1、 November 2012 DIN 19643-4 ICS 13.060.30 Treatment of water of swimming pools and baths Part 4: Combinations of process with ultrafiltration, English translation of DIN 19643-4:2012-11 Aufbereitung von Schwimm und Badebeckenwasser Teil 4: Verfahrenskombinationen mit Ultrafiltration, Englische berset
2、zung von DIN 196434:201211 Traitement de leau des bassins des piscines et des bains Partie 4: Combinaisons du procs avec ultrafiltration, Traduction anglaise de DIN 196434:201211 Document comprises 17 pages Translation by DINSprachendienst. In case of doubt, the Germanlanguage original shall be cons
3、idered authoritative. No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DINNormen). English price group 11 www.din.de www.beuth.de !$?
4、w“ 1972884 10.15DIN 19643-4:2012-11 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions 5 4 Principles of the process combinations 6 5 Process stages . 6 5.1 Acid neutralizing capacity adjustment 6 5.1.1 General 6 5.1.2 Compo
5、unds used to adjust acid neutralizing capacity . 6 5.1.3 Minimum acid neutralizing capacity value 7 5.1.4 Checking the acid neutralizing capacity 7 5.2 pH value adjustment . 7 5.3 Flocculation . 7 5.3.1 General 7 5.3.2 Flocculants . 7 5.3.3 Minimum quantity of flocculant to be added 7 5.3.4 Checking
6、 the flocculant dosage 8 5.4 Eliminating disinfection by-products. 8 5.4.1 Adsorption by powdered activated carbon 8 5.4.2 Adsorption by granular activated carbon 9 5.4.3 Ultraviolet radiation . 9 5.5 Planning and designing UF plants . 9 5.5.1 Plant structure 9 5.5.2 Calculating plant dimensions . 1
7、1 5.5.3 Plant operation 11 5.6 Operating UF systems . 11 5.6.1 General . 11 5.6.2 Filtration 11 5.6.3 Operation shut-down/interruptions . 12 5.6.4 Backwashing . 12 5.6.5 Monitoring and documentation 14 5.6.6 Servicing and maintenance . 14 5.6.7 Waste disposal . 14 5.6.8 Testing the filtration . 15 5
8、.6.9 Chlorination 16 6 Load capacity factor k 16 7 Quality requirements for membrane modules 16 Bibliography 17 DIN 19643-4:2012-11 3 Foreword This standard has been prepared by Working Committee NA 119-04-13 AA Schwimmbeckenwasser of the Normenausschuss Wasserwesen (Water Practice Standards Committ
9、ee). The decision to revise the series of standards was prompted by the increasing use of ultrafiltration in the treatment of swimming pool water, a process which is characterized by membrane pore sizes that are small enough to stop the passage of viruses, bacteria and parasites almost completely, t
10、hus providing a high degree of hygienic safety. An additional advantage of this process is the possibility of automating operation to a large extent. The standard has been prepared on the basis of experience gained with pressure-operated modules, i.e. filtration from a pressurized filter vessel to t
11、he external circuit. Since little experience has been obtained with other types of module, it is not possible at the moment to draw any conclusions on how far the process descriptions may also apply to other modules. DIN 19643 consists of the following Parts, under the general title Treatment of wat
12、er of swimming pools and baths: null Part 1: General requirements null Part 2: Combinations of process with fixed bed filters and precoat filters null Part 3: Combinations of process with ozonization null Part 4: Combinations of process with ultrafiltration Further parts may be added to this standar
13、d in future. In order to ensure that the requirements set down in this standard are met, and bearing in mind economic aspects, it is recommended that only experienced specialist companies with appropriate references be commissioned to plan, build and install the treatment facilities. Furthermore, ef
14、fectiveness of the treatment should be checked at regular intervals by experienced staff. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN (and/or DKE) shall not be held responsible for identifying any or all such patent rights
15、. DIN 19643-4:2012-11 4 1 Scope This standard, in conjunction with DIN 19643-1, applies to the treatment of water of swimming pools and baths by process combinations which include ultrafiltration. It also applies to therapeutic pools. 2 Normative references The following documents, in whole or in pa
16、rt, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 19643-1:2012-11, Treatment of water of swimmi
17、ng pools and baths Part 1: General requirements DIN 19645, Treatment of spent filter backwash water from systems for treatment of water of swimming pools and baths DIN 38409-7, German standard methods for the examination of water, waste water and sludge Parameters characterizing effects and substanc
18、es (group H) Part 7: Determination of acid and base-neutralizing capacities (H 7) DIN EN 15031, Chemicals used for treatment of swimming pool water Aluminium-based coagulants DIN EN 15075, Chemicals used for treatment of swimming pool water Sodium hydrogen carbonate DIN EN 15362, Chemicals used for
