EP3263786B1 - Système d'égout sous pression et procédé - Google Patents

Système d'égout sous pression et procédé Download PDF

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Publication number
EP3263786B1
EP3263786B1 EP17177818.6A EP17177818A EP3263786B1 EP 3263786 B1 EP3263786 B1 EP 3263786B1 EP 17177818 A EP17177818 A EP 17177818A EP 3263786 B1 EP3263786 B1 EP 3263786B1
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EP
European Patent Office
Prior art keywords
pressure
pump
wastewater
sewer system
flushing
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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.)
Active
Application number
EP17177818.6A
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German (de)
English (en)
Other versions
EP3263786A1 (fr
Inventor
Jan Rucka
Ondrej Andrs
Jirí Kovár
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.)
Vysoke Uceni Technicke V Brne
Original Assignee
Vysoke Uceni Technicke V Brne
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.)
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Application filed by Vysoke Uceni Technicke V Brne filed Critical Vysoke Uceni Technicke V Brne
Priority to RS20210784A priority Critical patent/RS62026B1/sr
Priority to PL17177818T priority patent/PL3263786T3/pl
Publication of EP3263786A1 publication Critical patent/EP3263786A1/fr
Application granted granted Critical
Publication of EP3263786B1 publication Critical patent/EP3263786B1/fr
Priority to HRP20211003TT priority patent/HRP20211003T1/hr
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
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
    • E03F1/007—Pneumatic sewage disposal systems; accessories specially adapted therefore for public or main systems

