A rotary disc filter having a backwash system that includes a series of feed pipes that project into and between successive filter discs that are mounted on a rotatable drum. Connected to an outer terminal end portion of the feed pipes is a series of nozzle holders. Each nozzle holder includes a main conduit, a series of branch conduits that project outwardly from the main conduit, and a connector for connecting the nozzle holder to a respective feed pipe. A series of detachable nozzles are secured to the outer terminal ends of the branch conduits.

Water filter with self-rinsing capability that includes filter housing, hollow cartridge core, and mesh filter. The filter housing includes a hollow housing with top and drain openings, a top cover with inlet and outlet ports, a one-way pressure valve, and a drain tap that includes a rod, an opening and closing knob that is connected to the rod, and an opening and closing barrier with passageway that is connected to the rod. The cartridge comprises of a tube with inlet and outlet passageways, and spray pipes with spray nozzles, and enables water to flows from the tube into the spray pipes and outside into the filter housing through the nozzles. The mesh filter has a shape of a hollow cylinder that is worn on the tube in a gap between the tube and the spray pipes.

A separator prevents microplastics from entering the environment by regenerating the pressure consumption of filters for removing microplastics in effluent from any source but in particular removing microfibers from domestic and commercial washing machine wastewater, industrial textile processing waste and roadside runoff. The separator separates microplastics from an effluent, and includes a chamber with an inlet and an outlet, a sieve structure forming a permeable barrier between the inlet and the outlet to filter the effluent, and a pump in fluid communication with the outlet of the chamber.

A separator prevents microplastics from entering the environment through regenerating the pressure consumption of filters for removing microplastics in effluent from any source but in particular removing microfibers from domestic and commercial washing machine wastewater, industrial textile processing waste and roadside runoff. A separator includes a chamber with an inlet and an outlet, a sieve structure forming a permeable barrier between the inlet and the outlet to filter the effluent, and a pump in fluid communication with the outlet of the chamber.

A separator prevents microplastics from entering the environment by regenerating the pressure consumption of filters for removing microplastics in effluent from any source but in particular removing microfibers from washing machine wastewater. The separator includes a chamber with an inlet and an outlet, a sieve structure forming a permeable barrier between the inlet and the outlet to filter the effluent, the sieve structure thus having an inlet side for unfiltered effluent and an outlet side for filtered effluent, the separator further including at least one pump in fluid communication with the outlet of the chamber, and at least one sensor is provided, and wherein the pump is arranged to be activated in accordance with the output from the sensor.

A capture unit for use with an antimicrobial application unit may include an upstream filter and a downstream filter. The upstream filter may be positioned to receive effluent from the application unit and to filter solid components from the effluent. The resultant upstream effluent filtrate may then be passed downstream to the downstream filter. The downstream filter may be used to filter an antimicrobial component from the upstream effluent filtrate and the resultant downstream effluent filtrate may be suitable for disposal as wastewater discharge. The antimicrobial is preferably a quaternary ammonium compound, is more preferably an alkylpyridinium chloride, and is most preferably cetylpyridinium chloride.

A cutting fluid circulation device includes a first tank reservoir, a primary filter, and a first pump. The tank reservoir stores cutting fluid discharged from a machine tool. The primary filter is provided in the first tank reservoir and filters the cutting fluid. The first pump pumps up the cutting fluid filtered by the primary filter in the first tank reservoir. The first tank reservoir is partitioned into a filtration tank in which the primary filter is disposed, a pumping-up tank in which the first pump is disposed, and a connecting channel in which the cutting fluid in the filtration tank is allowed to flow into the pumping-up tank. The connecting channel has an identical channel width along an entire length thereof, or at least a portion of the channel width is narrowed stepwise or continuously from the filtration tank to the pumping-up tank.

A washing pipe is mounted on a washing guide provided on an outer side of an outer cylinder screen of the screw press and includes a washing pipe body and washing nozzles provided in the washing pipe body and configured to discharge washing liquid flowing from an inside of the washing pipe body toward the outer cylinder screen. A washing pipe swing supporter is configured to support the washing guide to allow the washing pipe to swing between a discharge position and a separation position. The discharge position is a position where the washing pipe is mounted on the washing guide and the washing liquid is discharged from the washing nozzles toward the outer cylinder screen. The separation position is a position where the washing nozzles are farther away from the outer cylinder screen than in a state where the washing pipe is positioned at the discharge position.

A rotary disc filter is provided with an integrated backwash and chemical cleaning system. In one mode of operation, backwash is directed through a control valve to one or more nozzles for spraying the backwash onto the filter media forming a part of a rotary disc filter. In a second mode, a chemical cleaning mode, the pump directs backwash through an eductor that induces a chemical into the inductor which is mixed with the backwash to form a backwash-chemical mixture that is sprayed onto the filter media. A control system is used in conjunction with the backwash and cleaning systems to monitor process information and/or filter media properties and to determine when to perform backwashes and regenerative cleanings in order to optimize the performance of the filter system.

A screen intake apparatus for a water intake system uses a cleaning system to clean one or more screen intakes. To clean debris from a screen, pipes in the interior of the screen receive pumped liquid (e.g., water or incompressible liquid) from a pump. Outlets, such as apertures or nozzles, on the pipes then direct the pumped liquid into the interior of the screen. One or more valves can vary, agitate, or pulse the flow of pumped fluid and/or can selectively deliver the pumped liquid to the pipes to remove collected debris from the exterior of the screen. A heater of the system can also heat the pumped liquid for delivery to the pipes to remove or prevent ice formation on the screen.