A mobile oil filtration system includes a mobile oil reservoir having a plurality of wheels; a housing secured to the mobile oil reservoir; an input conduit secured to the housing; a pump in fluid communication with the input conduit; a spring-loaded filter downstream from and in fluid communication with the pump; a bag filter downstream from and in fluid communication with the spring-loaded filter; and an output conduit secured to the housing and in fluid communication with the bag filter.

Provided is a filtering apparatus configured to interact with objects of interest within a medium. The properties of the filtering apparatus can be configured to modify the trajectory of individual objects of interest which interact with the filtering apparatus within several orders of magnitude of the mean free path of objects of interest. Surfaces of a filtering apparatus can be constructed to preferentially redirect objects of interest in a desired direction, such as a direction substantially parallel to a surface, or substantially along the length of a channel connecting two reservoirs. This can modify the net diffusion of objects of interest relative to the surface, which can modify the bulk fluid flow velocity magnitude along the surface. This can be employed to reduce the viscous drag on a surface moving relative to a fluid, or to generate thrust, or to convert thermal energy of a fluid into useful work.

A chemical liquid purification apparatus includes a tank body, a return tube, a liquid sending pump, a filtration device and a piping. The tank body has a liquid passage port and a circulation port communicated to a storage space inside the tank body. The return tube has one end connected to the circulation port and another end extending to the storage space. The liquid sending pump and the filtration device are located outside the tank body in between the liquid passage port and the circulation port. The piping is connecting the liquid sending pump and the filtration device to the liquid passage port and the circulation port.

This disclosure relates to a system for the collection and removal of fats, oils, and greases (FOG) including a collection container including a sealable liner having a bag shape and configured to be inserted into the interior of the collection container and removable from the collection container. The system may also include a collection receptacle and a receptacle cover retractably attachable to the collection receptacle and configured to cover the top opening, a bag trough disposed within the receptacle interior, a filter screen to filter FOG, a liner basket contained in the collection interior configured to hold liner(s) for removal from the collection receptacle; a bag wiper configured to push the liner from the bag trough into the liner basket, and a tank heater configured to heat the receptacle interior.

A pool cleaner includes a housing with a plurality of inlets to enable inflow of water from a pool into the housing, and at least one outlet to enable outflow of water from the housing. A suction mechanism is configured to draw water into the housing through the inlets, and to expel the water through the outlet. A propulsion mechanism is configured to propel the pool cleaner over a floor of a pool. A controller is configured to control operation of at least the propulsion mechanism. A filter is configured to trap debris in the water that is drawn into the housing. An inlet control mechanism is configured to selectively enable the inflow of the water via a selected inlet of the plurality of inlets while preventing inflow through at least one other inlet of the plurality of inlets.

A transportable separation apparatus for separating spent materials from oil and gas operations into a primarily solid component, a primarily liquid component and a primarily gas component. The transportable separation apparatus includes a first separation unit disposed on the transportable separation apparatus for receiving spent materials and beginning separation of the spent materials. The transportable separation apparatus connectable to a vehicle to be pulled on commercial roadways when the transportable separation apparatus is in a transportation configuration. The transportable separation apparatus further includes a second separation unit in fluid communication with the first separation unit for further separation of the spent materials. A method of using the transportable separation apparatus to separate spent materials.

A pool cleaner includes a housing with a plurality of inlets to enable inflow of water from a pool into the housing, and at least one outlet to enable outflow of water from the housing. A suction mechanism is configured to draw water into the housing through the inlets, and to expel the water through the outlet. A propulsion mechanism is configured to propel the pool cleaner over a floor of a pool. A controller is configured to control operation of at least the propulsion mechanism. A filter is configured to trap debris in the water that is drawn into the housing. An inlet control mechanism is configured to selectively enable the inflow of the water via a selected inlet of the plurality of inlets while preventing inflow through at least one other inlet of the plurality of inlets.

A transportable separation apparatus for separating spent materials from oil and gas operations into a primarily solid component, a primarily liquid component and a primarily gas component. The transportable separation apparatus includes a first separation unit disposed on the transportable separation apparatus for receiving spent materials and beginning separation of the spent materials. The transportable separation apparatus connectable to a vehicle to be pulled on commercial roadways when the transportable separation apparatus is in a transportation configuration. The transportable separation apparatus further includes a second separation unit in fluid communication with the first separation unit for further separation of the spent materials. A method of using the transportable separation apparatus to separate spent materials.

A transportable separation apparatus for separating spent materials from oil and gas operations into a primarily solid component, a primarily liquid component and a primarily gas component. The transportable separation apparatus includes a first separation unit disposed on the transportable separation apparatus for receiving spent materials and beginning separation of the spent materials. The transportable separation apparatus connectable to a vehicle to be pulled on commercial roadways when the transportable separation apparatus is in a transportation configuration. The transportable separation apparatus further includes a second separation unit in fluid communication with the first separation unit for further separation of the spent materials. A method of using the transportable separation apparatus to separate spent materials.

A filter holder for holding an open ended filter having an open proximal end and an open distal end in an operative position on a swimming pool cleaner having a pipe stub for receiving one open end of the filter is shown and described. The filter holder includes a cap for covering one open end of the filter, a coupler configured to cooperate with and engage the pipe stub, and a spanning connector configured to span and connect the cap and the coupler outside the pipe stub of the filter. The coupler may include L-shaped brackets. A constricting collar pins the brackets to the pipe stub. The spanning connector may include compression rods and nuts. The filter holder may include an optional adapter collar separable from the coupler, to adapt diameters of the coupler and the pipe stub. The invention may alternatively be considered to be a mobile swimming pool cleaner having a pleated medium filter rather than a flaccid bag filter.