EP2154300A1 - Waste water station - Google Patents

Abstract

The station (S) has an inlet (2) and a main channel (4) to an outlet (3). A hopper body (1) inserted between a waste water inlet and a sewer system, has a collection room (R) laterally attached to the channel, a pump conveyed into the channel on demand, and an anti-flooding valve (R1) in the channel. The pump is arranged in the collection room. A lateral cleaning shaft (26) provided between the channel and the collection room, rises from the channel to the collection room. A collection room base (25) laterally rises based on the lateral cleaning shaft in a continuously inclined manner.

Description

The invention relates to a wastewater station according to the preamble of patent claim 1.

At the DE-C-27 14 626 Known wastewater station are in the box-shaped shaft member in the flow direction to the sewer of a flat, horizontal bottom having collecting space, the pump housing, two backflow seals and the drain arranged one behind the other, so that there is a relatively large length for the wastewater station. If there is no backflow, all the wastewater flows freely through the pump housing, which is part of the main channel. Although the plenum extends to both sides of the main channel, the capacity of the plenum is limited. In the plenum due to the design outside the pump housing and a shield shaft many dead spaces and only a narrow passage from bottom to top, so that increasingly settle impurities in a backwater in the plenum, which are no longer flushed out when eliminating the backlog and relatively quickly lead to malfunction , Due to the limited volume of the collecting space, frequent short switch-on times of the pump are necessary in the event of a backflow. The one backflow stopper is mechanically lockable in case of danger. Then no wastewater can be removed from the wastewater station. With the wastewater station only wastewater is discharged, which enters the shaft body via the inlet. Wastewater from other processes must be disposed of separately.

At the DE-C-33 13 458 known lifting system is a two-piece, elongated tubular housing is provided which forms the continuous passage with full ball passage main channel and above the same a two backflow shutters bypassing the secondary channel. The backflow stops are installed between joints of the pipe housing and therefore no longer accessible for cleaning and maintenance. Despite the large length, the capacity of the plenum is small, which is formed from a portion of the main channel and the pump housing. The result is frequent back-up cycles of the pump. Only wastewater that accumulates in the drainage pipe can be disposed of. Waste water from further processes must be disposed of separately.

At the DE-U-83 06 460 Although 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.

In sewage technology, there is a clear distinction between lifting stations and sewage stations. 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. By contrast, 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 stated object is achieved with the features of claim 1.

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. As a result of the arrangement of the pump outside the main channel in the side collecting space and because of the high-lying plenum reason neither the plenum nor the suction area of the pump are polluted in normal operation without backwater. The purge barrier forms a natural barrier to the collection base, and favors proper flow in the main channel. If, after a backwater situation, considerable residual wastewater has to recycle from the large collection space into the recirculating main channel, contaminants from the collection space, collection space bottom and purge sill are effectively removed and flushed into the main channel where they are entrained by the normal sewage flow , This self-cleaning and the large capacity of the collecting space result in high operational reliability of the wastewater station despite long maintenance intervals.

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.

In order to intensify the flow dynamics for effluent from the collecting space residual wastewater, and flush out impurities reliably, it is expedient if the straight cleaning threshold also falls in the direction of flow in the main channel the slope corresponding obliquely.

Furthermore, 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. As a result, namely from the wide plenum in the main channel overflowing residual wastewater is accelerated and swirled through the portal, which also supports self-cleaning. Here, the plenum bottom outside the portal width with additional slope in the flow direction in the main channel, i. about funnel like for cleaning threshold, be formed.

Suitably, 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.

In an expedient embodiment, 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.

In a further expedient embodiment, 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. Advantageously, first and second covers are provided above the main channel and a third cover above the collecting space.

Here, 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.

Suitably, 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.

In terms of ease of handling during assembly, maintenance or repairs, the lids are fixed with latches, which, preferably, without tools are manually releasable.

In order to comply with regulatory requirements that require 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.

In an expedient embodiment, 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.

In order to be able to remove either the pump and / or the second cover conveniently individually, it is expedient if 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.

In order to also be able to individually service or replace each backwater valve in the main channel, it is expedient if 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. For this purpose, 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. Alternatively, the mouth may be directed farther downstream to avoid wicking the backwater stopper.

In one embodiment, 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.

In order to be able to even pump wastewater from the wastewater station upwards if necessary, 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.

