DD298965A5 - WASTE WATER TREATMENT PLANT WITH DEVICE FOR REMOVING LEGIONELLA PNEUMOPHILA - Google Patents

Abstract

The invention relates to a service water Erwaermungsanlage consisting of a cold water supply, a water heater, a hot water tank, a charge pump and a service water distribution line with taps, regardless of fluctuating tap volumes a sufficient temperature or residence time reaching the hot water distribution line hot water quantities as possible ensures that the water heater, the water heater and the charge pump in Zapfruhe form a closed water circuit with a relatively high disinfection temperature, and the supply line of the hot water storage is connected to a heat exchanger as a back-cooler and this in turn to the service water. Fig. 3 {hot water Erwaermungsanlage; Cold water supply line; water heaters; heat exchanger; Recirculating Chiller; Service water storage device; Charge pump; at Zapfruhe closed water cycle; high disinfection temperature; Water distribution line}

Description

For this 12 pages drawings

The invention relates to a service water heating system, bestoiiend from a cold water supply line, a Wassererwä ^r mer, a service water storage, a charge pump and a Braiichwasser Vertoilungsleitung with taps.

Hot water warming plant cliosor odor Hähnor ari for (josso gobaudo, wio mehonhäusor, hotols, sick and plough homes, etc. Office houseor are soit langom in violfältigor style boknnnt on dio finishes on don soiton 1380 to 138Ί "pocketbook for hoizunfj and klimatochnik" Rocknogol / Sprongor 64th edition 1987 vorwioson., All this Systomo orfüllon their purpose, by allowing from Zapfstollon the withdrawal of hot water with oinor Tomporetur up to otwa 50 ° C. By mixing cold water can with a different gbStalteton Vontilon oologoll to the Zopfstollo gowünschto the water temperature Siimtlicho Systomo dor oingang's genus are characterized by gokonnzoichnot, that the probability contained in the Spoichor to avoid or reduce Voralkungon otwa oino maximum Tomporatur of 60 C, but possible t daruntor From Dom Wrauchwassor Spoichor this Wassor übor oino Vorbindungslcitung to a zontral pumped on Brauchwassor Vortoilungsloitung, are dono dious untorschiodlichen Zapfstollon angoschlosson. Between don pump and dom Spoichor is often to Sichorstollung oinor to don Zapfstollon pending hot water oino circulation pipe goschaltot.

Dioso hot water plants were fostgostollt wurclo at the earliest Mn11976 in oolom Hotol in Philadelphia, USA, where the ocular reunion ohemaligor Kriogsvotoranon of the First Woltkriogos took place.from 4000 Toilnohmorn orkrankton 182 Of this 29th dioso sad event, dioso cranhoit prefers its name "Legionolla pnoumophila." Logionollon are grnmmnogativo Stäbchonbaktorion, dio according to taxonomischon criteria oino own Familio (Logionollacoao) with the genus Logionclla repräsontioron.There are the species Logionella pnoumophila with 11 Serogruppon and 21 other species.Dio discovery woitoror Logionolla Spozies and -Sorogruppon is to orwarton.

From now extensive investigations (see "legionnaires" Boitrago to the oinos hygionischon Probloms of Seidel, Seober and Hässolbach Gustav Fischor Vorlag, Stuttgart / NowYork 1987 Soito 67 to 71) it is known that Wasserten, temperatures of 35 ⁰ C to 4O ⁰ C. This temperature high is often found in wastewater pretloiling salungon, circulating saloon, in showerhead, etc. For the control of the legionnules, conversions of the hot water heating system have been proposed essentially after:

A thermal disinfection by oino stufonwciso setting the tomporatur in the hot water Vortoilungsloitung to 70'C. Then been with the basement dos betroffondon Gobäudos starting systematically all consecutively dispensing tunnel goöffnot dom in buildings until the Maximaltompcratur between 65 ⁰ C and 70 ° C has been reached. All taps are closed again after diosor flushing.

