Annually, the Water Corporation spends a large contingent of the maintenance budget replenishing resin that has failed to settle within the settlers. The problem is that by pumping the resin around the plant (whether for dosing or regeneration) using conventional closed impeller pumps, the bead is broken down into smaller less effective beads. Once these beads reach a critical size they are discharged from the process as they are unable to settle within the resin settlers (i.e. the resin remains a colloid with the raw water).

Although there is literature regarding pumps suitable for shear sensitive fluids this information is less than qualitative.

The proposal herein, using empirical and numerical means, is to assess the impact of differing pump types common to the water and food industry in an attempt to quantify the potential savings that can be made by implementing a more suitable pump.