摘要:
L'invention concerne un système de traitement des eaux usées comprenant : - un réacteur principal (1) contenant la matière d'un lit filtrant (2) granulaire, ladite matière étant fixe et reposant sur un bac de récupération (3) des eaux traitées, - un dispositif (4) pour injecter les eaux usées disposé dans le réacteur principal (1), au-dessus du lit filtrant (2), - un dispositif (7) pour injecter du gaz oxygéné ou de l'air dans le lit filtrant, se caractérisant par le fait que : - ledit système comprend un réacteur primaire (5) configuré pour assurer le stockage préalable temporaire des eaux usées à traiter avant leur injection régulière dans le lit filtrant (2), ledit réacteur primaire contenant un lit enzymatique (50), les eaux usées transitant par ledit réacteur primaire avant d'être injectées dans le réacteur principal (1), - le dispositif (4) pour injecter les eaux usées comprend des buses (40) aménagées au-dessus du lit filtrant (2) et disposées de manière à assurer une répartition uniforme des eaux usées dans ledit lit filtrant, ledit dispositif d'injection étant configuré pour injecter les eaux usées de manière discontinue dans ledit lit filtrant, - le dispositif (7) pour injecter le gaz oxygéné ou l'air est disposé dans la partie inférieure du lit filtrant (2), au coeur de celui-ci, ledit dispositif d'injection étant configuré pour injecter le gaz oxygéné ou l'air de manière discontinue.
摘要:
An aquarium overflow device capable of preventing adverse effects by suction noise of an overflow pipe. The aquarium overflow device according to the present invention is equipped with a water storing portion 52 for storing water W in an aquarium, an overflow pipe 54 extended upwardly in the water storing portion 52 and having an upper end opening for introducing the water W stored in the water storing portion 52 and a lower end opening for discharging the water which is open to a bottom wall side of the water storing portion 52, and a sound preventing cover 47 provided in the water storing portion 52 so as to cover the entire region of the above-water portion of the overflow pipe 54.
摘要:
An apparatus includes a first mechanical component for cleaning parts by contacting the parts with a fluid, and a second mechanical component for biodegrading the organic matter removed from the parts. The first mechanical component is in communication with the second mechanical component so that the fluid recirculates between the first and second mechanical components. A method of washing parts including the steps of placing an article in a first chamber (20), circulating a washing liquid (82) from a second reservoir (80) to the first reservoir (20) to wash the surfaces of the article in contact with the liquid, passing the washing liquid (82) through a porous medium (38), draining the washing liquid from the first chamber (20) into the second chamber (80), removing organic matter in the washing liquid (82) and recirculating the washing liquid from the second chamber (80) to the first chamber (20), is also provided.
摘要:
The wastewater treatment systems having a plurality of treatment modules. Influent is directed to a covered anaerobic reactor (12), and then to an attached growth pretreatment filter (15) that is at least intermittently exposed to oxygen. A first (18) and a second (18') hydroponic reactor follow the filter, and are followed by a verticalflow wetland (24).
摘要:
The invention relates to operation of a trickling filter (200) used in wastewater treatment. Real-time monitoring of biomass accumulation within synthetic or plastic modular media (204) is provided.
摘要:
The invention relates to a method and device for effluent treatment, whereby the effluent (6) to be treated is biologically purified in a fixed-bed (1), in particular, a trickling filter and the output (12), from the fixed bed (1) is subjected to a dead-end membrane filtration (2) and the retained solids removed by back-flushing. Effluent (6) can, thus, be purified using a fixed-bed (1) to such a degree that the quality of the treated effluent allows it to be used as water supply, in particular, for irrigation purposes. Furthermore, filtration by means of the dead-end principle has the advantage of a low energy requirement in comparison with a cross-flow operation and a dead-end membrane filtration plant requires less space than a conventional clarifying basin and sand filter.
摘要:
The invention relates to the purification of untreated water which is polluted with dissolved organic carbon compounds which can be biologically or adsorptively removed in a three-step process, whereby the upstream purification step is predominantly biological, i.e. operates as a biofilter (1), and both subsequent purification steps are predominantly adsorptive in nature, i.e. operate as adsorbers (2, 3). The biofilter (1) is purified by backwashing, whereby the backwashing periods occur according to the TOC determined between the biofilter (1) and the upstream adsorber (2) and/or running time and/or pressure loss. The upstream adsorber (2) is also cleaned by backwashing and is subsequently shifted into a downstream position alternating with the other adsorber (3). The method is suitable for obtaining TOC concentrations in treated water of less than 500 ppb.
摘要:
Die Erfindung bezieht sich auf ein Verfahren zur Aufbereitung von Industrieabwässern vorzugsweise von Abwässern aus der metallverarbeitenden Industrie, vorzugsweise dazu geeignet das Abwasser derart aufzubereiten, daß es der Produktion erneut zugeführt werden kann. Dabei durchläuft das Abwasser eine Folge von Behandlungsschritten bestehend aus einer chemisch/physikalischer Flockung/Fällung (2) einem Filtersystem (5) einer biologischen Abwasserreinigungsstufe (6) sowie einer Nanofiltrationseinheit (12).
摘要:
A filtration bed support for biolytic filtration wherein the filtration bed comprises a bed of solids in various stages of decomposition ranging from raw unprocessed organic material on the surface of the bed to fully decomposed humus which forms the bulk of the bed. The bed is kept from blocking by living organisms. The support comprises a three dimensional humus matrix lattice.