Also, thermal disinfection boruhon on oinor raising the effluent temporaturon to 63 ⁰ C to 7O ⁰ C. All dia hot water heating systems and thormischen performed with them disinfections require a considerable Mohrbedarf of energy in the form of circulation and Ausströmungsvorlusto. Further, they are associated with an increased corrosion hazard, increased hard precipitation in the service water distribution line, pre-brewing risk, and premature maintenance of fittings and installation components. Furthermore, these proposals do not take into account the indispensable requirements of the German energy saving gospel, as well as the need for additional funding for the future increased use of heat from heat recovery, alternative energies and heat pump technologies. Besides the above-mentioned thermal water heating plants with thermal disinfection, those with chemical disinfection are also known. For this purpose, the cold water supply to the water heater with a switchable bypass connection with a two-pump port was acquired. It is dosed with sodium hypochlorite and hydrochloric acid for pH regulation. During the chemical disinfection, all hot water taps were regulated to oinon discharge of a certain discharge amount per minute, the chlorine content was measured trimotically with oinom indicator and dio pH values electromotically. Although this type of chemical disinfection with sodium hypochlorite (sodium hypochlorite) has been tried and tested in the area of smaller swimming pools, it is extremely dangerous in domestic hot water pipes because mixing with acids leads to the immediate formation of chlorine gas. Therefore, the existing regulations on drinking water supply only a small chlorine content in drinking water to protect consumers. And finally, its use in a service water supply line because of dor thus significantly increased risk of corrosion and leakage as consequential damage and any associated allergic skin reactions due to dissolved copper-nickel ions is not responsible.

Based on this state of the art, the invention has for its object to provide a enorgiowirtschaftliche service water heating system of the type mentioned, regardless of fluctuating Zapfmongen a sufficient temperature or residence time of reaching the domestic water Verteilungsloitung hot water quantities at the lowest possible kill temperature of Legionolla pneumophila guaranteed ,

This task is in Vorbindung with the genannton generic term inventun'isgemäß after a first alternative in that the water heater, the hot water tank and the charge pump at Zapfruhe form a closed water cycle with relatively high Desinfoktionstemperatur, the inflow of the domestic hot water storage with a heat exchanger as a recooler and this in turn is connected to the service water distribution line. As a result of this arrangement, all parts of the service water heating system required for the water heating have been thermally separated from the service water distribution line with its taps and any circulation lines. As a result, the domestic hot water to be heated can be disinfected within a regionally limited space of the entire plant before it enters the service water distribution line. Due to the Vorwoilzoit and the matching thermal Desinfoktionstemperatur of as short as possible below the Kalkablagerungstomporatur of 6O ⁰ C, this system is characterized by an extremely economical effectiveness in the absence of scalding risk and not increased maintenance costs for valves and system parts. For example, if 57.5 ⁰ C hot water circulated 24 minutes in the water circuit of the water heater according to the invention and stored, all of Legionella pneumophila are dead coils at a Abstorbegoschwindigkeit in the form of the D-value of 6 minutes. This D value indicates the decimal reduction peak at which the colony-forming units (CFU) of a bacterial population have been reduced by the order of magnitude of ten. After 24 minutes are at 57.5 ° Cca. 10 * CFU / ml dead. In principle, however, it is also possible to drive the above-described Brauchwasscr-Erwärmungsanungsanago within the closed at Zapfruhe water heating circuit with other temperatures. As particularly advantageous, it has been found that service water in the water cycle from the water heater, service water storage and charge pump in temporal and tomperaturniveaumäßigor dependence of

To circulate the Absterbeyoschwindigkoit the Loglonolla pnoumophila, bovor os about clon Rückkühlor In dio Bruchwassor Vortoilungsloitung pumpbor. Dnbol is energetically charged with heat recovery from the recooler by the Dutch water regulator Zuloituny.

Eino bosondors vortoilhnito formation of the invention is orziolt that zworschon dom Wassororwiirmor and dom Rrauchwassor Spoichor a dio Dosinfektionstomporatur in the Spoichor over (lon orfordorlichon period for dio Abstorbogoscli viiuligkoit the Logionolla pnoumophlla sichorstollondor buffer angnordnot is.The Puffor ontwodor as a separator DoluiUor or as in Brauchwassoi-Spoichor intogriorto Pufforzono from () obildot Dor Puffor becomes advantageous depending on the constant flow rate of the Lodopumpo clorart dimonsioniort, that the circulation of the Wassormonge in the Kroislauf of charge pump, Wassororwärmor, Puffor and Spoichor within oinos such Zeitraumos and boi oinom dorartigon Tomperaturnivoau it follows that it is there in the water-Spoichor golnngondo Wassor concerning the Legionella pnoumophila dosinfiziort.

In order to preheat the cold water boron from the cold water supply to the water borehole and thus make the domestic hot water plant economically viable, it is advantageously arranged between the water tank and the charging pool in an additional heat transfer tower, which is from a pipe Heating system or oinos with dent condenser oinor Wärmopumpo gokoppolton Hoizkroisos bcaufschlagbar is. In order to maintain the heat transfer facility of the water heater, it is also advantageous to have a water softening device between it and the Ladopumpo oil.

In a particularly advantageous Woitorbildung dor invention is dor Wärmorerwärmor provide with at least two separate heating coils, which are bouchschlagbar on its outside of the same Hoizmodium innorhalb dos Wassororwärmnrs. Thus, the water heater receives two gotronnto inlet and outlet plots, so that for decalcification the one plumbing coil can be used for each other to heat the water. Daboi changes only the accumulator of the accumulator, not jo (iocl) the tomporaturnivoau of the warm-water congo to be charged, whereby the spoichor for descaling jowoils oinor heating coil does not need to be put out of operation to wordon.

