EP1681108B1 - Fahrzeug und Verfahren zum Reinigen von Wasserversorgungssystemen - Google Patents

Fahrzeug und Verfahren zum Reinigen von Wasserversorgungssystemen Download PDF

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Publication number
EP1681108B1
EP1681108B1 EP06075085A EP06075085A EP1681108B1 EP 1681108 B1 EP1681108 B1 EP 1681108B1 EP 06075085 A EP06075085 A EP 06075085A EP 06075085 A EP06075085 A EP 06075085A EP 1681108 B1 EP1681108 B1 EP 1681108B1
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EP
European Patent Office
Prior art keywords
water supply
water
dispensing
supply system
coupling
Prior art date
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Active
Application number
EP06075085A
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English (en)
French (fr)
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EP1681108A1 (de
Inventor
Sebastiaan A.M. Asselman
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0325—Control mechanisms therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0326—Using pulsations
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00—Details of machines or methods for cleaning hollow articles
    • B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/024—Details of apparatuses or methods for cleaning pipes or tubes by creating a shock wave in the cleaning liquid

Definitions

  • the invention relates to a vehicle and its use in a method for cleaning water supply systems, especially for the control of legionella contamination, in particular in water supply systems of buildings.
  • a chemical bactericide can for instance be supplied to the water supply system, or the system can be rinsed.
  • a plan is drawn up with which a particular manner of control is chosen, whereupon a treatment is carried out during which the required equipment is connected to the contaminated water supply system.
  • a different form of control still proves necessary, control has to be started all over again.
  • contamination can still subsist.
  • a washing vehicle in accordance with the preamble of claim 1 for cleaning a water supply pipe of a building to remove deposits, scales and rust stuck inside the water supply pipe.
  • the vehicle is configured to dispense alternatively compressed water and compressed air.
  • a pressurized closed flow cleaning system comprising a series circuit with a heating unit, a storage tank, a pump and a chemical injection unit, while in the series circuit a bypass circuit is provided around the heating unit.
  • Fig. 1 shows a diagram of an installation in a cleaning vehicle.
  • the installation has a supply coupling 10 for tap water and a dispensing coupling 120 for dispensing processed water to a water supply system to be treated.
  • the installation further comprises a heating unit 12, a storage tank 13, a hydrophore 14, a chemical injection unit 15, a compressed air pump 16a and a discharge pump 140.
  • the heating unit is, for instance, a diesel-fired "hotbox" with a power to heat 25 liter of water per minute to a temperature of 125°C.
  • Storage tank 13 has, for instance, a capacity of 300 litres.
  • Discharge pump 140 may be a membrane pump which is preferably driven by compressed air from compressed air pump 16a (via a further duct not shown).
  • the installation is arranged in a series of bypass groups, containing the heating unit, the storage tank 13, and the chemical injection unit 15, respectively.
  • the installation contains a pipe system connecting supply coupling 10 to the dispensing coupling 120 via, successively, coupled in series, a non-return valve 11, an entrance valve 100, the bypass group with the heating unit 12, the bypass group with the storage tank 13, hydrophore 14, the bypass group with chemical injection unit 15 and an exit valve.
  • entrance valve 17c is coupled between an entrance of the bypass group and an entrance of chemical injection unit 15.
  • Exit valve 19c is coupled between an exit of chemical injection unit 15 and an exit of this bypass group.
  • Bypass valve 18c is coupled between the entrance and the exit of this bypass group.
  • Fig. 2 illustrates the operation of the vehicle 20, when cleaning a water supply system to be treated in a building 22.
  • the vehicle preferably a trailer
  • supply coupling 10 is connected to an exit 24 of the public water system.
  • the water supply system to be treated is uncoupled from the public water system, for instance with a mains 26.
  • Dispensing coupling 120 is connected to a central connection 28 on the water supply system to be treated (that is to say to a connection from whence the entire water supply system can be reached, for instance from a branch directly behind the mains).
  • the valves of the bypass groups enable switching between a number of different configurations without needing, to that end, to couple or uncouple hoses.
  • the following table gives an overview of the function of a number of possible configurations. 1 Thermal disinfection using storage tank 2 Thermal disinfection without using storage tank 3 Thermal disinfection using storage tank and air 4 Cold rinsing using storage tank 5 Cold rinsing without using storage tank 6 Cold rinsing using storage tank and air 7 Chemical cleaning using storage tank 8 Chemical cleaning without using storage tank 9 Chemical cleaning using storage tank and air 10 Thermal plus chemical cleaning with storage tank and air 11 Thermal plus chemical cleaning without storage tank/with air 12 Thermal plus chemical cleaning without storage tank or air 13 Thermal plus chemical cleaning with storage tank/without air 14 Draining the pipe system to be treated 15 Draining installation in vehicle
  • Supply of air is preferably carried out in bursts, by each time opening air valve 16a. Draining is carried out by opening discharge valve 130 and activating discharge pump 140.
  • the water supply system to be treated is held in a position of standstill for preferably 48 hours and thereafter it is measured whether the control has had the desired effect.
  • a bactericide can be used. The time allowed for acting depends on the selected agent and the local circumstances, but is, for instance, between three and six hours.
  • the bactericide is added to the water by chemical injection unit 15, while a desired average dose is set by injecting, with an adjustable frequency, standard doses in the water flow by chemical injection unit 15. In steps wherein no bactericide is dispensed, the bypass group with chemical injection unit 15 is bypassed to prevent remainders of bactericide from contaminating the dispensed water.
  • thermal disinfection When rinsing after chemical control, again, use is made of thermal disinfection, at least temporarily. It has appeared that in this manner, last remainders of bacteria and/or nutrient soil can be removed. Generally, this will take up less time than rinsing out the chemical bactericide and that is why it is preferred to switch to unheated water when the thermal disinfection is finished.
  • the use of the storage tank 13 depends on the size of the water supply system to be treated. With small systems, the capacity of heating unit 12 can be sufficient to directly provide the required water flow at the desired temperature. In that case, storage tank 13 is preferably bypassed, unless sufficient heated water is present in storage tank 13 for other reasons. With larger systems, for dispensing heated water, first, a buffer stock of heated water is build up in storage tank 13, whereupon the water is dispensed.
  • a simplified treatment of legionella control can be chosen when it appears, for instance, that dispensing heated water for the water supply system involved is impossible or undesired.
  • heating unit 12 can be bypassed and use can be made of intensive chemical treatment.
  • chemical treatment it may appear, under simple circumstances, that chemical treatment is not necessary so that thermal treatment suffices. Under more complicated circumstances, more steps, in particular repetitions of the steps mentioned, can be required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Claims (8)