Definitions

  • the invention concerns a method for automatic flushing of the pressure sewer system preventing its fouling by solidifying waste, as well as a pressure sewer system with automatic flushing providing this method.
  • the pressure sewer system is used where it is not possible to use a gravity sewer system no matter whether due to the terrain layout or transported wastewater type.
  • the pressure sewer system consists of pump sumps equipped with pumps, house connecting pressure pipes and the pressure main. Gravity house connecting pressure pipes from individual houses are routed into house pump sumps or pump sumps designed for a group of houses from where wastewater is pumped into the pressure main.
  • the pressure main is usually routed into the wastewater treatment plant. Water gathered in the pump sump is then transported by the pump into the house connecting pressure pipe and from here it is pumped over into the pressure main.
  • a combination of a pump sump and a pump connected to the pressure sewer system can be referred to as the pump unit for the purposes of this document.
  • the control of pumps installed in pump sumps on house connecting pressure pipes of the pressure sewer system can be executed on an as-needed basis by the operator who activates the pump once the pump sump is full.
  • the disadvantage of this solution is that the caretaker, or the pump sump owner must monitor the pump sump water level.
  • the pump sump water level can also be monitored by an automatic control unit which is connected both to the pump and a group of sensors installed in the pump sump for the water level monitoring. The sensors monitor the minimum wastewater level in the pump sump at which the pump must be switched off, the current wastewater level in the pump sump and the maximum wastewater level in the pump sump at which the pump must be switched on, or other optional wastewater levels where necessary.
  • This solution is known for example from the Czech utility design CZ 23662 U1 .
  • the known technical solution works automatically without the necessity of any control to be executed by the operator.
  • the automatic control unit is electrically connected to the sensors installed in the pump sump and to the pump.
  • the technical solution is described as a closed autonomous system.
  • the disadvantage of this solution is that in the case of an unexpected event concerning the pressure sewer system, such as an accident, reconstruction, etc., it is necessary to circumvent all the installed control units and control their operation on a temporary basis for example to interrupt the drawing of the pump sumps into the pressure sewer system when parts of the pressure main are being replaced.
  • the patent application AU 2012318281 A1 provides a solution that also includes a pump sump, a pump connected to the house connecting pressure pipe for the pump sump emptying, an automatic control unit electrically connected to the pump sump and sensors for measuring the pump sump water level.
  • the automatic control unit is connected, either by wire or in a wireless way, to a remote server by a communication interface.
  • the remote server is connected with several automatic control units which can be switched over from automatic to remote-controlled operation. Through the automatic control units the remote server can control the operation of the pumps installed in the pressure sewer system, so that, for example at the time of reconstruction of the pressure main, the pumps are not switched on and wastewater discharged at the construction site
  • the pipes of the pressure sewer system are built with the capacity given by the nominal flow rate in its individual parts (house connecting pressure pipes, the pressure main) with a relevant margin which is utilized in exceptional cases.
  • the nominal flow rate and nominal pressure refer to the values for which the house connecting pressure pipes and the pressure main are dimensioned according to the design.
  • the unused nominal capacity of the pressure sewer system pipes (in particular of the pressure main) is exposed, in particular as a result of the pump units emptying, to the continuous sedimentation and solidification of solid residues from wastewater at the bottom of the pressure main, which may ultimately result in the obstruction of the pressure sewer system pipes.
  • the task of the invention is the creation of the method and system for automatic flushing of the pressure sewer system effectively protecting the pressure sewer system pipes against obstruction, removing the solidifying sediments of waste contained in wastewater from the pressure sewer system on a regular basis, while it is desirable, from the point of view of investments, operation and maintenance, not to add any additional mechanical equipment to the system if possible.
  • the set task has been resolved by the method and system of automatic flushing of the pressure sewer system according to this invention.
  • the core of the invention is based on the fact that the activation of the pumps for the removal wastewater from the pump sumps is executed in a synchronised manner resulting in a temporary controlled change of instantaneous flow rate and instantaneous pressure in at least part of the pressure main.
  • the instantaneous flow rate during the controlled change corresponds to a required flushing flow rate of the given part of the pressure main for required flushing a majority of waste sediments in the relating segment of pressure main and the instantaneous pressure during the controlled change does not exceed the nominal pressure of the pressure main.
  • the removal of wastewater from the pump sumps is executed according to the order of the house connecting pressure pipe outlets into the pressure main and/or based on data concerning wastewater level in individual pump sumps in the flow direction from the farthest pressure pipe inlet towards to outlet end of the main. But wastewater level in individual pump sumps has priority.
  • the total volume of wastewater intended for the generation of a change in the instantaneous flow rate and instantaneous pressure is taken into account.
  • a reserve is created in at least some of the pump sumps before the generation of the controlled change in instantaneous flow rate and instantaneous pressure to accumulate wastewater and ensure the complete flushing of the given part of the pressure main.
  • the total volume which is necessary for flushing the respective pipe segment, refers to the sum of volumes in individual co-operating pump sumps. The total volume is determined according to the dimension and length of the pipe segment subject to flushing based using the calculation in the hydraulic simulation model of the low pressure sewerage network.
