ZERO VALENT IRON SYSTEMS AND METHODS FOR TREATMENT OF CONTAMINATED WASTEWATER

摘要

Hybrid zero-valent iron systems and methods for treating a fluid containing a contaminant that removes or reduces the concentration of contaminants, such as toxic metals, metalloids, oxyanions, and dissolved silica.

主权项

1. A treatment system for removing or reducing the concentration of a contaminant in a fluid, the treatment system comprising a reactive zone comprising:
(a) a reactive solid comprising zero-valent iron and one or more iron oxide minerals in contact therewith, wherein the zero-valent iron from which the reactive solid is prepared has particle size from about 5 μm to about 200 μm; (b) a secondary reagent in contact with the reactive solid, wherein the secondary reagent is ferrous iron.