sentences:  For the regeneration of the resin softened juice will be mixed with caustic-soda (NaOH) and will be sent to the columns to transform the resin back into Na-form.The calcium-rich juice with high pH is sent in several fractions to the beginning of the clarification process, where alkalinisation is needed and the calcium is absorbed by the solid organic matter.It is effluent free and uses the product for regeneration.