  • data concerning wastewater level in the pump sumps for planning the controlled change in instantaneous flow rate and instantaneous pressure is acquired from the sensors.
  • the data concerning wastewater level in the pump sumps is acquired from the database of records on water inflow into the pressure sewer system and wastewater outflow from the pressure sewer system for the previous period of time.
  • the data concerning wastewater level in the pump sumps is acquired from the database of records and/or weather forecasts. The correct estimate of wastewater level in the pump sumps is of key importance for the planning of flushing because if the volume of wastewater is insufficient, flushing is ineffective.
  • the invention comprises a pressure sewer system with automatic flushing.
  • the pressure sewer system with automatic flushing consists of the pressure main and at least two house connecting pressure pipes connecting at least two respective wastewater pump sumps to the pressure main.
  • the respective pump sumps are fitted with sensors for measuring the pump sump water level where each house connecting pressure pipe or pump sump includes a pump for wastewater transporting to the pressure main via the house connecting pressure pipes.
  • Each pump is connected to the autonomous electronic control unit fitted with inputs for the analysis of data from the sensors, outputs for the pump control, at least one processor, at least one database for at least one software module deposition and at least one communication interface for wire or wireless communication. At least two control units are connected to one to the other via a communication interface.
  • At least one control unit is fitted with equipment for real time monitoring and its backup power supply unit, and that at least one control unit is equipped with a software module for pumping synchronization which contains automating algorithm for a temporary controlled change of instantaneous flow rate and instantaneous pressure in at least part of the pressure main, and the software module for pumping synchronization.
  • the software module for pumping synchronization also includes a basic plan of flushing with statistically expected wastewater level in the pump sump and individual real times of the pump activation. The interconnection of the control units ensures information sharing between them allowing subsequent organization.
  • the backup power supply unit and the equipment for real time monitoring protect the control units against a loss of real time which would result in a mismatch of statistically expected wastewater level in the pump sumps where, for example, a twelve-hour lasting failure of power supply would completely invert the basic flushing plan for day and night.
  • System is equipped with a remote server to which at least some of the control units are connected via a communication interface.
  • the remote server is fitted with a database with a software module for pumping synchronization which includes a basic plan of flushing and individual times of activation for the pumps in all pump sumps in the given location of the pressure sewer system.
  • the remote server comprises the controlling software module to establish the master/slaves communication with the control units. This arrangement put the controlling software module in charge of the control units which then behave in accordance with the flushing plan transmitted from the remote server.
  • the core of the invention is based on the fact that the pressure sewer system remote server is connected via the communication interface to at least one database of records on water inflow into the pressure sewer system and wastewater outflow from the pressure sewer system for the previous period of time.
  • the remote server is connected via the communication interface to at least one database of records and/or weather forecasts. Thanks to the receipt of up-to-date data from the databases by the remote server, the system can update the flushing plan within the limits allowed by wastewater levels in the pump sumps.
  • the advantages of the invention is the possibility of deployment in the existing pressure sewer systems, the relatively low demands for hardware modifications of the currently used control units or the low costs related to the manufacture of the new modified control units.
  • Fig. 1 illustrates a diagram of the pressure sewer system with automatic flushing consisting of the pressure main 1 with four house connecting pressure pipes 2 routed from four pump sumps 3.
  • the house connecting pressure pipes 2 are equipped with the pumps 4 which transport wastewater from the pump sumps 3 into the pressure main 1.
  • each pump sump 3 is fitted with the control unit 6 .
  • the pressure main 1 drains wastewater to the wastewater treatment plant 17 where the pressure main 1 is equipped with the flowmeter 18 .
  • the flowmeter 18 provides data concerning the flow rate and the volume of wastewater leaving the pressure sewer system for the wastewater treatment plant 17 to be used in the database 14 of records on water inflow into the pressure sewer system and wastewater outflow from the pressure sewer system.
  • Fig. 1 illustrates a diagram of the pressure sewer system with automatic flushing consisting of the pressure main 1 with four house connecting pressure pipes 2 routed from four pump sumps 3.
  • the house connecting pressure pipes 2 are equipped with the pumps 4 which transport wastewater from the pump sumps 3 into the pressure main 1.
  • each pump sump 3 is fitted with the
  • control unit 6 illustrates the interconnection of the control units 6 and also their connection to the remote server 12 . It is obvious to those skilled in the art that the control units 6 are connected to the remote server 12 either by wire or in a wireless manner.
  • the remote server 12 in this example consists of a computer.
  • the control units 6 are connected to the sensors 5 not included in the illustration for sensing wastewater level in the pump sump 3 and to the pumps 4 to control the removal of wastewater from the pump sumps 3 .
  • each segment of the pressure main 1 is at least once a day flushed with wastewater flowing at a speed of 0.7 m/s.
  • the nominal flow rate Q n is determined by calculation based on the dimension of the given segment of the pressure main 1 .
  • Fig. 2 illustrates the diagram of the pump unit comprised of the pump sump 3 , house connecting pressure pipe 2 equipped with the pump 4 , the control unit 6 connected to the sensors 5 positioned in the pump sump.
  • the pump sump 3 refers to a leakproof tank where the wastewater inlet is installed.
  • the pump 4 is powered by electric current from the power mains.