It is clear that more than just two heating coils can be arranged in a water heater. Each heating coil can be assigned either a separate odot odotot all heating coils oinor common Ladopumpo. After a second Altornativo the dor invention underlying liogondo Aufgabo in Vorbindung with dom oingangs mentioned genus project is solved ditß dor the Wassororwärmor, the Brauchwassor-Speichor and the Ladopumpo boi Zapfruho a closed water cycle for hot water boi Zapftomporatur bildon, woboi between dor Ladepumpo and Dom Wassererwarmer oin injector an ozone supply device, a reaction vessel and oin activated carbon filter are arranged one behind the other and the supply line of the hot water storage is connected to the Vertoilungsleitung. As a result, the water entering the tank is filtered out by orzing and the ozone surplus is filtered out by the activated carbon filter before the disinfectant hot water enters the hot water tank and from there into the pre-settlement tank.

In this case, it is advantageous to arrange a motive water pump in front of the injector of the ozone supply device and, between the latter and the charge pump, on the one hand, and the reaction vessel, on the other hand, a bypass line.

After a third Altornativo the problem underlying the invention in Vorgebindung with dom oingangs gonannton preamble inventively achieved in that the Wassororwärmor, dio hot water Spoichor and dio Ladepumpo boi Zapfruhe a closed water cycle for hot water boi Zapftomporrtur bildon, woboi before dor charge pump eino Chlordosierung- Device and between the supply line of the hot water storage tank and the process water distribution line oin activated carbon filter for dio dechlorination is arranged. By this arrangement, the dosinfizierende chlorine mixture, z. B. sodium hypochlorite (sodium hypochlorite) limited to the water cycle of water heating, whereas the dio water distribution line, the tap and zono oventuollsngeschlossono circulation line are kept free of the highly corrosive chlorine preconditioning.

According to a fourth alternative, the invention underlying task is in connection with the above-mentioned orfindungsgomäß solved by the Wassererwärmor, the hot water storage tank and the Ladepumpo at Zapfruhe a closed water cycle for hot water boi tapping temperature bildon, where aufDrucksoite the charge pump in service water Heating circuit a UV radiation device is arranged. According to a fifth alternative, the task underlying the invention is achieved in that either the above-described thermal disinfection with the above-described ozone supply device or with the above-described chlorine dehumidifying device or with the UV radiation device can be combined.

To support the disinfection measures in the process water heating circuit is advantageously arranged in the cold water Zuloitung oino UV radiation device for disinfection, which is parallolgcschaltet advantageous in the cold water supply line a Pufferbehä'ior and eino pump and the UV radiation device at Zapfruho to a Closed circuit are connected. For example, the buffer tank can take over 60% of the total amount of cold water for the takeover boi peak demand, while in the arrangement of two UV radiation devices with two feed pumps, for example, each about 20%, the entire amount of cold water in this cold water disinfection cycle can circulate.

Further advantageous arrangement and Ausgestaltungsmerkmalo of the invention can be entnohmbar from the claims. Some embodiments of the invention will be described below with reference to the drawings. Show

Fig. 1: a schematic representation of the service water heating circuit closed at Zapfruhe and desson

Separation of the hot water distribution line, Fig. 2: oine hot water heating system with thermal disinfection and a hot water tank with

integrated water heater, Fig. 3: a service water heating plant with thermal disinfection and one of the hot water tank

Separate water heater, Fig. 4: oino development of the service water heating system of Fig. 2 or 3 with a between the Brauchwassererwärmor and the domestic water SReicher arranged buffer tank and an additional domestic water heater for acting on secondary energy, such as district heating, heat pump cycles, etc. ,

FIG. 4 a shows the steam generator heating plant according to FIG. 4, but with the water softening device anstollo the additional heat exchanger carrier. FIG.

Fig. 5: a hot water heating milagomitoinorozon feeder in hot water reheating hot runner; Fig. 6: a brook water heating plant with iowoilsoinor chlorine lightening equipment in the process water warming frog and hot water pre-coral croaker;

Fig. 7: a hot water heating plant with a UV radiation device in the hot water reheating hot runner, Fig. 8: a hot water heating croquet with Pufforbohilltor and Spoichor sowio oin Wassororwärmor with zwoi

Heating coils, FIG. 9: the hot water heating frog of FIG. 8 with an additional water heater for topping up osmolarerio,

Fig. 10: oinon Wossororwärmor with intogriortor Pufforzono, Fig. 11: in dor Kallwassor Zuloitung odor dom Domestic hot water warming croquet vorgoscholtoton cold water cycle with oinom Pufforbohältor and zwoi to parallolgeschaltoton UV Strahlungsvorrichtungon.

