According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.

Fluid synthesis system and corresponding method for synthesis of slurry containing abrasive particles. The system and method are configured to substantially segregate the abrasive particles passing through the filter, used at the filtering step of the process, from the sticky components that clog such filter prior to the filtering step of the synthesis process to achieve a sustaining filtration of the slurry as a result of which the filter remains substantially unclogged for the whole predetermined duration of the filtering process.

The present invention is a CO.sub.2 based hydrometallurgical multistage reaction and separation system comprising: a pre-washing device configured to fully mix the feedstock, such as industrial solid waste, mineral and mine tailings with auxiliary reagents and water at specific ratio, a reactor configured to treat the washed slurry with CO.sub.2 bubbling and discharge the treated slurry to the next stage, multistage separators configured to separate solid particles from treated slurry and recycle the unreacted solids back into the pre-washing device, a by-product preparation device configured to generate calcium and magnesium based products from filtrate containing target elements, a water recirculating device configured to recycle the remaining liquor back to the system. The present invention ensures the whole system is able to continuously and consistently react at maximum capacity through continuous slurry feeding and CO.sub.2 bubbling into the reactors which also enables multistage circulating reaction.

The invention includes an automatic effluent filter cleaning system that prevents sewage backups. The system includes an outlet baffle with filter, spray assembly, inlet and outlet flappers, pump, and strainers. The spray assembly actuates the baffles to control effluent flow prior, during, and after the cleaning process. During a high-water level condition, the pump engages and pumps effluent water from the septic tank to close the inlet flapper to prevent additional effluent water from entering the outlet baffle. Similarly, effluent water is pumped to close the outlet flapper to prevent effluent water from leaving the baffle. Spray outlets spray effluent water to remove debris from the filter. An outer chamber receives and channels the debris to strainers, which retain the removed debris while allowing the effluent water to return to the septic tank. Once the water level recedes to a safe level, the flappers are opened, and operation resumes.

The invention includes an automatic effluent filter cleaning system that prevents sewage backups. The system includes an outlet baffle with filter, spray assembly, inlet and outlet flappers, pump, and strainers. The spray assembly actuates the baffles to control effluent flow prior, during, and after the cleaning process. During a high-water level condition, the pump engages and pumps effluent water from the septic tank to close the inlet flapper to prevent additional effluent water from entering the outlet baffle. Similarly, effluent water is pumped to close the outlet flapper to prevent effluent water from leaving the baffle. Spray outlets spray effluent water to remove debris from the filter. An outer chamber receives and channels the debris to strainers, which retain the removed debris while allowing the effluent water to return to the septic tank. Once the water level recedes to a safe level, the flappers are opened, and operation resumes.

This invention belongs to the field of preparation of macromolecule sample of various volumes, pertaining to a detergent-mixed dry hydrogel particle and a method of using the particle to mass concentrate the macromolecule liquid sample or to enhance specific activity of the protein liquid sample. After thorough suspension and hydration in a detergent solution, the hydrogel particle is separated from the excess of the detergent solution and dried into the detergent-mixed dry hydrogel particle; upon contacting the macromolecule liquid sample in certain ratio with the dry particle having a pore size of its cross-linked network smaller than the macromolecule to allow absorption and swelling of the hydrogel particle, filter centrifugation or filter conical rotating drum centrifugation is exercised to remove the hydrogel particle whose surface is deprived of water and to collect the concentrate filtrate of the macromolecule mass or the protein sample with enhanced specific activity.

There are provided a sludge treatment device 100 and a sludge treatment system 400 comprising: a primary tank 110 into which a liquid flows from a machine tool 300 side; a secondary tank 120 from which a liquid inside flows out to the machine tool 300 side; a first flow path 130 that supplies the liquid in the primary tank 110 to the secondary tank 120; a filter 134 disposed on the first flow path 130; a second flow path 140 different from the first flow path 130 connecting the primary tank 110 and the secondary tank 120; and a liquid inflow amount adjustment means 142 configured to adjust an inflow amount of liquid flowing from the secondary tank 120 into the primary tank 110 through the second flow path 140, wherein a second flow path liquid supply path 150 is provided to cause the liquid in the primary tank 110 to flow from the secondary tank 120 side toward the primary tank 110 side from a middle of the second flow path 140.

A blood processing apparatus including a blood supply unit, a centrifuge, a light irradiation unit, a filtering device, and a blood collection unit, which is characterized in that blood is introduced into the centrifuge and centrifuged, the centrifuged blood is passed through a transparent tube provided in the light irradiation unit while being irradiated with light applied, from the outside of the transparent tube, by a light irradiation device configured to include an infrared lamp with a wavelength of 830±5 nm, a red light-emitting diode (LED) lamp with a wavelength of 635±6 nm, a blue LED lamp with a wavelength of 420±5 nm, a green LED lamp with a wavelength of 530±5 nm, a yellow LED lamp with a wavelength of 585±5 nm, and ultraviolet (UV) lamps, and the blood irradiated with the light is filtered using the filtering device and collected in the blood collection unit.

A system for separating solids from a fluid includes a containment vessel having a V-shaped tank in fluid communication with an agitated overflow tank. Baffles within the V-shaped tank provide a series of zones where the fluid is deposited for processing. A shaftless auger at the bottom of the V-shaped tank transfers solids to an area where they are pumped to a first hydrocyclone assembly associated with a first shaker. Overflow from the hydrocyclone assembly and underflow from the first shaker is further processed by a second hydrocyclone assembly associated with a second shaker. Overflow from the second hydrocyclone assembly and underflow from the second shaker are deposited into overflow tank which contains the cleaned fluid.

A water treatment device can include a main body in the form of a main chamber and having an upper portion, a lower portion, a main inlet for receiving a flow of water into the main body and a main outlet for discharging a flow of water from the main body. In some embodiments an insert member disposed within the main chamber at the upper portion includes a return and bypass channel providing fluid communication between the main inlet and the main outlet. In some embodiments a filter assembly disposed within the main chamber and below the insert member includes a treatment chamber in fluid communication with the main inlet and is adapted for filtering water that flows through the filter assembly.