  • the sensors 5 can be resistance, capacitance, or for example pressure based.
  • the control unit 6 can be created by a programmable logic automaton.
  • Fig. 2 indicates that the control unit 6 can receive signals using the inputs, or where applicable it can itself be a source of signals by means of the outputs.
  • Fig. 3 illustrates a diagram of the control unit 6 showing its connection to the power supply unit 19 .
  • the control unit 6 comprises the communication interface 7 , which can include, for example, a GSM modem, GPRS modem, GPS modem, modem for connection to a wireless computer network (LAN, Wi-Fi), etc.
  • it includes the power supply module 20 from which it is powered by means of the power supply unit 19 , and the measuring current module 21 .
  • the processor 16 coordinating the cooperation of individual components of the control unit 6 and executing steps defined by the software modules deposited in the database 8 .
  • the module 22 for the receipt of signals from the sensors 5 , and the power control module 23 of the pump 4 .
  • the control unit 6 also includes the equipment for real time monitoring 9 comprising an electrically powered clock which can also be comprised of a software module.
  • the backup power supply unit 10 powers either the electrically powered clock, which after the power supply recovery of the power supply module 20 informs the control unit 6 of the current time. Alternatively, the backup power supply unit 10 powers the whole control unit 6 for the entire duration of a power failure of the power supply unit 19 if a software clock is used.
  • Fig. 4 illustrates an example of the embodiment of the controlling part of the system which includes the plastic electrical installations box 25. Inside the box 25 some components of the system are fixed. For example the modules 22 for the reception of signals from the sensors 5 , control unit 6 , power supply module 20 , communication interface 7 , measuring current module 21 and pump power control module 4 .
  • the electrical installations box 25 is also fitted with the aerial output 24 , input 28 for the receipt of signals from the measurement of wastewater level in the pump sump 3 , the inputs 26 for power supply connection and output 27 for the penetration of cabling of the power control unit output of the pump 3 .
  • Fig. 5 provides an illustration of the remote server 12 connected to one control unit 6 .
  • the remote server 12 is fitted with the communication interface 7 , comprised of, as in the case of the control unit 6 , by a GSM modem, GPRS modem, or a GPS modem, modem for the connection to a wireless computer network (LAN, Wi-Fi), etc.
  • the remote server 12 is also connected via the communication interface 7 to the database 14 of records on water inflow into the pressure sewer system and wastewater outflow from the pressure sewer system for the previous period of time and to the database 15 of records and/or weather forecasts.
  • the remote server 12 is also fitted with the processor 16 and database 8 .
  • the database 8 includes the software module for pumping synchronization 11 and the controlling software module 13 .
  • the system comprises only interconnected control units 6 .
  • the control units 6 are equipped with the software module 11 for pumping synchronization.
  • This module 11 can be installed in the control units 6 subsequently, which means that this example of embodiment is suitable also for the existing pressure sewer systems.
  • the software module 11 for pumping synchronization is programmed based on the statistical processing of records on water inflow into the pressure sewer system and wastewater outflow from the pressure sewer system. Thanks to the statistical analysis of data, a basic plan of flushing is created.
  • the plan estimates the wastewater level in the pump sumps 3 based on an empirical model of flow rate and determines the order of the activation of the pumps 4 in real time according to the hydraulic simulation model of the low pressure sewerage network.
  • the empirical model of flow rate utilizes statistical information on the outflow of wastewater from the pressure sewer system during a day with individual days of week distinguished, and the effect of the average and maximum daily temperatures and the total precipitation amount are taken into account. Based on statistical probability the wastewater level in the pumps sumps can be determined and their inclusion into the flushing plan can be designed.
  • the hydraulic model of the low pressure sewerage network is the calculation analysis of the pressure sewer system based on which the order of activation of the pumps 4 in the pump sumps 3 and the time of their operation can be determined with a view to creating a flow rate sufficient for the removal of sediments without exceeding the nominal flow rate Q n and the nominal pressure P n in the pipes of the pressure sewer system.
  • Each control unit 6 is identified in the basic flushing plan while taking into account the position of the outlet of the respective house connecting pressure pipe 2 into the pressure main 1 , and the real time of its activation is determined so that the synchronized activation of the pumps 4 in the pressure sewer system created a controlled change in the instantaneous pressure P i and instantaneous flow rate Q i .
  • control units 6 skip the planned flushing of the pressure sewer system and start creating a reserve in the minimum amount of 50% of the capacity of the pump sumps 3.
  • the remote server 12 assumes the role of the master in communication and the control units 6 fulfil the role of the slaves.
  • the remote server 12 controls, using the software module 11 for pumping synchronization and the controlling software module 13 , the change in the instantaneous pressure P i and instantaneous flow rate Q i during the pressure sewer system flushing.
  • the system is able to create, based on the knowledge of records from the databases 14 and 15 , a modified plan of flushing for one planned or unplanned flushing.
  • the system can plan the flushing of the pressure sewer system in excess of the framework of the basic flushing plan based on records on precipitation in the respective location provided in the database 15 .
  • the basic flushing plan remains unchanged so that in the case of the remote server 12 failure the system of interconnected control units 6 follows the basic flushing plan.
  • the method and system for automatic flushing of the pressure sewer system and a pressure sewer system providing this method according to the invention can be employed in the field of operation of the pressure sewer system, in particular in the area of its operation and maintenance.

