EP1516682B1 - Procédé et appareil de nettoyage et de vidange pour un réservoir de traitement biologique d'eaux usées contenant des résidus solidifiés - Google Patents

Procédé et appareil de nettoyage et de vidange pour un réservoir de traitement biologique d'eaux usées contenant des résidus solidifiés Download PDF

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Publication number
EP1516682B1
EP1516682B1 EP04021191A EP04021191A EP1516682B1 EP 1516682 B1 EP1516682 B1 EP 1516682B1 EP 04021191 A EP04021191 A EP 04021191A EP 04021191 A EP04021191 A EP 04021191A EP 1516682 B1 EP1516682 B1 EP 1516682B1
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EP
European Patent Office
Prior art keywords
tank
suction
fluid
residues
residue
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.)
Expired - Lifetime
Application number
EP04021191A
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German (de)
English (en)
Other versions
EP1516682A1 (fr
Inventor
Carl Wagemann
Willem G.J. Gooren
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.)
Wagemann GmbH
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Wagemann GmbH
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Filing date
Publication date
Application filed by Wagemann GmbH filed Critical Wagemann GmbH
Publication of EP1516682A1 publication Critical patent/EP1516682A1/fr
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Publication of EP1516682B1 publication Critical patent/EP1516682B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • B08B9/08—Cleaning containers, e.g. tanks
    • 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
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays

