AWWA ACE70749

This powerpoint presentation presents a project by the City of Plantation, Florida, to identify an alternative water source. Indirect Potable Reuse - Aquifer Recharge was chosen. Issues for consideration in the selection of groundwater recharge through surface water discharge with the Plantation pilot included: nutrient control; MBR scheme data; conventional treatment scheme data; microconstituents; and, aquatic organism impact toxicity. Presentation summary indicates: the pilot demonstrated to meet stringent nutrient limits at different test conditions; RO membranes are necessary for surface water discharge due to stringent TP limits; almost all microconstituents were removed by RO system; RO permeate could be toxic re-stabilization/remineralization is necessary; and, the observed toxicity to aquatic organisms was likely caused by chloramines. Other forms of RO pretreatment should be evaluated. Includes figures.