According to the schematic representation of FIG. 1, the dhw-warehousing plant (1) consists of the hot water warming crocus (2) and the hot water vortoilorkrois (3) together, in Fig. 1 and subsequently in Figs. 2 to 6, respectively thick dash-dot systomgronzon gokonnzoichnot are.

Here are the Pfoilo (4) the Kaltwnssor Zuloitung, (5) the preheating of the Kaltwassors, (6) dio Dosinfoktion the heated hot water by Übortomporatur, ozonioron, Chlorioron or UV radiation and (7) dio Vorbindungsloitung between the flow passage between dom hot water - Warming Croquet (2) and Dom Hot Water Vortoilorkreis (3). In the process water vortoilorkrois (3), the pile (8) symbolizes the heating of the service water to botrytoma comporature to compensate for the circulation lore and the temperture fluctuation from the connection line (7) and the arrow (9) symbolizes the dhw distribution point to don / tap. Pickling cell (21).

This principle is boi don subsequently boschriobenon Ausführungon dor figures 2 to 7 wio follows realized, the water pipes (4, 7,9), dor dhw heating circuit (2), dor hot water Vortoilorkrois (3) sowio dio total hot water Erwärmungsanlago ( 1) jewoils with gloichen bow figures vorsohon are:

According to FIG. 2, via the cold water supply (4), the water to be redirected passes via the return cooler (10), the drain (11) into the spoiler (12), in which the water heater (13) is integrated. Boi Zapfruhe is about dio charge pump (14) in the recooler (10) preheated cold water in the circuit (15,12,16,14) boi dor jowoiligon Dosinfektionstemperatur, eg between 57.5 ⁰ C and 7O ⁰ C umgowälzt. When tapping so orhitzto Wassor from dom Speichor (12) on dio line (16) and (17) to the recooler (10), in dom it Znpftomperatur of eg 40 ⁰ C to 50 ⁰ C horuntorgokühlt is. Dio from the hot water to the recooler output (10) enthalpy is transferred to the over dio Kaltwassor-Zuloitung (4) horangeführto cold water with a temperature of 10 ⁰ C to 15 ⁰ C, which makes it for example to 30 ° C to 40 ⁰ C in the Loitung (11) is preheated. The in the recooler (10) to about 4O ⁰ C to 5O ⁰ C horuntorgokühlto sowio thermally dosed disinfected Wassor golangt then übor the line (18) and the Vorbindungsloitung (7) to the industrial water croaker (3), dor essentially from the process water Distribution line (9), a circulation pump (19), of a reheater (20) for balancing the circulation process so as to be composed of a plurality of taps (21).

In this, as well as in the figures to be described below, the pile or similar name indicates the flow direction of the respective fluid. In all of FIGS. 2 to 7, the overflow of necessary valves, slides, regulating devices, etc., which are not the subject of the invention, have been omitted.

In Fig. 3, the reservoir (22) is separated from the water heater (23). In the water-heating rocket (2) golangt via dio cold water supply line (4) to be heated hot water at a temperature of 1O ⁰ C to 15 ° C to the preheater acting as a recooler (10) don it via the line (11) a temperature of ι. B. 3O ⁰ C to 40 ⁰ C leaves and is pressed by the charge pump (14) in the water heater (23). From this passes through the Loitung (24) in the memory (22). Again, form the memory (22), the line (25), the charge pump (14), the Austronsorwärmor (23) and the line (24) at Zapfruhe a closed Kroislauf in which the hot water at a Dosinfoktionstaturatur of z. B. 65 ⁰ C is circulated. The supply of heat to the water heater (23) takes place as in the embodiment of FIG. 2 überord supply line (26). Dio charge pump (14) can be jowoils via a thermostat (27) on and off.

Once is tapped at the taps (21), nc arrived from dom memory (22) via line (25), the charge pump (14), the conduit (28) and the recooler (10) to about 38 C to 50 ⁰ C down-cooled hot water into the line (18) and via the connecting line (7) to the Z.isteilen (21) of the hot water Vertoi'ng line (9). A domesprochonde amount of cold water flows over the Kaltwassor Zuloitung (4) in the Wassererwärrnungs- Kroislauf (2). In the embodiment of Figure 4 is between the water heater (23) and the hot water Spoicher (22) a disinfection temperature in the Speichor (22) over the required period for the Absterbogeschwindigkoit the Legionella pneumophila sicherstellender buffer container (29).

However, the buffer tank (29) and the storage tank (22) can also be combined, according to FIG. 10 to be described, into a tank unit (30) with integrated buffer zone (31).

