The City of Dunedin owns and operates a Reverse Osmosis (RO) Water Treatment Plant (WTP) that produces high quality potable water for its consumers. The plant requires refurbishment and the City has decided to execute the rehabilitation via a progressive design-build paradigm. This paper will present some historical background on the plant, and dis...

This paper discusses results of an extensive pilot study conducted for City of Dunedin to evaluate pretreatment options for treating groundwater containing Fe and Mn with RO. Processes tested include several oxidants (Cl2, ClO2, O3, KMnO4 and combinations of some of them), 3 types of media (sand, greensand plus, pyrolusite), two UFs (ceramic and po...