A method and apparatus is disclosed for separating an amount of an amphiphilic contaminant substance such as PFAS from water. The method comprising the steps of admitting the water which contains the substance into a flotation cell chamber, and then introducing a flow of gas thereinto. The gas is introduced by several different apparatus options for efficient aeration of the chamber, depending on the water being treated. The introduced gas produces a froth layer which is formed at, and which rises above, an interface with the contents of the chamber. The froth layer includes an amount of water and also a concentrated amount of the contaminant substance when compared with its initial concentration. The process then involves collapsing and removing the froth layer, with several options for removing the PFAS from that liquid by re-flotation to reconcentrate the PFAS, or absorption onto a solid substrate material. The treated water an also pass out of the chamber through an absorptive treatment device to remove an amount of the substance not already recovered in the foamate.

The present disclosure relates to a method for cleaning contaminated soil including a process which grinds contaminated soil to separate contaminants present on the surface of the contaminated soil from the soil, and a process which injects air into a mixture of water and contaminated soil having undergone the surface grinding process to generate air bubbles and removes only the generated air bubbles to remove the contaminants included in the air bubbles.

The present disclosure relates to a method for cleaning contaminated soil including a process which grinds contaminated soil to separate contaminants present on the surface of the contaminated soil from the soil, and a process which injects air into a mixture of water and contaminated soil having undergone the surface grinding process to generate air bubbles and removes only the generated air bubbles to remove the contaminants included in the air bubbles.