Evaluation of Nutrient Removal Performance of Oxidation Ditch Technologies
Abstract:Oxidation ditch systems are well suited to achieving biological nutrient removal with minimal chemical addition due to the high internal recirculation rates typically maintained in the systems along with long sludge ages and hydraulic retention times. Two new oxidation ditch systems in the mid-Atlantic region that were specifically designed to achieve limit-oftechnology biological nutrient removal were evaluated with respect to process performance following startup and initial operation. Both systems were of similar design capacity and were operated under similar influent flows and loads. The primary difference between the systems was reactor configuration: the first used a ‘racetrack’ flow configuration with vertical shaft surface aerators, while the second used a concentric ring configuration with horizontal shaft surface aerators. The results are presented in this paper.
Document Type: Research Article
Publication date: January 1, 2010
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