Abstract:
A liquid recovery unit and method of operating the same useful in the recovery of spilled or leaked liquids. The unit utilizes a base attached to a receptacle. The base has a tank and pump mounted on it. The pump is used to pull a vacuum within the tank to thereby introduce the spilled liquids in the tank or to create a positive pressure within the tank to thereby remove liquids from the tank, or to remove solids from the tank into the receptacle.
Abstract:
A method for purifying fluids and a sedimentation tank, the sedimentation tank includes: a perforated plate spaced from an upper and of the sedimentation tank dividing the sedimentation tank into an upper chamber and a lower chamber; an inlet adapted to inlet fluid into the tank; a first outlet, positioned above the perforated plate for outletting a clarified fraction of the fluid; a second outlet positioned at a bottom of the tank, for outletting a concentrated sludge fraction of the fluid; a pump; and a washing mechanism, positioned at least partially above the perforated plate; wherein the pump is adapted to provide a washing fluid to the washing mechanism when a level of fluid in the sedimentation tank is below a predefined level; and wherein the washing mechanism washes an upper surface of the perforated plate by the washing fluid.
Abstract:
The invention relates to a plant that comprises a vat (100) for separating suspended matter in the form of sludge. The cylindrical vat (100) is provided with a bottom (102) and comprises, from the bottom to the top, a sludge deposition area (Z1) having a flocculation area (Z2) provided on the top thereof, which in turns has an effluent outlet area (Z3, Z4) provided on the top. The bottom (102) includes a passageway (103) for the sludge. An effluent inlet (550) for supplying the vat (100) is formed through the wall (101) thereof in the flocculation area (Z2). The effluent circulation device (400) in the vat (100) includes mobile upright partitions (410) that define, together with the wall (101) and the bottom (102) of the vat (100), effluent compartments (CE) opened at the top and the bottom. The partitions (410) do not extend into the upper portion (Z4) of the vat (100) in order to define the outlet area (104) of the purified effluents (SN). A driving unit (420) displaces the partitions (410) at low speed relative to the wall (101) and the bottom (102) of the vat (100).
Abstract:
L'invention a pour objet un procède de traitement d'eau par floculation (4) / décantation (5) comprenant des étapes d'injection (3) et de recirculation (7) d'un lest caractérisé en ce qu'il comprend une étape de mesure (11) en continu de la concentration dudit lest et une étape de comparaison de ladite mesure avec des valeurs de référence. L'invention a également pour objet une installation de traitement d'eau pour la mise en oeuvre du procédé.
Abstract:
A scum skimmer for collecting only scum using a head of water. The scum skimmer includes a main body having a flotation device, a water introduction passage disposed at the front side thereof, a cave space having an opened top and four closed sides and formed at the rear side of the water introduction passage, and a water collecting container and a scum collecting container respectively formed at the front and rear sides of the cave space by partitioning a partition, and a water collecting device disposed in the water collecting container to receive water and scum on the water surface through the water introduction passage by generating a head of water under the water surface and to discharge the introduced water such that the introduced scum floats and is accumulated on the water surface and overflows the partition to be skimmed in the scum collecting container.
Abstract:
The invention relates to a separator device for separating a first liquid substance from a second substance, the two substances forming a mixture. The apparatus comprises a vessel with an inlet for receiving the mixture, a first outlet for discharge of a first fraction of the mixture, a second outlet for discharge of a second fraction of the mixture and a flow element. The flow element comprises a number of parallel tubular channels defining a flow path for the mixture, the channels having an gilet end for receiving the mixture and an outlet end for discharge of the first fraction, a length direction of the channels being inclined with respect to a horizontal direction, wherein in a transverse cross section through the flow element, the channels form a two-dimensional array of closed cells, each cell defining a boundary of a flow channel, the cells being arranged in at least two rows, each cell in a first row contacting with its perimeter a cell in the second row. The device comprises a return duct from a first outlet to the inlet via a gas mixing device.
Abstract:
The invention provides an axial flow pump (1) for accurately injecting supernatant liquid (2) from adjacent the liquid surface (3) of a thickening tank (not shown) to dilute liquid in a feedwell (4). The pump (1) includes a cup shaped receiving vessel (5) submerged in the supernatant liquid. The pump also includes a submerged impeller (6) mounted on a rotatable shaft (7) for drawing liquid from the vessel (5) and injecting it into the feedwell (4). The shaft (7) is driven by a motor and associated gearbox (not shown). The pump is responsive to system parameters for adjusting the flow rate of the supernatant liquid.
Abstract:
A food disposal system for installation on a drain (12) of a commercial kitchen sink (10) enables segregation of oil/grease from effluent flows from the drain. A housing (32) collects effluents flows containing water, oil/grease, and solids from the drain (12), and a macerating pump (18) has an inlet (19) connected to an opening of the housing that is other than downwardly directed and an outlet connected to a sanitary drain (28). A greasy water outlet extends to an oil/grease separator (32) from an outlet on the housing above the macerating pump inlet (19), and a hot water backflush source enables hot water to flow into the housing.
Abstract:
The present invention consists in a particle classifier for segregating particles of a predetermined size or density range from a suspension of the particles wherein the size and/or density of the suspended particles varies with time, the classifier including: a chamber (1) for receiving a fluid flow (3) in which the particles are suspended; one or more plates (2) mounted within the chamber at an angle to the flow path for segregating particles of a size or density greater than a predetermined minimum from the suspension; means to create uniform flow conditions immediately upstream of the inclined plate or plates; and, means (4, 5, 6) to withdraw the segregated particles from the chamber.