According to FIG. 4, an additional heat exchanger (32) is also arranged between the dome water heater (23) and the charge pump (14) via a supply line (33) from a district heating network, a heating system, a non-illustrated condenser of a heat pump or another comparable heat generator is boochschlagbar. By this additional heat exchanger (32) könnon still Sükundärenergien for the preheating of the cold water supply line (4) hinführton be used cold water, so that the heating of the service water to disinfection temperature designed by this external recovery is particularly economical.

From the charge pump (14) in the recooler (10) preheated cold water through the additional heat exchanger (32), the water heater (23) and the line (34) is pressed into the buffer (29), from dom it via the line (24 ) enters the memory (22). In this case, the buffer container (29) has the task, which is based on the lowest possible Desinfektionstomporatur of z. B. 57.5 ⁰ C to 6O ⁰ C, heated hot water with the time required for disinfection in the process water heating circuit (2) or (14,32, 23,34, 29, 24, 22,25) to keep, before passing it via the line (28), the recooler (10), the line (18) and the connecting line (7) to the hot water distributor circuit (3) and from there in the already described

Woiso arrives at Don Zapfstollon (21). Due to the low Dosinfoktionstoraturatur of boispiolswoiso 57.5 ⁰ C and 60 ° C in the hot water warming trois (2) clio Wärmoübortragung boointrilchtigondo Kalkablagnrungon vorzögort or even theoretically prevented, so that oino rogolrnäßigo decalcification on dor lnnonsoito the Wärmoübortragor (32) and (23 ) is not required.

The hot water heating plant (1) according to Fiy.4a untorsclioidot is from the jonigon according to Figure 4 by the elimination of the additional Wärmoübortragors (32), at dossonStollohintor the Ladopumpo (14) oine softening device (85) angoordnot. Lotztero keeps the hot water warming-up of lime-calcium-norungon, otherwise the heat-transfer coefficient (k) at the heat-transfer surface, as well as the quorum dor tube-loungungon vormindorn. In the domestic water heating plant (1) according to Fig. 5, the water heater (23), the domestic hot water tanker (22) and the ladüpi.nipo (14) boi Zapfruho oinon goschlossonon water cycle boi oinor hot water tempo.iature of boispiolswoiso 5OX wherebetween dor Ladopumpo (1Ί) and the Wassororwärmur (23) oino ozone feeding device (35), oin reaction vessel (36) and oin Aktivkohlofiltor (37) hinoroinandor nngoordnot bind and the flow line (18) dos Brnuchwassor Spoichors (22) practice the preliminary separation (7) with the hot water pre-settlement (9) is vorbundon. As a result, the topsoil of the cold water supply (<t), liorango-fedo, can be dosed in the ozone feeding device (35), in the porthole (36) roagioron and the grate -Ozone in the activated carbon filter (37) horausgozogon wordon, before the cold water passes through the duct (40) into the donor water heater (23) and via the duct (41) into the spoichor (22), from the dom os via the Loitung (25) in dom vorboschriobonon circulation is circulated, bovor os at tapping about the dio Loitung (18) from dom Wassororwärmungs-Kroislauf (2) subtracted and aborio Vorbindungsloitung (7) in dor boroits vorbeschriobonon Woiso over the Brauchwassor Vortoilungsloitung (9) to the Zapfstollon (21 ).

Fig. 6 shows the water heater (23), the sporewater spout (22) and the charge pump (14) boi Zapfruho oinon goschlossonon Water circuit for service water boi Dispenser, with front of the charge pump (14) oino Chlorine dosing device (42) and between the preliminary liquidation (43) of the hot water spout (22) and the loitungon (18, 7) or activated carbon filter (44) for dechlorination. Thus, the überord dio cold water Zuloitung (4) introduced Wassor by the chlorine dousing device (42) vorsotzt with sodium hypochlorite (Chlorobloicho), then in Wassororwärmor (23) on Zapf- or Spoichortomporatur of example 50 ⁰ C and boi Zapfruho over the line (45), the donor (22), the line (25), the din Ladopumpo (14) and the heater (23) circulated wordon. Before it is tapped via the line (43) vorWaßt the water vorwärungsungskroislauf (2) to the line (18) is made in Aktivkohlofiltor (44) oino dechlorination. To the chlorine dehumidifier (42), the chlorodosior pump (46) and a dioso-sputtering chloroborane (46 ') were used for the dhw warming (2) and the chlorine diorior pump (47) for the used water pretoril circuit (3) jodoch only at dor Erstdosinfoktion odor in bowufston Zwischondesinfektionen under monitoring of the taps (21) is set only sporadically in Botrieb and Anderston, especially when tap water, switched off. However, the chlorine dehydrator pump (47) may also blur the failure of the chlorine dehydrator (42). In this case, in the flow direction in front of the circulation pump (19) there is a chlorine brushless measuring device (48), and the chlorine chlorine pump (47) regulates the shut-off of the chlorine chlorine pump (47), so that the delivery line (47 ¹ ) with on the pressure side of the circulation pump (19) connected to the chlorine dehumidification device (50) can be set in and out of Botrieb.

