Models for Design of Wetlands
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rapport Jan 2003 ; 93 pages
Ed. IETC - Osaka DANIDA - Copenhagen
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Abstract:
A mathematical model was developed to simulate the retention and removal of Total Suspended Solids (TSS) in the coupled Dynamic Roughing Filter (DRF) and Subsurface Horizontal Flow Constructed Wetland (HSSFCW) treating effluents from Waste Stabilization Ponds (WSP) system. The model was based on the deep – bed filtration models with an extension term that incorporates biological activities (biodegradation). This was necessitated by the fact that the latter models are based on suspension with a low organic solid content. This is not the case with the wastewater effluent. The filtration and sedimentation processes were simulated by simple equations of first order kinetics, while biodegradation process was simulated by Monod’s equation. The model was calibrated using the experimental data that were obtained from the experimental rigs constructed at the outlet of the facultative WSP and was validated by data obtained from the experimental rigs placed after the maturation WSP.
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IETC
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International Environmental Technology Centre - Osaka - Japon |
DANIDA
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Royal Danish Ministry of Foreign Affairs - Copenhagen - Danemark |
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