Corgin received an order for 4 large 30kW float-mounted surface aerators to supplement existing aerators at a WWTW in Surrey. The site was struggling to achieve adequate DO levels in the ditch with the 6 existing 30kW brush rotors, and the high efficiency Vertex Surface Aerator was selected, due to being both the lowest Capex and lowest Opex of all options.  Corgin specialise in aeration solutions that offer the lowest whole life cost or Totex.