Definitions

  • the present invention relates to a method and a corresponding device for cleaning and emptying a residue tank filled with solids-like residues of a biological treatment plant, such as those used for example in passenger trains.
  • US 4,234,980 describes a method according to the preamble of claim 1 and an apparatus according to the preamble of claim 6.
  • a pick-up tube By means of a pick-up tube, the dirt dissolved by the water is sucked off by means of a vacuum generated in the residue tank.
  • the vacuum pump is controlled there by the operator by hand.
  • a device for cleaning a tank which can be introduced into the tank.
  • This device incorporates a rotating part equipped with nozzles that allow water supplied from outside to be sprayed in different directions onto the residue at the bottom of the tank to remove the residue.
  • For sucking off the dissolved Residues are introduced into a pipe connected to a vacuum pump to extract the residue through the pipe.
  • the present invention is therefore based on the object to provide an improved method and an improved apparatus for flushing and emptying the residue tanks of a biological treatment plant, which can achieve improved cleaning results and allow automation of the cleaning and emptying process.
  • the present invention is based on the idea of running the purification process according to a defined scheme. Furthermore, it has been found that it is advantageous to continue to supply liquid during the aspiration of the softened and fluidized residues from the tank at least at the same time for suction and / or in suction pauses, since an improved cleaning result can be achieved thereby. In particular, this achieves an improved softening of the residues, and the mass discharged from the tank is thereby diluted so that it is easier to drain from the tank. Furthermore, overflowing of the tank can be prevented.
  • the inventive method can be automated in a simple manner, so that it no longer depends on a user, whether, how often, how long and in what order which steps of the process are performed. Based on empirical values, the time periods of the individual steps as well as other parameters, such as the pressure of the supplied medium, the amount of the supplied liquid and in particular the times and periods of the liquid supply can be adjusted during the suction process. Operating errors, which can lead to poor cleaning results in the known methods are thus largely excluded, and it can be ensured that the residue tank is always completely emptied and thoroughly rinsed.
  • the amount of liquid supplied and the amount of residue sucked off are detected, for which purpose suitable flow measuring means are provided, for example an inductive flow meter for measuring the solids coming out of the tank, and the supply of the liquid into the tank during suction it is controlled that the tank does not overflow.
  • suitable flow measuring means for example an inductive flow meter for measuring the solids coming out of the tank, and the supply of the liquid into the tank during suction it is controlled that the tank does not overflow.
  • the supply of the liquid in the first step and the supply of the high-pressure medium in the second step at least temporarily carried out simultaneously, in particular completely simultaneously and by supplying a liquid under high pressure, in particular water .
  • the first and second steps are thus summarized, so that the softening of the residues and the whirling occur substantially simultaneously.
  • This embodiment is used in particular when no supply of compressed air is available, but only a supply of water or another liquid under high pressure.
  • the supply line of the liquid and the supply line of the high-pressure medium (in particular air) by a single supply line, which is internally divided into two parts, realized.
  • the amount of residue extracted is detected, for which purpose suitable residue flow means are provided, and that the cleaning process restarts if a first predetermined amount of residue is not extracted during suction for a predetermined period of time. It can therefore be determined whether the softening and whirling up of the residues was sufficient so that the residues can be sucked off. If not enough residues have been softened and whirled up, this is automatically determined in this embodiment of the method according to the invention and leads to a new start of the process.
  • the detection result of the residue amount may be used to determine whether a second predetermined amount of residue has been sucked off, so that the tank is completely empty of residues.
  • the second residue quantity may be an empirical quantity determined in accordance with the tank size and possibly according to the cleaning interval.
  • the individual steps of the method according to the invention in a preferred embodiment are time-controlled and automatic, wherein the parameters of the timing can be adapted to the tank to be cleaned and emptied.
  • the device according to the invention and the method according to the invention can also be designed to be adaptive in order to set or improve the parameters independently according to learned empirical values.
  • the device according to the invention is designed as a mobile device, in which the liquid supply device comprises a liquid reservoir and the suction device comprises a vacuum pump.
  • a suitable device e.g. a compressor
  • the device according to the invention can also be configured as a stationary device, in which the liquid supply device has a liquid connection for connection to a liquid supply line and the suction device has a vacuum connection for connection to a vacuum line.
  • a plurality of such stationary devices may be arranged at intervals in trains in a cleaning hall for simultaneous emptying and cleaning of several bio-toilets of the train to be cleaned.
  • sensor means for determining whether the liquid supply means, the medium supply means and the suction device are connected to the tank.
  • the sensor means can be determined whether the device is correctly coupled to the tank, so that a faulty cleaning due to faulty or not connected lines, as is possible in the known device, can be excluded.
  • Such sensor means may be, for example, special signaling devices or simple grounding lines on the connecting lines.
  • Fig. 1 schematically shows a first embodiment of a device according to the invention for cleaning and emptying the residue tank of a biological treatment plant.
  • the residue tank is referred to, in which form after a certain time a solid and dry mass of toilet paper, feces and solids as residues and therefore must be emptied and cleaned from time to time.
  • the tank has three connections, namely a first connection 11 for connecting a compressed air line L, a second connection 12 for connecting a water supply W and a third connection 13 for connecting a suction line V.
  • the cleaning device 2 according to the invention has corresponding connections 21, 22, 23, to supply the stationary in the present embodiment configured cleaning device 2 with compressed air or water or to suck the residues.
  • input terminals 31 and 32 are provided, with which the cleaning device 2 can be connected to a compressed air supply line 51 and a water supply line.
