Research advancements in the treatment of wastewater containing pollutants in printed circuit board production

Abstract

With the increasing demand for electronic equipment, the production of essential components and printed circuit boards has surged, generating a substantial volume of industrial wastewater. This wastewater contains heavy metals such as copper and nickel, as well as significant amounts of organic pollutants like black oil, dry film, and wet film. It must undergo treatment before being discharged into the environment. As a result, this paper categorizes printed circuit board wastewater into seven classifications, outlines various treatment methods, and specifically focuses on the removal of copper and its complexes through techniques such as chemical precipitation, adsorption, electrodeposition and advanced oxidation. By providing an in-depth analysis, this paper aims to offer valuable insights for the treatment of wastewater generated in the printed circuit board manufacturing process.