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.

A separation tank for the separation of a mixture of oil, gas, water, and solids obtained from an oil field includes distinct regions vertically located within the tank interior where constituent components of the mixture can collect. The inflowing mixture may be directed to a vertical column extending inside the separation tank and can be introduced to the tank interior through a swirl vane diffuser configured to impart a helical direction to the inflowing mixture that assist separation of the mixture component. To further facilitate separation of oil from the mixture, the separation tank may be operatively associated with an aeration system configured to generate and introduce an aerated liquid to the tank interior. Gas dissolved in the aerated liquid may form microbubbles that can naturally adhere to the oil and solids separate it from the mixture which can improve the quality of the water.

A multipurpose wheel-washing apparatus includes a wheel-washing unit including an upper frame provided with a plurality of rollers on which wheels of a vehicle are to be rotatably seated, and injection nozzles configured to inject high-pressure washing water onto the wheels seated on the rollers; and a lower frame provided with a water tank located below the upper frame so as to collect falling waste/turbid water; a water storage unit configured to store washing water to be supplied to the injection nozzles; a purification unit configured to receive and purify the waste/turbid water from the water tank and then send purified water to the water storage unit; and a blowing unit disposed on an exit side of the wheel-washing unit so as to blow air and provided with spray nozzles for selectively spraying water in a particulate form. Accordingly, environmental pollution can be significantly reduced.

The present invention provides a heavy solids separator for separating solids from fluids, comprising a swirl-generating chamber (1) and a solids accumulation chamber (2), wherein the swirl-generating chamber (1) comprises an inlet (3), a solids outlet (4) and a fluid extraction pipe (5) arranged at the centerline (C) of the chamber (1), the inlet arranged at an upper part of the swirl-generating chamber, the solids outlet is fluidly connected to the solids accumulation chamber and arranged in the bottom of the swirl-generating chamber, and the fluid extraction pipe (5) has a fluid inlet (6,19) comprising an opening (6) arranged at the centerline of the fluid extraction pipe, the opening facing the solids outlet (4), and a fluid outlet (7) for extracting fluid out of the swirl-generating chamber; and the solids accumulation chamber (2) comprises a solids inlet (8) fluidly connected to the solids outlet (4) of the swirl-generating chamber, and a solids outlet (9) arranged in a lower part of the solids accumulation chamber; and at least parts of the swirl-generating chamber and the solids accumulation chamber are arranged in a cylindrical housing (12) comprising a funnel-shaped frustoconical element (13) delimiting at least a lower section of the swirl-generating chamber and an upper section of the solids accumulation chamber, the funnel-shaped frustoconical element has an upper opening (14) and a lower opening (15), the upper opening having a larger diameter than the lower opening; wherein the solids accumulation chamber (2) comprises a fluid outlet (10) arranged above the level of the solids inlet (8) and fluidly connected downstream of the fluid outlet (7) of the fluid extraction pipe.

A multiphase pump for pumping a multiphase mixture containing hydrocarbon includes a separation system and a supply system. The separation system has a first separation stage configured to at least partly separate at least one portion of the multiphase mixture into a plurality of phase-enriched components, the first separating stage including an impeller attached to a pump shaft of the multiphase pump and being having an inlet side formed by a seal. The supply system is configured to supply a liquid-enriched liquid component as a lubricant to a pump element to be lubricated.

A hydrodynamic separator is configured to separate a liquid having dispersed particles. The separator has a substrate and a liquid channel defined by the substrate, where the liquid channel is configured to receive a liquid having a Reynolds number (Re) within the channel. The liquid channel has an inlet and an outlet and is curved to define an inner radius (R.sub.C). The liquid channel has a liquid channel length (L.sub.D) along the curve and a rectangular cross-section along the length of the curve, where the rectangular cross-section has a height, a width (w), and a hydraulic diameter (D.sub.H). The liquid channel length (L.sub.D) is greater than or equal to a linear focusing length (Lf), and (I)+6.4, where is the particle diameter. The liquid channel length (L.sub.D) is greater than or equal to a linear focusing length (Lf), and (II)+24.3. In various embodiments the liquid channel length (L.sub.D) is greater than or equal to a linear focusing length (L), and (III)+24.3.

[00001]$\begin{array}{cc}{L}_f=1598.8\frac{R_{c}a{w}^2}{{\mathrm{ReD}}_H^3}& \left(I\right)\end{array}$$\begin{array}{cc}{L}_f=156.2\frac{R_p}{Re}{\left(\frac{w}{D_H}\right)}^2& \left(\mathrm{II}\right)\end{array}$$\begin{array}{cc}{L}_f=\frac{{\mathrm{Rew}}^2}{8D_H}& \left(\mathrm{III}\right)\end{array}$

Small footprint, portable skid mounted wellhead desander systems are disclosed. In one version, two systems are mounted on the skid, one system being a single well system for testing various properties of well fluids, and the other being a combined bulk system for desanding comingled flow from a plurality of wells. In another version, the skid mounted system has three independent desanders together with all essential equipment, including e.g., plug catcher, hydrocyclone desander, solids accumulator, choke manifold, and all necessary sensors, valving and control equipment.

There is described a tray unit for a wastewater treatment device. The tray unit has a substantially frusto-conical profile defining an axis and a central aperture. The tray unit comprises a plurality of distinct tray sections arranged around the axis. Each tray section comprises a portion of the substantially frusto-conical profile of the tray unit and is connectable to one or more of the other tray sections so as to form the tray unit. There is also described a method of assembling a tray assembly for a wastewater treatment device. The method comprises the steps of: providing a plurality of tray units, the tray units each having a substantially frusto-conical profile and a central aperture and comprising a plurality of connecting lugs each defining a hole; attaching a first one of the tray units to a plurality of support members by inserting the support members through the hole of the connecting lug of the first tray unit and securing the first tray unit to the support member; and attaching a second one of the tray units to the plurality of support members by inserting the support members through the hole of the connecting lug of the second tray unit and securing the second tray unit to the support member to form an assembly of tray units.

A separator for separating solids from a fluid including a tray assembly, the tray assembly including a plurality of nested tray units which define a separator axis and are spaced apart from one another along the separator axis, wherein each tray unit includes comprising an inner surface facing the separator axis 16 extending outwards, away from an aperture in the tray unit disposed at the separator axis, wherein the inner surface comprises an inner portion and an outer portion, wherein the inner portion is disposed between the aperture and the outer portion, and wherein the gradient of the outer portion is greater than the gradient of the inner portion.

A spiral inertial filtration device is capable of high-throughput (1 mL/min), high-purity particle separation while concentrating recovered target particles by more than an order of magnitude. Large fractions of sample fluid are removed from a microchannel without disruption of concentrated particle streams by taking advantage of particle focusing in inertial spiral microfluidics, which is achieved by balancing inertial lift forces and Dean drag forces. To enable the calculation of channel geometries in the device for specific concentration factors, an equivalent circuit model was developed and experimentally validated. Large particle concentration factors were achieved by maintaining either average fluid velocity or Dean number throughout the entire length of the channel during the incremental removal of sample fluid. Also provided is the ability to simultaneously separate more than one particle from the same sample.