A conceptual approach based on suspended solids to estimate clogging time in constructed wetlands.
A conceptual model has been developed by using the parameter of influent suspended solids (SS) concentration to estimate the clogging time in constructed wetlands (CWs). The depth of the clogging layer is estimated through the effective porosity vertically along the CWs. The basis of the model to predict the clogging time lies in the fact that, when clogging occurs, the pore spaces were reduced and thus the infiltration rate was reduced. A group of laboratory scale CWs was employed to develop the model and validate its utilization. Good agreement between the experimental data and the predicted clogging time was obtained. This indicates that the model can be used in different operation conditions for estimating clogging time in CWs.
Hua
G F
GF
National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, College of Environmental Science and Engineering, Hohai University, Nanjing, PR China. Huaguofen2005@126.com
Zhu
W
W
Zhang
Y H
YH
D004785:Environmental Pollutants / Q000032:analysis*; D005374:Filtration; D008962:Models, Theoretical; D016062:Porosity; D012037:Refuse Disposal / Q000379:methods*; D013535:Suspensions; D013997:Time Factors; D014872:Water Movements; D053833:Wetlands
D004785:Environmental Pollutants; D013535:Suspensions