72results about "Floating sedimentation devices" patented technology

A lint filter having a succession of mesh screens which are arranged in parallel in a tank which receives lint-containing water from a laundry facility. The mesh screens are positioned so that the lint-containing water must pass through the screens in order to leave the tank. The lint-containing water is sprayed evenly on one side of the tank and proceeds across the tank toward the mesh screens. The mesh screens are angled so that lint and particles contained in the lint-containing water are allowed to fall to the bottom of the tank. Multiple exits allow lint-filtered water to leave the lint filter.

This is a method and apparatus for treatment of liquid media making use of at least one float positioned at the top of the liquid and at least one gas diffuser placed under the float and connected to this float by at least one brace, the diffuser is connected to a gas source by at least one flexible conduit. The gas emitted from the diffuser produces a mixture with liquid having density lower than the liquid and the float partially sinks in the liquid thus increasing the submergence of the diffuser and lowering the gas flow through the diffuser. At increased submergence, the gas flow is reduced, the mixture density increases, and the float rises. A repeatable motion up and down of the float-diffuser is established producing pulsations in the liquid. The method and apparatus can be used in a multitude of chemical, pharmaceutical, petrochemical, environmental and other industries for carrying out mass transfer, chemical and biological transformations, phase separations, thickening of suspensions, mixing, suspending of particles, washing, coagulation-flocculation, membrane filtration, filtration across particulate media, filtration across floating media, mass transfer across membrane, and other processes.

The water surface cleaning machine is a self contained unit that travels on a water surface and collects floating debris. This water surface cleaning machine contains a propulsion means for propelling itself across the water. Debris is collected in a net or porous basket. The water surface cleaning machine contains a microcontroller to control its operations. The water surface cleaning machine has a manually operated mode and an automated mode. A radio controller can be used in the manual mode to remotely steer the water surface cleaning machine towards any floating debris for extremely quick and efficient cleaning of a water surface. In the automated mode, the water surface cleaning machine operates without intervention cleaning the pool of water and recharging its batteries. The water surface cleaning machine contains preprogrammed routines for efficiently cleaning the water surface. Switches or pressure sensors located on the exterior of its housing detect contact with external objects and a flow sensor monitors the water surface cleaning machine's motion. The microcontroller is programmed to redirect the water surface cleaning machine if its motion is prevented. The water surface cleaning machine is powered by batteries and solar cells. The microcontroller monitors the battery's charge, the solar cell's output and controls the recharging of the battery. The water surface cleaning machine includes an energy conservation mode to conserve the batteries energy. An analog to digital converter converts input from the batteries, flow sensors and switches to a form useable by the microcontroller.

A random drawing auction system and method based on an entrance fee profit model are provided. In the random drawing auction system and method, information of an item to be auctioned is registered directly or through a seller. An entrance fee of the item is collected from each buyer wishing to bid for the item. A bidder offering a tender price closest to a reference contract price calculated using a random probability function is selected as a successful bidder after a bid for the item is terminated. The tender price offered by the successful bidder is collected from the successful bidder. The item is delivered to the successful bidder, and the collected tender price and an amount of money which is less than an open market selling price of the item in an accumulated entrance fee of the item is given to the seller as a sales payment for the item.

The invention relates to a settler for decanting mineral slurries and a method thereof. The settler comprises a tank for holding and decanting a body of slurry to form a thickened slurry as a lower layer and a clarified liquid as an upper layer, the tank having a side wall, a bottom and a top, an outlet for the thickened slurry at the bottom of the tank, an outlet for the clarified liquid layer near the top of the tank, a slurry inlet means 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 having a generally vertical axis around which the stirrer rotates or reciprocates. The slurry opening is displaced laterally relative to the generally vertical axis of the stirrer 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.