19、treatment of swimming pool water Sodium carbonate DIN EN 15797, Chemicals used for treatment of swimming pool water Iron-based coagulants DIN EN 15798, Chemicals used for treatment of swimming pool water Filter media DIN EN 15799, Chemicals used for treatment of swimming pool water Powdered activate
20、d carbon DIN ISO 9277, Determination of the specific surface area of solids by gas adsorption BET method DIN EN ISO 6878, Water quality Determination of phosphorus Ammonium molybdate spectrometric method DIN EN ISO 10304-1, Water quality Determination of dissolved anions by liquid chromatography of
21、ions Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulphate DIN EN ISO 15681-1, Water quality Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) Part 1: Method by flow injection analysis (FIA) DIN EN ISO 15681-2, Water
22、 quality Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) Part 2: Method by continuous flow analysis (CFA) DIN 19643-4:2012-11 5 DVGW W 213-5, Filtrationsverfahren zur Partikelentfernung Teil 5: Membranfiltration (Filtration methods for particle removal Pa
23、rt 5: Membrane filtration)1)Leitlinie zur hygienischen Beurteilung von organischen Materialien im Kontakt mit Trinkwasser (KTW-Leitlinie) (Guideline for the hygienic assessment of organic materials in contact with drinking water)2)3 Terms and definitions For the purposes of this standard, the terms
24、and definitions given in DIN 19643-1 and the following apply. 3.1 dead end mode DE mode operating mode in which all the water being processed is passed through the filter membrane without recirculation 3.2 flux or filtrate flux volume of filtrate passing through the membrane per unit of time in rela
25、tion to the membrane area (e.g. l/(m2 h) 3.3 fouling accumulation of matter on the membrane surface caused by microbial growth (biofouling) or particle deposits (fouling), and which can reduce the permeability of the membrane (clogging) 3.4 preservation treatment applied to the membranes whenever op
26、eration is interrupted in order to maintain their usability until filter operation is recommenced 3.5 membrane semi-permeable, partially porous, partially homogeneous separation layer of organic or inorganic material with symmetrical or asymmetrical structure 3.6 membrane filtration filtration proce
27、ss in which the physical separation of components is effected by the ability of at least one component of the mixture being separated to pass through the membranes practically without obstruction, while the other components are completely or partially retained 3.7 module ready-to-install and fully-o
28、perable unit comprising one or more membrane elements 3.8 permeability filtrate flux in relation to the pressure head across the membrane Note 1 to entry: Permeability changes with temperature and is specified with reference to this, e.g. in l/(m h bar) at 20 C. 1) Obtainable from: Wirtschafts- und
29、Verlagsgesellschaft Gas und Wasser mbH, Postfach 140151, 53056 Bonn. 2)Source: Umweltbundesamt (German Federal Environment Agency, Internet: http:/www.uba.de). DIN 19643-4:2012-11 6 3.9 protective filter prefilter installed upstream of the ultrafiltration plant in order to separate particles which m
30、ight clog or damage the membrane 3.10 rinsing process for cleaning membranes that is repeated at short intervals in order to restore the membrane permeability, which tends to decrease over time 3.11 transmembrane pressure TMP pressure head acting across the membrane. Is equal to the difference betwe
31、en the pressure on the raw water side and the filtrate side 3.12 ultrafiltration UF membrane filtration process using membranes with pore sizes of 0,05 m to retain dissolved, suspended or emulsified higher-molecular components Note 1 to entry: The main purpose of ultrafiltration is to separate ( 99,
32、99 %) particles, e.g. bacteria, parasites and viruses from the filtrate. 4 Principles of the process combinations In the primary stage, dissolved colloidal impurities are destabilized by flocculation using aluminium and/or iron(III) salts, and orthophosphates are precipitated. For this process, the
33、pH value of the raw water is kept within a range consistent with the type of flocculant used. In the second stage, part of the organic contamination, either in real solution or colloidal form, is adsorbed by activated carbon. Following this, the mixture of iron(III) and/or aluminium phosphate and ir
34、on and/or aluminium hydroxide and colloids, as well as any contaminated activated carbon, is removed by ultrafiltration. The filtrate is chlorinated and fed to the pool or bath. Furthermore, this process combination can be supplemented by ultraviolet radiation (see 5.4.3). The maximum load capacity
