water intended for human consumption – Sodium aluminate
DIN EN 888 Chemicals used for treatment of water intended for human consumption – Iron(III) chloride
DIN EN 890 Chemicals used for treatment of water intended for human consumption – Iron(III) sulfate
DIN EN 891 Chemicals used for treatment of water intended for human consumption – Iron(III) chloride
sulfate
DIN EN 896 Chemicals used for treatment of water intended for human consumption – Sodium hydroxide
DIN EN 897 Chemicals used for treatment of water intended for human consumption – Sodium carbonate
DIN EN 898 Chemicals used for treatment of water intended for human consumption – Sodium hydrogen
carbonate
DIN EN 899 Chemicals used for treatment of water intended for human consumption – Sulfuric acid
DIN EN 936 Chemicals used for treatment of water intended for human consumption – Carbon dioxide
DIN EN 939 Chemicals used for treatment of water intended for human consumption – Hydrochloric acid*)
DVGW-Arbeitsblätter (DVGW Codes of practice)**)
DVGW-Arbeitsblatt W 200 Zertifizierung von Unternehmen für Wasseraufbereitungsanlagen – Anforderungen
und Prüfung (Certification of water treatment plant manufacturers – Requirements and testing)
DVGW-Arbeitsblatt W 201 Zertifizierung von DVGW-Sachverständigen für Wasseraufbereitung – Anfor-
derungen und Prüfung (Certification of DVGW experts for water treatment – Requirements and testing)
DVGW-Arbeitsblatt 240 Beurteilung von Aktivkohlen für die Wasseraufbereitung (Assessment of acti-
vated carbon for water treatment)
3 Principle
Dissolved and dispersed colloidal organic impurities are first partially adsorbed onto powdered activated
carbon. In the subsequent stage, dispersed colloidal impurities and very fine particles of the activated carbon
are destabilized by coagulation using iron(III) or aluminium salts, and orthophosphates are precipitated. During
this process, the pH value of the raw water is kept within a range consistent with the type of coagulant used.
The mixture of contaminated activated carbon, iron(III) phosphate or aluminium phosphate, and colloids is then
removed by filtration. The filtrate is chlorinated and fed to the bath or pool water. In some cases, the stage of
adsorption onto powdered activated carbon is not necessary (see subclause 4.3).
–3 3
The maximum load capacity factor, k, obtained is 0,5 · m , equivalent to a treated water volume of 2 m per
person.
*) Currently at draft stage.
**) Obtainable from Wirtschafts- und Verlagsgesellschaft Gas und Wasser mbH, Postfach 14 01 51, D-53056
Bonn.
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DIN 19643-2 : 1997-04
4 Procedure
4.1 Acidity adjustment
4.1.1 General
To achieve satisfactory coagulation, the acidity, K (cf. DIN 38409-7), of the raw water shall be adjusted to
S4,3
a given minimum value, unless the acidity of the filling water is high enough to preclude that of the raw water
from dropping below the minimum value. Acidity adjustment shall be made by adding an aqueous solution of
sodium carbonate or sodium hydrogencarbonate to the raw water via a feeder.
4.1.2 Reagents
Sodium carbonate (as in DIN EN 897) or sodium hydrogencarbonate (as in DIN EN 898) shall be used for acidity
adjustment.
4.1.3 Minimum acidity
When the method as described in this standard is used for bathing facilities other than hot whirlpool baths (with
3
in-house treatment system), K shall be not less than 0,7 mol/m , and, when this method is used for hot
S4,3
3
whirlpool baths (with in-house treatment system), K shall be not less than 0,3 mol/m .
S4,3
4.1.4 Check
After the reagents added have been thoroughly dispersed, the acidity shall be determined to check for com-
pliance with the values specified in subclause 4.1.3.
4.2 pH value adjustment
4.2.1 General
For satisfactory coagulation and adequate disinfection with the lowest possible consumption of disinfectant,
the pH value of the water shall be adjusted to a preset value using a feeder which automatically controls the
pH value. The reagents added shall be thoroughly mixed with the water before they reach the pH sensor and
the sampling point.
4.2.2 Reagents
The following reagents shall be used for pH value adjustment:
a) sodium carbonate (as in DIN EN 897) or sodium hydroxide (as in DIN EN 896) if the pH value of the raw
water is too low;
b) carbon dioxide (as in DIN EN 936), hydrochloric acid (as in DIN EN 939), sulfuric acid (as in DIN EN 899),
or sodium hydrogensulfate if the pH value of the raw water is too high.
4.2.3 pH value range
The pH shall range between 6,5 and 7,2 if aluminium salts are used for coagulation and between 6,5 and 7,5
(or 7,8 in the case of sea water) if iron salts are used for coagulation.
4.2.4 Check
After the reagents have been added, check whether the preset pH value is maintained to within t 0,1, using a
pH meter.
4.3 Adsorption on powdered activated carbon
4.3.1 General
Powdered activated carbon shall be introduced into the treatment system in an amount proportional to the flow.
The carbon may be added directly to wetting devices and pumped into the water stream of the system.
Alternatively, an activated carbon/water suspension may be added, but it will be necessary to agitate such a
suspension constantly and keep its pH value below 2 by adding acid in order to avoid microbial contamination.
If the potential of the filling water for forming haloforms is low, the addition of powdered activated carbon will
not be necessary when DIN 19605 filters are used. Nevertheless, provision shall be made for retrofitting if it is
found that required values for combined chlorine and haloforms are not maintained.
4.3.2 Powdered activated carbon
The carbon powder used for water treatment shall be as specified in DIN 19603, and shall have a particle size
distribution as given in table 1, in compliance with DVGW-Arbeitsblatt W 240.
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Table 1: Particle size distribution of powdered activated carbon
Particle size, mm Percentage by mass
Above 0,071 Below 25
Below 0,045
Above 50
To ensure that the activated carbon is added at a reliable rate under operational conditions, the percentage
oversize (specifically that having a diameter greater than 1 mm) shall be minimized.
To ensure that the adsorption capacity is adequate, the total effective surface area of particles (determined by
2
the BET method as in DIN 66131), shall be greater than 900 m /g.
The composition of the filling water may be subject to great regional variation; therefore, before a final choice
is made, different types of carbon shall be tested prior to tr
...