Disclosed embodiments relate to a grease interceptor for treating wastewater by separating and retaining contaminants. In some embodiments, the grease interceptor may comprise a tank having a top wall, a bottom wall, opposing side walls, an upstream end wall, and a downstream end wall, a baffle extending transversely between the opposing side walls and dividing the tank lengthwise into a first chamber and a second chamber, wherein the baffle comprises, a hollow center compartment having an inflow opening for receiving a flow of wastewater and a slot opening for discharging the flow of wastewater into the first chamber, a first outer compartment and a second outer compartment located on opposing sides of the center compartment, wherein the first outer compartment and the second outer compartment each comprises an inlet opening for receiving the flow of wastewater from the first chamber and an outlet opening for discharging the flow of wastewater into the second chamber. The grease interceptor may further comprise an inflow pipe configured to direct the flow of wastewater from a source to the inflow opening and an outflow pipe configured to direct the flow of wastewater from the second chamber through an outlet standpipe to an outlet.

A method and apparatus for separating the constituents of a drilling fluid into two or more groups based on particulate size and specific gravity in a continuous flow process.

An apparatus for separating a liquid from other substances comprises a first chamber; a second chamber; an inlet connected to the first chamber; an outlet connected to the second chamber; a bypass conduit passing from the inlet, through the first chamber, and into the second chamber; a passage between the first and second chambers and configured to allow the liquid to flow from the first chamber to the second chamber, the passage below the bypass conduit; wherein the bypass conduit comprises a first opening within the first chamber and a second opening in the second chamber; and wherein the bypass conduit is angled relative to a horizontal so that a lowest region of the second opening is higher, in relation to the horizontal, than a highest region of the first opening, such that liquid flow into the inlet, less than a treatment flow rate, flows entirely through the first opening.

The present invention discloses an improved multiple filtration cartridge assembly comprising filter cartridges with internal riser tubes mounted on a collection rail via rail couplers. Within this configuration, at least one internal riser tube contains a drain down orifice which corresponds to a matching drain down orifice on the rail coupler. The disclosed assembly increases the lifespan of the filter cartridges. Further, the multiple filtration cartridge assembly may be configured as a filtration mechanism within a variety of Structural Best Practice Management water filtration systems.

The present invention supplies partitioned water treatment systems that possess a plurality of chambers and vertical filtration units, and are operative to control and filter surface runoff water. Such systems are typically placed inline with surface runoff water conveyance system infrastructure, such as pipes, channels, and water storage units.

A separation apparatus that includes a weir tank having a plurality of cells and fluid removal apparatus for each cell to remove the fluid from each cell. The fluid removal apparatus includes an actuator and an extension arm whose movement is caused by the actuator. In addition to the actuator and the extension arm, the fluid removal apparatus includes a plunger attached to the extension arm for selectively engaging a first opening in each cell. Furthermore, a method of removing fluid from the separation apparatus via the fluid removal apparatus.

The present invention supplies partitioned water treatment systems that possess a plurality of chambers and vertical filtration units, and are operative to control and filter surface runoff water. Such systems are typically placed inline with surface runoff water conveyance system infrastructure, such as pipes, channels, and water storage units.

A method and apparatus for separating the constituents of a drilling fluid into two or more groups based on particulate size and specific gravity in a continuous flow process.

The present invention supplies partitioned water treatment systems that possess a plurality of chambers and vertical filtration units, and are operative to control and filter surface runoff water. Such systems are typically placed inline with surface runoff water conveyance system infrastructure, such as pipes, channels, and water storage units.