Abstract: A mixed fluid separator apparatus includes an overload protection chamber that prevents a large and sudden influx of oil from fouling a coalescing separator. To prevent sudden influx of a large concentration of oil from overwhelming the coalescing separator, a separate overload protection chamber is connected to a main coalescing separator apparatus. The overload protection chamber includes a water drain (majority water with some oil) to the main coalescing separator apparatus and an oil overflow (majority oil with some water) to drain excess oil when necessary to prevent overfilling of the coalescing separator apparatus. The overload protection chamber functions to rapidly separate and remove heavy concentrations of oil, protecting the main coalescing separator apparatus.

Abstract: In an embodiment, a coalescing separator apparatus includes a containment well configured to include a coalescing media an inlet on a first end wall and an outlet on a second end wall; a surface-skimming drain disposed in the containment well; and a modular weir comprising a weir front wall, a weir middle wall, and a weir back wall, each of which are coupled to two opposing weir side walls, a through-hole being disposed in the weir back wall, through which the outlet is disposed. A modular weir and method for quickly replacing, maintaining, or repairing a weir in a coalescing separator apparatus is also described.

Abstract: In an embodiment, a coalescing separator apparatus includes a containment well configured to include a coalescing media an inlet on a first end wall and an outlet on a second end wall; a surface-skimming drain disposed in the containment well; and a modular weir comprising a weir front wall, a weir middle wall, and a weir back wall, each of which are coupled to two opposing weir side walls, a through-hole being disposed in the weir back wall, through which the outlet is disposed. A modular weir and method for quickly replacing, maintaining, or repairing a weir in a coalescing separator apparatus is also described.

Abstract: The coalescing separator apparatus includes a containment well including a coalescing media therein; an inlet for a fluid mixture, and an outlet for clean water. The inlet and outlet disposed on opposite sides of the coalescing media. The containment well also includes a variable-height weir and an outlet weir. The variable-height weir is coupled to a surface-skimming drain. The outlet weir includes a front wall and a middle wall, the outlet being disposed behind the middle wall, and the height of the front wall is higher than the height of the middle wall. The variable-height weir is configured to be vertically movable and set to a position from a minimum height and to a maximum height, the height being determined with reference to a bottom wall of the containment well. A method for skimming oil and other fluids from water or other fluids is also provided.