Abstract:
Um Zisternenwasser leichter von Schwebeteilchen befreien zu können, die sich in einer Schwimmschicht gesammelt haben, und außerdem ein einfach aufgebautes und leicht herzustellendes Filtergehäuse für einen Regenwasserfilter zu realisieren, wird vorgeschlagen, das Filtergehäuse, das eine zylindrische äußere Mantelfläche und einen Boden (14) hat, mit einem ersten Ausgang (10) für das gefilterte Wasser und im Zentrum des Bodens (14) mit einem zweiten Ausgang (12) für das nicht gefilterte Schmutzwasser zu versehen, der mit einem Abflussrohr (18) in Verbindung steht. Das Abflussrohr (18) hat einen parallel zum Boden (14) verlaufenden Abschnitt, wobei in der Wandung dieses Abschnittes oberhalb des Bodens eine Öffnung (20) vorhanden ist, die als Überlauf der Zisterne dient.
Abstract:
A water treatment system having a system inlet to receive a fluid flow, a treatment chamber, a first system outlet, and a second system outlet. The treatment chamber has an inlet in communication with the system inlet and an outlet in communication with the first system outlet, and is adapted to remove one or more contaminants from the fluid flow. The second system outlet is separated from the system inlet by a weir that prevents the fluid from passing into the second system outlet when the fluid is below a predetermined height, and allow at least a portion of the fluid to pass into the second system outlet without passing through the treatment chamber when the fluid is above a predetermined height. The second system outlet is isolated from the first system outlet such that fluid passing through the first system outlet can not impinge upon the treatment chamber outlet.
Abstract:
An apparatus for treating stormwater runoff. Stormwater enters the central sedimentation chamber (7) divided into multiple segments to provide a series of filtration/sedimentation chambers. At least one chamber is provided with a removable filter bulkhead (9). A grease trap (14) preceeds the final sedimentation chamber. Effluent from the final sedimentation chamber is discharged to a constructed wetland system (16), which surrounds the sedimentation tank. Water flows through the wetland system and contacts the root zone of wetland plants (18). A control valve (21) regulates the flow of water through the sedimentation tank and wetland.
Abstract:
In order for it to be possible for cistern water to be freed more easily from suspended particles which have collected in a floating layer, and also in order to realize an easy-to-produce filter housing of straightforward construction for a rainwater filter, it is proposed to provide the filter housing, which has a cylindrical outer lateral surface and a base (14), with a first outlet (10) for the filtered water and, in the centre of the base (14), with a second outlet (12) for the non-filtered, contaminated water, this second outlet being connected to a drainage pipe (18). The drainage pipe (18) has a portion which runs parallel to the base (14), the wall of this portion, above the base, containing an opening (20) which serves as a cistern overflow.
Abstract:
A drainage attenuating device comprising: a storage container having an inlet and an outlet and adapted to collect and store rainwater entering the storage container via the inlet; and flow restricting means adapted to restrict the flow of rainwater from the storage container towards a sewer system via the outlet.
Abstract:
The present invention relates to an overflow pit with adjustable channel. The pit is constituted of an external structure (2) comprising an inlet opening (3) envisaged to house one end of an inlet conduit (30), a first outlet hole (4) envisaged to house one end of an overflow conduit (40) and a second hole (5) envisaged to house one end of an outlet conduit (50) in which the opening (3) and the first hole (4) feature runoff surfaces at the same height, while the second hole (5) is housed below the first hole (4), a chute (6) is located between the opening (3) and the second hole (5) and envisaged to mutually connect, in a uniform fashion, the opening (3) and the second hole (5). The structure comprises furthermore: a connection between the opening (3) and the first hole (4) obtained by means of a channel (7), which is essentially composed of a blade (70) and a couple of lateral walls (71) laid out in a mutually parallel fashion; a couple of containment bulkheads (9), laid out in a mutually parallel fashion and externally to the lateral walls (71); a shaped collar (10) located in proximity to the opening (3), immediately after the inlet conduit (30); and adjustment elements which adjust the channel (7) to reduce the rate of the flow which runs from the inlet conduit to the outlet conduit through the chute (6) and allow the blade (70) to be raised or lowered, varying its position according to the rate of the flow that has to reach the outlet conduit and the rate of the flow that has to reach the overflow conduit.