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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)
  • Processing Of Solid Wastes (AREA)

Claims (6)

  1. Procédé de rinçage automatique d'un système d'égout sous pression, composé d'un conduit sous pression principal (1) et d'au moins deux branchements sous pression de maison (2), chaque branchement sous pression de maison (2) reliant au conduit sous pression principal (1) un puisard de pompe respectif (3) pour des eaux usées, équipé de capteurs (5) pour mesurer le niveau des eaux usées dans le puisard avec pompe (3) correspondant, où chaque branchement sous pression de maison (2) ou puisard avec pompe (3) est équipé d'une pompe (4) pour transférer les eaux usées via le branchement sous pression de maison respectif (2) dans le conduit sous pression principal (1); chaque pompe (4) est interconnectée avec une unité de commande électronique (6), équipée d'entrées pour l'analyse des données des capteurs (5), de sorties pour la commande de la pompe (4), d'au moins un processeur (16), d'au moins une base de données (8), permettant installation d'au moins un module logiciel et au moins une interface de communication (7) pour une communication filaire et / ou sans fil, tandis que l'activation des pompes (4) pour le retrait des eaux usées du puisard avec pompe respectif (3) est exécutée de manière synchronisée, où le changement contrôlé temporaire de débit instantané (Qi) et de pression instantanée (Pi) est généré au moins dans un segment de conduit sous pression principal (1), où le débit instantané (Qi) pendant le changement contrôlé correspond à un débit de rinçage requis de conduit sous pression principal (1) pour le rinçage requis d'une majorité de sédiments résiduaires, dans le segment correspondant de conduit sous pression principal (1), et la pression instantanée (Pi) pendant le changement contrôlé ne dépasse pas la pression nominale (Pn) de conduit sous pression principal (1), considérant que le retrait des eaux usées des puisards avec pompe (3) est exécuté en fonction des données concernant le niveau des eaux usées dans les puisards avec pompe (3) et selon l'ordre des entrées des branchements sous pression de maison (2) dans le conduit sous pression principal (1).
  2. Procédé selon la revendication 1, caractérisé en ce qu'avant la génération du changement contrôlée du débit instantané (Qi) et de la pression instantanée (Pi) au moins dans certains des puisards avec pompe (3) une réserve pour l'accumulation des eaux usées est créé, assurant le rinçage complet du segment donné de la conduite principal sous pression (1).
  3. Procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce que les données concernant le niveau des eaux usées dans les puisards avec pompe (3) sont acquises à partir d'une base de données (14) d'enregistrements sur les entrées d'eau dans le réseau d'égouts sous pression et les sorties des eaux usées du réseau d'égouts sous pression dans la période de temps précédente.
  4. Procédé selon l'une quelconque des revendications 1 ou 3, caractérisé en ce que les données concernant le niveau des eaux usées dans les puisards avec pompe (3) sont acquises à partir d'une base de données (15) d'enregistrements et / ou de prévisions météorologiques.
  5. Système d'égout sous pression avec rinçage automatique où le système d'égout sous pression comprend un conduit principal sous pression (1) et au moins deux branchements sous pression de maison (2), chaque branchement sous pression de maison (2) reliant à la conduite principal sous pression (1) le puisard avec pompe respective (3) pour des eaux usées, équipé des capteurs (5) pour mesurer le niveau des eaux usées dans le puisard avec pompe (3) correspondant, dans lequel chaque branchement sous pression de maison (2) ou puisard avec pompe (3) est équipé d'une pompe (4) pour transférer des eaux usées via le branchement sous pression de maison respectif (2) dans la conduite sous pression principal (1); chaque pompe (4) est interconnectée avec une unité de commande électronique (6), équipée d'entrées pour l'analyse des données des capteurs (5), de sorties pour la commande de la pompe (4), d'au moins un processeur (16), d'au moins une base de données (8), permettant d'installer au moins un module logiciel et au moins une interface de communication (7) pour communication filaire et / ou sans fil, auquel au moins deux unités de commande (6) sont interconnectées en utilisant l'interface de communication (7), dans lequel au moins une unité de commande (6) est équipée d'un appareil de surveillance en temps réel (9) et de son unité d'alimentation de secours (10), et au moins une unité de commande (6) est équipée d'un module logiciel (11) pour la synchronisation du pompage, qui contient un algorithme d'automatisation pour le changement contrôlée temporaire du débit instantané et de la pression instantanée dans au moins une partie de la conduite principal sous pression (1), et un plan de rinçage de base avec le niveau des eaux usées statistiquement prévu dans le puisard avec pompe (3), basé sur un modèle empirique du débit des eaux usées et des temps réels individuels de l'activation des pompes (4) selon le modèle de simulation hydraulique du réseau de canalisations du système d'égouts sous pression, où le système est équipé d'un serveur distant (12), auquel au moins certaines des unités de commande (6) sont connectées via l'interface de communication (7) ; le serveur distant (12) est équipé de la base de données (8) avec la copie du module logiciel (11) pour la synchronisation du pompage, qui comprend le plan de rinçage de base et les heures individuelles d'activation des pompes dans tous les puisards avec pompe (3) dans un lieu donné du système d'égout sous pression, qui comprend également un module logiciel de commande (13) pour établir une communication de type master / slave avec les unités de commande (6), tandis que le serveur distant (12) est connectée via l'interface de communication (7) avec au moins une base de données (14) d'enregistrements sur l'arrivée de l'eau dans le système d'égout sous pression et sur la sortie des eaux usées du système d'égout sous pression pendant la période de temps précédente.
  6. Système d'égout sous pression selon la revendication 5, caractérisé en ce que le serveur distant (12) est connecté via l'interface de communication (7) à au moins une base de données d'enregistrements et / ou de prévisions météorologiques (15).
EP17177818.6A 2016-06-28 2017-06-26 Système d'égout sous pression et procédé Active EP3263786B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RS20210784A RS62026B1 (sr) 2016-06-28 2017-06-26 Kanalizacioni sistem pod pritiskom i metoda za njega
PL17177818T PL3263786T3 (pl) 2016-06-28 2017-06-26 System kanalizacji ciśnieniowej i sposób dla niego
HRP20211003TT HRP20211003T1 (hr) 2016-06-28 2021-06-24 Sustav tlačne kanalizacije i postupak za njega

