A Removal Method of Cadminum in the Cd Containing Waste Water By Using Slag Solution

摘要

PURPOSE: An economical method for removing cadmium from cadmium wastewater using sulfur ion leachate from slag is provided. CONSTITUTION: The method comprise steps of mixing of sulfur ion leachate of blast furnace slag and cadmium wastewater to form insoluble sodium sulfate and cadmium sulfate, wherein the pH of the sulfur ion leachate is higher than 12; separating sodium sulfate and cadmium sulfate to remove cadmium from the cadmium wastewater.