In order to reduce the area of use of the wastewater station, e.g. in a basement floor to expand, in addition to the lower inlet of the shaft body with a slight slope at least one is connected to an integrated into the wastewater station drain inlet run to the main channel or to the plenum. Thus, 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.

In order to prevent odor nuisance, pest infestation or pushing back sewage, which is contaminated with faeces, through the inlet line and the outlet to the top, 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.

It is expedient in the course of the wastewater station a so-called Klenk flap with odor trap, insect and foam blocking function included, which works automatically.

Fig. 1

eine perspektivische Draufsicht auf eine Abwasserstation,

Fig. 2

eine perspektivische Schnittansicht in einer vertikalen Schnittebene, die eine Achse eines in Fig. 1 angedeuteten Hauptkanals der Abwasserstation enthält,

Fig. 3

eine perspektivische Schnittansicht der Abwasserstation in einer senkrechten Schnittebene senkrecht zur Achse des Hauptkanals,

Fig. 4

eine perspektivische Schnittansicht aus einer gegenüber Fig. 2 anderen Blick- richtung in einer vertikalen Schnittebene, die die Achse des Hauptkanals ent- hält, und

Fig. 5

eine Perspektivdraufsicht auf den Unterteil eines Schachtkörpers der Abwas- serstation, in einer geänderten Ausführungsform.

Embodiments of the subject invention will be explained with reference to the drawings. Show it:

Fig. 1

a perspective top view of a sewage station,

Fig. 2

a perspective sectional view in a vertical sectional plane, which is an axis of an in Fig. 1 includes the indicated main sewer of the wastewater station,

Fig. 3

a perspective sectional view of the sewage station in a vertical sectional plane perpendicular to the axis of the main channel,

Fig. 4

a perspective sectional view of an opposite Fig. 2 another direction of view in a vertical sectional plane containing the axis of the main channel, and

Fig. 5

a perspective top view of the lower part of a shaft body of the wastewater station, in a modified embodiment.

A suitable for fäkalalienhaltige 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. On the other side of the main channel 4, 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). Alternatively, 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.

In the shaft body 1, three covers D1, D2 and D3 are inserted from above. The first cover D1 closes on a boundary edge 16 (FIG. Fig. 1 and Fig. 2 ) a first, open-top compartment A1. In the first compartment A1 is functionally between the inlet 2 and the collecting space R 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. 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.

In an upper edge region of the shaft body 1 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. On the second cover D2, 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. 2 indicated) by 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.

As another important feature of the sewage station S, 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. 2 ) inclined in the flow direction in the main channel 4 approximately corresponding to the slope obliquely downwards, so that after a backwater and again unobstructed flow conditions in the main channel 4 residual waste water from the collection space R in the main channel passes and entrains impurities efficiently. 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.

In the discharge nozzle 10 is ( Fig. 2 ) Conveniently, 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.

Out 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. In Fig. 4 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 ,

Normally, 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. In this case ( Fig. 2 ) may be connected to the drain 3, a pressure line pipe 15 or pipe elbow up.

In Fig. 2 are dashed with 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.

Claims (22)

