Water is a basic need for life. It can be in solid, gaseous, and liquid forms. Earth is 70% covered with it. The human body is 70% of water. Water has many properties such as polarity and the ability to act as a universal solvent, which is important for many industrial purposes. Not all water uses in the industry should be of the same quality, but some processes require pure water and others do not. Many industrial plants such as pharmaceuticals require clean water. In water purification, ions are exchanged for hydrogen and hydroxyl ions. Industrial water treatment, traditionally not associated with electrical driven media, relies on ion exchange units that use synthetic ion exchange resins. Resins must be regenerated using sulphuric or hydrochloric acid and caustic soda. Electro deionization on the other is an advanced water purification technology that combines both pre-treatment reverse osmosis and continuous electro deionization.
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