Nutrient Removal Alternatives for Water Reuse Projects – What to do when RO is not Enough. The Miami-Dade Experience for a Sustainable Solution
Abstract:A comprehensive nutrient removal evaluation to meet extremely low nutrient limits was performed for the South District Water Reclamation Plant (SDWRP) in Miami, Florida. Several alternatives were originally identified by the project team as possible candidates to complement SDWRP's proposed membrane filtration / reverse osmosis (RO) / ultraviolet disinfection and advanced oxidation processes to meet the required limits. A preliminary screening of these alternatives resulted in the selection of chemical phosphorus removal coupled with biologically active filters, movable bed biofilm reactors, second pass RO, ion exchange (IX), and breakpoint chlorination as the most viable nutrient removal processes for complementing SDWRP's originally anticipated three-stage RO system to meet the low nutrient limits required for the project. A comprehensive evaluation of the final alternatives resulted in the selection of chemical phosphorus removal and IX as the best processes for SDWRP. Decision factors included significant sustainable advantages compared to the other alternatives.
Document Type: Research Article
Publication date: January 1, 2010
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