A system and method for removing suspended solids from waste water includes flowing a volume of waste water through a series of flow chambers arranged between an inlet and an outlet. Each of the flow chambers includes a flow path that is substantially transverse (orthogonal) to a predominant flow path between the inlet and the outlet. The flow chambers are arranged substantially parallel to each other in a switchback (antiparallel) configuration. Stops (e.g., oil or debris stops) are disposed in one or more flow chambers. The stops are configured to substantially impede (or otherwise reduce) introduction of floating material to a flow chamber immediately downstream of each stop. Weirs are disposed in one or more of the flow chambers. The weirs are configured to substantially impede (or otherwise reduce) introduction of settled solids to a flow chamber immediately downstream of each weir.

The present invention relates to a method for separating and washing microparticles via a stratified co-flow of non-Newtonian fluid and Newtonian fluid, wherein the Newtonian fluid as well as the non-Newtonian fluid may flow into a transfer channel formed in a fluid chip at a predetermined flow rate ratio matching with an effective diameter of the target particles contained in the non-Newtonian fluid, thereby inducing a change in positions of particle focusing points with respect to the target particles within the stratified co-flow thereof formed in the transfer channel. As a result, it is possible to more easily separate only the target particles among the microparticles contained in the non-Newtonian fluid toward the Newtonian fluid without using an additional device and human power, or transfer the target particles contained in the non-Newtonian fluid toward the Newtonian fluid for washing the same. Accordingly, since native biofluids used in the studies and clinical experiments are mostly non-Newtonian fluid, it is possible to directly separate and wash the target particles without a need of changing a solution for containing cells/particles or additional diluting the same for executing experiments. If the native biofluids as the non-Newtonian fluid lack a relaxation time, any artificial polymer could be simply added thereto in order to increase the relaxation time, thereby greatly increasing an amount of treatment per time. Further, since high working efficiency can be achieved in a wide range of flow rate, high efficient separation and washing processes may be achieved by a simple hand work of pushing and pumping an injector alone, without any accurate pumping device.

The subject disclosure is directed to a liquid purification assembly featuring an inclined cell separator located within a chamber. The separator features a plurality of plates oriented perpendicular between opposing spaced-apart substantially vertical weirs. The plurality of plates are substantially parallel to one another and extend longitudinally within the chamber. The first and second weirs can have a plurality of orifices extending therethrough between their front and rear surfaces. The chamber features an influent chamber, an effluent chamber and a sediment collection area along the bottom of the chamber below the cell separator. A net extending from the top edge of the first weir and over a portion of the cell separator is further provided. The assembly features a hinged baffle suspended below the bottom edge of the second weir.

A dredging tube system includes a tube unit and a plurality of spaced-apart sediment-trapping units. The tube unit includes a tube structure that has an inner surrounding surface surrounding a longitudinal axis. The sediment-trapping units are mounted fixedly on the inner surrounding surface and are arranged along the longitudinal axis. Each of the sediment-trapping units includes a plurality of sediment-trapping members that cooperatively form an annular ring structure. Each of the sediment-trapping members has an abutment portion that has a curved outer surface entirely abutting against the inner surrounding surface of the tube structure, and a projecting portion that extends radially and inwardly from the abutment portion.

Described are devices, methods, and kits for controlled incremental filtration (CIF), as well as methods of designing CIF devices. For example, a method for CIF may modulate a concentration of particles of a desired size in a fluid. The fluid including the particles may be flowed along a flow path through a central channel to contact a plurality of gaps that fluidically couple the central channel to at least one adjacent side channel network. Flow resistance may be decreased along at least a portion of the flow path effective to modulate the concentration of particles. The method may include selecting the plurality of gaps to be larger than the particles. The method may include causing a consistent flow fraction f.sub.gap in the central channel to traverse each gap in the plurality of gaps and flow through the at least one side channel network along the flow path.

The present invention relates to a method for separating and washing microparticles via a stratified co-flow of non-Newtonian fluid and Newtonian fluid, wherein the Newtonian fluid as well as the non-Newtonian fluid may flow into a transfer channel formed in a fluid chip at a predetermined flow rate ratio matching with an effective diameter of the target particles contained in the non-Newtonian fluid, thereby inducing a change in positions of particle focusing points with respect to the target particles within the stratified co-flow thereof formed in the transfer channel. As a result, it is possible to more easily separate only the target particles among the microparticles contained in the non-Newtonian fluid toward the Newtonian fluid without using an additional device and human power, or transfer the target particles contained in the non-Newtonian fluid toward the Newtonian fluid for washing the same. Accordingly, since native biofluids used in the studies and clinical experiments are mostly non-Newtonian fluid, it is possible to directly separate and wash the target particles without a need of changing a solution for containing cells/particles or additional diluting the same for executing experiments. If the native biofluids as the non-Newtonian fluid lack a relaxation time, any artificial polymer could be simply added thereto in order to increase the relaxation time, thereby greatly increasing an amount of treatment per time. Further, since high working efficiency can be achieved in a wide range of flow rate, high efficient separation and washing processes may be achieved by a simple hand work of pushing and pumping an injector alone, without any accurate pumping device.

The disclosed method and apparatus separates solid impurities from a fluid containing solid impurities. The method and apparatus allow the introduction of influent comprising a fluid containing solid impurities into a plurality of channels and allowing at least a portion of the solid impurities initially present in the influent to settle on upward-facing surfaces of a plurality of plates forming the channels or slide down the upward-facing surfaces, while permitting fluid, which has been depleted of at least a portion of solid impurities, to flow upward toward the top edges of the plurality of plates. The influent is introduced into the plurality of channels in a manner that inhibits a disrupting or disturbing of the solid impurities, which have separated from the influent.

Described are devices, methods, and kits for controlled incremental filtration (CIF), as well as methods of designing CIF devices. For example, a method for CIF may modulate a concentration of particles of a desired size in a fluid. The fluid including the particles may be flowed along a flow path through a central channel to contact a plurality of gaps that fluidically couple the central channel to at least one adjacent side channel network. Flow resistance may be decreased along at least a portion of the flow path effective to modulate the concentration of particles. The method may include selecting the plurality of gaps to be larger than the particles. The method may include causing a consistent flow fraction f.sub.gap in the central channel to traverse each gap in the plurality of gaps and flow through the at least one side channel network along the flow path.

This device serves to improve water quality under gravity flow conditions. The water quality treatment device traps floating debris with replaceable netting, it contains oil spills and settles sediment in self-cleaning settling cells above a collection bunker inside a chamber. The device directs the water below the inclined cells, through the inclined cells, or over the inclined cells, depending on the inflow intensity. All inflowing water enters the net cavity and the net is supported by the inclined cell assembly. The pollutant collection surfaces are overlapping each other and aligned with the water flow direction. A hinged baffle with orifices controls the flow rate through the inclined cells. The netting is replaceable when filled with debris through an access opening in the ceiling of the chamber. The sediment bunker is cleaned through access openings in the ceiling from the chamber inflow side and the exit side.

The subject disclosure is directed to a liquid purification assembly featuring an inclined cell separator located within a chamber. The separator features a plurality of plates oriented perpendicular between opposing spaced-apart substantially vertical weirs. The plurality of plates are substantially parallel to one another and extend longitudinally within the chamber. The first and second weirs can have a plurality of orifices extending therethrough between their front and rear surfaces. The chamber features an influent chamber, an effluent chamber and a sediment collection area along the bottom of the chamber below the cell separator. A net extending from the top edge of the first weir and over a portion of the cell separator is further provided. The assembly features a hinged baffle suspended below the bottom edge of the second weir.