A feedwell comprising a plurality of holes disposed in a bottom thereof, at least some of the holes having a tube disposed thereabout which extends downward or otherwise away from an interior of the feedwell. Optionally, a large center hole can be provided and it can have a tube disposed around it. By providing a plurality of holes spread across a large portion of the bottom of the feedwell, lower velocity flow rates from the feedwell to a sedimentation chamber can be provided, thus reducing induced turbulence in the fluid within the sedimentation chamber, while still providing sufficient separation of the feedwell from the sedimentation chamber so that the contents of the feedwell can be properly and adequately mixed.

A gas separator, gas separation system, and method for separating gas from drilling cuttings by actively maintaining a liquid seal of liquid in a lower portion of a separation vessel by controlling an introduced amount of the liquid admitted to the separation vessel as a removed amount of the liquid is removed from the separation vessel and by promoting agitation of the drilling cuttings in the liquid in an agitation chamber within the lower portion of the separation vessel to aid removal of the drilling cuttings along with the removed amount of the liquid.

A method and system for separating oil well substances by using a separator system comprising inclined tubular oil and water separators for separating the respective fluid components mixed in fluids from oil wells, combined with providing a liquid lock upstream the inclined tubular oil and water separators, as well as establishing and maintaining water-wetted entrance to the inclined tubular oil and water separators.

A cyclonic inlet diverter for initiating the separation of a multi-phase inlet fluid flow comprises an enclosed tubular body mounted crosswise within a larger separator vessel. The inlet diverter includes a splitter plate positioned within a center portion of the tubular body and configured to split the inlet flow into a first stream and a second stream, and a swirl plate positioned on each side of the splitter plate with angled surfaces configured to increase the cyclonic motion of the first and second streams within the tubular body. The inlet diverter further includes elongate apertures formed through bottom sidewall portions of the tubular body on each side of the splitter plate, an axial aperture formed through opposing end caps of the tubular body, and at least one radial aperture formed through lateral sidewall portions of the tubular body proximate each opposing end cap.

Settling devices for separating particles from a bulk fluid with applications in numerous fields. The particle settling devices include a stack of cones with a small opening oriented upwardly or downwardly. The cones have an interior surface that is convex. These devices are useful for separating small (millimeter or micron sized) particles from a bulk fluid with applications in numerous fields, such as biological (microbial, mammalian, plant, insect or algal) cell cultures, solid catalyst particle separation from a liquid or gas and waste-water treatment.

A wastewater treatment device including: a vessel having an inlet for receiving an influent stream; and a separator disposed within the vessel. The wastewater treatment device further including: a grit pot connected to the separator; a level sensor configured to output a signal indicative of the level of grit within the grit pot; one or more fluidizing nozzles disposed within the grit pot and configured to deliver a jet of fluid from a fluid supply to fluidize grit accumulated on the lower surface of the grit pot; an extraction outlet connected to a pump for extracting grit fluidized by the fluidizing nozzles; and a controller in communication with the level sensor, wherein the controller and the pump are configured to activate the fluidizing nozzles based on the signal received from the level sensor. There is also described a wastewater treatment device including: a vessel having an inlet for receiving an influent stream; and a separator disposed within the vessel. The wastewater treatment device further including a grit pot connected to the separator, a level sensor configured to sense the level of grit within the grit pot, and a support extending into the grit pot from outside of the grit pot. The level sensor may be movably connected to the support and is movable along the support between an operating position in which the level sensor is positioned within the grit pot and a maintenance position in which the level sensor is positioned outside of the grit pot so as to be accessible by a user.

Disclosed is a multi-stage sedimentation rake-free thickening device. The device includes a central tank. A diversion sedimentation zone is arranged on the outside of the center tank. The diversion sedimentation zone includes an annular diversion sedimentation screen and a concentrated magnetic shower. The annular diversion sedimentation screen includes an annular groove spirally arranged around a central groove body. The annular groove is sequentially arranged with second spoiler baffles along the length direction. The lower bottom plate of the annular groove is also provided with second underflow discharge port. Multiple second inclined plate diversion discharge pipe is arranged under the corresponding second underflow discharge ports. The outlets of all the second inclined plate guide discharge pipes are collected to the second underflow discharge pipe, and the settled water is discharged from the second overflow discharge pipe arranged at the end of the annular groove.

Apparatuses and methods for cleaning accumulated sediment from storm drain conduits and other large-diameter conduits are disclosed. A nozzle assembly is arranged to deliver a high-volume flow of water at a pressure high enough to loosen sediment from the interior of a conduit and to propel the nozzle assembly and an associated nozzle feed hose upstream within a conduit being cleaned. Water from the nozzle assembly flushes the sediment downstream and is then collected, partially cleaned, and reused in the nozzle assembly. Mud and clay may be left in the water to increase its specific gravity and viscosity. A self-contained portable and mobile system includes a tank and apparatus for removal of high concentrations of entrained or suspended solids, and a pump and conduits for delivering a high-volume flow of water, containing quantities of suspended solids, to the nozzle assembly.

A tank assembly for the treatment of waste streams that include settling pollutants and floating pollutants. The tank assembly includes an inlet conduit, a first compartment that includes a first drain at a bottom thereof, a second compartment that includes a second drain at a bottom thereof, a third compartment that includes a third drain at a bottom thereof, and an outlet conduit. The second compartment also includes at least a first lamella filter package disposed therein. The third compartment also includes a skimmer, an underrun member and an overrun member. A liquid flow path is defined from the inlet conduit, through the first compartment, through the second compartment and the first lamella filter pack, through the third compartment, past the skimmer, under the underrun, over the overrun and out the outlet conduit.

A collection and concentration system including a separation tank having a plurality of distribution arms configured to separate and recover oil, water, and sediment or sand from an inflowing mixture of the same. The distribution arms are connected to and in fluid communication with a downcomer section of a center column that is vertically arranged in the separation tank. The distribution arms extend radially toward a sidewall of the tank and include tangential discharge nozzles that are tangentially directed toward the sidewall. Inflowing mixture directed tangentially against the sidewall is directed in a downward, helical manner that assists in the separation and recovery of oil, water, and sediment from the inflowing mixture.