Abstract: Wastewater treatment systems and methods that include a first sub-system that removes suspended solids and free/soluble oil from wastewater and a second sub-system that removes targeted ions or elements from wastewater. Wastewater treatment systems and methods that include an EDI system, including one or more ion exchange wafer configured to selectively remove a specifically targeted ion to a predetermined maximum level of concentration.

Abstract: A device for separating metal components from a colloidal suspension or solution uses a vessel for holding the colloidal suspension or solution. A membrane impermeable to the selected metal components of a colloidal suspension or solution is sealed over a support to form a leaf element. The leaf element includes an outlet for the selected components of the colloidal suspension or solution and is extended into the colloidal suspension or solution. The leaf element is controllably vibrated simultaneously with application of a negative or positive pressure which is used to motivate permeation of the membrane by the liquid of the colloidal suspension or solution to purify it. Metals removed by the method include metals with an atomic number greater than 10 including and/or silicon. The colloidal suspension or solution may optionally contain a metal precipitator such as a dithiocarbamate and/or trithiocarbamate to aid in the separation.