The present invention is a storm water filter system for filtering floatable debris and non-floating pollutants from storm water passing through a storm water drain system vault. The storm water filtering system has a vault having chamber having a wall between the inlet thereto and the outlet therefrom. The wall has a filter passageway therethrough for filtering the storm water and a floatable baffle panel covering a second passageway therethrough for capturing floatable debris and trash from the storm water. Storm water entering the vault inlet passes through a filter element and out the outlet and also can pass under the floating baffle panel when the floatable baffle panel is floated to a raised position to thereby prevent storm water from accumulating on the inlet side of the wall.

A hydrodynamic gravitational separator has an input channel positioned to tangentially direct storm water into collection and treatment cavity while remaining operable in high flow conditions to divert excess storm water directly through to an outlet pipe.

A nonvolatile semiconductor memory device comprises a readout circuit which reads data stored in a selected memory cell by applying predetermined voltage to the selected memory cell and a reference cell such that currents corresponding to the respective threshold voltage may flow, and comparing the current flowing in the selected memory cell with the current flowing in the reference cell. The readout circuit commonly uses the reference cell set in the same storage state for normal readout and for readout for program verification, and when the predetermined voltage is applied to the selected memory cell and the reference memory cell at the time of the readout for the program verification, it sets an applying condition to the reference memory cell such that its storage state may be shifted more in the program state direction than that in an applying condition at the time of the normal readout.

Apparatus for clarifying by flotation a liquid charged with a solid material that includes a tank for holding a quantity of liquid to be clarified. A plurality of U-shaped components are mounted in said tank below the level of the liquid in a relationship so each component is spaced apart a given distance from an adjacent component. Collectors are mounted in the base of each component to either introduce or remove liquid from the component to establish both a concurrent and countercurrent flow about the walls of the components.

Apparatus for removing solids such as sludge from a liquid reservoir comprising a float, a suction head assembly carrying a pump, and elongated guides interconnecting the suction head assembly and float. The float also carries a winch for raising and lowering the suction head assembly. The guides are slidably engaged with the float and serve to indicate the depth of operation of the suction head assembly.

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.

A whirlpool skimming device removes surface debris from a pool by creating a whirlpool having an upper bound at the surface of the pool. The uppermost portion of the whirlpool is free standing and is not bounded by the device. The device includes an outer cup-shaped portion and an inner cup-shaped portion coaxially disposed therein. An opening is disposed in the bottom of the inner cup-shaped portion which communicates with a source of suction which is preferably a Venturi tube feeding the outlet water to a filter bag. There is a first nozzle supplying water at an upper, inner edge of the inner cup-shaped portion at a slightly downward angle in a first direction, and there is a second nozzle supplying water at a lower, outer edge of the inner cup-shaped portion and mounted on an opposite side of the inner cup-shaped portion. The device causes coaxial rotational flow patterns relative to the inner cup-shaped portion, in which the outer rotational flow takes an upwardly spiral path outside the inner cup-shaped portion, and the inner rotational flow takes a downwardly spiral path inside the inner cup-shaped portion of the device.

A method for processing oil from oil wells having water bound locations whereby it is necessary to place the process containment vessels upon host structures that are floating and subjected to a swaying motion caused by the wave action of the water in which the host structures float. The process containment vessels are of a vertical cylindrical configuration to minimize their footprint and to mitigate the effect of tilting on the spatial process geometry inside of the vessels and further the vessels contain internal baffles that create horizontal flow patterns inside of the vertical vessel for a more efficient gravity separation process.

An IC card according to the present invention comprises, a built-in coprocessor for an auxiliary arithmetic in addition to a main arithmetic processing unit, an interval timer for outputting an interrupt request signal upon lapse of a set time shorter than the frame waiting time, and coprocessor control means for controlling the coprocessor operation by suspending supply of an operation clock to the coprocessor in accordance with the output of the interrupt request signal and resuming supply of the operation clock to the coprocessor in accordance with a predetermined response input from an external device. Upon receipt of a command from the external device, the contents of the command are determined, and the time shorter than the frame waiting time is set in the interval timer thereby to start the interval timer.

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.