Waste Water Treatment Facility Removal of contaminants generated at the workplace Applied workplaces · Dyeing industry · Metal industry · Other wastewater generation industries · Food industry · Chemical industry Acid heavy metal wastewater Chemical treatment, 1,800 m³/day, 2009, Ulsan Fish processingwastewater Biological treatment, 400 m³/day, 2006, Pohang Acid wastewater Chemical treatment, 400 m³/day, 2008 Pohang Entrusted Wastewater Treatment Facility Chemical/Vacuum Evaporation Concentration/Biologic Treatment, 220 m³/day, 2012, Pohang Acid wastewater Chemical treatment, 1,800 m³/day, 2012, Vietnam