EP2154300A1 - Station d'eaux usées - Google Patents

Station d'eaux usées Download PDF

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Publication number
EP2154300A1
EP2154300A1 EP08014542A EP08014542A EP2154300A1 EP 2154300 A1 EP2154300 A1 EP 2154300A1 EP 08014542 A EP08014542 A EP 08014542A EP 08014542 A EP08014542 A EP 08014542A EP 2154300 A1 EP2154300 A1 EP 2154300A1
Authority
EP
European Patent Office
Prior art keywords
main channel
station according
wastewater
collecting space
shaft body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08014542A
Other languages
German (de)
English (en)
Other versions
EP2154300B1 (fr
Inventor
Bernhard Kessel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kessel AG
Original Assignee
Kessel AG
Kessel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kessel AG, Kessel GmbH filed Critical Kessel AG
Priority to AT08014542T priority Critical patent/ATE539203T1/de
Priority to PL08014542T priority patent/PL2154300T3/pl
Priority to ES08014542T priority patent/ES2376397T3/es
Priority to EP08014542A priority patent/EP2154300B1/fr
Publication of EP2154300A1 publication Critical patent/EP2154300A1/fr
Application granted granted Critical
Publication of EP2154300B1 publication Critical patent/EP2154300B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

Definitions

  • the invention relates to a wastewater station according to the preamble of patent claim 1.
  • known wastewater station can be the two backwater valves after removing the housing cover and the pump to maintain and clean. Since the pump is switched off in a backwater but only to a relatively high level of waste water in the initial section of the main channel, and pumping a backflow stop small wastewater batch directly into the drain, only a weak flow dynamics and can accumulate in the backwater settling and adhering contaminants endanger the reliability relatively quickly.
  • the wastewater station can only dispose of waste water that enters via the inlet. Wastewater from other processes must be disposed of separately.
  • a lifting system is installed in such a way that wastewater is always pumped away via the backpressure level by means of a pump. Normally, therefore, there can be no backflow situation upstream of a lifting plant upstream. As a result, there is a safety risk in lifting systems because in the event of a power failure or mechanical pump damage, wastewater can no longer be disposed of via the backflow level.
  • a wastewater station is installed in the backflow area so that the wastewater does not have to be brought up. As long as there is no backflow situation, the wastewater station is more reliable than a lifting plant, because even in the event of a power failure or mechanical damage to the pump, wastewater flows freely into the sewerage system.
  • the invention has for its object to provide a wastewater station of the type mentioned, which is compact despite a large capacity of the collection space and reliable despite long maintenance intervals.
  • the predominantly designed for installation in a basement of a building wastewater station has laterally separated from the main channel collecting space with considerable capacity, which is collected in a backwater there a large amount of wastewater, so that the frequency of the pump start-up cycles and the switch-on cycles are long.
  • Long switch-on cycles improve the self-cleaning of the wastewater station, as the large volume to be pumped produces an intensive flow dynamic with a high content of kinetic energy.
  • the purge barrier forms a natural barrier to the collection base, and favors proper flow in the main channel.
  • the collecting space is expediently arranged on one side of the main channel. But it can also be provided communicating plenums on both sides of the main channel.
  • the straight cleaning threshold also falls in the direction of flow in the main channel the slope corresponding obliquely.
  • the flow dynamics is intensified when the purge threshold is limited by portal walls of a provided between the main channel and the plenum lateral portal whose width is less than the clear width of the plenum.
