A separator, for separating solids from a liquid, comprises a hydrodynamic separator, a first filtration device, a first backwash device, a second filtration device, and a second backwash device. The first filtration device comprises a first inlet at a first level for receiving at least a first portion of the liquid from the hydrodynamic separator, and a first filter for filtering the first portion of the liquid received via the first inlet. During filtration of the first portion of the liquid, the first portion of the liquid passes through the first filter away from the first inlet and a first portion of solids is retained by the first filter. The first filter is located between the first inlet and the first backwash device. The first backwash device is configured to alternately prevent and allow the passage of the first portion of the liquid through the first backwash device such that, when the passage of the first portion of the liquid through the first backwash device is prevented, the first portion of the liquid that has passed through the first filter passes back through the first filter toward the first inlet so as to remove the first portion of solids from the first filter. The second filtration device comprises a second inlet at a second level higher than the first level for receiving a second portion of the liquid from the hydrodynamic separator, and a second filter for filtering the second portion of the liquid received via the second inlet. During filtration of the second portion of the liquid, the second portion of the liquid passes through the second filter away from the second inlet, and a second portion of solids is retained by the second filter. The second filter is located between the second inlet and the second backwash device. The second backwash device is configured to alternately prevent and allow the passage of the second portion of the liquid through the second backwash device such that, when the passage of the second portion of the liquid through the second backwash device is prevented, the second portion of the liquid that has passed through the second filter passes back through the second filter toward the second inlet so as to remove the second portion of solids from the second filter.

A sand separator for capturing solid debris from oil and gas wells includes a spherical, high-pressure vessel adapted to couple downstream of a wellhead. Fluid entering the separator follows a helical path around a vertical separator axis, slowing and separating into water, gas, oil and solid debris, the latter sinking to the bottom. A conical, downwardly opening flue descends from an exit port at the top and terminates in a horizontal, coaxial perimeter. A scalloped, annular collar inside the flue perimeter creates a low barrier to fluid flow into the flue. As fluid constituents circulate toward the flue, they recombine free of sand and rock debris, pass under the flue perimeter and across the collar, slowing further and becoming substantially laminar A fluid dome rises inside the flue with a gas layer above other fluid constituents, permitting the gas to exit the separator through the exit port.

A floating liquid intake for a liquid suction removal system, the liquid intake comprising housing defining an internal cavity. The housing has a hollow and buoyant annular body, an upper cover and a lower cover. The internal cavity is formed between the upper and lower covers. A substantially annular inlet is formed in the annular body for ingress of liquid into the cavity. The annular body has a buoyancy sufficient for the liquid intake to float in a liquid with the annular inlet submerged below the surface of the liquid in which the liquid intake is floating. A pipe extends into the cavity and the pipe includes an inlet that in use is open below the surface of the liquid within the cavity. The pipe extends outside of the cavity for connection to a liquid suction removal system.

A separation device configured to separate light and heavy components of an effluent mixture. The separation device includes a separation tank, an inlet discharge, an outlet diffuser, and a baffle. The separation tank includes a tank reservoir for containing the effluent mixture during separation, with light components configured to migrate upwardly toward a static water line and heavy components configured to sink adjacent the bottom. The inlet discharge is located within the tank reservoir to supply effluent mixture to the separation tank. The outlet diffuser is spaced from the inlet discharge and located within the tank reservoir to receive a heavy component of the effluent mixture after separation. The baffle is located within the tank reservoir to separate the inlet discharge from the outlet diffuser. The baffle presents a baffle opening adjacent the static water line.

An automated process and accompanying apparatus simultaneously separates and measures the flow rate of any multiphase mixture of immiscible fluids. Such separation and measurement can occur in a single vessel, or multiple vessels. Liquid levels, together with a material balance analysis, are utilized to determine constituent liquid flow rates. The vessel(s) can be remotely operated and monitored in real time, while also allowing for automated or manual calibration.

Provided is a sand setting circulating device for wave-current tank test tailings. A sand collection device is arranged at a front end of a tail gate of a tank body for performing primary collection on a bed-load sand body with a large particle size; a sand-water separating device is arranged at a tail end of the tank body for performing sand-water separation on tail water subjected to energy dissipation so as to perform secondary collection on a suspended load sand body with a small particle size, the sand-water separating device comprising a collection barrel and a sand suction device mounted in the collection barrel; a water outlet is formed in an upper part of the collection barrel, and separated clear water flows into a clear water reservoir through a water return pipe for cyclic utilization; and a computer is arranged for intelligent control.

A separator unit includes a tank defining an internal volume and having an inlet and an outlet. An insert separates the tank into an upper chamber and a lower chamber. The insert includes a weir at an upper side to define an intake area for receiving an influent liquid, a first opening in the intake area for delivering liquid down into the lower chamber and a second opening on an opposite side of the weir for delivering liquid from the lower chamber back up into the upper chamber. The separator may include one or more of the first opening being of arcuate shape, a perforated shroud extending downward from the insert within the lower chamber and/or an upflow pipe extending downward from the second opening into the lower chamber, a bottom of the upflow pipe covered, and a slot opening in a sidewall of the upflow pipe.

The invention relates first of all to a method for removal of clarified liquid from a liquid basin (N), such as a clarification basin or like, with an apparatus, by means of which clarified liquid is being removed by using a liquid exhaust arrangement (2) and a collecting arrangement coupled therewith. The liquid exhaust arrangement comprises one or more exhaust passages (2a1), existing beneath surface (y) of the liquid basin one after another in longitudinal direction (s) of the liquid basin and comprising a profile with an essentially closed cross section, such as a pipe, channel or like, each passage having a perforation (R) to make possible flow of liquid inside the same. Functioning of the liquid exhaust arrangement is being controlled according to the circumstances, such as due to surface alteration in the liquid basin, by adjusting the amount of liquid to be removed by the exhaust passage (2a1) by changing a flow cross section area beneath the surface (y) of the liquid basin of an open overflow edge (2a2y) of exhaust organs (2a2), being coupled with the perforation (R) in the exhaust passage and having a cross section expanding towards outer end thereof, which is carried out by turning (w) the exhaust organs (2a2) with respect to longitudinal axis (p1) of the exhaust passage (2a1). The invention also relates to an apparatus operating according to the method.

A method, system, and apparatus directed to an innovative approach for the treatment of stormwater utilizing hydrodynamic separator assembly designed to maximize flow movement for more efficient sediment removal and maximize clearance space within assembly to facilitate cleaning and increase storage capacity of trash, debris, and sediment.

A dewatering system for separating a slurry into solid material and effluent water. The dewatering system comprises a plurality of support frames arranged to enclose an interior space of the dewatering system, with the interior space being configured to receive the slurry. The dewatering system further includes geo-fabric material positioned on a portion of the support frames, with the geo-fabric material being configured to filter the slurry received within the interior space, such that effluent water permeates through the geo-fabric material and is discharged from the interior space. The dewatering system further comprises a dump door assembly associated with at least one of the support frames, with the dump door assembly including a plurality of hatches configured to selectively open to allow effluent water to be discharged from the interior space of the dewatering system.