A passive filter cell having a basin with a floor and two or more vertical or upright sidewalls forming chute or container having first or left sidewall, second or right sidewall, and third or back sidewall, and fourth or front downwardly curved sidewall, an inlet positioned proximate a top of the fourth or front sidewall and an outlet positioned proximate the top of the third or back sidewall, wherein the floor is configured angled from the fourth or front sidewall to the third or back sidewall, discharge pipe positioned proximate junction between the floor and the third or back sidewall, and lip configured to extend from the top of the third or back sidewall into an interior of the basin.

A system for consolidating and removing contaminate such as paint sludge or oils from a fluid mixture. A contaminate tank receives a supply of the fluid mixture containing contaminate from a source such as a manufacturing line where overspray of paints or cleaning solutions containing washed away oils are collected. A free floating weir floats on the surface of the contaminate tank and mechanically separates and removes contaminate from a surface of the contaminate tank and concentrates contaminate in a consolidation tank. The free floating weir is equipped with several features that enhance the ability of the free floating weir to remove contaminate without becoming clogged.

A passive filter cell having a basin with a floor and two or more vertical or upright sidewalls forming chute or container having first or left sidewall, second or right sidewall, and third or back sidewall, and fourth or front downwardly curved sidewall, an inlet positioned proximate a top of the fourth or front sidewall and an outlet positioned proximate the top of the third or back sidewall, wherein the floor is configured angled from the fourth or front sidewall to the third or back sidewall, discharge pipe positioned proximate junction between the floor and the third or back sidewall, and lip configured to extend from the top of the third or back sidewall into an interior of the basin.

An effluent weir system includes: one or more effluent wefts mountable within a separation tank; the effluent weir having an enclosed top portion, a bottom inlet and a discharge in fluid communication with a clear well riser; a clear well in fluid communication with the separation tank through the effluent weirs; a clear well riser with a bottom portion in fluid communication with the effluent weir discharge and a riser discharge, the riser discharge height being adjustable and including one or more sealing members. An effluent weir system may include multiple effluent weirs in fluid communication with multiple clear well risers. The effluent weir may include a peaked top portion.

A scum or floating oil concentration device comprises a scum or floating oil concentration cone (11) and a scum or floating oil conveyor (12). Said scum or floating oil conveyor (12) is arranged above said scum or floating oil concentration cone (11). Said scum or floating oil conveyor (12) comprises a conveying helix (1) rotating around a shaft, a scum or floating oil conveying pipe (2) and a skimmer (3). Said conveying helix (1) is arranged inside said scum or floating oil conveying pipe (2). An opening is arranged on said scum or floating oil conveying pipe (2). Said skimmer (3) is arranged at said opening of said scum or floating oil conveying pipe (2). An inclined separation plate (13) and a scum or floating oil collection and concentration system are further provided in the present invention.

A machine and methods using electro-chemical treatments, sedimentation processes and dissolved air flotation technologies for clarification of several kind of wastewater produced in industries, sewages, ponds, lakes, canals etc. The machine comprises of, feeding lines with multiple feeding point, a tank and further a collection tank. The wastewater is passed into the feeding line which may comprises of several feeding points for coagulants, flocculants, and other chemicals dosing into the flow of wastewater and may also comprises of a static mixer for mixing the coagulants, flocculants, and other chemicals with wastewater to agglomerate any solid particles and to accelerate separation of the solid particles in the tank. Once the solid are formed, they can go up or down, therefore to remove the suspended solids the outlet are rearranged depending on the suspended solids. Further, the machine is used for treatment of wastewater utilising multi pass concept to produce clean water.

A portable unit and associated processing are described for clarifying process water used in oil and gas operations such as fracking or drill-out operations. In the portable unit, dirty water (402) is introduced into a clarifier (400). The dirty water (402) is directed to a bottom of the clarifier (400) where dissolved air 408 from a dissolved air flotation pump (410) is injected into the water (402). The water (402) then passes across the inclined plates (412). Particles are separated from the water (402) via interaction with the plates (412) and directed to collectors (414), at the bottom of the clarifier (404), by gravitation. In addition, a floc, enhanced by the injection of the dissolved air (408), is skimmed from the water surface. The result of this process flow is clarified water (430) that can be returned to the frack and post-frack completion process.

Installation for treating water by flotation, comprising a substantially parallelepipedal assembly (1) produced by connecting modules (2, 2a), said assembly comprising a contact tank (3) which is provided with supply means for water to be treated (4) and supply means for white water (5), a flotation tank (6) which is provided with means for discharging treated water (7, 7a) and which is separated from said contact tank by a vertical wall (8), and means for discharging floated sludge, characterised in that said contact tank (3) is provided along said flotation tank (6) and delimits a single contact zone for said water to be treated with said white water, and in that said supply means for water to be treated (4) are configured to distribute the water to be treated in said contact tank according to a longitudinal water supply flow, the water distribution flow in the flotation tank being perpendicular to said water supply flow in said contact tank.

A shearing device, an arrangement and uses thereof. The shearing device is connectable to a drive assembly of the arrangement for separating solids from liquid. The shearing device includes an attachment arrangement arranged in a first end of the device for connecting the shearing device to the drive assembly. The shearing device further includes a shearing arrangement arranged to define a shearing element that is angled with the lengthwise direction of the device and intervals therebetween. The shearing device has a proximal portion closer to the first end and a distal portion closer to a second end of the device opposite to the first end. The average width of the shearing elements arranged in the distal portion is greater than average width of the shearing elements arranged in the proximal portion.

A multi-stage can washer includes a water treatment system structured to receive contaminated water from the skimming trough corresponding to a last feed tank, to clean the contaminated water, and to provide the cleaned water to a first one of the one or more feed tanks. The water treatment system includes a pressure vessel structured to mix ozone or air with the contaminated water to create gaseous water, a frothing cell structured to cause bubbles to form in the gaseous water to form a froth, to skim off and dispose of the froth, to degas the gaseous water to remove remaining gases, and to output degassed water, and a filtration system structured to receive the degassed water, to filter solid particles from the degassed water to form cleaned water, and to provide the cleaned water to the first feed tank.