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 apparatus (20) for monitoring flotation performance apparatus comprises an arm (21) having a paddle (22) attached at one end. The apparatus (20) forms a sensor to monitor real-time flotation performance by measuring the drag exerted by the overflowing froth onto a cantilever beam arm. The strain exerted on the beam or arm can be directly correlated to the efficiency of the froth flotation process. Methods for monitoring and controlling a froth flotation process and a method to determine ash content in coal undergoing flotation are also described

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.

A granular litter cleaning apparatus comprises a separation system having a separation tank adapted to receive a mixture of granules and plastic litter, and water therein, the separation tank having a top opening, and a closeable bottom outlet, and at least one water inlet for feeding water to the separation tank. A collect subsystem is for conveying a mixture of granules and plastic litter to the separation tank. A pump system is in fluid communication with the water inlet. The pump system is operated to raise a level of water in the separation tank to skim water with plastic litter out through the top opening of the separation tank. The closeable bottom outlet is openable to empty the separation tank from granules decanted in a bottom of the separation tank. A process for separating plastic litter from granules is also provided.

A spout nozzle for a scum removal device provided in water where scum floats: a tip-end-side nozzle part of a nozzle body is formed in a flat cylindrical shape; a valve body closing a discharging opening by its own weight when pressure water is not supplied is provided in the tip-end-side nozzle part; a closing part closing an opening above the discharging opening when the discharging opening is closed is provided on the valve body; therefore, resistance is small even if it is arranged in water and moreover an interior is hardly stained by scum and the like contained in water.

A floatation separation apparatus includes a stirring tank, a stirring pump installed in the stirring tank, a floatation tank into which flocculated water flows from the stirring tank through an overflow dam, a scraping device (scraper) configured to scrape floating substances in the floatation tank, a treated water tank into which treated water in the floatation tank flows, and a pump and a hose for returning the treated water in the treated water tank to a raw water tank. The stirring pump sucks air and water inside the stirring tank, and discharges water mixed with air bubbles to a lower part of the stirring tank. The height of the overflow dam is adjustable.

A fluidized bed separator (1) includes a feed section (4) between an upper separation chamber (19) and a main separation chamber (6). The feed section (4) has one or more feed pipes (11) extending horizontally and transversely with respect to a body wall (10) of the fluidized bed separator (1). The one or more feed pipes (11) are positioned completely and entirely underneath the inclined plates (17). An external oversize protection apparatus (3) which is separate from and external to the body wall (10) may be operatively coupled to the one or more feed pipes (11). One or more lamella cartridges (49) may be provided within channels (18) of the upper separation chamber (19), and one or more breakaway plates (54, 55) may be inserted within channels (18) to prevent sanding and facilitate insertion and extraction of the lamella cartridges (49).

An insert designed for use with a protein skimmer is disclosed. The insert includes one or more tubes that define an opening with a diameter. This diameter is designed to be smaller than the protein skimmer neck's diameter. The one or more tubes are insertable and retained by the protein skimmer neck to adjust the effective diameter of the protein skimmer neck's opening.

A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation, and thereby enhance FOG recovery and removal. Each flotation zone is equipped with an independent pressurized micro air and ozone bubbles distribution system. A controlled amount of ozone can be injected into the wastewater along with recirculated effluent and micro-size air bubbles. Upon the release of pressurized air-ozone-water mixture, micro-size bubbles are generated and distributed in each flotation zone to effectively float up FOG and solid particles in the wastewater stream.

An apparatus (40) for deaerating a froth comprising a spinning basket (44) mounted on a driven shaft (46). The side walls of the spinning basket have a mesh or openings therein. Froth is supplied to the interior of the spinning basket and contacts the floor of the spinning basket and is flung outwardly through the mesh or openings to break the bubbles and deaerate the froth. A solid all (42) may surround the spinning basket to further assist in deaeration. A spinning plate may be used in place of the spinning basket. In another embodiment, vacuum is used to deaerate the froth.