35、factor k is 1,0 m-3, which is equivalent to a supply water volume of 1,0 m3per person. 5 Process stages 5.1 Acid neutralizing capacity adjustment 5.1.1 General To achieve satisfactory flocculation, the acid neutralizing capacity (KS4,3 as defined in DIN 38409-7) of the raw water shall be adjusted to
36、 a given minimum value, unless the acid neutralizing capacity of the filling water is high enough to preclude that of the raw water from dropping below the minimum value. This can be achieved by adding an aqueous solution of sodium carbonate or sodium hydrogen carbonate to the raw water using a feed
37、er. 5.1.2 Compounds used to adjust acid neutralizing capacity a) Sodium carbonate (soda), as in DIN EN 15362; b) sodium hydrogen carbonate, as in DIN EN 15075; c) calcium carbonate, in solid form, as in DIN EN 15798 (to be used as filter medium). DIN 19643-4:2012-11 7 5.1.3 Minimum acid neutralizing
38、 capacity value a) When applying the process combination for bathing facilities other than spa pools (bubbling pools) with their own treatment facility, KS4,3shall not be less than 0,7 mol/m3; b) when applying the process combination for spa pools (bubbling pools) with their own treatment facility,
39、KS4,3shall not be less than 0,3 mol/m3; c) when using flocculants with a basicity3) 65 %, the acid neutralizing capacity can be adjusted to KS4,3 0,3 mol/m3, as opposed to the value stated in a). 5.1.4 Testing the acid neutralizing capacity After the reagents added have been thoroughly mixed, the ac
40、id neutralizing capacity of the raw water shall be determined to check for compliance with the specified minimum values. The value shall be determined weekly and the results documented in the logbook. 5.2 pH value adjustment The pH value shall be adjusted as specified in DIN 19643-1. 5.3 Flocculatio
41、n 5.3.1 General After the acid neutralizing capacity and pH value of the water have been adjusted, the flocculant shall be added continuously, uniformly and proportionally to the water using a feeder. This is also valid for partial load operation, where necessary. The flocculant shall be quickly and
42、 thoroughly mixed with the water directly at the feed point. This can be achieved, for example, by locating the flocculant feed point upstream of the circulation pump. The reaction time up to when the water enters the ultrafiltration module should be at least 5 s, with the flow velocity of the water
43、 not exceeding 1,5 m/s. Deviations from this rule are only permitted if proof of the specified effectiveness of the filtration system is provided by analysis. 5.3.2 Flocculants a) Aluminium sulfate, as in DIN EN 15031; b) aluminium chloride hexahydrate, as in DIN EN 15031; c) sodium aluminate, as in
44、 DIN EN 15031; d) aluminium hydroxychloride or aluminium hydroxychloride sulfate, as in DIN EN 15031; e) iron(III) chloride hexahydrate, as in DIN EN 15797; f) iron(III) chloride sulfate solution, as in DIN EN 15797; g) iron(III) sulfate, as in DIN EN 15797; h) basic aluminium chloride (polyaluminiu
45、m chloride), PAC, as in DIN EN 15031. 3) Basicity is a measure of the pre-neutralization of a product and is defined as: % basicity = (m/3n) x 100 %, where m is the molar quantity of OH-ions and n is the molar quantity of Al3+ions. DIN 19643-4:2012-11 8 5.3.3 Minimum quantity of flocculant to be add
46、ed a) When aluminium salts are used, a minimum quantity of 0,05 g/m3(equivalent to 1,85 mmol/m3), as Al, shall be added; b) when iron salts are used, a minimum quantity of 0,1 g/m3(equivalent to 1,78 mmol/m3), as Fe, shall be added; c) when mixed products are used, a minimum quantity of 1,85 mmol/m3
47、, in relation to the sum of iron and aluminium components, shall be added. The manufacturer shall state the iron and aluminium concentrations. The correct operating of the dosing feeders shall be ensured. Furthermore, dosing pumps shall be checked regularly, at the latest during maintenance or servi
48、cing work, by measuring the feed volume. The results of the inspection shall be documented in the logbook. Daily flocculant consumption shall be recorded in the logbook so that correctness of the settings and dosage can be verified. The values thus obtained shall be used to adjust the dosage quantit
49、y to the flow rate. 5.3.4 Checking the flocculant dosage The correct performance of the flocculation process shall be checked by verifying conformity to the filtration requirements (see Table 2). Whenever the system is put into operation or the flocculant is changed, the effectiveness of the flocculation stage shall be verified by measuring the iron and/or aluminium concentrations upstream and downstream of the filtration stage. 5.4 Eliminating disinfection by-products 5.4.1 Adsorption by powdered activated carbon 5
