摘要:
Circulation systems for ponds, lakes, or other bodies of water. In one set of embodiments, water is drawn up from the depths of the body for exposure to the atmosphere and to generate an overall, high flow circulation pattern throughout the entire body. In other embodiments, the circulation in the body of water is primarily limited to an upper aerobic zone with only small and controlled volumes from a lower anaerobic zone being brought up. Each system preferably includes a flotation platform, dish, impeller, and draft tube with specific modifications to the various systems to adapt them for use in a variety of environments.
摘要:
The invention concerns a device (10) for stirring and aerating a liquid (3) in a treatment vessel (1), comprising: at least a funnel (11); at least a casing (12) connected to said funnel (11); at least a main stirrer (13) located in said casing (12); means (14, 15) for driving said stirrer (13) in rotation; and means (17, 18) for incorporating air in said liquid, said air incorporating means consisting exclusively of means adapted to incorporate in said liquid (3) air at atmospheric pressure under the sole effect of the movement of said liquid (3) inside the device (10). Said device is characterised in that said air incorporating means include the upper edge of said funnel (11), configured so as form a cascade of liquid (3) at the periphery of said funnel (11).
摘要:
Various combinations of rotors (20), baffles (50, 70), shroud (44), discs (32), pumping devices (260), and restriction assemblies (300) provide various liquid management units (10) with a wide variety of applications including dredging, mixing, de-stratification, oxygenation, purification and decontamination. An illustrative embodiment uses a) a shaft mounted disc rotor (20) partially submerged into a liquid for introducing flow-inducing energy and air or treatment gas into the liquid, b) a first baffle (50) for receiving liquid from below the surface of a body of liquid and directing the liquid to the rotor (20), and c) a second baffle (70) for receiving treated liquid from the rotor (20) and directing the treated liquid below the surface of the body of liquid.
摘要:
An apparatus for aerating waste water comprising a surface aerator (2) adapted to rotate about a vertical axis (3). A number of circumferentially spaced baffles (13) are provided at the inner side of the cap (5). These baffles (13) extend upwardly from the lower side of the cap (5) to the top wall 6 and extend over a distance radially. The cap (5) may have a side wall (7) with a lower edge extending vertically downwards or inwards. Other embodiments of the cap (5) are specifically adapted for use in an installation for treating waste water, in which the apparatus serves also for bringing the liquid into circulation.
摘要:
Der Oberflächenbelüftungskreisel (1) ist mit einem mit einer vertikal verlaufenden Antriebsachse verbundenen Tragteil (9) versehen. An letzterem ist eine Mehrzahl von aus je einer Schaufel (11) und zwei Strömungsleitwänden (15,17) bestehenden Flüssigkeitsfördereinheiten (10) einstellbar befestigt. Zur Verbesserung der Sauerstoffeintragsleistung pro Kilowatt Kreiselantriebsleistung sind die einen Flüssigkeitsfördereinheiten (10) derart ausgebildet, dass die Schaufel (11) in einer in Umlaufrichtung (V) des Kreisels (1) gekrümmten, in sich verwundenen Ebene verläuft, derart, dass die Flüssigkeitsstrahlen hochkant aus dem Kreisel (1) ausströmen.