Treatment of electroplating wastewaters

Abstract

In this article, the specificity of wastewaters formed at electroplating plants and problem of its treatment is considered. The purpose of this research is to suggest the technological scheme of wastewater treatment, for one of the typical electroplating plants. Standard research methods were used: gravimetrical, photometrical and fluorimetrical methods of liquid analysis to achieve this goal. This article presents the method of electroplating wastewater treatment, based on chemical precipitation, including addition of the various reagents for removing heavy metals from the effluents. Because of the laboratory research, the effects of pollutants removal are 91% (total iron) and 94.6% (suspended solids). These effects were achieved by the technological scheme that includes averaging and mixing several technological effluents, their chemical precipitation with NaOH, Ca(OH)2 and flocculant during an hour.

Removal of Contaminant in Electroplating Waste Water and Its Toxic Effect Using Biosynthesized Silver Nanoparticles

“…Electroplating is a harmful cause of ecological pollution resulting in the concentrations of heavy metals found in the largely formed wastewaters. It comprises of deposition of ornamental and shielding layers of metals and/or non-metallic surfaces which are dependent on the kind of technological processes involved (Belova, et al, 2020).…”

Removal of contaminant in electroplating wastewater and its toxic effect using biosynthesized silver nanoparticles

“…These effluents maybe consumed by unsuspecting persons leading to serious health complications and possibly loss of lives [2,3]. The deposition of contaminants into water bodies are dependent on the kind of technological processes involved [4]. The over-exposure of living system to metals and organic compounds discharged from industrial effluents have been reported to exhibit neurological, dermatitis impairment, delay in the physical, also mental development of children [5,6].…”

Electroplating and PVD Finishing Technologies in the Fashion Industry: Perspectives and Scenarios

“…Although the solution for wastewater problems related to the electroplating industry have been analyzed in the literature [4][5][6], the increasing attention to sustainability issues calls for more environmentally friendly processes. Electroplating technology has recently Sustainability 2021, 13, 4453 2 of 11 been subject to investigation due to the high environmental impacts related to water pollution: electroplating wastewater contains highly toxic cyanide, cyanide complexes, and metal ions, making postproduction treatment a complex problem to be addressed by these companies [7,8].…”