  • the entire suction area of the pump is placed in the plenum at a distance above the plenum bottom to ensure that in normal operation without backwater in the main channel flowing wastewater does not pollute the intake even with gushing strong seizure.
  • the reliability of the wastewater station in a backwater can also be increased by the fact that between the inlet of the shaft body and the cleaning threshold in the main channel a, preferably automatic, backflow stop is arranged.
  • This backflow stopper closes when the collection chamber is sufficiently filled and prevents that sewage flows back into the inlet from the collecting space until the pump is switched on.
  • This backflow obstruction arranged upstream of the collecting space could be opened by means of a manually or motor-operated actuator accessible from the maintenance space and forcibly kept open until a backflow occurs so as not to impair the flow in the main duct during normal operation. It is pointed to related training details DE-A-197 57 743 and EP-A-0 307 698 same applicant.
  • the shaft body is substantially circular, and the main channel extends eccentrically along an outer wall side or in the middle of the shaft body.
  • the plenum receives despite the compact in the flow direction in the main channel shaft body the desired large capacity.
  • the main channel and the collecting space are open at the top, compartments enclosed by delimiting margins below a wastewater-free maintenance space of the shaft body.
  • the maintenance room is located above an intermediate wall in the shaft body. On the intermediate wall, the boundary edges forming intermediate frame can be placed. Lids are detachably attached to the perimeter edges to keep the maintenance room free of wastewater.
  • first and second covers are provided above the main channel and a third cover above the collecting space.
  • a pump housing of the pump can be arranged sunk in the third cover.
  • the pump has a discharge nozzle, which extends in the maintenance space from the pump housing down to the second lid and bypasses the backflow stop downstream.
  • the discharge nozzle may be integrally formed with the second lid to reduce the number of sealing areas.
  • a non-return valve is arranged in the discharge nozzle, which prevents a backwater, that wastewater is pressed by the pump into the plenum.
  • the delivery rate of the pump automatically opens the non-return valve during a backflow.
  • the non-return valve also forms a safeguard against vermin.
  • the lids are fixed with latches, which, preferably, without tools are manually releasable.
  • an optional mechanically lockable backflow stop can be arranged on the second cover from the maintenance room from manually or motor-operated locking member at least forcibly closing the bypassed by the discharge nozzle backwater.
  • This backwater stopper is either closed in case of danger after alerting the operator by hand, or automatically by motor in response to a generated by a sensor or control command.
  • a connection for a pump control and / or a sensor system is provided in the third cover, which serves for operation control of the wastewater station.
  • the discharge nozzle has a part pivotally arranged on the pump housing and an integral part with the second cover, which are detachably connected via a clamping lever coupling.
  • the cocking lever coupling can be conveniently operated with one hand to separate the parts. After pivoting the one, on the pump housing pivotally mounted part of the pressure nozzle can be either only the pump housing or this with the third cover, or remove the second cover.
  • the backflow seals are arranged in insert parts which are removably inserted into the compartments of the shaft body and secured in position by the cover or the intermediate frame.
  • the reliability of the wastewater station can also be increased by the fact that the intensive flow dynamics of the relatively large wastewater charge pumped out of the collecting space cleans the functional area of the backflow closure between the cleaning threshold and the drain.
  • the mouth of the pressure nozzle is placed pointing from above into the functional area, so that the strong flow rate shoots relatively long in the functional area and eliminates impurities efficiently.
