What is a deionization tank primarily used for?

A deionization tank is primarily used to remove ions from water, which is accomplished by using resin beads. These beads are specifically designed to attract and hold onto positively charged ions (cations) and negatively charged ions (anions). When water flows through the tank, the resin exchanges ions with the water, effectively deionizing it.

This process is essential for applications requiring high-purity water, such as in laboratories, pharmaceuticals, and certain industrial processes. The removal of ions helps prevent scaling, corrosion, and other issues that can arise from the presence of minerals or salts in water. The effectiveness of the deionization tank in achieving these results is why it is considered a crucial component in water treatment systems.

In contrast, the functions of the other options do not align with the primary purpose of a deionization tank. For example, storing brine is associated with salt systems, while reverse osmosis (RO) treatment serves a different primary function in water purification. Regulating water temperature is unrelated to the ion removal process that a deionization tank is designed for.