An apparatus senses the proportion of FOG flowing with effluent from a sink to a p-trap. A pipe portion is connectable for use as a tailpipe for a sink with a first electrode within the pipe portion and a second electrode outside the pipe portion. Conductors connect the first and second electrodes to a capacitance sensor, so changes in capacitance between the electrodes caused by changes in proportions of FOG content in effluent from the sink can be detected and/or monitored. The monitoring can be remote and can cause an action when an excess FOG content is detected.

An apparatus senses the proportion of FOG flowing with effluent from a sink to a p-trap. A pipe portion is connectable for use as a tailpipe for a sink with a first electrode within the pipe portion and a second electrode outside the pipe portion. Conductors connect the first and second electrodes to a capacitance sensor, so changes in capacitance between the electrodes caused by changes in proportions of FOG content in effluent from the sink can be detected and/or monitored. The monitoring can be remote and can cause an action when an excess FOG content is detected.

A grease interceptor and method of use thereof is provided for separating solids, fats, oils, and grease waste (“F.O.G.”), and other particulate matter. The grease interceptor receives waste water in a liquid storage area where solids in the waste water have residence time long enough to gravitationally separate towards the bottom of the liquid storage area and waste that is less dense than water floats to the top of the liquid storage area. A series of features including channels, interrupter plates, and walls can increase the residence time or otherwise improve the separation of waste from the water. In addition, embodiments of the grease interceptor can have tapered access holes that improve visual inspection of the liquid storage area of the grease interceptor.

A grease interceptor and method of use thereof is provided for separating solids, fats, oils, and grease waste (“F.O.G.”), and other particulate matter. The grease interceptor receives waste water in a liquid storage area where solids in the waste water have residence time long enough to gravitationally separate towards the bottom of the liquid storage area and waste that is less dense than water floats to the top of the liquid storage area. A series of features including channels, interrupter plates, and walls can increase the residence time or otherwise improve the separation of waste from the water. In addition, embodiments of the grease interceptor can have tapered access holes that improve visual inspection of the liquid storage area of the grease interceptor.

Vaults, boxes, systems, and methods of treatment systems to capture pollutants from storm water runoff and prevent the conveyance of these pollutants from entering a receiving water body or landscape area, which is designed to be a part of a local permanent storm water drainage infrastructure. A single treatment box, vault and system combines both drainage conveyance, multi-level treatment techniques, variable hydraulic capabilities, and easy and inexpensive methods for servicing the system. A flow spreader having a triangular shape with straight sides, or concave sides or convex sides can split incoming water to pass into dual screen filtration systems. Additionally, an upwardly angled debris ramp above a downwardly angled screened defector can be located on both sides of the flow spreader to help direct debris and trash into dual screened boxes. The system can also include components selected from a shelf beneath the spreader, at least one baffle, skimmer, deflectors, media filtration and hydroslide water pressure lines with spray heads for cleaning debris on a sloped floor.

Vaults, boxes, systems, and methods of treatment systems to capture pollutants from storm water runoff and prevent the conveyance of these pollutants from entering a receiving water body or landscape area, which is designed to be a part of a local permanent storm water drainage infrastructure. A single treatment box, vault and system combines both drainage conveyance, multi-level treatment techniques, variable hydraulic capabilities, and easy and inexpensive methods for servicing the system. A flow spreader having a triangular shape with straight sides, or concave sides or convex sides can split incoming water to pass into dual screen filtration systems. Additionally, an upwardly angled debris ramp above a downwardly angled screened defector can be located on both sides of the flow spreader to help direct debris and trash into dual screened boxes. The system can also include components selected from a shelf beneath the spreader, at least one baffle, skimmer, deflectors, media filtration and hydroslide water pressure lines with spray heads for cleaning debris on a sloped floor.

An oil containment system and installation method for a transformer mounted on a transformer pad, comprising a plurality of interlocking open-topped containment units. Each of the containment units having a base, a sump formed with two vertically-aligned sidewalls, a first end, and a second end. The sidewalls have support struts extending across the sump and a grate member. At least one of the ends includes a connecting member or a receiving member, the connecting member sized to be placed within the receiving member sized to interlock adjacent containment units. A discriminative outlet is disposed within an opening in the sidewall and includes a filtration media for adsorbing oil from a fluid and subsequently blocking oil flow through the discriminative outlet. The interlocking containment units are secured to the transformer pad around a peripheral edge to restrict the migration of oil to an outside portion of said oil containment system.

An oil containment system and installation method for a transformer mounted on a transformer pad, comprising a plurality of interlocking open-topped containment units. Each of the containment units having a base, a sump formed with two vertically-aligned sidewalls, a first end, and a second end. The sidewalls have support struts extending across the sump and a grate member. At least one of the ends includes a connecting member or a receiving member, the connecting member sized to be placed within the receiving member sized to interlock adjacent containment units. A discriminative outlet is disposed within an opening in the sidewall and includes a filtration media for adsorbing oil from a fluid and subsequently blocking oil flow through the discriminative outlet. The interlocking containment units are secured to the transformer pad around a peripheral edge to restrict the migration of oil to an outside portion of said oil containment system.

A solid waste interceptor for a drain includes a tank for collecting waste water therein, the tank having a waste water inlet and a waste water outlet, a tray housing a strainer basket being slidably mounted within the tank, in the manner of a drawer, to be moved between a closed position in which the strainer basket receives waste water from the waste water inlet, and an open position in which the tray extends from the tank to provide access to the strainer basket to facilitate emptying of collected solid waste therefrom. The tray is provided with a drain outlet for delivering waste water passing through the strainer basket into a sump of the tank, and the drain outlet spigot is adapted to abut a front wall of the tank when the tray is in its open position to delimit the open position of the tray.

A solid waste interceptor for a drain includes a tank for collecting waste water therein, the tank having a waste water inlet and a waste water outlet, a tray housing a strainer basket being slidably mounted within the tank, in the manner of a drawer, to be moved between a closed position in which the strainer basket receives waste water from the waste water inlet, and an open position in which the tray extends from the tank to provide access to the strainer basket to facilitate emptying of collected solid waste therefrom. The tray is provided with a drain outlet for delivering waste water passing through the strainer basket into a sump of the tank, and the drain outlet spigot is adapted to abut a front wall of the tank when the tray is in its open position to delimit the open position of the tray.