Evaluation of Correlations for Zone Settling Velocity Parameters Based on Sludge Volume Index-Type Measures and Consequences in Settling Tank Design
Abstract:Determining zone settling velocity (ZSV) parameters for use in flux-theory analysis (design or operating charts) is time consuming. Correlations have been proposed for these parameters based on more readily obtained sludge volume index- (SVI-) type measures. A number of these correlations are reviewed, and their ability to predict ZSV parameters is evaluated. This assessment uses a model to generate SVI values from specified ZSV parameters. The SVI values are applied in correlations to generate predicted ZSV parameters that are compared to the specified ZSV parameters. Specified and correlation-generated ZSV parameters are used in the flux-theory design procedure to assess the difference in maximum allowable overflow rate.
Document Type: Research Article
Publication date: November 1, 1999
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