A flotation device having a flotation tank for receiving liquid to be purified, a saturator for receiving a pressurized liquid-gas mixture and at least one feeder. A line leads from the saturator to the feeder through which the pressurized liquid-gas mixture may be introduced into the flotation tank. The feeder includes a flow channel that has different flow cross sectional areas along the extension thereof. The flow channel may be a Venturi nozzle.

A water treatment system for a poultry chiller including a chiller tank is described herein. The system includes a float holding tank at a downstream section of the chiller tank; a fan at the downstream section of the chiller tank that is configured to blow float formed on a surface of the water in the chiller tank into the float holding tank; and a float removal mechanism at the float holding tank that is configured to remove the float from the float holding tank. Related methods are also described.

An intelligent magnetic microfluidic concentrator employs a technique of feeding ores circumferentially and allowing tailings to overflow centrally upward. The intelligent magnetic microfluidic concentrator comprises a sorting system consisting of an ore feeding chute, an overflow chute, an overflow tank, a sorting tank, and a magnetic system, the overflow tank is disposed at an upper portion of the sorting tank, the ore feeding chute is disposed at the top of the overflow tank, the ore feeding chute feeds an ore slurry to the upper portion of the sorting tank circumferentially along an inner wall of the sorting tank, and the tailings overflow out upward from the overflow tank disposed centrally and located at the upper half portion of the sorting tank. A magnetic microfluidic concentrator and a complete set of beneficiation equipment are also provided.

A method for the decontamination of water containing one or more PFAS contaminants includes injecting a gas through a diffuser and into the water so as to form a plurality of bubbles in the water, the one or more PFAS contaminants accumulating on the plurality of bubbles. The plurality of bubbles is allowed to rise, forming a foam at the surface of the water. The resulting foam is then collected and transported away from the surface of the water, where it condenses into a liquid and can be treated and/or disposed of.

A gas flotation tank is provided that includes a series of adjacent chambers which impart a rotational current therein. Each chamber is separated from a skim oil trough by a skimming weir. Each chamber comprises an alternating fluid communication device between adjacent chambers allowing fluid communication between adjacent chambers in the form of a communication port in the dividing wall between adjacent chambers and a chamber outlet in conjunction with a perforated plate and the outlet is positioned in fluid communication with the final chamber. An optional coalescing media may be positioned in or proximate the communication port to absorb or coalesce contaminants as they pass therethrough.

A system for recovery of animal byproducts and providing water reuse from an animal processing plant waste stream. In one embodiment of the invention there is an equalization tank forming part of an animal processing plant that is mechanically filtered to recover animal byproducts from a water mixture in the equalization tank. In another aspect of the invention there is a skimmer tank that contains a skimmer mixture with water and animal byproducts. The system mechanically separates the animal byproducts from the skimmer mixture in a manner that is suitable for human consumption. The system also allows the separated water to be reused in the animal processing plant.

A method for removing immiscible fluid from contaminated water includes at least one chamber; an injection line in fluid communication with an inlet of the one chamber; bubble generation means in fluid communication with the injection line for injecting gas bubbles into the injection line and allowing mixing in the injection line of the gas bubbles and the contaminated water to form an inlet fluid; an inlet weir within the chamber adjacent the inlet; an immiscible fluid weir within the chamber; a trough for collecting the immiscible fluid and allowing the immiscible fluid to flow out of the at least one chamber through an immiscible fluid outlet; and a cleaned water outlet generally at the bottom of the chamber.

A flotation line for treating mineral ore particles suspended in slurry, including at least three flotation units arranged in fluid connection with each other for allowing gravity-driven slurry flow between flotation units, and a feed inlet for supplying slurry into a first flotation unit; wherein at least three flotation units are configured to be uniplanar, each flotation unit includes at least one flotation cell; and wherein the launder lip height of each uniplanar flotation unit is lower than the launder lip height of the preceding uniplanar flotation unit in the direction of the slurry flow, so that an angle of sloping between a first uniplanar flotation cell, equipped with a launder lip and being larger than 150 m.sup.3, and a last uniplanar flotation cell, equipped with a launder lip and being larger than 40 m.sup.3, is formed; and the angle is 1.5 to 10 degrees relative to horizontal.

The present invention relates to a unit and a method for treating the water-based washing liquid used in or by a washing station of flexographic plates. The unit comprises at least a first tank in which the liquid is collected and in which the monomer or polymer contained in the liquid itself surfaces. The unit further comprises at least a second tank into which part of the liquid contained in the second tank overflows following the opening of barrier means. Such means in closing condition isolate the two tanks. By means of such overflow, a volume of liquid is collected in the second tank, which contains the polymer or monomer previously surfaced in the first tank.

A separation tank for separating a contaminant from a multiple-phase fluid stream has a vessel formed by a top wall, a bottom wall, and a sidewall. The vessel has a plurality of nested and fluidly connected chambers therein. A fluid inlet is in fluid communication with the outermost chamber of the vessel for introducing the multiple-phase fluid stream thereinto. A fluid outlet is in fluid communication with the innermost chamber of the vessel for discharging a contaminant-removed fluid stream out of the vessel. At least one chamber of the vessel has one or more gas inlets at a lower portion thereof for injecting gas bubbles into the chamber for facilitating contaminant removal. In operation, the fluid stream travels from the fluid inlet through the plurality of chambers to the fluid outlet along an elongated helical spiral flow path.