A separation membrane, such as for pressure-assisted oil and water separation. The membrane includes a porous substrate layer and an active layer arranged over at least a part of the substrate layer. The active layer is at least partially crosslinked and comprises a superhydrophilic agent. Also described is a method of producing the separation membrane and a drain valve comprising the membrane.

Coalescer plates, coalescer plate units, and coalescers, are provided. An exemplary embodiment provides a coalescer plate for separating a mixture of immiscible fluids. The coalescer plate comprises a pattern of wetting and non-wetting regions, wherein the pattern is based, at least in part, on phyllotaxis.

Coalescer plates, coalescer plate units, and coalescers, are provided. An exemplary embodiment provides a coalescer plate for separating a mixture of immiscible fluids. The coalescer plate comprises a pattern of wetting and non-wetting regions, wherein the pattern is based, at least in part, on phyllotaxis.

A pool skimmer guard assembly for keeping a pool skimmer free from obstructions includes a rod that is comprised of a resiliently bendable material. In this way the rod can be bent into a U-shape. Thus, the rod can be positioned in an intake of a pool skimmer having the rod curving outwardly from the intake. A pair of grips is each coupled to the rod such that each of the grips is positioned in the intake of the pool skimmer when the rod is bent into the U-shape. Each of the grips has a gripping edge that is perpendicularly oriented with the rod. In this way the gripping edge of each of the grips can engage a respective edge of the intake thereby inhibiting the rod from being dislodged from the intake.

A pool skimmer guard assembly for keeping a pool skimmer free from obstructions includes a rod that is comprised of a resiliently bendable material. In this way the rod can be bent into a U-shape. Thus, the rod can be positioned in an intake of a pool skimmer having the rod curving outwardly from the intake. A pair of grips is each coupled to the rod such that each of the grips is positioned in the intake of the pool skimmer when the rod is bent into the U-shape. Each of the grips has a gripping edge that is perpendicularly oriented with the rod. In this way the gripping edge of each of the grips can engage a respective edge of the intake thereby inhibiting the rod from being dislodged from the intake.

Fluid storage testing systems, methods and apparatus are disclosed. One or more embodiments include a closed-circuit storage volume testing system for testing a storage volume. The system may include a water tank, a pump and an oil/water separator.

Fluid storage testing systems, methods and apparatus are disclosed. One or more embodiments include a closed-circuit storage volume testing system for testing a storage volume. The system may include a water tank, a pump and an oil/water separator.

The present invention relates to a filter media for filtering condensate which includes oily contaminant. The present invention also relates to a filter comprising the filter media. The present invention also relates to a filtration machine comprising the filter media.

The present invention relates to a filter media for filtering condensate which includes oily contaminant. The present invention also relates to a filter comprising the filter media. The present invention also relates to a filtration machine comprising the filter media.

A lifting mechanism for a wastewater plant skimmer arm is provided. The device includes a member. A pair of attaching members are each connected to the member via a hinge. The pair of attaching members are parallel from each other. A skimming member is connected to the pair of attaching members, and parallel to the member. A clamp with a pin is mounted to the member. A flat bar is connected to the clamp and pivots about the pin. The flat bar includes a hook and a plurality of notches. A U-bolt placed on the skimming member includes a rod, that may engage with the hook or a notch of the plurality of notches on the flat bar. The hook may lift the skimming member by engaging with the rod. The desired position of the skimming member may be secured by engaging with a notch of the plurality of notches.