Method for setting up a wastewater pumping station in a wastewater shaft, and associated wastewater pumping station

Abstract

A method for setting up a wastewater pumping station in a wastewater shaft and a wastewater pumping station are provided. At least one solids-collecting tank which separates solids from wastewater containing solids, a liquids-collecting tank which received the treated wastewater from the at least one solids collecting tank, and a pump for emptying wastewater from the liquids-collecting tank via the solids-collecting tank, are produced as separate subassemblies. At least the solids-collecting tank and the pump are prefabricated in the form of a construction unit, and the construction unit is combined with the already on-site liquids-collecting tank during installation in the likewise already on-site wastewater shaft.

Claims

1. A method for setting up a wastewater pumping station in a wastewater shaft, comprising the acts of: producing as separate assemblies at least one solids collecting tank configured to receive wastewater containing solids, a liquid collecting tank configured to receive wastewater from the at least one solids collecting tanks from which the solids have separated, and a pump configured to transfer the wastewater received by the liquid collecting tank through the at least one solids collecting tank; prefabricating at least the pump and the at least one solids collecting tank as a construction unit; combining the liquid collecting tank and the construction unit at a site of the pumping station.

2. The method as claimed in claim 1, wherein the liquid collecting tank is integrated into the wastewater shaft.

3. The method as claimed in claim 2, wherein the liquid collecting tank and the wastewater shaft are produced from uniform materials.

4. The method as claimed in claim 1, wherein the construction unit and the liquid collecting tank are separated from one another in the wastewater shaft by a partition wall.

5. The method as claimed in claim 4, wherein the partition wall divides the wastewater shaft into a dry chamber for the construction unit and a wet chamber for the liquid collecting tank.

6. The method as claimed in claim 5, wherein the construction unit and the liquid collecting tank are coupled together at the site of the pumping station by at least one interface.

7. The method as claimed in claim 6, wherein the interface is mounted at least one of in and on the partition wall.

8. The method as claimed in claim 7, wherein an intake for the construction unit is conducted through the liquid collecting tank.

9. The method as claimed in claim 8, wherein the construction unit and the wastewater shaft are produced from different materials.

10. A wastewater pumping station, comprising: a solids collecting tank configured to receive wastewater containing solids; a liquid collecting tank configured to receive wastewater from the at least one solids collecting tanks from which the solids have separated; a pump configured to transfer the wastewater received by the liquid collecting tank through the at least one solids collecting tank; and a wastewater shaft configured to contain the solids collecting tank, the liquid collecting tank and the pump, wherein the solids collecting tank, the liquid collecting tank and the pump are separately produced assemblies, at least the solids collecting tank and the pump are prefabricated to form a construction unit configured to be combined with the liquid collecting tank in the wastewater shaft at a site of the pumping station.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a perspective representation of the wastewater pumping station according to an embodiment of the invention,

(2) FIG. 2 shows a longitudinal section through FIG. 1,

(3) FIG. 3 shows a top view of the object according to FIGS. 1 and 2 and

(4) FIGS. 4 to 6 show three different variants of the wastewater pumping station according to FIGS. 1 to 3, installed in a wastewater shaft.

DETAILED DESCRIPTION

(5) The figures show a wastewater pumping station which is installed or can be installed in a wastewater shaft 1. By way of the embodiments according to FIGS. 4 and 5, it can be seen that the wastewater shaft 1 may be realized in a cylindrical manner (FIG. 4) or also can have a cubic form (FIGS. 5 and 6). In all these cases, the wastewater shaft 1 is produced from concrete.

(6) In its basic design, the wastewater pumping station has a solids collecting tank 2. Two solids collecting tanks 2 which can be operated in an alternating manner, as is described in principle in generic European patent document no. EP 1 108 822 A1, are realized according to the embodiment. Solids located in the wastewater are held back via the solids collecting tank 2. The wastewater which is loaded with solids is supplied via an intake or an intake pipe 3 and a distributor 4 to the two solids collecting tanks 2.

(7) In the interior of the respective solids collecting tank 2, a separating screen typically ensures that the solids are held back and just pre-filtered wastewater passes by a pump 5, which is assigned to the solids collecting tank 2, and a suction pipe 6 finally into a liquid collecting tank 7. As soon as the pre-filtered wastewater which is stored in the liquid collecting tank 7 has reached a certain level, the pump 5 is activated and sucks in the pre-filtered wastewater by the suction pipe 6. The pump 5 then conducts the wastewater further via the solids collecting tank 2, thereby entraining the solids there to a pressure pipe 8, from where the wastewater pumped in such a manner is supplied, for example, to a wastewater treatment plant for further treatment. This is known in principle, for which purpose reference is made not only to European patent document no EP 1 108 822 A1 but also to International patent document no. WO 2010/025852 A1 presented by the applicant.

