Abstract:
Described herein is a water treatment system for simultaneously removing ammonia and nitrates from a liquid. The water treatment system comprises a nitrifying volume for nitrification of a liquid and a denitrifying volume for denitrification of the liquid. One of the nitrifying volume and the denitrifying volume resides substantially within the other of the nitrifying volume and the denitrifying volume, and the nitrifying volume and the denitrifying volume are in fluid communication. In one aspect, the nitrifying volume is a relatively oxygenated region and the denitrifying volume is a relatively oxygen-depleted region. In another aspect, the nitrifying volume is in communication with an oxygen-supplying source for providing oxygen to create the relatively oxygenated region.
Abstract:
Es wird eine Begasungseinrichtung zum Einbringen eines Gases in eine Flüssigkeit, insbesondere Luft in Abwasser, beschrieben. Die Begasungseinrichtung umfasst wenigstens einen Einleitungskörper (10), der aus einem starren Trägerkörper (12) und einer auf dem Trägerkörper angeordneten Membran (14) mit Perforationslöchern (20) zum Einleiten des Gases in die Flüssigkeit besteht. Die Membran (14) besteht aus einem Silikonwerkstoff. Zwischen der Membran (14) und dem Trägerkörper (12) ist eine Schicht (22) aus einem silikonfreien Werkstoff angeordnet, der in Kombination sowohl stoßdämpfende als auch elastomere Eigenschaften aufweist.
Abstract:
Die Erfindung betrifft ein Verfahren zur biologischen Reinigung von Abwasser (A) mit folgenden Schritten: Bereitstellen eines Behandlungsbeckens (B) mit einem Boden (1) und zumindest einer sich davon mit einer Wandhöhe (W) ersteckenden Wand (2), mit einer Zulauföffnung (3) und mit zumindest einer in einem Bereich vom 0- bis höchstens zum 0,5-fachen der Wandhöhe (W) vorgesehenen Ablauföffnung (9), Zuführen des Abwassers (A) durch die Zulauföffnung (3) in das Behandlungsbecken (B), Inkontaktbringen des Abwassers (A) mit Mikroorganismen, welche auf im Behandlungsbecken (B) aufgenommenen losen Aufwuchskörpern (12) angesiedelt sind, und Abführen des durch die Wirkung des Mikroorganismen zumindest teilweise gereinigten Abwassers (A) aus dem Behandlungsbecken (B) durch die Ablauföffnung (9), wobei die Aufwuchskörper (12) im Behandlungsbecken (B) zurückgehalten werden.
Abstract:
Disclosed is a system and method for treating a body of water, without the necessity of being connected to an electrical grid, that includes photovoltaic collectors (126) and a battery bank (128) that is charged by the photovoltaic collectors. The photovoltaic collectors and the battery bank operate a series of air pumps that are connected to an air pump manifold to create a uniform source of compressed air that is distributed to a plurality of floating diffuser manifolds (104-118). A plurality of air stones are suspended under the floating diffuser manifolds that create air bubbles that are absorbed by the body of water and circulate said body of water to disburse a microbial fluid. In addition, an incubator system (100) is also connected to an air pump that incubates microbes to form a microbial fluid that can be automatically dispersed throughout the body of water.
Abstract:
A membrane biofilm reactor (MBfR) device for treatment of water avoiding biofouling comprising: a central core tube having a wall defining a lumen and one or more perforations in the wall defining a perforated region, the core tube further having a first open end and second substantially closed end; a plurality of hollow filaments, each filament having a wall that defines an inner lumen, an exterior surface, a first end, and a second end; and a case having a cavity, a first end cap, a second end cap, and at least one effluent port; wherein the first open end of the core tube is sealed in the first end cap with the perforated region extending into the central cavity of the case, and wherein the first ends of the plurality of hollow filaments are open and sealed in the first end cap and the second ends of the plurality of hollow filaments are open and sealed in the second end cap.
Abstract:
Die Erfindung betrifft eine Klärbeckenmembran (1) aus polymerem, insbesondere elastomerem Werkstoff, die mittels einer Perforation (2) gasdurchlässig ist, wobei im Hinblick auf eine dauerhafte Gasdurchlässigkeit dem polymeren Werkstoff ein abwasserbiologisch aktiver Inhibitor beigemischt ist.
Abstract:
Described is an apparatus (70) for the removal of organic substances and/or nitrogen sources from an aqueous medium comprising: i) a layered sheet construction (10) comprising a) at least one porous, gas permeable, water impermeable layer and b) a gas delivery layer attached to a layer of part a) on which there are a plurality of flow channels through which gas can be conveyed to the layer of part a) and ii) a gas inlet (71), the gas being delivered through the permeable layer a).
Abstract:
In a prior art method for artificially aerating waste water in an activated-sludge tank, a first aeration gas containing oxygen is fed to the waste water in the area of a lower aeration zone. Based on the prior art method, the invention provides a method for effectively aerating waste water in an activated-sludge tank having a small cross-sectional surface and a large depth and provides a versatile and economical aeration device therefore as well as an activated-sludge tank which, also in the case of a small cross-sectional surface and large depth, permits a sufficiently high oxygen transfer into the waste water to be treated. According to the inventive method, a second aeration gas containing oxygen is fed to the waste water (4) in an upper aeration zone (B2). The inventive aeration device is characterized by a lower aeration unit (10) and by at least one upper aeration unit (11). With regard to the activated-sludge tank, the cited technical aim of the invention is accomplished by providing an aeration unit in a lower aeration zone (B1) and by providing, above the latter, an upper aeration unit (11) in an upper aeration zone (B2).