SIST DIN 19643-3:2003
(Main)Treatment of water of swimming-pools and baths - Part 3: Combination of process: Flocculation, filtration, ozonization, absorbing filtration, chlorination
Treatment of water of swimming-pools and baths - Part 3: Combination of process: Flocculation, filtration, ozonization, absorbing filtration, chlorination
Priprava bazenske vode za plavalne in kopalne bazene - 3. del: Kombinacija postopkov: flokulacija, filtracija, ozoniranje, absorpcijska filtracija, kloriranje
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SLOVENSKI STANDARD
SIST DIN 19643-3:2003
01-maj-2003
Priprava bazenske vode za plavalne in kopalne bazene - 3. del: Kombinacija
postopkov: flokulacija, filtracija, ozoniranje, absorpcijska filtracija, kloriranje
Treatment of water of swimming-pools and baths - Part 3: Combination of process:
Flocculation, filtration, ozonization, absorbing filtration, chlorination
Ta slovenski standard je istoveten z:
ICS:
13.060.25 Voda za industrijsko uporabo Water for industrial use
SIST DIN 19643-3:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST DIN 19643-3:2003
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SIST DIN 19643-3:2003
DEUTSCHE NORM April 1997
Treatment and disinfection of water used in
{
bathing facilities
Part 3: Combined coagulation, filtration, ozonization, sorption
19643-3
filtration and 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 3: Verfahrenskombination: Flockung – Filtration – Ozonung –
Sorptionsfiltration – 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 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,
filtration, ozonization, sorption 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 stage of draft.
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 19643-3 : 1997-04
DIN Deutsches Institut für Normung e. V., Berlin.
English price group 07 Sales No. 0107
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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DIN 19643-3 : 1997-04
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 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 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)
3 Principle
Dispersed colloidal impurities are first destabilized by coagulation using iron(III) or aluminium salts, and by
flocculation, 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 (stage 1).
The mixture of iron(III ) or aluminium phosphate, and colloids is then removed by filtration (stage 2).
The filtrate is treated with ozone to oxidize chemical constituents of water, eliminate microorganisms and
inactivate viruses (stage 3).
Following that, using an activated carbon filter, those substances which have been precipitated by ozone
treatment and oxidized pollutants are absorbed, and chlorine by-products and any residual ozone in the water
are removed (stage 4).
The filtrate is then chlorinated and fed to the bath or pool water (stage 5).
–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.
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.
*) Currently at stage of draft.
**) Obtainable from Wirtschafts- und Verlagsgesellschaft Gas und Wasser mbH, Postfach 14 01 51,
D-53056 Bonn.
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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 Coagulation
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 be
achieved, for example, by means of a sudden change in pipe diameter (e.g. by reducing the pipe diameter by
30 %) immediately downstream of the feed point. The reaction time prior to the water entering the liquid head
of the filter shall be at least ten seconds, with the flow velocity of the water not exceeding 1,5 m/s. After flocs
have formed in the reaction section, care shall be taken to ensure that they are not destroyed by internal pipe
fittings.
Throttle valves shall only be fitted upstream of the reaction section or downstream of the filter section.
Provided the requirements specified in table 2 in DIN 19643-1 are complied with, it will not be necessary to add
coagulant between bathing sessions.
4.3.2 Coagulants
The following may be used as coagulants:
a) aluminium sulfate, as in DIN EN 878;
b) aluminium chloride hexahydrate, as in DIN EN 881;
c) sodium aluminate, as in DIN EN 882;
d) aluminium chloride hydroxide or aluminium chloride hydroxide sulfate, as in DIN EN 881;
e) iron(III) chloride hexahydrate, as in DIN EN 888;
f) iron(III) chloride sulfate solution, as in DIN EN 891;
g) iron(III) sulfate, as in DIN EN 890.
4.3.3 Minimum quantity of coagulant to be added
3
The minimum quantity of coagulant added shall be 0,05 g/m for aluminium salts (expressed as Al) and
3
0,1 g/m for iron salts (expressed as Fe).
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4.3.4 Check
The correct performance of the coagulation process shall be checked by verifying compliance with the require-
ments set out in table 3 (at filter outlet).
4.4 Filtration
4.4.1 General
The water shall be filtered to remove virtually all of the contaminated powdered activated carbon, destabilized
colloids, precipitated aluminium phosphate or iron phosphate, and aggregated and encapsulated microorgan-
isms which have escaped the action of the disinfectant in the pool. Matter retained by the filters shall be
removed by backwashing.
DIN 19605 filters shall be used for filtration. They shall be operated for not less than 24 hours.
4.4.2 DIN 19605 filters (rapid filters)
4.4.2.1 Size fractions, bed heights and filtration rates
The size fractions, bed heights and filtration rates for single-medium filters using filter sand as in DIN 19623
shall be as specified in table 1, those for multi-media filters as s
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