A hydrocarbon filtration system is provided for removing a contaminant. The filtration system includes a housing unit; a porous compressible filtration media disposing within the housing unit; and a lower and upper perforated plates in between which the porous compressible filtration media is disposed. At least one of the upper or lower perforated plate is movable relative to the other perforated plate for compressing and decompressing the porous compressible filtration media. A coalescence promoting device is positioned within the housing unit and above the upper perforated plate. The coalescence promoting device is configured to promote the coalescence of a hydrocarbon in the housing unit. Also provided is a method of treating hydrocarbon containing fluid by performing a filtration cycle followed by performing a wash cycle to wash a contaminant from the filtration media. During the wash cycle, an upper segment of the housing unit between an upper wall of the housing unit and the filtration media can be a gas-free zone.

Certain embodiments include a screen assembly of a vessel, where the screen assembly includes a plurality of fixed elements and a retainer, and the retainer includes a ring, a plurality of wedges disposed about the ring, and a plurality of keyholes at spaced locations about the ring. Each keyhole includes a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots have a width less than the bores, and the retainer may receive the fixed elements through the bores and may be rotated in a relation with the plurality of fixed elements to bring the plurality of fixed elements into simultaneous engagement with the wedges.

A system for reconditioning contaminated water includes a plurality of filter tanks, each filter tank configured to hold a media mixture comprising media particles to which contaminants adhere when the contaminated water is pumped through the filter tanks and a feed water pump to pump the contaminated water through the plurality of filter tanks. The plurality of filter tanks are configured to form a multistage filter system for filtering the contaminated water at different contaminant particle sizes, and the feed water pump pumps the contaminated water through the multistage filter system in a continuous manner during a normal filtering mode.

A method and apparatus for filtering fluid for a food processing system is disclosed and includes a fluid inlet, a filtered outlet, a drain outlet, two filters-each having inlets, inlet valves, drain outlets, drain valves, filtered outlets, and return valves. A first recycling flow path includes an inlet valve, an inlet, a filter, a return valve, and a filtered outlet. A first drain flow path includes the inlet valve, the inlet, the filter, the drain valve, and the drain outlet. A second set of like flow paths for the second filter is provided. A controller is connected to control each of valves, and the controller has a first filter purge module, a first filter filter module, a first filter power purge module, a first filter off module, second filter purge module, a second filter filter module, a second filter power purge module, and a second filter off module.

A fluid filtration system comprising a cross-flow filter is arranged to permit a first pump to recirculate part of the retentate of the filter to the inlet of the cross-flow filter and a second pump to return part of the permeate to the inlet of the cross-flow filter. A third pump is configured supply source fluid to the inlet of the filter. The flow path between the second pump and the cross-flow filter inlet may include an adsorption filter that may selectively remove contaminants, toxins, or pathogens in the permeate. A controller may control the first, second and third pumps to provide predetermined flow ratios among the fluid flow paths of the system in order to achieve a desired filtration level. This system may be applicable to the removal of harmful substances from blood, by first separating the plasma from the blood and then removing harmful substances from the plasma.

A gas lift conveyance device moves a slurry through an upwardly extending lifting section of a conduit in communication from a source location at a first pressure to a discharge location at a lesser second pressure. A gas injector of the device injects gas into the conduit through a variable position valve that is controlled by a controller that uses a representative value measured by a sensor as input to a closed loop control algorithm of the controller. The representative value may be a pressure or flow rate that is representative of the gas delivery rate. The device provides: (i) automated control over the delivery rate of slurries; (ii) real time values of air rate, valve position, and pressure; (iii) a reduction of energy input due to optimal use of air; and (iv) a reduction in air pumps stalling or plugging failures.

The disclosed invention pertains to a novel device and method for effectively emptying water treatment vessels. This innovation may provide a sturdy, aluminum-framed apparatus featuring a cradle and adjustable legs. The water treatment vessel may be securely fastened onto the cradle after the frame is first adjusted to a suitable height using the device's adjustable legs. A water hose may be attached to the device's fitting, directing water into the vessel for rinsing filter media or resin. The inverted vessel's contents may flow onto a washout tray for collection. This innovative device may enhance stability, ease of use, and safety, making it ideal for emptying water treatment tanks or vessels of varying shapes and sizes.

A system for processing wastewater streams to produce potable water includes a coagulant component that receives a wastewater stream, the coagulation component configured to produce flocculations from residual solids present in the waste water stream; a multi-stage mechanical filter configured to remove the flocculations from the wastewater stream; a disinfection component that receives filtered waste water and disinfects the filtered waste water; and a water distribution and storage component configured to store disinfected water, as potable water, and to maintain the stored disinfected water as potable water and further configured to distribute the potable water to one or more destinations.

A system for processing wastewater streams to produce potable water includes a coagulant component that receives a wastewater stream, the coagulation component configured to produce flocculations from residual solids present in the waste water stream; a multi-stage mechanical filter configured to remove the flocculations from the wastewater stream; a disinfection component that receives filtered waste water and disinfects the filtered waste water; and a water distribution and storage component configured to store disinfected water, as potable water, and to maintain the stored disinfected water as potable water and further configured to distribute the potable water to one or more destinations.

A fluid filtration system comprising a cross-flow filter is arranged to permit a first pump to recirculate part of the retentate of the filter to the inlet of the cross-flow filter and a second pump to return part of the permeate to the inlet of the cross-flow filter. A third pump is configured supply source fluid to the inlet of the filter. The flow path between the second pump and the cross-flow filter inlet may include an adsorption filter that may selectively remove contaminants, toxins, or pathogens in the permeate. A controller may control the first, second and third pumps to provide predetermined flow ratios among the fluid flow paths of the system in order to achieve a desired filtration level. This system may be applicable to the removal of harmful substances from blood, by first separating the plasma from the blood and then removing harmful substances from the plasma.