Simulation Of Constructed Wetland Performance Using The Advection Diffusion Equation
Price
Free (open access)
Transaction
Volume
109
Pages
9
Page Range
363 - 371
Published
2008
Size
373 kb
Paper DOI
10.2495/WM080381
Copyright
WIT Press
Author(s)
V. Popov, S. Ahmed & M. Idris Qureshi
Abstract
The advection diffusion equation with variable coefficients was used to predict the performance of a subsurface constructed wetland (SSCW) treatment plant. The effect of evapo-transpiration on the velocity of flow and change of rate of biodegradation kinetics with the length of flow was considered. The differential equation was solved using the Frobenius method. The model was validated on experimental results from a pilot plant in Indian climatic conditions. The data used in this work were obtained from various hydraulic and BOD loadings. Records of biochemical oxygen demand (BOD) concentrations at inlet, outlet and intermediate levels through various stages of the treatment process over eighteen months were used for calibration of the model. The results of the model show that it is an efficient and a robust tool for prediction of the waste-water treatment performance of a constructed wetland. Keywords: mathematical modeling, constructed wetland, model studies, biochemical oxygen demand. 1 Introduction Wetlands are considered as low cost alternatives for treating municipal, industrial, and agricultural effluents. Constructed wetlands (CWs) may be
Keywords
mathematical modeling, constructed wetland, model studies, biochemical oxygen demand.