Abstract:
The present invention relates to an overflow pit with adjustable channel indicated for obtaining an accurate calculation of the flow rate which is exceeded and for decreasing energy losses. The pit is constituted of an external structure (2) made of concrete or plastic, with an essentially parallelepiped or cylindrical configuration, with a trapdoor whose covering function is envisaged to allow access to the inside of the pit. The structure (2) features an inlet opening (3) envisaged to house one end of an inlet conduit (30), a first outlet hole (4) envisaged to house one end of an overflow conduit (40) and a second hole (5) envisaged to house one end of an outlet conduit (50) in which the opening (3) and the first hole (4) feature runoff surfaces at the same height, while the second hole (5) is housed below the first hole (4), a chute (6) is located between the opening (3) and the second hole (5) and envisaged to mutually connect, in a uniform fashion, the opening (3) and the second hole (5). The structure comprises, in particular, a connection between the opening (3) and the first hole (4) obtained by means of a channel (7), which is essentially composed of a blade (70) and a couple of lateral walls (71) laid out in a mutually parallel fashion, a couple of containment bulkheads (9), laid out in a mutually parallel fashion and externally to the lateral walls (71), a shaped collar (10) located in proximity to the opening (3), immediately after the inlet conduit (30) and adjustment elements which adjust the channel (7) to reduce the rate of the flow which runs from the inlet conduit to the outlet conduit through the chute (6) and allow the blade (70) to be raised or lowered, varying its position according to the rate of the flow that has to reach the outlet conduit and the rate of the flow that has to reach the overflow conduit.
Abstract:
A method and apparatus for treating contaminated stormwater runoff from roads and adjacent lands. A multi-stage and self-contained system designed to collect the "first flush" of stormwater runoff (which contains the majority of pollutants) and to treat the pollutants using sedimentation, filtration and constructed wetlands. The apparatus is mass-produced to provide standardized hydrologic controls, important to the reliability of the constructed wetland component of the apparatus. Raw stormwater enters the central sedimentation chamber of the apparatus which is divided into multiple segments designed to provide a series of sedimentation/filtration chambers. Each chamber is divided by a removable filter bulkhead sequenced from coarse to fine sediment sizes. Effluent from the final sedimentation chamber is discharged to the constructed wetland system which surrounds the central sedimentation basin. Water flows through the perimeter wetland system in subsurface/saturated conditions and contacts the root zone of the constructed wetland where biochemical interactions attenuate pollutants. Hydrologic control valves in the apparatus regulate the flow of water from the sedimentation basin to the wetland and the effluent discharge rate out of the wetland. This control and the standardization of the construction allows for precise hydrologic controls designed to provide a 5-10 day holding time within the apparatus.
Abstract:
Die Erfindung bezieht sich auf ein Verfahren zum Verhindern von Fehleinleitungen aus einem Regenwasserkanal (2) in einen Vorfluter, das dadurch gekennzeichnet ist, daß die Fehleinleitungen aus dem Regenwasserkanal (2) in einen Schmutzwasserkanal (4) überführt werden. Die Fehleinleitungen gelangen damit nicht zum Vorfluter, sondern werden zu dem mit der Kläranlage verbundenen Schmutzwasserkanal (4) überführt. Eine Anlage zur Durchführung des Verfahrens weist einen Regenwasserkanal (2) und einen Schmutzwasserkanal (4) auf, ferner eine Verbindungsleitung (5) zwischen diesen mit Fließgefälle zum Schmutzwasserkanal hin. Im Regenwasserkanal ist eine Schwelle (18) zum Ableiten von Flüssigkeit in die Verbindungsleitung angeordnet, und es regelt ein Regler (20) den Durchfluß durch die Verbindungsleitung (5), wobei der Regler (20) bei Überschreiten eines definierten Wasserstandes im Regenwasserkanal (2) diesen zum Schmutzwasserkanal (4) hin absperrt und bei Unterschreiten wieder öffnet. Statt eines Reglers (2) kann auch eine Pumpe (34) vorgesehen sein, die die Flüssigkeit vom Regenwasserkanal (2) zum Schmutzwasserkanal (4) fördert.