  • the mouth may be directed farther downstream to avoid wicking the backwater stopper.
  • the backflow stopper may even be forced to remain open so as not to interfere with normal flow. Only with a backwater does he close automatically or is he forced to close.
  • a pressure line or a pressure line knee can be connected to the outlet of the shaft body upwards. It is expedient to provide a local constriction in order to temporarily accelerate the flow and favor a suction effect.
  • At least one is connected to an integrated into the wastewater station drain inlet run to the main channel or to the plenum.
  • wastewater from the drain can be disposed of normally and in a backwater using the pump and needs in the basement no drain to be installed separately and connected separately to the sewer.
  • a separate backflow trap should be provided in the inlet branch or in the drain, and optionally also a trap.
  • the inlet string can be connected upstream of the main backflow stopper at different locations in the wastewater station, expediently outside to the inlet or within the main channel or even the collecting space.
  • the inlet string can have a snorkel placed in the shaft body, which leads into a top wall of the collecting space or of the main channel and is connected to the drain having an inlet grate in a lid of the waste water station.
  • a suitable for fäkalalien inconvenience wastewater sewer S points in Fig. 1 a substantially circular shaft body 1 with a molded-in inlet 2 and a flush with this outlet 3, between which extends below a partition wall Z of the shaft body 1 with a full spherical cross-section (Vollberme) and slight slope extending main channel 4.
  • the intermediate wall Z separates wastewater-carrying areas of the wastewater station S from an overlying, wastewater-free maintenance area W.
  • the main channel 4 is for example offset to the side between the center of the shaft body 1 and the outer wall.
  • a large-sized collecting space R is provided, in which a pump P with recessed pump housing 6 is arranged.
  • the wastewater station S is, for example, between a sewage inlet 14 (pipe string) and a secondary sewer system 13 (pipe string) installed in the ground and upwards, for example by means of a in Fig. 2 sealed Abdichtflansches 23 sealed to a ring attachment 12 and closed by a cover, not shown, (optionally with an interposed attachment).
  • communicating collecting spaces could be provided on each side of the then approximately central main channel 4.
  • the wastewater station S is with at least one inlet strand E and only indicated flow B z. B. in the lid (not shown) of the shaft body 1 combined.
  • the inlet strand E is in Fig. 1 formed as a snorkel 7 and, for example, in a connection 8 to the collecting space R out.
  • the snorkel 7 is connected via a not shown, appropriate automatic, backwater valve either directly to the drain B or to an insert in the flow B.
  • In the insert part of the drain B may additionally odor trap or another functional built-in part 36, 36 'may be contained, for example a bell trap or a Klenk flap or the like.
  • Wastewater flowing in via the inlet branch E is disposed of via the main channel 4.
  • the bell trap works with standing in it wastewater.
  • the Klenk valve has a wastewater receiving volume and is ballasted against a substantially horizontal sealing seat from below, as long as the receiving volume is not filled with waste water. Only then does the Klenk flap move temporarily away from the seat, waste water is allowed to pass through, and the flap closes automatically again after the sewage attack.
  • An in Fig. 1 indicated inlet 5 is used to connect a pump control and / or sensor (not shown) for the operation of the wastewater station S in a backwater situation.
  • the first cover D1 closes on a boundary edge 16 (FIG. Fig. 1 and Fig. 2 ) a first, open-top compartment A1.
  • a backflow valve R2 preferably removable, arranged, for example, a self-closing in backwater damper with a sealing seat as an insert.
  • the second cover D2 closes a second compartment A2, in which between the collecting space R and leading to the drain 3 main channel part a backflow valve R1 (for example, a check valve 18 with a sealing seat 19 as insert 20) is included.
