EP2154300B1 - 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 one off DE 31 12 141 A known inspection shaft, which is considered to be the closest prior art, is the bottom of the plenum level and at a higher level than the bottom of a chamber part in which insert parts with first and second backflow shutters are separated by a circumferential wall from the plenum. The main channel is separated on both sides only by one edge from the collection space. If a float control automatically shuts off the pump when the water level drops, then residual water will have to gradually find ways in the main channel, with impurities contained in the wastewater not being reliably carried along, sticking and drying until the next residue. Such fixed impurities not only mean significant odors that penetrate through the feeds in the building, but act like germ cells, which are responsible for any further flooding in the plenum further impurities, until finally the reliability is compromised, eg because in a Rückstaufall the pump can no longer aspirate or the collecting space no longer, as required, enough to store inflowing wastewater or the float control is obstructed.

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.

At one off US 2,701,026 A known Überftutungssteuersystem low-lying pumps are installed on both sides of the main channel, which arranged in portal-like openings grid and placed behind disintegrators directly from the

At one off EP 1035262 A known wastewater station is the first backpressure in a Rückstaufall immediate pump located directly in the main channel upstream of the first backflow stopper.

At one off EP 0736636 A Well known sewer manhole arranged at the bottom of the shaft contains an open main channel, formed on both sides with slope surfaces.

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 are due to the design outside the pump housing and a shield shaft many dead and only a narrow passage from bottom to top, so that increasingly deposit with a backwater in the plenum impurities that 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 side 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 collecting space is low, 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.

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. Usually it can be at a lifting plant Therefore upstream no backflow situation. 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. Due to the arrangement of the pump outside of the main channel in the side collecting space and because of the high-lying and sloping collecting space reason neither the collecting space nor the suction area of the pump are polluted in normal operation without backwater. The purge barrier provides a natural barrier to the plenum bottom, and favors proper flow in the main channel. If, after a backflow situation, considerable residual waste water from the large collecting space has to pass back through the cleaning threshold and the rounded edge into the main channel, which does not suck the pump, contaminants in the residual water from the collecting space will be returned thanks to the continuously sloping collecting chamber. Basically, the passageway and portal walls bordering the sill and edge are effectively removed and flushed into the main channel, where they are then carried along by the normal sewage flow. This self-cleaning, enforced by the concept of sloping collecting space, the passage portal with the portal walls, and the cleaning threshold, results in a high level of operational reliability of the wastewater station despite long maintenance intervals. Because it is intensified the flow dynamics in returning residual wastewater, since the purge threshold is bounded by the portal walls of the provided between the main channel and the collecting space lateral portal. This can namely accelerated from the wide plenum in the main channel overflowing residual wastewater through the portal and be swirled, which supports the self-cleaning.

In an expedient embodiment, the collecting space bottom to the passage portal funnel-like design, so that draining residual waste water entrains contaminants from the plenum even more efficient.

Instead of only one collecting space but also communicating collecting spaces can be provided on both sides of the main channel to increase the collection capacity.

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

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 stopcock closes when the collection chamber is sufficiently filled and prevents sewage from flowing back into the inlet from the collection space until the pump is turned 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 a further expedient embodiment, the main channel and the collecting space are open at the top, compartments encompassed by delimiting edges 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. Suitably, first and second covers are above the main channel and a third cover above the collecting space intended. In terms of ease of handling during assembly, maintenance or repairs, the lids are fixed with latches, which, preferably, without tools, are manually releasable.

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 order to meet regulatory requirements that require an optional mechanically lockable backwater valve can be arranged on the second cover from the maintenance room from manually or motor-operated locking member at least forcibly closing the bypassed from the discharge nozzle first backwater. This first backflow stopper is either closed by hand in case of danger after alarming the operator, or automatically by motor in response to a generated by a sensor or control command.

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 be able to wait or replace each backflow obstruction in the main channel individually, it is expedient if the first and second backflow shutters are arranged in inserts which are removably inserted into the compartments of the shaft body and secured in position by the lid or the intermediate frame.

In one embodiment, the first backflow stopper with its pendulum-hinged flap can even be forcibly kept open in order not to influence the normal flow. Only with a backwater does he close automatically or is he forced to close.

If necessary, wastewater from the wastewater station may even be raised, e.g. beyond the so-called backwater height, to pump, can be connected to the flow of the shaft body up a pressure line or a pressure line knee. 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 of an integrated into the wastewater station drain line is also led to the main channel or 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 branch can be connected upstream of the first backflow closure at different points 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 combined with at least one inlet strand E and only indicated flow B, for example, in the cover (not shown) of the shaft body 1. 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 adjacent to the main channel 4. The pump P sucks in a backwater up to a selectable damming height from the collecting space R (suction 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 layer 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 relatively large volumes 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 collecting 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 area 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 area. 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 member 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 stop 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 (15)