  • a discharge port 33 is further provided, with which the cleaning device 2 can be connected to a vacuum supply line 53 at which a suction vacuum for sucking the residues from the tank 1 is provided.
  • the output terminals 21, 22, 23 are connected to the supply terminals 31, 32, 33 connected by controlled valves 41, 42, 43 with each other, which are controllable by means of a control device 24. Further, in the connecting line between the water supply inlet 32 and water outlet 22, a water flow meter 25 and in the connecting line between vacuum supply inlet 33 and vacuum outlet 23 a residue flow meter 26 is provided, with which the introduced into the tank 1 amount of water or discharged from the tank residue can be detected.
  • a first step S1 water is then first supplied via the supply line W into the tank 1.
  • the valve 42 is open for a predetermined period of time.
  • a second method step S2 which can overlap partially or completely with method step S1, compressed air is introduced into the tank 1 in order to fluidize the residue material softened by the introduced water.
  • the valve 41 is open for a predetermined period of time. Subsequently, the actual suction of the softened and stirred up residue material.
  • first (S3) is applied by opening the valve 43 for a predetermined period of time, the vacuum to suck a first portion of the softened and fluidized residue material.
  • the valves 42 and 43 are opened at the same time or in quick succession in order at least temporarily to simultaneously introduce water into the tank 1 and to suck off residue material from the tank. For example, first opens the valve 43 and shortly thereafter the valve 42. After both valves were opened for a period of time, then the valve 42 is first closed again before the valve 43 is closed.
  • step S5 it is provided that after a certain period of time after performing the method step S4, a check is carried out in step S5 whether any residue material has been sucked off or whether the sucked residue amount above R is above a certain limit value R1.
  • a check is carried out in step S5 whether any residue material has been sucked off or whether the sucked residue amount above R is above a certain limit value R1.
  • the method is restarted from the beginning with step S1, for which purpose, for example, even more water can be supplied in step S1 in order to soften the residue material again (and possibly better).
  • the suction process (S6) which can also be repeated several times, can be continued to effect complete emptying and cleaning of the tank 1.
  • step S7 a further test may optionally be provided, in which it is checked on the basis of the ascertained, sucked residue quantity R whether more than a second limit value R2 has been extracted for the residue quantity.
  • the second limit value R2 can be, for example, an empirically determined limit value which indicates, for a specific tank size, how many residues are contained, for example, after a certain period of use of the associated bio-toilet. It is thus determined in step S7 whether the tank is already completely emptied. If not, it is further exhausted (step S6 or S4); if the tank is empty, the process is ended.
  • step S5 For evaluating the amount of residue R sucked off in step S5 (and possibly S7), the control unit 24 evaluates the amount of residue measured by the residue meter 26.
  • the step S5 (and / or S7) can also be omitted completely, so that the suction operations S4 and S6 are carried out immediately one after the other, and possibly several times repeatedly.
  • the measuring signal of the water flow meter 25 can preferably also be evaluated (together with the amount of residue removed) in order to stop the supply of further water in good time before overfilling of the tank 1.
  • the durations of the individual steps of the cleaning process are predetermined when the process is carried out automatically, but can also be adapted individually depending on the tank to be cleaned. Furthermore, it can be provided that the control device 24 is capable of learning and, based on the measuring signals of the flow meters 25 and 26, learns over time which time periods and, for example, how many repetitions of the suction operations lead to an optimal emptying and cleaning result. Furthermore, the parameters can also be set regionally differently, since, for example, in some countries the proportion of toilet paper in the residue quantity differs from that in other countries, and thus the degree of residue residue may vary considerably depending on the country or region.
  • FIG Fig. 3 A further embodiment of a cleaning and emptying device according to the invention is shown schematically in FIG Fig. 3 shown.
  • the cleaning device 2 is designed as a mobile unit.
  • a single connection line WL for the supply of high-pressure water.
  • Tank 1 and cleaning device 2 have corresponding connections 17 and 27, respectively.
  • the under high pressure water is provided by the cleaning device 2 by means of a high-pressure pump 28 via the controllable valve 47, wherein Water supply a water tank 29 is provided.
  • the water tank 29 omitted if an external water supply is possible.
  • a supply connection (not shown) may be provided.
  • a vacuum pump 20 is further provided, with which a vacuum can be generated.
  • the residues are sucked from the tank 1 and discharged via the residue outlet 34 of the cleaning device 2, for example in an external tank or the drainage channel.
  • the cleaning process is essentially identical in this device as in the Fig. 1 shown embodiment. Only steps S1 and S2 (see Fig. 2 ) are summarized.
  • the water is also at high pressure in the extraction steps S4 and S6; However, it may also be provided that the pressure when feeding the water into the tank 1 is set lower.
  • sensors 18 are provided at the connections 13 and 17 of the tank, which signal the cleaning device 2 to correctly attach the connecting lines. For example, it may be provided that if the signal is missing, the cleaning process can not be started at all.
  • these sensors 18 are that a ground connection with a ground cable to the connecting lines, which are preferably designed as tubes, must be made. The cleaning device 2 is then signaled that all ground connections are made.
  • sensors which signal whether all connecting lines are in their correct rest position, preferably on the cleaning device 2, in the idle state.
  • suitable status displays can be provided which signal per connecting line whether a correct stowage is given.
  • Corresponding status lamps can also be provided for the correct mounting position.
  • the invention is used for cleaning debris tanks of organic toilets in passenger trains.
  • biological toilets or biological sewage treatment plants are also used elsewhere, for example in toilet trolleys at major events or in permanently installed toilets large event centers such as trade fair or concert halls.
  • the invention is basically applicable to all types of biological treatment plants, regardless of the purpose and scope of the biological treatment plant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Refuse Collection And Transfer (AREA)