  • the third cover D3 closes a third compartment A3, and defines together with the compartment A3 the collecting space R.
  • the pump housing 6 is installed in the third cover D3, the pump housing 6 is installed.
  • the backflow stop R2 could be opened by means of an actuator (not shown) accessible in the maintenance space, manually or by motor, and kept open until a backflow occurs.
  • the collecting space R ( Fig. 5 ) extends along the length of the first and second compartments A1, A2 and has a permanently open flow connection between the backflow shutters R1, R2 with the main channel 4, and to the portion of the main channel downstream of the backflow stopper R1 a flow connection monitored by the pump P in the event of backwater via a discharge nozzle 10 of the pump housing 6.
  • the discharge nozzle 10 consists of a pressure nozzle part 10a on the pump housing 6 and a pressure nozzle part 10b, which is formed integrally with the second lid D2, and runs like a knee from top to bottom.
  • the part 10b leads eg to a functional area F ( Fig. 1 and 2 ) of the backflow stopper R1 and may, for example, even be directed directly into the functional area F, To clean or keep clean the backflow stopper during pumping by flow forces.
  • the two pressure nozzle parts 10a, 10b are connected to one another via a clamping yoke coupling which can be operatively operated with one hand and which is separable via a clamping yoke 17.
  • the pressure nozzle part 10a is after loosening the clamping yoke coupling and as in Fig. 3 indicated, expediently, on the pump housing 6 (FIG. Fig. 3 ) about a pivot axis 29 of the pressure nozzle part 10b pivoted away so that either the pump housing 6 or the second cover D2 with the pressure nozzle part 10b in the case of maintenance is conveniently removed upwards or are.
  • centering and fitting elements 11 may be provided for a ring attachment 12.
  • the lids D1, D2, D3 are expediently fixed with manually releasable latches 40, either directly on the intermediate wall Z and thus on the shaft body 1, or on a ( Fig. 2 ) on the intermediate wall, sealed intermediate frame 30 (see also Fig. 5 ).
  • the at least one collecting space R is, as mentioned, laterally next to the main channel 4.
  • the pump P sucks in a backwater up to a selectable damming height from the collecting space R (suction area 28 in Fig. 3 above the plenum bottom), and conveys via the discharge nozzle 10 transversely to the flow direction in the main channel 4 from the collecting space R to the downstream of the backflow stopper R1 and in the sequence 3.
  • a locking member (locking lever 9) is pivotally mounted in the embodiment shown , which is pivoted by hand or by a motor, not shown, to mechanically block the backflow stop R1 in the closed position (in Fig.
  • a locking lug 22 is pressed onto a locking extension 21 of the check valve 18 in the interior of the second lid D2.
  • the locking lever 9 and the locking lug 22 could have a means of attack to open the flap 18 forcibly and keep open, for example, until a backwater occurs and the sensor / pump control responds, which also closes the flap 18 or emits a warning signal.
  • the inserts 20 with the backflow closures R1, R2 are inserted from the top with removed covers D1, D2 and are secured in position by fixing the cover D1, D2 or from the intermediate frame 30.
  • the inserts 20 are removed after removal of the cover D1, D2 for maintenance purposes or interchangeable.
  • the plenum bottom 25 is located higher than the main channel bottom, and continuously inclined obliquely downward to the main channel 4.
  • the collecting space bottom 25 leads to an approximately straight cleaning and rejection threshold 26, which runs into the rounding of the main channel 4 via a rounded edge 28, is bounded by portal walls 27 of a portal connecting the collecting space R to the main channel 4, and a barrier forms between the main channel 4 and the plenum base 25, from which the plenum base 25 continuously sideways and optionally outside of the portal and in the flow direction in the main channel 4 rises (in the manner of an inlet funnel to the portal).
