An apparatus for filtering fluid has a container, a platform positioned in the interior volume of the container in a location above a bottom of the container, and a bag filter extending through a hole in the platform. The bag filter has an inlet and an outlet. The inlet is positioned at or above a top surface of the platform and an outlet positioned below the top surface of the platform such that a fluid passing through the fluid inlet of the container flows into the inlet of the bag filter and outwardly of the outlet of the bag filter so as to flow toward the fluid outlet of the container. A retainer plate is positioned over the platform and has an orifice opening to the inlet of the bag filter.

The invention provides an apparatus and method for purification of a fluid, the apparatus comprising: a vessel (1) for receiving, in operation, a filter bed (2) with granular filter material; a transport system (8) configured to, during operation, transport filter material from a cavity (5) underneath the filter bed (2) to a location (17) above the filter bed; a fluid inlet (14) for introducing fluid to be purified into the apparatus; a mixing section (3) adapted to, in operation, provide a mixture of fluid from the fluid inlet and granular filter material from the filter bed in a part of the vessel beneath the mixing section; and a plurality of gas lift injectors (4), wherein each gas lift injector (4) is configured to, in operation, transport the mixture of fluid from the fluid inlet (14) and granular filter material from the filter bed (2) to the cavity (5).

An aquarium filtering and purifying system includes an upper display tank and a lower filter tank. The water from the upper tank can be delivered to the lower tank to a filter, such as within a surrounding filter fabric or membrane, such as a filter sock. An air tube can also be inserted into the filter tank to an unfiltered side of the filter, such as within the filter sock, to deliver air bubbles into the filter tank. The air tube can have an air stone at the end thereof to diffuse the air bubbles. Further air stones can be provided on an outside of the sock in the first compartment. Filtered water is delivered to a second compartment in the filter tank. The next compartment can have sand, and/or rocks and/or algae and/or a clean-up crew to assist in purifying the water. Water from the second compartment then passes to a third compartment, through a bubble trap, and then is pumped back to the display tank. Alternatively, the first compartment can be provided with a macro algae bed instead of a filter sock.

The present invention is directed to a mobile sink assembly including a container partitioned into two compartments with an overflow aperture in a dividing wall providing fluid communication between an upper compartment and a lower compartment. There is a first trap in the top opening of the upper compartment and a second trap positionable below the first trap. There is a riser and valve assembly coupled to the draining aperture in the first trap and configured to control a flow of liquid from the first trap. There is a pump that pumps fluid from the lower compartment to the first trap. In this way water recirculates through the traps while particulate matter is retained in the first and second traps.

A disc filter includes a filtrate holding tank disposed below a series of disc-shaped filter members supported on a drum. Filtrate from the holding tank is used to backwash filter media on the disc-shaped filter members. Filtrate is discharged from the holding tank via a filtrate conduit. Bypass water is directed through a bypass conduit in the disc filter and mixed with the filtrate downstream of the filtrate holding tank. This assures that the filtrate used to backwash the filter media does not include bypass water.

The sanitizer includes an elongated semi-cylindrical tank that houses heated process water and a close-fitting auger to move food products from the inlet end of the tank to the outlet end. Heated process water at a temperature sufficient to sanitize the food product is introduced into the tank at the outlet end of the tank to flow through the tank counter to the direction of flow of the food product. A recirculation and filter system filters out the particulates in the process water. A hood assembly is positioned over the tank to contain the air borne moisture generated during the sanitizing process and route the steam away from the tank. A control system controls the operation of the sanitizer, including, for example, the speed of the auger, the volume of process water in the tank, and the temperature of the process water in the tank.

A filtration unit (100) configured to remove microparticles from a water stream from at least one washing machine (WM) is provided. The filtration unit comprises an inlet (110) configured to deliver a water stream (WS) from at least one washing machine (WM), a water reservoir (120) configured to receive the water stream (WS) from the inlet (110), a separator module (130) fluidly connected to the water reservoir (120), wherein the separator module (130) is configured to separate microparticles (MP) from the water stream (WS) creating a filtered water stream (FWS), and an outlet (150) configured to allow the filtered water stream (FWS) to leave the filtration unit (100). A method for removing microparticles from a water stream is also provided.

A system for separating solids from fluids, the system including a separator having a deck having a feed inlet and a solids outlet and a plurality of screens disposed on the deck. Also, an image sensor disposed proximate the solids outlet, the image sensor to capture images of the separator, and send the captured mages to a remote location for analysis. Additionally, a method of monitoring a separator, the method including capturing an image of the separator and sending the image of the separator to a control module disposed at a remote location. The method also including analyzing the image with the control module to determine a separation property and modifying the operation of the separator based on the determined separation property.

A filter device, in particular for processing, for example for filtering, backflush quantities which originate from a filter which can be arranged upstream of the filter device, having a primary stage for receiving the respective backflush quantity, a secondary stage for filtering off the backflush quantity from the primary stage, and a tertiary stage for returning the purified backflush quantity into a process circuit, wherein a flow divider is inserted in the primary stage and, if a predeterminable fluid quantity in the primary stage is exceeded, forwards the associated excess quantity into the tertiary stage while bypassing the secondary stage.

A downspout drain filter includes a housing and a filter media. The housing defines an internal cavity, an inlet to the internal cavity along a top of the housing, and an outlet from the internal cavity along a bottom of the housing. The filter media is disposed within the internal cavity. The filter media divides the internal cavity into an upper chamber and a lower chamber. The filter media is configured to trap debris in the upper chamber from fluid flowing downward through the internal cavity. The filter media is permeable such that the fluid flows from the upper chamber to the lower chamber.