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.

In a method and apparatus 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.

An adjustable separation system for separating particles suspended in a liquid and method of using same are disclosed. Embodiments are directed to an adjustable separation system that includes an adjustable particle separation channel including: a plurality of plate electrodes; and an adjustable inclination system configured to adjust inclination of the plate electrodes through a range of angles, or an adjustable spacing system configured to adjust spacing between adjacent plate electrodes. The adjustable separation system allows the particle-laden liquid to traverse the plate electrodes within the separation channel, thereby separating the particles from the liquid while using the Boycott effect. These and other embodiments achieve separation of particles suspended in a liquid via an adjustable separation system and, optionally, without the need for manual/technician adjustments, which can result in improved efficiency, quicker separation/operating time, and reduced power consumption and cost.

Flotation separation apparatus and methods are described herein, comprising a vessel having a plurality of flow guides oriented vertically in the vessel, a liquid inlet at a lower part of the vessel, a gas inlet at the lower part of the vessel, a first liquid outlet at an upper part of the vessel, a second liquid outlet at the lower part of the vessel, and a gas outlet at the upper part of the vessel.

Flotation separation apparatus and methods are described herein, comprising a vessel having a plurality of flow guides oriented vertically in the vessel, a liquid inlet at a lower part of the vessel, a gas inlet at the lower part of the vessel, a first liquid outlet at an upper part of the vessel, a second liquid outlet at the lower part of the vessel, and a gas outlet at the upper part of the vessel.

A water treatment apparatus using a lamella structure according to an embodiment of the present invention includes a first treatment tank which includes a plurality of inclined plates and is configured to pass water subject to treatment between the inclined plates adjacent to each other and a second treatment tank which is installed at a rear end of the first treatment tank to accommodate the water subject to treatment and into which bubbles are supplied, wherein the plurality of inclined plates include positive electrode plates and negative electrode plates that are alternately arranged, and the water subject to treatment passes between the positive electrode plate and the negative electrode plate.

Provided are a liquid treatment apparatus and a liquid treatment method for reducing a waste amount of a high specific gravity liquid.

The liquid treatment apparatus includes: a liquid supply pump to supply a treatment liquid stored in a tank; a bubble tank into which the treatment liquid flows, and including a floating matter discharge port arranged near a liquid surface of the treatment liquid, and to discharge a floating matter floated on the treatment liquid; a microbubble generator arranged outside the bubble tank, and to generate microbubbles by mixing air into the treatment liquid supplied from the liquid supply pump; a separation tank connected the bubble tank at a lower portion of the bubble tank; and a circulation pipe configured to return the treatment liquid overflown from the liquid surface in the separation tank to the tank.

The present invention provides an apparatus and method for feeding a feed slurry into a device for separating low density particles from the feed slurry. The apparatus comprises a conduit having a slurry inlet, a gas feed inlet, a plurality of hollow tubes and an outlet. The hollow tubes are configured to combine the feed slurry from the slurry inlet and gas from the gas feed inlet. The hollow tubes comprise a porous section to generate bubbles of substantially uniform size into the slurry for adhering to the low density particles. Slurry flows in axially aligned hollow tubes as gas is introduced through the porous sections into the slurry. Alternatively, slurry flows around hollow tubes arranged perpendicular to the conduit longitudinal axis as gas is discharged through the porous sections into the slurry.

Flotation separation apparatus and methods are described herein, comprising a vessel having a plurality of flow guides oriented vertically in the vessel, a liquid inlet at a lower part of the vessel, a gas inlet at the lower part of the vessel, a first liquid outlet at an upper part of the vessel, a second liquid outlet at the lower part of the vessel, and a gas outlet at the upper part of the vessel.

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