Rake systems for cleaning water streams and new and novel components for such rake systems.

The present invention relates to a rotary pressure filter comprising a filter drum, a housing, and at least one separating element which divides a process chamber in a gas-tight manner into a plurality of process portions. A sensor is arranged on the side of at least one separating element that faces the housing. The sensor comprises a coil and a rod which is arranged inside the coil. The rod is designed to be displaced in the coil on the basis of a change in the distance of the separating element from the sensor. The invention further relates to a method for detecting wear of a separating element of a rotary pressure filter.

A stormwater treatment device includes a tank defining an internal volume and having an inlet and an outlet, a rotatable screen unit mounted within the tank, the rotatable screen unit defining a through path with an inlet end and an outlet end. The rotatable screen unit includes a screen structure with a plurality of screening openings for allowing passage of at least some stormwater from the through path outwardly through the screen structure while inhibiting passage of at least some trash items through the screen structure such that the trash items move along the through path from the inlet end to the outlet end. The stormwater treatment device may include both a normal treatment flow path and one or more bypass treatment flow paths.

A method may include providing a rake system with a framework, a chain having a plurality of skimmers, an elongated rail, a first support arm, a second support arm, a first guide device, a second guide device, and/or a screen, rotating the chain, receiving debris between the chain and the screen, and/or moving the debris along the screen, via a skimmer of the plurality of skimmers, to discard the debris.

The present disclosure provides advantageous rotary interfaces for fluid assemblies (e.g., rotary interfaces for fluid flow in bioreactor applications), and related methods of fabrication and use. More particularly, the present disclosure provides improved rotary interfaces for fluid flow through porous impellers for filtration and/or sparging for fluid assemblies (e.g., bioreactor applications), and related methods of fabrication and use. Disclosed herein is a fluid assembly (e.g., bioreactor) that includes a porous impeller which is in fluid communication with a hollow shaft that can be used to transport a reaction fluid to an external storage tank or the like. The fluid assembly/bioreactor can include a coupling mechanism that transmits rotary motion from a motor to a primary shaft and then to a hollow secondary shaft, while at the same time permitting removal of a filtrate from the fluid assembly or bioreactor via the hollow secondary shaft and a porous impeller.

Water or wastewater filtration systems and processes have a filter tank having a floor and sidewall defining a filtration zone, an influent conduit, and an effluent conduit. One or more filtration members in the tank having filter media, and one or more cleaning members adjacent at least some portions of the filter media. Generating an effluent stream by generating a pressure differential across submerged portions of the filtration media, causing water in the influent to flow from outside to inside the submerged portions of the filter media. A prime mover rotates the filtration members. A blower and chamber for creating a reduced pressure condition in each of the cleaning members when they are non-submerged, the chamber receiving wet solids removed from non-submerged, wet solids-laden portions of the filter media by the non-submerged cleaning members subsequent to submerged, fouled portions of the filter media being rotated out of the filtration zone.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

A food processing water filtration apparatus includes a rotatable drum, a source of liquid, a blade to remove solids from the drum, a drain, and a rotational drive. The system has one or more of a plurality of flights affixed to the drum, a source of mixing gas connected to the source of liquid, a source of cleaning gas connected to nozzles disposed inside the drum, and a trunnion support for an end of the drum. The drum is cylindrical and at least partially comprised of a screen. The source of liquid directs liquid towards the screen and into the drum. The drain collects at least a second portion of the liquid that passes through the screen and out of the drum. The outlet is at one or both ends of the drum. The rotational drive is connected to an end(s) of the drum, and rotates the drum.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

A brine injection system with a plurality of needles, which are inserted into a product and through which brine is injected into the product. Brine which does not end up in the product is collected and recycled, and during recycling, the brine flows through a filter. The filter includes a filter element, along which unfiltered brine flows in a flow-direction and through which filtered brine passes and which holds back residues in the unfiltered brine. The filter element includes a multitude of slots, each with a main extension direction which extends parallel to the flow direction of the brine.