摘要:
A kitchen wastewater treatment device for removing oil, fat and grease from kitchen wastewater has a mechanical filter (3) to filter out solid matter from the raw wastewater. The wastewater flows from an inlet (1) through the filter (3) and into a primary chamber (25) and a secondary chamber (26) divided by an internal baffle plate (6) that extends upwardly from a base of the vessel. The wastewater with reduced oil, fat and grease exits through a discharge rise pipe (9) while the oil, fat and grease layer is separated from the wastewater by a holding chamber and extracted out of the device through a hose (17). Small solid food waste and small miscellaneous solid materials can be removed from the discharge of kitchen sinks at cafes, eateries and the like and disposed of in an environmentally friendly manner. Fat, oil and grease waste can be trapped and removed, followed by separation from the wastewater and converted into usable value-added materials.
摘要:
Eine Flotationsvorrichtung (10) zur Abtrennung von Feststoffpartikeln aus einer Suspension unter Bildung einer an Feststoffpartikeln armen Fraktion und einer an Feststoffpartikeln reichen Fraktion umfasst einen Behälter mit einem Einlass (14) für die Suspension, mit einem Auslass (16) für die an Feststoffpartikeln arme Fraktion, mit einem Auslass (18) für die an Feststoffpartikeln reiche Fraktion sowie mit wenigstens einem aus mehreren übereinander angeordneten Lamellen (22) zusammengesetzten Lamellenblock (20), wobei der wenigstens eine Lamellenblock (20) eine zu der Behälterwand orientierte Rückseite und eine auf der gegenüberliegenden Seite des Lamellenblocks (20) angeordnete Vorderseite aufweist, und wobei an der Rückseite des wenigstens einen Lamellenblocks eine sich zumindest über einen Teil der Rückseite des Lamellenblocks erstreckende Platte (26) angeordnet ist, wobei die Platte eine Vielzahl von Öffnungen aufweist, welche den Durchtritt von Flüssigkeit durch die Platte ermöglichen, wobei die Summe der Flächen der einzelnen Öffnungen (38) in dem, bezogen auf die Vertikale, oberen Bereich der Platte pro Quadratzentimeter der Platte größer ist als die Summe der Flächen der einzelnen Öffnungen in dem unteren Bereich der Platte pro Quadratzentimeter der Platte.
摘要:
A separation tank with an outer chamber and an inner chamber within the outer chamber. An inlet and outlet are formed in the outer chamber to receive and discharge water, respectively. An inlet opening is located in the inner chamber and is generally aligned with the inlet to receive water from the inlet. An outlet opening is formed in the inner chamber below the inlet opening but above the bottom of the inner chamber. The inner chamber has a cylindrical interior surface such that water from the inlet is directed at a tangent to the interior surface and forms a vortex as the water progresses through the inner chamber. A baffle plate having an opening forming upper and lower weirs is located within the outer chamber just upstream of the outlet to separate both floatable and non-floatable material from the water prior to its discharge.
摘要:
The invention relates to a settler for decanting mineral slurries and a method thereof. The settler (10) comprises a tank (11) for holding and decanting a body of slurry (15 & 16) to form a thickened slurry as a lower layer (15) and a clarified liquid as an upper layer (16), the tank having a side wall (34), a bottom (36) and a top (14), an outlet (18) for the thickened slurry at the bottom of the tank, an outlet (19) for the clarified liquid layer near the top (14) of the tank, a slurry inlet means (12) near the top of the tank for introducing fresh slurry into the tank, the slurry inlet means having a slurry opening through which fresh slurry joins the body of slurry in the tank, and a stirrer (20) having a generally vertical axis (30) around which the stirrer rotates or reciprocates. The slurry opening (12C) is displaced laterally relative to the generally vertical axis (30) of the stirrer (20) and the slurry inlet means is configured to allow the fresh slurry to enter the slurry body without accumulating solids from the fresh slurry at the slurry opening.
摘要:
A method of promoting the formation of flocs comprising the steps of passing a liquid having suspended particles and an added flocculant as a vortex flow through a tapered conduit where the conduit is circular in cross section and increases in cross-sectional size in the direction of liquid flow through the conduit.
摘要:
A method and apparatus for removing solids separated from wastewater, or algae from algal solution, using an improved dissolved air flotation system that incorporates a slowly rotating cylindrical sieve at the end of an upward sloping beach to drain free water from the float, which has been pushed up the beach and onto the rotating sieve, and a doctor blade that removes the thickened float from the rotating sieve is disclosed.
摘要:
A separation tank with an outer chamber and an inner chamber within the outer chamber. An inlet and outlet are formed in the outer chamber to receive and discharge water, respectively. An inlet opening is located in the inner chamber and is generally aligned with the inlet to receive water from the inlet. An outlet opening is formed in the inner chamber below the inlet opening but above the bottom of the inner chamber. The inner chamber has a cylindrical interior surface such that water from the inlet is directed at a tangent to the interior surface and forms a vortex as the water progresses through the inner chamber. A baffle plate having an opening forming upper and lower weirs is located within the outer chamber just upstream of the outlet to separate both floatable and non-floatable material from the water prior to its discharge.
摘要:
A floating pond skimmer is coupled by a fluid conduit to a remote filter/aerating apparatus. The skimmer sucks a mixture of solids and water, grinds/chops the solids, and pumps the reduced solids and water through the conduit to the filter/aerating apparatus which separates the solids from the mixture and aerates the water from the mixture. The floating skimmer preferably includes a vortex chamber, an on-board pump with a grinding impeller, an adjustable ballast, and an anchor. The filter/aerating apparatus includes an inclined screen and a drain tray beneath the inclined screen coupled to a water discharge conduit. Optionally, an aeration pump is coupled to the discharge conduit. Also optionally, a removable solid waste hopper is located at the lower end of the inclined screen. Otherwise the solid waste simply falls into a compost pile at the bottom of the inclined screen.
摘要:
Abrasive components and clear fluids are separated from an aqueous chemical mechanical slurry used for planarization of semiconductor materials, to permit the reuse of the clear liquid effluent in non-process applications as well as for gray water for irrigation, process cooling water, or as make-up water for a reverse osmosis system, or safe disposal in the industrial waste stream, as desired. A solids detection device determines the concentration of abrasive solids in the aqueous waste effluent stream, and a diverter valve receives and diverts the entire aqueous waste effluent stream to at least one reuse water collection tank when the abrasive solids concentration is below a desired threshold, and diverts the entire aqueous waste effluent stream to at least one concentrate water collection tank when the abrasive solids concentration is greater than or equal to the threshold. With the additional use of ion exchange, the resulting water stream can be reused in high purity water applications.
摘要:
An apparatus for clarifying raw water containing suspended particulate matter comprises an upright conduit (1) with diameters increasing from an inlet for raw water at the top to an exit for clear water at the bottom. The inlet raw water is dosed with coagulant and/or flocculant and aerated with fine air bubbles before entry into the conduit. The bubbles become attached to flocs as they form in the upper part of the conduit. As the liquid descends in the conduit, the flaw velocity decreases enabling the flocs to float counter to the water stream and form a floating body within the conduit which functions as a filter medium. Clear water flows out of the conduit under an underflow weir and the outflowing clear water is raised by an exit duct to a level ensuring the duct remains full of water. Accumulated material is extracted from the bottom of the body through a co-axial discharge duct at a rate substantially equal to the rate of increase of fresh material from the influent raw water so that a steady state condition is achieved.