Wastewater station (S), in particular for faecal wastewaters, having at least one inlet (2) and a main channel (4) to a drain (3), between a sewage inlet (14) and the sewer (13) usable shaft body (1), one of the main channel (4) laterally associated collecting chamber (R), a demand-dependent in the main channel (4) pump (P) and downstream of the collecting space (R) at least one, optionally mechanically closable, backflow stop (R1) in the main channel (4) contains, characterized in that the pump (P) in the collecting space (R) is arranged, that between the main channel (4) and the collecting space (R) at least one lateral cleaning and rejection threshold (26) is provided, which from the main channel (4 ) to the collecting space (R) increases, and that the collecting space bottom (25), starting from the cleaning and rejection threshold (26) at least laterally increases continuously obliquely. Waste water station according to claim 1, characterized in that a single collecting space (R) on one side of the main channel (4) is arranged, or that a plurality of collecting chambers and a respective cleaning and rejection threshold (26) on both sides of the main channel (4) , Wastewater station according to claim 1, characterized in that the cleaning and rejection threshold (26) is substantially straight and sloping in the flow direction in the main channel (4) approximately corresponding to the slope. Wastewater station according to claim 1, characterized in that the cleaning and rejection threshold (26) by portal walls (27) between the main channel (4) and the collecting space (R) provided lateral passage portal is limited, whose width is less than the inside diameter of the Collection room (R). Sewer station according to claim 1, characterized in that a suction region (28) of the pump (P) in the collecting space (R) is placed entirely at a distance above the collecting space bottom (25). Waste water station according to claim 1, characterized in that between the inlet (2) and the cleaning and rejection threshold (26) in the main channel (4) a, preferably automatic, backflow stop (R2) is arranged, the hinged hinged flap and has a sealing seat, and that, preferably, a manually and / or motor-adjustable, directly or indirectly engageable on the flap to attack attack means for opening and keeping open the flap exhibiting actuator is provided. Sewer station according to at least one of the preceding claims, characterized in that the shaft body (1) is substantially circular, and that the main channel (4) either eccentrically along an outer wall side or approximately in the middle of the shaft body (1). Wastewater station according to claim 1, characterized in that the main channel (4) and the collecting space (R) at the top, by Begrenzungsrändem (16) comprised compartments (A1, A2, A3) below a wastewater-free, above an intermediate wall (Z) or an intermediate Frame (30) of the shaft body, provided maintenance space (W) are, and in that on the boundary edges (16) covers (D1, D2, D3) are detachably mounted, in particular first and second covers (D1, D2) above the main channel (4 ) and a third cover (D3) above the collecting space (R). Sewer station according to claim 8, characterized in that in the third cover (D3) a pump housing (6) of the pump (P) is recessed, which has a discharge nozzle (10, 10a, 10b) located in the maintenance room (W) from the pump housing (6) extends down to the second lid (D2) and bypasses the backflow stopper (R1) and, preferably, is integrally formed with the second lid (D2). Sewer station according to claim 9, characterized in that in the discharge nozzle (10) a check valve (R3) is arranged. Sewer station according to claim 8, characterized in that the covers (D1, D2, D3) are fixed with, preferably manually releasable, clamping locks (40). Waste water station according to claim 9, characterized in that on the second cover (D2) from the maintenance room (W) manually or by motor actuated locking member (9, 22) at least for mechanical closing of the pressure port (10) bypassed backwater stopper (R1) is arranged. Wastewater station according to claim 9, characterized in that in the third cover (D3) a connection (5) for a pump control and / or sensor is provided. Wastewater station according to claim 9, characterized in that the discharge nozzle (10) has a part (10a) pivotably arranged on the pump housing (6) and an integral part (10b) with the second cover (D2), which part can be actuated via a manually actuable clamping lever coupling (17 ) are releasably connected. Sewer station according to at least one of the preceding claims, characterized in that the backflow shutters (R1, R2) are arranged in insert parts (20) which are removably inserted into the compartments (A1, A2) of the shaft body (1) and pushed through the covers (D1, D1, A2). D2) are secured. Wastewater station according to claim 9, characterized in that the pressure port (10) above a functional area (F) of the pressure port (10) bypasses backwater stopper (R1) opens and is directed into the functional area (F). Wastewater station according to claim 12, characterized in that the backflow closure (R1) has a pendulum hinged, automatically opening and locking flap (18) and a sealing seat (19), and that the locking member (9, 22) directly or indirectly on the flap ( 18) to attack attacking means for opening and keeping open and / or forced closing the flap (18). Wastewater station according to claim 1, characterized in that to the outlet (3) of the shaft body (1) upwards a pressure line (15) or a pressure line knee is connected. Sewer station according to at least one of the preceding claims, characterized in that in addition to the inlet (2) of the shaft body (1) in the shaft body (1) to an in the wastewater station (S) integrated drain (B) connected inlet line (E) upstream of the backflow stopper (R1) leads to the main channel (4) or the collecting space (R). Wastewater station according to claim 19, characterized in that in the outlet (E) in the outlet (E) a backflow stopper, optionally also mechanically closable, and / or a smell closure (36, 36 '), is provided. Sewer station according to claim 19, characterized in that the inlet strand (E) a in the shaft body (1) placed snorkel (7) in a top wall of the collecting space (R) or the main channel (4) and to the in or under a cover of the shaft body (1) arranged outlet (B) is connected. Wastewater station according to claim 20, characterized in that in the outlet (B) or in the inlet line (E) a Klenk'sche flap (36 ') having an intake-side collecting volume is pivotably arranged in a substantially horizontal seat, which automatically by a ballast weight and / or buoyancy due to a closed position and wastewater containing collecting volume temporarily assumes an open position.

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