SIST DIN 19643-4:2003
(Main)Treatment of water of swimming pools and baths - Part 4: Combination of process: Flocculation, ozonisation, multilayer filtration, chlorination
Treatment of water of swimming pools and baths - Part 4: Combination of process: Flocculation, ozonisation, multilayer filtration, chlorination
Priprava bazenske vode za plavalne in kopalne bazene - 4. del: Kombinacija postopkov: Flokulacija, ozoniranje, večslojna filtracija, kloriranje
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST DIN 19643-4:2003
01-maj-2003
3ULSUDYDED]HQVNHYRGH]DSODYDOQHLQNRSDOQHED]HQHGHO .RPELQDFLMD
SRVWRSNRY )ORNXODFLMDR]RQLUDQMHYHþVORMQDILOWUDFLMDNORULUDQMH
Treatment of water of swimming pools and baths - Part 4: Combination of process:
Flocculation, ozonisation, multilayer filtration, chlorination
Ta slovenski standard je istoveten z:
ICS:
13.060.25 Voda za industrijsko uporabo Water for industrial use
SIST DIN 19643-4:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST DIN 19643-4:2003
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SIST DIN 19643-4:2003
DEUTSCHE NORM February 1999
Treatment and disinfection of water used in
{
bathing facilities
Part 4: Combined coagulation, ozonization, multi-layer filtration
19643-4
and chlorination method
ICS 13.060.25 Supersedes parts of
DIN 19643, April 1984
edition.
Descriptors: Water treatment, bathing facilities, requirements.
Aufbereitung von Schwimm- und Badebeckenwasser –
Teil 4: Verfahrenskombination: Flockung – Ozonung –
Mehrschichtfiltration – 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 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 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, combining coagulation,
ozonization, multi-layer filtration and chlorination.
It is to be used together with DIN 19643-1.
2 Normative references
This standard incorporates, by dated or undated reference, provisions from other publications. These
normative 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.
*) Currently at draft stage.
Continued on pages 2 to 11.
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 19643-4 : 1999-02
DIN Deutsches Institut für Normung e. V., Berlin.
English price group 08 Sales No. 0108
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 19643-4:2003
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DIN 19643-4 : 1999-02
DIN 19603 Activated carbon for water treatment – Technical delivery conditions
DIN 19605 Fixed-bed filters for water treatment – Design and components
DIN 19627 Ozone generators 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 – Anforde-
rungen und Prüfung (Certification of DVGW experts for water treatment – Requirements and testing)
DVGW-Arbeitsblatt W 240 Beurteilung von Aktivkohlen für die Wasseraufbereitung (Assessment of acti-
vated carbon for water treatment)
[1] Moll, H.-G. Die Bettausdehnung bei der Filterspülung (Filter bed expansion during backwashing). Archiv
des Badewesens, 1992: 45, p. 530.
3 Principle
3.1 General
Dissolved and dispersed colloidal impurities and orthophosphates are first destabilized by coagulation using
iron(III) or aluminum salts and ozone, and then removed by filtration. Chlorine by-products are adsorbed and
any residual ozone and chlorine removed. In the case of variant D, coagulation is only performed if the natural
iron content of the filling water is not high enough to eliminate phosphates. A high redox potential due to the
effects of the ozone leads to a quick elimination of microorganisms and the inactivation of viruses.
The filtrate is then chlorinated and fed to the bath or pool water.
–3 3
The maximum load capacity factor, k, obtained is 0,6 · m , equivalent to a treated water volume of 1,67 m per
person.
3.2 Variants A and B
(See figures 1 and 2.)
Dispersed colloidal impurities are first 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.
Following coagulation, ozone is added in order to oxidize chemical constituents of the water, eliminate micro-
organisms and inactivate viruses. The metal salts present serve as catalysts and accelerate the decomposition
of nitrogenous impurities. To ensure a complete reaction, the chamber in which the water to be treated comes
in contact with the ozone (e.g. ozone reactor) should have a volume large enough to ensure a water residence
time of at least ten minutes.
*) Currently at draft stage.
**) Obtainable from Wirtschafts- und Verlagsgesellschaft Gas und Wasser mbH, Postfach 14 01 51, D-53056
Bonn.
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Next, the treated water is passed through either an open (variant A) or a closed (variant B) multi-layer filter,
removing any residual ozone, separating off the substances precipitated by ozone treatment and coagulation,
and largely adsorbing haloforms.
Finally, the filtrate is chlorinated and fed to the bath or pool water.
3.3 Variant C
(See figure 3.)
Dispersed colloidal impurities are first 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.
Following coagulation, ozone is added in order to oxidize chemical constituents of the water, eliminate micro-
organisms and inactivate viruses. The metal salts present serve as catalysts and accelerate the decomposition
of nitrogenous impurities.
After a reaction time of more than three minutes, the treated water is passed through a multi-layer filter
comprising a top layer of pumice, an intermediate layer of powdered activated carbon, and a bottom layer of
sand. This removes any residual ozone, separates off the substances precipitated by ozone treatment and
coagulation, and largely adsorbs haloforms.
Finally, the filtrate is chlorinated and fed to the bath or pool water.
3.4 Variant D
(See figure 4.)
In a pressurized reactor, ozone is added to the water to be treated in order to oxidize chemical constituents of
the water, eliminate microorganisms and inactivate viruses. If the iron content of the filling water is not high
enough to eliminate phosphate, then orthophosphates are precipitated by adding iron(III) or aluminium salts.
Next, the ozonated water is passed through a closed, multi-layer filter with a mixture of pumice and powdered
activated carbon as the top layer, and sand as the bottom layer. This removes any residual ozone, separates
off the substances precipitated by ozone treatment and coagulation, and largely adsorbs haloforms.
Finally, the filtrate is chlorinated and fed to the bath or pool water.
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
S4,3
to 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 .
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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 this
value. The reagents added shall be thoroughly mixed with the water before they reach the pH sensor and the
sampling point.
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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 ± 0,1, using a
pH meter.
4.3 Coagulation (variants A, B and C only)
4.3.1 General
After the acidity and pH value of the water have been adjusted, coagulant shall be added continually so that
it is evenly distributed across the water surface, using a feeder.
The coagulant shall be rapidly and completely mixed with the water directly at the feed point. This can
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