Weizhi - Water Treatment & Wastewater Treatment Equipment: Utilizing biological treatment technology, based on the operation experience of domestic and international domestic wastewater treatment facilities, combined with our scientific research achievements and engineering practice, it integrates the removal of BOD5, COD, and NH3-N. It boasts technical performance, excellent treatment effects, cost-effectiveness, automated operation, and convenient maintenance and operation. Electroplating Wastewater
The primary source of zinc in electroplating and metal finishing wastewater is the drag-off solution from electroplating or acid pickling. Pollutants are transferred to the rinse water during the metal rinse process. The acid pickling process involves first immersing the metal (zinc or copper) in strong acid to remove surface oxides, followed by dipping it into a brightener containing strong chromic acid for polishing.
The wastewater contains a high concentration of hydrochloric acid and heavy metal ions such as zinc and copper, as well as organic brighteners, which are highly toxic. Some also contain harmful substances, posing risks to human health. Therefore, it is imperative to carry out thorough recycling and treatment of electroplating wastewater to eliminate or minimize its environmental pollution.