  • the purging threshold 26 is ( Fig.
  • the cleaning threshold 26 is located at an altitude with respect to the main channel bottom, which ensures that no or hardly any wastewater enters the collecting space R under normal flow conditions (rejection function).
  • the collecting space R serves, in the event of a backflow, in which the backflow stopper R1 automatically closes via the sensor / pump control and / or is mechanically closed by hand, continue to flow in a relatively large volume from the inlet 2 by the self-opening or open backflow stopper R2 to collect until the sensor / pump control, not shown, responds and sets the pump P in motion, the wastewater from the collection chamber R, bypassing the closed backflow stopper R1 through the drain 3.
  • the sensors can release both open backflow shutters R1, R2, or even forcibly close the backflow stopper R1 during backwater.
  • a check valve R3 as the third backwater of the wastewater station S included which opens automatically during operation of the pump P, however, is with the pump off and prevents back-pressure of waste water until the pump P is turned on.
  • Fig. 3 It can be seen that the entire suction region 28 of the pump P is placed at a distance above the collecting space bottom 25, such that a wastewater surge does not contact the suction region 28.
  • the ring attachment 12 bridges the height difference between the sealing flange 23 and the ground level, or even carries a not shown another essay or optionally with the drain B and an inlet grate (not shown) provided lid (not shown) of the wastewater station S.
  • Fig. 4 shows that the pressure nozzle part 10b may be directed directly into the functional area F of the backwater stopper R1, the insert part 20 is secured in position either by the second cover D2 and / or the frame 30.
  • the covers D1, D2, D3 are expediently equipped with seals.
  • the locking lug 22 is raised, so that the backflow stopper R1 can open and close automatically, depending on the flow conditions or a backwater condition.
  • Fig. 5 shows in a modified shaft body 1 with opposite flats in the circumference placed in the plenum R intake region 28 of the omitted in this view pump, and a part of the pressure nozzle part 10a. Further, the three compartments A1, A2, A3 are clearly recognizable because the covers D1, D2, D3 are removed in this view, so that the backflow shutters R1, R2 can be maintained or removed, and also the collecting space R can be cleaned and maintained ,
  • the wastewater station S ( Fig. 1 ) between the sewage inlet 14 and the sewer system 13, which form a sloping through, back-endangered sewage line installed.
  • the pump P is only turned on when a backwater condition occurs and incoming wastewater threatens to overfill the collection space R.
  • the wastewater station S could also promote wastewater upwards.
  • Fig. 2 may be connected to the drain 3, a pressure line pipe 15 or pipe elbow up.
  • Fig. 2 are dashed with E 'further possibilities for connecting the inlet strand E indicated.
  • E ' further possibilities for connecting the inlet strand E indicated.
  • One possibility E ' is to let the inlet branch E' through the first cover D1 between the backflow closures R1, R2.
  • Another possibility E ' is to lead the inlet branch E' in the inlet 2 or before this.
  • the integration of the process B into the wastewater station S offers the important advantage of not having to install separate processes in the installation area of the water station S in a cellar if there is or is a need, but to use the wastewater station S for this purpose.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Water Treatment By Sorption (AREA)
EP08014542A 2008-08-14 2008-08-14 Station d'eaux usées Active EP2154300B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT08014542T ATE539203T1 (de) 2008-08-14 2008-08-14 Abwasserstation
PL08014542T PL2154300T3 (pl) 2008-08-14 2008-08-14 Stacja ścieków
ES08014542T ES2376397T3 (es) 2008-08-14 2008-08-14 Estación para el control de aguas residuales.
EP08014542A EP2154300B1 (fr) 2008-08-14 2008-08-14 Station d'eaux usées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08014542A EP2154300B1 (fr) 2008-08-14 2008-08-14 Station d'eaux usées