  1. Ein Reinigungsfahrzeug (20) für Reinigungswasser-Versorgungssysteme, wobei das Reinigungsfahrzeug (20) ausgestattet ist mit einer Versorgungskupplung (10) für das Versorgungswasser zum Fahrzeug und einer Verteilerkupplung (120) für die Wasserverteilung vom Fahrzeug (20) zu einem zu behandelnden Wasserversorgungssystem, wobei das Fahrzeug (20) von der Versorgungskupplung (10) zur Verteilerkupplung (120) mit Folgendem versehen ist: einem Kreislauf, der sukzessive einen Speichertank (13), einen Hydrophor (14) und ein wahlweise aktivierbares Luftzuführungsmittel (16a) enthält, die parallel zu diesem Kreislauf mit der Verteilerkupplung (120) gekoppelt sind; der Kreislauf umfasst ein Heizgerät (12) zwischen der Versorgungskupplung (10) und dem Speichertank (13) sowie ein Chemikalieneinspritzaggregat (15) zwischen dem Hydrophor (14) und der Versorgungskupplung (120); im Kreislauf sind des Weiteren wahlweise aktivierbare Bypasskreise (17a-c, 18a-c, 19a-c) um das Heizgerät (12), den Speichertank (13) bzw. das Chemikalieneinspritzaggregat (15) vorhanden.
  2. Ein Reinigungsfahrzeug nach Anspruch 1, wobei jeder Bypasskreis (17a-c, 18a-c, 19a-c) mit einem ersten und einem zweiten Ventil (17a-c, 19a-c) zwischen jeweils einem Eingang und einem Ausgang des Bypasskreises (17a-c, 18a-c, 19a-c) im Kreislauf und einem Eingang und einem Ausgang entweder am Heizgerät (12), Speichertank (13) oder dem betreffenden Chemikalieneinspritzaggregat (15) ausgestattet ist, und der Bypasskreis (17a-c, 18a-c, 19a-c) mit einem dritten Ventil (18a-c) in einer Bypass-Verbindung zwischen dem Eingang und dem Ausgang des Bypasskreises (17a-c, 18a-c, 19a-c) versehen ist.
  3. Ein Reinigungsfahrzeug nach einem der vorhergehenden Ansprüche, das des Weiteren mit einer Austragspumpe (140) versehen ist, die parallel zu besagtem Kreislauf und dem Luftzuführungsmittel (16a) zur Verteilerkupplung (120) gekoppelt ist.
  4. Ein Reinigungsfahrzeug nach Anspruch 3, wobei die Austragspumpe(130) eine druckluftbetriebene Membranpumpe ist, die vom Luftzuführungsmittel (16a) angetrieben wird.
  5. Ein Reinigungsfahrzeug nach Anspruch 3, wobei das Fahrzeug (20) als ein Anhänger ausgelegt ist.
  6. Eine Methode für die Behandlung eines Wasserversorgungssystems, die dadurch gekennzeichnet ist, dass ein Fahrzeug (20) nach einem der vorhergehenden Ansprüche an einen Ort des Wasserversorgungssystems gefahren wird, das Wasserversorgungssystem von der öffentlichen Wasserversorgungsanlage getrennt wird, die Versorgungskupplung (10) an der öffentlichen Wasserversorgungsanlage angekoppelt wird und die Verteilerkupplung (120) am Wasserversorgungssystem angekoppelt wird, woraufhin durch die wahlweise Aktivierung der Bypasskreise (17a-c, 18a-c, 19a-c) verschiedene Schritte für die Behandlung des Wasserversorgungssystems ausgeführt werden.
  7. Eine Methode nach Anspruch 6, wobei die Behandlung des Wasserversorgungssystems die folgenden Schritte umfasst, die durch die wahlweise Aktivierung der Bypasskreise ausgeführt werden:
    (a) die Verteilung von Wasser mit einer Temperatur von mindestens 60 (sechzig) Grad Celsius über die Verteilerkupplung (120) an das zu behandelnde Wasserversorgungssystem;
    (b) Ablass des zu behandelnden Wasserversorgungssystems über die Verteilerkupplung (120);
    (c) die Verteilung von Wasser, das ein chemisches Bakterizid enthält, über die Verteilerkupplung (120) in das zu behandelnde Wasserversorgungssystem;
    (d) Einwirkenlassen des Bakterizids über einen zuvor festgelegten Zeitraum;
    (e) die Verteilung von Wasser mit einer Temperatur von mindestens 60 (sechzig) Grad Celsius über die Verteilerkupplung (120) an das zu behandelnde Wasserversorgungssystem mit periodischen Druckluftpulsen, wodurch das zu behandelnde Wasserversorgungssystem gespült wird.
  8. Eine Methode nach Anspruch 7, die des Weiteren die folgenden Schritte umfasst:
    - Messung der Wassertemperatur während Schritt (e) an mindestens einer Entnahmestelle;
    und
    - daraufhin, wenn die Temperatur mindestens 60 (sechzig) Grad Celsius erreicht hat, Umschaltung auf das Spülen mit unerhitztem Wasser und Druckluftpulsen über die Verteilerkupplung (120);
    - nachdem praktisch alle chemischen Bakterizide aus dem zu behandelnden Wasserversorgungssystem herausgespült sind, Verteilung von Wasser mit einer Temperatur von mindestens 60 (sechzig) Grad Celsius über die Verteilerkupplung (120) in das zu behandelnde Wasserversorgungssystem.
EP06075085A 2005-01-13 2006-01-13 Fahrzeug und Verfahren zum Reinigen von Wasserversorgungssystemen Active EP1681108B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1028018A NL1028018C2 (nl) 2005-01-13 2005-01-13 Voertuig en werkwijze voor het reinigen van waterleidingstelsels.

