Patent EP-2208711-A1 (EP)
IPC: C02F3/12
Filed: 2009-01-09
Abstract: The wastewater clarification plant comprises a container (1) having a chamber (3, 4) in which an airlift housing (8) is arranged, a compressed air source external of the container, a distributor with a magnet valve, a pneumatic line for airlift housing, and a clarification control electrically connected with the distributor, which is installed in interior of the container. Between the distributor and the compressed air source and/or the clarification control, a compressed air feed line (16) guiding in the container, and an electric line are equipped. The wastewater clarification plant comprises a container (1) having a chamber (3, 4) in which an airlift housing (8) is arranged, a compressed air source external of the container, a distributor with a magnet valve, a pneumatic line for airlift housing, and a clarification control electrically connected with the distributor, which is installed in interior of the container. Between the distributor and the compressed air source and/or the clarification control, a compressed air feed line (16) guiding in the container, and an electric line are equipped. The airlift housings are arranged in the container having an access and are connected over compressed air lines (19) on the distributor. The distributor is installed in the area of the access above the process filling level of the clarification plant with a holder manually operating without tool, in removable manner. The compressed air line of the distributor is arranged for airlift housing in the container. The holder comprises a hand-operating lever for determining, excavating and utilizing the distributor. An electric indicator- or float switch sensor connected to the clarification control is installed in the container. The electric power of the sensor is conducted in and through the distributor to clarification control. The distributor comprises a mechanical reception at external side for mounting an electric cable of the electric indicator- or float switch sensor. The electric power of the sensor is directly conducted or conducted over a plug connection over the distributor to clarification control. The distributor comprises an external housing made of plastic-injection molded parts. Hermetical sealings are equipped between a compressed air area and an actuator area, and the actuator area and the external side in the external housing. The compressed air area is arranged in a housing lower part that has a compressed air inlet, a distributor channel, stitch channels from distributor channel to valve slit chamber, integrated valve slit and connection piece in extension of the valve slit for the compressed air tubes. Two sealable cable bushings are arranged in the housing lower part with a bolted connection or a plug connector part. A flange of a compressed air plug connector is sealably arranged in the compressed air inlet. The actuator area is arranged in a housing upper part that is screwed together under intermediate layer of sealing element with a circumferential flange of the housing lower part. A plain mounting side of the distributor is formed on the housing upper part. A lower lying retaining apron is formed on housing upper part at the mounting side and is pivotably arranged external of the operating lever in swing bearing and is coupled over excenter with tie-rods that project above the retaining apron over the mounting area. A mounting abutment is arranged in the container for the distributor and has a plug pocket arranged around a break-through and/or an empty conduit protruding out from the container towards outside for the compressed-air tube connector, for the socket apron, and a holding opening for the tie rods. The reception is an open pocket arranged in the housing upper part positioned laterally on the mounting area limiting above the socket apron and below the tie rods, for detachable clamping of an electric line. A control line- and a compressed air-feed line section connected to the distributor are installed and have quick connector or plug-in couplings external of the container. The control line and the compressed air feed line are connectable to the quick connector or plug-in couplings.