(8) The liquid collecting tank 7 and the pump or the two pumps 5 are realized in each case as separately produced assemblies. In addition, according to the invention, at least the solids collecting tank 2 or the two solids collecting tanks 2 and the pump 5 define a prefabricated construction unit 2, 4, 5, 6, 8, to which are also added in the embodiment and in a non-restricting manner the distributor 4, the suction pipe 6 and the pressure pipe 8. Said construction unit 2, 4, 5, 6, 8 can be seen in particular in FIG. 1.

(9) The relevant construction unit 2, 4, 5, 6, 8, which is prefabricated for example by the manufacturer or at the factory, is combined with the liquid collecting tank 7, which is already present on site, during the course of the installation of the construction unit 2, 4, 5, 6, 8 into the wastewater shaft 1, which is also already present on site. In this case, the liquid collecting tank 7 has been integrated on site into the wastewater shaft 1.

(10) This is because this purpose, the liquid collecting tank 7 and the wastewater shaft 1 in the exemplary embodiment are produced for the most part from uniform materials. This is applicable at any rate to the two realization variants according to FIGS. 4 and 5. Effectively, the design there is such that the wastewater shaft 1 is divided by a partition wall 9 into a dry chamber 1a and a wet chamber 1b. The construction unit 2, 4, 5, 6, 8 is situated in the dry chamber 1a.

(11) In contrast, the wet chamber 1b receives the liquid collecting tank 7 provided there or the wet chamber 1b and the liquid collecting tank 7 coincide. An upwardly open tub is defined by a partition wall 9 (produced from concrete), in the wastewater shaft 1 (also produced from concrete). The upwardly open tub can be closed by way of a removable cover 10 which is produced, for example, from concrete or metal, such that overall as a result a closed liquid collecting tank 7 is available.

(12) The construction unit 2, 4, 5, 6, 8 and the liquid collecting tank 7 are consequently separated from one another in the wastewater shaft 1 by the partition wall 9. In addition, at least one interface 11, 12 is provided in or on the partition wall 9. The interface 11, 12 is a tube connecting piece or a tube coupling in conjunction with seals if necessary. In addition, flanges and/or adapters can also be provided as component parts of the interface 11, 12.

(13) In the case of the exemplary embodiment according to FIG. 6, a partition wall 9 is not provided in the interior of the wastewater shaft 1 at that location. Rather, two (or also more) liquid collecting tanks 7, which in this case are realized or can be realized in each case as metal tanks, are situated in the interior of the wastewater shaft 1. The two liquid collecting tanks 7 can be connected together. In this respect, once again alternating operation of the two construction units 2, 4, 5, 6, 8 is just as possible as already described with reference to the exemplary embodiment according to FIGS. 4 and 5.

(14) Within the framework of the exemplary embodiment, the construction unit 2, 4, 5, 6, 8 and the liquid collecting tank 7 are coupled together by the interface 11, on site. That is to say the connection between the construction unit 2, 4, 5, 6, 8 and the liquid collecting tank 7 by the interface 11 is not effected until at the site of installation. When the construction unit 2, 4, 5, 6, 8 is placed in the wastewater shaft 1 in order to become coupled by the interface 11 with the liquid collecting tank 7 which is already present on site.

(15) The interface 12, in contrast, serves for coupling the intake or the intake pipe 3 with the distributor 4 or with the two solids collecting tanks 2. It is possible in this way for the intake or the intake pipe 3 to be able to be passed through the liquid collecting tank 7, as is immediately clear in particular by way of FIGS. 2 and 5. As a result of this, it is possible to realize the wastewater shaft 1 with only a small installation height because the intake height to the construction unit 2, 4, 5, 6, 8 is clearly reduced within the framework of the invention compared to the prior art.

(16) The construction unit 2, 4, 5, 6, 8 is produced overall from metal, for example stainless steel. In principle, however, plastics material can also be used as a possible material within the framework of the invention. In contrast, the wastewater shaft 1, and with it for the most part the liquid collecting tank 7, is produced overall from concrete. The removable cover 10 may consist of and be produced from metal.

(17) As already explained in the introduction, the construction unit 2, 4, 5, 6, 8 is prefabricated at the factory or by the manufacturer and transported to the installation site. The wastewater shaft 1 and the liquid collecting tank 7 are situated at the installation site. This is because, in the exemplary embodiment according to FIGS. 4 and 5, the partition wall 9 is established in the wastewater shaft 1 and the liquid collecting tank 7, which is defined in such a manner, is able to be closed finally by the removable cover 10. This may be effected in a pressure-tight manner. A pressure-tight design can also be seen in the case of the two liquid collecting tanks 7 according to FIG. 6 which are also already present on site in the wastewater shaft 1 and are combined at the installation site with the construction unit 2, 4, 5, 6, 8 which has been prefabricated at the factory or by the manufacturer.

(18) The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.