Abstract: An apparatus for washing mud, dirt and silt from the tires of a truck leaving a construction site includes a water supply line, a collection basin and a grate positioned over the collection basin. The apparatus further includes an optional side rail attached to the collection basin above the grate and an optional drainage system comprising a plurality of drain ports formed in the collection basin. Preferably, water from an external water source flows through the water supply line to a selector valve in fluid communication with the grate and the side rail. The grate comprises a plurality of spray tubes having a plurality of spray ports formed therein and the side rail comprises at least one side rail spray tube having a plurality of side rail spray ports formed therein. The selector valve may be positioned to permit water to flow only to the grate, to the grate and the side rail, or only to the side rail.

Abstract: A food washing apparatus comprising a means for generating a sheet-like water jet stream that impinges against foods such as marine products including edible jellyfish, seaweed, shucked or shell-covered shellfish and the like, farm products including vegetables, fruits, and the like by conveying the foods through a water jet stream distribution area or food wash area. A plurality of sheet-like water jet stream layers are generated at a predetermined angle from various directions and impinge against the food surfaces so as to wash them and remove foreign matter such as insects, mud, pebbles, fish scales, etc. from the foods.

Abstract: Disclosed is a dishwasher including, a circulating pump for pressing and then supplying wash liquid, an injection arm for permitting the wash liquid pressed and supplied from the circulating pump to be injected by a predetermined passage structure, an underdrain container for collecting the wash liquid injected from the injection arm and supplying the collected wash liquid to the circulating pump, during a washing stage, a soil collecting chamber having a micro filter with a fine mesh for ramifying and finely filtering the wash liquid supplied from the circulating pump and returning the same to the underdrain container, during the washing stage, a drain pump for allowing the wash liquid to be drained through a drain passage which is extended from the underdrain container, and through a connecting passage which is extended from the soil collecting chamber and connected to the drain passage, during a draining stage.

Abstract: Disclosed is a process of recycling and reusing an aqueous degreasing solution for further use as a component of a coolant solution which is itself recycled and reused in metal cutting machines. Also disclosed is a method of degreasing parts, and a degreasing apparatus which is controlled such that an appropriate amount of the aqueous degreasing solution is introduced into the coolant solution. Finally, disclosed herein is a method and system for preparing a coolant in which an aqueous degreasing solution is further utilized as a feeder solution for a coolant solution, with the resulting solution being able to be separated into its component parts and reused in the cutting and cleaning of metals to form metal parts.

Abstract: A method and apparatus for rinsing and drying semiconductor wafers. The apparatus includes side walls, end walls and a base. At least a portion of the wall descends relative to the base to facilitate the flow of liquid from the chamber. One embodiment of the apparatus includes a rigid side and end walls. In another embodiment of the apparatus, at least a portion of the side wall is collapsible. In yet another embodiment of the apparatus, at least a portion of the wall has a tambour configuration, facilitating bending or rolling of the wall beneath the base. The apparatus includes an assembly for injecting a rinse liquid into the chamber. The method includes placing a semiconductor wafer into a rinse/dry apparatus, directing rinse liquid over the semiconductor wafer, and lowering a side wall of the rinse/dry apparatus to remove rinse liquid therefrom. The apparatus also includes an assembly for injecting a drying fluid into the chamber.

Abstract: A washing and rinsing station intended for treatment of work pieces fastened onto a pallet. The station comprises a pallet table which is arranged to receive and deliver the pallet and to lock it at its place, wherein the pallet table is connected to a rotation axle for turning the work piece by inclining it away from the change position and to the treatment position. At least one pallet table is further connected on said rotation axle in a manner that said pallet tables swivel around the rotation axle at the same time and in the same direction along a circular route, when one pallet table is turned from the change position to the treatment position for washing, cleaning and drainage, wherein another pallet table is arranged at the same time to turn from the treatment position to the change position for a pallet change.

Abstract: The present invention is directed to a system and method for separating waste material from waste water for use in connection with the flushing of an animal storage pen (such as, for example, a hog barn) to remove the waste material from the animal storage pen such that the waste water is recycled. The system includes a fluid storage assembly for storing a supply of fluid for flushing the animal storage pen. The system also includes a large waste material separation assembly for separating large solid waste material from a waste water mixture flushed from the animal storage pen. After the large waste material has been separated from the waste water mixture, a small waste material separation assembly separates the small waste material from the waste water mixture such that the remaining waste water mixture is substantially free of waste material and pathogens. A waste water return assembly supplies waste water from the small waste material separation assembly to the fluid storage assembly.

Abstract: A parts washer is disclosed of the type having a sink, a drum of solvent, and a recirculating system for pumping the solvent from the drum through a hose or nozzle arrangement for spraying the solvent on the parts to be washed in the sink, and then allowing the solvent to drain from the sink back into the solvent drum. In this invention, the solvent drum is fitted with an extra clean-out tube for withdrawing contaminated solvent from the drum, and a return tube for replenishing the drum with clean solvent. The clean-out tube and return tube are fitted with quick-connect couplings for releasably attaching solvent cleaning apparatus thereto, such as filtration or distillation type recycling apparatus.

Abstract: A secondary filter of the present invention is adapted to provide for secondary filtering of wash water that has already been filtered by a primary filter to further remove very fine particles and therefore reduce the deposit of particles on the dishes being washed. The secondary filter is comprised of an annular chamber having an input port in communication with the pump and an output port in communication with the drain. The top of the annular chamber includes a plurality of openings covered by a fine mesh to allow wash water to pass but not fine particles. While the dishwasher is draining, any wash water and particles in the annular chamber will be flushed out through the output port.

Abstract: A waste object containing oil has a first opening formed therein at an upper portion thereof and a second opening positioned below the first opening. The first and second openings are connected to a recovery tank. Hot water of a predetermined temperature is held in the recovery tank and is caused to accumulate inside the waste object via the second opening. Oil that has floated upwards is recovered in the recovery tank via the first opening.

Abstract: A method for recovering impurities on a surface of a silicon wafer includes a first step of using a pretreatment solution to decompose an oxide film, a nitride film on an oxynitridation film formed at a peripheral portion on a surface of a silicon wafer and to remove impurities on the peripheral portion and a second step of recovering impurities on the surface of the wafer expect for the peripheral portion.

Abstract: A dishwasher is provided having a wash pump and soil collection system. The wash pump may be a volute type pump having a horizontal axis and includes a casing surrounding a wash impeller. The casing has a main outlet and a secondary outlet. The wash impeller draws wash liquid from the dishwasher sump region and pumps the wash liquid through the main outlet and the secondary outlet. The wash liquid pumped through the main outlet is provided to a wash arm device such that wash liquid is recirculated throughout the dishwasher interior wash chamber. The wash liquid pumped through the secondary outlet is directed to flow into a soil collector. The soil collector includes a soil separation channel which receives the flow from the secondary outlet and includes at least one filter screen panel for returning filtered wash liquid back into the sump such that soils are retained in the soil separation channel and accumulate within a soil accumulator region.