DrinTec Post Treatment Technology

Have you used DrinTech calcite contactor system for re-mineralization of seawater and do you see any advantages over the traditional calcite contactor designs? Thank you.

1 Answer

1. Hi Amir: The DrinTech calcite contactor technology is well accepted and proven and has a number of advantages comparted to conventional calcite contactors. The key advantage is that the feed of calcite cranules to the calcite contact bed is designed to occur continuously through a special set of funnels delivering the grnules gently to the bed. This allows to (1) eliminate the turbidity spikes of the product water asoicated with the intermittent reload of calcite in conventional systems; (2) avoid the need to backwash the calcite bed after a reload of media, which reduced the volume of product water wasted for operational purposes; (3) reduces the total volume (and assocated costs) of the calcite bed signficanlty because the continuous load of calcite allows to maintain the same depth of the calcite bed at all times, while the intermittent load (typically weekly) of conventional calcite contactors requires the bed (and therefore the entire calcite structure) to be oversized to provide adequate filter bed depth at the end of the filtration cycle before bed reloading. The DrinTech calcite contactors have been used at the largest SWRO plant in Europe - the 200,000 m3/day Barcelona plant and at a number of other large and medium size facilities worldwide and has well-proven track record.