Isi zwischon dor cold water ZuloiUing (4) and dom Wassererwärmor (23) arranged a UV radiation device (51) for Dosinfektion in the embodiment of FIG. Thus, the cold water drawn from the Kaltwassor Zuloitung (4) by dor charge pump (14) cold water is disinfected by UV radiation, bovor os via dio line (52) in the Wassororwärmor (23) and from there over dor line (53) in don Domestic water Spoicher (22) is pressed, from dom it over the Loitung (25) in the above-described circulation at Zapfruho is circulated. When tapped at don draw points (21) reaches the tapping temperature of z. B. heated at 50 ° C hot water from the memory (22) and the line (18) via the connecting line (7) for hot water Verto'ilungsloitung (9).

It is understood that the different principle of dor thormischen, the chemical (Chloriorung and Ozonicrung! And the physical (UV-radiation) disinfection can be combined with each other as needed.

A particularly advantageous water heater (23) is shown in Figures 8 and 9 dargostollt. These figures show the service water heating circuit (2) for a thermal disinfection which essentially corresponds to the discontinuation of the additional heat exchanger (32) of the arrangement of FIG. 4. In boidcn figures, the Wassororwärmor (23) is provided with two separate heating coils (54, 55) each with separate entrances (56, 57) and with separate outlets (58, 59). The invention also provides for the arrangement of further heating coils, 54, 55) in one and the same water heater (23). In the flow direction, the charging pump (60) is connected in front of the heating coil (54) and the charge pump (61) is connected in front of the heating coil (55). It is also possible to dispense with both charge pumps (60, 61!) And to replace them with a charge pump (62), which is indicated in phantom in the line (63) of Fig. 8. In addition, two storage tanks are parallel to the buffer vessel (29) (22) arranged to each other.

8 and 9, the buffer container (29) and the spoiler (22) of the left half of the image are still to be described by FIG. 10 with a buffer zone (31) and by additional storage (FIG. 22) replaces wordon.

By arranging a plurality of heating coils (54, 55) and one or more charge pumps (62; 60, 61) it is possible, while maintaining the heating operation by a heating coil, e.g. by the (55), dio each other heating coil (54) on its inside liberated Kalkbostandtoilen and flushed through without the Wassrrerwärmungskrois (2) put out of operation werrton must. In this case, the charging temperature of the memory (22) and buffer (P9) has been maintained, whereas the charging time is extended.

The hot water heating circuit (2) of Figure 9 differs from the vorherbeschriobenen of Figure 8 only characterized in that in the flow direction of cold water before the water heater (23) oin additional Wassoorwärmer (32) according to Figure 4 for the utilization of secondary energy of a nichtdargostellton Fernwärmonetzes, aor heating system or a coupled to the condenser of a heat pump heating circuit is connected upstream.

Dor in Fig. 10 represents the Spoichorbo-shed (30) with Pufforzono (31) wished oinon Brauchwessoroin- and exits (64). .Inline custom entry (65), ivvoi baffle (66) and oinon brook water exit (67), dosson with vorbuiulonos dip tube (GU) with oinom extension piece (69) vorsolibar and alternatively me boi (/ 0) nus dom Bohältor (30) may have been orchestrated.

Dor sanitary incineration (65) may also orsotzt orornotzt by don dhokorointritt (71). A'odord is the Bohaltor (30) with ninor Inspection and Purification Opening (72) vorsohon. Dor bosondoro Vortoil diosos Uuhalten (30) boruht in soinor Kompakthoit, gogonübor dor to Fig.4 boschriobonon gotronnton Arrangement of Pufforbohiiltor (29) and Spoichor (22). Here, too, through the inlet opening (65, 71) in Don Bohaltenor (30) golangondo, thermally to dosinfiziorendo hot water first vorzögort by dio Pufforzono (31) goloitot, bovor os onlwodor by dio Loitung (64) odor don hot water outlet (67) resp (70) dos Teuchrohros (68) ontnommon wordon.

