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Demineralization & Deionization

Demineralization and deionization are frequently accomplished with in-plant deionizers that consume caustic and acid. The deionizers regenerate automatically at pre-established intervals and discharge highly concentrated amounts of caustic and acid into the waste stream. The deionization systems require frequent maintenance and are expensive to purchase, making this form of demineralization relatively costly.

Portable Exchange Deionization (PEDI), commonly referred to as "Service Deionization", use tanks which contain a special ion exchange resin. The tanks are plumbed into your existing system using flexible connectors. After the ion exchange resin has been exhausted, the existing tanks are exchanged for new tanks that have been regenerated off-site.

There are many advantages to demineralization through PEDI, including:

Water is a universal solvent. As precipitation passes through the earth, minerals are dissolved by the water. For this reason, groundwater almost always contains some form of dissolved minerals. When groundwater is used as source water, deionization is often required to make the water suitable for industrial uses.

Water deionization is necessary in cases where source water must be essentially free of total dissolved solids (TDS).

DI Water