A floating weir skimmer comprises a collecting box (10), a weir plate (11) and an inner buoy (5). Said collecting box (10) comprises a baffle plate (3) and a trough (1). A guide rail (6) is arranged inside said trough (1). An inner buoy (5) is arranged inside collecting box (10), and a guide pulley (14) is arranged on said inner buoy (5), enabling said inner buoy (5) to slide on said guide rail (6). A supporting member is further arranged on said inner buoy (5). One end of said weir plate (11) is carried by said supporting member, and the other end is in rotation connection with said trough (1).

A contaminant recovery device comprising a container sized to hold a body of contaminated liquid. A skimming arrangement adaptable to at least temporarily remove contaminants from the body of contaminated liquid and an assembly for inducing a flow in at least part of the body of contaminated liquid at or about the skimming arrangement. The skimming arrangement is adaptable to at least temporarily remove contaminants from around the surface of the body of contaminated liquid.

A mechanical separator for separating a fluid sample into first and second phases within a collection container is disclosed. The mechanical separator may have a separator body having a through-hole defined therein, with the through-hole adapted for allowing fluid to pass therethrough. The separator body includes a float, having a first density, and a ballast, having a second density greater than the first density. A portion of the float is connected to a portion of the ballast. Optionally, the float may include a first extended tab adjacent a first opening of the through-hole and a second extended tab adjacent the second opening of the through-hole. In certain configurations, the separator body also includes an extended tab band disposed about an outer surface of the float. The separator body may also include an engagement band circumferentially disposed about at least a portion of the separator body.

A large capacity immiscible liquid separator adapted for placement in the ground, rather than under the sinks of food processing facilities. The liquid separator has a large oil compartment that can be vacuum suctioned to empty the contents thereof. Large volumes of the immiscible liquid influent can be processed without the use of a ball-type valve. A large circumference weir allows a large volume of separated waste water to overflow to the sewer system. The weir can be H-shaped to provide a large circumference and thus accommodate large separated waste water flows thereover.

An immiscible liquid separator for maintaining a desired liquid relationship between an oil spillover and a water spillover irrespective of a tilt angle of the separator. The use of the separator is thus well adapted for use on ships and the like. The separator includes a cylindrical weir having an open top over which separated water spills when waste liquid is drained into the separator. The separator also includes a cylindrical oil stack having an open top over which separated oil spills when waste liquid is drained into the separator. The cylindrical oil stack is located within the cylindrical water weir, thus allowing the separator to function as desired independent of the angle of tilt of the separator.

An oil-water separator for separating mixed density fluids, such as oil and water, oily sediment laden water and the like, as well as portable, in-tank and towable and anchorable boom containment systems kits and methods employing the same. The oil-water separator employs at least two oil-separation chambers operating in opposing but synergistic separation modes in parallel. The oil-separation chambers alternate distribution of a single mixed fluid density stream between the chambers using a partial vacuum source to draw the stream into one chamber, while concurrently stopping inflow of the stream into another chamber by removing the vacuum source. The apparatus allows each chamber to switch back and forth between (a) actively separating and removing less dense fluid (e.g., oil) when the partial vacuum is applied, and (b) passively separating the less dense fluid (e.g., oil) and removing the more dense fluid (e.g., water) when the partial vacuum source is removed. The oil-water separator can be adapted for multiple different uses, including rapid deployment cleanup kits that are sufficiently lightweight and compact for easy transport, access and application.

A system and method for extracting oil from a fluid mixture includes a separation vessel having an internal chamber that extends to a chamber elevation, an inlet port, a water outlet port, and an oil outlet port. A liquid storage tank has an inlet port, an upper outlet port located at an upper outlet elevation, and a lower outlet port. A first conduit system interconnects the separation vessel's water outlet port and the tank's inlet port and has a top conduit segment at the upper outlet elevation. A second conduit system interconnects the first conduit system and the tank's inlet port. The second conduit system intersects the first conduit system below the upper outlet elevation and above the chamber elevation. A pump may be employed to transfer fluid from the upper outlet port back to the separation vessel.