What 2 contaminants are usually found in water used to cool blast furnances?

The two contaminants commonly found in water used to cool blast furnaces are heavy metals, such as lead and Mercury, and organic compounds, including polycyclic aromatic hydrocarbons (PAHs). These contaminants can leach from materials used in the furnace and from the surrounding environment. Proper treatment and management of this water are crucial to prevent environmental pollution and protect public health.