Reliability-Based Estimates of Wetland Detention Times for Wastewater Treatmentby Steven G. Buchberger, Univ of Cincinnati, Cincinnati, United States,
Abstract: Determination of the hydraulic residence or detention time is often the first step in design of wetlands constructed for wastewater treatment. Current methods for estimating wetland detention times do not consider the inherent variability of reaction rates nor influent loadings. Assuming that reaction rates are normally distributed and that influent concentrations are lognormal, two approaches for estimating required wetland detention times are presented. Results show that required detention times increase when parameter variability is included in the design process.
Subject Headings: Wetlands (fresh water) | Hydraulic design | Wastewater treatment | Residence time | Influents | Loading rates | Parameters (statistics)
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