Publications (2)

Publication Number Publication Date
EP1681108A1 EP1681108A1 (de) 2006-07-19
EP1681108B1 true EP1681108B1 (de) 2010-08-11

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ID=36121321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06075085A Active EP1681108B1 (de) 2005-01-13 2006-01-13 Fahrzeug und Verfahren zum Reinigen von Wasserversorgungssystemen

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EP (1) EP1681108B1 (de)
AT (1) ATE477063T1 (de)
DE (1) DE602006016027D1 (de)
ES (1) ES2350758T3 (de)
NL (1) NL1028018C2 (de)
PT (1) PT1681108E (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7606458A (nl) * 1976-06-15 1977-12-19 Meko Holland B V Inrichting voor het automatosch reini- gen van een op een drankvoorraadvat aan te sluiten leidingensysteem en een daarmede verbonden tapor- gaan omvattende inrichting, alsmede werkwijze voor het automatisch reinigen meg behulp van een derge- lijke inrichting.
US5540784A (en) * 1994-09-23 1996-07-30 United Laboratories, Inc. Pressurized closed flow cleaning system
FR2755961A1 (fr) * 1996-11-19 1998-05-22 Air Liquide Sante Dev Sa Procede et dispositif de traitement des eaux chaudes sanitaires par l'ozone
JP2002136939A (ja) * 2000-11-06 2002-05-14 Toshimi Honda 一般建築物や集合住宅等の給水管の洗浄車

Also Published As

Publication number Publication date
EP1681108A1 (de) 2006-07-19
DE602006016027D1 (de) 2010-09-23
ES2350758T3 (es) 2011-01-26
ATE477063T1 (de) 2010-08-15
PT1681108E (pt) 2010-11-17
NL1028018C2 (nl) 2006-07-19

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