The heart of the Crystalactor treatment plant is the pellet reactor, partially filled with suitable seed material such as sand, small crushed pellets or minerals. The water is pumped in an upward direction, maintaining the pellet bed in a fluidised state. In order to crystallise the target component on the pellet bed, a driving force is created by a reagent dosage and where necessary pH-adjustment.

By selecting the appropriate process conditions, co-crystallisation of impurities is minimised and highpurity crystals are obtained. The pellets grow and move towards the reactor bottom. At regular intervals, a quantity of the largest fluidised pellets is discharged from the reactor and fresh seed material is added. After atmospheric drying, easy-to-handle and virtually water-free pellets are obtained.

Applications for drinking water, process water and wastewater include:

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