For example, in order to be able to kill even safer gustalton and the logionollone already present in the cold water, bovor sio in golangon, the arrangement of FIG. 1 to FIG. 11 advantageous. In this case, water supply (4) or Pufforbo sheath (73) for overflowing water is arranged on the top of the water tank (74), dio with a conveyor pump (76) boi Zapfruhc oinon goschlossonon Kroislauf in dor Koltwassor supply (73). 4) form. In the direction of flow in front of the conveyor (76) is oin Foinfiltor (78) sowio oin Wassormongonggt t (80) odor oino timer (86) for switching oinor woitoron feed pump (77) and oinor woitoron UV radiation device (75) with Foim'iltor (75) 79) arranged. In the direction of flow, the UV radiation device (74, 75) bofindon jowoils oin Rückflußvorhindoror (81,82) sowio each oin solenoid valve (83,84).

It is self-evident that the pre-pregranobonon arrangements are also combined with one another, and thereby not only the Logionella pnoumophila, but also the Andorran group of groups may be rejected, if and as far as dioso of the pre-prebrachophone measures have been grasped.

Bozugszoichonlisto:

Brauchwassor-Erwärmungsnnlago 1 Brauchwassor-Erwärmungskroislauf 2 Brauchwassor-Vortoilerkrois 3 Cold water Zuloitung 4 Desinfoktionsoinrichtung 6 Vorbindi. between 2 and 3 7 Warming in of hot water 8th Service water separation 9 drycoolers 10 Water pipes in (2) 11,15,16,17,18,2 <t, 25,28,40,41,43,45,52,53,63 Storage 12.22 Wassorerwärmor 13.23 charging pump 14,60,61,62 Circulation pump in (3) 19 Nachwärmorin (3) 20 taps 21 Wa'rmomongonzuloitungon for (23,13) 26 thermostat 27 Buffer container <- 29 Bohhltereinliuit 30 Pufforzone 31 additional Wnrmoübfirtragor 32 Feedlocution for Sokundärcnorgion 33 Ozone supply means 35 reaction vessel 36 Activated carbon filter 37.44 Motive water pump in (2) 38 Bypass line in (2) 39 Chlorine dosing device 42.50 Chlordosierpumpe 46.47 supply line 47 ' Excess chlorine meter 46 ', 48 Regelloitung 49 UV radiation device 51 Heating coils in (23) 54.55 Entrance of (23) 56.57 Withdrawals from (23) 58.59 Industrial water discharge from (30) 64,67,70 Process water entry of (30) 64,65,71 baffle plate 66 dip tube 68 extension 69

Cleaning port 72 Buffer tank 73 UV radiation device 74, 7ö Pumping pump 76,77

Foin'iltor 78.79

Wassormongonmossgorät 80 Reflux pre-chloride 81.82 Solenoid valve 8.1,84 Curing device 85 Timer 86

Claims (24)