Claims (12)

  1. Procédé de nettoyage et de vidange d'un réservoir de résidus (1) d'une station d'épuration biologique empli de résidus de type solides, comprenant les étapes :
    - introduction (S1) d'un liquide, notamment de l'eau, dans un réservoir en vue du ramollissement des résidus,
    - introduction (S2) d'un milieu sous pression élevée, notamment de l'air, dans le réservoir en vue du soulèvement par tourbillonnement des résidus, et
    - aspiration (S3, S4) hors du réservoir des résidus ramollis et soulevés par tourbillonnement,
    caractérisé en ce que du liquide supplémentaire est introduit dans le réservoir au moins par intermittence pendant l'aspiration et/ou dans les pauses d'aspiration et que les différentes étapes se déroulent de façon coordonnée dans le temps et automatique, les paramètres du nettoyage étant réglables.
  2. Procédé selon la revendication 1, caractérisé en ce que, pour l'aspiration des résidus ramollis et soulevés par tourbillonnement, au cours d'une première étape (S3), les résidus sont uniquement aspirés sans introduction supplémentaire de liquide dans le réservoir et en ce que, au cours d'une deuxième étape (S4), pendant l'aspiration, du liquide supplémentaire est introduit dans le réservoir, la deuxième étape pouvant être exécutée plusieurs fois.
  3. Procédé selon une des revendications précédentes, caractérisé en ce qu'on saisit la quantité de liquide introduit et la quantité de résidus aspirés et en ce que l'introduction de liquide dans le réservoir est commandée pendant l'aspiration de façon que le réservoir ne déborde pas.
  4. Procédé selon une des revendications précédentes, caractérisé en ce que l'introduction du liquide au cours de la première étape (S1) et l'introduction du milieu sous pression élevée au cours de la seconde étape (S2) s'effectuent de façon simultanée au moins par intermittence, en particulier de façon entièrement simultanée, et sont réalisées par introduction d'un liquide sous pression élevée, notamment de l'eau.
  5. Procédé selon une des revendications précédentes, caractérisé en ce qu'on saisit la quantité de résidus aspirés, le résultat de la saisie étant utilisé pour redémarrer le procédé lorsqu'une première quantité prédéterminée de résidus n'a pas été aspirée au cours de l'aspiration pendant une durée prédéterminée, ou pour mettre fin au procédé lorsqu'une deuxième quantité prédéterminée de résidus a été atteinte au cours de l'aspiration.
  6. Dispositif (2) de nettoyage et de vidange d'un réservoir de résidus (1) d'une station d'épuration biologique empli de résidus de type solides, comportant :
    - un dispositif d'introduction de liquide (22, 32 ; 27, 28, 29) destiné à introduire un liquide, notamment de l'eau, dans le réservoir en vue du ramollissement des résidus,
    - un dispositif d'introduction de milieu (21, 31 ; 27) destiné à introduire un milieu sous pression élevée, notamment de l'air, dans le réservoir en vue du soulèvement par tourbillonnement des résidus,
    - un dispositif d'aspiration (23, 33 ; 23, 20, 34) destiné à aspirer les résidus ramollis et soulevés par tourbillonnement hors du réservoir, et
    - un dispositif de commande (24) destiné à commander le processus de nettoyage et de vidange,
    caractérisé en ce que le dispositif de commande (24) est conçu de façon que du liquide supplémentaire du dispositif d'introduction de liquide soit introduit dans le réservoir au moins par intermittence pendant l'aspiration et/ou dans les pauses d'aspiration et en ce que les différentes étapes du processus de nettoyage et de vidange se déroulent de façon coordonnée dans le temps et automatique, les paramètres du nettoyage étant réglables.
  7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif d'introduction de liquide et le dispositif d'introduction de milieu sont conçus sous forme d'une seule conduite (WL), notamment en vue de l'introduction d'un liquide sous pression élevée, notamment de l'eau.
  8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que sont prévus des moyens de mesure de débit de liquide (25) en vue de la saisie du liquide introduit et des moyens de mesure du débit de résidus (26) en vue de la saisie des résidus aspirés et en ce que le dispositif de commande (24) est conçu pour commander l'introduction du liquide dans le réservoir pendant l'aspiration de façon que le réservoir ne déborde pas.
  9. Dispositif selon une des revendications 6 à 8, caractérisé en ce que sont prévus des moyens de mesure du débit de résidus (26) en vue de la saisie de la quantité de résidus aspirés et en ce que le dispositif de commande (24) est conçu pour commander le processus de nettoyage et de vidange de telle sorte que le résultat de la saisie est utilisé pour redémarrer le procédé lorsqu'une première quantité prédéterminée de résidus n'a pas été aspirée au cours de l'aspiration pendant une durée prédéterminée, ou pour mettre fin au procédé lorsqu'une deuxième quantité prédéterminée de résidus a été atteinte au cours de l'aspiration.
  10. Dispositif selon une des revendications 6 à 9, caractérisé en ce que le dispositif (2) est conçu sous forme de dispositif mobile et en ce que le dispositif d'introduction de liquide comporte un récipient de réserve de liquide (29) et le dispositif d'aspiration une pompe à vide (20).
  11. Dispositif selon une des revendications 6 à 10, caractérisé en ce que le dispositif (2) est conçu sous forme de dispositif fixe et en ce que le dispositif d'introduction de liquide comporte un raccord à liquide (32) pour raccordement à une conduite d'introduction de liquide (52) et le dispositif d'aspiration un raccord à vide (33) pour raccordement à une conduite à vide (53).
  12. Dispositif selon une des revendications 6 à 11, caractérisé en ce que sont prévus des capteurs (18) pour déterminer si le dispositif d'introduction de liquide, le dispositif d'introduction de milieu et le dispositif d'aspiration sont reliés au réservoir.
EP04021191A 2003-09-17 2004-09-07 Procédé et appareil de nettoyage et de vidange pour un réservoir de traitement biologique d'eaux usées contenant des résidus solidifiés Expired - Lifetime EP1516682B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10343243 2003-09-17
DE10343243A DE10343243B4 (de) 2003-09-17 2003-09-17 Verfahren und Vorrichtung zum Spülen und Entleeren eines mit feststoffartigen Rückständen gefüllten Rückstandtanks einer biologischen Kläranlage

