Metallurgical Dust as an Adsorbent of Heavy Metal Ions from Washing Wastewater of Electroplating Industries

Abstract

The problems of wastewater treatment of electroplating industries from heavy metal ions are considered . The prospects and relevance of the sorption method of purification are shown. The results of a study on the use of dust from metallurgical industries for the extraction of hexavalent chromium, zinc, copper, nickel, and cadmium ions from the washing water of galvanic productions are presented. The possibility of intensifying the deposition of suspension particles in a settling tank, the polymer bottom of which is equipped with electromagnets, is shown. The parameters of processing the extracted sediments into anticorrosive pigments have been determined. An experimental batch of MA-25 paint was prepared on the basis of pigment from sorption purification waste. The properties of the resulting coating were investigated and it was found that it complies with all the standards imposed on this brand of paint except for color.