Typical waters and waste waters of the mining and metallurgical industry contain elements such as heavy metals(Fe, Cu, Zn,As, etc.),calcium, sulfate, nitrates, solids and acidity which require treatment before discharge or reuse in the process. Union World has efficient and sustainable wastewater treatment chemicals in its offerings to the removal and recovery of mostof the elements met in the industry's process waters, effluents and wastewaters.