A dissolved air floatation apparatus including an ultrafine bubble-containing liquid production device and a dissolved air floatation tank. The ultrafine bubble-containing liquid production device includes a gas-liquid mixing unit and a bubble-containing liquid separation device. The bubble-containing liquid separation device swirls a liquid containing ultrafine bubbles and larger bubbles in a storage tank to concentrate the liquid that contains the ultrafine bubbles and the liquid that contains the larger bubbles to a central part of the swirling flow followed by discharge. A pressurized ultrafine bubble-containing liquid is mixed in a raw liquid containing a subject to be cleansed and is poured into the dissolved air floatation tank to cause a suspended substance and a dissolved component in the raw liquid to be adsorbed on an interface of fine bubbles and be floated in the dissolved air floatation tank to be extracted.

A froth collection launder for a collection of froth from a mineral flotation includes a first and a second sidewall which are joined to form a bottom including a tip extending along the bottom, the first sidewall including a first end and the second sidewall including a second end at their open ends, at least one of the first and the second ends includes a froth overflow lip, and when the froth collection launder is positioned at its operation position a centre line is located in the middle of the first and the second end in the cross direction (x) of the froth collection launder. The tip is located between the centre line and one of the first and the second end in the cross direction (x) of the froth collection launder and the tip forms the lowest point of the froth collection launder.

The present invention provides a method of purifying a contaminated liquid flow (A) comprising the steps of: introducing a first type of gas bubbles (8) in the contaminated liquid flow (A), the first type of gas bubbles obtained by at least partly saturating a liquid with a first gas (B), at a first pressure, followed by a lowering of the first pressure to a second pressure; introducing a second type of gas bubbles (9) to the contaminated liquid flow (A) downstream of the introduction of the first type of gas bubbles, the second type of gas bubbles formed by sparging, entrainment or attrition of a second gas (B); extracting a reject stream (C) comprising aggregates formed by the interaction of contaminants from the contaminated liquid flow (A) with both the first and the second type of gas bubbles; and obtaining a purified liquid flow (D) downstream of the introduction of the second type of gas bubbles; as well as a system and a vessel for use in such a method.

A froth collection launder for a collection of froth from a mineral flotation includes a first and a second sidewall which are joined to form a bottom including a tip extending along the bottom, the first sidewall including a first end and the second sidewall including a second end at their open ends, at least one of the first and the second ends includes a froth overflow lip, and when the froth collection launder is positioned at its operation position a centre line is located in the middle of the first and the second end in the cross direction (x) of the froth collection launder. The tip is located between the centre line and one of the first and the second end in the cross direction (x) of the froth collection launder and the tip forms the lowest point of the froth collection launder.

The invention relates to a magneto-centrifugal flotation cell for ore concentration which reduces water consumption. A disadvantage of conventional flotation cells is the use of a large amount of water, some flotation cells requiring at least 60% water. The present invention uses ore pulp with increased density and viscosity, owing to the application of an axial magnetic field, wherein the Lorentz force, which is the force exerted by an electromagnetic field that receives a charged particle or an electrical current, can be used. The solution is a cell which, in addition to the forces that usually act on conventional flotation cells, uses external forces which, in principle, produce synergy in the separation of ore particles that have different gravitational and magnetic properties.

Disclosed herein are methods for isolating target cells from blood, involving mixing in an open container an undiluted blood sample having a volume of 10 ml or less, and binding agents, wherein each binding agent comprises (A) a primary binding agent comprising an agent capable of binding to at least one cellular epitope on target cells in the undiluted blood sample, (B) a first linker bound to the primary binding agent, to generate binding agent-attached target cells in the undiluted blood sample; contacting the binding agent-attached target cells in the undiluted blood sample with a plurality of buoyant reagents that include a second linker capable of binding to the first linker to generate an undiluted buoyant reagent-attached target cell mixture; diluting the undiluted buoyant reagent-attached target cell mixture by at least 20% to produce a diluted buoyant reagent-attached target cell mixture; applying a vectorial force, such as centrifugal force, to the diluted buoyant reagent-attached target cell mixture to generate a stratified diluted buoyant reagent-attached target cell mixture; removing the buoyant reagent-attached target cells from the stratified diluted buoyant reagent-attached target cell mixture; and isolating the target cells from the buoyant reagent-attached target cells.

Some implementations can include method and system to collect and remove micro plastics from a water environment or ecosystem.

Adaptive Control Systems and methods are provided for an electronic visual aid, which may be wearable, hand held or fixed mount, including autonomous hands free control integrated with artificial intelligence tunable to user preferences and environmental conditions.

Disclosed is a dissolved air floatation device which includes a cyclonic flotation separation tank, arranges a return pipe for treated water and a return pipe for floating scum concentrically with respect to the center pipe of a swirling flow within the floatation separation tank, forms a descending water flow along with an ascending water flow within the flotation separation tank, thereby being capable of simultaneously separating settled suspended material and floating suspended material in raw water at an improved efficiency.

In a method for separating low density particles from feed slurries, a bubbly mixture is formed in a downcomer and issues into a mid region in a chamber. An inverted reflux classifier is formed by parallel inclined plates below the mid region allowing for efficient separation of low density particles which rise up to form a densely packed foam in the top of the chamber, and denser particles which fall downwardly to an outlet.