Method for purifying contaminated water

摘要

A method and apparatus for purifying contaminated water includes four subsystems for removing undissolved solids, precipitation and flocculation of dissolved solids, polishing or cation removal of dissolved solids, and metallurgical furnace treatment of the separated contaminants along with gas cleaning. A unique high density inorganic adsorbent, produced during the reducing atmosphere Waelz Kiln processing of iron, zinc, lead and cadmium rich Electric Arc Furnace dust, is used to raise the pH level of the contaminated water in the precipitation procedure and again as an adsorbent filter bed in a clear well extraction vessel used in the polishing step.