1. Wastewater station (S), in particular for wastewater containing faeces, comprising a shaft body (1) having at least one inlet feed (2) and a main channel (4) extending with a slope to an outlet (3), the wastewater station (S) being positioned between a wastewater supply (14) and the canalisation (13), at least one collection chamber (R) with a bottom (25) associated sidewardly to the main channel (4), downstream of the collection chamber (R) at least a first, optionally mechanically closable reflux stopper (R) in the main channel, a pump (P) in the collection chamber (R) for pumping away wastewater upon demand from the collection chamber (R) under deviation of the first reflux stopper (R) into the main channel (4), the pump being arranged above the bottom (25) in the collection chamber (R), wherein a sideward cleaning and repelling threshold (26) is provided between the main channel (4) and the collection chamber (R), characterised in that the cleaning and repelling threshold (26) is bounded by portal walls (23) of a sidewards through flow portal provided between the main channel (4) and the collection chamber (R), and that the bottom (25) of the collection chamber (R) is situated higher up then the bottom of the main channel, is inclined continuously obliquely downwards to the main channel (4) and extends to the cleaning and repelling threshold (26) and into the main channel (4).
2. Wastewater station according to claim 1, characterised in that the bottom (25) of the collection chamber (R) extends with the form of an inlet funnel towards the cleaning threshold (26).
3. Wastewater station according to claim 1, characterised in that the cleaning threshold (26) is substantially straight and is inclined corresponding to the slope of the main channel (4).
4. Wastewater station according to claim 3, characterised in that collection chambers each with a respective cleaning threshold (26) are provided at both sides of the main channel (4).
5. Wastewater station according to claim 1, characterised in that a, preferably automatic, second reflux stopper (R2) is arranged in the main channel (4) between the inlet feed (2) and the cleaning threshold (26), which second reflux stopper (R2) comprises a pivoting articulated flap and a sealing seat and that, preferably, a manually and/or motorised adjustable engagement means is provided which can be brought into engagement at the flap directly or indirectly for opening and keeping open the flap.
6. Wastewater station according to claim 1, characterised in that the main channel (4) and the collection chamber (R) are arranged in compartments (A1, A2, A3) below a wastewater free maintenance space (W), the compartments (A1, A2, A3) being open at the top and surrounded by bounding edges (16), the maintenance space (W) being provided above an intermediate wall (Z) or above an intermediate frame (30) of the shaft body (1), and that lids (D1, D2, D3) are removably arranged on the bounding edges (16), in particular, first and second lids (D1, D2) above the main channel (4), and a third lid (D3) above the collection chamber (R), and that the lids (D1, D2, D3) are secured by clamping fixations (40) which, preferably, are releasable manually.
7. Wastewater station according to claim 6, characterised in that a pump housing (6) of the pump (P) is provided in sunk fashion in the lid (D3) which pump housing (6) has a pressure socket piece (10, 10a, 10b) extending in the maintenance space (W) from the pump housing (6) downwardly to a second lid (D2) above a further compartment (A2) containing the reflux stopper (R), and that the pressure socket piece (10, 10a, 10b), preferably, is integrally formed with the second lid (D2).
8. Wastewater station according to claim 6, characterised in that a manually or motorised actuable locking member (9, 22) at least for mechanically closing the first reflux stopper (R) is provided at the second lid (D2) such that it is actuable from the maintenance space (W).
9. Wastewater station according to claim 7, characterised in that the pressure socket piece (10) comprises a part (10a) which is pivotably arranged at the pump housing (6) and a part (10b) which is integral with the second lid (D2), which parts are releasably connected by a manually actuable tensioning lever coupling (17).
10. Wastewater station according to claim 5, characterised in that the first and second reflux stoppers (R1, R2) are arranged in insert parts (20) which are inserted removably into the compartments (A1, A2) of the shaft body (1) and which are secured in place by the lids (D1, D2).
11. Wastewater station according to claim 7, characterised in that the first reflux stopper (R1) has a pivotably articulated, automatically opening and closing flap (18) and a sealing seat (19) and that the locking member (9, 22) has engagement means which can be brought into engagement at the flap (18) directly or indirectly for opening and for keeping open and/or for forcibly closing the flap (18).
12. Wastewater station according to claim 1, characterised in that a pressure line (15) or a pressure line knee extending upwardly is connected with the outlet (3) of the shaft body (1).
13. Wastewater station according to at least one of the preceding claims, characterised in that in addition to the inlet feed (2) and inlet strand (E) which extends to the main channel (4) or to the collection chamber (R) upstream of the first reflux stopper (R) in the shaft body (1) which inlet strand (E) is connected with a drain (B) integrated in an upper position into the wastewater station (S), and that a further reflux stopper, optionally even a mechanically closable one, and/or a smell stopper (36, 36') is provided in the drain (B) or in the inlet strand (E).
14. Wastewater station according to claim 13, characterised in that the inlet strand (E) is as spout (7) both connected to the lid (D1, D3) of a compartment (A1, A3) and the drain (B).
15. Wastewater station according to claim 13, characterised in that a Klenk flap (36') is pivotably arranged in the drain (B) or in the inlet strand (E) at a substantially horizontal seat, the Klenk flap (36') having a storing volume at the in-feed side, which Klenk flap (36') automatically is in a closing position by means of a ballast weight and/or due to buoyancy force and which temporarily moves into an open position with wastewater contained in the storing volume.

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