Publications (2)

Publication Number Publication Date
EP2154300A1 true EP2154300A1 (fr) 2010-02-17
EP2154300B1 EP2154300B1 (fr) 2011-12-28

Family

ID=40097426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08014542A Active EP2154300B1 (fr) 2008-08-14 2008-08-14 Station d'eaux usées

Country Status (4)

Country Link
EP (1) EP2154300B1 (fr)
AT (1) ATE539203T1 (fr)
ES (1) ES2376397T3 (fr)
PL (1) PL2154300T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447429A1 (fr) 2010-10-27 2012-05-02 Kessel AG Fermeture de retenue
DE102012102225A1 (de) 2012-03-16 2013-09-19 Aco Severin Ahlmann Gmbh & Co. Kg Rückstausicherung für Abwasseranlagen

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701026A (en) * 1951-07-31 1955-02-01 Elra F Howe Flood control system
DE2714626A1 (de) * 1977-03-30 1978-10-12 Kaiserslautern Guss Armatur Vorrichtung zur aufnahme und ableitung von abwasser aus tiefliegenden raeumen
DE3112141A1 (de) * 1981-03-27 1982-10-07 Fa. Helmuth Dallmer, 5760 Arnsberg "revisionsschacht fuer eine gebaeude-abwasserleitung"
DE8306460U1 (de) 1983-03-07 1983-06-16 Buderus Ag, 6330 Wetzlar Ablaufgehaeuse in abwasserrleitungen
DE3313458C2 (de) 1983-04-11 1986-04-03 Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand Gmbh & Co, 6750 Kaiserslautern Hebeanlage für fäkalienhaltige Abwässer
EP0307698A1 (fr) 1987-09-17 1989-03-22 Bernhard Kessel Trousse comportant un tuyau de nettoyage pour des conduites d'égout continue
DE29518542U1 (de) * 1995-11-22 1996-01-11 Gerteis, Ferdinand, 79713 Bad Säckingen Vorrichtung gegen Abwasser- und Kanalrückstau
EP0736636A1 (fr) * 1995-04-06 1996-10-09 Firma BIOPLAN Ingenieurgesellschaft für Planen und Bauen in der Wasser- und Abfallwirtschaft m.b.H. Puits de regard avec au moins un anneau de puits
DE19757743C1 (de) 1997-12-23 1999-02-11 Bernhard Kessel Rückstauverschlußvorrichtung
EP1035262A2 (fr) * 1999-03-08 2000-09-13 Kessel GmbH Dispositif de levage d'eaux usées
DE202004017607U1 (de) * 2004-11-12 2006-03-16 Kessel Gmbh Einsatzteil und Ablaufsystem

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701026A (en) * 1951-07-31 1955-02-01 Elra F Howe Flood control system
DE2714626A1 (de) * 1977-03-30 1978-10-12 Kaiserslautern Guss Armatur Vorrichtung zur aufnahme und ableitung von abwasser aus tiefliegenden raeumen
DE2714626C2 (de) 1977-03-30 1986-07-03 Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand, 6750 Kaiserslautern Vorrichtung zur Aufnahme und Ableitung von Abwasser aus tiefliegenden Räumen
DE3112141A1 (de) * 1981-03-27 1982-10-07 Fa. Helmuth Dallmer, 5760 Arnsberg "revisionsschacht fuer eine gebaeude-abwasserleitung"
DE8306460U1 (de) 1983-03-07 1983-06-16 Buderus Ag, 6330 Wetzlar Ablaufgehaeuse in abwasserrleitungen
DE3313458C2 (de) 1983-04-11 1986-04-03 Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand Gmbh & Co, 6750 Kaiserslautern Hebeanlage für fäkalienhaltige Abwässer
EP0307698A1 (fr) 1987-09-17 1989-03-22 Bernhard Kessel Trousse comportant un tuyau de nettoyage pour des conduites d'égout continue
EP0736636A1 (fr) * 1995-04-06 1996-10-09 Firma BIOPLAN Ingenieurgesellschaft für Planen und Bauen in der Wasser- und Abfallwirtschaft m.b.H. Puits de regard avec au moins un anneau de puits
DE29518542U1 (de) * 1995-11-22 1996-01-11 Gerteis, Ferdinand, 79713 Bad Säckingen Vorrichtung gegen Abwasser- und Kanalrückstau
DE19757743C1 (de) 1997-12-23 1999-02-11 Bernhard Kessel Rückstauverschlußvorrichtung
EP1035262A2 (fr) * 1999-03-08 2000-09-13 Kessel GmbH Dispositif de levage d'eaux usées
DE202004017607U1 (de) * 2004-11-12 2006-03-16 Kessel Gmbh Einsatzteil und Ablaufsystem

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447429A1 (fr) 2010-10-27 2012-05-02 Kessel AG Fermeture de retenue
DE102012102225A1 (de) 2012-03-16 2013-09-19 Aco Severin Ahlmann Gmbh & Co. Kg Rückstausicherung für Abwasseranlagen

Also Published As

Publication number Publication date
PL2154300T3 (pl) 2012-05-31
ES2376397T3 (es) 2012-03-13
ATE539203T1 (de) 2012-01-15
EP2154300B1 (fr) 2011-12-28

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