Publications (2)

Publication Number Publication Date
EP1516682A1 EP1516682A1 (fr) 2005-03-23
EP1516682B1 true EP1516682B1 (fr) 2008-10-22

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EP04021191A Expired - Lifetime EP1516682B1 (fr) 2003-09-17 2004-09-07 Procédé et appareil de nettoyage et de vidange pour un réservoir de traitement biologique d'eaux usées contenant des résidus solidifiés

Country Status (3)

Country Link
EP (1) EP1516682B1 (fr)
AT (1) ATE411853T1 (fr)
DE (2) DE10343243B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2364893A1 (fr) 2010-03-12 2011-09-14 Schweizerische Bundesbahnen SBB Procédé et dispositif de vidange d'un récipient de matière solide

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US2638224A (en) * 1947-05-29 1953-05-12 Gorman Rupp Co Apparatus for cleansing septic tanks
US4214705A (en) * 1978-12-18 1980-07-29 Chemdet Sonic Systems, Inc. Apparatus for cleaning tanks
US4234980A (en) * 1979-05-16 1980-11-25 Aquatech, Inc. Apparatus for sewer cleaning and the like
DE3333481A1 (de) * 1983-05-20 1984-11-22 Renate 8700 Würzburg Lietz Verfahren und vorrichtung zur beseitigung von gemischen fester und fluessiger abfallstoffe
US4584726A (en) * 1984-07-09 1986-04-29 Kaiser Aerospace & Electronics Corp. Fluid operated waste tank servicing assembly
US4550453A (en) * 1984-08-02 1985-11-05 Marion E. Norman Compact, portable drain to empty and clean a recreational vehicle holding tank
FR2683495B1 (fr) * 1991-11-12 1993-12-31 Spimat Thp Systeme mobile de traitement des installations sanitaires d'une rame ferroviaire.
DE4434437C2 (de) * 1994-09-27 1996-10-02 Daimler Benz Aerospace Airbus Vakuumtoilettensystem in einem Flugzeug
US5657782A (en) * 1996-01-05 1997-08-19 Berning; Robert D. Septic tank flush
JP3168175B2 (ja) * 1997-05-13 2001-05-21 三岐通運株式会社 粉体輸送タンク車の粉体タンク室のクリーニングプラント

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2364893A1 (fr) 2010-03-12 2011-09-14 Schweizerische Bundesbahnen SBB Procédé et dispositif de vidange d'un récipient de matière solide

Also Published As

Publication number Publication date
DE10343243B4 (de) 2007-01-25
DE10343243A1 (de) 2005-08-04
DE502004008309D1 (de) 2008-12-04
ATE411853T1 (de) 2008-11-15
EP1516682A1 (fr) 2005-03-23

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