A sludge collector arrangement has a settling tank having side walls sloping downwardly and inwardly towards the base of the tank to from a V-base. A sludge collection unit located in the bottom of the tank has one funnel part facing in one direction and another funnel part facing in the other direction so that when the unit is driven backwards and forwards in the V-base, sludge is driven into one or other of the funnel parts. The funnel parts communicate with a central chamber and a port in a wall of the chamber allows sludge to be drawn by a suction pump from the chamber for subsequent disposal.

A sludge collector arrangement has a settling tank having side walls sloping downwardly and inwardly towards the base of the tank to from a V-base. A sludge collection unit located in the bottom of the tank has one funnel part facing in one direction and another funnel part facing in the other direction so that when the unit is driven backwards and forwards in the V-base, sludge is driven into one or other of the funnel parts. The funnel parts communicate with a central chamber and a port in a wall of the chamber allows sludge to be drawn by a suction pump from the chamber for subsequent disposal.

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.

There is provided a filtration system comprising a reaction and separation apparatus (2) for processing a solid-liquid mixture (4) to separate solids from liquid, the reaction and separation apparatus (2) comprising: a tank (6) comprising an inlet (8) and an outlet (10), the inlet (8) configured for receiving the solid-liquid mixture (4) into the tank (6), the outlet (10) configured for permitting liquid to exit the tank (6); and a sedimentation device (16) including a liquid conduit (18), the liquid conduit (18) having a first end (20) and a second end (22), the first end (20) configured to be in liquid communication with the outlet (10), the second end (22) configured for dispensing liquid from the liquid conduit (18), wherein the second end (22) is positioned higher than the first end (20) so that the liquid conduit (18) extends from the first end (20) to the second end (22) along a vertical axis or along an inclined axis relative to the horizontal, wherein the filtration system further comprises a preparatory filter (642) configured to, in use, receive an inflow liquid (644) from an external source and separate the inflow liquid (644) into the solid-liquid mixture (4) and a filtered liquid (646), wherein the preparatory filter (642) is configured to dispense the solid-liquid mixture (4) into the tank (6) via the inlet (8).

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.

The invention relates to a water treatment device comprising a mixing tank comprising an inlet path (12) for an effluent to be treated, an optional inlet path (13) for reagents, a stirring source (14) for generating a turbulent stir in a given volume of said tank, an extraction path (15) for discharging sludge, and an extraction path (16) for treated effluent, and further comprising above and adjacent to the given volume, but below the treated-effluent outlet path, a settling structure (17) comprising a plurality of ducts extending from the bottom to the top and arranged in the form of a baffle so that no particle can flow through said layer along a rectilinear path.

The present invention provides Biological Double efficiency Product (BDP) sewage denitrogenation treatment systems and methods.

There is provided a material treatment apparatus. The material treatment apparatus includes a first compartment. The first compartment includes an inlet for receiving supply of slurry material, and a first material conduction space for conducting flow of the supplied slurry material in a downwardly direction. A second compartment is also provided including a second material conduction space for receiving a first intermediate material of the supplied slurry material and conducting the first intermediate material in an upwardly direction. A baffle is provided for interfering with conducting of the supplied slurry material from the first material conduction space to the second material conduction space. A turbulent flow mitigation device is disposed within the first compartment and configured to, upon interaction with the supplied slurry material, to effect adjustment to the flow characteristics of the supplied slurry material to generate a downwardly flowing flow characteristic-adjusted slurry material, wherein the flow characteristics of the supplied slurry material are transformed from turbulent flow to laminar flow. The turbulent flow mitigation device is disposed, relative to the baffle, such that the baffle directs the downwardly flowing flow characteristic-adjusted slurry material to a space below the first baffle. The first material conducting space is fluidly coupled, below the baffle, to the second material conduction space, such that the first intermediate material fraction of the downwardly flowing flow characteristic-adjusted slurry material is conducted to the second material conduction space from below the baffle. A collection region is disposed below the first and second compartments for collecting a separated solids-comprising fraction that has separated, by gravity settling, from the supplied slurry material.

A high-rate sedimentation tank includes a hopper configured to be supplied with raw water including floc, at least one circular orifice pipe disposed at a lower portion of the hopper and configured to have the floc deposited therein as a sludge while passing the floc included in the raw water therethrough, and a sludge outlet configured to discharge the sludge deposited by passing through the circular orifice pipe to an outside of the hopper.

A stormwater treatment device may include a chamber having a floor and a wall; an inlet formed in the wall that receives stormwater into an inlet side of the chamber; an outlet formed in the wall that discharges stormwater from an outlet side of the chamber; an enhanced settling device positioned in the outlet side of the chamber; a flow diverter plate in a lower portion of the chamber; and an outlet control diverter positioned proximate to the outlet. Stormwater is received by the inlet in a first flow direction, flows from the inlet side to the lower portion of the chamber in a second flow direction, flows through the enhanced settling device to an upper portion of the chamber in a third flow direction, flows through the outlet control diverter in fourth flow direction, and is discharged by the outlet in a fifth flow direction.