A washing machine including a drainage pump to discharge water from a tub of the washing machine through a drainage passage, a first filter to which the water flows due to the drainage pump and provided along the drainage passage to filter out foreign matter equal to or greater than predetermined size, and a second filter to which the water flows from the first filter and provided along the drainage passage and to filter out foreign matter smaller than the predetermined size, wherein the drainage passage includes a first connecting hose to guide the water to flow from the tub to the first filter, a second connecting hose to guide the water to flow from the first filter to the second filter, and a drainage hose to guide the water to be discharged from the second filter to the outside of the washing machine.

A filter system has a chamber body, an inlet that extends through the chamber body, and an outlet that extends through the chamber body at a location downstream of the inlet. The filter system has a plurality of fluid flow paths that extend between the inlet and the outlet. The plurality of fluid flow paths including first and second subsets, each including at least a respective one of the fluid flow paths. A plurality of hydrocarbon filters is disposed in the chamber body such that each hydrocarbon filter is disposed in a fluid flow path. The filter system directs the fluid to the first subset, and once each hydrocarbon filter of the first subset becomes saturated with hydrocarbons, the filter systems diverts the fluid to flow to the second subset.

A multi-bank cooking system includes multiple discrete cooking systems sharing common plumbing and integrated safety features. The multi-bank cooking system may include two or more rack-fryer systems, each with discrete frypots, operating mechanisms and cooking controllers. Each of the discrete cooking systems, may share a common plumbing system with integrated valves and controls receiving coordinated safety signals to facilitate safe and efficient operation of the system.

The “sludge dehydrator” equipment is a machine that permits to remove low turbidity water from sludge or watery pastes of industrial or mining origin, with the following objectives: To optimize ore recovery processes such as flotation by means of an increase of the sludge density; To thicken sludge or watery pastes for optimizing the filtering and drying processes, as well as to dispose of mining tailings; To concentrate and dispose of solids in suspension and to recover and recycle clean or clarified water. The “sludge dehydrator” equipment has been designed on the basis of a rectangular tank provided with the necessary infrastructure for containing inside a series of suction plates being connected to a vacuum system, through which the process of solid-liquid separation is carried out and, on the other hand, to contain the cleaning mechanism—the cleaning car—with its motor system made up by pneumatic or hydraulic components required to clean suction plates the filtering medium and to keep them permanently operative. In accordance with the “sludge dehydrator” feeding and the design of the lower or bottom cone of the rectangular tank will benefit to be derived from the industrial and mining operation.

A capacitive sensor and control system is configured to detect the presence (or absence) of a filter pan and of fluid within a filter pan. Configured in a filter pan of a deep fryer, the sensor determines when a level of liquid within the filter pan is at or above the level of the. The sensor is in communication with the control system and the sensor sends a signal to the control system representative of the presence of liquid within the filter pan and at the level of the sensor. The controller receives the signal from the sensor, and allows operation of a fluid management system and its associated plumbing to completely and safely move oil into and out of the filter pan.

A resist coating apparatus including a resist supplying system; a resist filtering system having a first filter, a second filter, and a pump between the first filter and the second filter; and a resist dispensing system, wherein the first filter includes a plurality of first unit filters connected in parallel.

In a wastewater treatment plant a rag seeding tank is included in a process drain to collect hair and fibers which have passed through headworks of the plant. The hair and fibers tend to join together into large masses downstream of the headworks and can be damaging to process zones, particularly membrane zones. The rag seeding tank includes cartridges filled with surfaces that fibers and hair will attach to, so that hair/fiber rags grow in the seeding tank and are removed therefrom rather than causing problems downstream.

In a gravity fluid filtration system, upper and lower fluid reservoirs may be mated together. Unfiltered fluid may be supplied to the upper reservoir. One or more filters provide fluid communication between the upper and lower fluid reservoirs. Fluid may pass through the filters into the lower fluid reservoir. The weight of the fluid in the gravity filtration system may be monitored to maximize the fluid flow rate without loss of fluid by supporting the fluid reservoirs on a moveable platform interconnected to a stationary base by a force reactive linkage. Automatic fill components may be provided for automatically actuating a fluid supply valve connected to an unfiltered fluid source. As filtered fluid is withdrawn from the lower reservoir, actuation of the fluid supply valve to an open position may permit unfiltered fluid to be supplied to the upper reservoir. Supply of unfiltered fluid to the upper reservoir may be stopped upon actuation of the fluid supply valve to the closed position. Actuation of the fluid supply valve is a function of the weight of the fluid in the filtration system and/or vertical travel of the moveable platform.

A water treatment system is provided with an untreated water reservoir having a cavity through which a filter assembly may traverse such that untreated water in the cavity passes through the filter assembly into a treated water reservoir. Traversal of the filter assembly may be facilitated by a pressure control assembly configured to generate a vacuum.

A particle separation system may comprise a vessel having at least one side wall and a bottom wall forming an internal chamber within the vessel, a filtration unit positioned within the vessel and including a first filtration pack including a first plurality of filter elements, an inlet for moving pre-separated fluid into the vessel, and an outlet in fluid communication with the filtration pack for moving processed fluid out of the vessel, a rate of pre-separated fluid flow into the vessel and a rate of processed fluid flow out of the vessel each being between about 10 and about 1000 gallons per minute (GPM) and a flux within the filtration unit is less than or equal to about 0.05 gallons per minute per square foot (GPM/ft.sup.2).