-i- 298 96ϋ Claims: 1. Hot water heating plant, bostohend from oinor Kaltwassor Zuloitung, oinom Wassororwärmer, einom hot water storage, oinor charge pump and einor hot water Vertoilungsleitung with taps, characterized in that the Worssorwärmer (13, 23), dor hot water Spoichor (12, 22) and the charge pump (14) boi Zapfruhe oine closed water cycle (13, 23, 12, 22,14) with relatively high Dosinfektionstomporatur form, the dio inlet (25) dos the hot water Spoichors (22) with oinom Wärmoübortragor (10) Recooler and this (10) in turn connected to the service water Vertoilungsloitung (9). 2. service water heating system according to claim 1, characterized in that the process water in the water cycle of water heater (13, 23), service water storage (12,22) and charge pump (14) in temporal and tomperaturniveaumäßii) ur depending on dor Absterbegeschwindigkoit the l. Egionolla pneumophila is circulated before os on the recooler (10) in the process water distribution line (9) is conveyed. 3. service water Erwärmungsanlago according to claim 1 or 2, characterized in that the dor recooler (10) of the cold water Zuloitung (4) is bouchschlagbar. 4. service water Erwärmungsanlago after a dor claims 1 to 3, characterized in that between the Wasserorwärmer (23) and the hot water tank (22) a dio disinfection temperature in the Spoicher (22) on the required Zoitraum for dio Absterbegeschwindigkeit the Legionella pneumophila sicherstellender Buffer (29, 31) is arranged. 5. service water Erwärmungsiinlage according to one of claims 1 to 4, characterized in that the buffer is formed either as a separate container (29) or as in the service water storage (30) Pufforzono integrated (31). 6. service water heating system according to one of claims 1 to 5, characterized yekennzelchnet that the service water heater (13) and the memory (12) either arranged in a container or as two spatially separated units (23, 22) in the water heating circuit (2) are arranged. 7. domestic water F.rwärmu gsanlage according to one of claims 1 to 6, characterized in that between the Wassorerwärmer (23) and the charge pump (14) an additional heat exchanger (32) is arranged for preheating, of a line (33) einos district heating network, a heating system or coupled to the condenser of a heat pump heating circuit can be acted upon. 8. service water heating system according to one of claims 1 to 7, characterized in that between the water heater (23) and the charge pump (14) a softening device (85) is arranged. 9. service water heating system according to one of claims 1 to 8, characterized in that the water heater (23) with at least two separate heating coils (54, 55) is provided, which can be acted upon on the outside of the same heating medium within the Wassererwärmers (23) , 10. service water heating system according to claim 9, characterized in that each heating coil (54, 55) either one separate (60, 61) or two heating coils (54, 55) is associated with a common charge pump (62). 11. service water heating system, consisting of a cold water supply line, a water heater, a hot water tank, a charge pump and a service water distribution line with taps, characterized in that the water heater (23), the hot water storage tank (22) and the Charging pump (14) at Zapfruhe form a closed water cycle for hot water at tapping temperature, wherein between the charge pump (14) and the water heater (23) an injector of an ozone supply device (35), a reaction vessel (36) and an activated carbon filter (37) in a row are arranged and the flow line (18) of the hot water storage tank (22) with the hot water distribution line (9) is connected. 12. service water heating system according to claim 11, characterized in that in front of the injector of the ozone supply device (35) has a drive water pump (38) and between this (38) and the charging pump (14) on the one hand and the reaction vessel (36) on the other hand, a bypass line (39) are arranged. 13. service water heating system, consisting of a cold water Zuloitung, a water heater, a service water storage, a charge pump and einor service water distribution line with Zapfstelion, characterized in that the Wassererwärmor (23), the hot water storage (22) and dio Charging pump (14) in Zapfruhe form a closed water circuit (22, 25, 23, 45) for service water boi tapping temperature, wherein in front of the charge pump (14) a chlorine metering device (42,46) and between the flow line (43) of the service water Storage (22) and the DHW Vertoi 'mgsloitung (9) an activated carbon filter (44) is arranged for dio Dochiorioriing. 14. service water Erwärmungsanlago according to claim 13, characterized in that in the Vorbindungsleitung (25) between the service water storage tank (22) and the charge pump (14) a chlorine excess Moßinstrumont (46 ') is arranged, from which a Chlordosiorpumpo (46 ) is controllable. 15. service water Erwärmungsanlago according to one of claims 1 to 14, characterized in that for the disinfection of the dor Brauchwassor Vortoilungsloitung (9), dom circulation heater (20), don Zapfstollen (21) and the circulation pump (19) formed circuit (9, 19, 20, 21) the pressure side of the circulation pump (19) is connected via a supply line (47 ') to a chlorine dior pump (47). 16. service water heating pad according to claim 15, characterized in that in the circulation circuit (9,19, 20, 21) a chlorine metering pump (47) regulating Chlorüborschuß -Mosgerät (48) is arranged. 17. domestic water heating system according to a dor claims Ί to 16, characterized in that the charge pump (14) via a arranged in the water cycle thermostat (27) off and is switched on. 18. service water heating system, consisting of eion Knltwnsser supply line, a water heater, a Brauciiwassor Spoichor, a charge pump and a service water Vertoilungsleitung with Zapfstelion, characterized in that the water heater (13, 23), the hot water storage (Ί2, 22) and the charge pump (14) boi Zapfruhe form a closed water cycle for tap water at Zapftomperatur, wherein on the pressure side of the charge pump (14) in the service water heating circuit (2) a UV radiation device (51) is arranged. 19. service water heating system according to one of claims 1 to 18, characterized by a combination of the features dor claims 1 to 10 with the features of claims 11,13 or 18th 20. Braucliwasser-heating system according to a dor claims 1 to 19, characterized in that in dio cold water Zuloitung (4) a UV radiation device (51) is arranged for disinfection. 21. Industrial water heating system according to one of claims 1 to 20, characterized in that in the cold water supply line (4) a Pufferbehalter (73) and at least one UV radiation device (74, 75) and at least one feed pump (76, 77) are connected to a boi Zapfruho closed circuit (4,73,76,77,74,75,4). 22. service water heating system according to claim 21, characterized in that in the flow direction in front of the feed pump (76) a fine filter (78) and before dom buffer tank (73) a water quantity meter (80) or a timer (86) for connecting a further Delivery pump '77) and a further UV radiation device (75) with fine filter (79) are arranged. 23. service water Erwärmungsanlago according to claim 21 or 22, characterized in that in the flow direction behind the UV radiation device (74,75) a backflow preventer (81,82) and a solenoid valve (83, 84) in the cold water supply line (4) are arranged. 24. Industrial water heating plant according to one of claims 1 to 23, characterized in that the brewing water distribution line (9) via a reheater (20) with the tap points (21) and this (21) via an intermediate line with a circulation pump (19) to the reheater (20) are connected.