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2016-383A CZ306856B6 (cs) 2016-06-28 2016-06-28 Způsob automatického proplachování tlakové kanalizace a systém k provádění tohoto způsobu

Publications (2)

Publication Number Publication Date
EP3263786A1 EP3263786A1 (fr) 2018-01-03
EP3263786B1 true EP3263786B1 (fr) 2021-04-14

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Family Applications (1)

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EP17177818.6A Active EP3263786B1 (fr) 2016-06-28 2017-06-26 Système d'égout sous pression et procédé

Country Status (7)

Country Link
EP (1) EP3263786B1 (fr)
CZ (1) CZ306856B6 (fr)
DK (1) DK3263786T3 (fr)
HR (1) HRP20211003T1 (fr)
HU (1) HUE055026T2 (fr)
PL (1) PL3263786T3 (fr)
RS (1) RS62026B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018109257A1 (de) 2018-03-09 2019-09-12 Buck-Chemie Gmbh Behältnis für ein WC-Körbchen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1609181B1 (de) * 1965-12-10 1969-10-23 Zander Ges Fuer Rein Und Abwas Entsorgungsanlage mit unter Druck stehendem Abwasser
US5503533A (en) * 1994-05-26 1996-04-02 Metropolitan Pump Company Fluid level control panel structure for multi-pump system
US6378554B1 (en) * 2000-01-14 2002-04-30 Little Giant Pump Company Controlled sewage sump network system
US8600568B2 (en) * 2006-12-20 2013-12-03 Data Flow Systems, Inc. Fluid flow management system and associated methods
EP2746477B1 (fr) * 2012-12-20 2019-10-16 Grundfos Holding A/S Procédé pour faire fonctionner une station de pompage des eaux usées

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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None *

Also Published As

Publication number Publication date
RS62026B1 (sr) 2021-07-30
PL3263786T3 (pl) 2021-11-29
HRP20211003T1 (hr) 2021-11-26
EP3263786A1 (fr) 2018-01-03
CZ2016383A3 (cs) 2017-08-09
HUE055026T2 (hu) 2021-10-28
DK3263786T3 (da) 2021-07-05
CZ306856B6 (cs) 2017-08-09

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